通过Pandanus tectorius的叶子提取物对抗Chromobacterium violaceum的质量定数灭介导的毒性因子损害
Venkatramanan Mahendrarajan1, Gothandam Kodiveri Muthukaliannan1, Nalini Easwaran1
1Vellore Institute of Technology, Katpadi, Tamil Nadu, India.
Natural product research
|April 15, 2025
概括
潘达努斯 (Pandanus tectorius) 树叶提取物有效地抑制了细菌的定数感应和Chromobacterium violaceum中的毒性因素. 这种无毒的提取物显示出作为一种安全的抗定数感应剂的潜力.
科学领域:
- 微生物学 微生物学
- 自然产品化学 自然产品化学
- 分子生物学分子生物学
背景情况:
- 定数感应 (QS) 是一种细胞间通信机制,对细菌毒性至关重要.
- 细菌生物膜有助于持续性感染和抗菌素耐药性.
- 自然产品为传统抗微生物药物提供了潜在的替代品.
研究的目的:
- 为了评估Pandanus tectorius (PT) 叶子提取物对Chromobacterium violaceum. violaceum的抗定数感应活性.
- 为了研究提取物对QS控制的毒性因子和生物膜形成的影响.
- 识别潜在的生物活性化合物及其与QS调节器的分子相互作用.
主要方法:
- 在体外评估PT叶提取物对紫素,乙类荷马赛林乳,基因酶,外聚糖,血清素和外膜囊泡产生的影响.
- 生物膜抑制测定.生物膜抑制测定.
- 基因表达分析 (cviI, cviR, vioA) 与定数感应相关.
- 气色谱-质谱 (GC-MS) 用于化合物识别和分子对接与 cviR.
- 有毒性测试. 有毒性测试.
主要成果:
- 在亚MIC度下,PT叶子提取物显著抑制了多重毒性因子.
- 在1.5毫克/毫升的剂量下,生物膜的形成减少了81.46%.
- 观察到关键的定数感知基因 (cviI, cviR, vioA) 的下调.
- 斯蒂格马斯托醇被确定为一种潜在的生物活性化合物,与cviR蛋白 (-8.5 kcal/mol) 具有强烈的结合亲和力.
- 提取物在测定中没有表现出任何毒性.
结论:
- 潘达努斯 (Pandanus tectorius) 树叶提取物具有强大的反定数感应特性.
- 提取物有效抑制细菌毒性因素和生物膜的形成.
- 斯蒂格马斯托醇是向细菌交流的有希望的候选者,提取物是无毒的,表明其作为安全的抗QS剂的潜力.
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