Related Experiment Videos
Molecular genetic markers spanning mouse chromosome 10
1Laboratory of Molecular Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892.
Genomics
|November 1, 1990
Summary
Researchers mapped mouse chromosome 10 using genetic markers, including oncogenesis and immune response genes. This map reveals new gene locations and relationships, such as the close linkage of the interferon-gamma receptor and Myb oncogene.
Area of Science:
- Genetics
- Genomics
- Molecular Biology
Background:
- Mouse chromosome 10 is a region with limited molecular markers.
- Understanding gene order is crucial for studying genetic diseases and biological functions.
Purpose of the Study:
- To construct a high-resolution genetic linkage map for mouse chromosome 10.
- To position previously unmapped genetic markers on this chromosome.
Main Methods:
- Southern blot analysis was used to genotype somatic cell hybrids, recombinant inbred strains, and backcross progeny.
- Genetic linkage analysis was performed to determine marker order and distances.
Main Results:
- A linkage map of mouse chromosome 10 was generated, encompassing seven genetic markers.
- Four new genetic markers, including oncogenesis (Gli, Myb, Tra-1) and immune response genes (Ifg, Ifgr, Pfp), were positioned.
- The genes for murine interferon-gamma (Ifg) and its receptor (Ifgr) were found at opposite ends of the chromosome.
- The interferon-gamma receptor (Ifgr) and the Myb oncogene were identified as closely linked.
Conclusions:
- The established gene order provides a valuable resource for mouse genomics.
- The close linkage of Ifgr and Myb may explain their co-enhancement in certain cancers.
- This map expands the molecular marker density in a previously under-characterized genomic region.