{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T23:48:13Z","timestamp":1791244093189,"version":"4.1.0"},"reference-count":59,"publisher":"BMJ","issue":"7","license":[{"start":{"date-parts":[[2025,7,15]],"date-time":"2025-07-15T00:00:00Z","timestamp":1752537600000},"content-version":"unspecified","delay-in-days":14,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["Grant No: 82072353"],"award-info":[{"award-number":["Grant No: 82072353"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Natural Science Foundation of CQ CSTC","award":["Grant No: CSTB2024NSCQ-MSX0167"],"award-info":[{"award-number":["Grant No: CSTB2024NSCQ-MSX0167"]}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["J Immunother Cancer"],"accepted":{"date-parts":[[2025,6,28]]},"published-print":{"date-parts":[[2025,7]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>As a malignancy of hematopoietic origin, the standard-of-care cytoreductive chemotherapy can not provide satisfactory treatment effect for patients with acute myeloid leukemia (AML). Immunotherapy has received increasing attention in leukemia treatment. However, the immunosuppressive microenvironment and low cancer immunogenicity of AML blasts create major obstacles to effectively inducing immune responses.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We developed an extracellular vesicle-based dual-delivery biosystem, which enhanced anti-AML immune responses by activating the immunogenicity of leukemia cells and relieving immunosuppression in AML allografted mice. Red blood cell-derived extracellular vesicles (REVs) were selected as delivery carriers due to the excellent biocompatibility. REVs were ligated with leukemia-targeting peptide P9 and subsequently loaded with immunogenic cell death (ICD) inducer (Doxorubicin, Dox) and indoleamine 2,3-dioxygenase-1 siRNA (siIDO1) to construct a chemoimmunological cascade biosystem (REVs-Dox\/siIDO1-P9).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The biosystem can specifically deliver the loaded Dox and siIDO1 into target leukemia cells and was validated capable of inducing efficient ICD. ICD-mediated release of damage-associated molecular patterns synergistically functions with siIDO1-mediated IDO1 silence to effectually recruit CD8\n                      <jats:sup>+<\/jats:sup>\n                      T cells and enhance CD8\n                      <jats:sup>+<\/jats:sup>\n                      T cell\u2019s functions. In the AML mouse model, REVs-Dox\/siIDO1-P9 can evoke a strong antileukemia response and prolong leukemia-bearing mice survival compared with REVs-Dox\/siNC-P9 and REVs-siIDO1-P9.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Our findings indicate that the extracellular vesicle-based chemoimmunological cascade biosystem provides a novel strategy for AML treatment.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/jitc-2024-011148","type":"journal-article","created":{"date-parts":[[2025,7,15]],"date-time":"2025-07-15T11:50:32Z","timestamp":1752580232000},"page":"e011148","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":13,"title":["Engineered red blood cell extracellular vesicles for delivery of Dox and siIDO1 enhance targeted chemo-immunotherapy of acute myeloid 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