奥拉诺芬对Histoplasma capsulatum有活性,并降低了与毒性相关基因的表达
Marcos de Abreu Almeida1,2, Lilian Cristiane Baeza3, Leandro B R Silva4,5
1Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil.
PLoS neglected tropical diseases
|October 7, 2024
概括
抗风湿药物奥拉诺芬有效地抑制了Histoplasma capsulatum的生长,这种真菌导致了他的血形成. 奥拉诺芬还可以降低关键的毒性因素,这表明它有可能成为一种新的抗真菌治疗方法.
科学领域:
- 菌类学 菌类学是指菌类学.
- 发现抗微生物药物发现.
- 传染病 传染病 传染病
背景情况:
- 奥拉诺芬是一种已知抗菌素性能的已知抗风湿药物.
- 它对Histoplasma capsulatum的疗效,一种导致严重系统性真菌菌的真菌,仍然在很大程度上未经调查.
- 对于体质菌体存在有限的治疗选择,突出显示了对新治疗方法的需求.
研究的目的:
- 为了评估 auranofin 对 Histoplasma capsulatum 的抗真菌活性.
- 评估奥拉诺芬对H. capsulatum毒性因子表达的影响.
主要方法:
- 确定了对15种H. capsulatum菌株的奥拉诺芬的最小抑制和杀菌度 (MIC和MFC).
- 在巨细胞和Tenebrio molitor感染模型中评估了auranofin的疗效.
- 使用定量PCR.病毒性基因表达的量化变化.
主要成果:
- 奥拉诺芬对H. capsulatum表现出杀菌活性,MICs从1.25到5.0μM,MFCs从2.5到>10μM.
- 奥拉诺芬减少了细胞内真菌负担,并在动物模型中提供了保护.
- 多个毒性相关基因的表达显著下降,包括甲酶A和HSP70.
结论:
- 奥拉诺芬对H. capsulatum表现出强大的杀菌活性.
- 奥拉诺芬有效地减少了H. capsulatum中关键毒性因子的表达.
- 奥拉诺芬代表了开发抗胰岛素等离子体病的新疗法的一个有前途的候选人.
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