结合人类遗传和功能选的证据,以确定改变肥胖和脂肪分布的途径
medRxiv : the preprint server for health sciences
|October 7, 2024
概括
这项研究使用英国生物银行数据确定了69个与身体脂肪特征相关的基因. 脂肪细胞的功能研究揭示了通过改变脂质积累来治疗肥胖的新方法.
科学领域:
- 遗传学 是一个遗传学.
- 代谢性疾病 代谢性疾病
- 肥胖问题研究研究
背景情况:
- 身体脂肪分布和整体脂肪是遗传的,影响心脏代谢疾病的风险.
- 罕见的遗传变异在这些复杂的特征中起作用,但它们的影响尚未完全理解.
研究的目的:
- 通过罕见变异关联测试,识别与身体脂肪分布和整体脂肪度相关的基因.
- 通过评估它们在人类白色脂肪组织中脂质积累中的作用来功能验证候选基因.
主要方法:
- 分析了来自402,375名英国生物库参与者的外体序列数据,以寻找与9个脂肪分布特征的罕见变异关联.
- 具有显著罕见变异关联的基因被优先考虑用于使用CRISPR-Cas9基因编辑在人类白色脂肪组织细胞系中的功能研究.
- 测量了基因敲击细胞系中的脂质积累,以评估细胞表型.
主要成果:
- 19个基因在邦费罗尼校正的P<1.58×10^-7时显示出与脂肪特征的显著关联,FDR ≤1%时还有50个额外的基因.
- 在脂肪组织细胞系中的功能验证表明,COL5A3,EXOC7和TRIP10的淘汰会增加脂质积累,而PPARG和SLTM的淘汰会减少脂质积累.
- 这些发现将人口遗传学与体外功能数据相结合,突出显示肥胖的潜在治疗点.
结论:
- 罕见的遗传变异对身体脂肪分布和脂肪性有显著的贡献.
- 这项研究确定了参与肥胖相关的脂质代谢的新基因和途径.
- 通过COL5A3,EXOC7,TRIP10,PPARG和SLTM等已识别的基因准脂质积累,为肥胖和身体脂肪分布提供了潜在的治疗策略.
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