How c-myc and Ha-ras Affect Cell Death
Author Information
Author(s): M.J. Arends, A.H. McGregor, N.J. Toft, E.J.H. Brown, A.H. Wyllie
Primary Institution: Cancer Research Campaign Laboratories, Department of Pathology, University Medical School
Hypothesis
The study investigates how c-myc and mutated Ha-ras oncogenes influence susceptibility to apoptosis in rat fibroblasts.
Conclusion
C-myc promotes apoptosis while mutated Ha-ras suppresses it, and this is linked to the availability of endonuclease activity.
Supporting Evidence
- High apoptotic rates are associated with c-myc expression.
- Mutated Ha-ras expression is linked to reduced apoptosis.
- Apoptotic indices correlated inversely with p21ras expression.
- Endonuclease activity is higher in c-myc transfectants.
Takeaway
Some genes can make cells more likely to die, while others can help them live longer. This study looks at how two specific genes, c-myc and Ha-ras, affect this process.
Methodology
The study involved transfecting rat fibroblasts with c-myc and mutated Ha-ras oncogenes and measuring their rates of apoptosis and endonuclease activity.
Limitations
The study may not fully account for incidental cellular changes during transfection and selection.
Statistical Information
P-Value
p<0.004
Statistical Significance
p<0.004
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