替代氧化酶在白虫 (Candida albicans) 中促进高铁耐受性
Rishabh Sharma1, Andrew A Gibb2, Kelcie Barnts3
1Oral Microbiome Research Laboratory, Kornberg School of Dentistry, Temple University , Philadelphia, Pennsylvania, USA.
Microbiology spectrum
|November 6, 2023
概括
白菌通过使用替代氧化酶 (AOX) 来管理反应性氧物种 (ROS) 耐受高铁. 消除AOX降低了真菌毒性,这表明AOX是潜在的抗真菌标.
科学领域:
- 菌类学 菌类学是指菌类学.
- 医学微生物学 医学微生物学
- 生物化学 生物化学
背景情况:
- * *Candida albicans*是一种具有代谢灵活性的机会性真菌病原体.
- * 它适应不同的宿主环境,具有不同的营养含量,包括铁含量.
- *高铁含量可以诱导氧化应激,这是真菌生存的挑战.
研究的目的:
- * 调查C. albicans如何容忍高铁环境.
- * 了解替代氧化酶 (AOX) 在减轻铁引起的氧化应激中的作用.
- * 评估向AOX在*C. albicans*感染中的治疗潜力.
主要方法:
- * 在高铁条件下分析*C. albicans*基因表达.
- * 在野生型和突变菌株中测量活性氧物种 (ROS).
- * 在小鼠口腔喉疹病例模型中评估真菌毒性.
主要成果:
- *高铁含量诱导了C. albicans*中AOX1/2的表达.
- * 替代氧化酶 (AOX) 在高铁下限制线粒体中ROS的积累.
- *在高铁的小鼠模型中,AOX1/2*的遗传删除显著降低了真菌毒性.
- *人类线粒体缺乏AOX,突出了物种特异性差异.
结论:
- * *C. albicans*利用AOX来抵消高铁诱导的氧化应激.
- * AOX对于富含铁的宿主中的真菌毒性至关重要.
- *AOX是抗真菌疗法的一个有希望的宿主特异性标.
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