雷帕霉素和3-甲基腺嘌呤对帕金森病小鼠运动行为及黑质自噬相关蛋白LC3的影响解析

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average 753.2±1
106.7)cm掷(4669.31969.1)cm.P<0.01)and
speed((19.29±2.35)cm/s猫(16.47±3.01)cm/s,p<0.05;(18.71±2.71)cm/s t培(15.80±2.50) cm/s,P<0.01),while 3-MA aggravated behavioral deftcits of mice in pole test(19.921 1.61 s傩17.93±1.11 s,P<O.05),andbothtotal activitydistance((3879.7±575.0)cm街(4669.3±969.1)cm,P<0.05)and aver.
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‘961・
・基础研究・
雷帕霉素和3一甲基腺嘌呤对帕金森病小鼠 运动行为及黑质自噬相关蛋白LC3的影响
吴忧张荣博梁顺利 朱悦红徐彬 310005杭州。浙江中医药大学附属Fra Baidu bibliotek二医院神经内科 通信作者:徐彬,Email:xubin2008.10ve@163.corn
MPTP注射的同时分别予雷帕霉素、3-MA腹腔注射。各组小鼠在最后1次MPTP或生理盐水注射后
1 d、7 d、14
d分别进行行为学测试,最后1次行为学测试后处死小鼠取中脑黑质脑组织,Western
Blot
检测自噬相关蛋白LC3的表达。结果与MPTP模型组比较,雷帕霉素组小鼠的爬杆时间明显缩短 [(14.89±1.14)s铘(16.24±1.39)S,P<0.05;(15.18±1.36)S伽(17.93±1.11)S,P<0.01],悬挂分值增加 [(1.7±0.5)分嬲(1.2+0.4)分,P<0.05;(1.5±0.5)分/)S(1.1±0.3)分,P<O.05],旷场实验的总距离 [(5875.3+1148.9)am船(5061.5±773.1)cm,P<0.05;(5753.2±1106.7)cm掷(4669.3土969.1)cm,P<
DOI:10.3760/cma.J.issn.1674-6554.2016.1
1.001
【摘要】
目的探讨自噬诱导剂雷帕霉素和自噬抑制剂3-甲基腺嘌呤(3-MA)对C57BL/6帕金
森病(PD)模型小鼠运动行为及自噬相关蛋白LC3的影响。方法取40只C57BL/6雄性小鼠随机 分为实验组和正常对照组.实验组又分为MPTP模型组、雷帕霉素组、3-MA组。每组10只。实验组采 用MPTP腹腔注射建立PD模型。正常对照组给予等量生理盐水腹腔注射。雷帕霉素组和3-MA组在
0.01]及平均速度[(19.29±2.35)cnVs V5(16.47±3.01)cm/s,P<O.05;(18.7l±2.71)cm/s堋(15.80+ 2.50)cm/s,P<O.01]均增加,LC3.U蛋白表达增加,而3-MA组小鼠的爬杆时间延长[(19.92±1.61)S 傩(17.93±1.11)S,P<0.05],旷场实验总距离[(3879.7±575.0)cm堋(4669.3士969.1)am),P<0.05]及
es.
control group and experimental groups which
consist of MPlP
group,with 10 in each group.Mice in experimental groups received intraperitoneal tablish PD
the lth,7th and 14th day after the last injection.After the last iniection.
mice were sacrificed and sections of midbrain nigra were gained for the detection of expression of autophagy specificity protein LC3 by Western Blot.Results
・962。
主堡鱼塑匿堂皇堕型堂盘查!Q!垒生!!旦筮堑鲞箜!!塑g!垫』旦!!型丛鲤鱼曼趔!!尘:盟!!!坐堕!Q!垒:!堂:堑:堕!:!!
1.39)S,P<0.05;(15.18+1.36)8 VS(17.93±1.11s),P<0.01),traction test((1.7±0.5)埘(1.2±0.4).P< O.05;(1.5±0.5)销(1.1+0.3),P<0.05)and open field test which contained total activity distance((5 875.3 ±1148.9)cm傩(5061.5土773.1)cm,P<0.05;(5
平均速度[(13.34±1.87)cm/sff¥(15。80±2.50)cm/s,P<0.05]减少,LC3.1I蛋白表达减少。结论自 噬诱导剂雷帕霉素可改善PD小鼠的行为学症状。增加黑质自噬相关蛋白LC3的表达。而自噬抑制剂 3-MA则会加重PD小鼠的行为学障碍,减少黑质LC3的表达,调节自噬的药物可能是PD防治的新方 向。
on an
autophagy inducer and 3. LC3 in
motor
behavior and autophagy related protein
disease(PD).Methods
40 C57BL/6 male mice were randomly divided into model group.rapamycin group and 3-MA with MPTP to
injection
models.and
mice in control group received intraperitoneal
injection injection
with the same amount of saline with rapamycin and mice in 3.
