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The Microbiota of Long-Living And Cancer-Free Blind Mole Rat (Nannospalax Xanthodon) From The Edge of its Distribution in Northern Anatolia

ABSTRACT: Gut microbiota of Blind Mole Rat (Nannospalax Xanthodon)

PROVIDER: PRJEB61312 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR11219705_1.fastq.gz	Fastqsanger.gz
	ERR11219705_2.fastq.gz	Fastqsanger.gz
	ERR11219706_1.fastq.gz	Fastqsanger.gz
	ERR11219706_2.fastq.gz	Fastqsanger.gz
	ERR11219707_1.fastq.gz	Fastqsanger.gz

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Transposon-triggered innate immune response confers cancer resistance to the blind mole rat [seq]

Project description:Blind mole rats (BMRs) are small rodents, characterized by exceptionally long lifespan (> 21 years) and resistance to both spontaneous and induced tumorigenesis. Here we report that cancer resistance in the BMR is mediated by retrotransposable elements (RTEs). BMR cells and tissues express very low levels of DNA methyltransferase 1 (DNMT1). Upon cell hyperplasia, the BMR genome DNA loses methylation, resulting in activation of RTEs. Up-regulated RTEs form cytoplasmic RNA/DNA hybrids, which activate cGAS-STING pathway to induce cell death. Although this mechanism is enhanced in the BMR, we show that it functions in mice and human. We propose that RTEs were coopted to serve as tumor suppressors that monitor cell proliferation and are activated in premalignant cells to trigger cell death via activation of innate immune response. RTEs activation is a double-edged sword, serving as a tumor suppressor but in late life contributing to aging via induction of sterile inflammation.

2021-09-09 | GSE181413 | GEO