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Gut microbiota regulates tumor via circRNA/miRNA networks

ABSTRACT: Gut microbiota regulates tumor via circRNA/miRNA networks

PROVIDER: PRJNA591205 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR10517950_1.fastq.gz	Fastqsanger.gz
	SRR10517950_2.fastq.gz	Fastqsanger.gz
	SRR10517951_1.fastq.gz	Fastqsanger.gz
	SRR10517951_2.fastq.gz	Fastqsanger.gz
	SRR10517952_1.fastq.gz	Fastqsanger.gz

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Gut microbiota regulates tumor via circRNA/miRNA networks II

Project description:Increasing evidence indicates that gut microbiota plays an important role in cancer progression. We have employed RNA-seq or microarray for genome including mRNA, microRNA or circRNA profiling in an gut microbiota -dependent manner, as a discovery platform to identify target genes with the potential to involve in tumor regulation. The deep sequencing analysis reveals regulatory functions of microbiota-mediated circular RNA (circRNA)/microRNA networks that may contribute to cancer progression.

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Gut microbiota regulate tumor metastasis via circRNA/miRNA networks.

Project description:BackgroundIncreasing evidence indicates that gut microbiota plays an important role in cancer progression. However, the underlying mechanism remains largely unknown. Here, we report that broad-spectrum antibiotics (ABX) treatment leads to enhanced metastasis by the alteration of gut microbiome composition.MethodsCancer LLC and B16-F10 cell metastasis mouse models, and microarray/RNA sequencing analysis were used to reveal the regulatory functions of microbiota-mediated circular RNA (circRNA)/microRNA (miRNA) networks that may contribute to cancer metastasis.ResultsThe specific pathogen-free (SPF) mice with ABX treatment demonstrated enhanced lung metastasis. Fecal microbiota transplantation (FMT) from SPF mice or Bifidobacterium into germ-free mice significantly suppressed lung metastasis. Mechanistically, gut microbiota impacts circRNA expression to regulate levels of corresponding miRNAs. Specifically, such modulations of gut microbiota inhibit mmu_circ_0000730 expression in an IL-11-dependent manner. Bioinformatics analysis combined with luciferase reporter assays revealed reciprocal repression between mmu_circ_0000730 and mmu-miR-466i-3p. We further showed that both mmu-miR-466i-3p and mmu-miR-466 f-3p suppresses a number of genes involved in epithelial-mesenchymal transition (EMT) and stemness of cancer stem cells such as SOX9.ConclusionsThese results provide evidence of a previously unrecognized regulatory role of non-coding RNAs in microbiota-mediated cancer metastasis, and thus, the microbiome may serve as a therapeutic target.

| S-EPMC7524358 | biostudies-literature

Gut microbiota regulates tumor via circRNA/miRNA networks

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

2020-10-13 | GSE140887 | GEO