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Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Nucleic+Acids+Res 2017 ; 45 (3): 1144-58 Nephropedia Template TP
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Histone H2B monoubiquitination is a critical epigenetic switch for the regulation of autophagy #MMPMID28180298
Chen S; Jing Y; Kang X; Yang L; Wang DL; Zhang W; Zhang L; Chen P; Chang JF; Yang XM; Sun FL
Nucleic Acids Res 2017[Feb]; 45 (3): 1144-58 PMID28180298show ga
Autophagy is an evolutionarily conserved cellular process that primarily participates in lysosome-mediated protein degradation. Although autophagy is a cytoplasmic event, how epigenetic pathways are involved in the regulation of autophagy remains incompletely understood. Here, we found that H2B monoubiquitination (H2Bub1) is down-regulated in cells under starvation conditions and that the decrease in H2Bub1 results in the activation of autophagy. We also identified that the deubiquitinase USP44 is responsible for the starvation-induced decrease in H2Bub1. Furthermore, the changes in H2Bub1 affect the transcription of genes involved in the regulation of autophagy. Therefore, this study reveals a novel epigenetic pathway for the regulation of autophagy through H2Bub1.