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Sci Rep:miR-214在软骨发生中的新作用

2018-03-15 MedSci MedSci原创

已知miR-214通过抑制骨生成和刺激破骨细胞生成在哺乳动物的骨骼发育中发挥作用,但关于其他脊椎动物的研究以及软骨形成中的可能作用仍未知。 在这里,骨和斑马鱼骨架软骨中检测miR-214的表达,并在小鼠ATDC5软骨细胞分化过程中下调。此外,我们观察到脊椎动物中miR-214初级转录物Dnm3os的转录调控保守性,受到ATDC5软骨细胞中Ets1的调控。此外,体外和体内过表达miR-214可

已知miR-214通过抑制骨生成和刺激破骨细胞生成在哺乳动物的骨骼发育中发挥作用,但关于其他脊椎动物的研究以及软骨形成中的可能作用仍未知。

在这里,骨和斑马鱼骨架软骨中检测miR-214的表达,并在小鼠ATDC5软骨细胞分化过程中下调。此外,我们观察到脊椎动物中miR-214初级转录物Dnm3os的转录调控保守性,受到ATDC5软骨细胞中Ets1的调控。此外,体外和体内过表达miR-214可能通过靶向激活转录因子4(Atf4)减轻软骨细胞分化。实际上,体内miR-214过表达阻碍了斑马鱼的颅软骨形成,并与atf4和关键软骨形成参与者sox9和col2a1的下调相一致。

综上所述,该研究结果表明,miR-214过表达可能通过保守机制影响软骨细胞分化在软骨形成中发挥负面作用。

原始出处:

Roberto VP, Gavaia P, et al., Evidences for a New Role of miR-214 in Chondrogenesis. Sci Rep. 2018 Feb 27;8(1):3704. doi: 10.1038/s41598-018-21735-w.

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    2018-04-08 smallant2002
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