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Kazakova O, Racoviceanu R, Petrova A, Mioc M, Militaru A, Udrescu L, Udrescu M, Voicu A, Cummings J, Robertson G, Ordway DJ, Slayden RA, Șoica C. New Investigations with Lupane Type A-Ring Azepane Triterpenoids for Antimycobacterial Drug Candidate Design. Int J Mol Sci 2021; 22:12542. [PMID: 34830423 PMCID: PMC8621456 DOI: 10.3390/ijms222212542] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/16/2021] [Accepted: 11/17/2021] [Indexed: 12/02/2022] Open
Abstract
Twenty lupane type A-ring azepano-triterpenoids were synthesized from betulin and its related derivatives and their antitubercular activity against Mycobacterium tuberculosis, mono-resistant MTB strains, and nontuberculous strains Mycobacterium abscessus and Mycobacterium avium were investigated in the framework of AToMIc (Anti-mycobacterial Target or Mechanism Identification Contract) realized by the Division of Microbiology and Infectious Diseases, NIAID, National Institute of Health. Of all the tested triterpenoids, 17 compounds showed antitubercular activity and 6 compounds were highly active on the H37Rv wild strain (with MIC 0.5 µM for compound 7), out of which 4 derivatives also emerged as highly active compounds on the three mono-resistant MTB strains. Molecular docking corroborated with a machine learning drug-drug similarity algorithm revealed that azepano-triterpenoids have a rifampicin-like antitubercular activity, with compound 7 scoring the highest as a potential M. tuberculosis RNAP potential inhibitor. FIC testing demonstrated an additive effect of compound 7 when combined with rifampin, isoniazid and ethambutol. Most compounds were highly active against M. avium with compound 14 recording the same MIC value as the control rifampicin (0.0625 µM). The antitubercular ex vivo effectiveness of the tested compounds on THP-1 infected macrophages is correlated with their increased cell permeability. The tested triterpenoids also exhibit low cytotoxicity and do not induce antibacterial resistance in MTB strains.
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Affiliation(s)
- Oxana Kazakova
- Ufa Institute of Chemistry, The Ufa Federal Research Centre, The Russian Academy of Sciences, 71, Pr. Oktyabrya, 450054 Ufa, Russia;
| | - Roxana Racoviceanu
- Department II-Pharmaceutical Chemistry, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timişoara, 2 Eftimie Murgu Sq., 300041 Timişoara, Romania; (R.R.); (M.M.); (C.Ș.)
- Res Ctr Pharmacotoxicol Evaluat, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq. 2, 300041 Timisoara, Romania
| | - Anastasiya Petrova
- Ufa Institute of Chemistry, The Ufa Federal Research Centre, The Russian Academy of Sciences, 71, Pr. Oktyabrya, 450054 Ufa, Russia;
| | - Marius Mioc
- Department II-Pharmaceutical Chemistry, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timişoara, 2 Eftimie Murgu Sq., 300041 Timişoara, Romania; (R.R.); (M.M.); (C.Ș.)
- Res Ctr Pharmacotoxicol Evaluat, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq. 2, 300041 Timisoara, Romania
| | - Adrian Militaru
- Department of Computer and Information Technology, University Politehnica of Timişoara, 2 Vasile Pârvan Blvd., 300223 Timişoara, Romania; (A.M.); (M.U.)
| | - Lucreția Udrescu
- Department I-Drug Analysis, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timişoara, 2 Eftimie Murgu Sq., 300041 Timişoara, Romania;
| | - Mihai Udrescu
- Department of Computer and Information Technology, University Politehnica of Timişoara, 2 Vasile Pârvan Blvd., 300223 Timişoara, Romania; (A.M.); (M.U.)
| | - Adrian Voicu
- Department III-Informatics and Medical Biostatistics, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timişoara, 2 Eftimie Murgu Sq., 300041 Timişoara, Romania
| | - Jason Cummings
- Department of Microbiology, Immunology & Pathology, Colorado State University, 1619 Campus Delivery, Fort Collins, CO 80523, USA; (J.C.); (G.R.); (D.J.O.); (R.A.S.)
| | - Gregory Robertson
- Department of Microbiology, Immunology & Pathology, Colorado State University, 1619 Campus Delivery, Fort Collins, CO 80523, USA; (J.C.); (G.R.); (D.J.O.); (R.A.S.)
| | - Diane J. Ordway
- Department of Microbiology, Immunology & Pathology, Colorado State University, 1619 Campus Delivery, Fort Collins, CO 80523, USA; (J.C.); (G.R.); (D.J.O.); (R.A.S.)
| | - Richard A. Slayden
- Department of Microbiology, Immunology & Pathology, Colorado State University, 1619 Campus Delivery, Fort Collins, CO 80523, USA; (J.C.); (G.R.); (D.J.O.); (R.A.S.)
| | - Codruța Șoica
- Department II-Pharmaceutical Chemistry, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timişoara, 2 Eftimie Murgu Sq., 300041 Timişoara, Romania; (R.R.); (M.M.); (C.Ș.)
- Res Ctr Pharmacotoxicol Evaluat, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq. 2, 300041 Timisoara, Romania
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