A Robust ROS Generation and Ferroptotic Lipid Modulation Nanosystem for Mutual Reinforcement of Ferroptosis and Cancer Immunotherapy

被引:0
作者
Jiang, Chao [1 ,2 ,3 ,4 ]
Li, Wenxi [1 ,2 ,3 ]
Yan, Jie [1 ,2 ,3 ]
Yu, Xinying [1 ,2 ,3 ]
Feng, Yuzhao [1 ,2 ,3 ]
Li, Bei [1 ,2 ,3 ]
Liu, Yuan [4 ]
Dai, Yunlu [1 ,2 ,3 ]
机构
[1] Univ Macau, Fac Hlth Sci, Canc Ctr, Macau 999078, Peoples R China
[2] Univ Macau, Inst Translat Med, Fac Hlth Sci, Macau 999078, Peoples R China
[3] Univ Macau, MoE Frontiers Sci Ctr Precis Oncol, Macau 999078, Peoples R China
[4] Chinese Acad Sci, Zhejiang Canc Hosp, Hangzhou Inst Med HIM, Hangzhou 310022, Zhejiang, Peoples R China
基金
中国国家自然科学基金;
关键词
cancer immunotherapy; ferroptosis; ferroptotic lipids; immunogenic cell death; reactive oxygen species; MECHANISMS; SUPPRESSION; THERAPY; CELLS;
D O I
10.1002/adhm.202401502
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
Ferroptosis initiation is often utilized for synergistic immunotherapy. While, current immunotherapy is limited by an immunosuppressive tumor microenvironment (TME), and ferroptosis is limited by insufficient reactive oxygen species (ROS) and ferroptotic lipids in tumor cells. Here, an arachidonic acid (AA) loaded nanosystem (CTFAP) is developed to mutually reinforce ferroptosis and cancer immunotherapy by augmenting ROS generation and modulating ferroptotic lipids. CTFAP is composed of acid-responsive core calcium peroxide (CaO2) nanoparticles, ferroptotic lipids sponsor AA, tetracarboxylic porphyrin (TCPP) and Fe3+ based metal-organic framework structure, and biocompatible mPEG-DSPE for improved stability. Once endocytosed by tumor cells, CTFAP can release oxygen (O2) and hydrogen peroxide (H2O2) in the acidic TME, facilitating TCPP-based sonodynamic therapy and Fe3+-mediated Fenton-like reactions to generate substantial ROS for cell ferroptosis initiation. The immunogenic cell death (ICD) after ferroptosis promotes interferon gamma (IFN-gamma) secretion to up-regulate the expression of long-chain family member 4 (ACSL4), cooperating with the released AA from CTFAP to accelerate the accumulation of lipid peroxidation (LPO) and thereby promoting ferroptosis in cancer cells.CTFAP with ultrasound treatment efficiently suppresses tumor growth, has great potential to challenges in cancer immunotherapy. To mutually promote ferroptosis and cancer immunotherapy, a CaO2 core-based nanosystem (CTFAP) is developed to augment reactive oxygen species generation for ferroptosis initiation. Immunogenic cancer cell death promotes dendritic cell maturation and stimulates systemic antitumor immune responses to secrete IFN-gamma. The released IFN-gamma further up-regulates long-chain family member 4 expression, cooperating with the released arachidonic acid from the nanosystem in turn promoting cell ferroptosis. image
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页数:10
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