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Meng F, Zhu T, Chen C, Yao H, Zhang R, Li J, Chen X, Huang J, Pan Z, Jiao X, Yin Y. A live attenuated DIVA vaccine affords protection against Listeria monocytogenes challenge in sheep. Microb Pathog 2023:106204. [PMID: 37327947 DOI: 10.1016/j.micpath.2023.106204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 06/18/2023]
Abstract
Listeria monocytogenes (Lm) is a deadly foodborne pathogen that comprises 14 serotypes, among which, serotype 4b Lm is the primary cause of listeriosis outbreaks in humans and animals. Here, we evaluated the safety, immunogenicity, and protective efficacy of a serotype 4b vaccine candidate Lm NTSNΔactA/plcB/orfX in sheep. The infection dynamics, clinical features, and pathological observation verified that the triple genes deletion strain has adequate safety for sheep. Moreover, NTSNΔactA/plcB/orfX significantly stimulated humoral immune response and 78% protection against lethal wild-type strain challenge. Notably, the attenuated vaccine could differentiate infected and vaccinated animals (DIVA) via serology determination of the antibody against listeriolysin O (LLO, encoded by hly) and phosphatidylinositol-specific phospholipase C (PI-PLC, encoded by plcB). These data suggest that the serotype 4b vaccine candidate has high efficacy, safety, and DIVA characteristics, and may be used to prevent Lm infection in sheep, which provides a theoretical basis for its future application in livestock and poultry breeding.
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Affiliation(s)
- Fanzeng Meng
- Jiangsu Key Laboratory of Zoonosis, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, China
| | - Tengfei Zhu
- Jiangsu Key Laboratory of Zoonosis, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, China
| | - Chao Chen
- Jiangsu Key Laboratory of Zoonosis, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, China
| | - Hao Yao
- Jiangsu Key Laboratory of Zoonosis, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, China
| | - Renling Zhang
- Jiangsu Key Laboratory of Zoonosis, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, China
| | - Jing Li
- Jiangsu Key Laboratory of Zoonosis, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, China
| | - Xiang Chen
- Jiangsu Key Laboratory of Zoonosis, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, China
| | - Jinlin Huang
- Jiangsu Key Laboratory of Zoonosis, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, China
| | - Zhiming Pan
- Jiangsu Key Laboratory of Zoonosis, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, China
| | - Xin'an Jiao
- Jiangsu Key Laboratory of Zoonosis, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, China
| | - Yuelan Yin
- Jiangsu Key Laboratory of Zoonosis, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, China.
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Webber AM, Bradstreet TR, Wang X, Guo H, Nelson CA, Fremont DH, Edelson BT, Liu C. Antigen-guided depletion of anti-HLA antibody-producing cells by HLA-Fc fusion proteins. Blood 2022; 140:1803-1815. [PMID: 36070233 PMCID: PMC9837442 DOI: 10.1182/blood.2022016376] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 07/26/2022] [Indexed: 02/02/2023] Open
Abstract
Platelet transfusion and transplantation of allogeneic stem cells and solid organs are life-saving therapies. Unwanted alloantibodies to nonself human leukocyte antigens (HLAs) on donor cells increase the immunological barrier to these therapies and are important causes of platelet transfusion refractoriness and graft rejection. Although the specificities of anti-HLA antibodies can be determined at the allelic level, traditional treatments for antibody-mediated rejection nonselectively suppress humoral immunity and are not universally successful. We designed HLA-Fc fusion proteins with a bivalent targeting module derived from extracellular domains of HLA and an Fc effector module from mouse IgG2a. We found that HLA-Fc with A2 (A2Fc) and B7 (B7Fc) antigens lowered HLA-A2- and HLA-B7-specific reactivities, respectively, in sera from HLA-sensitized patients. A2Fc and B7Fc bound to B-cell hybridomas bearing surface immunoglobulins with cognate specificities and triggered antigen-specific and Fc-dependent cytotoxicity in vitro. In immunodeficient mice carrying HLA-A2-specific hybridoma cells, A2Fc treatment lowered circulating anti-HLA-A2 levels, abolished the outgrowth of hybridoma cells, and prolonged survival compared with control groups. In an in vivo anti-HLA-A2-mediated platelet transfusion refractoriness model, A2Fc treatment mitigated refractoriness. These results support HLA-Fc being a novel strategy for antigen-specific humoral suppression to improve transfusion and transplantation outcomes. With the long-term goal of targeting HLA-specific memory B cells for desensitization, further studies of HLA-Fc's efficacy in immune-competent animal models are warranted.
