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Abstract
Background: Tuberculosis (TB) is caused by *Mycobacterium tuberculosis*, and Multiple Drug-Resistant Tuberculosis (MDR-TB) arises from resistance to first-line treatments like Rifampicin and Isoniazid. Since current TB medications have been used for over four decades, discovering new drug candidates is critical. This research focuses on herbal compounds—Black cumin (*Nigella sativa*), Sambiloto (*Andrographis paniculata*), and propolis—as potential inhibitors of *M. tuberculosis* by targeting DHFR. The objective of the study is to predict the activity of these herbal compounds prior to in vitro and in vivo testing.
Methods: This study employed computational tools, including Molegro Virtual Docking (MVD) and Molecular Dynamics (MD), to assess the interactions of the herbal compounds with DHFR (PDB ID: 2CIG). Pharmacokinetic predictions were also conducted to evaluate the absorption and toxicity of the compounds.
Results: Molecular docking and MD simulations indicated that Andrographolide, Thymoquinone, and Caffeic Acid Phenethyl Ester effectively inhibited the growth of *M. tuberculosis*. The analysis revealed favorable binding interactions and conformational changes in DHFR, with significant activity observed for Thymoquinone.
Conclusion: This study suggests that Andrographolide, Thymoquinone, and Caffeic Acid Phenethyl Ester may serve as promising candidates for further development as anti-tuberculosis drugs. Subsequent in vitro and in vivo studies are warranted to validate their therapeutic potential.
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