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Tao S, Song Y, Ding S, He R, Shi Q, Hu F. Dendrobium officinale polysaccharide-based carrier to enhance photodynamic immunotherapy. Carbohydr Polym 2023; 317:121089. [PMID: 37364958 DOI: 10.1016/j.carbpol.2023.121089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 05/31/2023] [Accepted: 06/01/2023] [Indexed: 06/28/2023]
Abstract
Photodynamic therapy (PDT) eradicates tumors via the generation of toxic reactive oxygen species (ROS) by activation of a photosensitizer (PS) with appropriate light. Local PDT toward tumors can trigger the immune response to inhibit distant tumors, but the immune response is usually insufficient. Herein, we used a biocompatible herb polysaccharide with immunomodulatory activity as the carrier of PS to enhance the immune inhibition of tumors after PDT. The Dendrobium officinale polysaccharide (DOP) is modified with hydrophobic cholesterol to serve as an amphiphilic carrier. The DOP itself can promote dendritic cell (DC) maturation. Meanwhile, TPA-3BCP are designed to be cationic aggregation-induced emission PS. The structure of one electron-donor linking to three electron-acceptors endows TPA-3BCP with high efficiency to produce ROS upon light irradiation. And the nanoparticles are designed with positively charged surfaces to capture antigens released after PDT, which can protect the antigens from degradation and improve the antigen-uptake efficiency by DCs. The combination of DOP-induced DC maturation and antigen capture-increased antigen-uptake efficiency by DCs significantly improves the immune response after DOP-based carrier-mediated PDT. Since DOP is extracted from the medicinal and edible Dendrobium officinale, the DOP-based carrier we designed is promising to be developed for enhanced photodynamic immunotherapy in clinic.
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Affiliation(s)
- Shengchang Tao
- Department of Pharmacy, The Tenth Affiliated Hospital of Southern Medical University (Dongguan People's Hospital), Dongguan 523059, China; Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - Yuchen Song
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - Shaobo Ding
- Department of Pharmacy, The Tenth Affiliated Hospital of Southern Medical University (Dongguan People's Hospital), Dongguan 523059, China
| | - Ruirong He
- Department of Pharmacy, The Tenth Affiliated Hospital of Southern Medical University (Dongguan People's Hospital), Dongguan 523059, China
| | - Qiankun Shi
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - Fang Hu
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China; Division of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China.
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Wang P, Wu B, Li M, Song Y, Chen C, Feng G, Mao D, Hu F, Liu B. Lysosome-Targeting Aggregation-Induced Emission Nanoparticle Enables Adoptive Macrophage Transfer-Based Precise Therapy of Bacterial Infections. ACS Nano 2023. [PMID: 37235750 DOI: 10.1021/acsnano.3c00796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Traditional antibacterial procedures are getting inefficient due to the emergence of antimicrobial resistance, which makes alternative treatments in urgent demand. However, the selectivity toward infectious bacteria is still challenging. Herein, by taking advantage of the self-directed capture of infectious bacteria by macrophages, we developed a strategy to realize precise in vivo antibacterial photodynamic therapy (APDT) through adoptive photosensitizer-loaded macrophage transfer. TTD with strong reactive oxygen species (ROS) production and bright fluorescence was first synthesized and was subsequently formulated into TTD nanoparticles for lysosome targeting. TTD-loaded macrophages (TLMs) were constructed by direct incubation of TTD nanoparticles with macrophages, in which the TTD was localized in the lysosomes to meet the captured bacteria in the phagolysosomes. The TLMs could precisely capture and eradicate bacteria while being activated toward the proinflammatory and antibacterial M1 phenotype upon light illumination. More importantly, after subcutaneous injection, TLMs could effectively inhibit bacteria in the infected tissue through APDT, leading to good tissue recovery from severe bacterial infection. Overall, the engineered cell-based therapeutic approach shows great potential in the treatment of severe bacterial infectious diseases.
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Affiliation(s)
- Peng Wang
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - Biru Wu
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - Min Li
- Precision Medicine Institute, The First Affiliated Hospital of Sun Yat-Sen University, Sun Yat-Sen University, Guangzhou 510080, China
| | - Yuchen Song
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - Chengjian Chen
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore
| | - Guangxue Feng
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Duo Mao
- Precision Medicine Institute, The First Affiliated Hospital of Sun Yat-Sen University, Sun Yat-Sen University, Guangzhou 510080, China
| | - Fang Hu
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore
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Ouyang F, Zhang X, Zhang L, Liu Y, Shuai Q. Enhanced photo-hypoxia-activated combination therapy traced by AIE photosensitizer and targeted by hyaluronic acid: Disulphide bond interference of detoxification barrier. J Photochem Photobiol B 2022; 234:112535. [PMID: 35930948 DOI: 10.1016/j.jphotobiol.2022.112535] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 07/22/2022] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
The treatment efficacy of anticancer drugs in complex physiological environments is still restricted by multi-drug resistance. To overcome this issue, a nanodrug system of HA-SS@CuS@ZIF-8@TPZ&TBMACN (HSCZTT) that breaks through the detoxification barrier for tirapazamine (TPZ) delivery was developed in this manuscript. In addition to the photothermal effect aroused by CuS in HSCZTT, which can damage tumour cells, TBMACN with photostable fluorescence in the aggregate state can also generate sufficient reactive oxygen species (ROS) to destroy tumour cells. The continuous consumption of oxygen in PDT aggravates the hypoxic environment of tumours, which further activates the TPZ released in the acidic microenvironment of the tumour to achieve apoptosis of the tumour cells. The HSCZTT can not only target the CD44 receptor overexpressed on the surface of the cancer cell, but can also effectively consume a large amount of glutathione (GSH) through the disulphide bond-modified hyaluronic acid, which serves as a targeted disulphide bond, interfering with the detoxification barrier. Our finding presents a rational strategy to overcome multidrug resistance for the improved efficacy of anticancer drugs by the targeting of Hyaluronic acid (HA), release of the drug by the acid response of ZIF-8, breakthrough of the detoxification barrier, precise positioning of the drug release and combined treatment with phototherapy and hypoxia-activated chemotherapy.
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Affiliation(s)
- Feng Ouyang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Xiaoli Zhang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Li Zhang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yu Liu
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Qi Shuai
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
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