Abstract:
:Histone acetylation is one of the key chromatin modifications that control gene transcription during development and tumorigenesis. Recently, it was reported that the histone deacetylase inhibitor, Trichostatin A (TSA), induces growth arrest and apoptosis in tumors. However, the molecular mechanisms responsible for its antitumor effects are not clear. The purpose of this study was to investigate the effect of TSA on human oral squamous carcinoma cells and to determine the mechanisms underlying the antitumor activity of TSA. MTT assays showed that TSA inhibited cell proliferation in YD-10B cells. TSA also effectively arrested cell cycle progression at the G2/M phase through the up-regulation of p21waf expression, down-regulation of Cyclin B1 and reduction of the inhibitory phophorylation of Cdc2. In addition, mitochondrial membrane destruction was induced by a 48 h TSA treatment. TSA also induced cytochrome c release and proteolytic activation of caspase 3 and caspase 7 in YD-10B cells. Taken together, these observations in YD-10B oral cancer cells reveal the potential value of TSA in inhibiting oral tumor growth.
journal_name
Oncol Repjournal_title
Oncology reportsauthors
Anh TD,Ahn MY,Kim SA,Yoon JH,Ahn SGdoi
10.3892/or.2011.1496subject
Has Abstractpub_date
2012-02-01 00:00:00pages
455-60issue
2eissn
1021-335Xissn
1791-2431journal_volume
27pub_type
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