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Further inhibition of Histone H2A ubiquitination protects myocardium against ischemia/reperfusion injury through enhancing glycolysis and improving mitochondrial function via promoting Hsp27 expression

ABSTRACT: Further inhibition of Histone H2A ubiquitination protects myocardium against ischemia/reperfusion injury through enhancing glycolysis and improving mitochondrial function via promoting Hsp27 expression

PROVIDER: PRJNA935347 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR23489631_1.fastq.gz	Fastqsanger.gz
	SRR23489631_2.fastq.gz	Fastqsanger.gz
	SRR23489632_1.fastq.gz	Fastqsanger.gz
	SRR23489632_2.fastq.gz	Fastqsanger.gz
	SRR23489633_1.fastq.gz	Fastqsanger.gz

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Further inhibition of Histone H2A ubiquitination protects myocardium against ischemia/reperfusion injury through enhancing glycolysis and improving mitochondrial function via promoting Hsp27 expression [I]

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Project description:Polycomb repressive complex 1 (PRC1) catalyzes H2A monoubiquitination (uH2A) and regulates pluripotency in embryonic stem cells (ESCs). However the mechanisms controlling PRC1 recruitment and activity are largely unknown. Here we show that Fbxl10 interacts with Ring1B and Nspc1, forming a non-canonical PRC1. We demonstrate that Fbxl10-PRC1 is essential for H2A ubiquitination in mouse ESCs. Genome-wide analyses reveal that Fbxl10 preferentially binds to CpG islands and co-localizes with Ring1B on Polycomb target genes. Notably, Fbxl10 depletion causes modest dissociation of Ring1B but a major loss of uH2A on target genes. Furthermore rescue experiments for Fbxl10 reveal that its DNA binding capability and integration into PRC1 are required for proper H2A ubiquitination. ES cells lacking Fbxl10, like previously characterized Polycomb mutants, show a severely compromised capacity for successful differentiation. Our results shed light on a novel mechanism how CpG islands regulate chromatin function by affecting polycomb recruitment and activity. All ChIP-seq reactions were performed in either untransfected cells, cells expressing scrambled shRNA or Fbxl10 shRNA, Ring1b-/- or Suz12-/- mouse ES cells

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