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Updated: Apr 20, 2026

Scalable Isolation and Purification of Extracellular Vesicles from Escherichia coli and Other Bacteria
Published on: October 13, 2021
Challenges posed by extracellular vesicles from eukaryotic microbes
Julie M Wolf1, Arturo Casadevall
1Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, United States
Abstract:
Extracellular vesicles (EV) produced by eukaryotic microbes play an important role during infection. EV release is thought to benefit microbial invasion by delivering a high concentration of virulence factors to distal host cells or to the cytoplasm of a host cell. EV can significantly impact the outcome of host–pathogen interaction in a cargo-dependent manner. Release of EV from eukaryotic microbes poses unique challenges when compared to their bacterial or archaeal counterparts. Firstly, the membrane-bound organelles within eukaryotes facilitate multiple mechanisms of vesicle generation. Secondly, the fungal cell wall poses a unique barrier between the vesicle release site at the plasma membrane and its destined extracellular environment. This review focuses on these eukaryotic-specific aspects of vesicle synthesis and release.
Insights
Eukaryotic microbes release extracellular vesicles (EVs) to deliver virulence factors during infection. This review explores unique eukaryotic mechanisms of EV generation and release, focusing on fungal cell walls and internal organelles.
Area of Science:
- Microbiology
- Cell Biology
- Infectious Diseases
Background:
- Extracellular vesicles (EVs) are crucial mediators in host-pathogen interactions.
- EVs from eukaryotic microbes deliver virulence factors, influencing infection outcomes.
- EV release by microbes presents unique biological challenges.
Purpose of the Study:
- To review the eukaryotic-specific mechanisms of vesicle synthesis and release.
- To highlight challenges posed by eukaryotic cell structures, like the fungal cell wall, during EV release.
Main Methods:
- This review synthesizes existing literature on microbial EV production.
- Focuses on comparative analysis between eukaryotic and prokaryotic EV release.
Main Results:
- Eukaryotic EVs utilize diverse vesicle generation pathways.
- The fungal cell wall acts as a significant barrier to EV secretion.
- EV cargo composition dictates their impact on host cells.
Conclusions:
- Understanding eukaryotic EV biology is key to combating microbial infections.
- Targeting EV release mechanisms could offer novel therapeutic strategies.
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