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Xu Y, Yang J, Meng X, Meng S, Sun T, Ding N, Zong C. The synthesis and preliminary immunological evaluation of a dual-adjuvant SARS-CoV-2 RBD vaccine: Covalent integration of TLR7/8 and iNKT cell agonists. Int J Biol Macromol 2024; 270:132258. [PMID: 38735613 DOI: 10.1016/j.ijbiomac.2024.132258] [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: 02/29/2024] [Revised: 05/06/2024] [Accepted: 05/08/2024] [Indexed: 05/14/2024]
Abstract
Covalently linking an adjuvant to an antigenic protein enhances its immunogenicity by ensuring a synergistic delivery to the immune system, fostering a more robust and targeted immune response. Most adjuvant-protein conjugate vaccines incorporate only one adjuvant due to the difficulties in its synthesis. However, there is a growing interest in developing vaccines with multiple adjuvants designed to elicit a more robust and targeted immune response by engaging different aspects of the immune system for complex diseases where traditional vaccines fall short. Here, we pioneer the synthesis of a dual-adjuvants protein conjugate Vaccine 1 by assembling a toll-like receptor 7/8 (TLR7/8) agonist, an invariant natural killer T cell (iNKT) agonist with a clickable bicyclononyne (BCN). The BCN group can bio-orthogonally react with azide-modified severe acute respiratory syndrome coronavirus-2 receptor-binding domain (SARS-CoV-2 RBD) trimer antigen to give the three-component Vaccine 1. Notably, with a mere 3 μg antigen, it elicited a balanced subclass of IgG titers and 20-fold more IgG2a than control vaccines, highlighting its potential for enhancing antibody-dependent cellular cytotoxicity. This strategy provides a practicable way to synthesize covalently linked dual immunostimulants. It expands the fully synthetic self-adjuvant protein vaccine that uses a single adjuvant to include two different types of adjuvants.
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Affiliation(s)
- Ying Xu
- School of Pharmaceutical Sciences, School of Marine Biology and Fisheries, Key Laboratory of Tropical Biological Resources of Ministry of Education, Hainan University, Haikou 570228, China
| | - Jing Yang
- School of Pharmaceutical Sciences, School of Marine Biology and Fisheries, Key Laboratory of Tropical Biological Resources of Ministry of Education, Hainan University, Haikou 570228, China
| | - Xiongyan Meng
- School of Pharmaceutical Sciences, School of Marine Biology and Fisheries, Key Laboratory of Tropical Biological Resources of Ministry of Education, Hainan University, Haikou 570228, China
| | - Shuai Meng
- School of Pharmaceutical Sciences, School of Marine Biology and Fisheries, Key Laboratory of Tropical Biological Resources of Ministry of Education, Hainan University, Haikou 570228, China
| | - Tiantian Sun
- School of Pharmaceutical Sciences, School of Marine Biology and Fisheries, Key Laboratory of Tropical Biological Resources of Ministry of Education, Hainan University, Haikou 570228, China.
| | - Ning Ding
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.
| | - Chengli Zong
- School of Pharmaceutical Sciences, School of Marine Biology and Fisheries, Key Laboratory of Tropical Biological Resources of Ministry of Education, Hainan University, Haikou 570228, China.
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Song D, Crouse B, Vigliaturo J, Wu MM, Heimisdottir D, Kassick AJ, Averick SE, Raleigh MD, Pravetoni M. Multivalent Vaccination Strategies Protect against Exposure to Polydrug Opioid and Stimulant Mixtures in Mice and Rats. ACS Pharmacol Transl Sci 2024; 7:363-374. [PMID: 38357285 PMCID: PMC10863445 DOI: 10.1021/acsptsci.3c00228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/19/2023] [Accepted: 12/01/2023] [Indexed: 02/16/2024]
Abstract
Illicit drug mixtures containing opioids and stimulants have been responsible for the majority of fatal drug overdoses among occasional users, and those with either opioid use disorder (OUD) or substance use disorder (SUD). As a complementary strategy to current pharmacotherapies, active immunization with conjugate vaccines has been proposed as a viable intervention to treat OUD as well as other SUD for which there are either limited or no treatment options. Vaccination against opioids and stimulants could help address the limitations of current medications (e.g., patient access, compliance, misuse liability, and safety) by providing an additional tool to prevent drug misuse and/or overdoses. However, more research is needed to fully understand the potential benefits and limitations of using vaccines to treat SUD and overdose and to inform us on how to deploy this strategy in the field. Previous reports have shown promise by combining two vaccines into bivalent vaccine formulations to concurrently target multiple drugs. Here, multiple individual candidate monovalent vaccines were incrementally combined in multivalent vaccine formulations to simultaneously target fentanyl, carfentanil, oxycodone, heroin, methamphetamine, and their analogs or metabolites. Bi-, tri-, and quadrivalent vaccine formulations induced the formation of independent serum antibody responses against their respective opioid targets and selectively attenuated the distribution of each individual drug to the brain in mice and rats. Results indicate that a single injection of an admixed multivalent vaccine formulation may be more effective than coinjecting multiple monovalent vaccines at multiple sites. Finally, adding a methamphetamine conjugate vaccine to an quadrivalent opioid vaccine in a pentavalent formulation did not interfere with the production of effective antiopioid IgG antibodies. Multivalent vaccines could provide multifaceted, yet selective, protection against polydrug use and exposure.
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Affiliation(s)
- Daihyun Song
- Department
of Pharmacology, University of Minnesota
Medical School, Minneapolis, Minnesota 55455, United States
| | - Bethany Crouse
- Department
of Pharmacology, University of Minnesota
Medical School, Minneapolis, Minnesota 55455, United States
- School
of Veterinary Population Medicine, University
of Minnesota, St. Paul, Minnesota 55455, United States
| | - Jennifer Vigliaturo
- Department
of Pharmacology, University of Minnesota
Medical School, Minneapolis, Minnesota 55455, United States
| | - Mariah M. Wu
- Department
of Pharmacology, University of Minnesota
Medical School, Minneapolis, Minnesota 55455, United States
- School
of Veterinary Population Medicine, University
of Minnesota, St. Paul, Minnesota 55455, United States
| | - Dagny Heimisdottir
- Department
of Pharmacology, University of Minnesota
Medical School, Minneapolis, Minnesota 55455, United States
| | - Andrew J. Kassick
- Neuroscience
Disruptive Research Lab, Allegheny Health
Network Research Institute, Allegheny General Hospital, Pittsburgh, Pennsylvania 15212, United States
| | - Saadyah E. Averick
- Neuroscience
Disruptive Research Lab, Allegheny Health
Network Research Institute, Allegheny General Hospital, Pittsburgh, Pennsylvania 15212, United States
- Neuroscience
Institute, Allegheny Health Network, Allegheny
General Hospital, Pittsburgh, Pennsylvania 15212, United States
| | - Michael D. Raleigh
- Department
of Pharmacology, University of Minnesota
Medical School, Minneapolis, Minnesota 55455, United States
| | - Marco Pravetoni
- Department
of Pharmacology, University of Minnesota
Medical School, Minneapolis, Minnesota 55455, United States
- Department
of Psychiatry and Behavioral Sciences, University
of Washington School of Medicine, Seattle, Washington 98195, United States
- University
of Washington Center for Medication Development for Substance Use
Disorders; Garvey Institute for Brain Solutions, Seattle,Washington 98195, United States
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