Next-Generation Antibiotic Strategies Against Drug-Resistant Bacteria

A special issue of Pharmaceuticals (ISSN 1424-8247). This special issue belongs to the section "Pharmacology".

Deadline for manuscript submissions: 25 September 2025 | Viewed by 677

Special Issue Editors


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Guest Editor
School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, NY, USA
Interests: antimicrobial resistance; gram-negative pathogens; pharmacology; molecular biology

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Guest Editor
Division of Clinical and Translational Therapeutics, Department of Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, NY, USA
Interests: antimicrobial resistance; phage therapy; pharmacometrics; precision medicine; PK/PD; gram-negative bacteria

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Guest Editor
Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, USA
Interests: oncology; hematology; chemotherapy; infectious diseases; immunotherapy

Special Issue Information

Dear Colleagues,

The Special Issue “Next-Generation Antibiotic Strategies Against Drug-Resistant Bacteria” aims to highlight innovative approaches to combat the rising global threat of antimicrobial resistance (AMR). This Issue will cover cutting-edge strategies including, but not limted to ,novel antibiotic development, repurposed therapeutics, synergistic combination regimens, and advanced drug delivery systems. Emphasis will also be placed on non-traditional approaches such as bacteriophage therapy, antimicrobial peptides, CRISPR-based antimicrobials, and anti-virulence strategies targeting bacterial persistence and biofilms. Additionally, the Issue welcomes studies on pharmacokinetic/pharmacodynamic (PK/PD) optimization, transcriptomic and metabolomic insights into resistance mechanisms, and the role of machine learning and artificial intelligence in accelerating antibiotic discovery and resistance prediction. By bringing together multidisciplinary perspectives, this Issue aims to foster the development of effective, sustainable, and clinically relevant solutions to address the evolving challenges posed by multidrug-resistant (MDR), extensively drug-resistant (XDR), and pan-drug-resistant (PDR) bacterial pathogens.

Antimicrobial resistance (AMR) remains one of the greatest global threats to public health, complicating the treatment of bacterial infections and increasing morbidity, mortality, and healthcare costs. The rapid emergence of multidrug-resistant (MDR), extensively drug-resistant (XDR), and pan-drug-resistant (PDR) pathogens, coupled with the phenomena of heteroresistance and bacterial persistence, presents significant challenges in combating AMR. These persister cells, capable of surviving antibiotic treatment without genetic resistance, contribute to chronic infections and relapses, making effective eradication even more difficult. Despite advancements in drug discovery, the pipeline for novel antibiotics remains limited, necessitating innovative strategies to optimize existing treatments and develop next-generation therapeutics.

In response to these challenges, the journal Pharmaceuticals invites submissions for a Special Issue on “Next-Generation Antibiotic Strategies Against Drug-Resistant Bacteria”. This issue will focus on novel and repurposed antibiotics, synergistic combination therapies, antimicrobial adjuvants, pharmacokinetic/pharmacodynamic (PK/PD) optimization, and non-traditional approaches such as bacteriophage therapy and anti-virulence strategies.

We welcome both original research and comprehensive reviews exploring innovative pharmaceutical solutions to address AMR. We look forward to your valuable contributions.

Dr. Jan Naseer Kaur
Dr. Nicholas Smith
Dr. Parikshit Padhi
Guest Editors

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Keywords

  • persisters and AMR
  • combination pharmacotherapy
  • drug repurposing
  • antibiotic adjuvants
  • next-generation beta lactamase inhibitors
  • small molecule inhibitors
  • bacteriophage therapy
  • peptides and CRISPR-based antimicrobials
  • novel therapeutics
  • heteroresistance

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Published Papers (1 paper)

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Research

12 pages, 1265 KiB  
Article
Pharmacodynamic Evaluation of Adjuvant Targets: Low Molecular Weight PBP7/8 Effects on β-Lactam Activity Against Carbapenem-Resistant Acinetobacter Baumannii
by Brian M. Ho, Jingxiu Jin, Jacob T. Sanborn, Thomas D. Nguyen, Navaldeep Singh, Christina Cheng, Nader N. Nasief, Ulrike Carlino-MacDonald, Brian T. Tsuji, Yanan Zhao, Liang Chen, Bartolome Moya, Thomas A. Russo and Nicholas M. Smith
Pharmaceuticals 2025, 18(6), 918; https://doi.org/10.3390/ph18060918 - 18 Jun 2025
Viewed by 450
Abstract
Background/Objectives: The increasing occurrence of carbapenem resistance A. baumannii (CRAB) has forced clinicians to seek out alternative options with activity against CRAB. CRAB with inactivated PBP7/8 has been shown to result in an increased outer membrane permeability and could serve as a potential [...] Read more.
Background/Objectives: The increasing occurrence of carbapenem resistance A. baumannii (CRAB) has forced clinicians to seek out alternative options with activity against CRAB. CRAB with inactivated PBP7/8 has been shown to result in an increased outer membrane permeability and could serve as a potential new adjuvant target. Methods: Two isogenic clinical isolates of A. baumannii HUMC1 were utilized (WT and HUMC1 ΔPBP7/8). Static concentration time-kill assays were performed against both isolates with escalating exposures to antibiotics. The resulting data were modeled using the Monolix software suite to capture parameters related to bacterial killing and PBP7/8 synergism. The model results were used to prospectively simulate clinically relevant antibiotic dosing of three antibiotics under physiological conditions and were validated using a hollow-fiber infection model (HFIM). Results: Treatment with monotherapy or combination therapy resulted in concentration-dependent killing for both isolates. Bacterial killing was greater with HUMC1 ΔPBP7/8 for all tested antibiotic concentrations. The mean bacterial population reduction was 4.38 log10 CFU/mL for HUMC1 and 5.38 log10 CFU/mL for HUMC1ΔPBP7/8 knockout isolate. The final mechanism-based model demonstrated improved antibacterial activity with PBP7/8 inhibition through a decline in KC50 values of 59.7% across the beta-lactams in the PBP7/8 knockout. HFIM observations that were retrospectively compared to the simulated model-predicted bacterial concentration time course showed our final model was able to appropriately capture changes in bacterial population within a dynamic HFIM scenario. Conclusions: The quantification of KC50 decline and increase in effectiveness of previously sidelined antimicrobial therapies with PBP7/8 inhibition suggests PBP7/8 is a promising potential target for an antibacterial adjuvant. This lends further support to advance to next-stage studies for identifying compounds that specifically inhibit PBP7/8 activity. Full article
(This article belongs to the Special Issue Next-Generation Antibiotic Strategies Against Drug-Resistant Bacteria)
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