来自Candida haemulonii的细胞外囊泡. 易受伤害 调节巨细胞氧化爆发
Bianca T M Oliveira1, Thales M H Dourado2, Patrick W S Santos1
1Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil.
Journal of fungi (Basel, Switzerland)
|May 26, 2023
概括
菌的细胞外囊泡 (EVs) 触发巨细胞的氧化反应,可能有助于真菌的毒性. 这些EV可能会提供针对多药耐药酵母菌感染的新型治疗点.
科学领域:
- 菌类学 菌类学是指菌类学.
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
背景情况:
- *Candida haemulonii* 种群综合体包括多种耐药酵母病原体,导致人类严重感染.
- 菌类细胞外囊泡 (EVs) 参与毒性,调解宿主-病原体相互作用并携带效应分子.
- 了解EV在*C.haemulonii*感染中的作用,对于开发有效的治疗方法至关重要.
研究的目的:
- 为了描述EV产生的特征,使用Candida haemulonii. var. *易受伤害的 *
- 研究小鼠巨细胞RAW 264.7细胞对*C.haemulonii*EVs的反应,特别关注氧化应激的产生.
主要方法:
- 细胞外囊泡的产生和分离来自Candida haemulonii的各种. *易受伤害的 *
- 使用反应性氧物种 (ROS) 检测试验,评估暴露于酵母和EV的巨细胞活力.
- 评估NOX-2和COX-2-PGE2通路对巨细胞对EVs的反应的参与.
主要成果:
- 高度的C.haemulonii酵母和EVs并没有影响巨细胞的活力.
- 巨细胞识别了*C. haemulonii* EVs,通过NOX-2通路触发了氧化反应,增加了超氧化物和过氧化水平.
- 这种氧化应激没有诱导脂质过氧化或激活COX-2-PGE2通路;然而,C. haemulonii* var. 易受伤害的和高的EV度激活了微生物杀菌作用.
结论:
- 低度的*C. haemulonii* EVs可能会逃避经典的巨细胞识别,从而促进毒性因子的传递.
- 由 *C. haemulonii* var. 产生的电动汽车. 易受伤害和高的EV度可以刺激巨细胞中的杀菌活性.
- 菌EVs代表潜在的毒性因素和抗原的有希望的来源,用于针对*C. haemulonii*感染的新型治疗策略.
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