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形态基因穿电路的重建

Ronghui Zhu¹, Leah A Santat¹, Joseph S Markson¹

¹Howard Hughes Medical Institute and Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA.

Science advances

|July 12, 2023

概括

细胞外电路,包括Chordin和Twsg,可以积极"穿"骨形态遗传蛋白 (BMP) 配体,以控制发育模式. 这种穿机制在各种物种中得到保护,揭示了形态原体信号传递的基本原理.

科学领域:

发育生物学是发展生物学.
分子生物学分子生物学
系统生物学系统生物学

背景情况:

发育中的组织依赖于形态原梯度来形成模式.
骨形态遗传蛋白 (BMP) 信号通路利用细胞外调节器进行梯度调节.
形态转移的精确机制和进化保护仍然不完全理解.

研究的目的:

调查不同细胞外电路是否足以实现形态原体的穿.
探索这些电路可以生成的空间模式的范围.
为了确定形态转移是否是一种进化保存的过程.

主要方法:

采用合成的自下而上的方法来比较各种细胞外电路的时空动态.
测试了特定蛋白质 (Chordin,Twsg,BMP-1蛋白酶) 的能力,以测试它们是否能够取代形态原梯度.
数学建模被用来解释观察到的空间动态.
进行了跨物种组分分析 (哺乳动物和虫).

主要成果:

科尔丁,Twsg和BMP-1蛋白酶通过将连接物远离它们的生产地点来取代形态原梯度的能力.
一个数学模型成功地阐明了不同穿电路的独特空间动态.
结合哺乳动物和Drosophila组件表明,穿是一种保存的能力.

结论:

细胞外电路具有通过连接物穿来积极控制形态原梯度动态的能力.
这项研究揭示了管理细胞外成分如何塑造时空信号模式的基本原则.
形态基因的穿代表了不同物种发育模式的保存机制.

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