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多种祖先的TWAS将TREML2确定为与阿尔茨海默病 (AD) 相关的基因. 升高的TREML2表达可能会促进微质中的炎症,这表明它是AD的治疗点.

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科学领域:

  • 遗传学 遗传学是一种遗传学.
  • 神经科学是一个神经科学.
  • 基因组学就是基因组学.

背景情况:

  • 全转录组关联研究 (TWAS) 将基因表达与遗传数据相结合,以了解非编码变异函数.
  • 阿尔茨海默病 (AD) 研究从多祖先方法中受益,以确定不同人群中的遗传关联.
  • 阿尔茨海默氏症多祖先基因组学,表观基因组学和转录基因组学 (MAGENTA) 项目为这项研究提供了关键数据.

研究的目的:

  • 使用多祖先TWAS方法识别与阿尔茨海默病 (AD) 相关的基因.
  • 利用MAGENTA项目的多样化的数据集,包括非洲裔美国人,欧洲人和西班牙裔祖先.
  • 探索遗传变异对与AD有关的基因表达的功能后果.

主要方法:

  • 应用共享单一效应总和 (SuShiE) 识别影响跨祖先基因表达的变异.
  • 利用MA-FOCUS (因果基因组的多祖先精细映射) 来精细映射基因组风险地区的TWAS关联.
  • 分析了224名非裔美国人,235名欧洲人和298名西班牙裔人的全血表达和基因型数据,并对相关共变量进行了调整.

主要成果:

  • 确定了五个与AD相关的基因,TREML2在所有三个祖先群体中都与AD一致相关.
  • TREML2的关联是强大的,通过SSW元分析 (FDR < 0.1) 和MA-FOCUS后部包含概率 (PIP = 0.88) 得到证实.
  • 在非洲裔美国人,欧洲人和西班牙裔祖先中观察到TREML2的一致的积极效应尺寸方向.

结论:

  • 多祖先TWAS对于揭示AD发展中的遗传机制至关重要.
  • 增加TREML2表达可能会促进AD的微质炎症和扩散效应.
  • 在阿尔茨海默病研究中,TREML2是一个潜在的治疗标,需要进一步研究.