Document Detail


MicroRNA-200a and -200b Mediated Hepatocellular Carcinoma Cell Migration Through the Epithelial to Mesenchymal Transition Markers.
MedLine Citation:
PMID:  22868917     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: MicroRNAs (miRNAs) play an essential role in mediating gene expression in both normal and malignant cells. However, little is known about specific miRNAs during the development of hepatocellular carcinoma (HCC) from well-differentiated to poorly differentiated cells. METHODS: We performed miRNA array analysis of three different HCC cell lines: HepG2, HepJ5, and skHep-1. The expression patterns of miR-200 family members were confirmed by real-time polymerase chain reaction (PCR). We overexpressed miR-200 family members by using a lentivirus system and selected for stably transduced cells using antibiotics. The migration ability of the cells was tested using the Transwell migration assay system. RESULTS: Our miRNA array and real-time PCR results indicated a decrease in the expression of miR-200 family members in poorly differentiated skHep-1 cells compared with well-differentiated HepG2 cells. We overexpressed miR-200a and miR-200b in both HepJ5 and skHep-1 cells and found that the overexpression of the miR-200 family members did not influence proliferation, although migration was decreased in these cells. We found that overexpression of miR-200 family members led to an upregulation of E-cadherin expression in both HepJ5 and skHep-1 cells. Furthermore, we silenced E-cadherin expression by shRNA in miR200a-HepJ5 cells and found that the migratory ability of these cells was enhanced upon the decrease in E-cadherin expression. CONCLUSIONS: Members of the miR-200 family (miR-200a and miR-200b) play important roles in HCC migration by regulating E-cadherin expression.
Authors:
Chin-Sheng Hung; Hui-Hsiung Liu; Jun-Jen Liu; Chi-Tai Yeh; Tung-Cheng Chang; Chih-Hsiung Wu; Yuan-Soon Ho; Po-Li Wei; Yu-Jia Chang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-7
Journal Detail:
Title:  Annals of surgical oncology     Volume:  -     ISSN:  1534-4681     ISO Abbreviation:  Ann. Surg. Oncol.     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9420840     Medline TA:  Ann Surg Oncol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
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