[1]蒋利荣 邓晰朝 覃 玥 林华丽.基于体外实验和分子对接研究枫杨果抑菌活性及分子机制[J].大众科技,2019,21(12):10-13.
 Study on Antibacterial Activity and Molecular Mechanism of Pterocaryastenoptera C.DC Based on in Vitro Experiment and Molecular Docking[J].Popular Science & Technology,2019,21(12):10-13.
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基于体外实验和分子对接研究枫杨果抑菌活性及分子机制()
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《大众科技》[ISSN:1008-1151/CN:45-1235/N]

卷:
21
期数:
2019年12
页码:
10-13
栏目:
轻工与化工
出版日期:
2019-12-20

文章信息/Info

Title:
Study on Antibacterial Activity and Molecular Mechanism of Pterocaryastenoptera C.DC Based on in Vitro Experiment and Molecular Docking
作者:
蒋利荣12 邓晰朝 12 覃 玥 12 林华丽 1
关键词:
(1.河池学院化学与生物工程学院广西 河池 5463002.广西高校微生物与植物资源开发重点实验室广西 河池 546300)
Keywords:
pterocarya stenoptera C. DC bacteriostatic activty oleanolic acid molecular docking
文献标志码:
A
摘要:
目的:基于体外实验和分子对接研究枫杨抑菌活性及机制。方法:以枫杨果、树皮、叶为研究对象,分别研究其水提物和醇提物(70%乙醇)对金黄色葡萄球菌、大肠杆菌、绿脓杆菌、伤寒沙门菌、化脓性链球菌、表皮葡萄球菌的抑菌活性,确定抑菌谱和最小抑菌浓度(MIC)。利用活性追踪方法,通过硅胶吸附色谱、薄层色谱等手段,分离单体化合物,并进行抑菌活性研究,选择 PBP5、FabI、FabH、FtsZ 4 个抑菌关键蛋白靶点,利用 Systems Dock Web Site 软件进行分子对接,研究其抑菌机制。结果:实验发现枫杨果的醇提物抑菌效果最好,对伤寒沙门菌最小抑菌浓度为 7.81 mg/mL,首次从枫杨果中分离得到 β-谷甾醇、β-胡萝卜苷、齐敦果酸,三个化合物对于 PBP5、FabH、FtsZ 蛋白靶点 Docking score 均大于 7,结果活性很好。结论:枫杨果醇提物抑菌谱广、抑菌能力强,其可能是通过抑制革兰氏阳性菌细胞壁肽聚糖的合成,以及细菌脂肪酸的生物合成,干扰其生物膜的形成从而抑制细菌的生长和繁殖,从而起到广谱的抗菌效果。
Abstract:
Objective: Based on in vitro experiments and molecular docking, the antibacterial activity and mechanism of Pterocaryastenoptera C. DC were studied. Methods: The antibacterial activity of water extract and alcohol extract (70% ethanol) of pterocaryastenoptera C. DC, bark and leaf against Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi,Streptococcus pyogenes and Staphylococcus epidermidis were studied, and the antibacterial spectrum and Mic were determined. Usingthe activity tracking method, the single compound was isolated by means of silicone adsorption spectrum and thin-layer chromatography,and the study of anti-bacterial activity was carried out, and four key protein targets of antiseptic protein were selected, and moleculardocking was carried out by using Systems Dock Web Site software. The mechanism of antiseptic stoids was studied. Result: The resultsshowed that the ethanol extract of pterocarya stenoptera C. DC had the best bacteriostatic effect. The minimum bacteriostaticconcentration was 7.81 mg / ml for Salmonella typhi. β-sitosterol, β-carotene and oleanolic acid were isolated from pterocaryastenoptera C. DC for the first time. The three compounds were more than 7 for the docking score of PBP5, FabH and FtsZ protein targets,and the activity was very good. Conclusion: The alcohol extract of Fengyang fruit has a wide antibacterial spectrum and strongantibacterial ability. It may interfere with the formation of biofilm by inhibiting the synthesis of peptidoglycan in cell wall ofGram-positive bacteria and the biosynthesis of bacterial fatty acid, so as to inhibit the growth and reproduction of bacteria, thus playing abroad-spectrum antibacterial effect.

参考文献/References:

[1] 南京中医药大学. 中药大辞典[M]. 上海: 上海科学技术出版社,1997.[2] 余科义,柴凤兰,赵开楼. 枫杨属植物化学成分及生物活性研究进展[J]. 湖北农业科学,2018,57(1): 5-10.[3] 张兴悦. 抑菌植物筛选与枫杨杀菌活性研究[D]. 辽宁:辽宁师范大学,2007.[4] 李汉浠. 枫杨抗菌成分研究[D]. 南宁: 广西中医药大学,2012.[5] 罗彭,王佳佳,李兵,等. 枫杨树皮抗菌物质的分离鉴定研究[J]. 天然产物研究与开发,2015,27(2): 246-250.[6] 蔡珺珺,袁田青,杨银萍,等. 多靶点的抗菌先导化合物的虚拟筛选及活性研究[J]. 畜牧兽医学报,2018,49(7): 1500-1510.[7] 刘悦. 基于 β-酮脂酰-ACP-合成酶Ⅰ(FabB)的抑制剂分子作用机制研究及虚拟筛选[D]. 天津: 天津大学,2018.[8] 刘晓博,李玉艳,尤启冬. β-酮脂酰-ACP 合成酶(FabH)抑制剂研究进展[J]. 化学研究进展,2009,21(9): 1930- 1938.[9] 刘敬如. 基于 FtsZ 的二氢喹唑啉和菲啶类衍生物的设计、合成和抗菌活性研究[D]. 济南: 山东大学,2018.[10] 王爱民,李梅,孙佳,等. 羊耳菊提取物的抗菌和抗炎活性研究[J]. 时珍国医国药,2018,29(7): 50-54.[11] Hsin K Y, Matsuoka Y, Asai Y, et al. SystemsDock: a webserver for network pharmacology-based prediction andanalysis [J]. Nucleic Acids Res, 2016, 44(W1): W507.[12] 沈红波,周一农,郑杰,等. 基于网络药理学葵花护肝片“多成分-多靶点-多通路”的作用机制研究[J]. 中国中药杂志,2018,12: 1-16.[13] Hsin K Y, Ghosh S, Kitano H. Combining machine learningsystems and multiple docking simulation packages toimprove docking prediction reliability for networkpharmacology[J]. PLoS ONE, 2013, 8(12): e83922.[14] 邢梦雨,夏道宗,田崇梅,等. 枫杨叶提取物抑制金黄色葡萄球菌的机制研究[J]. 浙江中医药大学学报,2019,43(1): 23-29,37.

备注/Memo

备注/Memo:
【收稿日期】2019-10-11【基金项目】广西高校中青年教师基础能力提升项目(KY2016LX281);河池学院校级科研课题(2014QN-N005);广西高校微生物及植物资源开发利用重点实验室开放课题(2015HL011);河池学院校级重点实验室项目“红水河流域药用资源综合开发利用”,河池学院高层次人才科研启动费项目(XJ2018GKQ014)。【作者简介】蒋利荣(1987-),河池学院化学与生物工程学院讲师,研究方向为天然产物成分分离及作用机制研究。【通信作者】覃玥(1970-),河池学院化学与生物工程学院教授,研究方向为病原微生物的分离及其致病机制研究。
更新日期/Last Update: 2020-03-10