Involvement of headless myosin X in the motility of immortalized gonadotropin-releasing hormone neuronal cells.

Involvement of headless myosin X in the motility of immortalized gonadotropin-releasing hormone neuronal cells.
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DOI:
10.1016/j.cellbi.2009.02.006
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发表时间:
2009-05
影响因子:
3.9
通讯作者:
Zhu, Xiao-Juan
Zhu, Xiao-Juan
中科院分区:
生物学4区
文献类型:
--
作者:
Wang, Jun-Jie;Fu, Xiu-Qing;Guo, Yu-Guang;Yuan, Lin;Gao, Qian-Qian;Yu, Hua-Li;Shi, Heng-Liang;Wang, Xing-Zhi;Xiong, Wen-Cheng;Zhu, Xiao-Juan

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肌球蛋白X(Myo X)是一种非常规的肌球蛋白,具有尾部同源性4带4.1/ezrin/radixin/moesin(MyTH 4-FERM)尾部,广泛表达于各种哺乳动物组织中。除了全长Myo X(Myo X FL),大脑中还合成了无头形式。到目前为止,人们对这款无马达Myo X的功能知之甚少。在这项研究中,无头Myo X的作用在永生化促性腺激素释放激素(GnRH)神经元细胞,NLT中进行了研究。与野生型NLT细胞和表达GFP的NLT细胞相比,过表达无头Myo X的NLT细胞形成较少的粘着斑,并且扩散更慢。在化学迁移试验中,与对照NLT细胞相比,过表达无头Myo X的NLT细胞迁移距离更短,迁移细胞更少。
Myosin X (Myo X), an unconventional myosin with a tail homology 4-band 4.1/ezrin/radixin/moesin (MyTH4-FERM) tail, is expressed ubiquitously in various mammalian tissues. In addition to the full-length Myo X (Myo X FL), a headless form is synthesized in the brain. So far, little is known about the function of this motor-less Myo X. In this study, the role of the headless Myo X was investigated in immortalized gonadotropin-releasing hormone (GnRH) neuronal cells, NLT. NLT cells overexpressing the headless Myo X formed fewer focal adhesions and spread more slowly than the wild-type NLT cells and GFP-expressing NLT cells. In chemomigration assays, the NLT cells overexpressing the headless Myo X migrated shorter distances and had fewer migratory cells compared with the control NLT cells.
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