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[Listeria monocytogenes--the perfect parasite?]
V B Wyller1, E A Antal, P Bracht
1Patologisk-anatomisk avdeling, Ullevål sykehus, Oslo.
Summary
Listeria monocytogenes bacteria invade host cells, hijack cellular machinery for movement, and spread between cells. This pathogen
Area of Science:
- Molecular biology
- Cell biology
- Microbiology
Context:
- Listeria monocytogenes possesses a unique intracellular life cycle.
- The pathogen exploits host cellular mechanisms for invasion and replication.
Purpose:
- To review the molecular mechanisms of Listeria monocytogenes infection.
- To explore how studying Listeria has advanced understanding of cellular processes.
- To propose a mechanism for neuroinvasion.
Summary:
- Listeria monocytogenes induces its own phagocytosis and escapes the phagosome.
- Intracellular bacteria utilize host actin to form "comet tails" for motility.
- Motile bacteria spread to adjacent cells via pseudopodium formation and double-membrane vacuole escape.
- The review proposes actin-dependent axonal transport as the cause of neuroinvasion.
Impact:
- Provides insights into the molecular biology of Listeria infection.
- Highlights the contribution of Listeria research to understanding fundamental cell biology.
- Suggests a novel mechanism for bacterial neuroinvasion via axonal transport.