Related Experiment Video
Updated: Jun 27, 2026

09:00
Testing the Role of Multicopy Plasmids in the Evolution of Antibiotic Resistance
Published on: May 2, 2018
Bacteria share proteins to survive antibiotics
Thierry Oms1, Laurence Van Melderen1
1Bacterial Genetics and Physiology, Faculté des Sciences, Université Libre de Bruxelles, Gosselies, Belgium.
Summary
Bacteria use membrane vesicles for cell-to-cell communication, significantly boosting their survival against antibiotics. This cooperation is key to developing antibiotic persistence.
Area of Science:
- Microbiology
- Bacterial Physiology
- Drug Resistance
Background:
- Antibiotic persistence is a major challenge in treating bacterial infections.
- Understanding mechanisms of bacterial survival is crucial for developing new therapies.
Purpose of the Study:
- To investigate the role of cell-to-cell communication in bacterial antibiotic persistence.
- To explore the function of membrane vesicles in mediating this cooperation.
Main Methods:
- Utilized advanced microscopy techniques to observe vesicle formation and transfer.
- Performed genetic manipulations to assess the impact of vesicle production on survival.
- Quantified antibiotic tolerance in wild-type and mutant bacterial strains.
Main Results:
- Demonstrated that bacteria release membrane vesicles containing specific molecules.
- Showed that recipient bacteria internalize these vesicles, altering their physiological state.
- Confirmed that vesicle-mediated communication significantly enhances bacterial antibiotic persistence.
Conclusions:
- Cell-to-cell cooperation via membrane vesicles is a novel mechanism contributing to antibiotic persistence.
- Targeting vesicle formation or uptake could be a potential strategy to overcome antibiotic resistance.
Related Concept Videos
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...
Antibiotic Selection
Overview
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...
Genomic DNA in Prokaryotes
The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
Genomic Diversity in Bacteria
Although bacterial genomes are much...
Genomic Diversity in Bacteria
Although bacterial genomes are much...
Antimicrobial Proteins
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Defense Against Bacterial Pathogens
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...

