ING4 Mediates Crosstalk between Histone H3 K4 Trimethylation and H3 Acetylation to Attenuate Cellular Transformation

被引：168

作者：

Hung, Tiffany ^{[1
]}

Binda, Olivier ^{[1
]}

Champagne, Karen S. ^{[2
]}

Kuo, Alex J. ^{[1
]}

Johnson, Kyle ^{[2
]}

Chang, Howard Y. ^{[3
]}

Simon, Matthew D. ^{[4
]}

Kutateladze, Tatiana G. ^{[2
]}

Gozani, Or ^{[1
]}

机构：

[1] Stanford Univ, Dept Biol, Stanford, CA 94305 USA

[2] Univ Colorado Denver, Dept Pharmacol, Aurora, CO 80045 USA

[3] Stanford Univ, Sch Med, Program Epithelial Biol, Stanford, CA 94305 USA

[4] Massachusetts Gen Hosp, Dept Mol Biol, Boston, MA 02114 USA

来源：

MOLECULAR CELL | 2009年 / 33卷 / 02期

关键词：

TUMOR-SUPPRESSOR GENE; PHD FINGER; LYSINE-4; TRIMETHYLATION; H3K4ME3; RECOGNITION; PLANT HOMEODOMAIN; MOLECULAR-BASIS; METHYLATION; BINDING; GROWTH; TRANSCRIPTION;

D O I：

10.1016/j.molcel.2008.12.016

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Aberrations in chromatin dynamics play a fundamental role in tumorigenesis, yet relatively little is known of the molecular mechanisms linking histone lysine methylation to neoplastic disease. ING4 (Inhibitor of Growth 4) is a native subunit of an HBO1 histone acetyltransferase (HAT) complex and a tumor suppressor protein. Here we show a critical role for specific recognition of histone H3 trimethylated at lysine 4 (H3K4me3) by the ING4 PHD finger in mediating ING4 gene expression and tumor suppressor functions. The interaction between ING4 and H3K4me3 augments HBO1 acetylation activity on H3 tails and drives H3 acetylation at ING4 target promoters. Further, ING4 facilitates apoptosis in response to genotoxic stress and inhibits anchorage-independent cell growth, and these functions depend on ING4 interactions with H3K4me3. Together, our results demonstrate a mechanism for brokering crosstalk between H3K4 methylation and H3 acetylation and reveal a molecular link between chromatin modulation and tumor suppressor mechanisms.

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页码：248 / 256

页数：9

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