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MiRNA expression data from 39 leiomyosarcomas [miRNA-seq]

ABSTRACT: miRNA expression data from 39 leiomyosarcomas [miRNA-seq]

PROVIDER: PRJNA670671 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12878643.fastq.gz	Fastqsanger.gz
	SRR12878644.fastq.gz	Fastqsanger.gz
	SRR12878645.fastq.gz	Fastqsanger.gz
	SRR12878646.fastq.gz	Fastqsanger.gz
	SRR12878647.fastq.gz	Fastqsanger.gz

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miRNA expression data from 39 leiomyosarcomas [miRNA-seq]

Project description:Based on the transcriptome analysis of 555 sarcomas, we identified a group of tightly clustered leiomyosarcomas (LMS) due to their gene expression homogeneity. We named them “hLMS” and the other LMS “oLMS”. We derived a transcriptional signature able to identify each group and used it to classify patients from two independent cohorts. In all cohorts, hLMS were preferentially carried by women, located in the internal trunk, highly differentiated, and similarly altered at the genomic level. Particularly, miRNA from 39 leiomyosarcomas (LMS) classified as homogeneous and other LMS according to a mRNA transcriptional signature were sequenced, mapped to mature miRNA sequences and analysed in order to evaluate miRNA impact on LMS biology and oncology. Based on integrative bioinformatic analysis, we show that hLMS originate from vascular smooth muscle cells presenting both contractile and synthetic characteristics, while oLMS could derive from fibroblasts. We found strong MYOCD expression to be an hLMS-specific driver and show that the MYOCD/SRF axis is essential only for hLMS survival. Identification of hLMS could become standard clinical practice, leading to the development of specific effective treatments with MYOCD/SRF inhibitors.

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