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Identification of response signatures for tankyrase inhibitor treatment in tumor cell lines

ABSTRACT: Identification of response signatures for tankyrase inhibitor treatment in tumor cell lines

PROVIDER: PRJNA682539 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13197503.fastq.gz	Fastqsanger.gz
	SRR13197504.fastq.gz	Fastqsanger.gz
	SRR13197505.fastq.gz	Fastqsanger.gz
	SRR13197506.fastq.gz	Fastqsanger.gz
	SRR13197507.fastq.gz	Fastqsanger.gz

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Identification of response signatures for tankyrase inhibitor treatment in tumor cell lines

Project description:Small-molecule tankyrase 1 and tankyrase 2 (TNKS1/2) inhibitors are effective anti-tumor agents in selected tumor cell lines and mouse models. Here, we characterized the response signatures and the in-depth mechanisms for the anti-proliferative effect of tankyrase inhibition (TNKSi). The TNKS1/2-specific inhibitor G007-LK was used to screen 537 human tumor cell lines and a panel of in particular TNKSi-sensitive tumor cell lines was identified. Transcriptome, proteome and bioinformatic analyses revealed the overall TNKSi-induced response signatures in the selected panel. TNKSi-mediated inhibition of WNT/β-catenin, YAP and PI3K/AKT signaling was validated and correlated with lost expression of the key oncogene MYC and impaired cell growth. Moreover, we show that TNKSi induces accumulation of TNKS1/2-containing β-catenin degradasomes functioning as central complexes interacting with YAP and AMOT proteins during attenuation of YAP signaling. These findings provide a contextual and mechanistic framework for using TNKSi in anti-cancer treatment that warrants further comprehensive preclinical and clinical evaluations.

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Identification of response signatures for tankyrase inhibitor treatment in tumor cell lines

Project description:Anti-cancer treatment, using small-molecule tankyrase 1 and tankyrase 2 (TNKS1/2) inhibition (TNKSi) shows effect against selected tumor cell lines and in mouse models. Here, we characterize the responsiveness signatures and in depth mechanisms for the anti-proliferative effect of TNKSi. The TNKS1/2-specific inhibitor G007-LK was screened against 537 human tumor cell lines, and a panel of in particular TNKSi-sensitive tumor cell lines was identified. Transcriptome, proteome and bioinformatic analyses classified the overall TNKSi-induced response signatures in the selected panel. Prediction of TNKSi-mediated inhibition of WNT/β-catenin, YAP and PI3K/AKT signaling was validated and correlated with lost expression of the key oncogene MYC and impaired cell growth. Moreover, we show that TNKSi, when attenuating YAP signaling, induces accumulation of TNKS1/2-containing β-catenin degradosomes functioning as central complexes interacting with YAP and AMOT proteins. The findings provide a contextual and mechanistic framework for TNKSi in cancer cell lines rationalizing further comprehensive preclinical and clinical evaluations.

2021-06-18 | GSE162648 | GEO

Identification of response signatures for tankyrase inhibitor treatment in tumor cell lines.

Project description:Small-molecule tankyrase 1 and tankyrase 2 (TNKS1/2) inhibitors are effective antitumor agents in selected tumor cell lines and mouse models. Here, we characterized the response signatures and the in-depth mechanisms for the antiproliferative effect of tankyrase inhibition (TNKSi). The TNKS1/2-specific inhibitor G007-LK was used to screen 537 human tumor cell lines and a panel of particularly TNKSi-sensitive tumor cell lines was identified. Transcriptome, proteome, and bioinformatic analyses revealed the overall TNKSi-induced response signatures in the selected panel. TNKSi-mediated inhibition of wingless-type mammary tumor virus integration site/β-catenin, yes-associated protein 1 (YAP), and phosphatidylinositol-4,5-bisphosphate 3-kinase/AKT signaling was validated and correlated with lost expression of the key oncogene MYC and impaired cell growth. Moreover, we show that TNKSi induces accumulation of TNKS1/2-containing β-catenin degradasomes functioning as core complexes interacting with YAP and angiomotin proteins during attenuation of YAP signaling. These findings provide a contextual and mechanistic framework for using TNKSi in anticancer treatment that warrants further comprehensive preclinical and clinical evaluations.

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Expression data from tumor samples treated with a tankyrase inhibitor in a mouse xenograft model

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BET protein-dependent E2F pathway confers bell-shaped type resistance to tankyrase inhibitors in APC-mutated colorectal cancer [CUT&RUN]

Project description:In colorectal cancer (CRC), WNT/β-catenin signaling is aberrantly activated mainly by loss-of-function mutations in adenomatous polyposis coli (APC) and is involved in tumor progression. Tankyrase inhibitors, which suppress WNT/β-catenin signaling, are under pre-clinical and clinical trials, while their resistance mechanisms remain unclear. In this study, we established tankyrase inhibitor-resistant CRC cells, JC73-RK100, from APC-mutated patient-derived CRC cells. JC73-RK100 cells and several CRC cells were sensitive to tankyrase inhibitors at low concentrations but were resistant at high concentrations (i.e., bell-shaped dose response: BSDR). Mechanistically, tankyrase inhibitors at high concentrations promoted BRD3/4-dependent E2F target gene transcription and over-activated cell cycle progression in the BSDR cells. BET inhibitors canceled the bell-shaped dose response to tankyrase inhibitors. Taken together, these observations suggest that combination of tankyrase and BET inhibitors would be a useful therapeutic approach to overcome a subset of resistance to tankyrase inhibitors.

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