基因在染色体上的定位及其功能分析

合集下载
  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
in gastric cancer(T)and normal gastric mucosa(C),and their chromosome 10cafion was characterized by bioinformatics.A total of
270 genes were found to have a difference in expression levels of more than eight times.Of them 157 were up—regulated(Signal
functions,it was found that most(67 genes,24.8%)belonged to the enzymes and their regulators groups.The next group was the
signal transduction genes group(43 genes,15.9%).The rest of the top three groups were nucleic acid binding genes(17,6.3%),
19.The cancer seemed to be sporadically distributed across the genome,but most were found on chromosomes 1,11 and
five
groups associated genes abnormality were important genes for further study on gastric cancer.
transporter genes(15,5.5%),and protein binding genes(12,4.4%).These made up 56.9%of aU the differentially expressed genes.
There were also 50 genes of unknown function(18.5%).Therefore it was concluded that differentially expressed genes in gastric
pressed genes(26 genes,or 9.8%),followed by chromosomes 11 and 19(both 24 genes,or 9.1%).These genes were also more
likely to be on the short-arm of the chromosome(q),which had 173(65%).When these genes were classified according to their
LIU Xiang—Lin Zh巧iang Cancer Research Institute,Hangzhou 3 10022,China
Abstract:Using Affymetrix U133A oligonucleotide microarrays,screening was done for genes that were differentially expressed
Log Ratio【SLR】≥3),and 113 were down-regulated(SLR一<一3).Except for,four genes with unknown localization,a vast majority
of the genes were sporadically distributed over every chromosome.However’chromosome 1 confined the most differentially ex.
遗传学报Acta Genetica Sinica,May 2006,33(5):397-404
wk.baidu.com
ISSN 0379—4172
Function and Chromosome Location of Differentially Ex· pressed Genes in Gastric Cancer
YU Chuan—Ding①,XU Shen.Hua,MOU Hang—Zhou,JIANG Zhi—Ming,ZHU Chi—Hong,
Key words:gastric cancer;gene expression profile;chromosomal localization;molecular function
More and more cDNA microarray methods are now being applied to the study of gene expression. However,up to now there are few reports on studying the chromosomal localization of differential ex— pressed genes.In the present paper,the gene chip technique has been used to analyze differential gene expression patterns between gastric carcinoma and normal tissue of the gastric mucosa.Bioinformatics was used to categorize the genes on the basis of their chromosomal location and function,in order to ex- plore tumor--associated gene·-cluster and its functions in the process of gastric cancer formation and devel— opment.These studies will be helpful in understand— ing the mechanism of carcinogenesis at the molecular level.In addition.this research will provide a poten. tial molecular markers and target genes for the clini—
相关文档
最新文档