期刊
PATHOLOGY INTERNATIONAL
卷 60, 期 5, 页码 351-357出版社
WILEY
DOI: 10.1111/j.1440-1827.2010.02526.x
关键词
hepatocellular carcinoma; microRNA; miR-638; miR-92a; plasma
类别
资金
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- Ministry of Health, Labour and Welfare of Japan
- Japan Health Sciences Foundation
- Yamaguchi Endocrine Research Association
- MEXT
MicroRNAs (miRNAs) belong to a class of the endogenously expressed non-coding small RNAs which primarily function as gene regulators. Growing evidence suggests that miRNAs have a significant role in tumor development and may constitute robust biomarkers for cancer diagnosis and prognosis. The miR-17-92 cluster especially is markedly overexpressed in several cancers, and is associated with the cancer development and progression. In this study, we have demonstrated that miR-92a is highly expressed in hepatocellular carcinoma (HCC). In addition, the proliferation of HCC-derived cell lines was enhanced by miR-92a and inhibited by the anti-miR-92a antagomir. On the other hand, we have found that the relative amount of miR-92a in the plasmas from HCC patients is decreased compared with that from the healthy donors. Interestingly, the amount of miR-92a was elevated after surgical treatment. Thus, although the physiological significance of the decrease of miR-92a in plasma is still unknown, deregulation of miR-92 expression in cells and plasma should be implicated in the development of HCC.
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