MOLECULAR DOCKING, PHARMACOPHORE MODELLING, AND ADME-TOXICITY PREDICTION OF CURCUMIN ANALOG COMPOUNDS AS INFLAMMATORY INHIBITOR ON RHEUMATOID ARTHRITIS

Objective: The objective of this research was to examine the activity and cytokine inhibitory mechanism of curcumin analog compound against multiple protein targets in a patient with rheumatoid arthritis (RA) and identify the absorption, distribution, metabolism, excretion and toxicity (ADME-toxicity). Methods: Identification was carried out by in silico through pharmacophore modelling using Ligand Scout, molecular docking using iGemDock in various protein (tumor necrosis factor alpha (TNF-α), interleukin-1β (IL-1β), transcription factors, signalling kinase, and cyclooxygenase enzyme) and identification of ADME-toxicity based on the physicochemical properties of the compound to simulate, predict and analyze interaction between protein and compound. Results: The obtained results indicated that gamavuton (GVT-0) and penta-gamavuton (PGV) possessed high bioavailability with lower toxicity than curcumin. However, GVT-0, a curcumin analog, possessed high and specific inhibitory activity on tumor necrosis factor-α converting enzyme (TACE) and interleukin converting enzyme (ICE)/Caspase-1. Conclusion: GVT-0 as a curcumin derivate possessed the best inhibitory activity against TNF-α converting enzyme and IL-1β converting enzyme which are the main route of inflammatory mediators in rheumatoid arthritis. In addition, GVT-0 influences less in metabolism of CYP450 enzymes, and has low toxicity.

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