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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Yang, Wen-ming Chen, Nai-tzu Lai, Chien-chen Yao, Ya-li Wang, Shi-yun Chen, Jeremy J. W. Hsieh, Feng-shu |
| Description | Author Affiliation: Hsieh FS ( Institute of Molecular Biology, National Chung Hsing University, Taichung 40227, Taiwan.); Chen NT ( Institute of Molecular Biology, National Chung Hsing University, Taichung 40227, Taiwan.); Yao YL ( Department of Biotechnology, Asia University, Taichung 41354, Taiwan.); Wang SY ( Institute of Molecular Biology, National Chung Hsing University, Taichung 40227, Taiwan.); Chen JJ ( Institute of Molecular Biology, National Chung Hsing University, Taichung 40227, Taiwan.); Lai CC ( Institute of Molecular Biology, National Chung Hsing University, Taichung 40227, Taiwan.); Yang WM ( Institute of Molecular Biology, National Chung Hsing University, Taichung 40227, Taiwan) |
| Abstract | Aberrant expression levels of transcriptional regulators result in alterations in transcriptional control. STAF65γ is a structural subunit of the GCN5 transcriptional co-activator complex. Reports showed that STAF65γ is highly expressed in several human cancer cells, but the consequences of this aberrant expression pattern remain elusive. Here, we show that the STAF65γ protein is highly expressed in lung adenocarcinoma patients and high levels of STAF65γ correlate with poor prognosis. High levels of STAF65γ cause repression of the c-Myc oncogene through physical association with transcription factor YY1 and co-repressors HDACs. Physical interactions between STAF65γ and class IIa HDACs facilitate nuclear enrichment and regulate the assembly of HDAC complexes. Moreover, SUMOylation of STAF65γ is necessary for maintaining the co-repressor complex containing YY1 and class IIa HDACs at the promoter. Our findings reveal a distinct role of STAF65γ in nuclear import, transcriptional repression, and cell cycle regulation at high levels of expression, which is associated with poor clinical outcomes of lung adenocarcinoma. |
| ISSN | 00063002 |
| Journal | Biochimica et Biophysica Acta (BBA) - Reviews on Cancer |
| Issue Number | 7 |
| Volume Number | 1839 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-07-01 |
| Publisher Place | Netherlands |
| Access Restriction | Open |
| Subject Keyword | Adenocarcinoma Genetics Histone Deacetylases Lung Neoplasms Promoter Regions, Genetic Trans-Activators Transcription, Genetic Active Transport, Cell Nucleus Pathology Cell Cycle Cell Line, Tumor Gene Expression Regulation, Neoplastic Prognosis Repressor Proteins Sumoylation YY1 Transcription Factor Research Support, Non-U.S. Gov't Biochemistry |
| Content Type | Text |
| Resource Type | Article |
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