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Decrease in cholera toxin-binding T cells in aged mice and human volunteers
International Archives of Allergy and Applied Immunology
|January 1, 1981
Abstract:
The capacity of T cell-enriched populations of cells from mice and human volunteers to bind cholera toxin was analyzed by means of a fluorescence-activated cell sorter. In aged mice and humans, the number of cells capable of binding high concentrations of cholera toxin was lower than that in young mice and humans. The capacity to bind cholera toxin may be one of the useful indicators for the detection of aging in the immune system.
Insights
The immune system ages, with fewer T cells binding cholera toxin in older mice and humans. This toxin-binding capacity could indicate immune system aging.
Area of Science:
- Immunology
- Aging Research
- Cell Biology
Background:
- The immune system undergoes changes with age, impacting its function.
- Cholera toxin is a well-characterized bacterial toxin that interacts with specific cell surface receptors.
Purpose of the Study:
- To investigate the effect of aging on the T cell capacity to bind cholera toxin.
- To determine if cholera toxin binding can serve as a biomarker for immune system aging.
Main Methods:
- Utilized fluorescence-activated cell sorting (FACS) to analyze T cell populations.
- Quantified the binding of cholera toxin to T cells from young and aged mice and human volunteers.
Main Results:
- A reduced number of T cells capable of binding high concentrations of cholera toxin was observed in aged mice compared to young mice.
- Similarly, aged human volunteers exhibited a lower number of T cells with high cholera toxin binding capacity than younger individuals.
Conclusions:
- The capacity of T cells to bind cholera toxin decreases with age in both mice and humans.
- Cholera toxin binding may represent a potential indicator for assessing immune system aging.