目的:研究赤芍抗流感病毒的作用机制与分子基础,为利用中药赤芍开发出安全有效的抗流感药物提供理论依据。方法:基于计算机虚拟筛选的方法,以单味中药赤芍的119个化学成分为对象,选取5个目前与流感治疗密切相关的靶点蛋白作为受体,采用S...目的:研究赤芍抗流感病毒的作用机制与分子基础,为利用中药赤芍开发出安全有效的抗流感药物提供理论依据。方法:基于计算机虚拟筛选的方法,以单味中药赤芍的119个化学成分为对象,选取5个目前与流感治疗密切相关的靶点蛋白作为受体,采用SYBYL分子对接的方法,以Total Score结合打分为标准筛选出得分最高的分子并观察其MOLCAD展示的与5个流感病毒靶蛋白的表面疏水性和氢键供体与受体区域,借助Discovery Studio 2016软件对其进行相互作用的分析,预测其结合模式及亲和力。结果:通过SYBYL分子对接的方法,观察到赤芍119个成分与流感相关受体分子结合Total Score打分普遍较高,并均超过其与自身配体结合打分,且发现小分子与受体分子结合,可产生多种分子间作用力,使小分子牢固地结合在活性位点。结论:基于计算机虚拟筛选方法中的分子对接技术,发现赤芍具有很好地发挥多靶点抗流感病毒的优势,是一种具有开发潜能的抗流感中药。展开更多
Myasthenia Gravis (MG) is an organ specific autoimmune disease mediated by autoantibodies (AChR Ab) against the acetylcholine receptor (AChR). Literature reported that the AChR Ab can be removed by absorbent linked w...Myasthenia Gravis (MG) is an organ specific autoimmune disease mediated by autoantibodies (AChR Ab) against the acetylcholine receptor (AChR). Literature reported that the AChR Ab can be removed by absorbent linked with tryptophan. It was studied in detail in our lab. With the aid of computer, we docked some ligands into AChR Ab, and the results from scores of docking under different generations showed that there was no specific binding between tryptophan and scFv fragment just as the binding between antigen-antibody. The interaction between Trp and immunoglobulin was a broad-spectrum binding.展开更多
文摘目的:研究赤芍抗流感病毒的作用机制与分子基础,为利用中药赤芍开发出安全有效的抗流感药物提供理论依据。方法:基于计算机虚拟筛选的方法,以单味中药赤芍的119个化学成分为对象,选取5个目前与流感治疗密切相关的靶点蛋白作为受体,采用SYBYL分子对接的方法,以Total Score结合打分为标准筛选出得分最高的分子并观察其MOLCAD展示的与5个流感病毒靶蛋白的表面疏水性和氢键供体与受体区域,借助Discovery Studio 2016软件对其进行相互作用的分析,预测其结合模式及亲和力。结果:通过SYBYL分子对接的方法,观察到赤芍119个成分与流感相关受体分子结合Total Score打分普遍较高,并均超过其与自身配体结合打分,且发现小分子与受体分子结合,可产生多种分子间作用力,使小分子牢固地结合在活性位点。结论:基于计算机虚拟筛选方法中的分子对接技术,发现赤芍具有很好地发挥多靶点抗流感病毒的优势,是一种具有开发潜能的抗流感中药。
基金This research work was supported by The National Key Project of Fundamental Research and Advances(G1999064707).
文摘Myasthenia Gravis (MG) is an organ specific autoimmune disease mediated by autoantibodies (AChR Ab) against the acetylcholine receptor (AChR). Literature reported that the AChR Ab can be removed by absorbent linked with tryptophan. It was studied in detail in our lab. With the aid of computer, we docked some ligands into AChR Ab, and the results from scores of docking under different generations showed that there was no specific binding between tryptophan and scFv fragment just as the binding between antigen-antibody. The interaction between Trp and immunoglobulin was a broad-spectrum binding.
