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Weng W, Ren S, Teng C, Guo J, Guo Q, Zhang W, Zong C, Ding N. Chemoenzymatic synthesis and immunological evaluation of sialyl-Thomsen-Friedenreich (sTF) antigen conjugate to CRM197. Bioorg Med Chem 2024; 100:117615. [PMID: 38342079 DOI: 10.1016/j.bmc.2024.117615] [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: 12/27/2023] [Revised: 01/25/2024] [Accepted: 01/26/2024] [Indexed: 02/13/2024]
Abstract
sTF (sialyl-Thomsen-Friedenreich) is a type of tumor-associated carbohydrate antigens (TACAs) and is highly expressed in various human malignancies. To validate if sTF could be a valuable molecular target for future cancer vaccine development, in this work the sTF antigen was prepared by adopting a strategy combining chemical and enzymatic methods, and then was covalently conjugated to a carrier protein, CRM197. The preliminary immunological evaluation, performed on BALB/c mice, revealed that the sTF-CRM197 conjugate elicited high titers of specific IgG antibodies. FACS experiments showed that the antisera induced by sTF-CRM197 conjugate could specifically recognize and bind to sTF-positive cancer cells T-47D. Furthermore, the conjugate mediated effective and specific antibody-mediated complement-dependent cytotoxicity (CDC).
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Affiliation(s)
- Weizhao Weng
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Sumei Ren
- Research Center of Basic Medicine, Academy of Medical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Changcai Teng
- School of Pharmaceutical Sciences, College of Marine Science, Hainan University, Haikou 570228, China
| | - Jia Guo
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Qiuyu Guo
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Wei Zhang
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Chengli Zong
- School of Pharmaceutical Sciences, College of Marine Science, Hainan University, Haikou 570228, China.
| | - Ning Ding
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.
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Romanò C, Clausen MH. Chemical Biology of αGalCer: a Chemist’s Toolbox for the Stimulation of Invariant Natural Killer T (iNKT) Cells. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Cecilia Romanò
- Technical University of Denmark: Danmarks Tekniske Universitet Department of Chemisty Kemitorvet 207 2800 Kgs. Lyngby DENMARK
| | - Mads Hartvig Clausen
- Technical University of Denmark Department of Chemistry Kemitorvet, Building 201 2800 Kgs. Lyngby DENMARK
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Wang XF, Zhang MJ, He N, Wang YC, Yan C, Chen XZ, Gao XF, Guo J, Luo R, Liu Z. Potent Neutralizing Antibodies Elicited by RBD-Fc-Based COVID-19 Vaccine Candidate Adjuvanted by the Th2-Skewing iNKT Cell Agonist. J Med Chem 2021; 64:11554-11569. [PMID: 34279930 PMCID: PMC8315257 DOI: 10.1021/acs.jmedchem.1c00881] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Indexed: 01/15/2023]
Abstract
The development of a safe and effective COVID-19 vaccine is of paramount importance to terminate the current pandemic. An adjuvant is crucial for improving the efficacy of the subunit COVID19 vaccine. α-Galactosylceramide (αGC) is a classical iNKT cell agonist which causes the rapid production of Th1- and Th2-associated cytokines; we, therefore, expect that the Th1- or Th2-skewing analogues of αGC can better enhance the immunogenicity of the receptor-binding domain in the spike protein of SARS-CoV-2 fused with the Fc region of human IgG (RBD-Fc). Herein, we developed a universal synthetic route to the Th1-biasing (α-C-GC) and Th2-biasing (OCH and C20:2) analogues. Immunization of mice demonstrated that αGC-adjuvanted RBD-Fc elicited a more potent humoral response than that observed with Alum and enabled the sparing of antigens. Remarkably, at a low dose of the RBD-Fc protein (2 μg), the Th2-biasing agonist C20:2 induced a significantly higher titer of the neutralizing antibody than that of Alum.
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Affiliation(s)
- Xi-Feng Wang
- Key Laboratory of Pesticide & Chemical Biology of
Ministry of Education, Hubei International Scientific and Technological Cooperation Base
of Pesticide and Green Synthesis, International Joint Research Center for Intelligent
Biosensing Technology and Health, College of Chemistry, Central China Normal
University, Wuhan, Hubei 430079, P. R. China
| | - Meng-Jia Zhang
- State Key Laboratory of Agricultural Microbiology,
College of Veterinary Medicine, Huazhong Agricultural
University, Wuhan, Hubei 430070, P. R. China
| | - Na He
- Key Laboratory of Pesticide & Chemical Biology of
Ministry of Education, Hubei International Scientific and Technological Cooperation Base
of Pesticide and Green Synthesis, International Joint Research Center for Intelligent
Biosensing Technology and Health, College of Chemistry, Central China Normal
University, Wuhan, Hubei 430079, P. R. China
| | - Ya-Cong Wang
- Key Laboratory of Pesticide & Chemical Biology of
Ministry of Education, Hubei International Scientific and Technological Cooperation Base
of Pesticide and Green Synthesis, International Joint Research Center for Intelligent
Biosensing Technology and Health, College of Chemistry, Central China Normal
University, Wuhan, Hubei 430079, P. R. China
| | - Cheng Yan
- Key Laboratory of Pesticide & Chemical Biology of
Ministry of Education, Hubei International Scientific and Technological Cooperation Base
of Pesticide and Green Synthesis, International Joint Research Center for Intelligent
Biosensing Technology and Health, College of Chemistry, Central China Normal
University, Wuhan, Hubei 430079, P. R. China
| | - Xiang-Zhao Chen
- Key Laboratory of Prevention and Treatment of
Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan
Medical University, Ganzhou, Jiangxi 341000,
China
| | - Xiao-Fei Gao
- Jiangxi Key Laboratory for Mass Spectrometry and
Instrumentation, East China University of Technology, Nanchang,
Jiangxi 330013, China
| | - Jun Guo
- Key Laboratory of Pesticide & Chemical Biology of
Ministry of Education, Hubei International Scientific and Technological Cooperation Base
of Pesticide and Green Synthesis, International Joint Research Center for Intelligent
Biosensing Technology and Health, College of Chemistry, Central China Normal
University, Wuhan, Hubei 430079, P. R. China
| | - Rui Luo
- State Key Laboratory of Agricultural Microbiology,
College of Veterinary Medicine, Huazhong Agricultural
University, Wuhan, Hubei 430070, P. R. China
| | - Zheng Liu
- Key Laboratory of Pesticide & Chemical Biology of
Ministry of Education, Hubei International Scientific and Technological Cooperation Base
of Pesticide and Green Synthesis, International Joint Research Center for Intelligent
Biosensing Technology and Health, College of Chemistry, Central China Normal
University, Wuhan, Hubei 430079, P. R. China
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