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Liu D, Liang M, Tao Y, Liu H, Liu Q, Bing W, Li W, Qi J. Hypoxia-accelerating pyroptosis nanoinducers for promoting image-guided cancer immunotherapy. Biomaterials 2024; 309:122610. [PMID: 38749307 DOI: 10.1016/j.biomaterials.2024.122610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 05/06/2024] [Accepted: 05/08/2024] [Indexed: 06/03/2024]
Abstract
Precise image-guided cancer immunotherapy holds immense potential in revolutionizing cancer treatment. The strategies facilitating activatable imaging and controlled therapeutics are highly desired yet to be developed. Herein, we report a new pyroptosis nanoinducer that integrates aggregation-induced emission luminogen (AIEgen) and DNA methyltransferase inhibitor with hypoxia-responsive covalent organic frameworks (COFs) for advanced image-guided cancer immunotherapy. We first synthesize and compare three donor-acceptor type AIEgens featuring varying numbers of electron-withdrawing units, and find that the incorporation of two acceptors yields the longest response wavelength and most effective photodynamic therapy (PDT) property, surpassing the performance of analogs with one or three acceptor groups. A COF-based nanoplatform containing AIEgen and pyroptosis drug is successfully constructed via the one-pot method. The intra-COF energy transfer significantly quenches AIEgen, in which both fluorescence and PDT properties greatly enhance upon hypoxia-triggered COF degradation. Moreover, the photodynamic process exacerbates hypoxia, accelerating pyroptosis drug release. The nanoagent enables sensitive delineation of tumor site through in situ activatable fluorescence signature. Thanks to the exceptional ROS production capabilities and hypoxia-accelerating drug release, the nanoagent not only inhibits primary tumor growth but also impedes the progression of distant tumors in 4T1 tumor-bearing mice through potent pyroptosis-mediated immune response. This research introduces a novel strategy for achieving activatable phototheranostics and self-accelerating drug release for synergetic cancer immunotherapy.
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Affiliation(s)
- Dongfang Liu
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, 130022, China; School of Chemistry and Life Science, Changchun University of Technology, Changchun, 130012, China
| | - Mengyun Liang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Yongyou Tao
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Hanwen Liu
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Qian Liu
- Department of Urology, Tianjin First Central Hospital, Tianjin, 300192, China
| | - Wei Bing
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, 130022, China; School of Chemistry and Life Science, Changchun University of Technology, Changchun, 130012, China.
| | - Wen Li
- Tianjin Key Laboratory of Biomedical Materials and Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300192, China.
| | - Ji Qi
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, 300071, China.
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Han T, Sun Y, Zhao C, Wang HY, Yu H, Liu Y. Mitochondrial-Targeted Ratiometric Near-Infrared Fluorescence Probe for Monitoring Nitric Oxide in Rheumatoid Arthritis. J Med Chem 2024; 67:4026-4035. [PMID: 38359302 DOI: 10.1021/acs.jmedchem.3c02344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Rheumatoid arthritis (RA) is a destructive autoimmune disease, where nitric oxide (NO) is closely implicated in the inflammatory processes of RA. Therefore, direct visualization of NO is essential to assess the pathological changes in RA. Herein, a mitochondrial-targeted near-infrared ratiometric fluorescent probe (NFL-NH2), based on the intramolecular charge transfer effect, was synthesized and applied to monitor the changes of NO content in early RA. Specially, probe NFL-NH2 showed a 44-fold fluorescent intensity ratio (I705/I780) response toward NO with a detection limit of 0.536 nM, enabling qualitative and quantitative analysis of NO. Additionally, NFL-NH2 can accurately target mitochondria and sensitively detect exogenous and endogenous NO in RAW 264.7 cells. Notably, in vivo RA monitoring assays demonstrated that NFL-NH2 can rapidly detect NO levels associated with the inflammatory damage degree in RA mice models by ratiometric fluorescence imaging. These results validate that NFL-NH2 holds significant potential for diagnosing NO-mediated RA diseases.
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Affiliation(s)
- Tingting Han
- School of Engineering, China Pharmaceutical University, Nanjing 211198, China
| | - Ye Sun
- School of Engineering, China Pharmaceutical University, Nanjing 211198, China
| | - Chao Zhao
- School of Engineering, China Pharmaceutical University, Nanjing 211198, China
| | - Hai-Yan Wang
- School of Mechanical Engineering, Southeast University, Nanjing 211189, China
| | - Hui Yu
- School of Engineering, China Pharmaceutical University, Nanjing 211198, China
| | - Yi Liu
- School of Engineering, China Pharmaceutical University, Nanjing 211198, China
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