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Treatment of K562 cells with 1,25-dihydroxyvitamin D(3) induces distinct alterations in the expression of apoptosis-related genes BCL2, BAX, BCL(XL), and p21.
MedLine Citation:
PMID:  19475409     Owner:  NLM     Status:  In-Data-Review    
Apoptosis, or programmed cell death, is a very important phenomenon in cytotoxicity induced by anticancer treatment. 1alpha,25-Dihydroxyvitamin D(3) (1,25-(OH)(2)D(3)), the active metabolite of vitamin D, inhibits the growth of multiple types of cancer cells including breast, colon, and prostate cancer cell lines. We studied alterations in the mRNA expression levels of BCL2, BAX, CYC, BCL-XL, and VDR genes in the K562 chronic myeloid leukemia cell line in response to treatment with 1,25-(OH)(2)D(3). Morphological observation of K562 cells was evaluated by the staining with Wright's solution. Cell percentage at different phases of the cell cycle was measured, and apoptosis was measured by flow cytometry. The expression levels of the apoptosis-related genes were analyzed by real-time reverse transcription polymerase chain reaction. We found that treatment with 1,25-(OH)(2)D(3) down-regulates BCL2 and BCL-XL mRNA expressions, as well as up-regulates expressions of BAX and p21 mRNA. The expression pattern of CYC and VDR genes were not influenced. However, K562 cells treated with 1,25-(OH)(2)D(3) caused an arrest of cell cycle progression in G1 phase resulting in a decreased number of cells in the S phase, complemented by an accumulation of cells in the G0-G1 phases. Our data show the modulatory effects of 1,25-(OH)(2)D(3) treatment in apoptosis-related genes in K562 cells.
Sefa Kizildag; Halil Ates; Servet Kizildag
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Publication Detail:
Type:  Journal Article     Date:  2009-05-28
Journal Detail:
Title:  Annals of hematology     Volume:  89     ISSN:  0939-5555     ISO Abbreviation:  Ann. Hematol.     Publication Date:  2010 Jan 
Date Detail:
Created Date:  2012-08-08     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9107334     Medline TA:  Ann Hematol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1-7     Citation Subset:  IM    
Department of Medical Biology and Medical Genetics, Faculty of Medicine, Dokuz Eylul University, 35340 Inciralti, Izmir, Turkey,
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