The preliminary analysis of peripheral blood microRNA expression profile of gastric cancer
10.3760/cma.j.issn.0254-1432.2012.04.002
- VernacularTitle:胃癌外周血微小核糖核酸表达谱的初步分析
- Author:
Wei GU
;
Meijie HU
;
Ying SUN
;
Ji WANG
;
Xiaoying HU
;
Jin MA
- Publication Type:Journal Article
- Keywords:
MicroRNAs;
Stomach neoplasms;
Oligonucleotide array sequence analysis;
Gene expression;
Polvmerase chain rcaction
- From:
Chinese Journal of Digestion
2012;32(4):222-225
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the peripheral blood microRNA (miRNA) expression of patients with gastric cancer,and to establish specific peripheral blood miRNA expression profile of gastric cancer,which would provide the evidencc for investigating the role of miRNA in the genesis and development of gastric cancer and looking for new molecular markers of gastric cancer.MethodsA total of 6 gastric cancer patients and 6 healthy volunteers were selected.The totat RNA of peripheral blood was extracted for miRNA expression profile examination and hioinformation analysis. The results of microarray were verified by real-time PCR. The online miRNA target gene pr(e)diction software was used to predict and screen miRNA differentially expressed target genes. Results Compared with control group,there were 54 differentially expressed miRNA in gastric cancer group,of which the expression of 35 miRNA (miRNA-504,mi RNA-183,miRNA- 938,miRNA-1285,miRNA- 576-3p,miRNA-663,etc) were up-regulated and 19 miRNA (miRNA-433,miRNA-193b,miRNA-329,miRNA 409-3p,miRNA 154,el(e)) were down-regulated.The results of real-time PCR indicated that there was a good consistency between PCR verificd results and microarray results in 2 up-regulated miRNA (miRNA 504 and miRNA-183) and 2 down-regulated miRNA (miRNA-443 and miRNA- 193b).ConclusionThere is specific peripheral blood miRNA expression profile of patients with gastric cancer,and these differentially cxpressed miRNA will likely become new diagnostic biomarkers of gastric cancer.