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Affiliation(s)
- Ashlee M. Webber
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO
| | - Tara R. Bradstreet
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO
| | - Xiaoli Wang
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO
| | | | - Christopher A. Nelson
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO
| | - Daved H. Fremont
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO
| | - Brian T. Edelson
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO
| | - Chang Liu
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO
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A novel and simple method to produce large amounts of recombinant soluble peptide/major histocompatibility complex monomers for analysis of antigen-specific human T cell receptors. N Biotechnol 2018; 49:169-177. [PMID: 30465909 DOI: 10.1016/j.nbt.2018.11.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 11/14/2018] [Accepted: 11/18/2018] [Indexed: 11/24/2022]
Abstract
Soluble peptide/major histocompatibility complex (p/MHC) tetramers that directly bind to T cell receptors (TCRs) allow the direct quantification, phenotypic characterization and isolation of antigen-specific T cells. Conventionally, soluble p/MHC tetramers have been produced using Escherichia coli, but this method requires refolding of the recombinant proteins. Here, a novel and technically simple method that does not require protein refolding in vitro has been developed for the high-throughput generation of soluble and functional p/MHC-single chain trimer (SCT) monomers and tetramers in a mammalian cell system. The p/MHC-SCT tetramers generated by this method bound to the corresponding antigen-specific TCRs. Moreover, the immobilized p/MHC-SCT monomers effectively activated antigen-specific T cell lines as well as primary T cells in an antigen-specific manner. This technique provides a robust improvement in the technology, such that recombinant soluble p/MHC monomers and tetramers can be produced more readily and which enables their use in analysis of antigen-specific T cells in basic and clinical studies.
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Chen R, Wang S, Yao Y, Zhou Y, Zhang C, Fang J, Zhang D, Zhang L, Pan J. Anti-metastatic effects of DNA vaccine encoding single-chain trimer composed of MHC I and vascular endothelial growth factor receptor 2 peptide. Oncol Rep 2015; 33:2269-76. [PMID: 25739076 DOI: 10.3892/or.2015.3820] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 02/09/2015] [Indexed: 11/06/2022] Open
Abstract
Vascular endothelial growth factor receptor 2 (VEGFR2)-mediated signaling is the key rate-limiting step in angiogenesis. VEGFR2 serves as the most important target of anti-angiogenic therapy for cancers. Single-chain trimer (SCT) comprising antigen peptide, β2-microglobulin (β2m), and major histocompatibility complex (MHC) class I heavy chain was a particularly powerful strategy involved in the increase of the potency of DNA vaccine against tumors and infections. In the present study, we constructed an SCT-encoding VEGFR2 antigen peptide [aa400-408, also known as kinase insert domain-containing receptor (KDR2)], β2m, and mouse MHC class I heavy chain H-2Db [pcDNA3.1(+)-KDR2-β2m-H-2Db, or SCT-KDR2]. The constructed SCT-KDR2 DNA was efficiently expressed in the human A293 embryonic kidney cell line. Intradermal immunization of C57BL/6 mice with SCT-KDR2 DNA was able to successfully break self-immunological tolerance and induce robust cytotoxic T‑lymphocyte (CTL) response to VEGFR2, leading to marked suppression of tumor cell‑induced angiogenesis and metastasis in murine models of B16 melanoma and 3LL Lewis lung carcinoma. Taken together, the results showed that VEGFR2-targeted SCT vaccination is an effective modality that can be utilized in anti-angiogenic active immunotherapy for various types of cancer.
