WDR5-0103_LCMS_18742_MedChemExpress
HSF1A_DataSheet_MedChemExpress
Inhibitors, Agonists, Screening Libraries Data SheetBIOLOGICAL ACTIVITY:HSF1A is a cell–permeable activator of heat shock transcription factor 1 (HSF1).IC50 & Target: HSF1[1]In Vitro: HSF1A protects cells from stress–induced apoptosis, binds TRiC subunits and inhibits TRiC activity without perturbation of ATP hydrolysis. Genetic inactivation or depletion of the TRiC complex results in human HSF1 activation and HSF1A inhibits the direct interaction between purified TRiC and HSF1 in vitro. Moreover, fluorescence anisotropy experiments using FITC coupled to HSF1A demonstrates that HSF1A–FITC binds to a purified Tcp1 subunit of TRiC with an affinity of approximately 600 nM. This is validated qualitatively via titration of purified Tcp1 into binding reactions containing 500 nM Biotin or HSF1A–Biotin [1]. Quantification bycounting the number of cell containing aggregates as a function of the total number of cells reveals that at HSF1A concentrations as low as 2 μM, a reduced number of aggregate–containing cells are observed. The fraction of cells containing aggregates continued to decrease in a dose–dependent manner such that pretreatment with 12 μM HSF1A resulta in ~20% of the cells exhibiting aggregates visible by fluorescence microscopy [2].In Vivo: HSF1A enhances HSF1 activity, stabilizes HSF1 expression and minimizes Doxorubicin (DOX)–induced cardiac damage. WKY rats are challenged with DOX (accumulated dose: 30 mg/kgw), and DOX combined with HSF1A (100 mg/kgw/day). Supplementation with HSF1A significantly elevates cardiac functions back to the levels of the control group. HSF1A has been shown to stimulate human HSF1 nuclear translocation, elevate protein chaperone expression and ameliorate protein misfolding and cell death in aneurodegenerative disease model. The echocardiographic results show that HSF1A also alleviates DOX–induced failures in cardiac function [3].PROTOCOL (Extracted from published papers and Only for reference)Kinase Assay:[1]Protein extracts are generated from mammalian, yeast and E. coli cultures using biotin–binding buffer (20 mM HEPES,5 mM MgCl 2, 1 mM EDTA, 100 mM KCl, 0.03% NP–40) supplemented with 1% Trition–X100 and protease inhibitors. Approximately 0.5mg of protein extract is incubated with 100 μM HSF1A–Biotin for 4 h at 4°C and HSF1A–Biotin associated proteins captured by with NeutrAvidin Agarose Resin. After washing in biotin binding buffer proteins are eluted using 50 μL biotin elution buffer (100 mM Tris,150 mM NaCl, 0.1 mM EDTA, 2 mM D–biotin), resolved on a 4–20% SDS–PAGE, and immunoblotted. For purified TRiC and Hsp70analyses, 5 nM protein is incubated in biotin–binding buffer+0.5% Triton X–100 with 100 μM biotin or 100 μM HSF1A–Biotin for 4 h at 4°C and captured with NeutrAvidin Resin. For NiNTA purified yeast Tcp1, different concentrations of Tcp1 0.5 μM, 1 mM, 2 mM, 3 mM and 4 mM in 25 mM Hepes pH 7.5, 150 mM NaCl are incubated with 0.5 μM Biotin or HSF1A–Biotin for 4 h at 4°C and captured with NeutrAvidin Resin [1].Cell Assay:[2]PC12 cells seeded into a 96–well plate (5×104 cells/well) are treated with increasing concentrations of HSF1A (2, 4, 8 andProduct Name:HSF1A Cat. No.:HY-103000CAS No.:1196723-93-9Molecular Formula:C21H19N3O2S2Molecular Weight:409.52Target:HSP Pathway:Cell Cycle/DNA Damage; Metabolic Enzyme/Protease Solubility:DMSO: ≥ 150 mg/mL12 μM) for 15 h, at which time httQ74–GFP expression is stimulated by incubation in the presence of 1 μg/mL Doxycycline for 5 d. Cell viability is assessed via the XTT viability assay[2].Animal Administration:[3]Rat[3]Ten–week–old Wistar Kyoto rats (WKY) are used. The rats are housed at a constant temperature (22°C) on a 12–h light/dark cycle with food and tap water. The animals are arranged into three groups: WKY rats (the control group), DOX rats and DOX rats treated with HSF1A. Each group contain five animals. The DOX group is injected with DOX (5 mg/kg) for 6 consecutive weeks intraperitoneal injection to achieve a cumulative dose of 30 mg/kg, which has been well documented to achieve cardiotoxicity. The small molecular HSF1 activator HSF1A (100 mg/kg/day) is injected intraperitoneally.References:[1]. Neef DW, et al. A direct regulatory interaction between chaperonin TRiC and stress–responsive transcription factor HSF1. Cell Rep. 2014 Nov 6;9(3):955–66.[2]. Neef DW, et al. Modulation of heat shock transcription factor 1 as a therapeutic target for small molecule intervention in neurodegenerative disease. PLoS Biol. 2010 Jan 19;8(1):e1000291.[3]. Huang CY, et al. Doxorubicin attenuates CHIP–guarded HSF1 nuclear translocation and protein stability to trigger IGF–IIR–dependent cardiomyocyte death. Cell Death Dis. 2016 Nov 3;7(11):e2455.Caution: Product has not been fully validated for medical applications. For research use only.Tel: 609-228-6898 Fax: 609-228-5909 E-mail: tech@Address: 1 Deer Park Dr, Suite Q, Monmouth Junction, NJ 08852, USA。
通过LC-MS快速筛选灯笼草中的Micheal反应受体起到抗胰腺癌的作用的有效部位
通过LC-MS快速筛选灯笼草中的Micheal反应受体起到抗胰腺癌的作用的有效部位一、项目可行性报告(一)立项的背景和意义。
胰腺癌是恶化性程度较高的消化系统肿瘤之一,近年来已成为我国致癌症病人死亡的第五大恶性肿瘤,然而目前常规的治疗手段疗效十分有限[1]。
将传统中药材用于预防和治疗胰腺癌由于具有一定的临床疗效且副作用较小而备受关注。
因此从中药材中分离得到抗胰腺癌的有效部位对新药的研发具有重要意义。
中药灯笼草为茄科植物Physalis angulata L.的全草,在我省大部分地区均有分布。
《本草纲目拾遗》中记载本品性味苦、酸,性寒;具有清热解毒、利咽、化痰、利尿等作用。
本品在我省民间广泛用于肺热咳嗽、咽喉肿痛、湿热黄疸以及多种肿瘤等的治疗。
体内和体外抗肿瘤研究发现,灯笼草提取物对于乳腺癌、前列腺癌和肝癌等恶性肿瘤的生长具有较好的制作用[2-3];进一步的机理研究显示灯笼草的抗肿瘤效应可能与其阻滞细胞周期进而诱导细胞凋亡有关[4],但灯笼草抗肿瘤的有效部位仍有待进一步阐明。
特异性地拮抗Hsp90 功能可以同时抑制肿瘤细胞内多条关键信号通路的活性,有望通过对肿瘤细胞特异性地“多靶点打击”诱导肿瘤细胞凋亡,因此抑制Hsp90 活性成为目前抗肿瘤药物研究新热点[5]。
随着雷公藤红素(celastrol)、表没食子儿茶素没食子酸酯(EGCG)等中药有效成分拮抗Hsp90 介导肿瘤杀伤的作用机理得到详细阐明[6],提示可以从传统中药中寻找更为安全有效的Hsp90 抑制剂用于肿瘤的治疗。
植物化学研究表明灯笼草的活性部位主要为甾体內酯类、生物碱类和黄酮类,其中甾体內酯类化合物表现出较强的抗肿瘤活性。
此类化合物在其A/B 环上中往往含有α、β-不饱和羰基以及环氧基团,而该类药效基团较易与蛋白质分子中的活性半胱氨酸基团发生氧化反应产生加成产物[7]。
另一方面,研究显示HSP90 及其分子伴侣在蛋白分子结构中含有大量活性半胱氨酸基团,这些半胱氨酸基团容易被氧化形成分子内双键,进而促使HSP90及其辅助分子伴侣失去活性[8]。
SDF-1/_CXCR4_信号轴在MSCs_修复损伤组织中作用的研究进展
第43卷㊀第2期2024年㊀4月北京生物医学工程BeijingBiomedicalEngineeringVol 43㊀No 2April㊀2024㊃综㊀述㊃基金项目:重庆市自然科学基金(2009bb5040)资助作者单位:1㊀重庆市第六人民医院(重庆㊀400060)2㊀重庆市红十字会医院(江北区人民医院)(重庆㊀400020)通信作者:宋关君,副主任医师㊂E⁃mail:song9973@126 comSDF⁃1/CXCR4信号轴在MSCs修复损伤组织中作用的研究进展杨凌霄1㊀宋关君2摘㊀要㊀骨髓间充质干细胞(mesenchymalstemcells,MSCs)具有自我更新和多向分化潜能,在损伤组织修复中起着重要作用㊂基质细胞衍生因子-1(stromalcell⁃derivedfactor⁃1,SDF⁃1)/CXC趋化因子受体4(CXCchemokinereceptor4,CXCR4)信号轴是由SDF⁃1与其受体CXCR4相互作用构成的耦联分子对,能够进行细胞间信号转导㊁诱导细胞的定向迁移,参与细胞的多种生物学过程㊂研究证实,SDF⁃1/CXCR4信号轴在MSCs参与心肌缺血㊁肾脏病变㊁骨组织损伤等损伤组织修复过程中有重要的促趋化和增殖的作用㊂本文简要介绍了SDF⁃1和CXCR4的分子结构,重点阐述了SDF⁃1/CXCR4信号轴在MSCs参与相关损伤组织修复中的作用,归纳总结了该领域的研究进展,并展望了该领域未来的发展方向,为深入理解SDF⁃1/CXCR4信号轴及其在MSCs参与组织损伤修复过程中的作用提供理论基础,也为临床上更好地将MSCs应用于损伤组织修复提供参考㊂关键词㊀基质细胞衍生因子-1;CXC趋化因子受体4;间充质干细胞;组织损伤;组织修复DOI:10 3969/j.issn.1002-3208 2024 02 014.中图分类号㊀R318㊀㊀文献标志码㊀A㊀㊀文章编号㊀1002-3208(2024)02-0205-06本文著录格式㊀杨凌霄,宋关君.SDF⁃1/CXCR4信号轴在MSCs修复损伤组织中作用的研究进展[J].