波利冈提取物通过破坏其细胞外囊泡来抑制耐甲基金色葡萄球菌的毒性
Naoko Watabe1, Phawinee Subsomwong1, Kyosuke Yamane2
1Department of Microbiology and Immunology, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.
Journal of ethnopharmacology
|October 13, 2024
概括
多角提取物 (Indigo Ex) 破坏金黄色葡萄球菌的细胞外囊泡 (SaEVs),减少它们的毒性. 这种天然化合物显示出控制黄金菌感染的潜力,而不会伤害宿主细胞.
科学领域:
- 微生物学 微生物学
- 药理学 药理学是指药理学的学科.
- 自然产品 化学 化学
背景情况:
- 甲素耐药黄金杆菌 (MRSA) 构成了严重的全球健康威胁,导致严重的感染.
- 来自S. aureus的细菌细胞外囊泡 (SaEV) 是细菌生存和致病性的关键因素.
- 红 (Indigo Ex) 传统上用于传染病,但其对SaEVs的影响尚未研究.
研究的目的:
- 为了研究P. tinctorium提取物 (Indigo Ex) 对S. aureus细胞外囊泡 (SaEVs) 的影响.
- 阐明Indigo Ex影响SaEVs的机制.
- 评估印第戈Ex在控制金黄色细菌,特别是MRSA感染方面的潜力.
主要方法:
- 从没有农药的P. tinctorium.中制备的Indigo Ex.
- 使用超离心法从MRSA培养物中分离和净化SaEV.
- 通过电子显微镜评估Indigo Ex对SaEV形态的影响.
- 在RAW 264.7巨细胞上评估Indigo Ex细胞毒性.
- 对印第戈Ex治疗的SaEVs对免疫反应和细胞活性的影响的分析.
主要成果:
- 印第戈Ex以时间依赖的方式破坏了SaEV粒子.
- 在高稀释时,Indigo Ex对RAW 264.7细胞具有较低的细胞毒性.
- 接受Indigo Ex治疗的SaEVs显示细胞毒性降低,并抑制了巨细胞中的促炎性细胞因子 (TNF-α,IL-6) 和抗炎性细胞因子 (IL-10) 的刺激.
结论:
- 低度的Indigo Ex有效地通过破坏SaEVs来抑制S. aureus的毒性.
- 印第戈Ex不会对宿主细胞产生显著的细胞毒性.
- 印第戈Ex作为一种治疗药物,有望控制金黄色细菌感染.
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