Table 1.
Antimycobacterial activities (μM) of top NTM hits identified in the Pathogen Box screen.
| Compound ID | M. tuberculosis | M. abscessus | M. avium | Chemical class* | Possible target* | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| MIC50 | MIC90 | Reported MICb | MIC50 | MIC90 | Fold kill at MIC90 | MIC50 | MIC90 | Fold kill at MIC90 | |||
| MMV688756 | <0.2 | 1.2 | 1.2 | 4.2 | 25 | NK | 0.4 | 4 | NK | Oxazolidinone | 23S rRNA |
| MMV688327a | 0.5 | 2 | 0.3 | 3.8 | 13 | NK | 4 | 35 | NK | Oxazolidinone | 23S rRNA |
| MMV688508 | <0.2 | 0.3 | 0.4 | 2.2 | 12 | NK | 0.6 | 8 | NK | Oxazolidinone | 23S rRNA |
| MMV687146 | <0.2 | <0.2 | <0.024 | 0.8 | 2 | 100 | 3 | 9 | NK | Indolecarboxamide | MmpL3 |
| MMV688846a | 0.2 | 0.6 | 0.4 | 0.7 | 1.5 | 10 | 20 | >50 | NK | Piperidinol | MmpL3 |
| MMV687730 | <0.2 | <0.2 | 0.05 | 4 | 8.5 | 10 | 5 | 22 | NK | Benzimidazole | FtsZ |
| MMV687812a | <0.2 | 2.2 | 1.2 | 6 | 12∧ | NK∧ | 25 | >50 | NK | Aminopyrazinamide | GyrB |
| MMV675968 | <0.2 | 4 | ND | 10.5 | 35 | NK | 0.2 | 3 | NK | Diaminopyrimidine | DHFR |
| MMV688845 | <0.2 | 1.7 | 1.2 | 1.5 | 7 | 10 | 0.6 | 3 | NK | Phenylalaninamide | RNA polymerase |
| MMV688844a | 0.2 | 2.8 | 0.4 | 4.5 | 11 | 100 | 2 | 6# | NK# | Piperidine | ABC transporter |
| clarithromycin | ND | ND | ND | <0.2 | 0.5 | NK | <0.2 | 0.6 | NK | Macrolide | 23S rRNA |
“M. abscessus-specific” hits according to primary screen cut-off.
MIC in M. tuberculosis as reported by MMV (website http://www.pathogenbox.org/).
MMV687812, for M. abscessus 80% growth inhibition was achieved at 12 μM, MIC90 could not be reached up to 50 μM.
MMV688844, for M. avium 80% growth inhibition was achieved at 6 μM, MIC90 could not be reached up to 50 μM.
See discussion section for references.
MIC50, MIC90 refers to the compound concentration that inhibits 50 and 90% of bacterial growth, respectively.
NK, “no kill,” i.e., CFU reduction < 10-fold at MIC90; ND, not determined.