单位:[1]Huazhong Univ Sci & Technol,Tongji Med Coll,Tongji Hosp,Dept Urol,Wuhan 430074,Peoples R China外科学系华中科技大学同济医学院附属同济医院泌尿外科[2]Univ Calif San Francisco, Dept Urol, San Francisco, CA USA[3]Univ Calif San Francisco, Helen Diller Comprehens Canc Ctr, San Francisco, CA 94143 USA[4]Peoples Liberat Army Gen Hosp, Mil Postgrad Med Coll, Dept Urol, Beijing, Peoples R China[5]BGI Shenzhen, Shenzhen, Peoples R China
Background: Long noncoding RNAs (lncRNAs) are an important class of pervasive genes involved in a variety of biological functions. They are aberrantly expressed in many types of cancers. In this study, we described lncRNAs profiles in 6 pairs of human renal clear cell carcinoma (RCCC) and the corresponding adjacent nontumorous tissues (NT) by microarray. Methodology/Principal Findings: With abundant and varied probes accounting 33,045 LncRNAs in our microarray, the number of lncRNAs that expressed at a certain level could be detected is 17157. From the data we found there were thousands of lncRNAs that differentially expressed (>= 2 fold-change) in RCCC tissues compared with NT and 916 lncRNAs differentially expressed in five or more of six RCCC samples. Compared with NT, many lncRNAs were significantly up-regulated or down-regulated in RCCC. Our data showed that down-regulated lncRNAs were more common than up-regulated ones. ENST00000456816, X91348, BC029135, NR_024418 were evaluated by qPCR in sixty-three pairs of RCCC and NT samples. The four lncRNAs were aberrantly expressed in RCCC compared with matched histologically normal renal tissues. Conclusions/Significance: Our study is the first one to determine genome-wide lncRNAs expression patterns in RCCC by microarray. The results displayed that clusters of lncRNAs were aberrantly expressed in RCCC compared with NT samples, which revealed that lncRNAs differentially expressed in tumor tissues and normal tissues may exert a partial or key role in tumor development. Taken together, this study may provide potential targets for future treatment of RCCC and novel insights into cancer biology.
基金:
National Natural Science Foundation of China [31072238, 31172441, 81170650]