Olofinsan Kolawole, Olawale Femi, Karigidi Kayode, Shityakov Sergey, Iwaloye Opeyemi
Department of Biochemistry, Nile University of Nigeria, Abuja, Nigeria.
Department of Biochemistry, University of Lagos, Lagos, Nigeria.
J Biomol Struct Dyn. 2023;41(22):12838-12862. doi: 10.1080/07391102.2023.2168758. Epub 2023 Jan 23.
Tumor Necrosis Factor Alpha Converting Enzyme (TACE) mediates inflammatory disorder and contributes to the pathophysiology of a variety of illnesses, such as chronic inflammation and cancer. This study identified metabolites in solvent extracts of as putative TACE inhibitors due to the plant's known anti-inflammatory properties. HPLC-MS/GCMS analysis was used to characterize tentative phytochemicals from . The identified metabolites (n = 123) were docked with TACE to reveal the lead compounds. Binding free energy, ADMET prediction, molecular dynamics simulation at 100 ns, and DFT calculation were further conducted. The results revealed that contains sterol, phenols, alkaloids, terpenes and flavonoids. The FTIR shows that the extracts had peaks that correspond to the presence of different functional groups. The quantum polarized ligand docking (QPLD) analysis identified compound (n = 3) with binding affinity higher than standard compound IK-682. The hits also had modest ADMET profiles, interacted with essential residues within TACE binding pockets, and formed stable complexes with the protein. The 100 ns MD simulation shows that the compounds formed fairly stable interactions and complex with the protein as evidenced through RMSF, RMSD and MM-GBA results. The HOMO/LUMO, global descriptive molecular electrostatic potential Fukui function aid in the identification of the compounds' atomic sites prone to electrophilic/neutrophilic attacks, and non-covalent interactions. This study suggests that bioactive compounds are capable of mitigating inflammation by inhibiting TACE.Communicated by Ramaswamy H. Sarma.
肿瘤坏死因子α转换酶(TACE)介导炎症紊乱,并在多种疾病的病理生理学过程中发挥作用,如慢性炎症和癌症。由于该植物具有已知的抗炎特性,本研究确定其溶剂提取物中的代谢产物为潜在的TACE抑制剂。采用高效液相色谱-质谱联用/气相色谱-质谱联用分析来表征该植物初步的植物化学物质。将鉴定出的代谢产物(n = 123)与TACE进行对接以揭示先导化合物。进一步进行了结合自由能、药物代谢动力学预测、100纳秒的分子动力学模拟以及密度泛函理论计算。结果表明,该植物含有甾醇、酚类、生物碱、萜类和黄酮类化合物。傅里叶变换红外光谱显示提取物具有与不同官能团存在相对应的峰。量子极化配体对接(QPLD)分析确定了3种化合物,其结合亲和力高于标准化合物IK - 682。这些命中化合物还具有适度的药物代谢动力学特征,与TACE结合口袋内的关键残基相互作用,并与蛋白质形成稳定的复合物。100纳秒的分子动力学模拟表明,通过均方根波动(RMSF)、均方根偏差(RMSD)和分子力学广义Born表面面积(MM - GBA)结果证明,这些化合物与蛋白质形成了相当稳定的相互作用和复合物。最高占据分子轨道/最低未占据分子轨道(HOMO/LUMO)、全局描述性分子静电势福井函数有助于确定化合物易于发生亲电/亲核攻击的原子位点以及非共价相互作用。本研究表明,该植物的生物活性化合物能够通过抑制TACE来减轻炎症。由拉马斯瓦米·H·萨尔马传达。