Extracellular vesicles: An emerging platform in gram-positive bacteria

Area of Science:

• Microbiology
• Cell Biology
• Bacterial Pathogenesis

Background:

• Extracellular vesicles (EVs) are secreted by various organisms, including bacteria, mediating intercellular communication.
• While EV secretion in gram-negative bacteria is well-documented, it is less understood in gram-positive bacteria.
• EVs are implicated in stress response, competition, gene transfer, and pathogenicity.

Purpose of the Study:

• To review the current understanding of extracellular vesicles produced by gram-positive bacteria.
• To discuss the functional aspects of gram-positive bacterial EVs.
• To compare gram-positive EVs with those from gram-negative bacteria.

Main Methods:

• Literature review of existing studies on gram-positive bacterial EVs.
• Analysis of the cargo and functions of gram-positive EVs.
• Comparative analysis with gram-negative bacterial EVs.

Main Results:

• Gram-positive bacteria secrete nano-sized EVs, contrary to previous notions.
• These EVs carry diverse biomolecules involved in bacterial competition, survival, and host interactions.
• EVs play roles in invasion, immune evasion, and infection processes.

Conclusions:

• Extracellular vesicles from gram-positive bacteria are significant mediators of bacterial interactions and pathogenicity.
• Further research is needed to fully elucidate the mechanisms and roles of gram-positive EVs in health and disease.
• Understanding gram-positive EVs offers insights into bacterial competition and infection strategies.