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Sipos A, Pató J, Székely R, Hartkoorn RC, Kékesi L, Őrfi L, Szántai-Kis C, Mikušová K, Svetlíková Z, Korduláková J, Nagaraja V, Godbole AA, Bush N, Collin F, Maxwell A, Cole ST, Kéri G. Lead selection and characterization of antitubercular compounds using the Nested Chemical Library. Tuberculosis (Edinb) 2015; 95 Suppl 1:S200-6. [PMID: 25801335 DOI: 10.1016/j.tube.2015.02.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Discovering new drugs to treat tuberculosis more efficiently and to overcome multidrug resistance is a world health priority. To find novel antitubercular agents several approaches have been used in various institutions worldwide, including target-based approaches against several validated mycobacterial enzymes and phenotypic screens. We screened more than 17,000 compounds from Vichem's Nested Chemical Library™ using an integrated strategy involving whole cell-based assays with Corynebacterium glutamicum and Mycobacterium tuberculosis, and target-based assays with protein kinases PknA, PknB and PknG as well as other targets such as PimA and bacterial topoisomerases simultaneously. With the help of the target-based approach we have found very potent hits inhibiting the selected target enzymes, but good minimal inhibitory concentrations (MIC) against M. tuberculosis were not achieved. Focussing on the whole cell-based approach several potent hits were found which displayed minimal inhibitory concentrations (MIC) against M. tuberculosis below 10 μM and were non-mutagenic, non-cytotoxic and the targets of some of the hits were also identified. The most active hits represented various scaffolds. Medicinal chemistry-based lead optimization was performed applying various strategies and, as a consequence, a series of novel potent compounds were synthesized. These efforts resulted in some effective potential antitubercular lead compounds which were confirmed in phenotypic assays.
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Affiliation(s)
- Anna Sipos
- MTA-SE Pathobiochemistry Research Group, Department of Medical Chemistry, Semmelweis University, Tűzoltó u. 37-47, H-1094 Budapest, Hungary; Vichem Chemie Research Ltd., Herman Ottó u. 15, H-1022 Budapest, Hungary.
| | - János Pató
- Vichem Chemie Research Ltd., Herman Ottó u. 15, H-1022 Budapest, Hungary
| | - Rita Székely
- Vichem Chemie Research Ltd., Herman Ottó u. 15, H-1022 Budapest, Hungary; Global Health Institute, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Ruben C Hartkoorn
- Global Health Institute, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - László Kékesi
- Vichem Chemie Research Ltd., Herman Ottó u. 15, H-1022 Budapest, Hungary
| | - László Őrfi
- Vichem Chemie Research Ltd., Herman Ottó u. 15, H-1022 Budapest, Hungary; Semmelweis University, Department of Pharmaceutical Chemistry, Hőgyes Endre u. 9, H-1092 Budapest, Hungary
| | - Csaba Szántai-Kis
- Vichem Chemie Research Ltd., Herman Ottó u. 15, H-1022 Budapest, Hungary
| | - Katarína Mikušová
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Mlynská dolina CH-1, Bratislava, Slovakia
| | - Zuzana Svetlíková
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Mlynská dolina CH-1, Bratislava, Slovakia
| | - Jana Korduláková
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Mlynská dolina CH-1, Bratislava, Slovakia
| | - Valakunja Nagaraja
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore 560 012, India
| | - Adwait Anand Godbole
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore 560 012, India
| | - Natassja Bush
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH United Kingdom
| | - Frédéric Collin
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH United Kingdom
| | - Anthony Maxwell
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH United Kingdom
| | - Stewart T Cole
- Global Health Institute, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - György Kéri
- MTA-SE Pathobiochemistry Research Group, Department of Medical Chemistry, Semmelweis University, Tűzoltó u. 37-47, H-1094 Budapest, Hungary; Vichem Chemie Research Ltd., Herman Ottó u. 15, H-1022 Budapest, Hungary.
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