Chromosome mapping in cattle using mouse myeloma/calf lymph node cell hybridomas.

Area of Science:

• Genetics
• Biochemistry
• Cell Biology

Background:

• Gene mapping is crucial for understanding genetic organization and disease.
• Hybridoma technology provides a model for studying gene localization in different species.

Purpose of the Study:

• To assign the chromosomal locations of specific bovine isozyme loci using mouse myeloma/calf hybridomas.
• To identify syntenic groups of bovine genes.

Main Methods:

• Analysis of bovine isozyme presence in mouse myeloma/calf hybridomas.
• Correlation with specific banded chromosomes of the bovine complement.

Main Results:

• Tentative assignment of the bovine peptidase C (PEP C) isozyme locus to chromosome 5.
• Assignment of the bovine lactate dehydrogenase B/peptidase B (LDH B/PEP B) syntenic group to chromosome 19.
• Evidence suggesting association of LDH A with chromosomes 23-29 and superoxide dismutase 1 (SOD 1) with chromosome 13.

Conclusions:

• Established preliminary chromosomal assignments for several bovine isozymes.
• Demonstrated the utility of somatic cell hybridization for bovine gene mapping.