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Identification of PRMT5 as a therapeutic target in cholangiocarcinoma

ABSTRACT: Identification of PRMT5 as a therapeutic target in cholangiocarcinoma

PROVIDER: PRJNA1125385 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR29433328_1.fastq.gz	Fastqsanger.gz
	SRR29433328_2.fastq.gz	Fastqsanger.gz
	SRR29433329_1.fastq.gz	Fastqsanger.gz
	SRR29433329_2.fastq.gz	Fastqsanger.gz
	SRR29433330_1.fastq.gz	Fastqsanger.gz

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Identification of PRMT5 as a therapeutic target in cholangiocarcinoma [RNA-seq II]

Project description:Cholangiocarcinoma is a very aggressive cancer whose incidence is increasing. Moreover, chemotherapies are little effective and the response to immune checkpoint inhibitors is low. We have identified protein arginine-methyltransferase 5 (PRMT5) as a novel therapeutic target in cholangiocarcinoma. Treatment with PRMT5 inhibitor significantly restrains the growth of experimental cholangiocarcinoma model TAZ/AKT without adverse effects. Our findings support the evaluation of PRMT5 inhibitors in clinical trials.

2025-06-17 | GSE270181 | GEO

Identification of PRMT5 as a therapeutic target in cholangiocarcinoma [RNA-seq I]

Project description:Cholangiocarcinoma is a very aggressive cancer whose incidence is increasing. Moreover, chemotherapies are little effective and the response to immune checkpoint inhibitors is low. We have identified protein arginine-methyltransferase 5 (PRMT5) as a novel therapeutic target in cholangiocarcinoma. PRMT5-targeting drugs markedly inhibited CCA cells proliferation, synergizing with cisplatin and gemcitabine, and hindered the growth of cholangiocarcinoma organoids. PRMT5 inhibition blunted the expression of oncogenic genes involved in chromatin remodeling and DNA repair, consistently inducing the formation of RNA-loops and promoting DNA damage. Our findings support the evaluation of PRMT5 inhibitors in clinical trials.

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Identification of PRMT5 as a therapeutic target in cholangiocarcinoma [RNA-seq II]

Project description:Identification of PRMT5 as a therapeutic target in cholangiocarcinoma [RNA-seq II]

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Identification of PRMT5 as a therapeutic target in cholangiocarcinoma [RNA-seq I]

Project description:Identification of PRMT5 as a therapeutic target in cholangiocarcinoma [RNA-seq I]

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Identification of PRMT5 as a therapeutic target in cholangiocarcinoma

Project description:This SuperSeries is composed of the SubSeries listed below.

2025-06-17 | GSE270182 | GEO

Validation of protein arginine methyltransferase 5 (PRMT5) as a candidate therapeutic target in the spontaneous canine model of non-Hodgkin lymphoma [array]

Project description:Targeting PRMT5 in canine lymphoma: we characterized expression patterns of PRMT5 in canine lymphomas and correlated these with histological subtypes using tissue microarrays. We characterized expression of PRMT5 in three canine lymphoma-derived cell lines and primary lymph node biopsies. We have demonstrated that inhibition of PRMT5 leads to growth suppression and induction of apoptosis in canine lymphoma cell lines and primary canine lymphoma cells in a time and dose-dependent manner, while selectively decreasing global marks of symmetric dimethylarginine (SDMA) and histone H4 arginine 3 symmetric di-methylation. We performed ATAC-sequencing with pathway enrichment analysis to characterize genome-wide changes in chromatin accessibility after PRMT5 inhibition. We performed gene expression microarrays with pathway analysis to characterize whole transcriptome changes in canine lymphoma cell lines treated with PRMT5 inhibitors. This work validates PRMT5 as a promising therapeutic target for canine lymphoma and supports the continued used of the spontaneously occurring canine lymphoma model for the preclinical development of PRMT5 inhibitors for the treatment of human NHL.

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Validation of protein arginine methyltransferase 5 (PRMT5) as a candidate therapeutic target in the spontaneous canine model of non-Hodgkin lymphoma [ATAC-seq]

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Project description:There is an unmet need to develop novel, effective medical therapies for cholangiocarcinoma (CCA). The Hippo pathway effector, YAP, is oncogenic in cholangiocarcinoma; however, attempts to therapeutically target YAP in vivo have been unsuccessful thus far. Recently, we described a novel role for the Src-family kinase LCK in activating YAP through tyrosine phosphorylation. This led to the hypothesis that LCK may be a viable therapeutic target in cholangiocarcinoma to regulate YAP activity. NTRC 0652-0 is a novel tyrosine kinase inhibitor with specificity for LCK. NTRC 0652-0 demonstrated selectivity for LCK inhibition in vitro and in cholangiocarcinoma cells. NTRC 0652-0 treatment led to decreased tyrosine phosphorylation of YAP, inhibition of its activity and apoptotic cell death in cholangiocarcinoma cell lines, associated with inhibition of MCL1 expression - consider rephrasing this last part to make the sentence read better. The extent of sensitivity of patient-derived organoids to NTRC 0652-0 correlated with basal YAP tyrosine phosphorylation and suppression of YAP co-transcriptional activity following drug treatment. In a patient-derived xenograft CCA model bearing an FGFR2 fusion, daily oral treatment with NTRC 0652-0 produced stable tumor drug levels, acceptable toxicity, and significantly decreased tumor growth. Overall, a novel LCK inhibitor, NTRC 0652-0, inhibited YAP signaling and demonstrated preclinical efficacy in CCA cell-lines, organoids, and patient derived xenograft models.

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Genetic Screen Identified Prmt5 as a Neuroprotection Target against Cerebral Ischemia [RNA-seq]

Project description:Epigenetic regulators present novel opportunities for both ischemic stroke research and therapeutic interventions. While previous work has implicated that they may provide neuroprotection by potentially influencing coordinated sets of genes and pathways, most of them remains largely uncharacterized in ischemic conditions. In this study, we used the oxygen-glucose deprivation (OGD) model in the immortalized mouse hippocampal neuronal cell line HT-22 and carried out an RNAi screen on epigenetic regulators. We identified Prmt5 as a novel negative regulator of neuronal cell survival after OGD, which presented a phenotype of translocation from the cytosol to the nucleus upon oxygen and energy depletion both in vitro and in vivo. Prmt5 bound to the chromatin and a large number of promoter regions to repress downstream gene expression. Silencing Prmt5 significantly dampened the OGD-induced changes for a large-scale of genes, and gene ontology analysis showed that Prmt5-target genes were highly enriched for Hedgehog signaling. Encouraged by the above observation, we treated mice with middle cerebral artery occlusion (MCAO) with the Prmt5 inhibitor EPZ015666 and found that Prmt5 inhibition sustain protection against neuronal death in vivo. Together, our findings revealed a novel epigenetic mechanism of Prmt5 in cerebral ischemia and uncovered a potential target for neuroprotection.

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