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[Bacterial cyclostatin, or how do bacteria manipulate the eukaryotic cell cycle].
Jean De Rycke1, Bernard Ducommun
1Laboratoire Inra de Pathologie Infectieuse et Immunologie, BP 1 37380 Nouzilly, France. derycke@tours.inra.fr
Medecine Sciences : M/S
|December 4, 2003
Summary
Bacterial proteins can inhibit eukaryotic cell proliferation without immediate toxicity, suggesting novel control mechanisms. These proteins, termed cyclostatins, activate cell cycle checkpoints, impacting host-pathogen interactions.
Area of Science:
- Cellular microbiology
- Bacterial pathogenesis
- Eukaryotic cell cycle regulation
Context:
- Emerging evidence suggests bacterial proteins can modulate eukaryotic cell proliferation.
- These proteins exhibit antiproliferative effects without overt cytotoxicity.
- Understanding these interactions is crucial for cellular microbiology and host adaptation studies.
Purpose:
- To critically analyze bacterial mechanisms controlling the eukaryotic cell cycle.
- To examine cytolethal distending toxins (CDTs) as a model for these bacterial proteins.
- To propose a new classification for these antiproliferative bacterial proteins.
Summary:
- Bacterial proteins, exemplified by cytolethal distending toxins (CDTs), inhibit eukaryotic cell proliferation.
- CDTs activate a G2 cell cycle checkpoint, likely initiated by DNA alteration.
- The precise molecular mechanism and in vivo relevance of these effects require further investigation.
Impact:
- Introduces the concept of 'cyclostatins' for bacterial proteins that control cell proliferation.
- Highlights the potential role of cell cycle manipulation in bacterial pathogenicity and host adaptation.
- Suggests new avenues for research in cellular microbiology and toxinology.