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Nuclear lamin A/C phosphorylation by loss of Androgen Receptor is a global determinant of cancer-associated fibroblast activation [ChIP-Seq]

ABSTRACT: Nuclear lamin A/C phosphorylation by loss of Androgen Receptor is a global determinant of cancer-associated fibroblast activation [ChIP-Seq]

PROVIDER: PRJNA1141461 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR30022831_1.fastq.gz	Fastqsanger.gz
	SRR30022831_2.fastq.gz	Fastqsanger.gz
	SRR30022832_1.fastq.gz	Fastqsanger.gz
	SRR30022832_2.fastq.gz	Fastqsanger.gz
	SRR30022833_1.fastq.gz	Fastqsanger.gz

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Nuclear lamin A/C phosphorylation by loss of Androgen Receptor is a global determinant of cancer-associated fibroblast activation

Project description:Nuclear lamin A/C phosphorylation by loss of Androgen Receptor is a global determinant of cancer-associated fibroblast activation

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Nuclear lamin A/C phosphorylation by loss of Androgen Receptor is a global determinant of cancer-associated fibroblast activation

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Nuclear lamin A/C phosphorylation by loss of Androgen Receptor is a global determinant of cancer-associated fibroblast activation [ATAC-Seq]

Project description:Alterations of nuclear structure and function, and associated impact on gene transcription, are a hallmark of cancer cells. Little is known of these alterations in Cancer-Associated Fibroblasts (CAFs), a key component of the tumor stroma. Here we show that loss of androgen receptor (AR), which triggers early steps of CAF activation in human dermal fibroblasts (HDFs), leads to nuclear membrane alterations with increased micronuclei formation and frequent ruptures, with similar alterations occurring in fully established CAFs. AR associates with nuclear lamin A/C and loss of AR results in a substantially increased lamin A/C nucleoplasmic redistribution. Mechanistically, AR functions as a bridge between lamin A/C with the protein phosphatase PPP1. In parallel with a decreased lamin-PPP1 association, AR loss results in a marked increase of lamin A/C phosphorylation at Ser 301, which is also a feature of CAFs. Phospho-Ser301 Lamin A/C binds to the transcription promoter regulatory region of multiple CAF marker genes upregulated by AR loss, and expression of a lamin A/CSer301 phosphomimetic mutant is sufficient for conversion of normal fibroblasts into tumor-promoting CAFs. The findings point to an AR - lamin A/C - PPP1 axis and lamin A/C phosphorylation at ser 301 as critical determinants of CAF activation. Determining chromatin accessibility changes associated with androgen receprtor (AR) silencing in human dermal fibroblasts using Assay for Transposase-Accessible Chromatin with sequencing (ATAC-Seq).

2024-08-06 | GSE230416 | GEO

Nuclear lamin A/C phosphorylation by loss of Androgen Receptor is a global determinant of cancer-associated fibroblast activation

2024-08-12 | PXD042059 | Pride

Nuclear lamin A/C phosphorylation by loss of Androgen Receptor is a global determinant of cancer-associated fibroblast activation

Project description:Alterations of nuclear structure and function, and associated impact on gene transcription, are a hallmark of cancer cells. Little is known of these alterations in Cancer-Associated Fibroblasts (CAFs), a key component of the tumor stroma. Here we show that loss of androgen receptor (AR), which triggers early steps of CAF activation in human dermal fibroblasts (HDFs), leads to nuclear membrane alterations and increased micronuclei formation, which are unlinked from induction of cellular senescence. Similar alterations occur in fully established CAFs, which are overcome by restored AR function. AR associates with nuclear lamin A/C and loss of AR results in a substantially increased lamin A/C nucleoplasmic redistribution. Mechanistically, AR functions as a bridge between lamin A/C with the protein phosphatase PPP1. In parallel with a decreased lamin-PPP1 association, AR loss results in a marked increase of lamin A/C phosphorylation at Ser 301, which is also a feature of CAFs. Phosphorylated lamin A/C at Ser 301 binds to the transcription promoter regulatory region of several CAF effector genes, which are upregulated due to the loss of AR. More directly, expression of a lamin A/C Ser301 phosphomimetic mutant alone is sufficient to convert normal fibroblasts into tumor-promoting CAFs of the myofibroblast subtype, without an impact on senescence. These findings highlight the pivotal role of the AR-lamin A/C-PPP1 axis and lamin A/C phosphorylation at Ser 301 in driving CAF activation.

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Nuclear lamin A/C phosphorylation by loss of Androgen Receptor is a global determinant of cancer-associated fibroblast activation [Affymetrix]

Project description:Alterations of nuclear structure and function, and associated impact on gene transcription, are a hallmark of cancer cells. Little is known of these alterations in Cancer-Associated Fibroblasts (CAFs), a key component of the tumor stroma. Here we show that loss of androgen receptor (AR), which triggers early steps of CAF activation in human dermal fibroblasts (HDFs), leads to nuclear membrane alterations with increased micronuclei formation and frequent ruptures, with similar alterations occurring in fully established CAFs. AR associates with nuclear lamin A/C and loss of AR results in a substantially increased lamin A/C nucleoplasmic redistribution. Mechanistically, AR functions as a bridge between lamin A/C with the protein phosphatase PPP1. In parallel with a decreased lamin-PPP1 association, AR loss results in a marked increase of lamin A/C phosphorylation at Ser 301, which is also a feature of CAFs. Phospho-Ser301 Lamin A/C binds to the transcription promoter regulatory region of multiple CAF marker genes upregulated by AR loss, and expression of a lamin A/CSer301 phosphomimetic mutant is sufficient for conversion of normal fibroblasts into tumor-promoting CAFs. The findings point to an AR - lamin A/C - PPP1 axis and lamin A/C phosphorylation at ser 301 as critical determinants of CAF activation. Determining transcriptomic profile of Phospho Ser 301 mimetic mutant (S301D) and WT lamin A/C expressing HDFs.

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Nuclear lamin A/C phosphorylation by loss of Androgen Receptor is a global determinant of cancer-associated fibroblast activation [ChIP-Seq]

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Nuclear lamin A/C phosphorylation by loss of Androgen Receptor is a global determinant of cancer-associated fibroblast activation [ChIP-Seq2]

2024-08-06 | GSE230507 | GEO

Nuclear lamin A/C phosphorylation by loss of Androgen Receptor is a global determinant of cancer-associated fibroblast activation [Affymetrix]

Project description:Nuclear lamin A/C phosphorylation by loss of Androgen Receptor is a global determinant of cancer-associated fibroblast activation [Affymetrix]

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Project description:Nuclear lamin A/C phosphorylation by loss of Androgen Receptor is a global determinant of cancer-associated fibroblast activation [ATAC-Seq]

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