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Isolation and mapping of 88 new RFLP markers on human chromosome 8
1Division of Biochemistry, Cancer Institute, Tokyo, Japan.
Genomics
|August 1, 1992
Summary
Researchers developed 88 new restriction fragment length polymorphism (RFLP) markers for human chromosome 8. This extensive isolation and physical mapping aids in creating high-resolution maps for disease gene discovery.
Area of Science:
- Human Genetics
- Molecular Biology
- Genomics
Background:
- High-resolution genetic mapping is crucial for identifying disease-associated genes.
- Human chromosome 8 harbors genes implicated in various inherited diseases and cancer.
Purpose of the Study:
- To isolate and characterize novel restriction fragment length polymorphism (RFLP) markers for human chromosome 8.
- To construct a high-resolution physical map of human chromosome 8.
Main Methods:
- Construction of a cosmid library from a human-mouse somatic hybrid cell line.
- Isolation and characterization of RFLP markers.
- Physical sublocalization of markers using fluorescent in situ hybridization (FISH).
Main Results:
- Eighty-eight new RFLP markers were successfully isolated and characterized.
- Seventy-one markers were physically mapped to specific chromosomal bands on chromosome 8 using FISH.
- Thirty-six markers localized to the short arm, 34 to the long arm, and 1 to the centromeric region.
- Five markers were identified as variable number tandem repeat (VNTR) loci.
Conclusions:
- This study provides the first extensive set of RFLP markers physically mapped to human chromosome 8.
- These markers are valuable resources for linkage mapping of inherited disease loci.
- The markers will facilitate the identification of potential tumor suppressor genes on chromosome 8.