Mycobacterium smegmatis

A Rapid Unraveling of the Activity and Antibiotic Susceptibility of Mycobacteria

Giovanni Dietler, Sandor Kasas, Giovanni Longo, Leonardo Venturelli

The development of antibiotic-resistant bacteria is a worldwide health-related emergency that calls for new tools to study the bacterial metabolism and to obtain fast diagnoses. Indeed, the conventional analysis time scale is too long and affects our abili ...

AMER SOC MICROBIOLOGY2019

Dielectrophoresis as a single cell characterization method for bacteria

Philippe Renaud, John McKinney, Neeraj Dhar, Thomas Michael Braschler, Ana Valero

Real-time, quantitative characterization of cells at single-cell resolution, particularly while maintain- ing their intrinsic properties and without affecting cellular processes, is of primary importance in modern biological assays. Dielectrophoresis is a ...

Iop Publishing Ltd2017

Mycobacterium tuberculosis Resists Stress by Regulating PE19 Expression

John McKinney, Anna De Graff Tischler

Mycobacterium tuberculosis requires the phosphate-sensing signal transduction system Pst/SenX3-RegX3 to resist host immune responses. A Delta pstA1 mutant lacking a Pst phosphate uptake system component is hypersensitive to diverse stress conditions in vit ...

American Society for Microbiology2016

2-Carboxyquinoxalines Kill Mycobacterium tuberculosis through Noncovalent Inhibition of DprE1

Stewart Cole, Neeraj Dhar, Florence Pojer, Ruben Hartkoorn, Gaëlle Séraphine Kolly, Joao Pedro De Almeida Neres

Phenotypic screening of a quinoxaline library against replicating Mycobacterium tuberculosis led to the identification of lead compound Ty38c (3-((4-methoxybenzyl)amino)-6-(trifluoromethyl)quinoxaline-2-carboxylic acid). With an MIC99 and MBC of 3.1 mu M, ...

American Chemical Society2015

Single-Cell Tracking Reveals Antibiotic-Induced Changes in Mycobacterial Energy Metabolism

John McKinney, Muhittin Emre Özdemir, Zeljka Maglica

ATP is a key molecule of cell physiology, but despite its importance, there are currently no methods for monitoring single-cell ATP fluctuations in live bacteria. This is a major obstacle in studies of bacterial energy metabolism, because there is a growin ...

American Society for Microbiology2015

Assessing essentiality of transketolase in Mycobacterium tuberculosis using an inducible protein degradation system

Stewart Cole, Claudia Sala, Anthony Vocat, Gaëlle Séraphine Kolly

Improved genetic tools are required to identify new drug targets in Mycobacterium tuberculosis. To this aim, genetic approaches, targeting either transcription and/or protein degradation, have been developed to appraise gene essentiality and to test the im ...

Wiley-Blackwell2014

Structural Basis for Benzothiazinone-Mediated Killing of Mycobacterium tuberculosis

Paul Joseph Dyson, Stewart Cole, John McKinney, Florence Pojer, Neeraj Dhar, Joao Pedro De Almeida Neres

The benzothiazinone BTZ043 is a tuberculosis drug candidate with nanomolar whole-cell activity. BTZ043 targets the DprE1 catalytic component of the essential enzyme decaprenylphosphoryl-beta-D-ribofuranose-2'-epimerase, thus blocking biosynthesis of arabin ...

American Association for the Advancement of Science2012