对于GATM表达的他类药物依赖的QTL与他类药物诱导的肌病相关
Lara M Mangravite1, Barbara E Engelhardt, Marisa W Medina
1Sage Bionetworks, 1100 Fairview Avenue North, Seattle, Washington 98109, USA. lara.mangravite@sagebase.org
Nature
|September 3, 2013
概括
达类药物降低胆固醇,但可能导致肌肉病变. 发现了一种涉及GATM基因的遗传联系,这可能解释了他类药物诱导的肌肉损伤,并提供了新的治疗点.
科学领域:
- 药物基因组学 药物基因组学
- 分子生物学分子生物学
- 心血管疾病研究研究
背景情况:
- 类药物被广泛使用,以减少低密度脂蛋白 (LDL) 和心血管疾病 (CVD) 的风险.
- 尽管有好处,但他类药物存在诸如肌肉病和2型糖尿病等风险.
- 影响他类药物反应的遗传因素尚不清楚,这限制了个性化治疗.
研究的目的:
- 为了确定他类药物治疗的下游目标.
- 研究调节他类药物反应和毒性的遗传变异.
- 探索将他类药物使用与肌肉病相关联的机制.
主要方法:
- 查基因表达变化,以应对体外他类药物暴露.
- 从他类药物试验参与者的淋巴细胞细胞系中分析基因关联与基因表达.
- 使用细胞模型调查已识别的基因在他类药物诱导的肌肉毒性中的作用.
主要成果:
- 已经确定了与simvastatin相互作用的六个表达定量特征位点 (eQTL).
- 糖氨酸氨基转移酶 (GATM) 基因的cis-eQTL,rs9806699,与降低的他类药物诱导的肌肉毒性有关.
- GATM敲击损害了细胞对固醇枯竭的反应,这表明它在胆固醇代谢和肌肉病症中发挥了作用.
结论:
- GATM基因是他类药物治疗的下游目标,也是他类药物诱导肌肉病的潜在调解者.
- 在GATM中的遗传变异可能会影响对他类药物诱导的肌肉毒性的敏感性.
- GATM代表了胆固醇调节和他类药物的副作用之间的功能联系.
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