Document Detail


A potential oncogenic role of the commonly observed E2F5 overexpression in hepatocellular carcinoma.
MedLine Citation:
PMID:  21274376     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
AIM: To explore the expression pattern of E2F5 in primary hepatocellular carcinomas (HCCs) and elucidate the roles of E2F5 in hepatocarcinogenesis.
METHODS: E2F5 expression was analyzed in 120 primary HCCs and 29 normal liver tissues by immunohistochemistry analysis. E2F5-small interfering RNA was transfected into HepG2, an E2F5-overexpressed HCC cell line. After E2F5 knockdown, cell growth capacity and migrating potential were examined.
RESULTS: E2F5 was significantly overexpressed in primary HCCs compared with normal liver tissues (P = 0.008). The E2F5-silenced cells showed significantly reduced proliferation (P = 0.004). On the colony formation and soft agar assays, the number of colonies was significantly reduced in E2F5-silenced cells (P = 0.004 and P = 0.009, respectively). E2F5 knockdown resulted in the accumulation of G0/G1 phase cells and a reduction of S phase cells. The number of migrating/invading cells was also reduced after E2F5 knockdown (P = 0.021).
CONCLUSION: To our knowledge, this is the first evidence that E2F5 is commonly overexpressed in primary HCC and that E2F5 knockdown significantly repressed the growth of HCC cells.
Authors:
Yuzhu Jiang; Seon-Hee Yim; Hai-Dong Xu; Seung-Hyun Jung; So Young Yang; Hae-Jin Hu; Chan-Kwon Jung; Yeun-Jun Chung
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  World journal of gastroenterology : WJG     Volume:  17     ISSN:  1007-9327     ISO Abbreviation:  World J. Gastroenterol.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-01-28     Completed Date:  2011-07-18     Revised Date:  2011-07-21    
Medline Journal Info:
Nlm Unique ID:  100883448     Medline TA:  World J Gastroenterol     Country:  China    
Other Details:
Languages:  eng     Pagination:  470-7     Citation Subset:  IM    
Affiliation:
Integrated Research Center for Genome Polymorphism and Department of Microbiology, School of Medicine, The Catholic University of Korea, Socho-gu, Seoul, South Korea.
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MeSH Terms
Descriptor/Qualifier:
Carcinoma, Hepatocellular / genetics*,  metabolism*,  pathology
Cell Cycle
Cell Line, Tumor
Cell Movement
Cell Proliferation
E2F5 Transcription Factor / genetics,  metabolism*
Gene Knockdown Techniques
Humans
Liver Neoplasms / genetics*,  metabolism*,  pathology
Microarray Analysis
Neoplasm Invasiveness
Oncogenes*
RNA, Small Interfering / genetics,  metabolism
Chemical
Reg. No./Substance:
0/E2F5 Transcription Factor; 0/E2F5 protein, human; 0/RNA, Small Interfering
Comments/Corrections

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