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Inhibitors in bacterial H2S biogenesis targeting antibiotic resistance and tolerance
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June 11, 2021

Science

Persister cells, which are found in abundance in biofilms, adopt a quiescent state and survive antimicrobial treatments, seeding disease recurrence and incubating new resistance mutations. Building on work implicating the reactive small-molecule hydrogen sulfide in bacterial defense against antibiotics, Shatalin et al. conducted a structure-based screen for inhibitors of a bacterial hydrogen sulfide–producing enzyme and found a group of inhibitors that act through an allosteric mechanism (see the Perspective by Mah). These inhibitors potentiated bactericidal antibiotics in vitro and in mouse infection models. They also suppressed persister bacteria and disrupted biofilm formation. This strategy of taking out persister cells may be promising for treating recalcitrant infections and holding the line against drug-resistant bacteria.

K. Shatalin , A. Nuthanakanti, A Kaushik, D. Shishov, A. Peselis, I. Shamovsky , B. Pani, M. Lechpammer, N. Vasilyev, E. Shatalina, D. Rebatchouk, A. Mironov, P. Fedichev, A. Serganov And E. Nudler

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