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在胚胎发生过程中,在神经肌肉结处的亚突触肌核的转录组概况

Bisei Ohkawara¹, Masaomi Kurokawa², Akinori Kanai³

¹Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan.

Journal of neurochemistry

|November 23, 2023

概括

这项研究揭示了胚胎小鼠在神经肌肉结 (NMJ) 形成过程中明显的基因表达模式. 它强调了Wnt/β-catenin信号在NMJ发育和成熟中的协调作用.

科学领域:

发展生物学发展生物学
神经科学是一个神经科学.
遗传学遗传学是一个

背景情况:

神经肌肉结 (NMJ) 对于肌肉功能至关重要,成年亚突触神经核表达特定的基因进行维护.
引导胚胎NMJ形成的基因表达特征在很大程度上是未知的.

研究的目的:

探索胚胎和新生儿小鼠膜膜NMJ形成期间的基因表达模式.
确定关键的基因和参与NMJ发育的信号通路.

主要方法:

胚胎和新生儿小鼠膜的单核RNA测序 (snRNA-seq).
在myonuclei中的基因表达特征的分析.
在C2C12神经细胞中进行 Knockdown 实验,以评估基因功能.

主要成果:

在NMJ形成期间,在线核中观察到明显的转录组模式.
他们确定了特定的基因 (Dok7,Chrna1,Chrnd) 和β-catenin调节器 (Amotl2,Ptprk,Fam53b,TCf7l2).
Amotl2和Ptprk在乙胆受体聚类中发挥作用,而Fam53b和TCf7l2通过Slit2表达影响运动神经元内置.
Wnt/β-catenin信号传递与NMJ形成有关.

结论:

snRNA-seq揭示了胚胎NMJ形成中的新型协调基因表达.
Wnt/β-catenin信号通路是胚胎NMJ发育的关键调节者.
鉴定出了sarcoplasmic和核β-catenin调节者的不同作用.

关键词:

没有信号发送.这是一个myonucleus核.肌结节肌结节的结节神经肌肉结节是一个神经肌肉结节.这是骨肌肉的骨架肌肉.这是β-catenin.

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