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PALI1 Promotes Tumor Growth through Competitive Recruitment of PRC2 to G9A-target Chromatin for Dual Epigenetic Silencing

ABSTRACT: PALI1 Promotes Tumor Growth through Competitive Recruitment of PRC2 to G9A-target Chromatin for Dual Epigenetic Silencing

PROVIDER: PRJNA733210 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR14670206.fastq.gz	Fastqsanger.gz
	SRR14670207.fastq.gz	Fastqsanger.gz
	SRR14670208.fastq.gz	Fastqsanger.gz
	SRR14670209.fastq.gz	Fastqsanger.gz
	SRR14670210.fastq.gz	Fastqsanger.gz

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PALI1 Promotes Tumor Growth through Competitive Recruitment of PRC2 to G9A-target Chromatin for Dual Epigenetic Silencing

Project description:PALI1 is a newly identified accessory protein of the Polycomb Repressive Complex 2 (PRC2) that catalyzes H3K27 methylation. However, the roles of PALI1 in cancer are yet to be defined. Here we report that PALI1 is upregulated in advanced prostate cancer (PCa) and competes with JARID2 for binding to PRC2 core subunit SUZ12. PALI1 further interacts with the H3K9 methyltransferase G9A, bridging the formation of a unique G9A-PALI1-PRC2 super-complex that occupies a subset of G9A-target genes to mediate dual H3K9/K27 methylation and gene repression. Many of these genes are developmental regulators induced upon cell differentiation, and their loss in PCa predicts poor prognosis. Accordingly, PALI1 and G9A drive PCa cell proliferation and invasion in vitro and xenograft tumor growth in vivo. Collectively, our study shows that PALI1 harnesses two central epigenetic mechanisms to suppress cellular differentiation and promote tumorigenesis, which can be targeted by dual EZH2 and G9A inhibition.

2022-12-12 | GSE175697 | GEO

PALI1 Promotes Tumor Growth through Competitive Recruitment of PRC2 to G9A-target Chromatin for Dual Epigenetic Silencing [RNA-seq]

2022-12-12 | GSE175696 | GEO

PALI1 Promotes Tumor Growth through Competitive Recruitment of PRC2 to G9A-target Chromatin for Dual Epigenetic Silencing [ChIP-seq]

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PALI1 Promotes Tumor Growth through Competitive Recruitment of PRC2 to G9A-target Chromatin for Dual Epigenetic Silencing [RNA-Seq II]

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PALI1 Promotes Tumor Growth through Competitive Recruitment of PRC2 to G9A-target Chromatin for Dual Epigenetic Silencing [RNA-seq]

Project description:PALI1 Promotes Tumor Growth through Competitive Recruitment of PRC2 to G9A-target Chromatin for Dual Epigenetic Silencing [RNA-seq]

| PRJNA733211 | ENA

PALI1 Promotes Tumor Growth through Competitive Recruitment of PRC2 to G9A-target Chromatin for Dual Epigenetic Silencing [ChIP-seq]

Project description:PALI1 Promotes Tumor Growth through Competitive Recruitment of PRC2 to G9A-target Chromatin for Dual Epigenetic Silencing [ChIP-seq]

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PALI1 Promotes Tumor Growth through Competitive Recruitment of PRC2 to G9A-target Chromatin for Dual Epigenetic Silencing [RNA-Seq II]

Project description:PALI1 Promotes Tumor Growth through Competitive Recruitment of PRC2 to G9A-target Chromatin for Dual Epigenetic Silencing [RNA-Seq II]

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The Histone H3 Lysine 9 Methyltransferases G9a and GLP Regulate Polycomb Repressive Complex 2-Mediated Gene Silencing [Affymetrix]

Project description:G9a/GLP and Polycomb Repressive Complex 2 (PRC2) are two major epigenetic silencing machineries, which in particular methylate histone H3 on lysines 9 and 27 (H3K9 and H3K27), respectively. Although evidence of a crosstalk between H3K9 and H3K27 methylations has started to emerge, their actual interplay remains elusive. Here, we show that PRC2 and G9a/GLP interact physically and functionally. Moreover, combining different genome-wide approaches, we demonstrate that Ezh2 and G9a/GLP share an important number of common genomic targets, encoding developmental and neuronal regulators. Furthermore, we show that G9a enzymatic activity modulates PRC2 genomic recruitment to a subset of its target genes. Taken together, our findings demonstrate an unanticipated interplay between two main histone lysine methylation mechanisms, which cooperate to maintain silencing of a subset of developmental genes. Microarray has been perform in triplicate on total extract RNA from mES cell (TT2 : Wildtype and KOs G9a-/-, GLP-/-, G9a-/- and GLP-/-)

2014-01-03 | E-GEOD-46544 | biostudies-arrayexpress

The Histone H3 Lysine 9 Methyltransferases G9a and GLP Regulate Polycomb Repressive Complex 2-Mediated Gene Silencing [RNA-Seq]

Project description:G9a/GLP and Polycomb Repressive Complex 2 (PRC2) are two major epigenetic silencing machineries, which in particular methylate histone H3 on lysines 9 and 27 (H3K9 and H3K27), respectively. Although evidence of a crosstalk between H3K9 and H3K27 methylations has started to emerge, their actual interplay remains elusive. Here, we show that PRC2 and G9a/GLP interact physically and functionally. Moreover, combining different genome-wide approaches, we demonstrate that Ezh2 and G9a/GLP share an important number of common genomic targets, encoding developmental and neuronal regulators. Furthermore, we show that G9a enzymatic activity modulates PRC2 genomic recruitment to a subset of its target genes. Taken together, our findings demonstrate an unanticipated interplay between two main histone lysine methylation mechanisms, which cooperate to maintain silencing of a subset of developmental genes. RNA-seq has been perform in triplicate on mES cell (TT2 : Wildtype, and KO G9a-/-)

2014-01-03 | E-GEOD-49669 | biostudies-arrayexpress

The Histone H3 Lysine 9 Methyltransferases G9a and GLP Regulate Polycomb Repressive Complex 2-Mediated Gene Silencing [ChIP-Seq]

Project description:G9a/GLP and Polycomb Repressive Complex 2 (PRC2) are two major epigenetic silencing machineries, which in particular methylate histone H3 on lysines 9 and 27 (H3K9 and H3K27), respectively. Although evidence of a crosstalk between H3K9 and H3K27 methylations has started to emerge, their actual interplay remains elusive. Here, we show that PRC2 and G9a/GLP interact physically and functionally. Moreover, combining different genome-wide approaches, we demonstrate that Ezh2 and G9a/GLP share an important number of common genomic targets, encoding developmental and neuronal regulators. Furthermore, we show that G9a enzymatic activity modulates PRC2 genomic recruitment to a subset of its target genes. Taken together, our findings demonstrate an unanticipated interplay between two main histone lysine methylation mechanisms, which cooperate to maintain silencing of a subset of developmental genes. ChIP-seq has been performed for G9a and Ezh2 in wild type TT2 mES cells or in mES cells lacking both G9a and GLP (G9a-/-GLP-/-). As a control, input DNA was saved before immunoprecipitation. Note that the two inputs (Input_TT2_0 and Input_TT2_1) have been combined and used as control for Ezh2 and G9a ChIP-seq.

2014-01-03 | E-GEOD-46536 | biostudies-arrayexpress

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