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Linkage map of human chromosome 9 microsatellite polymorphisms
P J Wilkie1, D B Krizman, J L Weber
1Marshfield Medical Research Foundation, Wisconsin 54449.
Genomics
|March 1, 1992
Summary
Ten microsatellite markers were mapped to chromosome 9, providing valuable genetic linkage data. This research advances the understanding of human chromosome 9 genetic mapping and marker order.
Area of Science:
- Human Genetics
- Molecular Biology
- Genomics
Background:
- Microsatellite markers are crucial for genetic mapping due to their high polymorphism.
- Chromosome 9 harbors genes associated with various human traits and diseases.
- Accurate mapping of microsatellite markers refines the human genome map.
Purpose of the Study:
- To map ten polymorphic microsatellite markers to human chromosome 9.
- To determine the relative order and genetic distances of these markers.
- To integrate new markers with existing public genetic databases.
Main Methods:
- Utilized ten microsatellite markers with (CA)n or (AAAT)n repeats.
- Employed somatic cell hybrids for regional localization of specific markers (D9S54, D9S103).
- Applied two-point lod score analysis and meiotic recombination events for marker ordering.
- Integrated data with the CEPH database (v.3) and D9S15 locus marker.
Main Results:
- Successfully mapped ten microsatellite markers to chromosome 9.
- Determined a potential order of markers: D9S54-D9S104-[D9S52-D9S43-D9S50]-D9S53-[D9S106-D9S105]-D9S51-D9S103.
- Reported polymorphic information content (PIC) values ranging from 0.46 to 0.82.
- Localized D9S54 to 9pter-p22 and D9S103 to 9q34-qter.
Conclusions:
- Established a framework for the genetic map of chromosome 9 using microsatellite markers.
- The generated map provides a foundation for further genetic studies on chromosome 9.
- Enhanced the resolution of the human genetic map, aiding in gene discovery and disease association studies.