miR-221-3p Inhibits Schwann Cell Myelination

miR-221-3p Inhibits Schwann Cell Myelination
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miR-221-3p 抑制雪旺细胞髓鞘形成

DOI:
10.1016/j.neuroscience.2018.03.019
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发表时间:
2018-05
期刊:
影响因子:
3.3
通讯作者:
Zhou Songlin
Zhou Songlin
中科院分区:
医学3区
文献类型:
--
作者:
Zhao Lili;Yuan Ying;Li Ping;Pan Jiacheng;Qin Jing;Liu Yisheng;Zhang Yu;Tian Feng;Yu Bin;Zhou Songlin

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周围神经损伤后,雪旺细胞(SCs)经历去分化、增殖、迁移和重新髓鞘形成。最近的研究表明,短非编码RNA(MiRNAs)在神经损伤后SC去分化和重新髓鞘形成过程中具有重要作用。此前,我们发现一些miRNAs如miR-9、miR-221、miR-222和miR-182可以调节SCs的增殖和迁移。因此,有必要探讨这些miRNAs是否能调控干细胞的髓鞘形成。在此,我们证明了miR-221-3p在体外与背根神经节细胞共培养时能抑制SCs的髓鞘形成。此外,对干细胞髓鞘形成至关重要的NGF1-A结合蛋白1(Nab1)可被miR-221-3p下调。抑制Nab1的表达可逆转miR-221-3对SC髓鞘形成的促进作用。MiR-221-3pon对SC髓鞘形成的影响可能被用于促进周围神经再生,从而为周围神经修复提供新的途径。
Following peripheral nerve injury, Schwann Cells (SCs) undergo dedifferentiation, proliferation, migration, and remyelination. Recent works demonstrated the importance of the short non-coding RNA (miRNAs) in SC dedifferentiation and remyelination after nerve injury. Previously, we found some miRNAs likemiR-9,miR-221,miR-222andmiR-182could regulate the proliferation and migration of SCs. Therefore, it is imperative to ask whether these miRNAs could regulate the myelination of SCs. Here we demonstrated thatmiR-221-3pcould inhibit the myelination of SCs when co-cultured with dorsal root ganglion cellsin vitro. In addition, NGF1-A binding protein 1 (Nab1) which was essential for SCs myelination could be downregulated bymiR-221-3p. Suppressing the expression of Nab1 could reverse the promotion ofmiR-221-3pantagomir on SC myelination. The effects ofmiR-221-3pon SC myelination might be used to improve peripheral nerve regeneration, thus offering a new approach to peripheral nerve repair.
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