北京生物医学工程,2024,43(2):205-210.YANGLingxiao,SONGGuanjun.ResearchprogressontheroleofSDF⁃1/CXCR4signalaxisinMSCsrepairinginjuredtissues[J].BeijingBiomedicalEngineering,2024,43(2):205-210.ResearchprogressontheroleofSDF⁃1/CXCR4signalaxisinMSCsrepairinginjuredtissuesYANGLingxiao1,SONGGuanjun21㊀TheSixthPeople sHospitalofChongqing,Chongqing㊀400060;2㊀TheRedCrossHospitalofChongqing(JiangbeiDistrictPeople sHospitalofChongqing),Chongqing㊀400020Correspondingauthor:SONGGuanjun(E⁃mail:song9973@126 com)ʌAbstractɔ㊀Bonemarrow⁃derivedmesenchymalstemcells(MSCs)haveaself⁃renewalcapacityandmultilineagedifferentiationpotential,andplayanimportantroleintherepairofinjuredtissue.Stromalcell⁃derivedfactor⁃1(SDF⁃1)/CXCchemokinereceptor4(CXCR4)signalaxisisacoupledmolecularpairformedbytheinteractionbetweenSDF⁃1andCXCR4,whichcancarryoutsignaltransduction,inducecellmigration,andparticipateinavarietyofbiologicalprocessesofcells.StudieshaveconfirmedthatSDF⁃1/CXCR4signalaxisplaysapivotalroleinpromotingchemotaxisandproliferationinMSCs⁃mediatedtissuerepairofmyocardialischemia,kidneydisease,andbonetissueinjuryandsoon.ThisreviewpaperbrieflyintroducesthemolecularstructureofSDF⁃1andCXCR4,thendiscussestheroleofSDF⁃1/CXCR4signalaxisinMSCs⁃mediatedrepairofrelatedinjuredtissue.Finally,wesummarizetheresearchprogressandprospectthefuturedevelopmentdirectionsinthisfield.ThisreviewprovidesatheoreticalbasisforbetterunderstandingofSDF⁃1/CXCR4axisanditsroleinMSCs⁃mediatedtissuerepair,andbringsareferenceforbetterapplicationofMSCsintissuerepairinclinic.ʌKeywordsɔ㊀stromalcell⁃derivedfactor⁃1;CXCchemokinereceptor4;mesenchymalstemcell;tissueinjury;tissuerepair0㊀引言骨髓间充质干细胞(mesenchymalstemcells,MSCs)是一类多能成体干细胞,在特定环境条件下可分化为成骨细胞㊁软骨细胞㊁脂肪细胞等多种细胞㊂除具有易于分离获取㊁体外增殖能力强㊁不涉及伦理㊁低免疫原性等特点外,MSCs还具有趋化㊁迁移特性,在损伤组织的修复中起着重要作用[1]㊂基质细胞衍生因子-1(stromalcell⁃derivedfactor⁃1,SDF⁃1)主要由骨髓基质细胞和不成熟的成骨细胞分泌,是一种对免疫细胞有趋化作用且相对分子量较小的趋化因子蛋白㊂SDF⁃1又叫前B细胞生长刺激因子(pre⁃B⁃cellgrowthstimulatingfactor,PBSF),在分类上归为趋化因子CXC亚组,系统命名为CXCL12(CXCchemokineligand12),有SDF⁃1α和SDF⁃1β两个异构体,其N-末端是绑定和激活趋化受体的主要功能区,具有7个耦合到G蛋白上的跨膜结构域[2]㊂CXC趋化因子受体4(CXCchemokinereceptor4,CXCR4)属于一种G蛋白耦联受体,是目前人们了解最清楚的SDF⁃1主要受体,包括7个跨膜螺旋,由352个氨基酸组成㊂激活后的SDF⁃1/CXCR4信号能够诱导细胞的定向迁移或参与细胞的多种生物学过程,如血管生成㊁造血作用㊁免疫应答㊁炎症响应㊁癌症转移等[3]㊂越来越多的研究发现,SDF⁃1/CXCR4轴在组织损伤及修复中起着重要的作用㊂本文主要介绍SDF⁃1/CXCR4轴在MSCs参与损伤组织修复中作用的相关研究进展㊂1㊀在MSCs参与心肌梗死修复中的作用心肌梗死(myocardialinfarction,MI)导致的心脏功能失调是当今人类面临的重大健康问题之一,主要表现为长期的肌肉损伤㊁瘢痕形成㊁心脏功能衰退和冠状动脉瞬时堵塞㊂由SDF⁃1参与的基于MSCs的细胞疗法是治疗MI的潜在手段之一[4]㊂在对MI模型的研究中,Tang等[5]发现SDF⁃1α修饰后的MSCs能够提高成活率并且促进MSCs表达SDF⁃1㊁血管内皮生长因子(vascularendothelialgrowthfactor,VEGF),进而激活抗凋亡激酶ERK和AKT信号通路㊂SDF⁃1α修饰后的MSCs移植后具有心肌细胞的表型特征(如表达肌钙蛋白T)和内皮细胞的表型特征(如表达CD31)[6]㊂Zhang等[7]发现MSCs分泌的SDF⁃1能够有效地阻止由于组织部位的缺血导致的心肌细胞死亡,并能够使受损心肌处的胶原I(collagenI,ColI)㊁胶原III(collagenIII,ColIII)和基质金属蛋白酶2(metalloprotease2,MMP2)㊁基质金属蛋白酶9(metalloprotease9,MMP9)㊁转化生长因子β(transforminggrowthfactor⁃β,TGF⁃β)表达降低㊂Zhuang等[8]将SDF⁃1注入兔MI模型中,发现不但MSCs向受伤心肌处的迁移增加,而且受损处的新血管形成能力明显提高㊂采用SDF⁃1处理MSCs后再移植,都呈现不同程度的左心室壁厚度增加㊁梗死面积减少㊁毛细血管和小动脉数量增加㊁心室扩张减小等心脏功能改善的现象㊂有研究发现心肌中SDF⁃1的表达只在MI的早期阶段出现㊂将MSCs注射到缺血心肌处后的4d内能够起到改善心肌的效果,而在注射后的8d和16d观察这种积极的作用消失,与此同时心肌中SDF⁃1的表达也很低㊂最近的研究也证实,SDF⁃1/CXCR4介导的干细胞动员参与了电针对心肌梗死小鼠的心脏保护作用[9]㊂这些结果提示,SDF⁃1是募集MSCs的关键作用因子㊂同时,SDF⁃1在MI的早期阶段表达也提示,在应用MSCs进行MI治疗中,对患者进行MSCs治疗的最佳时间也是一个不容忽视的问题㊂总的来看,SDF⁃1/CXCR4信号轴能促进MSCs向MI部位定向迁移,迁移到损伤部位的MSCs能阻止心肌细胞凋亡,促进血管生成,对MI㊃602㊃北京生物医学工程㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀第43卷导致的心脏损伤组织表现出良好的修复作用,但由于SDF⁃1在MI中的表达呈现出时效性,因此,在临床上应用MSCs进行MI患者治疗中如何确定MSCs治疗的最佳时间以取得更好的疗效还需进一步探究㊂2㊀在MSCs参与肾脏疾病修复中的作用新近的研究发现,MSCs可能通过其旁分泌和自分泌的机制实现对肾脏疾病的修复,包括促有丝分裂㊁抗凋亡㊁抗炎㊁抗纤维化和促血管生成等作用实现,而在此过程中MSCs的分化效果却并不十分明显[10]㊂SDF⁃1能够增强低氧预处理(hypoxicpreconditioning,HP)后的MSCs对肾脏疾病的治疗作用,包括促进MSCs分泌SDF⁃1和其受体CXCR4㊁CXCR7[11]㊂其中,SDF⁃1/CXCR4提高MSCs的趋化性,而SDF⁃1/CXCR7增加迁移后MSCs的成活数量㊂通过建立肾脏疾病模型,Tögel等[12]发现SDF⁃1对高表达CXCR4受体的细胞起到重要的募集和归巢作用㊂SDF⁃1对肾脏缺血的这种响应是受低氧条件中调节细胞反应的主要转录因子HIF⁃1(hypoxia⁃induciblefactor⁃1)所调节㊂SDF⁃1还能够显著提高MSCs对其他细胞因子的旁分泌作用,比如:诱导血管内皮生长因子(vascularendothelialgrowthfactor,VEGF)㊁碱性成纤维细胞生长因子(basic⁃fibroblastgrowthfactor,b⁃FGF)㊁胰岛素样生长因子1(insulin⁃likegrowthfactor,IGF⁃1)㊁肝细胞生长因子(hepatocytegrowthfactor,HGF)等的分泌㊂另外,SDF⁃1也能诱导T细胞的排斥反应,从而呈现出在受损组织处的抗炎症反应㊂也有研究发现缺血肾脏处自身表达SDF⁃1也在一定程度上增加了MSCs向其部位的迁移㊁粘附功能,促进了MSCs对肾脏损伤的修复作用[13]㊂MSCs定向迁移到损伤部位后,主要以旁分泌和定向分化两种机制实现对损伤组织的修复作用[1]㊂在MSCs参与肾脏损伤组织修复研究中,发现SDF⁃1/CXCR4能提高MSCs的趋化性,促进其旁分泌作用,进而展现出促肾脏细胞增殖㊁促血管生成㊁抗凋亡㊁抗炎㊁抗纤维化等系列修复作用,但在该修复过程中MSCs的定向分化作用并不明显[10],其原因值得深入探讨㊂在该过程中若能同时发挥MSCs的旁分泌功能和定向分化两种作用,应该会收到更好的修复效果㊂3㊀在MSCs参与骨组织损伤修复中的作用在骨组织工程和骨组织损伤修复领域,提高MSCs向受损组织处的定向募集和归巢能力是一种有效的方法[14]㊂SDF⁃1能够刺激MSCs向异位植入位点的迁移㊂对骨形成蛋白2(bonemorphogeneticprotein2,BMP2)诱导的MSCs向成骨细胞分化的调节作用也是学者关注的关键问题之一[15]㊂Kitaori等[16]的研究发现,在骨修复的初期,骨移植处的SDF⁃1表达水平增高,进而SDF⁃1通过与其受体CXCR4之间的相互作用招募MSCs到达受伤位点,从而加速新骨形成㊂而在SDF⁃1诱导MSCs向骨细胞分化方面,有实验研究显示,阻断SDF⁃1/CXCR4信号显著降低BMP2诱导的MSCs成骨分化中前成骨细胞标志物碱性磷酸酶(alkalinephosphatase,ALP)的活性和成熟成骨细胞标志物骨钙蛋白(osteocalcin,OCN)的合成[17]㊂其次,在MSCs成骨分化过程中,破坏SDF⁃1信号会损害受伤位点处的骨结节矿化㊂阻断SDF⁃1信号也抑制BMP2诱导的MSCs成骨分化的两个关键因子Runx2(runt⁃relatedtranscriptionfactor⁃2)和Osterix(Osx)的早期表达[18]㊂进一步的研究发现,这种影响主要是通过SDF⁃1/CXCR4轴对细胞内的Smad和ERK的活性调节来实现的[19]㊂此外也有研究发现,在含BMP2的植入物中添加SDF⁃1,可以提高从骨髓中募集骨祖细胞的效率,增加BMP2诱导的异位骨的形成[20]㊂4㊀在MSCs参与脑损伤修复中的作用将MSCs移植到中枢神经系统紊乱的动物模型(如脑卒中)中,MSCs可以向中枢神经受损处募集㊁迁移,并且能够提高神经细胞特异性蛋白的表达,进而提高局部神经系统的功能[21]㊂Kortesidis等[22]深入探究了其分子机制,发现移植后的MSCs通过自分泌和旁分泌的方式上调SDF⁃1及其受体CXCR4的表达,促进自身的增殖和存活㊂Shichinohe等[23]首次直接通过体内CXCR4敲除的小鼠动物模型实验,发现脑卒中区域能够激活星形胶质细胞分泌SDF⁃1,SDF⁃1与MSCs上表达的CXCR4作用,诱导MSCs向卒中处的迁移㊂迁移后的MSCs又通过自身表达的SDF⁃1促进其本身在宿㊃702㊃第2期㊀㊀㊀㊀㊀㊀杨凌霄,等:SDF⁃1/CXCR4信号轴在MSCs修复损伤组织中作用的研究进展主大脑处的增殖和成活,通过调动体内的相关修复机制,最终参与神经系统功能的恢复㊂该研究结果揭示了SDF⁃1/CXCR4对移植后MSCs存活和增殖的作用机制㊂Wang等[24]的研究也发现,SDF⁃1α和其受体CXCR4在诱导干细胞向受伤组织处的迁移中发挥的积极作用,并且通过绿色荧光蛋白(greenfluorescenceprotein,GFP)标记的MSCs发现,在脑卒中损伤中,MSCs的迁移是沿着嗅神经-丘脑和海马-皮质路线这一轨迹进行的㊂在受伤脑组织中,SDF⁃1/CXCR4能够诱导MSCs的募集和迁移㊁粘附以及调节造血作用等[25]㊂同时,由于很多白细胞能够表达CXCR4受体,所以SDF⁃1也表现出了抗炎的潜在作用,即SDF⁃1能够调动脑卒中处的固有免疫反应[26]㊂Bakondi等[27]还发现大脑初级神经元中存在以SDF⁃1为基础的生存信号,以保护神经前体细胞免受缺氧造成脑部损伤引起的细胞凋亡,证明SDF⁃1具有抗凋亡的作用㊂近年来发现,SDF⁃1的另一受体CXCR7在这一过程中也发挥重要的作用[28],但对其分子机制尚缺乏深入认识㊂因此,CXCR4和CXCR7两种受体在该过程中的作用方式(独立或协同)以及贡献大小等问题都需要进一步明确㊂5㊀在MSCs参与肿瘤微环境重塑中的作用正常组织发生恶变可被视为一种特殊的组织损伤,炎性微环境是肿瘤组织的重要特征之一㊂肿瘤组织能募集MSCs参与肿瘤微环境的重塑,并对肿瘤细胞的生物学行为产生重要影响㊂肿瘤细胞与MSCs之间的交互对话及相互影响成为近年来肿瘤领域的研究热点,但是,目前人们对于MSCs如何参与肿瘤微环境的重塑以及MSCs如何影响肿瘤细胞的生物学行为还缺乏系统认识㊂有研究发现,迁移到肿瘤组织的MSCs对肿瘤细胞的增殖起抑制作用㊂Lu等[29]将小鼠骨髓来源MSCs与小鼠肝癌细胞系㊁淋巴瘤及大鼠胰岛瘤细胞系共培养,发现MSCs对鼠瘤的生长起抑制作用,并且抑制效果与MSCs的量成正比㊂Khakoo等[30]也发现MSCs对卡波西肉瘤的抑制是剂量相关的,提示MSCs对肿瘤细胞的抑制行为可能呈现出剂量依赖关系㊂皮下注射MSCs到黑色素瘤鼠体内发现肿瘤细胞凋亡明显增加,其生长也受到明显抑制[31]㊂多种细胞因子或趋化因子能促进MSCs向肿瘤组织迁移㊂研究发现,MSCs与肿瘤细胞(或其条件培养基)共培养时,MSCs能高表达SDF⁃1,诱导MSCs向肿瘤细胞迁移[32]㊂相关研究进一步探讨了后续信号的传递,发现SDF⁃1激活了信号通路JAK2/STAT3和MAPK,进而活化下游信号PAX(paxillin)和NF⁃kB,导致细胞骨架的重排和细胞迁移行为的变化[33]㊂SDF⁃1/CXCR4在诱导MSCs对急性髓性白血病(acutemyeloidlekemia,AML)的修复中也具有重要作用[34]㊂研究发现,AML患者的外周血中SDF⁃1的分泌量有所下降,对MSCs的迁移效率带来不利影响,但SDF⁃1的这种不足可以在外源加入MSCs之后得到明显改善[35]㊂在MSCs参与肿瘤微环境的重塑中,也有研究发现MSCs促进了多种类型肿瘤细胞的增殖㊁侵袭和转移[36-37],或者促进肿瘤血管形成[38],提示MSCs对肿瘤细胞的生物学行为呈现双向影响㊂SDF⁃1/CXCR4轴在肿瘤的侵袭转移中发挥了重要作用,对其有效干预可能成为肿瘤治疗的新靶点㊂但是,由于MSCs对肿瘤细胞的生物学行为呈现出双向影响效应,因此如果要应用MSCs进行肿瘤患者损伤组织的修复,应该特别警惕MSCs在肿瘤微环境重塑中的负面作用㊂将来的研究工作需进一步深入探究MSCs对肿瘤组织的作用并揭示其分子机制,这样不仅能更好地认识MSCs重塑肿瘤微环境后,肿瘤细胞生物学行为的变化特征,而且能为将MSCs发展成为安全有效的抗肿瘤和损伤组织修复工具提供理论指导㊂6㊀结语SDF⁃1及其受体CXCR4构成的SDF⁃1/CXCR4轴对细胞的多种生物学行为起着重要调控作用㊂近年来,越来越多的研究证实了SDF⁃1/CXCR4轴在MSCs对损伤组织进行修复过程中所扮演的重要角色㊂本文主要总结了MSCs在参与心肌梗死㊁肾脏疾病㊁骨组织损伤㊁脑损伤修复以及肿瘤微环境重塑中的主要生物学效应以及SDF⁃1/CXCR4信号轴在该过程中的关键信号介导作用(表1)㊂尽管人们在该领域的研究已取得了不少成果,但目前人们对于SDF⁃1/CXCR4轴参与MSCs介导的损伤组织修复的详细分子机制还缺乏系统㊁深入的认识㊂另一㊃802㊃北京生物医学工程㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀㊀第43卷方面,近年的研究发现CXCR7是SDF⁃1的另一受体㊂对于SDF⁃1/CXCR7在MSCs参与的损伤组织修复中的作用以及CXCR4与CXCR7之间的关系,有许多工作尚需进一步深入探索㊂随着国内外学者对SDF⁃1/CXCR4和SDF⁃1/CXCR7影响MSCs增殖㊁迁移㊁分化等生物学行为研究的不断深入,SDF⁃1/CXCR4和SDF⁃1/CXCR7参与MSCs进行组织修复的分子机制及相关信号调控网络将被逐步阐明,这对更好地将MSCs应用于损伤组织修复和再生医学具有重要意义㊂表1㊀MSCs在不同损伤组织修复中的生物学效应Table1㊀ThebiologicaleffectsofMSCsintherepairofdifferentdamagedtissues损伤组织类型主要生物学效应参考文献心肌梗死SDF⁃1/CXCR4促进MSCs定向迁移;MSCs阻止心肌细胞凋亡,促进血管生成[5-8]肾脏组织损伤SDF⁃1/CXCR4提高MSCs趋化性,促进其旁分泌作用;MSCs促肾脏细胞增殖㊁抗凋亡㊁抗炎㊁抗纤维化和促血管生成[10-12]骨组织损伤SDF⁃1/CXCR4增强MSCs的募集和归巢;诱导MSCs的成骨分化,加速新骨形成[15-20]脑组织损伤MSCs上调SDF⁃1和CXCR4表达;诱导MSCs的迁移㊁粘附;调节脑卒中组织的免疫反应和造血作用[21-27]肿瘤微环境重塑SDF⁃1/CXCR4促进MSCs向肿瘤组织迁移;MSCs对肿瘤细胞增殖㊁侵袭和转移起抑制或促进作用,对肿瘤细胞生物学行为的影响呈现双向效应[29-38]参考文献[1]㊀FuX,LiuG,HalimA,etal.Mesenchymalstemcellmigrationandtissuerepair[J].Cells,2019,8(8):784.