天然黄黄对Streptococcus mutans生物膜形成的抑制作用
Lucille Rudin1, Noelle Roth1, Julien Kneubühler1
1Department Research, University Center for Dental Medicine Basel UZB, University of Basel , Basel, Switzerland.
Microbiology spectrum
|September 21, 2023
概括
素是一种天然的黄,可以有效地抑制Streptococcus mutans生物膜的形成和酸的产生,而不会损害细菌的生存能力. 这种化合物向毒性基因和蛋白质,提供了一种有前途的天然策略来对抗牙损伤.
科学领域:
- 微生物学 微生物学
- 自然产品化学 自然产品化学
- 口腔健康 口腔健康
背景情况:
- 突变性链球菌 (Streptococcus mutans) 是一种主要的病原体,导致牙,这是一个流行的生物膜相关疾病.
- S. mutans的毒性依赖于生物膜的形成,质的去矿化,以及粘合素,外聚糖和酸的产生.
- 丁烯,一种天然的黄,表现出抗菌性质,但其对S. mutans病原性的影响尚不清楚.
研究的目的:
- 调查黄素对S. mutans生长,酸生产和生物膜形成 (早期和晚期) 的影响.
- 评估黄素对生物膜破坏的潜力.
- 阐明黄素对S. mutans的抗生物膜活性背后的分子机制.
主要方法:
- 对S. mutans细胞活力进行了评估. 评估了黄素对S. mutans细胞活性的毒性.
- 在黄素的存在下量化酸的生产.
- 测量了早期和晚期生物膜的形成和破坏.
- 分析了关键的S. mutans病毒性基因 (gbpC, spaP, gtfBCD, ftf) 的表达.
- 研究了黄素与葡萄糖转移酶 (Gtfs) 和粉样蛋白的相互作用 (使用 thioflavin T 试验).
主要成果:
- 氨酸表现出显著的抗生物膜活性,而不会影响细菌的活力.
- 减少了参与粘附素和外聚糖 (EPS) 生产的毒性基因的表达.
- 降低水不溶性葡萄糖的产生,表明干扰Gtfs.
- 在抑制度下显著降低了S. mutans的酸生产.
- 抑制细胞外蛋白质的提奥夫拉T吸收,表明粉样蛋白结构的向,并以依赖粉样蛋白的方式破坏生物膜.
结论:
- 氨酸具有强大的,类型的抗生物膜特性,可以对抗 cariogenic 病原体 S. mutans.
- 它通过降低病毒性基因表达和减少EPS生产来有效地抑制生物膜的形成.
- 氨酸可能直接向Gtfs和功能性粉样蛋白,为管理口腔生物膜和预防牙损伤提供了一种新的治疗方法.
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