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Potentiating antibiotic efficacy via perturbation of non-essential gene expression

Journal Article · · Communications Biology
 [1];  [2];  [2];  [2];  [2];  [3]
  1. University of Colorado, Boulder, CO (United States); Joint Bioenergy Institute, Emeryville, CA (United States); Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
  2. University of Colorado, Boulder, CO (United States)
  3. University of Colorado, Boulder, CO (United States); Antimicrobial Regeneration Consortium, Boulder, CO (United States)

Proliferation of multidrug-resistant (MDR) bacteria poses a threat to human health, requiring new strategies. Here we propose using fitness neutral gene expression perturbations to potentiate antibiotics. We systematically explored 270 gene knockout-antibiotic combinations in Escherichia coli, identifying 90 synergistic interactions. Identified gene targets were subsequently tested for antibiotic synergy on the transcriptomic level via multiplexed CRISPR-dCas9 and showed successful sensitization of E. coli without a separate fitness cost. These fitness neutral gene perturbations worked as co-therapies in reducing a Salmonella enterica intracellular infection in HeLa. Finally, these results informed the design of four antisense peptide nucleic acid (PNA) co-therapies, csgD, fnr, recA and acrA, against four MDR, clinically isolated bacteria. PNA combined with sub-minimal inhibitory concentrations of trimethoprim against two isolates of Klebsiella pneumoniae and E. coli showed three cases of re-sensitization with minimal fitness impacts. Our results highlight a promising approach for extending the utility of current antibiotics.

Research Organization:
Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF); National Science Foundation Graduate Research Fellowship; DARPA Young Faculty Award
Grant/Contract Number:
NA0003525
OSTI ID:
2471775
Journal Information:
Communications Biology, Journal Name: Communications Biology Journal Issue: 1 Vol. 4; ISSN 2399-3642
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

References (63)

