A new mRNA treatment rejuvenates key immune cells in the body, which could help them fight off infections and cancer, a mouse study suggests.
T cells help train other immune cells to fight off disease. But as the body ages, the activity of these T cells declines, and they become less responsive to threats. Additionally, the thymus gland — where T cells mature — begins to shrink with age. These impacts of aging may explain why vaccines and immune-boosting cancer therapies don't work as well in older adults as they do in younger adults, Nature News reported.
