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Effect of FSCN1 gene inactivation in the H295R cell line

ABSTRACT: Effect of FSCN1 gene inactivation in the H295R cell line

PROVIDER: PRJNA891702 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21949245_1.fastq.gz	Fastqsanger.gz
	SRR21949245_2.fastq.gz	Fastqsanger.gz
	SRR21949246_1.fastq.gz	Fastqsanger.gz
	SRR21949246_2.fastq.gz	Fastqsanger.gz
	SRR21949247_1.fastq.gz	Fastqsanger.gz

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Effect of FSCN1 gene inactivation in the H295R cell line

Project description:The actin-bundling protein fascin (FSCN1) is overexpressed in aggressive adrenocortical carcinoma (ACC) and represents a reliable prognostic indicator. We investigated the effects of FSCN1 inactivation by CRISPR/Cas9 in ACC H295R cells on global gene expression profiles in those cells. We performed gene expression profiling analysis using data obtained from RNA-seq of 2 different H295R control clones and 2 different FSCN1 KO clones (2 biological replicates for each clone).

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Project description:Adrenocortical carcinoma (ACC) is a rare endocrine malignancy with a high risk of relapse and metastatisation. The actin-bundling protein fascin (FSCN1) is overexpressed in aggressive ACC and represents a reliable prognostic indicator. FSCN1 has been shown to synergize with the Rho/Rac GEF VAV2 in enhancing the invasion properties of ACC cancer cells. Based on those results, we investigated the effects of FSCN1 inactivation by CRISPR/Cas9 or pharmacological blockade on the invasive properties of ACC cells, both in vitro and in an in vivo metastatic ACC zebrafish model. Here we showed that FSCN1 is a transcriptional target for Beta-catenin in H295R ACC cells and that its inactivation resulted in defects in cell attachment and proliferation. Additionally, FSCN1 knock-out modulated the expression of genes involved in cytoskeleton dynamics and cell adhesion. When SF-1 dosage was upregulated in H95R cells, activating their invasive capacities, FSCN1 knock-out reduced the number of filopodia, lamellipodia/ruffles and focal adhesions, while decreasing cell invasion in Matrigel. Similar effects were produced by the FSCN1 inhibitor G2-044, which also diminished the invasion of ACC cell lines (CU-ACC2, JIL-2266, MUC-1) expressing lower levels of FSCN1 than H295R. In the zebrafish model, metastases formation was significantly reduced in FSCN1 knock-out cells and G2-044 significantly reduced the number of metastases formed by ACC cells. Our results indicate that FSCN1 represents a new druggable target for ACC and provide the rationale for future clinical trials with FSCN1 inhibitors in patients with ACC, possibly in combination with immunotherapy.

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