Related Experiment Video
Updated: May 7, 2026

07:50
Assay Development for High-Throughput Drug Screening Against Mycobacteria
Published on: October 25, 2024
Anti-infective drug development for MRSA.
1Cubist Pharmaceuticals, Lexington, MA, USA.
Methods in Molecular Biology (Clifton, N.J.)
|October 3, 2013
Summary
Treating Staphylococcus aureus infections, especially multidrug-resistant strains like MRSA, is challenging due to limited antibiotics. This review covers current and developing treatments for MRSA and alternative therapies.
Area of Science:
- Microbiology
- Infectious Diseases
- Pharmacology
Background:
- Staphylococcus aureus is a significant pathogen causing severe hospital and community infections.
- The rise of multidrug-resistant strains, particularly methicillin-resistant Staphylococcus aureus (MRSA), complicates treatment options.
- A narrow range of antibiotics is effective against MRSA infections.
Purpose of the Study:
- To review existing antimicrobial agents for MRSA infections.
- To discuss novel antimicrobial agents in development for MRSA.
- To explore alternative therapeutic strategies for staphylococcal infections.
Main Methods:
- Literature review of current and developmental antimicrobial agents.
- Analysis of alternative treatment approaches for staphylococcal infections.
Main Results:
- Limited effective antibiotics are currently available for MRSA.
- Several new antimicrobial agents are in various stages of clinical development.
- Alternative strategies, such as phage therapy and immunotherapy, are under investigation.
Conclusions:
- Effective treatment of MRSA infections requires a combination of existing and novel antimicrobial agents.
- Continued research into alternative therapies is crucial to combat evolving resistance patterns.
- A comprehensive approach is needed to manage staphylococcal infections effectively.
Related Concept Videos
Clinical Significance of Antibiotic Resistance
Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
Mechanism of Antibiotic Resistance in MRSA
Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...
Antimicrobial Effectiveness
The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
Development of Antibiotic Resistance
Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
Combined Effects of Drugs: Synergism
Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
Such synergistic combinations...
Gene Regulation in Microbial Communities: Quorum Sensing
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
