In this episode, we welcome Dr. Lanna, who sheds light on a novel mechanism of T-cell rejuvenation that could significantly impact our understanding of immune protection. Traditionally, it's thought that T lymphocytes activate telomerase to avoid senescence. However, Dr. Lanna introduces us to a distinct process independent of telomerase action, where certain T cells, primarily naive and central memory cells, elongate their telomeres by receiving telomere vesicles from antigen-presenting cells (APCs). She explains the fascinating process of how APCs degrade shelterin to donate telomeres, which are then cleaved by the telomere trimming factor TZAP and transferred to T cells via extracellular vesicles. We delve into how these telomere vesicles, retaining the Rad51 recombination factor, enable telomere fusion, effectively lengthening T-cell chromoso ...