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Biological Evaluation of Native Streptococcal Competence Stimulating Peptides Reveal Potential Crosstalk Between Streptococcus mitis and Streptococcus pneumoniae and a New Scaffold for the Development of S. pneumoniae Quorum Sensing Modulators.
RSC Chemical Biology ( IF 4.2 ) Pub Date : 2020-05-29 , DOI: 10.1039/d0cb00012d
Tahmina Ahmed Milly 1 , Yftah Tal-Gan 1
Affiliation  

Streptococcus pneumoniae, an opportunistic human pathogen, acquires genes from its neighboring species of the mitis group of streptococci, which confer antibiotic resistances and allow it to produce diverse virulence factors. Most species of the mitis group are naturally competent, and they utilize the competence stimulating peptide (CSP) and the CSP-dependent competence regulon, a conserved quorum sensing (QS) circuit, to regulate their competence behavior. The dependence of the mitis group on this communication pathway makes QS a potential target to control their behavior. In this work, we sought to evaluate the impact of the native pheromones of the adjacent species of S. pneumoniae to modulate the activity of the S. pneumoniae competence regulon. Our results revealed the potential role of S. mitis as a modulator of QS in S. pneumoniae. Most importantly, our analysis also revealed that by using the native pheromone of S. mitis as a template, highly potent pan-group agonists and antagonists of the pneumococcal competence regulon could be developed. The newly developed QS modulators may have therapeutic utility in treating pneumococcal infections.

中文翻译:

天然链球菌能力刺激肽的生物学评价揭示了链球菌炎和肺炎链球菌之间以及潜在的串扰和新型支架为肺炎链球菌群体感应调节剂的发展。

肺炎链球菌是一种机会性人类病原体,从其邻近的链球菌属微生物物种获得基因,这些基因赋予抗生素抗性并使其产生多种毒力因子。mitis组中的大多数物种都具有天然能力,它们利用能力刺激肽(CSP)和依赖CSP的能力调节因子(保守的群体感应(QS)回路)来调节其能力行为。微生物群对这种交流途径的依赖性使得QS成为控制其行为的潜在目标。在这项工作中,我们试图评估S的相邻物种的自然信息素的影响。肺炎以调节的活性的肺炎链球菌胜任力。我们的研究结果揭示的潜在作用缓症链球菌的QS的调制器肺炎链球菌。最重要的是,我们的分析还表明,通过使用本地信息素缓症链球菌为模板,高效的泛组激动剂和肺炎球菌能力调节子的拮抗剂可以开发。新开发的QS调节剂可能在治疗肺炎球菌感染方面具有治疗作用。
更新日期:2020-05-29
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