Document Detail


Association between Epstein-Barr virus infection and chemoresistance to docetaxel in gastric carcinoma.
MedLine Citation:
PMID:  21626300     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Epstein-Barr virus (EBV) is associated with human cancers such as nasopharyngeal carcinoma, Burkitt's lymphoma, Hodgkin's disease, and gastric carcinoma (GC). EBV is associated with about 10% of all GC cases globally. EBV-associated GC has distinct features from EBV-negative GC. However, it is still unclear if EBV infection has any effect on GC chemoresistance. Cell proliferation assay, cell cycle analysis, and active caspase Western blot revealed that the EBV-positive GC cell line (AGS-EBV) showed chemoresistance to docetaxel compared to the EBV-negative GC cell line (AGS). Docetaxel treatment increased expression of Bax similarly in AGS and AGS-EBV cell lines. However, Bcl-2 induction was markedly higher in AGS-EBV cells, after docetaxel treatment. Although docetaxel increased the expression of p53 to a similar extent in both cell lines, induction of p21 in AGS-EBV cells was lower than in AGS cells. Furthermore, expression of survivin was higher in AGS-EBV cells than in AGS cells following docetaxel treatment as well as at basal state. EBVlytic gene expression was induced by docetaxel treatment in AGS-EBV cells. The results suggest that EBV infection and lytic induction confers chemoresistance to GC, possibly by regulating cellular and EBV latent and lytic gene expression.
Authors:
Hee Jong Shin; Do Nyun Kim; Suk Kyeong Lee
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2011-05-27
Journal Detail:
Title:  Molecules and cells     Volume:  32     ISSN:  0219-1032     ISO Abbreviation:  Mol. Cells     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-09-02     Completed Date:  2011-12-30     Revised Date:  2014-02-24    
Medline Journal Info:
Nlm Unique ID:  9610936     Medline TA:  Mol Cells     Country:  United States    
Other Details:
Languages:  eng     Pagination:  173-9     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Carcinoma / drug therapy*,  pathology,  virology
Cell Line, Transformed
Cyclin-Dependent Kinase Inhibitor p21 / genetics,  metabolism
Drug Resistance, Neoplasm
Epstein-Barr Virus Infections / drug therapy*,  pathology,  virology
Gene Expression Regulation, Viral / drug effects
Herpesvirus 4, Human / drug effects,  physiology*
Humans
Inhibitor of Apoptosis Proteins / genetics,  metabolism
Proto-Oncogene Proteins c-bcl-2 / genetics,  metabolism
Stomach Neoplasms / drug therapy*,  pathology,  virology
Taxoids / pharmacology,  therapeutic use*
Chemical
Reg. No./Substance:
0/BIRC5 protein, human; 0/Cyclin-Dependent Kinase Inhibitor p21; 0/Inhibitor of Apoptosis Proteins; 0/Proto-Oncogene Proteins c-bcl-2; 0/Taxoids; 15H5577CQD/docetaxel
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