Related Experiment Videos
Retroviral insertional mutagenesis: tagging cancer pathways
1Division of Molecular Genetics and Centre of Biomedical Genetics, Netherlands Cancer Institute 1066 CX, Amsterdam, The Netherlands.
Advances in Cancer Research
|April 1, 2003
Summary
Moloney murine leukemia virus (M-MuLV) causes tumors by inserting its DNA into the host genome, activating oncogenes and disabling tumor suppressors. Proviral tagging efficiently identifies cooperating cancer signaling pathways.
Area of Science:
- Oncology
- Virology
- Genetics
Background:
- Slow transforming retroviruses, like Moloney murine leukemia virus (M-MuLV), induce tumors after a significant latency period.
- Tumorigenesis is driven by proviral insertions that activate proto-oncogenes or inactivate tumor suppressor genes.
- Proviral insertions in tumor cells represent cooperating oncogenic events in multistep cancer development.
Purpose of the Study:
- To leverage proviral tagging as an efficient method for identifying cooperating signaling pathways in cancer.
- To utilize advances in genomics and genetic engineering for enhanced discovery in cancer research.
Main Methods:
- Proviral tagging using Moloney murine leukemia virus (M-MuLV).
- High-throughput isolation of proviral flanking sequences.
- Utilizing genetically modified animals and the complete mouse genome sequence.
Main Results:
- Proviral insertions mark genes contributing to tumorigenesis.
- Identification of numerous proto-oncogenes in retrovirally induced tumors.
- Demonstration of cooperating oncogenic events in tumor development.
Conclusions:
- Proviral tagging is a powerful approach to identify cooperating signaling pathways in cancer.
- Advances in genomic technologies have revolutionized the efficiency of proviral tagging.
- Understanding cooperating oncogenic events is crucial for deciphering complex cancer biology.