[2]㊀SadriF,RezaeiZ,FereidouniM.ThesignificanceoftheSDF⁃1/CXCR4signalingpathwayinthenormaldevelopment[J].MolecularBiologyReports,2022,49(4):3307-3320.[3]㊀LingL,HouJ,LiuD,etal.ImportantroleoftheSDF⁃1/CXCR4axisinthehomingofsystemicallytransplantedhumanamnion⁃derivedmesenchymalstemcells(hAD⁃MSCs)toovariesinratswithchemotherapy⁃inducedprematureovarianinsufficiency(POI)[J].StemCellResearch&Therapy,2022,13(1):79.[4]㊀FreitasC,WangX,GeY,etal.Comparisonoftroponinelevation,priormyocardialinfarction,andchestpaininacuteischemicheartfailure[J].CJCOpen,2020,2(3):135-144.[5]㊀TangJ,WangJ,GuoL,etal.Mesenchymalstemcellsmodifiedwithstromalcell⁃derivedfactor1αimprovecardiacremodelingviaparacrineactivationofhepatocytegrowthfactorinaratmodelofmyocardialinfarction[J].MoleculesandCells,2010,29(1):9-19.[6]㊀JiangQ,HuangK,LuF,etal.ModifyingstrategiesforSDF⁃1/CXCR4interactionduringmesenchymalstemcelltransplantation[J].GeneralThoracicandCardiovascularSurgery,2022,70(1):1-10.[7]㊀ZhangM,MalN,KiedrowskiM,etal.SDF⁃1expressionbymesenchymalstemcellsresultsintrophicsupportofcardiacmyocytesaftermyocardialinfarction[J].FASEBJournal,2007,21(12):3197-3207.[8]㊀ZhuangY,ChenX,XuM,etal.Chemokinestromalcell⁃derivedfactor1/CXCL12increaseshomingofmesenchymalstemcellstoinjuredmyocardiumandneovascularizationfollowingmyocardialinfarction[J].ChineseMedicalJournal,2009,122(2):183-187.[9]㊀ZhaoTT,LiuJJ,ZhuJ,etal.SDF⁃1/CXCR4⁃mediatedstemcellmobilizationinvolvedincardioprotectiveeffectsofelectroacupunctureonmousewithmyocardialinfarction[J].OxidativeMedicineandCellularLongevity,2022,2022:4455183.[10]㊀Sierra⁃ParragaJM,MerinoA,EijkenM,etal.Reparativeeffectofmesenchymalstromalcellsonendothelialcellsafterhypoxicandinflammatoryinjury[J].StemCellResearch&Therapy,2020,11(1):352.[11]㊀LiuH,LiuS,LiY,etal.TheroleofSDF⁃1⁃CXCR4/CXCR7axisinthetherapeuticeffectsofhypoxia⁃preconditionedmesenchymalstemcellsforrenalischemia/reperfusioninjury[J].PLoSOne,2012,7(4):e34608.[12]㊀TögelF,IsaacJ,HuZ,etal.RenalSDF⁃1signalsmobilizationandhomingofCXCR4⁃positivecellstothekidneyafterischemicinjury[J].KidneyInternational,2005,67(5):1772-1784.[13]㊀KameishiS,DunnCM,OkaM,etal.Rapidandeffectivepreparationofclonalbonemarrow⁃derivedmesenchymalstem/stromalcellsheetstoreducerenalfibrosis[J].ScientificReports,2023,13(1):4421.[14]㊀SunX,LiX,QiH,etal.MiR⁃21nanocapsulespromoteearlybonerepairofosteoporoticfracturesbystimulatingtheosteogenicdifferentiationofbonemarrowmesenchymalstemcells[J].JournalofOrth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40万以上大型仪器设备
仪器编号仪器名称型号所属实验室名称仪器负责人19840164色谱质谱联用仪VG/ZAB-HS 天然药物及仿生药物国家重点实验室冉福香19870265顺磁共振波谱仪ESP-300 天然药物及仿生药物国家重点实验室宋书香19971494核磁共振波谱系统INOVA-500/51 天然药物及仿生药物国家重点实验室李勤19981102超薄切片机UCT (带冷冻装置)医药卫生分析中心常昕19990483核磁共振波谱仪JNM-AL300 天然药物及仿生药物国家重点实验室孙徐林19990484透射式电子显微镜JEM-1230 医药卫生分析中心张雷19991029流式细胞计FACS Vantage_DiVa 医药卫生分析中心马士良20000563细胞照射仪GC-1000 自身免疫病研究室吕平20010555液质联用仪Qstar_MS 天然药物及仿生药物国家重点实验室李军20011322动脉血压监测仪DSI 分子心血管教育部重点实验室平台康继宏20012873遗传分析仪3100 表观遗传分子机制研究室赵红珊20012874定量PCR 仪7700 分子病理实验室李燕2001403316导生理记录仪MP150 中医药现代研究中心实验室赵明波20020853气相色谱-质谱联用仪Trace MS 天然药物及仿生药物国家重点实验室陶海燕20021593组合式太平柜ZTXⅢ-57 生物医学实验教学中心谷培良20022022扫描探针显微镜NanoScope Ⅳ单分子与纳米生物学实验室王丽珺宋泉声20022422流式细胞仪FACS Calibur 分子免疫研究室(北京大学人类疾病基因20022727库仑阵列检测分析系统5600A 神经科学实验室王昕虹20031272等离子体质谱仪Elan DRCⅡ中心仪器室刘雅琼20032149离子阱质谱仪LCQ Advantage 生药学生物技术研究室叶敏20032288超速离心机L-80XP 病毒感染与肿瘤鲁凤民20032655流式细胞仪FACS Calibur 病毒感染与肿瘤鲁凤民20032947麻醉机7900 北大一院动物室李军20041857圆二色散光谱仪J-810 天然药物及仿生药物国家重点实验室张蔚青20041937生物液相色谱仪BioLC 细胞生物学实验室张页20042196流式细胞仪FACSCalibur 北京大学干细胞研究中心张小燕20042198超速离心机CP70MX 分子心血管教育部重点实验室平台向若兰20042200流式细胞仪FACSAria 医药卫生分析中心苏黎20042201流式细胞仪FACSCalibur 医药卫生分析中心苏黎7230 人民医院高血压科孙宁玲20042312便携式Caris彩色多谱勒系统7250 人民医院高血压科孙宁玲20042313台式Megas彩色多谱勒系统20042328表面等离子共振仪Biacore 3000 药物化学实验室刘莉20042466流式细胞仪FACSCalibur 医药卫生分析中心贾永蕊DV887 单分子与纳米生物学实验室王丽珺20042500单分子探测及谱学成像装ZBL1664型解剖实验室谷培良20050501人体标本冷藏柜(一组64具尸位)ZBL1664型解剖实验室谷培良20050502人体标本冷藏柜(一组64具尸位)20051521毛细血管电泳仪P/ACE MDQ 北大三院药剂科张现化20051523液质联用仪API3000 北大三院药剂科张现化20051758核磁共振波谱仪500兆天然药物化学研究室屠鹏飞20060502超级综合模拟系统HPS 北大一院妇产科吴浩20061859目标蛋白快速鉴定系统PA800 天然药物及仿生药物国家重点实验室张亮仁Vevo 770 心血管研究所张幼怡20061869高分辨小动物实时影像系20062620激光捕获显微切割仪LMD 6000 肿瘤分子实验室郭丽梅20062624目标蛋白快速分离系统PF-2D 天然药物及仿生药物国家重点实验室付宏征20062654红外激光成像系统0dyssey 北京大学干细胞研究中心张小燕天然药物及仿生药物国家重点实验室冉福香20062701傅立叶变换离子回旋共振FTMS-2 APEX Ⅳ 70e20063892智能存储磁盘阵列AMS200 图书馆办公室张远20071080激光显微切割系统LMD6000 北大一院中心实验室戚豫20072801流式细胞仪FACSCalibur 生化系公用实验室蒋卫UltiMate 3000 医药卫生分析中心娄雅欣20072804高效液相色谱仪 (已付90%款)20073363电子内窥镜SSD-a5 北大一院外科梁进雨20073492液相色谱质谱联用仪(90%款)6410 北大三院药剂科张现化20080114激光共聚焦显微镜 (90%)FV1000S 生化系公用实验室蒋卫20081139腹腔镜手术模拟器Lap Mentor Ⅱ北大一院教学办公室高嵩20081140流式细胞仪FACSAria 北大一院中心实验室戚豫20081238液相色谱质谱联用仪6322 中医药现代研究中心实验室赵明波TCS SP5 医药卫生分析中心何其华20090866双光子激光共聚焦显微镜天然药物及仿生药物国家重点实验室孙徐林20090917核磁共振波谱仪AVANCE Ⅲ 40020090946透射电子显微镜JEM-1400(HC) 神经病理实验室王盛兰20090994透射电镜成像系统832.10W 神经病理实验室王盛兰20092011变性高效液相色谱仪3500 乳腺肿瘤实验室李燕Inveon 北大三院骨科冷慧杰20092105小动物分子影像分析系统20092356生物力学实验机MTS Bionix 北大三院骨科冷慧杰20092731PACS/RIS影像传输系统PACS/RIS 北大一院放射科叶锦棠Tecnai G2F30 单分子与纳米生物学实验室黄新瑞20092738场发射冷冻透射电子显微20092770减震仪STACIS 2100 生物大分子复合物实验室黄新瑞20101376全自动生化分析仪UniCel Dxc600 北大一院肾内科陈育青40C+Acublade+SurhiTo北大一院耳鼻喉科关惠20101537二氧化碳耳鼻喉激光系统北大一院耳鼻喉科肖水方20101600电子鼻咽喉镜ENF-VT2内窥镜 ENF-V2内窥镜2个北京大学首钢医院教办刘建华20101801综合教学模拟人Simman Ⅱ(211-00050)20101815手术显微镜NC4 PICO 北大一院耳鼻喉科沈泓20101886正置荧光显微镜Axio Imager.A2天然药物及仿生药物国家重点实验室徐波20101900腹腔镜手术模拟器Lap Mentor Ⅲ北京大学首钢医院教办刘建华20101903血管介入手术模拟器ANGIO Mentor 北京大学首钢医院教办刘建华20101981液质联用仪4000 QTRAP 创新药物实验平台卢炜OmniPiex 128 解剖实验室濮鸣亮20101996128通道神经信号记录系统0678-000-537 北大一院耳鼻喉科沈泓20102292耳鼻喉科一体化腔镜手术Qpatch16创新药物实验平台卞希玲20102447高通量全自动膜片钳系统20102449耳鼻喉手术模拟器TempoSurg 北大三院教育处朱丽20102450手术显微镜M844 北大三院教育处李学民20103920高速流式细胞分选仪BD Influx 北大一院泌尿科刘武江FLEXMAP 3D 北大一院泌尿科刘武江20103921蛋白多功能液相分析平台IVIS Spectrum 北大一院泌尿科刘武江20103922小动物体内可见光三维成20110196小动物活体成像系统Maestro 2 医药卫生分析中心雷连娣20110658核磁共振波谱仪VNMRS 天然药物化学研究室赵明波CateLyst 5 天然药物及仿生药物国家重点实验室徐波20110663全自动高通量药物筛选机20110970多功能酶标仪FlexStation3 创新药物实验平台王银叶20111040腹腔镜手术训练系统LAP Mentor 北大一院教育处王颖天然药物及仿生药物国家重点实验室金宏威20111104刀片服务器集群M1000e 10U 含管理软件\存储系统20111177石英晶体微天平分析仪Q-Sense E4 创新药物实验平台蒲小平QTRAP 5500 心血管研究所李彦辉20111184串联四级杆-线性离子肼质谱仪20111273激光多普勒组织血流灌注LDLS 天然药物及仿生药物国家重点实验室铁璐20111274小动物活体成像系统IVIS Spectrum 医药卫生分析中心雷连娣20111315温度感觉测试系统Pathway(TSA) 北大口腔医院咀嚼生理研究室谢秋菲20111585胎儿分娩模拟系统P80 北大三院教育处张祺20111769膝关节镜治疗模拟系统VA 北大三院教育处张祺Labturbo 96 流行病实验室陈大方20111954全自动高通量核酸纯化工20111955平行反应站Unit RS10 天然药物及仿生药物国家重点实验室王媛20112156遗传分析系统GeXP 流行病实验室陈大方20112157多模式活体成像系统FX PRO 药剂学实验室王坚成20112165细胞生长分析系统CSI 生化系公用实验室蒋卫20112175激光共聚焦显微镜FV1000 神经科学实验室卞希玲20112364磁盘阵列CX240 北大一院计算机室姜勇20112976数据库服务器P750 北大一院计算机室姜勇20112977数据库服务器P750 北大一院计算机室姜勇20113215眼睛显微成像系统Micron Ⅲ北大三院眼科杨丽萍20113218液相悬浮芯片系统Bio-Plex 流行病实验室陈大方20113232激光共聚焦显微镜TCS SP5Ⅱ分子心血管教育部重点实验室平台王允玲LCMS-IT-TOF 创新药物实验平台徐风20113353高效液相-离子阱-飞行时间质谱联用仪20113416心血管成像系统Innova4100-IQ北大一院介入血管外科刘伯山20113852钬激光治疗仪PowerSuite60w 北大一院泌尿科金杰1188HD 人民医院创伤骨科姜保国20114417骨科微创可视化教学系统20114834宫腔镜手术模拟器Hystsim 北大三院教育处张琪20114958停流反应动力学分析仪SX20 创新药物实验平台杨宝学E2695-SQD 天然药物及仿生药物国家重点实验室王媛20114959高效液相色谱四极杆质谱E2695-WFCⅢ-SQD天然药物及仿生药物国家重点实验室王媛20114960小规模制备液相色谱质谱E2695TQD 