Manipulation of Host Cell Organelles by Intracellular Pathogens

Area of Science:

• Microbiology
• Cell Biology
• Pathogenesis

Background:

• Intracellular pathogens employ sophisticated strategies to hijack host cell machinery.
• Manipulation of host cell organelle compartments is crucial for pathogen persistence and proliferation.
• Understanding these interactions is key to developing novel therapeutic interventions.

Purpose of the Study:

• To review the mechanisms by which intracellular bacteria, parasites, and viruses manipulate host cell organelle compartments.
• To highlight common strategies used by diverse pathogens to establish intracellular niches.
• To compare the specific features of intracellular lifestyles and replication cycles.

Main Methods:

• Literature review focusing on microbial manipulation of host cell organelles.
• Analysis of virulence mechanisms employed by specific intracellular pathogens including bacteria (Salmonella, Legionella, Rickettsia, Chlamydia, Mycobacterium), parasites (Plasmodium, Toxoplasma), and viruses (Influenza, Polio, SARS, Dengue, Zika).
• Comparative analysis of pathogen-organelle interactions and replication strategies.

Main Results:

• Pathogens extensively target and remodel endosomes, endoplasmic reticulum, Golgi apparatus, mitochondria, and lipid droplets.
• Specific examples illustrate how Salmonella, Legionella, Rickettsia, Chlamydia, Mycobacterium, Plasmodium, and Toxoplasma exploit host organelles.
• Viral replication strategies involving organelle manipulation by various viruses are presented.

Conclusions:

• Intracellular pathogens exhibit remarkable convergence in hijacking host cell organelles for their life cycles.
• Shared mechanisms of organelle manipulation underscore fundamental principles of host-pathogen interactions.
• This review provides insights into pathogen adaptation and potential targets for antimicrobial strategies.