Myosin-X is required for cranial neural crest cell migration in Xenopus laevis.

Myosin-X is required for cranial neural crest cell migration in Xenopus laevis.
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DOI:
10.1002/dvdy.22077
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发表时间:
2009-10
影响因子:
2.5
通讯作者:
Sargent, Thomas D.
Sargent, Thomas D.
中科院分区:
生物学3区
文献类型:
--
作者:
Hwang, Yoo-Seok;Luo, Ting;Xu, Yanhua;Sargent, Thomas D.

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Myosin-X (MyoX)属于一个非传统的、非肌肉的、肌动蛋白依赖的运动蛋白大家族。我们发现MyoX主要在非洲爪蟾胚胎的颅神经嵴(CNC)细胞中表达,并且是头和颚软骨发育所必需的。使用反义morpholino寡核苷酸敲低MyoX的表达,导致CNC细胞向咽弓的迁移迟缓,导致随后的软骨发育不良,并抑制CNC来源的三叉神经的生长。体外移植CNC细胞的纤维连接蛋白迁移实验显示,丝状伪足形成、细胞附着、扩散和迁移受到显著抑制,同时肌动蛋白细胞骨架受到破坏。这些数据支持MyoX在脊椎动物胚胎的CNC迁移中具有重要功能的结论。
Myosin-X (MyoX) belongs to a large family of unconventional, non-muscle, actin-dependent motor proteins. We show that MyoX is predominantly expressed in cranial neural crest (CNC) cells in embryos of Xenopus laevis and is required for head and jaw cartilage development. Knockdown of MyoX expression using antisense morpholino oligonucleotides resulted in retarded migration of CNC cells into the pharyngeal arches, leading to subsequent hypoplasia of cartilage and inhibited outgrowth of the CNC-derived trigeminal nerve. In vitro migration assays on fibronectin using explanted CNC cells showed significant inhibition of filopodia formation, cell attachment, spreading and migration, accompanied by disruption of the actin cytoskeleton. These data support the conclusion that MyoX has an essential function in CNC migration in the vertebrate embryo.
DOI: 10.1083/jcb.111.5.1949
发表时间: 1990-11
期刊: The Journal of cell biology
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