EGFR Modulates DNA Synthesis and Repair through Tyr Phosphorylation of Histone H4

Ruey Hwang Chou, Ying Nai Wang, Yi Hsien Hsieh, Long Yuan Li, Weiya Xia, Wei Chao Chang, Ling Chu Chang, Chien Chia Cheng, Chien Chen Lai, Jennifer L. Hsu, Wei Jung Chang, Shu Ya Chiang, Hong Jen Lee, Hsin Wei Liao, Pei Huan Chuang, Hui Yu Chen, Hung Ling Wang, Sheng Chu Kuo, Chung Hsuan Chen, Yung Luen YuMien Chie Hung

Research output: Contribution to journalArticlepeer-review

68 Scopus citations

Abstract

Posttranslational modifications of histones play fundamental roles in many biological functions. Specifically, histone H4-K20 methylation is critical for DNA synthesis and repair. However, little is known about how these functions are regulated by the upstream stimuli. Here, we identify a tyrosine phosphorylation site at Y72 of histone H4, which facilitates recruitment of histone methyltransferases (HMTases), SET8 and SUV4-20H, to enhance its K20 methylation, thereby promoting DNA synthesis and repair. Phosphorylation-defective histone H4 mutant is deficient in K20 methylation, leading to reduced DNA synthesis, delayed cell cycle progression, and decreased DNA repair ability. Disrupting the interaction between epidermal growth factor receptor (EGFR) and histone H4 by Y72 peptide significantly reduced tumor growth. Furthermore, EGFR expression clinically correlates with histone H4-Y72 phosphorylation, H4-K20 monomethylation, and the Ki-67 proliferation marker. These findings uncover a mechanism by which EGFR transduces signal to chromatin to regulate DNA synthesis and repair.

Original languageEnglish (US)
Pages (from-to)224-237
Number of pages14
JournalDevelopmental cell
Volume30
Issue number2
DOIs
StatePublished - Jul 28 2014

ASJC Scopus subject areas

  • Molecular Biology
  • General Biochemistry, Genetics and Molecular Biology
  • Developmental Biology
  • Cell Biology

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