{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T14:55:30Z","timestamp":1782226530629,"version":"3.54.5"},"reference-count":50,"publisher":"Wiley","issue":"29","license":[{"start":{"date-parts":[[2025,5,23]],"date-time":"2025-05-23T00:00:00Z","timestamp":1747958400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,5,23]],"date-time":"2025-05-23T00:00:00Z","timestamp":1747958400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["advanced.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Advanced Science"],"published-print":{"date-parts":[[2025,8]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Neural stem cell therapies hold great promise for improving stroke recovery, but the hostile stroke microenvironment can hinder the initial graft survival. It has long been well documented that the microenvironment evolves over time, making it crucial to identify the optimal transplantation window to maximize therapeutic efficacy. However, it remains uncertain whether acute or delayed local cell transplantations better supports graft viability after stroke. Here, it is shown that delayed intracerebral transplantation of neural progenitor cells (NPCs) derived from human induced pluripotent cells (iPSCs) at 7 days post stroke significantly enhances graft proliferation and survival, and promotes axonal sprouting, compared to acute transplantation at 1 day post stroke, in a mouse model of large cortical stroke. Using in vivo bioluminescence imaging over a 6\u2010week period post\u2010transplantation, a more than fivefold increase is observed in bioluminescence signal in mice that received delayed NPC therapy, compared to those that underwent acute NPC transplantation. The increased number of cell grafts in mice receiving delayed NPC transplantation is driven by increased proliferation rates early after transplantation, which subsequently declines to similarly low levels in both groups. Notably, it is found that the majority of transplanted NPCs differentiate into neurons after 6 weeks, with no significant differences in the neuron\u2010to\u2010glia ratio between acute and delayed transplantation groups. These findings suggest that delayed NPC transplantation improves early graft survival and proliferation, which could help identify the optimal therapeutic window for maximizing the effectiveness of NPC\u2010based therapies in stroke.<\/jats:p>","DOI":"10.1002\/advs.202504154","type":"journal-article","created":{"date-parts":[[2025,5,23]],"date-time":"2025-05-23T08:36:04Z","timestamp":1747989364000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Delayed Transplantation of Neural Stem Cells Improves Initial Graft Survival after Stroke"],"prefix":"10.1002","volume":"12","author":[{"given":"Rebecca Z","family":"Weber","sequence":"first","affiliation":[{"name":"Institute for Regenerative Medicine University of Zurich  Schlieren 8952 Switzerland"},{"name":"Neuroscience Center Zurich ETH Zurich and University of Zurich  Zurich 8057 Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nora 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