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Updated: May 6, 2026

The Cell-based L-Glutathione Protection Assays to Study Endocytosis and Recycling of Plasma Membrane Proteins
Published on: December 13, 2013
Who's really in control: microbial regulation of protein trafficking in the epithelium
Matthew R Hendricks1, Jennifer M Bomberger
1Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.
Abstract:
Due to evolutionary pressure, there are many complex interactions at the interface between pathogens and eukaryotic host cells wherein host cells attempt to clear invading microorganisms and pathogens counter these mechanisms to colonize and invade host tissues. One striking observation from studies focused on this interface is that pathogens have multiple mechanisms to modulate and disrupt normal cellular physiology to establish replication niches and avoid clearance. The precision by which pathogens exert their effects on host cells makes them excellent tools to answer questions about cell physiology of eukaryotic cells. Furthermore, an understanding of these mechanisms at the host-pathogen interface will benefit our understanding of how pathogens cause disease. In this review, we describe a few examples of how pathogens disrupt normal cellular physiology and protein trafficking at epithelial cell barriers to underscore how pathogens modulate cellular processes to cause disease and how this knowledge has been utilized to learn about cellular physiology.
Insights
Pathogens disrupt host cell functions to cause disease. Studying these interactions reveals insights into cellular physiology and host-pathogen dynamics.
Area of Science:
- Microbiology and Cell Biology
- Host-Pathogen Interactions
Background:
- Complex evolutionary pressures drive interactions between pathogens and eukaryotic host cells.
- Pathogens have evolved sophisticated mechanisms to evade host defenses, colonize tissues, and establish replication niches.
- Understanding these host-pathogen interactions is crucial for deciphering disease mechanisms.
Purpose of the Study:
- To review how pathogens disrupt host cellular physiology and protein trafficking.
- To highlight how pathogen-modulated cellular processes inform our understanding of eukaryotic cell biology.
- To underscore the utility of pathogens as tools for studying cell physiology.
Main Methods:
- Review of existing literature on host-pathogen interactions.
- Analysis of specific examples of pathogen-induced disruption of cellular processes.
- Focus on mechanisms affecting epithelial cell barriers and protein trafficking.
Main Results:
- Pathogens employ diverse strategies to modulate host cell functions, including disruption of normal physiology.
- Specific examples illustrate how pathogens interfere with protein trafficking at epithelial barriers.
- Pathogen-mediated manipulation of cellular processes provides insights into fundamental cell biology.
Conclusions:
- Pathogens are valuable tools for dissecting eukaryotic cellular physiology.
- Understanding pathogen strategies enhances knowledge of disease pathogenesis.
- Investigating host-pathogen interfaces offers a dual benefit to microbiology and cell biology.
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