天然药物及仿生药物国家重点实验室王媛20114961高效液相色谱四极杆串联天然药物及仿生药物国家重点实验室李勤20114995核磁共振波谱仪AVANCE Ⅲ 60020115169倒置荧光显微镜IX81 神经科学实验室廖斐斐20120036手术显微镜OPMI Lumera 700 人民医院眼科黎晓新EP-WorkMate 北大一院心研所霍勇20120041心脏电生理多导记录系统20120078内窥镜摄像装置S368 北大一院骨科李淳德荣荣20120095经颅磁刺激器Rapid2 北大第六医院社会精神病马晓燕20120096高性能集群系统曙光5000HPC系统系统生物医学研究所王立坤Metafer人民医院血液病研究所霍明瑞20120114染色体自动扫描和分析系20120116液质联用仪API4000 药剂学实验室王坚成20120122液质联用仪API3200 北大第六医院儿童室王玉凤20120495箱式冷冻干燥机ERV085 药剂学实验室王坚成天然药物及仿生药物国家重点实验室崔育新李勤20120498核磁共振波谱仪AVANCE Ⅲ 400创新药物实验平台孙徐林20120499核磁共振波谱仪AVANCE Ⅲ 40020120500流式细胞仪Gallios 医药卫生分析中心吴后男7700X 中心仪器室刘雅琼20120502电感耦合等离子体质谱仪20120573高效液相色谱四极杆-飞行时间质谱联用仪UPLC-Xevo G2 Qtof天然药物及仿生药物国家重点实验室李军20120604眼电生理诊断系统RETI-Port/Scan21 北大一院眼科杨柳20121110腔内碎石清石机LithoClast Master 北大三院泌尿科马潞林北大口腔医院计算中心吕培军20121196口腔专用CAD/CAM系统T1切削仪/S107扫描仪/Air吸尘器20121222高通量基因测序仪Seq 1000 系统生物医学研究所孟祥燕20121272定量遗传分析系统Pyro-Mark Q96 ID 流行病实验室陈大方BioIon XX2分子心血管教育部重点实验室平台郑铭20121281细胞收缩微血管张力与离20121388面部三维测量仪Face scan 北大口腔医院计算中心吕培军20121514激光眼科诊断仪Spectralis-OCT 北大三院眼科吴乐萌UltraView VOX 免疫学系办公室吕平20121523活细胞激光共聚焦成像分20121863基因质谱分析系统MassARRAY Analyzer 4儿少卫生实验室王海俊20121866流式细胞仪FACS Aria Ⅱ免疫学系办公室孙秀媛20121867流式细胞分选仪SORP Aria 医药卫生分析中心吴后男20121902呼吸代谢分析系统* 分子心血管教育部重点实验室平台康继宏20121987中高端网络交换机6509E-S720-3C 医学部信息通讯中心郝宇红20122402无创主动脉脉波分析仪SphygmoCor Px 北大三院心内科于海奕20122488流式细胞仪Gallios(Demo) 免疫T细胞研究室孙秀媛20122494超速离心机Optima L-100XP 生化系公用实验室陈静FIVE 1 分子心血管教育部重点实验室平台付毅20122780活体激光共聚焦成像系统20122814容灾备份设备CDP SA515 北大一院计算机室周国鹏20122862微波消解系统UltraWAVE 中心仪器室刘雅琼FACSAriaⅡ北大肿瘤医院中心实验室闫锟20123351高速分选型流式细胞仪液20123865多功能读板机FLEX3 系统生物医学研究所孟祥燕20123866分子成像系统PharosFX Plus 医药卫生分析中心贾兵20124687医学生集成信息管理系统* 北大一院计算机室周国鹏UitraView VOX 北大三院妇科生殖于洋201262163D活细胞激光共聚焦成像分析系统20127456微阵列扫描仪InnoScan 900 北大三院妇科生殖于洋2013056632通道肌电/诱发电位仪监测系统Protector 北大一院骨科李淳德荣荣20130664牙科光学快速成型机Mini DDP 北大口腔医院计算中心赵一娇20130666腹腔镜手术模拟器LAP Mentor 人民医院教育处姜冠潮20130683全自动氨基酸分析仪L-8900 医药卫生分析中心王雯20130926三维激光共聚焦显微系统VR-X200K 北大口腔医院计算中心赵一娇20130927个人基因组测序仪MiSeq 北大第六医院生化室岳伟华20130937连续流动化学反应系统Labtrix S1 创新药物实验平台李润涛20131165微量点样仪RS1000 北大第六医院生化室王力芳20131182基因分析仪3500 人民医院血液病研究所霍明瑞20131188激光扫描共聚焦显微镜TCP SP8 医药卫生分析中心何其华20131414荧光定量PCR仪7500 FAST 人民医院皮肤科张建中20131447基因分析仪3130XL 北大三院眼科杨丽萍20131456激光共聚焦显微镜TCS SP5 Ⅱ北大一院皮肤科林志淼20131457数字切片扫描装置C10730-Ⅱ北大一院皮肤科汪旸20131458流式细胞仪FACSCalibur 人民医院儿科刘桂兰田开功20131509光学相干断层扫描仪Spectrakis 北大一院眼科彭媛20131517影像尿动力学检查系统Solar 北大三院泌尿科马璐林田晓军20131522激光显微切割系统LMD7000 北大口腔医院中心实验室李翠英5800 医药卫生分析中心娄雅欣20131547纳升级高效液相-串联飞行时间质谱联用仪4000 Qtrap 医药卫生分析中心娄雅欣20131548线性离子阱串联三级四级Orbitrap Velos Pro 医药卫生分析中心娄雅欣20131549二维纳升级高效液相色谱-线性离子阱20131565个体化组基因测序仪Ion Torrent 肿瘤分子实验室李宁20131566基因分析仪3500 肿瘤分子实验室李宁20132048高通量芯片分析系统FlexMAP 3D北大一院肾内科赵明辉杨莉20132092流式细胞仪Moflo XDP 分子细胞生物学与肿瘤生物学实验室唐岩LSM780分子细胞生物学与肿瘤生物学实验室唐岩20132161激光共聚焦活细胞成像显IX81 人民医院泌尿科徐涛20132178电动倒置式系统显微镜(20133771全自动核酸提取仪JANUS 北大三院妇产科于洋Orbitrap Elite 系统生物医学研究所赵旭阳20133840二维双压线性离子阱-高场静电杂交质谱系统20133863微滴式数字PCR系统QX100 北大口腔医院预防科室陈宵迟20134041激光扫描共聚焦显微镜FV1200北大三院运动医傅欣Q Exactive 系统生物医学研究所赵旭阳20134065四级杆-静电场轨道肼串联高分辨质谱仪20134325低温细胞培养箱工作站H35北大一院肾内科唐嘉薇赵明辉20134399流式细胞仪LSRFortessa 人民医院血液病研究所黄晓军20134497运动代谢分析系统Treadmill 分子心血管教育部重点实验室平台康继宏20134498细胞代谢呼吸动态分析仪XF-24 分子心血管教育部重点实验室平台赵晶20135046体脂测量仪EchoMR-700 分子心血管教育部重点实验室平台康继宏20135165超速离心机Optima L-XP 医药卫生分析中心王雯20135450综合智能心肺仿生训练系泰斯 TS-Ⅱ北大三院教育处张祺20135649小动物分子影像分析仪Inveon北大口腔医院正畸科室刘浩20136147高内涵分析仪Operetta 天然药物及仿生药物国家重点实验室徐波20136149高分辨活细胞成像系统UltraVIEW VoX 天然药物及仿生药物国家重点实验室徐波张强医学部信息通讯中心李爽20136339智能存储器MS5520 含10G模块*2/8G模块*220136681激光器升级套件AriaⅡ405 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12FF400人民医院泌尿科徐涛201505529专业彩色多普勒超声诊疗EndoPAT-2000北大一院心内科薛林201505650无创血管内皮功能诊断系201505656流式细胞仪FACS Verse北大一院肾内科张颖201505659正置显微镜Ni-E北大三院妇科生殖李蓉201505685激光扫描检眼镜200Tx人民医院眼科黄旅珍2002-8/包含8666-RF腹腔镜探头(序列号3910858)北大三院泌尿科寇允庚201505868彩色多普勒超声诊断扫描201506057平衡测试机训练系统MTD 1040-00北大三院运动医胡晓青CON-TREX-WS-2北大三院运动医胡晓青201506058本体感觉姿势板测试系统201506059等速测试与评定系统CON-TREX-WS-1北大三院运动医胡晓青201506102内窥镜荧光摄像系统PC9000人民医院妇科赵丽君STT3K0-DF天然药物及仿生药物国家重点实验室刘振明201600343自动化样品存储管理系统201600610拉曼光谱仪DXR北大口腔医院中心实验室武岩TSQ Quantiva北大三院病理科武睿201600847液相色谱三重四级杆质谱201600850快速蛋白色谱系统AKTA pure北大一院肾内科张颖医学部信息通讯中心宋式斌6芯光纤;敷设GYTA-6B1 G652光缆26公里201600998互联网接入服务费(6芯光纤)201601010流式细胞仪Aria III北大口腔医院正畸科室罗青201601043高内涵宽场成像系统Operetta北大肿瘤医院细胞生物学研究室赵威201601045全自动液体处理工作站FEVO150-8北大肿瘤医院标本库胡颖201601134超级综合无线模拟人212-02033护理学院实验教学中心路潜201601200超快速液相色谱-超快速三重四级杆质谱联用仪LCMS-8050生药学研究室徐风201601309统一存储及虚拟化设备MS7010医学部信息通讯中心李爽Prime 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4000医学部信息通讯中心李爽教学考试终端计算机多媒体实验室郭建光201601943计算机多媒体实验室逸夫806室教学考试终端计算机多媒体实验室郭建光201601945计算机多媒体实验室逸夫802室教学考试系统计算机多媒体实验室郭建光201601946计算机多媒体实验室逸夫809室教学考试系统计算机多媒体实验室郭建光201601947计算机多媒体实验室逸夫816室教学考试系统计算机多媒体实验室郭建光201601948计算机多媒体实验室逸夫812室201602005生物样本照射系统RS2000PRO生化系公用实验室王丽娜201602065蛋白结晶筛选机器人Mosquito Lcp系统生物医学研究所梁令201602545多媒体教室 312三星S22E390H北大三院教育处于丽华201602546多媒体教室 313三星S22E390H北大三院教育处于丽华201603443超声模拟训练系统U/S Mentor人民医院教育处叶辉201604074面部扫描系统FACESCAN北大口腔医院正畸科室罗青201604096单分子免疫分析仪singulex erenna分子病理实验室刘小旦201604105全自动酶免分析仪Analyzer 1北大一院肾内科张颖201604110彩色多普勒超声诊断仪VOLUSON S6北大一院妇产科魏玉梅201604111彩色多普勒超声诊断仪VOLUSON E10北大一院妇产科魏玉梅201604883超高分辨率小动物超声影Vevo2100人民医院心内科李慧萍MyLabAlpha北大一院麻醉科宋文芳201604890便携式彩色多普勒超声扫MyLabAlpha北大一院麻醉科宋文芳201604891便携式彩色多普勒超声扫201605041彩色多普勒超声扫描仪Aixplorer北大一院超声中心陈路增M9北大一院超声中心陈路增201605043便携式彩色多普勒超声扫M9北大一院体检中心李霞201605044便携式彩色多普勒超声扫201605045便携式彩色多普勒超声扫M9北大一院肾内科张颖201605113蛋白液相色谱系统akta avant25北大一院肾内科张颖201605208彩色多普勒超声扫描仪EPIQ7北大一院超声中心陈路增201605209彩色多普勒超声扫描仪EPIQ7C北大一院心内科薛林201605210彩色多普勒超声扫描仪EPIQ7北大一院泌尿科陈翔201605306超声诊断系统ACUSON S2000北大一院妇产科魏玉梅计算机多媒体实验室郭建光201605386计算机教学考试系统OPTIPLEX 5040(59套)\PowerEdge R730服务器\交互触控系统\无线音频\功放\音箱\话201605611彩色超声诊断系统WS80A北大三院妇产科李蓉201605612彩色超声诊断系统Resona7北大三院超声诊断科闫晶201605613彩色超声诊断系统HI VISION Ascendus北大三院超声诊断科闫晶201605614彩色超声诊断系统MyLab Twice北大三院超声诊断科闫晶201605615彩色超声诊断系统LOGIQ E9北大三院超声诊断科闫晶201605664脊柱运动测量系统Optotrak Certus Spine北大三院骨科王红201606061B超检查仪EPIQ 7人民医院设备处赵超颖201606062超声诊断系统ACUSON3000人民医院设备处赵超颖201606063B超检查仪器Aixplorer人民医院设备处赵超颖201606068组织脱水机Pelois II北大口腔医院正畸科室罗青skyscan1174北大口腔医院正畸科室罗青201606075桌面型Micro-CT断层扫描仪201606076傅立叶红外光谱仪Nicolet iN10MX北大口腔医院正畸科室罗青201606090平面微电极阵列记录系统3Brain BioCAM X北大一院儿科顾强201606596超速离心机Optima xpn-100北大口腔医院正畸科室罗青201606635维多利亚分娩模拟人S2200北大一院教育处王颖201606637SimMom 模拟产妇病人377-02050北大一院教育处王颖201606638SimBaby 婴儿模拟病人245-02033北大一院教育处王颖212-02033北大一院教育处王颖201606639SimMan 3G综合无线模拟人系统Harvey-A北大一院教育处王颖201606640Harvey 心肺功能模拟病人201606643全细胞电生理系统MultiClamp北大第六医院生化室卢天兰201606662小鼠自动给药系统ENV-307W-CT药物依赖研究所薛言学Leica TCS SP8 STED 3医药卫生分析中心何其华201700253超高分辨率共聚焦显微镜201700352原子力显微镜Dimension ICON北大口腔医院计算中心赵一姣201700381下一代防火墙PA5060PA5060医学部信息通讯中心孙浩志201700449IVC蓝线NEXT饲养设备TN162系统生物医学研究所侯知源北大一院皮肤科万喆201700569基质辅助激光解吸电离飞MALDI-TOF/TOF SystemIncuCyteZOOM北大口腔医院中心实验室武岩201700588长时间动态细胞观察及功201700589智能流式细胞分选仪FACS AriaⅡ北大口腔医院中心实验室武岩201700610全二维液相色谱系统LC-30AD天然药物化学研究室郭晓宇201700625等温滴定微量热仪MICROCAL PEAQ ITC天然药物及仿生药物国家重点实验室徐波系统生物医学研究所侯知源201700714小动物活体成像系统IVIS lumina XRMS Serie201700734高分辨率线粒体呼吸机Oxygraph-2k分子心血管教育部重点实验室平台郑铭201700847飞秒激光器Amplitude北大口腔医院计算中心赵一姣201701236微量热等温滴定量热仪Microcal ITC200系统生物医学研究所梁令201701460流式细胞分选仪Melody生化系公用实验室蒋卫Q Exactive HF医药卫生分析中心娄雅欣201701763超高分辨质谱液质联用仪MX2北大一院儿科金红芳201701883植入式生理信号遥测系统377-025050护理学院实验教学中心路潜201701980综合分娩胎心监护模拟人Endo PAT2000北大三院心内科于海奕201702034无创血管内皮功能诊断系201702133超速离心机optima XPN-100分子心血管教育部重点实验室平台季亮201702149超级综合无线模拟人1212-02033护理学院实验教学中心路潜201702150超级综合无线模拟人2212-02033护理学院实验教学中心路潜201702151心肺功能模拟人HARVEY护理学院实验教学中心路潜。
Gelucire-14-44-SDS-MedChemExpress
