Octopus-inspired polymeric nanovaccine enables high antigen loading and robust T cell activation for cancer immunotherapyстатьяНаучно-популярная статья
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Дата последнего поиска статьи во внешних источниках: 4 марта 2026 г.
Аннотация:Tumor vaccines hold significant promise for immunotherapy, but are limited by low antigen loading capacity,inefficient cytosolic delivery, and suboptimal T cell activation. Here, we present an octopus-inspired polymericnanovaccine that integrates high antigen-loading capacity and effective cytosolic delivery within a singlepolymeric platform. The nanovaccine is constructed by encapsulating antigens with an imidazole-functionalizedfluorinated polyethyleneimine and Mn2+ ions, forming a structure that mimics octopus tentacles and suctioncups, where the PEI backbone acts as tentacle-like arms and the imidazole-Mn2+units serve as suction cups. Thismultivalent interface enables robust antigen binding through electrostatic, coordination, and hydrophobic interactions.Beyond stabilizing the antigen payload, the amphiphilic cationic design of the polymers offers efficientcytosolic delivery of antigens into dendritic cells (DCs). Meanwhile, the intracellular release of Mn2+activates the STING pathway, promoting innate immune responses. Consequently, the vaccine elicits robustantigen-specific CD8+ T cell responses and durable antitumor immunity in multiple tumor models. This workpresents a streamlined, multifunctional strategy to overcome delivery barriers in cancer vaccines.