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多祖先全基因组测序分析瘦肉体质量的分析

Xiaoyu Zhang¹, Kuan-Jui Su², Bodhisattwa Banerjee³

¹Department of Biostatistics, Boston University School of Public Health, Boston, MA, 02118, USA. xyzhang6@bu.edu.

|April 28, 2025

概括

这项研究使用全基因组测序来发现与瘦体质量相关的新基因. 它确定了新的遗传位置和基因,包括DMAC1,为肌肉新陈代谢和调节提供了洞察力.

科学领域:

遗传学是一个遗传学.
人体生理学人体生理学
身体组成身体构成

背景情况:

瘦身量 (LM) 是身体组成的关键组成部分,具有很高的遗传性.
以前的遗传研究主要集中在使用全基因组关联研究 (GWAS) 的常见变异上.
有限的研究已经利用全基因组测序 (WGS) 探索了LM的新型遗传决定因素.

研究的目的:

发现与瘦体质量 (LM) 相关的新型遗传变异.
扩大对影响LM的遗传因素的理解,超越常见变异.
在多样化,基于人口的队列中调查遗传关联.

主要方法:

进行了迄今为止最大的基于WGS的LM元分析.
包括来自六个TOPMed队列和路易斯安那骨质疏松症研究 (LOS) 的10,729个WGS样本.
采用双能X射线吸收计来测量LM,并进行罕见变异分析.

主要成果:

确定了七个与LM相关的全基因组新型基因位点,GWAS以前没有报告过.
发现了一种新的蛋白质编码基因,DMAC1,与女性全身和尾LM有关.
在雄性中确定了一种与尾LM相关的长非编码RNA基因,并在动物模型中研究了EMP2和SSUH2的功能作用.

结论:

大规模的WGS元分析揭示了新的基因组位置和影响瘦身质量的基因.
这些发现为肌肉新陈代谢和体重的遗传调节提供了新的见解.
这项研究扩大了对瘦体质量调节的遗传理解.

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