solution for l week.Mice in
组10只。
ycin,roTOR)信号通路诱导细胞产生自噬”剖。3一甲 基腺嘌呤(3-Methyladenine,3-MA)则可特异地阻断 自噬泡与溶酶体的融合。是一种常见的自噬抑制 剂[5]。本实验通过腹腔注射1.甲基一4.苯基一1,2,3,
6.四氢吡啶(1.methyl一4.phenyl.1,2,3,6-tetrahydro—
age speed((13.34+1.87)cm/s VS(15.80±2.50)cm/s.P<0.05)in
duce the expression of LC3.II.Conclusion
open
field
test were
decreased.The l'eSults
re.
of Western Blot confirmed that rapamycin could increase the expression of LC3.II.however 3-MA could This study
2.PD模型建立16-7]:实验组小鼠给予MPTP腹 腔注射30
Fund programs:Medical Technology Planning of Educational Commission of
Project
of
Zhejiang
Province of
China(201471632);
Zhejiang
Province of China(Y201431457):Traditional Chinese Medi.
rapamycin group received
injection
Oil
intraperitoneal
salne
MA group received intraperitoneal havior detections were carried out
with 3-MA at the
time when MPTP was injected.Animal be.
can
nigra.nUS
it
can
be spec.
regulate autophagy may be potential treatment protocols for PD. 3-MA;Parkinson’s disease;LC3; Autophagy
【Key words】
Projeet
Rapamycin;
mice
Wu You,Zhang Rongbo,Liang Shu,12i,Zhu Yuehong,Xu Bin
Second
of Neurology,the 310005,China(Wu y,Zhang
Department
Affiliated
Hospital
of Zhejiang
Chinese
Medical University,Hangzhou
confirmed
that rapamycin could alleviate behavioral
symptoms of PD model mice and increase the level of LC3 in midbrain nigra.while 3.MA could exacerbate behavioral symptoms in PD model mice and decrease the level of LC3 in midbrain ulated that drags which
target of rapam—
光照和12 h黑暗交替,动物可自由摄食饮水。上述 动物实验设施、饲料等均由浙江中医药大学动物实 验中心提供,实验动物使用许可证号:SYXK(浙)
2013—0184。
二、方法 1.动物分组:将小鼠随机分为实验组和正常对 照组,实验组又分为3组,分别为MPTP模型组(模 型组)、雷帕霉素组、3.MA组,每组10只,正常对照
cal Technology Planning
Project
of
Zhejiang
Province of
China(Excellent
Youth
Foundation)(2015ZQ017)
帕金森病(Parkinson’S disease,PD)是中老年人 最常见神经系统变性疾病之一。已严重威胁到人类 健康。路易氏小体(Lewy bodies)中异常聚集的仅一 突触核蛋白(0【一Synuclein,0【一Syn)与PD的发生发展 密切相关。细胞自噬功能障碍被认为是导致d.Syn 清除障碍、异常蛋白聚集以及寡聚体形成的重要因 素,因此具有调节细胞自噬功能的药物可能是PD 药物治疗的有效靶点[1’2]。雷帕霉素可通过抑制哺 乳动物雷帕霉素靶蛋白(mammalian
prove
Compared with MPTP model group.rapamycin could im. of mice in pole
tlle general condition and behavioral
manifestation
test((14.89±1.14)S哪(16.24±
万方数据
【关键词】雷帕霉素;3-甲基腺嘌呤;帕金森病;LC3;
省中医药科技计划项目(青年人才基金项目)(2015ZQ017)
自噬
基金项目:浙江省医药卫生科技计划项目(201471632);浙江省教育厅项目(Y201431457):浙江
Effects of rapamycin and
3-MA
on
motor behavior and autophagy related protein LC3 in PD model
RB,Liang SL,Zhu YH,Xu B)
Corresponding autho’:池成n,Email:xubin2008.10ve@163.corn
【Abstract】0bjective adenine(3-MA)which is an
C57BL/6 mice of Parkinson's To investigate the effects of rapamycin which is autophagy inhibitor
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