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This poses a significant challenge to the efficacy of antitumor immunity. To address this, a tumor\u2010selective nano\u2010dispatcher, PIMDQ\/Syro\u2010RNP, to enforce the immunotherapeutic effect through regulation of lactate metabolism and activation of toll\u2010like receptors is developed. By using the tumor\u2010targeting properties of c\u2010RGD, the system can effectively deliver monocarboxylate transporters 4 (MCT4) inhibitor (Syro) to inhibit lactate efflux in tumor cells, leading to decreased lactate levels in the tumor microenvironment (TME) and increased accumulation within tumor cells. The reduction of lactate in TME will reduce the nutritional support for regulatory T cells (Tregs) and promote the effector function of T cells. The accumulation of lactate in tumor cells will lead to tumor death due to cellular acidosis. In addition, it will also reduce the uptake of glucose by tumor cells, reduce nutrient plunder, and further weaken the inhibition of T cell function. Furthermore, the pH\u2010responsive release of Toll\u2010like receptors (TLR)\u00a07\/8 agonist IMDQ within the TME activates dendritic cells (DCs) and promotes the infiltration of T cells. These findings offer a promising approach for enhancing tumor immune response through targeted metabolic interventions.<\/jats:p>","DOI":"10.1002\/smll.202406870","type":"journal-article","created":{"date-parts":[[2024,10,11]],"date-time":"2024-10-11T02:56:20Z","timestamp":1728615380000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Tumor\u2010Selective Nano\u2010Dispatcher Enforced Cancer Immunotherapeutic Effects via Regulating Lactate Metabolism and Activating Toll\u2010Like Receptors"],"prefix":"10.1002","volume":"21","author":[{"given":"Yang","family":"Liu","sequence":"first","affiliation":[{"name":"NMPA Key Laboratory for Technology Research and Evaluation of Drug Products Key Laboratory of Chemical Biology (Ministry of Education) Shandong Key Laboratory of Targeted Drug Delivery and Advanced Pharmaceutics Department of Pharmaceutics School of Pharmaceutical Sciences Cheeloo College of Medicine Shandong 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