GCN5 maintains muscle integrity by acetylating YY1 to promote dystrophin expression.
GCN5 maintains muscle integrity by acetylating YY1 to promote dystrophin expression.
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GCN5 通过乙酰化 YY1 促进肌营养不良蛋白表达来维持肌肉完整性
DOI:
10.1083/jcb.202104022
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发表时间:
2022-02-07
期刊:
影响因子:
--
通讯作者:
Menzies KJ
中科院分区:
文献类型:
--
作者:
Addicks GC;Zhang H;Ryu D;Vasam G;Green AE;Marshall PL;Patel S;Kang BE;Kim D;Katsyuba E;Williams EG;Renaud JM;Auwerx J;Menzies KJ
Addicks et al. identify a role for protein acetylation in the regulation of muscle integrity by linking GCN5 acetyltransferase activity to the expression of dystrophin and other genes important for muscle structure. They find that this occurs through GCN5-directed acetylation of the transcriptional repressor YY1. Protein lysine acetylation is a post-translational modification that regulates protein structure and function. It is targeted to proteins by lysine acetyltransferases (KATs) or removed by lysine deacetylases. This work identifies a role for the KAT enzyme general control of amino acid synthesis protein 5 (GCN5; KAT2A) in regulating muscle integrity by inhibiting DNA binding of the transcription factor/repressor Yin Yang 1 (YY1). Here we report that a muscle-specific mouse knockout of GCN5 (Gcn5skm−/−) reduces the expression of key structural muscle proteins, including dystrophin, resulting in myopathy. GCN5 was found to acetylate YY1 at two residues (K392 and K393), disrupting the interaction between the YY1 zinc finger region and DNA. These findings were supported by human data, including an observed negative correlation between YY1 gene expression and muscle fiber diameter. Collectively, GCN5 positively regulates muscle integrity through maintenance of structural protein expression via acetylation-dependent inhibition of YY1. This work implicates the role of protein acetylation in the regulation of muscle health and for consideration in the design of novel therapeutic strategies to support healthy muscle during myopathy or aging.
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影响因子:
8.1
作者:
Dent JR;Martins VF;Svensson K;LaBarge SA;Schlenk NC;Esparza MC;Buckner EH;Meyer GA;Hamilton DL;Schenk S;Philp A
通讯作者:
Philp A
影响因子:
2.5
作者:
Champy, Marie-France;Selloum, Mohammed;Auwerx, Johan
通讯作者:
Auwerx, Johan
影响因子:
4.8
作者:
Galvagni, F;Cartocci, E;Oliviero, S
通讯作者:
Oliviero, S
影响因子:
7.7
作者:
Bi, Pengpeng;Yue, Feng;Kuang, Shihuan
通讯作者:
Kuang, Shihuan
影响因子:
3.3
作者:
ARMSTRONG, RB;OGILVIE, RW;SCHWANE, JA
通讯作者:
SCHWANE, JA