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Cui Z, Huang B, Zheng J, Tian J, Zhang W. A TME-enlightened protein-binding photodynamic nanoinhibitor for highly effective oncology treatment. Proc Natl Acad Sci U S A 2024; 121:e2321545121. [PMID: 38713621 PMCID: PMC11098098 DOI: 10.1073/pnas.2321545121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 03/25/2024] [Indexed: 05/09/2024] Open
Abstract
The efficiency of photodynamic therapy (PDT) is greatly dependent on intrinsic features of photosensitizers (PSs), but most PSs suffer from narrow diffusion distances and short life span of singlet oxygen (1O2). Here, to conquer this issue, we propose a strategy for in situ formation of complexes between PSs and proteins to deactivate proteins, leading to highly effective PDT. The tetrafluorophenyl bacteriochlorin (FBC), a strong near-infrared absorbing photosensitizer, can tightly bind to intracellular proteins to form stable complexes, which breaks through the space-time constraints of PSs and proteins. The generated singlet oxygen directly causes the protein dysfunction, leading to high efficiency of PSs. To enable efficient delivery of PSs, a charge-conversional and redox-responsive block copolymer POEGMA-b-(PAEMA/DMMA-co-BMA) (PB) was designed to construct a protein-binding photodynamic nanoinhibitor (FBC@PB), which not only prolongs blood circulation and enhances cellular uptake but also releases FBC on demand in tumor microenvironment (TME). Meanwhile, PDT-induced destruction of cancer cells could produce tumor-associated antigens which were capable to trigger robust antitumor immune responses, facilitating the eradication of residual cancer cells. A series of experiments in vitro and in vivo demonstrated that this multifunctional nanoinhibitor provides a promising strategy to extend photodynamic immunotherapy.
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Affiliation(s)
- Zepeng Cui
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai200237, People’s Republic of China
| | - Baoxuan Huang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai200237, People’s Republic of China
| | - Jiahao Zheng
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai200237, People’s Republic of China
| | - Jia Tian
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai200237, People’s Republic of China
| | - Weian Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai200237, People’s Republic of China
- School of Materials Science and Engineering, East China University of Science and Technology, Shanghai200237, People’s Republic of China
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Chen Y, Xu Z, Wang X, Sun X, Xu X, Li X, Cheng G. Highly Efficient Photodynamic Hydrogel with AIE-Active Photosensitizers toward Methicillin-Resistant Staphylococcus aureus Ultrafast Imaging and Killing. ACS Biomater Sci Eng 2024; 10:3401-3411. [PMID: 38624061 DOI: 10.1021/acsbiomaterials.4c00056] [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] [Indexed: 04/17/2024]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) causes great health hazards to society because most antibiotics are ineffective. Photodynamic treatment (PDT) has been proposed to combat MRSA due to the advantage of imaging-guided no-drug resistance therapy. However, the traditional photosensitizers for PDT are limited by aggregation-caused quenching for imaging and low photodynamic antibacterial efficiency. In this work, we synthesize a new aggregation-induced emission (AIE) photosensitizer (APNO), which can ultrafast distinguish between Gram-positive and Gram-negative bacteria within 3 s by AIE-active photosensitizer imaging. Meanwhile, APNO can generate antibacterial reactive oxygen species under light irradiation, which holds potential for antibacterial PDT. Then, APNO is loaded by PHEAA hydrogel to obtain a highly efficient photodynamic hydrogel (APNO@gel). In vitro results show complete inhibition of MRSA by APNO@gel under lower-power light irradiation. Transcriptome analysis is performed to investigate antibacterial mechanism of APNO@gel. Most importantly, APNO@gel also exhibits significant inhibition and killing ability of MRSA in the MRSA wound infection model, which will further promote rapid wound healing. Therefore, the photodynamic hydrogel provides a promising strategy toward MRSA ultrafast imaging and killing.
