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Iacocca Fellowship","award":["N\/A"],"award-info":[{"award-number":["N\/A"]}]},{"name":"SenNet Initiative, KAPPSen TMC","award":["U54AG075941"],"award-info":[{"award-number":["U54AG075941"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,7,22]]},"abstract":"<jats:p>\n                    Cellular senescence is an irreversible stress response, which leads to loss of cellular function and remodeling of the cellular secretory profile. In humans, pancreatic \u03b2 cells undergo cellular senescence during the progression to type 2 diabetes (T2D). However, the mechanism linking \u03b2 cell senescence to islet dysfunction remains unknown, and thus the therapeutic potential of targeting senescent cells in T2D is not established. Herein, we identified a subpopulation of senescent \u03b2 cells expressing p21, which emerged early in the progression of T2D in humans and mice. Spatial transcriptomics and proteomics analyses confirmed senescence and loss of cellular identity in this subpopulation in humans. Functional analysis revealed lack of glucose responsiveness, high basal insulin secretion, and transcription of senescence-associated secretory phenotype (SASP) factors. SASP factors from p21\n                    <jats:sup>+<\/jats:sup>\n                    \u03b2 cells induced secondary senescence in neighboring cells, characterized by dysfunction and loss of identity. JAK inhibitors counteracted the induction of secondary senescence and restored \u03b2 cell function in islets from humans with T2D and in mice fed a high-fat diet. These findings reveal the critical role of p21\n                    <jats:sup>+<\/jats:sup>\n                    \u03b2 cells in T2D pathogenesis and the therapeutic potential of targeting this pathophysiological process.\n                  <\/jats:p>","DOI":"10.1172\/jci.insight.197310","type":"journal-article","created":{"date-parts":[[2026,6,9]],"date-time":"2026-06-09T16:01:23Z","timestamp":1781020883000},"source":"Crossref","is-referenced-by-count":4,"title":["p21-senescent cells drive pancreatic islet dysfunction through targetable paracrine signaling in type 2 diabetes"],"prefix":"10.1172","volume":"11","author":[{"given":"Kanako","family":"Iwasaki","sequence":"first","affiliation":[{"name":"Joslin Diabetes Center\/Harvard Medical School, Boston, Massachusetts, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Priscila","family":"Carapeto","sequence":"additional","affiliation":[{"name":"Joslin Diabetes Center\/Harvard Medical School, Boston, Massachusetts, 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