Inhibitors, Agonists, Screening LibrariesSafety Data Sheet Revision Date:Nov.-23-2018Print Date:Nov.-23-20181. PRODUCT AND COMPANY IDENTIFICATION1.1 Product identifierProduct name :Gelucire 14/44Catalog No. :HY-Y1892CAS No. :121548-04-71.2 Relevant identified uses of the substance or mixture and uses advised againstIdentified uses :Laboratory chemicals, manufacture of substances.1.3 Details of the supplier of the safety data sheetCompany:MedChemExpress USATel:609-228-6898Fax:609-228-5909E-mail:sales@1.4 Emergency telephone numberEmergency Phone #:609-228-68982. HAZARDS IDENTIFICATION2.1 Classification of the substance or mixtureNot a hazardous substance or mixture.2.2 GHS Label elements, including precautionary statementsNot a hazardous substance or mixture.2.3 Other hazardsNone.3. COMPOSITION/INFORMATION ON INGREDIENTS3.1 SubstancesSynonyms:NoneFormula:N/AMolecular Weight:N/ACAS No. :121548-04-74. FIRST AID MEASURES4.1 Description of first aid measuresEye contactRemove any contact lenses, locate eye-wash station, and flush eyes immediately with large amounts of water. Separate eyelids with fingers to ensure adequate flushing. Promptly call a physician.Skin contactRinse skin thoroughly with large amounts of water. Remove contaminated clothing and shoes and call a physician.InhalationImmediately relocate self or casualty to fresh air. If breathing is difficult, give cardiopulmonary resuscitation (CPR). Avoid mouth-to-mouth resuscitation.IngestionWash out mouth with water; Do NOT induce vomiting; call a physician.4.2 Most important symptoms and effects, both acute and delayedThe most important known symptoms and effects are described in the labelling (see section 2.2).4.3 Indication of any immediate medical attention and special treatment neededTreat symptomatically.5. FIRE FIGHTING MEASURES5.1 Extinguishing mediaSuitable extinguishing mediaUse water spray, dry chemical, foam, and carbon dioxide fire extinguisher.5.2 Special hazards arising from the substance or mixtureDuring combustion, may emit irritant fumes.5.3 Advice for firefightersWear self-contained breathing apparatus and protective clothing.6. ACCIDENTAL RELEASE MEASURES6.1 Personal precautions, protective equipment and emergency proceduresUse full personal protective equipment. Avoid breathing vapors, mist, dust or gas. Ensure adequate ventilation. Evacuate personnel to safe areas.Refer to protective measures listed in sections 8.6.2 Environmental precautionsTry to prevent further leakage or spillage. Keep the product away from drains or water courses.6.3 Methods and materials for containment and cleaning upAbsorb solutions with finely-powdered liquid-binding material (diatomite, universal binders); Decontaminate surfaces and equipment by scrubbing with alcohol; Dispose of contaminated material according to Section 13.7. HANDLING AND STORAGE7.1 Precautions for safe handlingAvoid inhalation, contact with eyes and skin. Avoid dust and aerosol formation. Use only in areas with appropriate exhaust ventilation.7.2 Conditions for safe storage, including any incompatibilitiesKeep container tightly sealed in cool, well-ventilated area. Keep away from direct sunlight and sources of ignition.Recommended storage temperature:Pure form-20°C 3 years4°C 2 yearsIn solvent-80°C 6 months-20°C 1 monthShipping at room temperature if less than 2 weeks.7.3 Specific end use(s)No data available.8. EXPOSURE CONTROLS/PERSONAL PROTECTION8.1 Control parametersComponents with workplace control parametersThis product contains no substances with occupational exposure limit values.8.2 Exposure controlsEngineering controlsEnsure adequate ventilation. Provide accessible safety shower and eye wash station.Personal protective equipmentEye protection Safety goggles with side-shields.Hand protection Protective gloves.Skin and body protection Impervious clothing.Respiratory protection Suitable respirator.Environmental exposure controls Keep the product away from drains, water courses or the soil. Cleanspillages in a safe way as soon as possible.9. PHYSICAL AND CHEMICAL PROPERTIES9.1 Information on basic physical and chemical propertiesAppearance White to off-white (Oil)Odor No data availableOdor threshold No data availablepH No data availableMelting/freezing point No data availableBoiling point/range No data availableFlash point No data availableEvaporation rate No data availableFlammability (solid, gas)No data availableUpper/lower flammability or explosive limits No data availableVapor pressure No data availableVapor density No data availableRelative density No data availableWater Solubility No data availablePartition coefficient No data availableAuto-ignition temperature No data availableDecomposition temperature No data availableViscosity No data availableExplosive properties No data availableOxidizing properties No data available9.2 Other safety informationNo data available.10. STABILITY AND REACTIVITY10.1 ReactivityNo data available.10.2 Chemical stabilityStable under recommended storage conditions.10.3 Possibility of hazardous reactionsNo data available.10.4 Conditions to avoidNo data available.10.5 Incompatible materialsStrong acids/alkalis, strong oxidising/reducing agents.10.6 Hazardous decomposition productsUnder fire conditions, may decompose and emit toxic fumes.Other decomposition products - no data available.11.TOXICOLOGICAL INFORMATION11.1 Information on toxicological effectsAcute toxicityClassified based on available data. For more details, see section 2Skin corrosion/irritationClassified based on available data. For more details, see section 2Serious eye damage/irritationClassified based on available data. For more details, see section 2Respiratory or skin sensitizationClassified based on available data. For more details, see section 2Germ cell mutagenicityClassified based on available data. For more details, see section 2CarcinogenicityIARC: No component of this product present at a level equal to or greater than 0.1% is identified as probable, possible or confirmed human carcinogen by IARC.ACGIH: No component of this product present at a level equal to or greater than 0.1% is identified as a potential or confirmed carcinogen by ACGIH.NTP: No component of this product present at a level equal to or greater than 0.1% is identified as a anticipated or confirmed carcinogen by NTP.OSHA: No component of this product present at a level equal to or greater than 0.1% is identified as a potential or confirmed carcinogen by OSHA.Reproductive toxicityClassified based on available data. For more details, see section 2Specific target organ toxicity - single exposureClassified based on available data. For more details, see section 2Specific target organ toxicity - repeated exposureClassified based on available data. For more details, see section 2Aspiration hazardClassified based on available data. For more details, see section 212. ECOLOGICAL INFORMATION12.1 ToxicityNo data available.12.2 Persistence and degradabilityNo data available.12.3 Bioaccumlative potentialNo data available.12.4 Mobility in soilNo data available.12.5 Results of PBT and vPvB assessmentPBT/vPvB assessment unavailable as chemical safety assessment not required or not conducted.12.6 Other adverse effectsNo data available.13. DISPOSAL CONSIDERATIONS13.1 Waste treatment methodsProductDispose substance