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Pang C, Yuan B, Ren K, Xu H, Nie K, Yu C, Liu Z, Zhang Y, Ozkan SA, Yang Q. Activates B lymphocytes and enhanced immune response: A promising adjuvant based on PLGA nanoparticle to improve the sensitivity of ZEN monoclonal antibody. Talanta 2024; 274:126005. [PMID: 38599116 DOI: 10.1016/j.talanta.2024.126005] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 03/13/2024] [Accepted: 03/26/2024] [Indexed: 04/12/2024]
Abstract
In preparing monoclonal antibodies by hybridoma cell technology, the quality of B lymphocytes used for cell fusion directly affects the sensitivity of monoclonal antibodies. To obtain B-lymphocytes producing high-quality specific antibodies for cell fusion during the immunization phase of the antigen, we prepared a TH2-Cell stimulatory delivery system as a novel adjuvant. Astragalus polysaccharide has a good ability to enhance antigenic immune response, and it was encapsulated in biocompatible materials PLGA as an immunostimulatory factor to form the delivery system (APS-PLGA). The preparation conditions of APSP were optimized using RSM to attain the highest utilization of APS. Immunization against ZEN-BSA antigen using APSP as an adjuvant to obtain B lymphocytes producing ZEN-specific antibodies for cell fusion. As results present, APSP could induce a stronger TH2 immune response through differentiating CD4 T cells and promoting IL-4 and IL-6 cytokines. Moreover, it could slow down the release efficiency of ZEN-BSA and enhance the targeting of ZEN-BSA to lymph nodes in vivo experiments. Ultimately, the sensitivity of mouse serum ZEN-specific antibodies was enhanced upon completion of immunization, indicating a significant upregulation of high-quality B lymphocyte expression. In the preparation of monoclonal antibodies, the proportion of positive wells for the first screening was 60%, and the inhibition rates of the antibodies were all similar (>50%). Then we obtained the ZEN monoclonal antibody with IC50 of 0.049 ng/mL, which was more sensitive than most antibodies prepared under conventional adjuvants. Finally, a TRFIAS strip assay was preliminarily established with a LOD value of 0.246 ng/mL.
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Affiliation(s)
- Chengchen Pang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China
| | - Bei Yuan
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China
| | - Keyun Ren
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China
| | - Haitao Xu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China
| | - Kunying Nie
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China
| | - Chunlei Yu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China
| | - Zhanli Liu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China
| | - Yanyan Zhang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China
| | - Sibel A Ozkan
- Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, 06560, Ankara, Turkiye
| | - Qingqing Yang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China; Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo, 255049, People's Republic of China.
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