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个人间附带血管丰度的巨大差异源于多种遗传变异
bioRxiv : the preprint server for biology
|July 3, 2023
概括
遗传变异显著影响附带血流和中风损伤. 研究人员使用协作十字鼠标面板确定了影响附带丰富性的新型基因,提供了关于血管发育和不足的见解.
科学领域:
- 遗传学 是一个遗传学.
- 心血管生物学 心血管生物学
- 血管新生的产生.
背景情况:
- 副作用血流对于预防缺血组织损伤至关重要,在人类中由于不明确的遗传因素而表现出显著的个体间差异.
- 附带生成,形成附带血管的发育过程,在小鼠中显示了基因背景依赖的变异,影响成人附带血管的数量和直径.
- 之前的定量特征位点 (QTL) 研究是通过使用不反映人类遗传多样性的内生小鼠菌株来限制的.
研究的目的:
- 在多样化的小鼠群体中调查附带丰富性和直径变化的遗传决定因素.
- 使用协作交叉 (CC) 鼠标遗传参考小组识别参与附带生成的候选基因和途径.
- 为了将抵押品的丰富与中风的结果相关联,并确定影响抵押品不足的遗传变异.
主要方法:
- 在60 CC菌株,创始菌株和F1/交叉种群中测量脑附带细胞数量和直径.
- 进行全基因组映射以确定与附带丰富性相关的QTL.
- 分析了功能丧失多态 (SNP) 的高优先级候选基因及其人类正义基因.
主要成果:
- 附带数显示CC菌株的变化为47倍,与中风后心脏病发作量有很强的相关性.
- 全基因组映射发现了6个与低附带数相关的新型QTL,涉及28个具有功能丧失SNP的候选基因.
- 在人体骨科和32个无编码变异的血管发育基因中确定了335个预测有害的SNP.
结论:
- 附带丰富性是一种高度多态的特征,受遗传因素的影响.
- 这项研究提供了一个全面的候选基因组,用于研究附带产物发生路径.
- 这些发现为了解和解决对大脑和其他组织附带性缺陷的遗传贡献提供了潜在的目标.
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