Abstract:
:Histone acetylation and deacetylaion play important roles in chromatin remodeling and gene expression. An imbalance of these reactions leads to aberrant behavior of the cells in the cell cycle, which in turn contributes to carcinogenesis. Histone deacetylase (HDAC) inhibitors have been shown to have anti-tumor effects in clinical trials. However, the exact mechanisms by which HDAC inhibitors exert anti-tumor effects and modulate gene expression are not completely understood, and remain a subject of intense investigation. In the current study, we determined whether HDACs regulate urokinase plasminogen activator (uPA), matrix metalloproteinase-9 (MMP-9), and tumor invasion. Using cDNA microarray analysis, we found that hepatocyte growth factor (HGF) induced HDAC5 expression in gastric cancer cell lines, NUGC-3 and MKN-28. TSA, a HDAC inhibitor, decreased HGF-induced HADC-5 expression and also repressed uPA and MMP-9 expression. TSA inhibited cell proliferation in both cell lines. In vitro Matrigel invasion assays showed that the HDAC inhibitor decreased cancer cell invasion. Furthermore, GO6976, a PKC inhibitor, significantly inhibited not only HGF-induced HDAC5 expression but also cell invasion. These results demonstrated that HDACs regulate HGF-induced uPA and MMP-9 expression through a PKC-dependent signal pathway in gastric cancer cells. Our data probably suggest that such activities serve as anti-tumor mechanisms of the HDAC inhibitor.
journal_name
Mol Cell Biochemjournal_title
Molecular and cellular biochemistryauthors
Lee KH,Choi EY,Kim MK,Kim KO,Jang BI,Kim SW,Kim SW,Song SK,Kim JRdoi
10.1007/s11010-010-0510-xsubject
Has Abstractpub_date
2010-10-01 00:00:00pages
163-71issue
1-2eissn
0300-8177issn
1573-4919journal_volume
343pub_type
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