Document Detail

The role of peroxiredoxin V in (-)-epigallocatechin 3-gallate-induced multiple myeloma cell death.
MedLine Citation:
PMID:  22329198     Owner:  NLM     Status:  In-Process    
(-)-Epigallocatechin 3-gallate (EGCG) is a potent antioxidant polyphenol in green tea that acts as an anticancer agent via both direct and indirect pathways. Although the relationship between EGCG's anticancer effects and its antioxidant activity is not fully understood, it is known that EGCG stimulates production of reactive oxygen species (ROS), which induce oxidative stress leading to cell death. In IM9 multiple myeloma cells, EGCG acted in a dose- and time-dependent manner to induce apoptotic cell death. Among the antioxidant enzymes expressed in IM9 cells, levels of peroxiredoxin V (PrdxV) were selectively and significantly reduced by EGCG. Moreover, the ROS scavenger NAC completely inhibited EGCG-induced apoptosis and PrdxV reduction, while overexpression of PrdxV, but not a Prdx(VC48S) mutant, protected IM9 cells from EGCG-induced apoptosis. EGCG-induced reductions in cell viability and PrdxV levels were also observed in primary CD138+ multiple myeloma cells from patients. These results suggest that PrdxV is a key target via which EGCG mediates its anticancer effects.
Lina Ren; Hee-Young Yang; Hoon-In Choi; Kyoung-Jin Chung; Ung Yang; Il-Kwon Lee; Hyeoung-Joon Kim; Dong-Seok Lee; Byung-Ju Park; Tae-Hoon Lee
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Oncology research     Volume:  19     ISSN:  0965-0407     ISO Abbreviation:  Oncol. Res.     Publication Date:  2011  
Date Detail:
Created Date:  2012-02-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9208097     Medline TA:  Oncol Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  391-8     Citation Subset:  IM    
Department of Biochemistry, Dental Science Research Institute, The 2nd Stage of Brain Korea 21 for Dental School, Chonnam National University, Gwangju, South Korea.
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