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In vitro and in silico studies on the structural and biochemical insight of anti-biofilm activity of andrograpanin from Andrographis paniculata against Pseudomonas aeruginosa
World Journal of Microbiology and Biotechnology ( IF 4.0 ) Pub Date : 2020-08-27 , DOI: 10.1007/s11274-020-02919-x
Moumita Majumdar 1 , Amit Dubey 2 , Ritobrata Goswami 3 , Tarun Kumar Misra 1 , Dijendra Nath Roy 4
Affiliation  

Microbial infections have become a global threat to drug-tolerant phenomena due to their biofilm formatting capacity. In many cases, conventional antimicrobial drugs fail to combat the infection, thus necessitating the discovery of some alternative medicine. Over several decades, plant metabolites have played a critical role in treating a broad spectrum of microbial infections due to its low cytotoxicity. Andrograpanin, a secondary metabolite, is a diterpenoid present in the leaf of Andrographis paniculata. In this study, andrograpanin (0.15 mM) exhibited significant inhibition on biofilm production by Pseudomonas aeruginosa in the presence of gentamicin (0.0084 mM). The impaired production of extracellular polymeric substances and several virulence factors of Pseudomonas aeruginosa were investigated to understand the mechanism of action mediated by andrograpanin. The structural alteration of biofilm was evaluated by using fluorescence microscopy, atomic force microscopy and field emission scanning electron microscopy. The in silico molecular simulation studies predicted interaction of andrograpanin with quorum sensing proteins such as RhlI, LasI, LasR, and swarming motility protein BswR of Pseudomonas aeruginosa. Overall the studies indicate that andrograpanin could be used as a therapeutic molecule against biofilm development by Pseudomonas aeruginosa.

中文翻译:

穿心莲中穿心莲苷对铜绿假单胞菌的抗生物膜活性的结构和生化研究的体外和计算机研究

由于其生物膜形成能力,微生物感染已成为对耐药现象的全球威胁。在许多情况下,常规抗菌药物无法对抗感染,因此需要发现一些替代药物。几十年来,由于其低细胞毒性,植物代谢物在治疗广谱微生物感染方面发挥了关键作用。Andrograpanin 是一种次级代谢产物,是一种存在于穿心莲叶中的二萜类化合物。在本研究中,在庆大霉素 (0.0084 mM) 存在下,穿心莲 (0.15 mM) 对铜绿假单胞菌的生物膜产生有显着抑制作用。研究了铜绿假单胞菌细胞外聚合物的产生受损和几种毒力因子,以了解穿心莲素介导的作用机制。通过使用荧光显微镜、原子力显微镜和场发射扫描电子显微镜评估生物膜的结构变化。计算机模拟分子模拟研究预测了穿心莲素与群体感应蛋白(如铜绿假单胞菌的 RhlI、LasI、LasR 和蜂群运动蛋白 BswR)的相互作用。总体而言,研究表明穿心莲素可用作对抗铜绿假单胞菌生物膜发展的治疗分子。原子力显微镜和场发射扫描电子显微镜。计算机模拟分子模拟研究预测了穿心莲素与群体感应蛋白(如铜绿假单胞菌的 RhlI、LasI、LasR 和蜂群运动蛋白 BswR)的相互作用。总体而言,研究表明穿心莲素可用作对抗铜绿假单胞菌生物膜发展的治疗分子。原子力显微镜和场发射扫描电子显微镜。计算机模拟分子模拟研究预测了穿心莲素与群体感应蛋白(如铜绿假单胞菌的 RhlI、LasI、LasR 和蜂群运动蛋白 BswR)的相互作用。总体而言,研究表明穿心莲素可用作对抗铜绿假单胞菌生物膜发展的治疗分子。
更新日期:2020-08-27
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