凝封装生物膜抑制剂废除了空心活动的空心活动
Parmanand Ahirwar, Veronika Kozlovskaya, Bhavitavya Nijampatnam
1Department of Integrative Biomedical and Diagnostic Sciences, Oregon Health and Science University, Portland, Oregon 97239, United States.
Journal of medicinal chemistry
|June 7, 2023
概括
研究人员开发了一种新化合物HA5,用于对抗Streptococcus mutans生物膜,减少大鼠的牙. 这种优化的抑制剂,封装在水凝中,对口腔健康应用有希望.
科学领域:
- 微生物学 微生物学
- 材料科学 材料科学 材料科学
- 生物化学 生物化学
背景情况:
- 突变性菌 Streptococcus mutans 生物膜是导致牙的主要原因之一.
- 以前的生物膜抑制剂,如IIIC5,缺乏最佳的溶解性和输送方法.
- 开发具有改进性质的向抑制剂对于有效预防空至关重要.
研究的目的:
- 设计和合成IIIC5的新型类似物,具有增强的溶解性和生物膜抑制活性.
- 为了促进化合物的封装到pH响应的水凝微粒中,以便有针对性的输送.
- 评估优化化合物及其水凝配方在牙的临床前模型中的疗效.
主要方法:
- 合成和描述HA5,这是IIIC5.5的优化模拟物.
- 确定HA5溶解度和Streptococcus mutans生物膜的抑制 (IC50).
- 用GtfB催化域对HA5进行共结晶,以阐明活性位点相互作用.
- 将HA5封装成响应pH的水凝微粒 (HEBI).
- 在鼠牙模型中对HA5和HEBI的体内评估.
主要成果:
- 优化的HA5化合物显示出更好的溶解性 (120.09μg/mL) 和强大的抑制Streptococcus mutans生物膜 (IC50 = 6.42μM).
- HA5 已表现出选择性,在治疗相关的度下不影响口腔共生物种的生长.
- 晶结构揭示了HA5与GtfB活性部位的相互作用,证实了其抑制葡萄糖生成的机制.
- 凝封装生物膜抑制剂 (HEBI) 维持了S. mutans生物膜的选择性抑制.
- 无论是HA5还是HEBI,都显著减少了Streptococcus mutans感染的老鼠的牙损伤.
结论:
- HA5是一种有希望的,高度溶解的,选择性抑制Streptococcus mutans生物膜的抑制剂.
- 凝封装 (HEBI) 提供了一种可行的策略,用于向输送和持续释放抑制剂.
- HA5和HEBI在预防和治疗牙方面具有显著的潜力.
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