Annual Report of the Chief Medical Officer: infection and the rise of antimicrobial resistance journal May 2013
The mar regulon: multiple resistance to antibiotics and other toxic chemicals journal October 1999
The dinB Gene Encodes a Novel E. coli DNA Polymerase, DNA Pol IV, Involved in Mutagenesis journal August 1999
Phenotypic Landscape of a Bacterial Cell journal January 2011
Creeping baselines and adaptive resistance to antibiotics journal February 2011
Combination drugs, an emerging option for antibacterial therapy journal December 2007
Sequence-Specific Peptide Nucleic Acid-Based Antisense Inhibitors of TEM-1 β-Lactamase and Mechanism of Adaptive Resistance journal May 2015
Gene Expression Variability Underlies Adaptive Resistance in Phenotypically Heterogeneous Bacterial Populations journal September 2015
AcrAB–TolC Inhibition by Peptide-Conjugated Phosphorodiamidate Morpholino Oligomers Restores Antibiotic Activity in Vitro and in Vivo journal May 2019
CRISPR Perturbation of Gene Expression Alters Bacterial Fitness under Stress and Reveals Underlying Epistatic Constraints journal September 2016
Peptide Nucleic Acid. A Molecule with Two Identities journal July 1999
Bactericidal antisense effects of peptide–PNA conjugates journal April 2001
Construction of Escherichia coli K-12 in-frame, single-gene knockout mutants the Keio collection journal February 2006
Structure of the AcrAB–TolC multidrug efflux pump journal April 2014
Exploiting CRISPR-Cas nucleases to produce sequence-specific antimicrobials journal October 2014
Combating bacteria and drug resistance by inhibiting mechanisms of persistence and adaptation journal August 2007
β-lactam antibiotics promote bacterial mutagenesis via an RpoS-mediated reduction in replication fidelity journal March 2013
Functional classification of drugs by properties of their pairwise interactions journal March 2006
Photoexcited quantum dots for killing multidrug-resistant bacteria journal January 2016
Fast gapped-read alignment with Bowtie 2 journal March 2012
CRISPR interference (CRISPRi) for sequence-specific control of gene expression journal October 2013
Exploring protein fitness landscapes by directed evolution journal December 2009
A CRISPRi screen in E. coli reveals sequence-specific toxicity of dCas9 journal May 2018
Multiplexed deactivated CRISPR-Cas9 gene expression perturbations deter bacterial adaptation by inducing negative epistasis journal September 2018
Facile accelerated specific therapeutic (FAST) platform develops antisense therapies to counter multidrug-resistant bacteria journal March 2021
Antisense PNA Accumulates in Escherichia coli and Mediates a Long Post-antibiotic Effect journal August 2007
Accelerated evolution of resistance in multidrug environments journal September 2008
Targeting a bacterial stress response to enhance antibiotic action journal August 2009
Antibiotics induce redox-related physiological alterations as part of their lethality journal May 2014
Transcriptome-based design of antisense inhibitors potentiates carbapenem efficacy in CRE Escherichia coli journal November 2020
Long-Term Experimental Evolution in Escherichia coli. I. Adaptation and Divergence During 2,000 Generations journal December 1991
The Sequence Alignment/Map format and SAMtools journal June 2009
BEDTools: a flexible suite of utilities for comparing genomic features journal January 2010
STRING v10: protein–protein interaction networks, integrated over the tree of life journal October 2014
The EcoCyc database: reflecting new knowledge about Escherichia coli K-12 journal November 2016
Overexpression of marA, soxS , or acrAB produces resistance to triclosan in laboratory and clinical strains of Escherichia coli journal September 1998
Potentiating antibiotics in drug-resistant clinical isolates via stimuli-activated superoxide generation journal October 2017
SOS Response Induction by ß-Lactams and Bacterial Defense Against Antibiotic Lethality journal September 2004
Multidrug evolutionary strategies to reverse antibiotic resistance journal December 2015
Cloning, Nucleotide Sequencing, and Analysis of the AcrAB-TolC Efflux Pump of Enterobacter cloacae and Determination of Its Involvement in Antibiotic Resistance in a Clinical Isolate journal September 2007
Antibiotic Sensitivity Profiles Determined with an Escherichia coli Gene Knockout Collection: Generating an Antibiotic Bar Code journal January 2010
Involvement of the AcrAB-TolC Efflux Pump in the Resistance, Fitness, and Virulence of Enterobacter cloacae journal January 2012
Killing by Ampicillin and Ofloxacin Induces Overlapping Changes in Escherichia coli Transcription Profile journal March 2004
Functional Genomic Study of Exogenous n-Butanol Stress in Escherichia coli journal January 2010
Role of DNA Polymerase IV in Escherichia coli SOS Mutator Activity journal November 2006
Complete and SOS-Mediated Response of Staphylococcus aureus to the Antibiotic Ciprofloxacin journal November 2006
Determination of Antibiotic Hypersensitivity among 4,000 Single-Gene-Knockout Mutants of Escherichia coli journal July 2008
Functional Genomics: Expression Analysis ofEscherichia coli Growing on Minimal and Rich Media journal October 1999
Draft Genome Sequence for a Clinical Isolate of Vancomycin-Resistant Enterococcus faecalis journal June 2016
Draft Genome Sequences of Clinical Isolates of Multidrug-Resistant Acinetobacter baumannii journal February 2017
Programmable Removal of Bacterial Strains by Use of Genome-Targeting CRISPR-Cas Systems journal January 2014
Quinolone Resistance Reversion by Targeting the SOS Response journal November 2017
Transcriptome-Level Signatures in Gene Expression and Gene Expression Variability during Bacterial Adaptive Evolution journal February 2017
Mechanisms of Solvent Tolerance in Gram-Negative Bacteria journal October 2002
Inhibition of Mutation and Combating the Evolution of Antibiotic Resistance journal May 2005
Quantifying the Determinants of Evolutionary Dynamics Leading to Drug Resistance journal November 2015
Sequence-Specific Targeting of Bacterial Resistance Genes Increases Antibiotic Efficacy journal September 2016
Mapping the Environmental Fitness Landscape of a Synthetic Gene Circuit journal April 2012
Positive Epistasis Drives the Acquisition of Multidrug Resistance journal July 2009
Genomic Library Screens for Genes Involved in n-Butanol Tolerance in Escherichia coli journal March 2011
Parallel Mapping of Antibiotic Resistance Alleles in Escherichia coli journal January 2016
Statistical determination of synergy based on Bliss definition of drugs independence journal November 2019
DinB Upregulation Is the Sole Role of the SOS Response in Stress-Induced Mutagenesis in Escherichia coli journal March 2009