Sci Rep:人干细胞外囊泡中microRNA谱分析

2018-11-01 MedSci MedSci原创

已知细胞外囊泡(EV)参与干细胞维持、自我更新和分化。由于其生物活性产物影响细胞命运和功能,对再生医学中的EVs的兴趣迅速增加。EV来源的小非编码RNA模拟亲本干细胞的功能,调节干细胞的维持和分化,控制基因表达的细胞间调节,并最终影响细胞命运。本研究中,我们使用RNA测序来全面概述由人脂肪组织基质/干细胞(AT-MSC)和人多能干细胞(hPSCs)来源的EV携带的小非编码转录物的表达谱,人胚胎干细

已知细胞外囊泡(EV)参与干细胞维持、自我更新和分化。由于其生物活性产物影响细胞命运和功能,对再生医学中的EVs的兴趣迅速增加。EV来源的小非编码RNA模拟亲本干细胞的功能,调节干细胞的维持和分化,控制基因表达的细胞间调节,并最终影响细胞命运。本研究中,我们使用RNA测序来全面概述由人脂肪组织基质/干细胞(AT-MSC)和人多能干细胞(hPSCs)来源的EV携带的小非编码转录物的表达谱,人胚胎干细胞(hESCs)和人诱导的多能干细胞(hiPSC)。

对hPSCs和AT-MSCs进行了表征,并使用标准方案提取其EVs。来自EVs的小非编码RNA测序显示hPSC和AT-MSC显示出不同的谱,对于每种干细胞来源是独特的。有趣的是,在hPSCs中,最丰富的miRNA来自调节多能性,重编程和分化的特定miRNA家族(miR-17-92,mir-200,miR-302/367,miR-371/373,CM19miRNA簇)。对于AT-MSCs,高表达的miRNA被发现调节骨生成(let-7/98,miR-10/100,miR-125,miR-196,miR-199,miR-615-3p,mir-22-3p,mir-24-3p,mir-27a-3p,mir-193b-5p,mir-195-3p)。另外,在hPSCs中检测到丰富的小核和核仁RNA,而在AT-MSC中发现了Y-和tRNA。

总之,该研究鉴定这些干细胞释放的EV-miRNA和非编码RNA特征将为了解其在细胞内通讯中的作用以及它们在维持干细胞生态位中的作用提供线索。

原始出处:

Sippy Kaur, Ahmed G. Abu-Shahba, et al., Small non-coding RNA landscape of extracellular vesicles from human stem cells. Sci Rep. 2018; 8: 15503.

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    2019-07-15 xjy02
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    2018-11-03 zhouqu_8
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