in accordance with prevailing country, federal, state and local regulations.Contaminated packagingConduct recycling or disposal in accordance with prevailing country, federal, state and local regulations.14. TRANSPORT INFORMATIONDOT (US)This substance is considered to be non-hazardous for transport.IMDGThis substance is considered to be non-hazardous for transport.IATAThis substance is considered to be non-hazardous for transport.15. REGULATORY INFORMATIONSARA 302 Components:No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302.SARA 313 Components:This material does not contain any chemical components with known CAS numbers that exceed the threshold (De Minimis) reporting levels established by SARA Title III, Section 313.SARA 311/312 Hazards:No SARA Hazards.Massachusetts Right To Know Components:No components are subject to the Massachusetts Right to Know Act.Pennsylvania Right To Know Components:No components are subject to the Pennsylvania Right to Know Act.New Jersey Right To Know Components:No components are subject to the New Jersey Right to Know Act.California Prop. 65 Components:This product does not contain any chemicals known to State of California to cause cancer, birth defects, or anyother reproductive harm.16. OTHER INFORMATIONCopyright 2018 MedChemExpress. The above information is correct to the best of our present knowledge but does not purport to be all inclusive and should be used only as a guide. The product is for research use only and for experienced personnel. It must only be handled by suitably qualified experienced scientists in appropriately equipped and authorized facilities. The burden of safe use of this material rests entirely with the user. MedChemExpress disclaims all liability for any damage resulting from handling or from contact with this product.Caution: Product has not been fully validated for medical applications. For research use only.Tel: 609-228-6898 Fax: 609-228-5909 E-mail: tech@Address: 1 Deer Park Dr, Suite Q, Monmouth Junction, NJ 08852, USA。
26291346_基于UPLC-MS
Abstract: A UPLC-MS/MS method was established to quantitatively determine the content of alliin in animal plasma to study whether alliin and alliin in garlic enteric preparations can react to produce the active ingredient allicin in the in vivo environment. Methods Reversed-phase C18 column (Waters ICQUITY UPLC BEH, 100 × 2.1 mm, 1.7μm), column temperature: 40 ℃, flow rate: 0.15 mL/min, injection volume: 2μl, Mobile phase: 0.1% formic acid (A)-acetonitrile (B), gradient elution; mass spectrometry ionization: ESI+, determination of allicin in rat plasma . Results The results of two parallel experiments of garlic enteric preparation and enzymatic garlic powder showed that in the garlic enteric preparation with allinase, the plasma concentration of alliin in the blood of rats was significantly lower. Conclusion A UPLC-MS/MS method for the quantitative determination of alliin in animal plasma has been established. Alliin and alliin in garlic enteric-coated preparations can react in vivo.Key words: Garlic enteric preparation; garbonine; UPLC-MS-MS基于UPLC-MS/MS大蒜肠溶制剂中蒜氨酸、蒜酶体内反应情况研究杨亮1,胡小霞4 ,宋百灵4,关明3,李新霞2*(1.新疆警察学院 新疆 乌鲁木齐 8300112.新疆医科大学药学院 新疆 乌鲁木齐 8300113.新疆师范大学化学化工学院 新疆 乌鲁木齐 8300544.新疆医科大学中心实验室 新疆 乌鲁木齐 830011)Study on the Reaction of Garlic and Uterine in the UPLC-MS / MS of Garlic SausolYANG Liang 1,HU Xiaoxia 4 ,SONG Bailing 4,GUAN Ming 3,LI Xinxia 2*(1. Xinjiang Police College, Urumqi 830054, Xinjiang China2.Chemistry and Chemical Engineering of Xinjiang Normal University College, Urumqi 830054, Xinjiang China3.School of Pharmacy, Xinjiang Medical University, Urumqi 830011, Xinjiang China4.Central Laboratory of Xinjiang Medical University, Urumqi 830011, Xinjiang China )摘要:目的 建立定量测定动物血浆中蒜氨酸含量的UPLC-MS/MS 方法,研究大蒜肠溶制剂中蒜氨酸、蒜酶能否在体内环境下反应生成活性成分大蒜辣素。
QPCR及QRT-PCR系列产品
Invitrogen的ICFC系列产品促销1.QPCR及QRT-PCR系列产品Invitrogen公司专门为中国客户提供的定量PCR试剂盒,结合了 UDG 防止残余污染技术和SYBR® Green I 荧光染料(存在于SYBR® Green I荧光定量PCR试剂盒中),在美国接受了严格的质量监控,可提供极高灵敏度的目的序列定量检测,线性剂量低,反应浓度范围很大。
qPCR Supermix-- 即用型反应剂,专为高特异性、实时定量DNA扩增设计UDG-- 防止携带污染物,减少克隆片段假阳性结果ROX参考染料-- 适用ABI仪器的校正染料产品信息活动时间:即日起至2009年4月30日2.Gibco南美胎牛血清即日起凡优惠价¥1780购买Gibco胎牛血清500ml(目录号:C2027050)即可获赠送价值¥250现金抵用券。
您可以凭现金抵用券在英韦创津公司购买任何商品,此券有效期至2009年5月31日。
产品信息活动时间:即日起至2009年4月30日独特的采集方式:GIBCO采用无菌心脏穿刺的方式采血原装直送,避免污染:原产地采集、加工、检测、包装。
完善的质控:采集、处理、检测、运输等环节都有文件和证书。
3.Invitrogen TA Cloning克隆产品专门用于克隆Taq聚合酶扩增的PCR产物。
采用pCR载体,能产生80%以上的重组产物,90%以上重组产物都包含插入片段。
产品信息活动时间:即日起至2009年5月31日附:pCR载体优点及图谱:3’-T突出端可直接连接Taq扩增的PCR产物可选择T7或T7和Sp6启动子进行体外RNA转录和测序侧向EcoRⅠ位点的通用多接头位点方便了插入片段的切离可以选择卡那霉素或氨苄青霉素进行筛选非常简便的蓝/白克隆筛选具有M13正向和反向引物位点,方便测序4.GIBCO液体培养基系列产品创立近50年的历史,品质优秀,产品种类丰富;为了中国用户利益,特建立国内生产线;所有产品,从原材料到生产全部按照GIBCO质量标准进行,每批均送抵美国公司总部质检合格后,才在国内销售。
美国Medchemexpress化合物库(小分子库)_Medchemexpress_(MCE中国)
美国Medchemexpress化合物库(小分子库)-原装进口,现货供
应,提供组合定制服务
品牌:Medchemexpress (MCE)
保存条件:-20℃
供应商:MCE中国
数量:大量
保质期:2年
Size:
Pre-dissolved DMSO/Solid(Or dry solid)
100 uL/well (10 mM solution)
200 uL/well (10 mM solution)
MedChemExpress (MCE)专注于各种抑制剂、调节剂、API、天然产物及化合物库,总部位于美国新泽西。
MCE经过十年努力已成为全球生物活性小分子领域的一流供应商。
MedChemExpress(MCE)产品涵盖近20个热门研究领域,1000多个细分靶点,超过3000个现货抑制剂、拮抗剂和激动剂。
相关的应用成果已发表于Nature、Cell等国际知名杂志,在全球20余个国家地区设有代理机构。
上海皓元生物医药科技有限公司(MCE 中国) 是MedChemExpress (MCE) 亚洲总代理。
MCE化合物库涵盖20余种不同的类型,超过2500个化合物,进口原装,
现货供应,提供详实的生物活性信息、化学结构信息、质控图谱(NMR和HPLC 等)。
还可根据您的实际研究需要,为您度身定制任意组合、规格、布板的特殊化合物库。
/screening-libraries.html
现有特色化合物库有:。
FUNDC1调控肺癌A549细胞及其干细胞的生长、自噬、凋亡和细胞干性的研究
Westernblotting实验被用来检测目标蛋白的表达水平。 首先,将收集到的细胞在低温条件下使用含 1%蛋白酶抑制
剂的预冷细胞裂解缓冲液进行裂解,4℃ 11451×g离心 30 min,使用 BCA试剂盒(翊圣生物,上海)测定上清液中的蛋 白含量。SDS-PAGE(10%)被用来分离等量的蛋白样本,随 后进行转膜,并使用 5%的脱脂牛奶于室温下封闭两小时。 经过三次的 TBS缓冲液清洗后,一抗 (均为 兔 抗 多 克 隆 抗 体)过夜孵育蛋 白 膜 (anti-FUNDC1、anti-Bax、anti-Bcl- 2、anti-caspase3、anti-p62、anti-Beclin-1、anti-LC3-Ⅱ、 anti-CD133、anti-Sox2、anti-Oct4、anti-β-actin,稀 释度 1∶1000,4℃),HRP标记的山羊抗兔 IgG二抗孵育一小时 (稀释度 1∶2000,37℃)。所有抗体均购自 Abcam(上海)公 司。添加 ECL试剂曝光显影蛋白条带 1min。β-actin为本 实验的内参蛋白。 1.6 CCK-8细胞增殖实验
【收稿日期】 2020-09-29 【修回日期】 2020-11-22 【基金项目】 陕西省西安市科技攻关项目[编号:2017113SF/YX007(1)] 【作者单位】 西安市中心医院呼吸与危重症医学科,陕西 西安
710003 【作者简介】 董玉(1973-),女,贵州贵阳人,主任医师,研究方向:
WDR5-0103_SDS_MedChemExpress
Inhibitors, Agonists, Screening LibrariesSafety Data Sheet Revision Date:Jun.-07-2017Print Date:Jun.-07-20171. PRODUCT AND COMPANY IDENTIFICATION1.1 Product identifierProduct name :WDR5-0103Catalog No. :HY-19347CAS No. :890190-22-41.2 Relevant identified uses of the substance or mixture and uses advised againstIdentified uses :Laboratory chemicals, manufacture of substances.1.3 Details of the supplier of the safety data sheetCompany:MedChemExpress USATel:609-228-6898Fax:609-228-5909E-mail:sales@1.4 Emergency telephone numberEmergency Phone #:609-228-68982. HAZARDS IDENTIFICATION2.1 Classification of the substance or mixtureNot a hazardous substance or mixture.2.2 GHS Label elements, including precautionary statementsNot a hazardous substance or mixture.2.3 Other hazardsNone.3. COMPOSITION/INFORMATION ON INGREDIENTS3.1 SubstancesSynonyms:WD–Repeat Protein 5–0103Formula:C21H25N3O4Molecular Weight:383.44CAS No. :890190-22-44. FIRST AID MEASURES4.1 Description of first aid measuresEye contactRemove any contact lenses, locate eye-wash station, and flush eyes immediately with large amounts of water. Separate eyelids with fingers to ensure adequate flushing. Promptly call a physician.Skin