Stewart Cole

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Genomic Characterization ofMycobacterium lepraeto Explore Transmission Patterns Identifies New Subtype in Bangladesh

Stewart Cole, Andrej Benjak, Charlotte Avanzi

Mycobacterium leprae, the causative agent of leprosy, is an unculturable bacterium with a considerably reduced genome (3.27 Mb) compared to homologues mycobacteria from the same ancestry. In 2001, the genome ofM. lepraewas first described and subsequently ...

FRONTIERS MEDIA SA2020

Population Genomics of Mycobacterium leprae Reveals a New Genotype in Madagascar and the Comoros

Stewart Cole, Andrej Benjak, Charlotte Avanzi, Philippe Busso, Pushpendra Singh, Thyago Leal Calvo

Human settlement of Madagascar traces back to the beginning of the first millennium with the arrival of Austronesians from Southeast Asia, followed by migrations from Africa and the Middle East. Remains of these different cultural, genetic, and linguistic ...

2020

Synthesis and Structure-Activity Relationship Studies of C2-Modified Analogs of the Antimycobacterial Natural Product Pyridomycin

Stewart Cole, Ruben Hartkoorn, Anthony Vocat

A series of derivatives of the antimycobacterial natural product pyridomycin have been prepared with the C2 side chain attached to the macrocyclic core structure by a C-C single bond, in place of the synthetically more demanding enol ester double bond foun ...

AMER CHEMICAL SOC2020

High resolution CryoEM structure of the ring-shaped virulence factor EspB from Mycobacterium tuberculosis

Stewart Cole, Florence Pojer, Jérémie Piton

The EspB protein of Mycobacterium tuberculosis is a 60 kDa virulence factor, implicated in conjugation and exported by the ESX-1 system of which it may also be a component. Previous attempts to obtain high-resolution maps of EspB by cryo-electron microscop ...

2020

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A case of Mycobacterium leprae rifampin resistance after irregular antile- prosy treatments since 1971 is reported. Whole-genome sequencing from four longi- tudinal samples indicated relapse due to acquired rifampin resistance and not to re- infection with ...

AMER SOC MICROBIOLOGY2020

Advanced Quantification Methods To Improve the 18b Dormancy Model for Assessing the Activity of Tuberculosis Drugs In Vitro

Stewart Cole, Claudia Sala

One of the reasons for the lengthy tuberculosis (TB) treatment is the difficulty to treat the nonmultiplying mycobacterial subpopulation. In order to assess the ability of (new) TB drugs to target this subpopulation, we need to incorporate dormancy models ...

AMER SOC MICROBIOLOGY2020

Multicenter analysis of sputum microbiota in tuberculosis patients

Stewart Cole, Jacques Rougemont, Marion Leleu, Claudia Sala, Andrej Benjak, Philippe Busso

The impact of tuberculosis and of anti-tuberculosis therapy on composition and modification of human lung microbiota has been the object of several investigations. However, no clear outcome has been presented so far and the relationship betweenM.tuberculos ...

2020

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The emergence of Mycobacterium tuberculosis strains resistant to current first-line antibiotic regimens constitutes a major global health threat. New treatments against multidrug-resistant tuberculosis (MDR-TB) are thus eagerly needed in particular in coun ...

PUBLIC LIBRARY SCIENCE2019

Monitoring Tuberculosis Drug Activity in Live Animals by Using Near-Infrared Fluorescence Imaging

Stewart Cole, Raphael Christopher Sommer

Worldwide, tuberculosis (TB) is the leading cause of death due to infection with a single pathogenic agent, Mycobacterium tuberculosis. In the absence of an effective vaccine, new, more powerful antibiotics are required to halt the growing spread of multid ...

AMER SOC MICROBIOLOGY2019

British Red Squirrels Remain the Only Known Wild Rodent Host for Leprosy Bacilli

Stewart Cole, Charlotte Avanzi, Philippe Busso

Eurasian red squirrels (Sciurus vulgaris) in the British Isles are the most recently discovered animal reservoir for the leprosy bacteria Mycobacterium leprae and Mycobacterium lepromatosis. Initial data suggest that prevalence of leprosy infection is vari ...

FRONTIERS MEDIA SA2019