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Non-invasive transgenic mouse genotyping using stool analysis
1Department of Veterinary Medicine, VA Palo Alto Health Care System, 3801 Miranda Avenue, 154J, Palo Alto, CA 94304, USA.
FEBS Letters
|December 2, 1999
Summary
Non-invasive mouse genotyping using polymerase chain reaction (PCR) on stool samples is effective. This method avoids animal discomfort associated with traditional tail biopsies, offering a sensitive alternative for genetic research.
Area of Science:
- Animal Genetics
- Molecular Biology
- Biotechnology
Background:
- Traditional transgenic mouse genotyping relies on invasive tail or ear biopsies, causing animal distress.
- Developing non-invasive methods is crucial for improving animal welfare and research efficiency.
Purpose of the Study:
- To evaluate the efficacy of polymerase chain reaction (PCR)-based genotyping using mouse stool specimens.
- To compare the non-invasive stool method with conventional tail biopsy genotyping.
Main Methods:
- Genotyping was performed on stool samples from three transgenic mouse lines using PCR.
- Tail biopsies were used for comparison.
- Detection of human keratin polypeptide 18 transgene and endogenous mouse genes was assessed.
Main Results:
- Stool specimens were easily obtained and allowed for straightforward detection of the human transgene.
- The method successfully identified endogenous mouse actin and keratin genes.
- Nested PCR enhanced signal magnitude but was not essential for genotyping.
Conclusions:
- Non-invasive genotyping using mouse stool is a reproducible, sensitive, and effective alternative to invasive tissue sampling.
- This method can significantly improve the welfare of genetically altered mice during genotyping procedures.
