Abstract：
:Human telomerase reverse transcriptase (hTERT) is overexpressed in prostate cancer. Estrogen plays a central role in the development of prostate cancer. hTERT activity has been shown to be increased after estrogen treatment. Although significant efforts have been made to understand the role of estrogen, the telomerase connection with estrogen is poorly understood. In this report, we describe a proteomics approach for investigating the global changes in protein expression in estrogen-treated human prostate cancer PC-3 cells. PC-3 cells were seeded in medium and then treated with estrogen; the protein extract from these cells was used for two-dimensional (2D) gel electrophoresis. The protein spots were subjected to comparative analysis by liquid chromatography/mass spectrometry (LC/MS). We observed that the expression of 17 proteins, including stress-induced phosphoprotein 1 and lamin-A/C was down-regulated, and that the expression of proteins such as subunit alpha of T-complex protein 1, tubulin alpha-1B, and other 13 proteins was up-regulated. These proteins may have been closely associated with estrogen-induced hTERT activity. The expression level of these proteins could be a useful parameter for evaluating the estrogen-induced hTERT activity in clinical specimens of human prostate cancer.
journal_name
Cancer Genomics Proteomicsjournal_title
Cancer genomics & proteomicsauthors
Chen J,Huang P,Kaku H,Zhang K,Watanabe M,Saika T,Nasu Y,Kumon Hsubject
Has Abstractpub_date
2009-11-01 00:00:00pages
331-5issue
6eissn
1109-6535issn
1790-6245pii
6/6/331journal_volume
6pub_type
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