And-1 is required for the stability of histone acetyltransferase Gcn5.
And-1 is required for the stability of histone acetyltransferase Gcn5.
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DOI:
10.1038/onc.2011.261
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发表时间:
2012-02-02
期刊:
影响因子:
8
通讯作者:
Zhu, W.
中科院分区:
文献类型:
--
作者:
Li, Y.;Jaramillo-Lambert, A. N.;Yang, Y.;Williams, R.;Lee, N. H.;Zhu, W.
Histone acetyltransferases (HATs) play a central role in the modification of chromatin as well as in pathogenesis of a broad set of diseases including cancers. Gcn5 is the first identified transcription-related histone acetyltransferase (HAT) that has been implicated in the regulation of diverse cellular functions. However, how Gcn5 proteins are regulated remains largely unknown. Here we show that And-1 (a HMG domain-containing protein) has remarkable capability to regulate the stability of Gcn5 proteins and thereby histone H3 acetylation. We find that And-1 forms a complex with both histone H3 and Gcn5. Downregulation of And-1 results in Gcn5 degradation, leading to the reduction of H3K9 and H3K56 acetylation. And-1 overexpression stabilizes Gcn5 through protein-protein interactions in vivo. Furthermore, And-1 expression is increased in cancer cells in a manner correlating with increased Gcn5 and H3K9Ac and H3K56Ac. Thus, our data reveal not only a functional link between Gcn5 and And-1 that is essential to regulate Gcn5 protein stability and histone H3 acetylation, but also a potential role of And-1 in cancer.
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