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© Giulia Manina, Institut Pasteur
Mycobacterium tuberculosis dual fluorescent reporter of metabolic activity. Green (active bacilli) and red fluorescence (quiescent bacilli) are merged, 100X magnification.
Publication : Science (New York, N.Y.)

Benzothiazinones kill Mycobacterium tuberculosis by blocking arabinan synthesis

Team: Microbial Individuality and Infection
Team: Integrated Mycobacterial Pathogenomics
Member: Giulia Manina
Member: Roland Brosch
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Science (New York, N.Y.) - 19 Mar 2009

Makarov V, Manina G, Mikusova K, Möllmann U, Ryabova O, Saint-Joanis B, Dhar N, Pasca MR, Buroni S, Lucarelli AP, Milano A, De Rossi E, Belanova M, Bobovska A, Dianiskova P, Kordulakova J, Sala C, Fullam E, Schneider P, McKinney JD, Brodin P, Christophe T, Waddell S, Butcher P, Albrethsen J, Rosenkrands I, Brosch R, Nandi V, Bharath S, Gaonkar S, Shandil RK, Balasubramanian V, Balganesh T, Tyagi S, Grosset J, Riccardi G, Cole ST

Link to Pubmed [PMID] – 19299584

Science 2009 May;324(5928):801-4

New drugs are required to counter the tuberculosis (TB) pandemic. Here, we describe the synthesis and characterization of 1,3-benzothiazin-4-ones (BTZs), a new class of antimycobacterial agents that kill Mycobacterium tuberculosis in vitro, ex vivo, and in mouse models of TB. Using genetics and biochemistry, we identified the enzyme decaprenylphosphoryl-beta-d-ribose 2′-epimerase as a major BTZ target. Inhibition of this enzymatic activity abolishes the formation of decaprenylphosphoryl arabinose, a key precursor that is required for the synthesis of the cell-wall arabinans, thus provoking cell lysis and bacterial death. The most advanced compound, BTZ043, is a candidate for inclusion in combination therapies for both drug-sensitive and extensively drug-resistant TB.