Acetylcholine induces mesenchymal stem cell migration via Ca2+ /PKC/ERK1/2 signal pathway.

Acetylcholine induces mesenchymal stem cell migration via Ca2+ /PKC/ERK1/2 signal pathway.
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乙酰胆碱通过 Ca2 /PKC/ERK1/2 信号通路诱导间充质干细胞迁移。

DOI:
10.1002/jcb.24148
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发表时间:
2012-08
影响因子:
4
通讯作者:
Chen, Shi-You
Chen, Shi-You
中科院分区:
生物学2区
文献类型:
--
作者:
Tang, Jun-Ming;Yuan, Jie;Li, Qing;Wang, Jia-Ning;Kong, Xia;Zheng, Fei;Zhang, Lei;Chen, Long;Guo, Lin-Yun;Huang, Yong-Hang;Yang, Jian-Ye;Chen, Shi-You

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乙酰胆碱(Acetylcholine, ACh)在神经和非神经功能中发挥重要作用,但其在间充质干细胞(mesenchal stem cell, MSC)迁移中的作用尚不清楚。在本研究中,我们发现乙酰胆碱通过毒蕈碱乙酰胆碱受体(mAChRs)诱导MSC迁移。在多种mAChR中,MSCs表达mAChR亚型1 (m1AChR)。ACh通过与mAChR1相互作用诱导MSC迁移。MEK1/2抑制剂PD98059阻断ERK1/2磷酸化,同时部分抑制ach诱导的MSC迁移。抑制MAPK/ERK磷酸化的InsP3Rs抑制剂2-APB完全阻断ach介导的MSC迁移。有趣的是,细胞内Ca2+ atp酶特异性抑制剂thapsigargin也通过消耗细胞内Ca2+储存完全阻断ach诱导的MSC迁移。PKCα或PKCβ抑制剂或其siRNA仅部分抑制ach诱导的MSC迁移,但PKC-ζ siRNA通过阻断ERK1/2磷酸化完全抑制ach诱导的MSC迁移。这些结果表明,ACh通过Ca2+、PKC和ERK1/2信号通路诱导MSC迁移。
Acetylcholine (ACh) plays an important role in neural and non-neural function, but its role in mesenchymal stem cell (MSC) migration remains to be determined. In the present study, we have found that ACh induces MSC migration via muscarinic acetylcholine receptors (mAChRs). Among several mAChRs, MSCs express mAChR subtype 1 (m1AChR). ACh induces MSC migration via interaction with mAChR1. MEK1/2 inhibitor PD98059 blocks ERK1/2 phosphorylation while partially inhibiting the ACh-induced MSC migration. InsP3Rs inhibitor 2-APB that inhibits MAPK/ERK phosphorylation completely blocks Ach-mediated MSC migration. Interestingly, intracellular Ca2+ ATPase specific inhibitor thapsigargin also completely blocks ACh-induced MSC migration through the depletion of intracellular Ca2+ storage. PKCα or PKCβ inhibitor or their siRNAs only partially inhibit ACh-induced MSC migration, but PKC-ζ siRNA completely inhibits ACh-induced MSC migration via blocking ERK1/2 phosphorylation. These results indicate that ACh induces MSC migration via Ca2+, PKC and ERK1/2 signal pathways.
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