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Although exosome\u2010based RNA interference shows promise, its clinical translation is hindered by inefficient cargo loading, low yields, and poor tumor targeting. We have engineered an exosome platform (cRGD\u2010ExoM) that integrates the following innovations: Firstly, RNA motifs enable the enrichment of shRNA loading by over 80\u2010fold for targeting of ferroptosis regulators (glutathione peroxidase 4\/ferroptosis suppressor protein 1\/ferritin heavy chain [GPX4\/FSP1\/FTH]). Secondly, Rab4 silencing amplifies exosome biogenesis via dysregulated endosomal recycling, enhancing tumor cell uptake by impairing endosome maturation\u2014a dual\u2010action mechanism that boosts both production and delivery. Thirdly, cRGD peptides confer \u03b1v\u03b23\u2010integrin\u2010specific targeting. cRGD\u2010ExoM induces potent ferroptosis by increasing lipid peroxidation and downregulating GPX4\/FSP1\/FTH, significantly suppressing EC tumor growth in vivo without causing systemic toxicity. The platform's modular design allows for spatiotemporal control of loading, production, and targeting, demonstrating its scalability. This study provides new insights into the precision treatment of endometrial cancer by developing engineered, multifunctional, exosome\u2010based therapeutic drugs that combine mechanism precision and translational feasibility in tumor treatment.<\/jats:p>","DOI":"10.1002\/btm2.70163","type":"journal-article","created":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T07:17:06Z","timestamp":1787901426000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Engineered exosomes with\n                    <scp>RNA<\/scp>\n                    \u2010motif\n                    <scp>short hairpin RNA<\/scp>\n                    loading and Rab4\u2010boosted production enable controlled ferroptosis in endometrial carcinoma"],"prefix":"10.1002","volume":"11","author":[{"given":"Jiarui","family":"Zhang","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College 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