Enhanced HSP70 lysine methylation promotes proliferation of cancer cells through activation of Aurora kinase B.
Enhanced HSP70 lysine methylation promotes proliferation of cancer cells through activation of Aurora kinase B.
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DOI:
10.1038/ncomms2074
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发表时间:
2012
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
作者:
Although heat-shock protein 70 (HSP70), an evolutionarily highly conserved molecular chaperone, is known to be post-translationally modified in various ways such as phosphorylation, ubiquitination and glycosylation, physiological significance of lysine methylation has never been elucidated. Here we identify dimethylation of HSP70 at Lys-561 by SETD1A. Enhanced HSP70 methylation was detected in various types of human cancer by immunohistochemical analysis, although the methylation was barely detectable in corresponding non-neoplastic tissues. Interestingly, methylated HSP70 predominantly localizes to the nucleus of cancer cells, whereas most of the HSP70 protein locates to the cytoplasm. Nuclear HSP70 directly interacts with Aurora kinase B (AURKB) in a methylation-dependent manner and promotes AURKB activity in vitro and in vivo. We also find that methylated HSP70 has a growth-promoting effect in cancer cells. Our findings demonstrate a crucial role of HSP70 methylation in human carcinogenesis. HSP70 is a molecular chaperone that aids protein folding. In this study, HSP70 is shown to be methylated and this post-translationally modified protein is elevated in expression in human cancers and promotes the activity of Aurora kinase B.
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DOI:
10.1083/jcb.105.5.2053
发表时间:
1987-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
Cooke CA;Heck MM;Earnshaw WC
通讯作者:
Earnshaw WC
影响因子:
37.3
作者:
Hayami S;Yoshimatsu M;Veerakumarasivam A;Unoki M;Iwai Y;Tsunoda T;Field HI;Kelly JD;Neal DE;Yamaue H;Ponder BA;Nakamura Y;Hamamoto R
通讯作者:
Hamamoto R
影响因子:
11.2
作者:
Kato, T;Daigo, Y;Nakamura, Y
通讯作者:
Nakamura, Y
影响因子:
8
作者:
Kikuchi, T;Daigo, Y;Nakamura, Y
通讯作者:
Nakamura, Y
影响因子:
4.3
作者:
Guinez, C;Losfeld, ME;Lefebvre, T
通讯作者:
Lefebvre, T