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Affiliation(s)
- Ruiling Chen
- Department of Clinical Medicine, Zhejiang University City College School of Medicine, Hangzhou, Zhejiang 310015, P.R. China
| | - Shengchao Wang
- Section Three of the Department of General Surgery, First Affliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang 832008, P.R. China
| | - Yunliang Yao
- Department of Microbiology and Immunology, Huzhou Teacher's College School of Medicine, Huzhou, Zhejiang 313000, P.R. China
| | - Yun Zhou
- Department of Pathogen Biology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Chong Zhang
- Department of Clinical Medicine, Zhejiang University City College School of Medicine, Hangzhou, Zhejiang 310015, P.R. China
| | - Jie Fang
- Department of Clinical Medicine, Zhejiang University City College School of Medicine, Hangzhou, Zhejiang 310015, P.R. China
| | - Dayong Zhang
- Department of Clinical Medicine, Zhejiang University City College School of Medicine, Hangzhou, Zhejiang 310015, P.R. China
| | - Lihuang Zhang
- Department of Clinical Medicine, Zhejiang University City College School of Medicine, Hangzhou, Zhejiang 310015, P.R. China
| | - Jianping Pan
- Department of Clinical Medicine, Zhejiang University City College School of Medicine, Hangzhou, Zhejiang 310015, P.R. China
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Matsui M, Kawano M, Matsushita S, Akatsuka T. Introduction of a point mutation into an HLA class I single-chain trimer induces enhancement of CTL priming and antitumor immunity. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2014; 1:14027. [PMID: 26015969 PMCID: PMC4362367 DOI: 10.1038/mtm.2014.27] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 05/25/2014] [Accepted: 05/26/2014] [Indexed: 01/02/2023]
Abstract
We previously discovered one particular HLA-A*02:01 mutant that enhanced peptide-specific cytotoxic T lymphocyte (CTL) recognition in vitro compared to wild-type HLA-A*02:01. This mutant contains a single amino acid substitution from histidine to leucine at position 74 (H74L) that is located in the peptide-binding groove. To investigate the effect of the H74L mutation on the in vivo CTL priming, we took advantage of the technology of the HLA class I single-chain trimer (SCT) in which three components involving a peptide, β2 microglobulin and the HLA class I heavy chain are joined together via flexible linkers. We generated recombinant adenovirus expressing SCT comprised influenza A matrix protein (FMP)-derived peptide, β2 microglobulin and the H74L heavy chain. HLA-A*02:01 transgenic mice were immunized with the adenovirus, and the induction of peptide-specific CTLs and antitumor immunity was investigated. It was clearly shown that the H74L mutation enabled the HLA-A*02:01 SCT molecule to dramatically enhance both in vivo priming of FMP-specific CTLs and protection against a lethal challenge of tumor cells expressing FMP. These data present the first evidence that a simple point mutation in the HLA class I heavy chain of SCT is beneficial for improving CTL-based immunotherapy and prophylaxis to control tumors.
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Affiliation(s)
- Masanori Matsui
- Department of Microbiology, Saitama Medical University , Iruma-gun, Saitama, Japan
| | - Masaaki Kawano
- Department of Allergy and Immunology, Saitama Medical University , Iruma-gun, Saitama, Japan
| | - Sho Matsushita
- Department of Allergy and Immunology, Saitama Medical University , Iruma-gun, Saitama, Japan ; Allergy Center, Saitama Medical University , Iruma-gun, Saitama, Japan
| | - Toshitaka Akatsuka
- Department of Microbiology, Saitama Medical University , Iruma-gun, Saitama, Japan
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