文献库 文献相关信息

题目:
Regulation of apoptosis by a prostate-specific and prostate cancer-associated noncoding gene, PCGEM1.
作者:
Fu(Xiaoqin),Ravindranath(Lakshmi),Tran(Nicholas),Petrovics(Gyorgy),Srivastava(Shiv)
状态:
发布时间2006-03-29 , 更新时间 2013-11-21
期刊:
DNA Cell Biol
摘要:
PCGEM1 is a prostate tissue-specific, and prostate cancer-associated noncoding RNA (ncRNA) gene. Previous results revealed a significant association of elevated PCGEM1 expression levels in prostate cancer cells of African-American patients, whose mortality rate is the highest among prostate cancer patients. Functional study of PCGEM1 demonstrated a marked increase in colony formation in LNCaP prostate cancer cells and NIH3T3 mouse fibroblast cells. This study demonstrates that PCGEM1 overexpression in LNCaP cell culture model results in the inhibition of apoptosis induced by doxorubicin (DOX). Induction of p53 and p21(Waf1/Cip1) by DOX were delayed in LNCaP cells stably overexpressing PCGEM1 (LNCaP-PCGEM1 cells) compared to control LNCaP cells. The protein levels of cleaved caspase 7, and cleaved PARP were attenuated in DOXtreated LNCaP-PCGEM1 cells compared to control LNCaP cells. Similar results were observed in LNCaP cells transiently overexpressing PCGEM1. The inhibition of PARP cleavage by PCGEM1 overexpression was also observed in LNCaP-PCGEM1 cells incubated with etoposide and sodium selenite. Fluorescence-Activated Cell Sorter Annexin-V analysis revealed significantly lower percentage of apoptotic cells in DOX-treated LNCaP-PCGEM1 cells compared to control LNCaP cells. The attenuation of apoptic response appears to be androgen dependent in this experimental model, as androgen-independent variants of LNCaP cells did not exhibit this response. In summary, this study provides new insights into cell biologic functions and novel features of an ncRNA. Further, these data unravel biological mechanisms of cell growth/cell survival-associated functions of this ncRNA in a widely used prostate cancer cell culture model.
语言:
eng
DOI:
10.1089/dna.2006.25.135

联系方式

山东省济南市章丘区文博路2号 齐鲁师范学院 genelibs生信实验室

山东省济南市高新区舜华路750号大学科技园北区F座4单元2楼

电话: 0531-88819269

E-mail: product@genelibs.com

微信公众号

关注微信订阅号,实时查看信息,关注医学生物学动态。