癌症研究
刺
光动力疗法
化学
免疫疗法
免疫佐剂
免疫原性细胞死亡
医学
免疫系统
抗原
免疫学
工程类
航空航天工程
有机化学
作者
Kaiyuan Wang,Yang Li,Xia Wang,Zhijun Zhang,Liping Cao,Xiaoyuan Fan,Bin Wan,Fengxiang Liu,Xuanbo Zhang,Zhonggui He,Yingtang Zhou,Dong Wang,Jin Sun,Xiaoyuan Chen
标识
DOI:10.1038/s41467-023-38601-7
摘要
Abstract The immunologically “cold” microenvironment of triple negative breast cancer results in resistance to current immunotherapy. Here, we reveal the immunoadjuvant property of gas therapy with cyclic GMP-AMP synthase-stimulator of interferon genes (cGAS-STING) pathway activation to augment aggregation-induced emission (AIE)-active luminogen (AIEgen)-based photoimmunotherapy. A virus-mimicking hollow mesoporous tetrasulfide-doped organosilica is developed for co-encapsulation of AIEgen and manganese carbonyl to fabricate gas nanoadjuvant. As tetra-sulfide bonds are responsive to intratumoral glutathione, the gas nanoadjuvant achieves tumor-specific drug release, promotes photodynamic therapy, and produces hydrogen sulfide (H 2 S). Upon near-infrared laser irradiation, the AIEgen-mediated phototherapy triggers the burst of carbon monoxide (CO)/Mn 2+ . Both H 2 S and CO can destroy mitochondrial integrity to induce leakage of mitochondrial DNA into the cytoplasm, serving as gas immunoadjuvants to activate cGAS-STING pathway. Meanwhile, Mn 2+ can sensitize cGAS to augment STING-mediated type I interferon production. Consequently, the gas nanoadjuvant potentiates photoimmunotherapy of poorly immunogenic breast tumors in female mice.
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