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Virocrine transformation: the intersection between viral transforming proteins and cellular signal transduction
1Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06510, USA. daniel.dimaio@yale.edu
Abstract:
This review describes a mechanism of viral transformation involving activation of cellular signaling pathways. We focus on four viral oncoproteins: the E5 protein of bovine papillomavirus, which activates the platelet-derived growth factor beta receptor; gp55 of spleen focus forming virus, which activates the erythropoietin receptor; polyoma virus middle T antigen, which resembles an activated receptor tyrosine kinase; and LMP-1 of Epstein-Barr virus, which mimics an activated tumor necrosis factor receptor. These examples indicate that diverse viruses induce cell transformation by activating cellular signal transduction pathways. Study of this mechanism of viral transformation will provide new insights into viral tumorigenesis and cellular signal transduction.
Insights
Viruses transform cells by activating cellular signaling pathways. Four viral oncoproteins hijack key cell receptors, driving tumor formation and offering insights into cancer development.
Area of Science:
- Oncology
- Virology
- Molecular Biology
Background:
- Viral transformation is a key mechanism in virus-induced cancers.
- Understanding how viruses manipulate cellular pathways is crucial for cancer research.
Purpose of the Study:
- To review the mechanisms of viral transformation.
- To highlight how viral oncoproteins activate cellular signaling pathways.
Main Methods:
- Review of scientific literature on viral oncoproteins and cellular signaling.
- Analysis of four specific viral oncoproteins: BPV E5, SFFV gp55, PyMT, and EBV LMP-1.
Main Results:
- BPV E5 activates the platelet-derived growth factor beta receptor.
- SFFV gp55 activates the erythropoietin receptor.
- Polyoma virus middle T antigen mimics activated receptor tyrosine kinases.
- EBV LMP-1 mimics activated tumor necrosis factor receptors.
Conclusions:
- Diverse viruses induce cell transformation by activating cellular signal transduction pathways.
- Studying these mechanisms provides insights into viral tumorigenesis.
- This research advances understanding of cellular signal transduction.