重定向拉尔提特雷克塞德从癌细胞乙基酸合成酶转向Mycobacterium tuberculosis酸乙烯转移酶
Amrita Singh1, Samantha Ottavi2, Inna Krieger3
1Department of Microbiology and Immunology, Weill Cornell Medicine, New York, New York 10021, USA.
Science advances
|March 15, 2024
概括
研究人员确定拉尔特雷克塞德是4'-酸乙烯转移酶 (PptT) 的强有力的抑制剂,这是Mycobacterium tuberculosis (Mtb) 中必不可少的酶. 从优化这种候选药物中吸取的经验教训可能有助于未来针对Mtb的抗生素开发.
科学领域:
- 生物化学 生物化学
- 药物发现 药物发现 药物发现
- 微生物学 微生物学
背景情况:
- 结核病 (TB) 仍然是一个重大的全球健康威胁,需要新的治疗药物.
- 4'-酸乙烯转移酶 (PptT) 是Mycobacterium tuberculosis (Mtb) 药物开发的验证的重要酶标.
研究的目的:
- 为了确定Mtb PptT的新型抑制剂.
- 探索拉利特雷克塞德作为抗结核病药物候选药物的潜力.
- 阐明挑战,并为开发PptT抑制剂提供见解.
主要方法:
- 对Mtb PptT的高通量选试验的优化.
- 一个大型复合库 (422,740个复合物) 的选.
- 抑制剂活性,目标参与和结构-活性关系 (SAR) 的表征.
主要成果:
- 拉利特雷克塞德被确定为迄今为止发现的最强大的Mtb PptT抑制剂.
- 试图增强抗Mtb活性和减少人类细胞毒性的尝试没有成功.
- 拉利特雷克塞德结合诱导了PptT活性部位的显著构造变化.
- 轻微的结构修改导致了改变的目标参与 (PptT到DHFR).
- 细菌内化合物积累和代谢对于解释SAR至关重要.
结论:
- 拉尔提特雷克塞德是一种有价值的化学探针,用于研究Mtb PptT.
- 针对Mtb PptT的药物开发需要仔细考虑向抑制剂相互作用和化合物药理动力学.
- 了解细菌内化合物的命运对于合理的抗MTB药物设计至关重要.
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