K-Ras 4A and Tumor Development in Mice
Author Information
Author(s): Patek Charles E, Arends Mark J, Rose Lorraine, Luo Feijun, Walker Marion, Devenney Paul S, Berry Rachel L, Lawrence Nicola J, Ridgway Rachel A, Sansom Owen J, Hooper Martin L
Primary Institution: Sir Alastair Currie Cancer Research UK Laboratories, The University of Edinburgh
Hypothesis
Can the K-Ras 4A proto-oncoprotein suppress tumor development in the absence of its oncogenic allele?
Conclusion
The K-Ras 4A proto-oncoprotein does not exhibit tumor suppressor activity in the small intestine.
Supporting Evidence
- K-Ras 4A deficiency did not affect mouse survival.
- No K-ras activating mutations were detected in 27 intestinal tumors.
- Tumor number and size were similar between different mouse genotypes.
Takeaway
This study looked at whether a protein called K-Ras 4A can stop tumors from growing in mice. It found that K-Ras 4A doesn't help prevent tumors, even though it usually helps cells die when they are damaged.
Methodology
The study used real-time RT-qPCR to measure K-ras splice variant levels and compared tumor development in different mouse genotypes.
Limitations
The study only examined tumorigenesis in a specific mouse model and may not be generalizable to other contexts.
Participant Demographics
Inbred C57BL/6 mice were used in the study.
Statistical Information
P-Value
0.0015
Statistical Significance
p=0.0015
Digital Object Identifier (DOI)
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