不同的进化途径挑战了使用抵押品敏感性作为一种抑制阻力策略的策略
Rebecca E K Mandt1, Madeline R Luth2, Mark A Tye3,4
1Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, United States.
疟疾的耐药性需要新的治疗方法. 这项研究探讨了Plasmodium dihydroorotate脱酶 (DHODH) 抑制剂的附带敏感性,发现一些药物组合可以意外地加速耐药性发展.
科学领域:
- 疟疾学 疟疾学
- 药用化学 医学化学
- 进化生物学 进化生物学
背景情况:
- 耐药性是控制疟疾的一个主要障碍.
- 附带敏感性,即对一种药物的耐药性增加对另一种药物的敏感性,提供了打击耐药性的潜在策略.
- 氨酸脱酶 (DHODH) 是抗疟疾药物的关键标.
研究的目的:
- 为了调查Plasmodium DHODH抑制剂之间的附带敏感性.
- 了解耐药机制,并确定针对疟疾的新型治疗策略.
主要方法:
- 在DHODH突变的Plasmodium系中对交叉电阻和附带敏感性的概述.
- 在使用DHODH抑制剂的药物压力下选择寄生虫.
- 耐药性突变的遗传特征.
主要成果:
- TCMDC-125334对各种DHODH突变系表现出活性,包括对DSM265.5耐药的突变系.
- 多德的副本数变异是TCMDC-125334.4的常见抵抗机制.
- 用DSM265和TCMDC-125334的组合治疗选择了具有DHODH突变的交叉耐药寄生虫.
结论:
- DHODH酶表现出显著的突变灵活性,使其能够抵抗多种药物.
- 担保敏感性策略可能并不总是抑制阻力,有时可以加速其出现.
- 需要进一步的研究来开发强大的抗疟疾疗法,克服抗药性.
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