期刊
ACS NANO
卷 16, 期 7, 页码 10742-10753出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.2c02605
关键词
aggregation-induced emission; glutamine blockade; nutrient partitioning; distant metastasis; tumor recurrence
类别
资金
- National Natural Science Foundation of China [52122317, 22175120]
- Developmen-tal Fund for Science and Technology of Shenzhen government [JCYJ20190808153415062, RCYX20200714114525101]
- Natural Science Foundation for Distinguished Young Scholars of Guangdong Province [2020B1515020011]
- Instrumental Analysis Center of Shenzhen University
The biomimetic immune metabolic nanoplatform designed in this study achieves specific delivery by encapsulating an aggregation-induced emission photosensitizer and a glutamine antagonist into a cancer cell membrane. This approach improves the tumor hypoxic environment, induces immunogenic cell death, promotes dendritic cell maturation, inhibits tumor proliferation, triggers tumor-specific immune responses, and prevents tumor metastasis with the combination of anti-PD-1 therapy.
The intense metabolism of cancer cells leads to hypoxia and lack of crucial nutrients in the tumor micro-environment, which hinders the function of immune cells. We designed a biomimetic immune metabolic nanoplatform, in which a type I aggregation-induced emission photosensitizer and a glutamine antagonist are encapsulated into a cancer cell membrane for achieving specific delivery in vivo. This approach greatly satisfies the glucose and glutamine required by T cells, significantly improves the tumor hypoxic environment, enables the reprogramming of tumor and immune cell metabolism, induces immunogenic cell death, promotes dendritic cell maturation, and effectively inhibits tumor proliferation. Strong tumor-specific immune responses are further triggered, and the tumor immune-suppressing microenvironment is modulated, by decreasing the number of immunosuppressive cells. Moreover, subsequent combination with anti-PD-1 is able to generate strong abscopal effects to prevent tumor distant metastasis and provide long-term immune memory against tumor recurrence.
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