Nature Materials：北京大学汪贻广/张强团队开发原位生成的疫苗样焦亡囊泡，用于癌症免疫治疗

Core Viewpoint - The article discusses a novel approach to cancer immunotherapy through the development of an in situ-generated vaccine-like pyroptosome, which activates a strong anti-tumor immune response by inducing pyroptosis in tumor cells, thus providing a new strategy for personalized cancer treatment [3][4][7]. Summary by Sections Research Development - The study introduces a systemic injection of a nano-adjuvant that induces pyroptosis, leading to the secretion of pyroptosomes in the tumor area, which enhances anti-tumor immunity and promotes the elimination of primary tumors and metastatic nodules [3][7]. Mechanism of Action - The mechanism involves several coordinated steps: 1. Induction of pyroptosis: Nano-particles accumulate in the tumor area and induce pyroptosis through specific methods (e.g., light activation), causing cell membrane rupture and release of cellular contents [8]. 2. Formation of pyroptosomes: The released contents, including tumor antigens and pro-inflammatory cytokines, are encapsulated into structures called pyroptosomes, acting as natural in situ vaccines [8]. 3. In situ immune activation: The nano-adjuvant releases TLR7/8 agonists into the pyroptosomes, providing strong immune activation signals, thus forming an efficient in situ vaccine platform that activates all key steps of the cancer-immunity cycle [8]. Advantages and Significance - The technology offers high efficiency and synergy by releasing a large amount of antigens and danger signals, effectively activating both innate and adaptive immunity [9]. - The in situ strategy focuses the immune response locally at the tumor site, avoiding systemic toxicity associated with widespread immune stimulation [9]. - This research represents a sophisticated nanomedicine strategy that safely and effectively manipulates immune responses in the tumor microenvironment, showcasing significant clinical translation potential [11]. Multifunctionality and Prospects - The platform not only clears primary tumors but also inhibits metastatic lesions and provides long-term immune memory to prevent cancer recurrence [13]. - This study provides a new design and conceptual framework for developing more efficient and personalized cancer immunotherapies, such as personalized cancer vaccines [13].