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Viral-encoded cyclins
1Molecular Oncology Laboratory, Imperial Cancer Research Fund, London, WC2A 3PX, UK.
Current Opinion in Genetics & Development
|February 19, 2000
Abstract:
D-type cyclin homologs have been found in the genomes of herpesviruses associated with neoplasias. They appear to exploit features of G(1) cyclins but extend their properties to allow for deregulation of the cell cycle. Advances in the study of the molecular basis for these novel features as well as the potential role of viral cyclins in tumorigenesis are addressed.
Insights
Viral D-type cyclins, found in cancer-associated herpesviruses, mimic G(1) cyclins but deregulate the cell cycle. Their novel features and role in tumorigenesis are key areas of ongoing research.
Area of Science:
- Molecular biology
- Virology
- Oncology
Background:
- Herpesviruses linked to cancer contain D-type cyclin homologs.
- These viral proteins share similarities with host G(1) cyclins.
- Viral cyclins possess unique properties enabling cell cycle deregulation.
Purpose of the Study:
- To review advances in understanding viral cyclin molecular mechanisms.
- To explore the role of viral cyclins in cancer development (tumorigenesis).
Main Methods:
- Literature review of molecular studies on viral cyclins.
- Analysis of genomic data for herpesvirus-associated cyclins.
Main Results:
- Viral D-type cyclins exploit host G(1) cyclin functions.
- These viral proteins extend their capabilities beyond normal cell cycle regulation.
- Evidence suggests a role for viral cyclins in promoting tumor formation.
Conclusions:
- Viral cyclins represent a novel mechanism for cell cycle manipulation by herpesviruses.
- Understanding these viral proteins is crucial for cancer research and potential therapeutic strategies.