卢皮醇可以缓解生物膜的形成,并减轻Candida albicans中的毒性变态
Ravi Jothi1, Nambiraman Malligarjunan1, Karanthamalai Vidhya1
1Department of Biotechnology, Science Campus, Alagappa University, Karaikudi, 630003, Tamil Nadu, India.
Microbial pathogenesis
|August 18, 2025
概括
卢皮醇通过破坏生物膜形成和毒性基因表达,在亚抑制度下有效地抑制菌感染. 这种天然化合物显示出作为一种新型抗真菌疗法对候群病的承诺.
科学领域:
- 菌类学 菌类学是指菌类学.
- 药理学 药理学是指药理学的学科.
- 传染性疾病 传染性疾病
背景情况:
- 全球Candida感染负担需要新的治疗策略.
- 坎迪达病毒的毒性因素,包括海法延长和生物膜形成,是治疗的关键目标.
- 免疫受损的个体特别容易感染严重的角膜炎.
研究的目的:
- 调查卢皮醇对Candida albicans,Candida tropicalis和Candida glabrata的抗候菌疗效.
- 在低于最低抑制度 (sub-MIC) 的水平上评估卢皮醇对生物膜形成,细胞进展和毒性基因表达的影响.
- 评估lupeol作为治疗候群病的治疗剂的潜力.
主要方法:
- 确定了卢佩的最小抑制度 (MIC) 和最小杀菌度 (MFC).
- 使用共聚焦和扫描电子显微镜在亚MIC度 (25-200μg/mL) 评估生物膜抑制.
- 通过qPCR对细胞生长和毒性基因表达 (例如RAS1,UME6,HWP1,EFG1,CPH1) 的评估影响.
主要成果:
- 卢皮醇的MIC和MFC分别为256和512微克/毫升.
- 低于MIC的卢皮醇剂量依赖地抑制了生物膜的形成,而不会影响代谢活性.
- 观察到细胞生长的抑制,酵母形态的逆转和殖民地外观的改变,具有显著的毒性基因 (RAS1,UME6,HWP1,EFG1,CPH1) 的下调和TUP1.1的上调.
结论:
- 卢皮醇通过向毒性因子和破坏生物膜完整性,表现出显著的抗候性活性.
- 卢佩奥尔是一种有前途的治疗候选药物,用于控制 Candida 感染.
- 需要进一步研究lupeol在抗真菌治疗中的临床应用.
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