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Automated fluorescent detection of microsatellite instability
1Balmain Laboratory, Room S271, UCSF Cancer Research Institute, 2340 Sutter Street, San Francisco, CA 94115, USA. ghirst@cc.ucsf.edu
Molecular Biotechnology
|July 4, 2001
Summary
Microsatellite instability analysis aids cancer diagnosis. This protocol uses fluorescent detection for sensitive, high-resolution analysis of tumor DNA and circulating tumor DNA.
Area of Science:
- Genetics
- Molecular Biology
- Oncology
Background:
- Microsatellites are polymorphic DNA repeats crucial for genetic analysis.
- Microsatellite instability (MSI) is linked to DNA mismatch repair deficiencies and various cancers.
- MSI analysis is a valuable tool for cancer diagnosis.
Purpose of the Study:
- To present an established protocol for detecting microsatellite instability.
- To highlight the advantages of fluorescent detection using automated DNA sequencing.
Main Methods:
- Utilizing automated DNA sequencing for fluorescent detection of microsatellite instability.
- Analyzing DNA samples from human tumors and circulating tumor DNA in serum/plasma.
Main Results:
- The protocol enables simultaneous analysis of multiple markers across numerous samples.
- Achieved high resolution, sensitivity, and clear data interpretation.
- Successfully detected microsatellite instability in clinical samples.
Conclusions:
- Fluorescent detection of MSI offers significant advantages over traditional methods.
- The presented protocol is effective for detecting MSI in tumor and serum/plasma DNA.
- This method supports the clinical utility of MSI analysis in cancer diagnosis.