【目的】探究天麻的抗疲劳主要成分及其作用机制。【方法】通过中药系统药理学数据库与分析平台(TCMSP)、Web of Science (WOS)及中国知网(CNKI)等数据库,对天麻活性成分进行检索;通过数据库SwissTarget Prediction对天麻有效成分的作...【目的】探究天麻的抗疲劳主要成分及其作用机制。【方法】通过中药系统药理学数据库与分析平台(TCMSP)、Web of Science (WOS)及中国知网(CNKI)等数据库,对天麻活性成分进行检索;通过数据库SwissTarget Prediction对天麻有效成分的作用靶点进行预测。采用数据库Disgenet获取与机体疲劳相关的靶基因,通过Venny及Cytoscape等软件,建立天麻-药效成分-抗疲劳靶点相互作用的调控网络,对其有效成分进行筛选。通过数据库String建立蛋白质相互作用关系网络,对中药活性成分的作用靶点进行筛选,并对其作用机制进行探究。利用数据库DAVID执行基因本体(GO)功能富集和京都基因与基因组百科全书(KEGG)通路富集分析。通过软件Autodock Vina,将天麻中的主要活性成分与抗疲劳相关的靶点进行分子对接。【结果】共获得98个天麻活性成分,预测得到94个天麻抗疲劳靶点。筛选出5个抗疲劳的主要活性成分,分别为天麻素(gastrodin)、L-焦谷氨酸(L-pyroglutamicacid)、原儿茶酸(protocatechuicacid)、3,4-二羟基苯甲醛(3,4-dihydroxybenz-aldehyde)、4-乙氧基甲基苯酚[4-(ethoxymethyl)-glucopyranosyl-phenol]。蛋白互作网络拓扑分析结果表明,信号转导及转录激活蛋白3(STAT3)、磷酸肌醇3激酶(PIK3CA)、磷酸肌醇-3-激酶催化亚基Β肽(PIK3CB)、磷酸肌醇-3-激酶催化亚基δ肽(PIK3CD)、磷酸肌醇3激酶调节亚基1(PIK3R1)以及雌激素受体(ESR1)为天麻抗疲劳的关键靶点。GO和KEGG富集分析显示,天麻抗疲劳作用涉及110个条目和141个通路。分子对接结果显示,天麻的5个主要活性成分与抗疲劳关键靶点能够稳定结合。【结论】天麻抗疲劳作用涉及多种活性成分、多个信号通路以及多个作用靶点。天麻可能通过清除自由基、降低细胞炎症反应、促进能量代谢、加快细胞周期进程等多个生物学过程发挥其抗疲劳功效。展开更多
Arbuscular mycorrhizal fungi (AMF) are essential functional microbiology in natural ecosystems. It is very important to research community composition and di- versity of AMF for achieving sustainable development of ...Arbuscular mycorrhizal fungi (AMF) are essential functional microbiology in natural ecosystems. It is very important to research community composition and di- versity of AMF for achieving sustainable development of ecosystems. The paper described several methods of researching the diversity of AMF, especially for molecular techniques, reviewed the application status of these methods in AMF research, and pointed out that the effective combination of morphological and molecular methods could better reveal the biodiversity and ecological functions of AMF in natural ecosystems.展开更多
基金Supported by National Natural Science Foundation of China (30900963)Natural Science Foundation of Yunnan Province (2009ZC072M)Scientific Research Pogram of Yunnan Provincial Educaition Department (09Z0038)~~
文摘Arbuscular mycorrhizal fungi (AMF) are essential functional microbiology in natural ecosystems. It is very important to research community composition and di- versity of AMF for achieving sustainable development of ecosystems. The paper described several methods of researching the diversity of AMF, especially for molecular techniques, reviewed the application status of these methods in AMF research, and pointed out that the effective combination of morphological and molecular methods could better reveal the biodiversity and ecological functions of AMF in natural ecosystems.