Title |
Identification of Novel Mycobacterial Inhibitors Against Mycobacterial Protein Kinase G
|
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Published in |
Frontiers in Microbiology, July 2018
|
DOI | 10.3389/fmicb.2018.01517 |
Pubmed ID | |
Authors |
Yuichi Kanehiro, Haruaki Tomioka, Jean Pieters, Yutaka Tatano, Hyoji Kim, Hisashi Iizasa, Hironori Yoshiyama |
Abstract |
Protein kinase G (PknG) is a eukaryotic-like serine/threonine kinase that is expressed by Mycobacterium tuberculosis and promotes survival of mycobacteria in host macrophages by suppressing phagosome-lysosome fusion. Thus, compounds showing inhibitory activity against PknG are promising anti-mycobacterial agents. We therefore aimed to develop anti-mycobacterial agents by identifying new PknG inhibitors. A luciferase-based PknG kinase assay was used to screen potential inhibitors of PknG. We found that four compounds, namely AZD7762, R406, R406-free base, and CYC116, inhibited PknG activities. AZD7762, R406, and R406-free base promoted transfer of mycobacteria to lysosomes. These compounds also inhibited survival of M. bovis Bacillus Calmette-Guérin (BCG) inside human macrophages. Furthermore, R406 and R406-free base showed bactericidal activity against BCG in infected human macrophages without cytotoxicity. The PknG inhibitors identified in this study by the luciferase-based PknG kinase assay may be promising leads for the development of anti-mycobacterial agents. |
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Geographical breakdown
Country | Count | As % |
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India | 1 | 25% |
United Kingdom | 1 | 25% |
Switzerland | 1 | 25% |
Unknown | 1 | 25% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 3 | 75% |
Scientists | 1 | 25% |
Mendeley readers
Geographical breakdown
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Unknown | 42 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Master | 7 | 17% |
Student > Bachelor | 7 | 17% |
Student > Ph. D. Student | 7 | 17% |
Student > Doctoral Student | 4 | 10% |
Student > Postgraduate | 2 | 5% |
Other | 4 | 10% |
Unknown | 11 | 26% |
Readers by discipline | Count | As % |
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Immunology and Microbiology | 4 | 10% |
Pharmacology, Toxicology and Pharmaceutical Science | 2 | 5% |
Business, Management and Accounting | 2 | 5% |
Other | 8 | 19% |
Unknown | 13 | 31% |