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Effect of global MYC DNA binding due to loss of PIN1

ABSTRACT: Effect of global MYC DNA binding due to loss of PIN1

PROVIDER: PRJNA430961 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR7995430.fastq.gz	Fastqsanger.gz
	SRR7995427.fastq.gz	Fastqsanger.gz
	SRR7995428.fastq.gz	Fastqsanger.gz
	SRR7995429.fastq.gz	Fastqsanger.gz

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Effect of global MYC DNA binding due to loss of PIN1

Project description:The goal of this study was to determine the MYC binding difference between WT and PIN1 knockout mouse embryonic fibroblasts.

2018-11-20 | GSE109458 | GEO

Effect of chromatin accessibility due to loss of PIN1

Project description:Effect of chromatin accessibility due to loss of PIN1

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Pin1 is required for sustained B cell proliferation upon oncogenic activation of Myc

Project description:The c-myc proto-oncogene is activated by translocation in Burkitt's lymphoma and substitutions in codon 58 stabilize the Myc protein or augment its oncogenic potential. In wild-type Myc, phosphorylation of Ser 62 and Thr 58 provide a landing pad for the peptidyl prolyl-isomerase Pin1, which in turn promotes Ser 62 dephosphorylation and Myc degradation. However, the role of Pin1 in Myc-induced lymphomagenesis remains unknown. We show here that genetic ablation of Pin1 reduces lymphomagenesis in EÂµ-myc transgenic mice. In both Pin1-deficient B-cells and MEFs, the proliferative response to Myc was selectively impaired, with no alterations in Myc-induced apoptosis or mitogen-induced cell cycle entry. This proliferative defect wasn't attributable to alterations in either Ser 62 phosphorylation or Myc-regulated transcription, but to the indirect activation of an Arf-p53 dependent cytostatic response. Pin1 silencing in lymphomas retarded disease progression in mice, making Pin1 an attractive therapeutic target in Myc-driven tumors. RNAseq samples of Pin1+/+ control (n=4), Pin1 -/- control (n=2), Pin1+/+ EÂµ-myc pre-tumoral (n=3), and Pin1-/- EÂµ-myc pre-tumoral (n=4) B cells.

2016-06-14 | E-GEOD-77482 | biostudies-arrayexpress

Pin1 is required for sustained B cell proliferation upon oncogenic activation of Myc

Project description:The c-myc proto-oncogene is activated by translocation in Burkitt's lymphoma and substitutions in codon 58 stabilize the Myc protein or augment its oncogenic potential. In wild-type Myc, phosphorylation of Ser 62 and Thr 58 provide a landing pad for the peptidyl prolyl-isomerase Pin1, which in turn promotes Ser 62 dephosphorylation and Myc degradation. However, the role of Pin1 in Myc-induced lymphomagenesis remains unknown. We show here that genetic ablation of Pin1 reduces lymphomagenesis in Eµ-myc transgenic mice. In both Pin1-deficient B-cells and MEFs, the proliferative response to Myc was selectively impaired, with no alterations in Myc-induced apoptosis or mitogen-induced cell cycle entry. This proliferative defect wasn't attributable to alterations in either Ser 62 phosphorylation or Myc-regulated transcription, but to the indirect activation of an Arf-p53 dependent cytostatic response. Pin1 silencing in lymphomas retarded disease progression in mice, making Pin1 an attractive therapeutic target in Myc-driven tumors.

2016-06-14 | GSE77482 | GEO

Effect of chromatin accessibility due to loss of PIN1

Project description:The goal of this study was to determine the chromatin accessibility difference between WT and PIN1 knockout mouse embryonic fibroblasts.

2018-11-20 | GSE121094 | GEO

Transcriptional changes of serum stimulation in mouse embryonic fibroblasts due to loss of PIN1

Project description:Transcriptional changes of serum stimulation in mouse embryonic fibroblasts due to loss of PIN1

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Sulfopin, a covalent inhibitor of Pin1, blocks Myc-driven tumors in vivo

Project description:The peptidyl-prolyl isomerase, Pin1, is exploited in cancer to activate oncogenes and inactivate tumor suppressors. However, despite considerable efforts, Pin1 has remained an elusive drug target. Here, we screened an electrophilic fragment library to identify covalent inhibitors targeting Pin1’s active site Cys113, leading to the development of Sulfopin, a nanomolar Pin1 inhibitor. Sulfopin is highly selective, as validated by two independent chemoproteomics methods, achieves potent cellular and in vivo target engagement, and phenocopies Pin1 genetic knockout. Pin1 inhibition had only a modest effect on cancer cell line viability. Still, Sulfopin induced downregulation of c-Myc target genes, reduced tumor progression and conferred survival benefit in murine and zebrafish models of MYCN-driven neuroblastoma, and in a murine model of pancreatic cancer. Our results demonstrate that Sulfopin is a suitable chemical probe for assessing Pin1-dependent pharmacology in cells and in vivo, and that Pin1 warrants further investigation as a potential cancer drug target.

2021-04-01 | GSE166786 | GEO

Transcriptional changes of serum stimulation in mouse embryonic fibroblasts due to loss of PIN1

Project description:The goal of this study was to determine the transcriptional difference between WT and PIN1 knockout mouse embryonic fibroblasts.

2018-11-20 | GSE109457 | GEO

Pin1 mediates Ab42-mediated dendritic spine loss

Project description:Early-stage Alzheimer's disease is characterized by the loss of dendritic spines in the neocortex of the brain. This phenomenon precedes tau pathology, plaque formation, and neurodegeneration and likely contributes to synaptic loss, memory impairment, and behavioral changes in patients. Studies suggest that spine loss is induced by soluble, multimeric Ab42, whose post-synaptic signaling activates the protein phosphatase calcineurin. We investigated how calcineurin causes spine pathology and found that the cis-trans prolyl isomerase Pin1 is a critical downstream target of Ab42/calcineurin signaling. In spines, Pin1 interacts with and is dephosphorylated by calcineurin, which rapidly suppresses its isomerase activity. Pin1 knockout or Ab42 exposure induced mature spine loss in Ab42-treated wild-type cells but had no effect on Pin1 null neurons. The data implicate Pin1 in spine maintenance and synaptic loss in early Alzheimer's disease.

2018-02-14 | MSV000082066 | MassIVE

Expression data from Pin1 inhibitor ATRA and Pin1 knockdown

Project description:ATRA was identified as a Pin1 inhibitor via fluorescence polarization-based high throughput screening. We performed microarray expression profiling to demonstrate the similarity between ATRA and Pin1 KD at the genome-wide level APL NB4 cells in response to ATRRA or inducible Pin1 knockdown for 3 days were collected for RNA extraction and hybridization on Affymetrix microarrays. We sought to validate in genome-wide level whether similarity occurred between ATRA and Pin1 knockdown-treated NB4 cells.

2015-04-12 | E-GEOD-63059 | biostudies-arrayexpress

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