Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Overview of Exosomes01:36

Overview of Exosomes

3.4K
Exosomes are stable, lipid bilayer-enclosed vesicles capable of crossing biological barriers. They can carry a wide range of molecules required for intercellular communication. Once exosomes are released from the cell where they originated, they enter a recipient cell through various pathways such as fusion, receptor-mediated endocytosis, macropinocytosis, and phagocytosis.
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
3.4K
Antimicrobial Proteins01:23

Antimicrobial Proteins

12.8K
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...
12.8K
Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

2.5K
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...
2.5K
Surface Membrane Barriers01:18

Surface Membrane Barriers

2.5K
The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
2.5K
Bacterial Signaling01:30

Bacterial Signaling

39.8K
Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
39.8K
Transduction01:16

Transduction

965
Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome...
965

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

SIRT2 mediates integrated stress response by deacetylating and stabilizing 4E-BP1 to suppress translation.

EMBO reports·2026
Same author

Structure and enzymology of glutaminase S482C and H461L variants associated with excess brain glutamate and neurological disease.

The Journal of biological chemistry·2026
Same author

A highly dynamic active state for transducin-bound phosphodiesterase-6 in vertebrate phototransduction.

bioRxiv : the preprint server for biology·2026
Same author

Large adipocytes increase vesicle-mediated lipid release and promote breast cancer malignancy.

Cell reports·2026
Same author

Embryonic stem cell-derived extracellular vesicles delay cellular senescence by inhibiting oxidative stress.

The Journal of biological chemistry·2025
Same author

Structure and enzymology of glutaminase mutants that disrupt glutamine-glutamate homeostasis and cause neurological disease.

bioRxiv : the preprint server for biology·2025

Related Experiment Video

Updated: Dec 23, 2025

Purification and microRNA Profiling of Exosomes Derived from Blood and Culture Media
10:45

Purification and microRNA Profiling of Exosomes Derived from Blood and Culture Media

Published on: June 14, 2013

32.3K

Exosomes as Sentinels against Bacterial Pathogens.

Elena Panizza1, Richard A Cerione2, Marc A Antonyak1

  • 1Department of Molecular Medicine, Cornell University, Ithaca, NY 14853, USA.

Developmental Cell
|April 22, 2020
PubMed
Summary
This summary is machine-generated.

Cells release extracellular vesicles (EVs) that act as decoys, neutralizing harmful bacterial toxins. This discovery reveals a novel protective mechanism cells use against bacterial threats.

More Related Videos

Using Nanoplasmon-Enhanced Scattering and Low-Magnification Microscope Imaging to Quantify Tumor-Derived Exosomes
09:30

Using Nanoplasmon-Enhanced Scattering and Low-Magnification Microscope Imaging to Quantify Tumor-Derived Exosomes

Published on: May 24, 2019

7.7K
Isolation and Characterization of Exosomes from Skeletal Muscle Fibroblasts
06:27

Isolation and Characterization of Exosomes from Skeletal Muscle Fibroblasts

Published on: May 16, 2020

3.8K

Related Experiment Videos

Last Updated: Dec 23, 2025

Purification and microRNA Profiling of Exosomes Derived from Blood and Culture Media
10:45

Purification and microRNA Profiling of Exosomes Derived from Blood and Culture Media

Published on: June 14, 2013

32.3K
Using Nanoplasmon-Enhanced Scattering and Low-Magnification Microscope Imaging to Quantify Tumor-Derived Exosomes
09:30

Using Nanoplasmon-Enhanced Scattering and Low-Magnification Microscope Imaging to Quantify Tumor-Derived Exosomes

Published on: May 24, 2019

7.7K
Isolation and Characterization of Exosomes from Skeletal Muscle Fibroblasts
06:27

Isolation and Characterization of Exosomes from Skeletal Muscle Fibroblasts

Published on: May 16, 2020

3.8K

Area of Science:

  • Cell Biology
  • Microbiology
  • Immunology

Background:

  • Extracellular vesicles (EVs) are recognized for intercellular communication.
  • The diverse roles of EVs in cellular defense are under investigation.

Purpose of the Study:

  • To investigate the role of extracellular vesicles (EVs) in cellular defense against bacterial toxins.
  • To explore novel functions of EVs beyond intercellular signaling.

Main Methods:

  • Utilized cell culture models to study EV production and release.
  • Exposed cells and EVs to bacterial toxins to assess protective effects.
  • Analyzed the interaction between EVs and bacterial toxins.

Main Results:

  • Demonstrated that cells release EVs capable of mitigating bacterial toxins.
  • Showcased EVs functioning as decoys to neutralize toxin activity.
  • Identified a new mechanism of cellular defense mediated by EVs.

Conclusions:

  • Extracellular vesicles (EVs) play a crucial role in protecting cells from bacterial toxins.
  • EVs serve as decoys, offering a novel strategy for combating bacterial infections.
  • This finding expands our understanding of EV functions in host defense.