选自[来源未提及]的萜类化合物与基质金属蛋白酶-1催化结构域的相互作用:基于计算机模拟对其抗皱潜力的评估
Interaction of Selected Terpenoids From With Catalytic Domain of Matrix Metalloproteinase-1: An In Silico Assessment of Their Anti-wrinkling Potential.
作者信息
Yasmeen Shagufta, Gupta Promila
机构信息
Agriculture Plant Biotechnology Lab (ARL-316), University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector-16 C, Dwarka, New Delhi-110078, India.
出版信息
Bioinform Biol Insights. 2019 Dec 24;13:1177932219896538. doi: 10.1177/1177932219896538. eCollection 2019.
Matrix metalloproteinase-1 (MMP-1) is a predominant collagenase enzyme that cleaves collagen fibers, contributing to skin wrinkling. Matrix metalloproteinase-1 inhibitors of herbal origin may provide an earnest probability to offer a novel curative approach against MMP-1-mediated collagenolysis, prompted by ultraviolet (UV)-induced overexpression of MMP-1. In this in silico study, we have explored the MMP-1 inhibitory potential of selected terpenoids from extracts. Two triterpenoids (lupeol and betulin), 1 diterpenoid (phytol), and 1 ester derivative of lupeol (lupeol acetate) were studied along with a reference inhibitor (doxycycline) using molecular docking approach. Non covalent interaction between the target ligands was found. Lupeol was found interacting with amino acid (AA) residues in the catalytic domain of MMP-1 with 3 hydrogen bonds (H-bond) formation, phytol with 1 and doxycycline with 2 H-bonds, whereas betulin and lupeol acetate were not able to form any H-bond with the AA residues in the catalytic site of the target protein. However, hydrophobic interaction between these ligands and protein was evident with select residues. The binding affinity of lupeol was highest (binding free energy, Δ = -8.24 kcal/mol), which was greater than reference drug, doxycycline (Δ = -8.05 kcal/mol). Lupeol acetate and phytol displayed a Δ value of -7.12 and -7.06 kcal/mol, respectively, whereas betulin holds less binding affinity for the target receptor (Δ = -4.66 kcal/mol). In silico pharmacokinetic studies demonstrated drug-like properties of the ligand compounds. This study shows that hydroxyl groups present in the ligands play a substantial role in establishing protein ligand interaction via hydrogen bonding.
基质金属蛋白酶-1(MMP-1)是一种主要的胶原酶,可裂解胶原纤维,导致皮肤皱纹产生。源自草药的基质金属蛋白酶-1抑制剂可能为对抗由紫外线(UV)诱导的MMP-1过表达所引发的MMP-1介导的胶原溶解提供一种切实可行的新治疗方法。在这项计算机模拟研究中,我们探索了从提取物中选取的萜类化合物对MMP-1的抑制潜力。使用分子对接方法,研究了两种三萜类化合物(羽扇豆醇和桦木醇)、1种二萜类化合物(叶绿醇)以及羽扇豆醇的1种酯衍生物(乙酸羽扇豆酯),并与一种参考抑制剂(强力霉素)进行了比较。发现了目标配体之间的非共价相互作用。羽扇豆醇与MMP-1催化结构域中的氨基酸(AA)残基相互作用,形成3个氢键,叶绿醇形成1个氢键,强力霉素形成2个氢键,而桦木醇和乙酸羽扇豆酯无法与目标蛋白催化位点的AA残基形成任何氢键。然而,这些配体与蛋白质之间与特定残基的疏水相互作用很明显。羽扇豆醇的结合亲和力最高(结合自由能Δ = -8.24 kcal/mol),高于参考药物强力霉素(Δ = -8.05 kcal/mol)。乙酸羽扇豆酯和叶绿醇的Δ值分别为-7.12和-7.06 kcal/mol,而桦木醇对目标受体的结合亲和力较低(Δ = -4.66 kcal/mol)。计算机模拟药代动力学研究证明了配体化合物具有类药物性质。这项研究表明,配体中存在的羟基在通过氢键建立蛋白质-配体相互作用中起着重要作用。