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Mutations in mice that influence natural killer (NK) cell activity
Immunogenetics
|March 1, 1981
Summary
Six mouse mutations reduce natural killer (NK) cell activity, with motheaten (me) mice showing almost no NK cell function. Conversely, nude (nu) and lymphoproliferation (lpr) mutations increase NK cell activity.
Area of Science:
- Immunology
- Genetics
- Cell Biology
Background:
- Natural killer (NK) cells are crucial for innate immunity.
- Understanding genetic regulation of NK cell activity is vital for immune research.
Purpose of the Study:
- To identify mouse mutations affecting splenic NK cell activity.
- To characterize the impact of specific genetic loci on NK cell function.
Main Methods:
- Testing splenic NK cell activity against YAC-1 target cells in various mutant mice.
- Phenotypic analysis of NK cell activity in homozygous and compound heterozygous mutant mice.
Main Results:
- Six mutations (beige, hairless, motheaten, obese, steel, dominant spotting) reduced NK cell activity.
- Motheaten (me) mice exhibited profound NK cell deficiency.
- Nude (nu) and lymphoproliferation (lpr) mutations enhanced NK cell-mediated lysis.
- Double mutant nude-beige mice were viable and NK cell-deficient.
Conclusions:
- Specific mutations significantly impact NK cell function in mice.
- The motheaten mutation causes a severe defect in NK cell activity.
- Nude and lymphoproliferation mutations enhance NK cell activity, suggesting complex genetic regulation.