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Potent Inhibitors of Acetyltransferase Eis Overcome Kanamycin Resistance in Mycobacterium tuberculosis

Journal Article · · ACS Chemical Biology
 [1];  [2];  [2];  [2];  [2];  [1];  [2]
  1. Centers for Disease Control and Prevention, Atlanta, GA (United States)
  2. Univ. of Kentucky, Lexington, KY (United States)
A major cause of tuberculosis (TB) resistance to the aminoglycoside kanamycin (KAN) is the Mycobacterium tuberculosis (Mtb) acetyltransferase Eis. Upregulation of this enzyme is responsible for inactivation of KAN through acetylation of its amino groups. A 123 000-compound high-throughput screen (HTS) yielded several small-molecule Eis inhibitors that share an isothiazole S,S-dioxide heterocyclic core. These were investigated for their structure–activity relationships. Crystal structures of Eis in complex with two potent inhibitors show that these molecules are bound in the conformationally adaptable aminoglycoside binding site of the enzyme, thereby obstructing binding of KAN for acetylation. Importantly, we demonstrate that several Eis inhibitors, when used in combination with KAN against resistant Mtb, efficiently overcome KAN resistance. Furthermore, this approach paves the way toward development of novel combination therapies against aminoglycoside-resistant TB.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
Center for Chemical Genomics (CCG); Firland Foundation; National Inst. of Health (NIH)
OSTI ID:
1267465
Journal Information:
ACS Chemical Biology, Journal Name: ACS Chemical Biology Journal Issue: 6 Vol. 11; ISSN 1554-8929
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
ENGLISH

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Cited By (6)

Translational control of antibiotic resistance journal July 2019
Mycobacterial Aminoglycoside Acetyltransferases: A Little of Drug Resistance, and a Lot of Other Roles journal January 2019
Comprehensive review of chemical strategies for the preparation of new aminoglycosides and their biological activities journal January 2018
Elucidation of Mycobacterium abscessus aminoglycoside and capreomycin resistance by targeted deletion of three putative resistance genes journal May 2017
The Role of Antibiotic-Target-Modifying and Antibiotic-Modifying Enzymes in Mycobacterium abscessus Drug Resistance journal September 2018
Elucidation of Mycobacterium abscessus aminoglycoside and capreomycin resistance by targeted deletion of three putative resistance genes text January 2017

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