Related Experiment Videos
Single-strand conformation polymorphism analysis to detect p53 mutations: characterization and development of
J A Welsh1, K Castrén, K H Vähäkangas
1Laboratory of Human Carcinogenesis, NCI, National Institutes of Health, Bethesda, MD 20892, USA. welshj@intra.nci.nih.gov
Clinical Chemistry
|January 24, 1998
Summary
Standardized temperature-controlled nonradioactive SSCP effectively detects p53 gene mutations. This optimized method achieves 98% efficiency for routine screening of cancer-associated mutations.
Area of Science:
- Molecular biology
- Genetics
- Cancer research
Background:
- Single-strand conformation polymorphism (SSCP) is a common method for prescreening p53 gene mutations.
- Standardization of SSCP for p53 mutation detection remains a challenge.
Purpose of the Study:
- To develop standardized, temperature-controlled, nonradioactive SSCP conditions for detecting p53 mutations.
- To optimize mutation detection in frequently mutated p53 exons 4-8.
Main Methods:
- Developed temperature-controlled nonradioactive SSCP for p53 exons 4-8.
- Created distinguishable positive controls using mutated primers.
- Emphasized purification of amplified products via gel electrophoresis.
Main Results:
- Achieved 98% efficiency in p53 mutation detection using optimized SSCP conditions.
- Utilized specific temperatures (exon 4: 4°C/15°C; other exons: 4°C/20°C).
- Demonstrated high efficiency with previously sequenced samples and positive controls.
Conclusions:
- The developed temperature-controlled SSCP method is highly efficient for p53 mutation screening.
- This standardized approach is suitable for routine mutation detection in human tumors.
- Optimized SSCP offers a reliable nonradioactive method for genetic analysis.