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Rous sarcoma virus genome stably integrated into mouse ascites sarcoma cells
1Department of Molecular Virology, Okayama University Medical School, Japan.
Summary
Mouse ascites sarcoma cells retain the intact Rous sarcoma virus (RSV) genome, even after long-term culture. These RSV-transformed cells are valuable for future research due to their rapid growth and ease of DNA recovery.
Area of Science:
- Virology
- Cancer Research
- Molecular Biology
Background:
- Rous sarcoma virus (RSV) is a retrovirus known to cause tumors in chickens.
- Understanding the persistence and organization of viral genomes within host cells is crucial for cancer research.
Purpose of the Study:
- To analyze the organization of the RSV genome within mouse ascites sarcoma cells.
- To assess the stability of the integrated RSV genome and its integration site over time.
- To evaluate the utility of these transformed mouse cells for further RSV studies.
Main Methods:
- Analysis of RSV gene organization in mouse ascites sarcoma cells.
- Long-term in vivo and in vitro cultivation of transformed cells.
- Recovery of infectious RSV via transfection of chick embryo cells using DNA from transformed mouse cells.
Main Results:
- The RSV genome remained intact in mouse ascites sarcoma cells during prolonged cultivation.
- The cellular integration site of the RSV genome was observed to be stable.
- Infectious RSV was successfully recovered from these cells, confirming the presence of a functional viral genome.
Conclusions:
- Mouse ascites sarcoma cells serve as a stable host for the intact RSV genome.
- The rapid proliferation and ease of manipulation of these cells make them a valuable model for studying RSV-induced transformation and viral replication.