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Proteomic analysis and antibacterial effects of lithospermi radix against common bacteria from human infected wounds

机译:紫草根对人类感染伤口常见细菌的蛋白质组学分析和抗菌作用

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摘要

The prevention and treatment of infections of human wounds are an important issue. In this investigation five herbal plants were selected, and their antibacterial effects were elucidated. Of these five herbal plants, the morphological changes of the one with the strongest antibacterial effects were observed using a scanning electron microscope (SEM) and the differential expression of bacterial proteins treated with them was determined by two-dimensional gel electrophoresis (2D-GE). Two proteins of weakly expressed spots from the highest matching percentage of 2D-GE were identified by matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF/TOF). The results indicated that the Lithospermi radix have the best minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC). The SEM examination reveals different bactericidal morphological changes and colony distributions obtained using Lithospermi radix. 2D-GE reveals that Staphylococcus aureus treated with Lithospermi radix has the highest matching percentage (90.93%). Then identification of two proteins that are weakly expressed in Staphylococcus aureus by MALDI-TOF/TOF reveals that they are Holliday junction ATP-dependent DNA helicase RuvB and D-alanine: D-alanine ligase (DDI). These results are noteworthy to suggest that Lithospermi radix may be used as an antibacterial medicine to treatment of human wound infection.
机译:预防和治疗人类伤口感染是重要的问题。在这项研究中,选择了五种草药植物,并阐明了它们的抗菌作用。在这五种草药植物中,使用扫描电子显微镜(SEM)观察到一种具有最强抗菌作用的植物的形态变化,并通过二维凝胶电泳(2D-GE)确定了用它们处理的细菌蛋白的差异表达。 。通过基质辅助激光解吸电离飞行时间质谱(MALDI-TOF / TOF),从2D-GE的最高匹配百分比中识别出两种表达较弱的蛋白。结果表明,紫苏具有最佳的最小抑菌浓度(MIC)和最小的杀菌浓度(MBC)。 SEM检查显示使用紫草根获得的不同杀菌形态变化和菌落分布。 2D-GE显示,用紫草根处理的金黄色葡萄球菌的匹配率最高(90.93%)。然后,通过MALDI-TOF / TOF鉴定在金黄色葡萄球菌中弱表达的两种蛋白质表明,它们是霍利迪结ATP依赖性DNA解旋酶RuvB和D-丙氨酸:D-丙氨酸连接酶(DDI)。这些结果值得注意,表明紫草根可以用作治疗人类伤口感染的抗菌药物。

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