海洋棕藻Padina boergesenii及其活性成分对Streptococcus mutans的抗菌作用
Ravichellam Sangavi1, Nambiraman Malligarjunan1, Lakkakula Satish2
1Department of Biotechnology, Alagappa University, Karaikudi, India.
Frontiers in cellular and infection microbiology
|December 10, 2024
概括
这项研究探讨了Padina boergesenii提取物对抗Streptococcus mutans的抗癌潜力. 提取物有效地抑制生物膜形成和毒性因素而不会伤害细菌,为牙损伤预防提供了一种新的方法.
科学领域:
- 海洋天然产品 海洋天然产品
- 微生物学 微生物学
- 牙损研究 牙损研究
背景情况:
- 突变性链球菌是导致牙损伤的主要原因,形成有弹性的生物膜.
- 传统的抗生素通常对S. mutans生物膜无效.
- 向毒性因子为直接抗菌作用提供了一个有希望的替代方案.
研究的目的:
- 为了研究帕迪纳boergesenii的甲醇提取物 (MEPB) 的抗癌性质.
- 评估MEPB对S. mutans毒性因子和生物膜形成的影响.
- 识别MEPB中的活性化合物并评估其抗菌膜疗效.
主要方法:
- 评估MEPB的抗菌膜活性和对S. mutans生存能力的影响.
- 量化粘附性,酸性生产和外聚糖 (EPS) 合成的减少.
- 使用qPCR分析与毒性相关的基因表达.
- 通过GC-MS/MS识别活性化合物并测试其有效性.
主要成果:
- 在不影响细菌活力的情况下,MEPB表现出显著的剂量依赖的抗菌膜活性 (93%的抑制).
- 低于MIC水平的MEPB降低了粘附性,酸性生产和EPS合成 (葡萄糖合成).
- MEPB降低了关键的毒性基因 (gtfB, gtfC, gtfD, gbpB, gbpC, vicR) 的调节,并降低了细胞表面的疏水性和eDNA的产生.
- 棕酸,米里斯酸和酸被确定为具有强大的抗菌膜作用的主要活性化合物.
结论:
- 帕迪纳boergesenii提取物 (MEPB) 通过向S. mutans的毒性,具有显著的抗癌性质.
- MEPB有效地抑制生物膜的形成和关键的毒性因素,而不会影响细菌的生存能力.
- 已识别的活性化合物,如棕酸,酸和酸,为开发新型抗虫剂提供了潜力.
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