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Zhang X, Hu Q, He X, Cui X, Liang Z, Wang L, Deng X, Zhang Z, Sheng W, Han XD. CD16 CAR-T cells enhance antitumor activity of CpG ODN-loaded nanoparticle-adjuvanted tumor antigen-derived vaccinevia ADCC approach. J Nanobiotechnology 2023; 21:159. [PMID: 37208748 DOI: 10.1186/s12951-023-01900-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 04/16/2023] [Indexed: 05/21/2023] Open
Abstract
BACKGROUND Combinatorial immunotherapy strategies for enhancing the responsiveness of immune system have shown great promise for cancer therapy. Engineered nanoformulation incorporated toll-like receptor (TLR) 9 agonist CpG ODN has shown more positive results in suppressing tumor growth and can significantly enhance other immunotherapy activity with combinatorial effects due to the innate and adaptive immunostimulatory effects of CpG. RESULTS In the present work, protamine sulfate (PS) and carboxymethyl β-glucan (CMG) were used as nanomaterials to form nanoparticles through a self-assembly approach for CpG ODN encapsulation to generate CpG ODN-loaded nano-adjuvant (CNPs), which was subsequently mixed with the mixture of mouse melanoma-derived antigens of tumor cell lysates (TCL) and neoantigens to develop vaccine for anti-tumor immunotherapy. The obtained results showed that CNPs was able to effectively deliver CpG ODN into murine bone marrow-derived dendritic cells (DC) in vitro, and remarkably stimulate the maturation of DC cells with proinflammatory cytokine secretion. In addition, in vivo analysis showed that CNPs enhanced anti-tumor activity of PD1 antibody and CNPs-adjuvanted vaccine based on the mixture antigens of melanoma TCL and melanoma-specific neoantigen could not only induce anti-melanoma cellular immune responses, but also elicit melanoma specific humoral immune responses, which significantly inhibited xenograft tumor growth. Furthermore, CD16 CAR-T cells were generated by expressing CD16-CAR in CD3+CD8+ murine T cells. CONCLUSION Our results eventually showed that anti-melanoma antibodies induced by CNPs-adjuvanted TCL vaccines were able to collaborate with CD16-CAR-T cells to generate an enhanced targeted anti-tumor effects through ADCC (antibody dependent cell cytotoxicity) approach. CD16 CAR-T cells has thus a great potential to be an universal promising strategy targeting on solid tumor synergistic immunotherapy via co-operation with TCL-based vaccine.
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Affiliation(s)
- Xiaofei Zhang
- Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
| | - Qin Hu
- Beijing International Science and Technology, Cooperation Base of Antivirus Drug, Department of Environment and Life Science, Beijing University of Technology, Beijing, 100124, China
| | - Xuesong He
- Beijing International Science and Technology, Cooperation Base of Antivirus Drug, Department of Environment and Life Science, Beijing University of Technology, Beijing, 100124, China
| | - Xinyue Cui
- Beijing International Science and Technology, Cooperation Base of Antivirus Drug, Department of Environment and Life Science, Beijing University of Technology, Beijing, 100124, China
| | - Zhaoyuan Liang
- Beijing International Science and Technology, Cooperation Base of Antivirus Drug, Department of Environment and Life Science, Beijing University of Technology, Beijing, 100124, China
| | - Li Wang
- Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
| | - Xiongwei Deng
- Beijing International Science and Technology, Cooperation Base of Antivirus Drug, Department of Environment and Life Science, Beijing University of Technology, Beijing, 100124, China
| | - Ze Zhang
- Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
- Department of Materials Science and Engineering and State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310058, China
- Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Property of Advanced Materials, Beijing International Science and Technology, Cooperation Base of Antivirus Drug, Department of Environment and Life Science, State Key Laboratory of Silicon Materials, Beijing, 100005, Zhejiang 310058, China
| | - Wang Sheng
- Beijing International Science and Technology, Cooperation Base of Antivirus Drug, Department of Environment and Life Science, Beijing University of Technology, Beijing, 100124, China.
- Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Property of Advanced Materials, Beijing International Science and Technology, Cooperation Base of Antivirus Drug, Department of Environment and Life Science, State Key Laboratory of Silicon Materials, Beijing, 100005, Zhejiang 310058, China.
| | - Xiaodong D Han
- Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
- Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Property of Advanced Materials, Beijing International Science and Technology, Cooperation Base of Antivirus Drug, Department of Environment and Life Science, State Key Laboratory of Silicon Materials, Beijing, 100005, Zhejiang 310058, China
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Carboxymethyl-β-glucan/chitosan nanoparticles: new thermostable and efficient carriers for antigen delivery. Drug Deliv Transl Res 2021; 11:1689-1702. [PMID: 33797035 PMCID: PMC8015750 DOI: 10.1007/s13346-021-00968-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2021] [Indexed: 12/18/2022]
Abstract
In the last few decades, nanotechnology has emerged as an important tool aimed at enhancing the immune response against modern antigens. Nanocarriers designed specifically for this purpose have been shown to provide protection, stability, and controlled release properties to proteins, peptides, and polynucleotide-based antigens. Polysaccharides are particularly interesting biomaterials for the construction of these nanocarriers given their wide distribution among pathogens, which facilitates their recognition by antigen-presenting cells (APCs). In this work, we focused on an immunostimulant beta-glucan derivative, carboxymethyl-β-glucan, to prepare a novel nanocarrier in combination with chitosan. The resulting carboxymethyl-β-glucan/chitosan nanoparticles exhibited adequate physicochemical properties and an important protein association efficiency, with ovalbumin as a model compound. Moreover, thermostability was achieved through the optimization of a lyophilized form of the antigen-loaded nanoparticles, which remained stable for up to 1 month at 40 ºC. Biodistribution studies in mice showed an efficient drainage of the nanoparticles to the nearest lymph node following subcutaneous injection, and a significant co-localization with dendritic cells. Additionally, subcutaneous immunization of mice with a single dose of the ovalbumin-loaded nanoparticles led to induced T cell proliferation and antibody responses, comparable to those achieved with alum-adsorbed ovalbumin. These results illustrate the potential of these novel nanocarriers in vaccination.
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