contactRinse skin thoroughly with large amounts of water. Remove contaminated clothing and shoes and call a physician.InhalationImmediately relocate self or casualty to fresh air. If breathing is difficult, give cardiopulmonary resuscitation (CPR). Avoid mouth-to-mouth resuscitation.IngestionWash out mouth with water; Do NOT induce vomiting; call a physician.4.2 Most important symptoms and effects, both acute and delayedThe most important known symptoms and effects are described in the labelling (see section 2.2).4.3 Indication of any immediate medical attention and special treatment neededTreat symptomatically.5. FIRE FIGHTING MEASURES5.1 Extinguishing mediaSuitable extinguishing mediaUse water spray, dry chemical, foam, and carbon dioxide fire extinguisher.5.2 Special hazards arising from the substance or mixtureDuring combustion, may emit irritant fumes.5.3 Advice for firefightersWear self-contained breathing apparatus and protective clothing.6. ACCIDENTAL RELEASE MEASURES6.1 Personal precautions, protective equipment and emergency proceduresUse full personal protective equipment. Avoid breathing vapors, mist, dust or gas. Ensure adequate ventilation. Evacuate personnel to safe areas.Refer to protective measures listed in sections 8.6.2 Environmental precautionsTry to prevent further leakage or spillage. Keep the product away from drains or water courses.6.3 Methods and materials for containment and cleaning upAbsorb solutions with finely-powdered liquid-binding material (diatomite, universal binders); Decontaminate surfaces and equipment by scrubbing with alcohol; Dispose of contaminated material according to Section 13.7. HANDLING AND STORAGE7.1 Precautions for safe handlingAvoid inhalation, contact with eyes and skin. Avoid dust and aerosol formation. Use only in areas with appropriate exhaust ventilation.7.2 Conditions for safe storage, including any incompatibilitiesKeep container tightly sealed in cool, well-ventilated area. Keep away from direct sunlight and sources of ignition.Recommended storage temperature:Powder-20°C 3 years4°C 2 yearsIn solvent-80°C 6 months-20°C 1 monthShipping at room temperature if less than 2 weeks.7.3 Specific end use(s)No data available.8. EXPOSURE CONTROLS/PERSONAL PROTECTION8.1 Control parametersComponents with workplace control parametersThis product contains no substances with occupational exposure limit values.8.2 Exposure controlsEngineering controlsEnsure adequate ventilation. Provide accessible safety shower and eye wash station.Personal protective equipmentEye protection Safety goggles with side-shields.Hand protection Protective gloves.Skin and body protection Impervious clothing.Respiratory protection Suitable respirator.Environmental exposure controls Keep the product away from drains, water courses or the soil. Cleanspillages in a safe way as soon as possible.9. PHYSICAL AND CHEMICAL PROPERTIES9.1 Information on basic physical and chemical propertiesAppearance Light yellow to yellow (Solid)Odor No data availableOdor threshold No data availablepH No data availableMelting/freezing point No data availableBoiling point/range No data availableFlash point No data availableEvaporation rate No data availableFlammability (solid, gas)No data availableUpper/lower flammability or explosive limits No data availableVapor pressure No data availableVapor density No data availableRelative density No data availableWater Solubility No data availablePartition coefficient No data availableAuto-ignition temperature No data availableDecomposition temperature No data availableViscosity No data availableExplosive properties No data availableOxidizing properties No data available9.2 Other safety informationNo data available.10. STABILITY AND REACTIVITY10.1 ReactivityNo data available.10.2 Chemical stabilityStable under recommended storage conditions.10.3 Possibility of hazardous reactionsNo data available.10.4 Conditions to avoidNo data available.10.5 Incompatible materialsStrong acids/alkalis, strong oxidising/reducing agents.10.6 Hazardous decomposition productsUnder fire conditions, may decompose and emit toxic fumes.Other decomposition products - no data available.11.TOXICOLOGICAL INFORMATION11.1 Information on toxicological effectsAcute toxicityClassified based on available data. For more details, see section 2Skin corrosion/irritationClassified based on available data. For more details, see section 2Serious eye damage/irritationClassified based on available data. For more details, see section 2Respiratory or skin sensitizationClassified based on available data. For more details, see section 2Germ cell mutagenicityClassified based on available data. For more details, see section 2CarcinogenicityIARC: No component of this product present at a level equal to or greater than 0.1% is identified as probable, possible or confirmed human carcinogen by IARC.ACGIH: No component of this product present at a level equal to or greater than 0.1% is identified as a potential or confirmed carcinogen by ACGIH.NTP: No component of this product present at a level equal to or greater than 0.1% is identified as a anticipated or confirmed carcinogen by NTP.OSHA: No component of this product present at a level equal to or greater than 0.1% is identified as a potential or confirmed carcinogen by OSHA.Reproductive toxicityClassified based on available data. For more details, see section 2Specific target organ toxicity - single exposureClassified based on available data. For more details, see section 2Specific target organ toxicity - repeated exposureClassified based on available data. For more details, see section 2Aspiration hazardClassified based on available data. For more details, see section 212. ECOLOGICAL INFORMATION12.1 ToxicityNo data available.12.2 Persistence and degradabilityNo data available.12.3 Bioaccumlative potentialNo data available.12.4 Mobility in soilNo data available.12.5 Results of PBT and vPvB assessmentPBT/vPvB assessment unavailable as chemical safety assessment not required or not conducted.12.6 Other adverse effectsNo data available.13. DISPOSAL CONSIDERATIONS13.1 Waste treatment methodsProductDispose substance in accordance with prevailing country, federal, state and local regulations.Contaminated packagingConduct recycling or disposal in accordance with prevailing country, federal, state and local regulations.14. TRANSPORT INFORMATIONDOT (US)This substance is considered to be non-hazardous for transport.IMDGThis substance is considered to be non-hazardous for transport.IATAThis substance is considered to be non-hazardous for transport.15. REGULATORY INFORMATIONSARA 302 Components:No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302.SARA 313 Components:This material does not contain any chemical components with known CAS numbers that exceed the threshold (De Minimis) reporting levels established by SARA Title III, Section 313.SARA 311/312 Hazards:No SARA Hazards.Massachusetts Right To Know Components:No components are subject to the Massachusetts Right to Know Act.Pennsylvania Right To Know Components:No components are subject to the Pennsylvania Right to Know Act.New Jersey Right To Know Components:No components are subject to the New Jersey Right to Know Act.California Prop. 65 Components:This product does not contain any chemicals known to State of California to cause cancer, birth defects, or anyother reproductive harm.16. OTHER INFORMATIONCopyright 2017 MedChemExpress. The above information is correct to the best of our present knowledge but does not purport to be all inclusive and should be used only as a guide. The product is for research use only and for experienced personnel. It must only be handled by suitably qualified experienced scientists in appropriately equipped and authorized facilities. The burden of safe use of this material rests entirely with the user. MedChemExpress disclaims all liability for any damage resulting from handling or from contact with this product.Caution: Product has not been fully validated for medical applications. For research use only.Tel: 609-228-6898 Fax: 609-228-5909 E-mail: tech@Address: 1 Deer Park Dr, Suite Q, Monmouth Junction, NJ 08852, USA。