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Affiliation(s)
- Ying Chen
- School of Medical Technology, Xuzhou Medical University, Xuzhou 221004, P. R. China
| | - Ziqiang Xu
- School of Medical Technology, Xuzhou Medical University, Xuzhou 221004, P. R. China
| | - Xin Wang
- Department of Molecular Diagnostics, Roche Diagnostics(Shanghai) Limited Company, Shanghai 200131, P. R. China
| | - Xuexue Sun
- Key Laboratory for Medical Tissue Regeneration of Henan Province, Xinxiang Medical University, Xinxiang 453003, P. R. China
| | - Xinhui Xu
- Key Laboratory for Medical Tissue Regeneration of Henan Province, Xinxiang Medical University, Xinxiang 453003, P. R. China
| | - Xiao Li
- School of Medical Technology, Xuzhou Medical University, Xuzhou 221004, P. R. China
| | - Guohui Cheng
- School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, P. R. China
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Xu X, Ma J, Zheng Y, Wang S, Wang A, Zheng N. Secondary Structure in Overcoming Photosensitizers' Aggregation: α-Helical Polypeptides for Enhanced Photodynamic Therapy. Adv Healthc Mater 2023; 12:e2203386. [PMID: 37016763 DOI: 10.1002/adhm.202203386] [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: 12/29/2022] [Revised: 04/03/2023] [Indexed: 04/06/2023]
Abstract
Aggregation caused quenching (ACQ) effect can severely inhibit the application of hydrophobic photosensitizers (PSs) bearing planar and rigid structures. Most of the reported cases utilized random-coiled polymers for the in vivo delivery of PSs, which would inevitably aggravate ACQ effect due to the flexible chains. In this work, the role of polymers' secondary structures (especially α-helical conformation) in overcoming the PSs' aggregation is systemically investigated based on the design of α-helical polypeptides bearing tetraphenylporphyrin (TPP) side chains. Atomistic molecular dynamics simulation, fluorescence quantum yield, and reactive oxygen species (ROS) generation yield are evaluated to demonstrate that α-helical polypeptide backbones can significantly boost both fluorescence quantum yield and ROS by suppressing the π-π stacking interaction between TPP units. The enhanced in vitro and in vivo phototoxicity for helical polypeptides also reveal functions of secondary structures in inhibiting ACQ and improving the membrane activity. Successful in vivo photodynamic therapy (PDT) results in mice bearing H22 tumors showed great potentials for further clinical applications.
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Affiliation(s)
- Xiang Xu
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jinjuan Ma
- Department of Comparative Medicine Laboratory Animal Center, Dalian Medical University Dalian, Dalian, 116000, China
| | - Yubin Zheng
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
- Dalian University of Technology Corporation of Changshu Research Institution, Suzhou, 215500, China
| | - Shaolei Wang
- Cancer Hospital of China Medical University, Liaoning Cancer Hospital&Institute, Department of Radiology Intervention, Shenyang, China
| | - Aiguo Wang
- Department of Comparative Medicine Laboratory Animal Center, Dalian Medical University Dalian, Dalian, 116000, China
| | - Nan Zheng
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
- Dalian University of Technology Corporation of Changshu Research Institution, Suzhou, 215500, China
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Li Z, Xiang J, Zhang Q, Zhao M, Meng Y, Zhong J, Li T, Jia L, Li K, Lu X, Ao Z, Han D. An engineered hydrogel with low-dose antitumor drugs enhances tumor immunotherapy through tumor interstitial wrap. Front Bioeng Biotechnol 2022; 10:1072393. [PMID: 36452209 PMCID: PMC9701709 DOI: 10.3389/fbioe.2022.1072393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 10/31/2022] [Indexed: 11/15/2022] Open
Abstract
Stimulating immunogenic cell death (ICD) is the key to tumor immunotherapy. However, traditional chemoradiotherapy has limited effect on stimulating immunity and often requires repeated administration, which greatly reduces the tumor-killing effect. In this article, we created a sodium alginate hydrogel sustained-release system containing low-dose doxorubicin (Dox) and immune adjuvant R837, which were injected into the interstitial space to wrap around the tumor in situ, achieving a sustained release and long-lasting immune response. Cooperating with immune checkpoint blockade, Dox induced ICD, activated dendritic cells (DCs) and converted immunosuppressive M2-type tumor-associated macrophages (TAM) to tumor-killing M1-type TAMs. Simultaneously, it greatly promoted T cell proliferation and infiltration, and reduced tumor immunosuppressive factors, triggering a robust immune response to suppress tumors in vivo. In conclusion, this anti-tumor strategy based on interstitial injection can achieve continuous local immune stimulation by low-dose chemotherapy drugs, providing a potential approach for tumor immunotherapy.
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Affiliation(s)
- Zhongxian Li
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jiawei Xiang
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Qiang Zhang
- Hebei Key Lab of Nano-Biotechnology, Hebei Key Lab of Applied Chemistry, Yanshan University, Qinhuangdao, China
| | - Mingyuan Zhao
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yuan Meng
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jie Zhong
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Tingting Li
- College of Life Sciences, Bejing University of Chinese Medicine, Beijing, China
| | - Lanxin Jia
- University of Chinese Academy of Sciences, Beijing, China
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Kai Li
- College of Life Sciences, Bejing University of Chinese Medicine, Beijing, China
| | - Xi Lu
- College of Life Sciences, Bejing University of Chinese Medicine, Beijing, China
| | - Zhuo Ao
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- *Correspondence: Zhuo Ao, ; Dong Han,
| | - Dong Han
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- College of Life Sciences, Bejing University of Chinese Medicine, Beijing, China
- *Correspondence: Zhuo Ao, ; Dong Han,
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