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Updated: Aug 16, 2026

Production and Testing of Antimicrobial Peptides and Their Mimics
Published on: April 10, 2026
Recent developments in glycopeptide antibacterials
1Merck Research Laboratories, Rahway, NJ 07065, USA. john_barrett2@merck.com
Abstract:
The glycopeptide class of antibiotics, namely vancomycin and teicoplanin, are intravenously administered in the hospital setting for the treatment of the most severe of Gram-positive infections. Although a mainstay of the hospital formulary for over four decades, the rise of increasingly frequent high-level vancomycin resistance in enterococci and low-level resistance in staphylococci (as well as a few high-level vancomycin resistance cases) has highlighted the need for the identification of naturally occurring and semi-synthetically modified glycopeptide derivatives that have antibacterial activity against these resistant strains. Among the leading development candidates are dalbavancin, oritavancin, telavancin and ramoplanin, each of which provides a unique microbiological and pharmacological profile to fill an important unmet medical need.
Insights
New glycopeptide antibiotics like dalbavancin are crucial for treating severe Gram-positive infections, especially those resistant to vancomycin. These agents offer unique profiles to combat rising antibiotic resistance.
Area of Science:
- Microbiology
- Pharmacology
- Infectious Diseases
Background:
- Glycopeptide antibiotics (vancomycin, teicoplanin) are mainstays for severe Gram-positive infections.
- Increasing vancomycin resistance in enterococci and staphylococci necessitates new therapeutic options.
Purpose of the Study:
- To identify and evaluate novel glycopeptide derivatives with activity against resistant Gram-positive strains.
- To address the unmet medical need for effective treatments against vancomycin-resistant bacteria.
Main Methods:
- Review of existing literature on glycopeptide antibiotics.
- Analysis of microbiological and pharmacological profiles of emerging glycopeptide candidates.
Main Results:
- Dalbavancin, oritavancin, telavancin, and ramoplanin are identified as leading development candidates.
- These agents demonstrate unique characteristics to combat resistant Gram-positive infections.
Conclusions:
- Novel glycopeptides are essential to overcome vancomycin resistance.
- Emerging agents offer promising therapeutic strategies for challenging infections.
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