皮肤植物Nannizzia gypsea对生物膜形成的表征
Bruno B A Arantes1, Ana Karla L F Cabral1,2, Kelvin S Dos Santos1
1Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University UNESP, Araraquara 14800-903, Brazil.
Journal of fungi (Basel, Switzerland)
|June 25, 2025
概括
纳尼齐亚海形成了一个强大的生物膜,具有显著的细胞外基质,增强了其对治疗的抵抗力. 这种真菌生物膜表现出与病变发生和质化表面的殖民相关的基因表达增加.
科学领域:
- 医学真菌学 医学真菌学
- 在真菌病原体的产生过程中.
- 生物膜研究 生物膜研究
背景情况:
- 皮肤植物病影响全球25%的人口,由菌引起,如Nannizzia gypsea.
- 纳尼齐亚海的毒性与角质溶解酶和潜在的生物膜形成有关,增加了治疗耐药性.
研究的目的:
- 使用ex vivo头发模型调查纳尼兹海生物膜的形成.
- 描述生物膜的细胞外基质组成.
- 分析浮游生物与生物膜表型中关键毒性基因的表达.
主要方法:
- 活体头发模型,XTT减小试验,晶体紫色染色,以及生物膜分析的SEM.
- 细胞外基质组件的分析:多糖,蛋白质和细胞外DNA.
- 定量PCR (qPCR) 用于评估毒性基因表达 (亚素7,菌素,多药物和毒素挤出蛋白2).
主要成果:
- 在5天内,Nannizzia gypsea形成了一个成熟,强大的生物膜.
- SEM揭示了广泛的细胞外基质,在头发模型中观察到细胞外基质寄生.
- 细素7,真菌素和多药和毒素挤出蛋白2的基因表达在生物膜形式显著更高.
结论:
- 纳尼齐亚 gypsea形成了一个有弹性的生物膜,具有相当大的细胞外基质.
- 生物膜表型与毒性和耐药性相关基因的表达增加有关.
- 这些发现突出了生物膜的形成作为Nannizzia gypsea病原和治疗挑战的关键因素.
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