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鱼皮肤特异性基因模块的衰变

Bernardo Pinto^1,2, Raul Valente^1,2, Filipe Caramelo^1,2

¹CIMAR/CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal.

Journal of molecular evolution

|May 30, 2023

概括

潘戈林的通过基因丢失而进化,影响了脂质的产生和皮肤屏障的功能. 这项研究揭示了哺乳动物皮肤适应的复杂基因进化.

科学领域:

进化生物学是进化的生物学.
哺乳动物皮肤生理学
基因组学就是基因组学.

背景情况:

哺乳动物的皮肤表现出多样化的进化适应,其pilosebaceous单位是一个关键特征.
长毛动物 (Pholidota) 拥有独特的角质,但脂质腺和汗腺的存在是有争议的.
了解松鼠皮肤的进化为哺乳动物适应提供了洞察力.

研究的目的:

通过基因组数据,研究松鼠皮肤生理学和皮脂生产的分子基础.
为了识别与松鼠进化中的皮肤修饰相关的基因保留和损失事件.
为了比较鱼皮肤基因进化与其他哺乳动物.

主要方法:

对四个松鼠基因组进行比较基因组分析.
检查参与脂质生产的基因 (Awat1/2,Dgat2l6).
分析与皮肤屏障功能 (Elovl3) 和病原体防御相关的基因.

主要成果:

形成单的基因 (Awat1/2) 在鱼中被禁用.
三糖醇合成基因 (Dgat2l6) 在亚洲和非洲的松鼠群中显示出独立的侵蚀.
皮肤屏障 (Elovl3) 和病原体防御的基因表现出失活突变.
结合ATP的磁带输送器Abcc11显示没有失活,与汗腺缺失的预期相反.

结论:

基因丢失和保留是鱼皮肤和的进化中的关键机制.
长的皮肤修饰,包括的发育,与特定的基因失活事件有关.
这项研究澄清了独特的松鼠皮肤表型和进化途径的遗传基础.

关键词:

基因丢失基因丢失豁免权是一种豁免权.脂 (sebum) 是一种脂.皮肤皮肤皮肤皮肤汗腺是什么? 汗腺是什么?

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