大肠埃希氏菌鉴定试剂盒
大肠埃希氏菌干制生化鉴定试剂盒E.coli Dehydration Biochemical Identification Kit大肠埃希氏菌干制生化鉴定试剂盒组成:干制生化鉴定试剂:4种/盒×10 盒;0.5麦氏浊度比浊管:1支;配套试剂:Kovacs氏靛基质试剂1瓶、甲基红试剂1瓶、V-P甲、乙液试剂各1瓶; 使用说明书:1份实验操作步骤: 1. 从铝箔袋中取出试剂盒,打开盒盖,在试剂盒的长条槽中加入0.5mL无菌水;2. 用接种环从平板上挑取新鲜培养的单个纯菌落至适量无菌水中,制成0.5麦氏浊度的均一菌悬液;3. 接种菌悬液分别至试剂盒的4个圆孔中,每孔接种量0.2mL,盖上盒盖,36℃±1℃培养24h。
结果判定:保存条件和保质期:室温避光保存1年。
其他相关试剂盒:名称用途及用法大肠埃希氏菌干制生化鉴定试剂盒E.coli Dehydration Biochemical Identification Kit 用于大肠杆菌的IMVC 生化系统鉴定(GB4789.38-2012),包括蛋白胨水、MR、VP和西蒙氏枸橼酸盐共 4 种生化鉴定试验和配套试剂(靛基质、甲基红、VP甲乙液)阪崎肠杆菌干制生化鉴定试剂盒Enterobacter sakazakii Dehydration Biochemical Identification Kit 用于阪崎肠杆菌的生化鉴定(GB4789.40-2010),包括氨基酸对照、赖氨酸脱羧酶、鸟氨酸脱羧酶、精氨酸双水解酶、西蒙氏柠檬酸盐、D-山梨醇、L-鼠李糖、D-蜜二糖、D-蔗糖和苦杏仁苷共10种生化鉴定试验和配套试剂(无菌石蜡)志贺氏菌干制生化鉴定试剂盒Shigella Dehydration Biochemical Identification Kit 用于志贺氏菌的生化鉴定(GB4789.5-2012),包括氨基酸对照、赖氨酸脱羧酶、鸟氨酸脱羧酶、靛基质、尿素、水杨苷、七叶苷、甘露醇、棉子糖、ONPG、甘油、葡萄糖铵、西蒙氏柠檬酸盐、粘液酸对照、粘液酸、三糖铁、半固体共17 种生化鉴定试验和配套试剂(无菌石蜡、靛基质)单增李斯特氏菌干制生化鉴定试剂盒Listeria Monocytogenes Dehydration Biochemical Identification Kit 用于单增李斯特氏菌的生化鉴定(GB4789.30-2010),包括MR、VP、葡萄糖、麦芽糖、鼠李糖、木糖、甘露醇、七叶苷共8 种生化鉴定试验和配套试剂(糖发酵添加剂、甲基红、VP 甲乙液)沙门氏菌干制生化鉴定试剂盒Salmonella Dehydration Biochemical Identification Kit 用于沙门氏菌的生化鉴定(GB4789.4-2010),包括氨基酸对照、赖氨酸脱羧酶、氰化钾对照、氰化钾、靛基质、尿素、甘露醇、山梨醇、ONPG、三糖铁共10 种生化鉴定试验和配套试剂(无菌石蜡、靛基质)大肠埃希氏菌O157:H7干制生化鉴定试剂盒E.coli O157:H7 Dehydration Biochemical Identification Kit 用于大肠埃希氏菌O157:H7/NM的生化鉴定(GB/T4789.36-2008),包括氨基酸对照、赖氨酸脱羧酶、鸟氨酸脱羧酶、MR、VP、靛基质、西蒙氏柠檬酸盐、纤维二糖、棉子糖、三糖铁、半固体共11种生化鉴定试验和配套试剂(无菌石蜡、靛基质、甲基红、VP甲乙液)蜡样芽孢杆菌干制生化鉴定试剂盒Bacillus cereus Dehydration Biochemical Identification Kit 用于蜡样芽孢杆菌的生化鉴定(GB 4789.14-2014),包括葡萄糖、VP、硝酸盐、明胶、动力培养基(蜡样)、甘露醇、西蒙氏柠檬酸盐、溶菌酶肉汤共8种生化鉴定试验和配套试剂(无菌石蜡、硝酸盐还原甲乙液、VP 甲乙液)副溶血性弧菌干制生化鉴定试剂盒Vibrio parahaemolyticus Dehydration Biochemical 用于副溶血性弧菌的生化鉴定(GB 4789.7-2013),包括无盐胨水、6% 盐胨水、8% 盐胨水、10% 盐胨水、葡萄糖、蔗糖、乳糖、Identification Kit 甘露醇、氨基酸对照、赖氨酸脱羧酶、鸟氨酸脱羧酶、精氨酸双水解酶、VP、ONPG、3%NaCl三糖铁、3%NaCl半固体共16种生化鉴定试验和配套试剂(无菌石蜡、糖发酵添加剂、VP甲乙液)致泻大肠埃希氏菌干制生化鉴定试剂盒Diarrheogenic E.coli Dehydration Biochemical Identification Kit 用于致泻大肠埃希氏菌的生化鉴定(GB/T4789.6- 2003),包括氨基酸对照、赖氨酸脱羧酶、氰化钾对照、氰化钾、靛基质、尿素、三糖铁、半固体共8种生化鉴定试验和配套试剂(无菌石蜡、靛基质)小肠结肠炎耶尔森氏菌干制生化鉴定试剂盒Yersinia enterocolitica Dehydration Biochemical Identification Kit 用于小肠结肠炎耶尔森氏菌的生化鉴定(GB/T 4789.8-2008),包括氨基酸对照、鸟氨酸脱羧酶、VP、蔗糖、鼠李糖、棉子糖、甘露醇、山梨醇、尿素、半固体共10 种生化鉴定试验和配套试剂(无菌石蜡、糖发酵添加剂、VP 甲乙液)。
致病疫霉菌效应蛋白Pi05440毒性功能验证及寄主候选靶标筛选
核农学报2024,38(3):0434~0442Journal of Nuclear Agricultural Sciences致病疫霉菌效应蛋白Pi05440毒性功能验证及寄主候选靶标筛选张蝶陈胜男赵迪王荟洁王洪洋 *刘晶 *(云南师范大学,云南省马铃薯生物学重点实验室,云南昆明650500)摘要:致病疫霉菌(Phytophthora infestans)侵染时会分泌大量效应蛋白进入寄主细胞,通过操纵寄主靶标抑制植物免疫反应。
为研究致病疫霉菌效应蛋白Pi05440的功能,本研究重点分析了Pi05440的蛋白特征、毒性功能及鉴定其寄主靶标;利用生物信息学数据库,预测Pi05440的保守结构域和信号肽。
构建pRI101-GFP-Pi05440表达载体用于Pi05440的亚细胞定位和毒性功能分析;同时,利用酵母双杂交技术对Pi05440的寄主靶标蛋白进行了筛选和鉴定。
结果表明,Pi05440基因全长969 bp,编码322个氨基酸。
结构预测结果显示Pi05440含有3个典型的KAZAL功能域。
亚细胞定位结果表明Pi05440定位在质膜和细胞间隙。
在本氏烟中瞬时表达该基因显著促进致病疫霉菌扩展。
通过酵母双杂交筛选,初步鉴定到3个Pi05440的候选靶标蛋白,分别为马铃薯过氧化氢酶12、马铃薯几丁质酶以及马铃薯MYB-like A蛋白。
本研究为探究致病疫霉菌效应蛋白Pi05440及其靶标蛋白如何调控植物免疫提供了重要线索。
关键词:致病疫霉菌;效应蛋白;亚细胞定位;酵母双杂交;靶标蛋白DOI:10.11869/j.issn.1000‑8551.2024.03.0434马铃薯(Solanum tuberosum)富含碳水化合物、维生素、矿物质和抗氧化物质等营养成分,对人类健康和可持续农业发展至关重要[1]。
然而,马铃薯生产过程中会面临许多病害的威胁,其中最为严重的是由致病疫霉菌(Phytophthora infestans)引起的晚疫病。
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=====================================================================Acq. Operator : Yang Qian(LCMS-02) Seq. Line : 50
Acq. Instrument : HY-LCMS-02 Location : P2-E-08Injection Date : 11/30/2015 1:44:34 PM Inj : 1
Inj Volume : 3.000 µl
Acq. Method : D:\AGLIENT 1260\DATA\20151130\20151130 2015-11-30 09-46-52\100-1000MS+3MIN- 1.5_(0.02%FA)-BD.M
Last changed : 11/30/2015 9:46:52 AM by Yang Qian(LCMS-02)
Analysis Method : D:\AGLIENT 1260\DATA\20151127-1\20151127-1 2015-11-29 08-53-13\BL100-1000MS +7MIN_1.5(0.02%FA).M (Sequence Method)
Last changed : 11/30/2015 3:26:48 PM by Yang Qian(LCMS-02) (modified after loading)
Method Info : Postive,MS:100-1000,Column ID:A-RP-85,50℃
Catalog No : HY-19347 Batch#18742 A-RP-108
Additional Info : Peak(s) manually integrated
min
0.5
1
1.52
2.53mAU 0
200400
600800100012001400 DAD1 C, Sig=254,4 Ref=off (D:\AGLIENT 1260\DATA\20151130\20151130 2015-11-30 09-46-52\BIZ2015-N30-WJ4.D)
1.470
1.563
1.650
1.851
1.967
2.116
===================================================================== Area Percent Report =====================================================================
Sorted By : Signal Multiplier : 1.0000Dilution : 1.0000
Do not use Multiplier & Dilution Factor with ISTDs
Signal 1: DAD1 C, Sig=254,4 Ref=off
Peak RetTime Type Width Area Height Area # [min] [min] [mAU*s] [mAU] %
----|-------|----|-------|----------|----------|--------| 1 1.470 MM 0.0451 12.23104 4.52278 0.1950 2 1.563 MF 0.0244 8.79659 5.99785 0.1403 3 1.650 FM 0.0678 6228.02588 1530.24463 99.3038 4 1.851 MM 0.0413 10.21519 4.11880 0.1629 5 1.967 MM 0.0384 5.14159 2.23329 0.0820 6 2.116 MM 0.0604 7.27861 2.00845 0.1161
Totals : 6271.68889 1549.12579
===================================================================== *** End of Report ***
=====================================================================Acq. Operator : Yang Qian(LCMS-02) Seq. Line : 50
Acq. Instrument : HY-LCMS-02 Location : P2-E-08Injection Date : 11/30/2015 1:44:34 PM Inj : 1
Inj Volume : 3.000 µl
Acq. Method : D:\AGLIENT 1260\DATA\20151130\20151130 2015-11-30 09-46-52\100-1000MS+3MIN- 1.5_(0.02%FA)-BD.M
Last changed : 11/30/2015 9:46:52 AM by Yang Qian(LCMS-02)
Analysis Method : D:\AGLIENT 1260\DATA\20151127-1\20151127-1 2015-11-29 08-53-13\BL100-1000MS +7MIN_1.5(0.02%FA).M (Sequence Method)
Last changed : 11/30/2015 3:27:29 PM by Yang Qian(LCMS-02) (modified after loading)
Method Info : Postive,MS:100-1000,Column ID:A-RP-85,50℃
Catalog No : HY-19347 Batch#18742 A-RP-108
Additional Info : Peak(s) manually integrated
min
0.5
1
1.5
2
2.5
3
100000
200000300000400000500000600000700000800000900000 MSD1 TIC, MS File (D:\AGLIENT 1260\DATA\20151130\20151130 2015-11-30 09-46-52\BIZ2015-N30-WJ4.D) ES-API, Pos, Scan
1.666
MS Signal: MSD1 TIC, MS File, ES-API, Pos, Scan, Frag: 50 Spectra averaged over upper half of peaks. Noise Cutoff: 1000 counts.
Reportable Ion Abundance: > 10%.
Retention Mol. Weight Time (MS) MS Area or Ion
1.666 6315559 385.25 I 384.20 I
m/z
100
200
300
400
500
600
700
800
900
20406080100*MSD1 SPC, time=1.635:1.726 of D:\AGLIENT 1260\DATA\20151130\20151130 2015-11-30 09-46-52\BIZ2015-N30-WJ4.D ES-API, Max: 548128
385.3 384.2
*** End of Report ***。