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毛囊在小鼠出生结构缺陷中的自主和非细胞自主作用

Richard J B Francis^1,2, Jovenal T San Agustin³, Heather L Szabo Rogers^1,4

¹Department of Developmental Biology, University of Pittsburgh, Rangos Research Center, Pittsburgh, Pennsylvania, United States of America.

|December 11, 2023

概括

皮对于发育至关重要. 这项研究揭示了IFT140蛋白质.

科学领域:

发展生物学发展生物学
细胞生物学细胞生物学
遗传学遗传学是一个

背景情况:

乳毛病,与乳毛功能障碍相关的疾病,导致各种结构性出生缺陷 (SBDs).
像IFT140一样,内运输 (IFT) 蛋白质对于乳毛形成和发育过程中的功能至关重要.
了解在SBD中的精确作用对于识别发育机制至关重要.

研究的目的:

调查的时空需求,特别是IFT140,在结构性出生缺陷的发展.
为了阐明细胞和血统特异性对SBDs的贡献,如果没有功能性Ift140.0.

主要方法:

在小鼠中使用一种可诱导他莫西芬的Cre-lox系统,在特定发育阶段 (E5.5-9.5) 条件删除IFT140基因.
在Ift140缺乏的小鼠中分析了广泛的结构性出生缺陷,包括面,心脏和身体壁的异常.
采用基因特异的Cre驱动器 (Wnt1-Cre,Tbx18-Cre) 来评估IFT140在特定细胞类型中的细胞自主与非细胞自主作用.

主要成果:

缺少IFT140会导致广泛的SBD,包括巨肠瘤,脑外,气管食管,先天性心脏缺陷和多头.
有条件的删除揭示了IFT140在心脏循环,隔离,面发育和身体壁闭合中的特定阶段的要求.
面和身体壁的缺陷与神经细胞-自主乳毛功能有关,而先天性心脏缺陷涉及多个血统相互作用.

结论:

由Ift140调节的乳头,在神经介导的面结构和身体壁闭合的发展中发挥关键的细胞自主作用.
与Ift140缺乏相关的先天性心脏缺陷是由于心脏发育过程中跨多个细胞系的复杂非细胞自主相互作用引起的.
这项研究强调了在预防结构性出生缺陷方面的复杂和多方面的作用,不同类型的异常背后有着不同的机制.

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