Title |
Oncogenic microtubule hyperacetylation through BEX4-mediated sirtuin 2 inhibition
|
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Published in |
Cell Death & Disease, August 2016
|
DOI | 10.1038/cddis.2016.240 |
Pubmed ID | |
Authors |
Jin-Kwan Lee, Janet Lee, Heounjeong Go, Chang Geun Lee, Suhyeon Kim, Hyun-Soo Kim, Hyeseong Cho, Kyeong Sook Choi, Geun-Hyoung Ha, Chang-Woo Lee |
Abstract |
Five brain-expressed X-linked (BEX) gene members (BEX1-5) are arranged in tandem on chromosome X, and are highly conserved across diverse species. However, little is known about the function and role of BEX. This study represents a first attempt to demonstrate the molecular details of a novel oncogene BEX4. Among BEX proteins, BEX4 localizes to microtubules and spindle poles, and interacts with α-tubulin (α-TUB) and sirtuin 2 (SIRT2). The overexpression of BEX4 leads to the hyperacetylation of α-TUB by inhibiting SIRT2-mediated deacetylation. Furthermore, we found BEX4 expression conferred resistance to apoptotic cell death but led to acquisition of aneuploidy, and also increased the proliferating potential and growth of tumors. These results suggest that BEX4 overexpression causes an imbalance between TUB acetylation and deacetylation by SIRT2 inhibition and induces oncogenic aneuploidy transformation. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 21 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Bachelor | 4 | 19% |
Student > Ph. D. Student | 4 | 19% |
Student > Doctoral Student | 2 | 10% |
Professor > Associate Professor | 2 | 10% |
Professor | 1 | 5% |
Other | 3 | 14% |
Unknown | 5 | 24% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 7 | 33% |
Agricultural and Biological Sciences | 3 | 14% |
Medicine and Dentistry | 3 | 14% |
Chemistry | 1 | 5% |
Unspecified | 1 | 5% |
Other | 0 | 0% |
Unknown | 6 | 29% |