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The therapeutic effect of KSP inhibitors in preclinical models of cholangiocarcinoma

ABSTRACT: The therapeutic effect of KSP inhibitors in preclinical models of cholangiocarcinoma

PROVIDER: PRJNA874686 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21292640_1.fastq.gz	Fastqsanger.gz
	SRR21292640_2.fastq.gz	Fastqsanger.gz
	SRR21292641_1.fastq.gz	Fastqsanger.gz
	SRR21292641_2.fastq.gz	Fastqsanger.gz
	SRR21292642_1.fastq.gz	Fastqsanger.gz

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The therapeutic effect of KSP inhibitors in preclinical models of cholangiocarcinoma

Project description:Cholangiocarcinoma (CCA) is an epithelial malignancy with a dismal prognosis owing to limited treatment options. Here, we identified several compound candidates against CCA using a high-throughput drug screen with approved or emerging oncology drugs, among which kinesin spindle protein (KSP) inhibitors showed potent cytotoxic effects on CCA cells. Treatment with KSP inhibitors SB743921 and ARRY520 caused significant tumor suppression in CCA xenograft models in vivo. Mechanistically, KSP inhibitors led to the formation of abnormal monopolar spindles, which further resulted in the mitotic arrest and cell death of CCA cells both in vivo and in vitro. KEGG pathway analysis of transcriptional data confirmed this finding. Moreover, our clinical data as well as the TCGA database showed KIF11 expression was abundant in most CCA tumor specimens and associated with poor outcomes of CCA patients. Our results demonstrate that the therapeutic regimen of KSP inhibitors could be a promising treatment strategy in CCA.

2022-09-28 | GSE212232 | GEO

Therapeutic efficacy of FASN inhibition in preclinical models of HCC

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Targeting LCK utilizing a selective inhibitor as a therapeutic approach in Cholangiocarcinoma

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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Project description:Background & Aims: Aberrant activation of fatty acid synthase (FASN) is a major metabolic event during the development of HCC. We evaluated the therapeutic efficacy of TVB3664, a novel FASN inhibitor, either alone or in combination, for HCC treatment. Approach & Results: The therapeutic efficacy and the molecular pathways targeted by TVB3664, either alone or with tyrosine kinase inhibitors or the checkpoint inhibitor anti-PD-L1 antibody, were assessed in human HCC cell lines and multiple oncogene-driven HCC mouse models. RNAseq was performed to characterize the global gene expression and metabolic profiles. TVB3664 effectively ameliorated the fatty liver phenotype in the aged mice and AKT activation-induced hepatic steatosis. TVB3664 monotherapy showed moderate efficacy in NASH-related murine HCCs, induced by loss of PTEN and c-MET overexpression. TVB3664, in combination with cabozantinib, triggered tumor regression in this mouse HCC model but did not improve the responsiveness to immunotherapy. Global gene expression revealed that TVB3664 predominantly modulated metabolic processes, while TVB3664 synergized with cabozantinib to downregulate multiple cancer-related pathways, especially the AKT/mTOR pathway and cell proliferation genes. TVB3664 also improved the therapeutic efficacy of sorafenib and cabozantinib in the FASN-dependent c-MYC HCC model. However, TVB3664 had no efficacy nor synergistic effects in FASN-independent mouse HCC models. Conclusions: This preclinical study suggests the limited efficacy of targeting FASN as monotherapy for HCC treatment. However, FASN inhibitors could be combined with other drugs for improved effectiveness. These combination therapies could be developed based on the driver oncogenes, supporting precision medicine approaches for HCC treatment.

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