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与铜的协同毒性有助于NAT2相关的异化毒性
Jihoon G Yoon1,2, Dong Geon Jang1, Sung-Gyu Cho3
1Department of Pharmacology, BK21 Project of Yonsei Advanced Medical Science, Woo Choo Lee Institute for Precision Drug Development, Yonsei University College of Medicine, Seoul, Republic of Korea.
Experimental & molecular medicine
|February 29, 2024
概括
遗传因素NAT2超缓慢的乙化剂和ATP7B 832R/R同糖性增加异化诱导的肝损伤风险. 组合的遗传缺陷放大了毒性,导致肝细胞损伤和亡.
科学领域:
- 药物基因组学 药物基因组学
- 肝病学 肝病学是一种肝病学.
- 分子毒理学 分子毒理学
背景情况:
- 药物诱导性肝损伤 (DILI) 来自抗肺结核 (AT) 药物,如异尼亚 (INH) 缺乏明确的机制理解.
- 遗传倾向被怀疑会影响个体对AT-DILI的敏感性.
研究的目的:
- 识别导致AT-DILI易感性的遗传因素.
- 为了研究导致异化物 (INH) 诱导的肝毒性遗传相互作用.
主要方法:
- 在发现队列 (112名患者) 中对380种药物基因进行有针对性的测序.
- 药物基因组范围的关联分析与人口对照 (韩国1K).
- 在单独的患者队列 (165名患者) 中对NAT2和ATP7B基因型的复制分析.
- 使用人类肝脏细胞系 (HepG2,SNU387) 的体外研究.
主要成果:
- 超慢NAT2乙化剂 (UA) 显示AT-DILI (OR 5.6) 的风险明显更高.
- 在AT-DILI患者中,ATP7B 832R/R同性与NAT2 UA同时发生,增加了风险 (OR 32.5).
- 在体外,INH和铜的协同作用导致严重的肝细胞损伤,线粒体功能障碍和亡,特别是有缺陷的NAT2和ATP7B.
结论:
- 特定的NAT2和ATP7B基因型的同时出现与异化肝毒性风险的增加有关.
- 由遗传缺陷加剧的INH和铜之间的协同毒性,为AT-DILI提供了机制性的洞察力.
- 这些发现强调了药物遗传学在预测和理解个人对药物诱导的肝损伤敏感性的重要性.
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