Regulation of proline-directed kinases and the trans-histone code H3K9me3/H4K20me3 during human myogenesis

Natarajan V. Bhanu, Simone Sidoli, Zuo Fei Yuan, Rosalynn C. Molden, Benjamin A. Garcia

Research output: Contribution to journalArticle

Abstract

Wepresent a system-level analysis of proteome, phosphoproteome, and chromatin state of precursors of muscle cells (myoblasts) differentiating into specialized myotubes. Using stable isotope labeling of amino acids in cell culture and nano-liqud chromatography-mass spectrometry/mass spectrometry, we found that phosphorylation motifs targeted by the kinases protein kinase C, cyclin-dependent kinase, and mitogen-activated protein kinase showed increased phosphorylation during myodifferentiation of LHCN-M2 human skeletal myoblast cell line. Drugs known to inhibit these kinases either promoted (PD0325901 and GW8510) or stalled (CHIR99021 and roscovitine) differentiation, resulting in myotube and myoblast phenotypes, respectively. The proteomes, especially the myogenic and chromatin-related proteins including histone methyltransferases, correlated with their phenotypes, leading us to quantify histone post-translational modifications and identify two genesilencing marks, H3K9me3 and H4K20me3, with relative abundances changing in correlation with these phenotypes. ChIP- quantitative PCR demonstrated that H3K9me3 is erased from the gene loci of myogenic regulatory factors namely MYOD1, MYOG, and MYF5 in differentiating myotubes. Together, our work integrating histone post-translational modification, phosphoproteomics, and full proteome analysis gives a comprehensive understanding of the close connection between signaling pathways and epigenetics during myodifferentiation in vitro.

Original languageEnglish (US)
Pages (from-to)8296-8308
Number of pages13
JournalJournal of Biological Chemistry
Volume294
Issue number20
DOIs
StatePublished - Jan 1 2019
Externally publishedYes

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Histone Code
Muscle Development
Myoblasts
Skeletal Muscle Fibers
Proteome
Proline
Histones
Phosphorylation
Phosphotransferases
Post Translational Protein Processing
Phenotype
Chromatin
Mass spectrometry
Myogenic Regulatory Factors
Cells
Skeletal Myoblasts
Isotope Labeling
Cyclin-Dependent Kinases
Tandem Mass Spectrometry
Chromatography

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

Regulation of proline-directed kinases and the trans-histone code H3K9me3/H4K20me3 during human myogenesis. / Bhanu, Natarajan V.; Sidoli, Simone; Yuan, Zuo Fei; Molden, Rosalynn C.; Garcia, Benjamin A.

In: Journal of Biological Chemistry, Vol. 294, No. 20, 01.01.2019, p. 8296-8308.

Research output: Contribution to journalArticle

Bhanu, Natarajan V. ; Sidoli, Simone ; Yuan, Zuo Fei ; Molden, Rosalynn C. ; Garcia, Benjamin A. / Regulation of proline-directed kinases and the trans-histone code H3K9me3/H4K20me3 during human myogenesis. In: Journal of Biological Chemistry. 2019 ; Vol. 294, No. 20. pp. 8296-8308.
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