在阿尔茨海默病中TAS2R38-Linked MGAM表达:精确药物重定位的新目标
Claire W Su1, Kewei Chen2, Teresa Wu1
1School of Computing and Augmented Intelligence, Arizona State University, Tempe, AZ, 85287, USA.
medRxiv : the preprint server for health sciences
|November 19, 2025
概括
在TAS2R38味觉受体中的遗传变异与较低的阿尔茨海默病 (AD) 风险有关. 这表明MGAM,一种受TAS2R38影响的基因,可能是AD治疗的新药标.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 药理学 药理学是指药理学的学科.
背景情况:
- TAS2R38基因编码了一种参与天生的免疫力的味道受体.
- 阿尔茨海默病 (AD) 的发病过程复杂,遗传因素起着重要作用.
- 识别新的遗传关联可能会导致AD的新治疗策略.
研究的目的:
- 为了研究TAS2R38变体与阿尔茨海默病风险之间的遗传关系.
- 探索这种关联背后的分子机制.
- 评估针对已识别的AD治疗途径的现有药物的潜力.
主要方法:
- 使用线性混合效应模型与阿尔茨海默病神经成像计划 (ADNI) 的数据来评估AD风险和TAS2R38变体.
- 使用来自ROSMAP研究的RNA测序数据来识别分子机制研究的表达定量特征位点 (eQTL).
- 在国家阿尔茨海默氏症协调中心 (NACC) 研究中应用倾向性得分匹配,以比较服用MGAM抑制药物的患者与对照者的认知结果.
主要成果:
- 随着年龄的增长,TAS2R38超级品尝器变种与AD风险降低和AD生物标志物改善有关.
- eQTL分析揭示了TAS2R38 nontaster等位基因与AD受影响的大脑区域MGAM基因表达增加之间的联系.
- 服用MGAM抑制糖尿病药物 (Acarbose,Miglitol) 的个人与不服用者相比,显示出明显不同的临床痴呆症评级进展.
结论:
- TAS2R38和AD生物标志物之间的遗传联系突出了MGAM作为潜在的治疗点.
- 现有的FDA批准的MGAM抑制剂显示出在AD治疗策略中重新定位的希望.
- 在阿尔茨海默病中,TAS2R38单元类型可能指导精准医学方法.
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