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Ruzzi F, Semprini MS, Scalambra L, Palladini A, Angelicola S, Cappello C, Pittino OM, Nanni P, Lollini PL. Virus-like Particle (VLP) Vaccines for Cancer Immunotherapy. Int J Mol Sci 2023; 24:12963. [PMID: 37629147 PMCID: PMC10454695 DOI: 10.3390/ijms241612963] [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: 07/31/2023] [Revised: 08/14/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
Cancer vaccines are increasingly being studied as a possible strategy to prevent and treat cancers. While several prophylactic vaccines for virus-caused cancers are approved and efficiently used worldwide, the development of therapeutic cancer vaccines needs to be further implemented. Virus-like particles (VLPs) are self-assembled protein structures that mimic native viruses or bacteriophages but lack the replicative material. VLP platforms are designed to display single or multiple antigens with a high-density pattern, which can trigger both cellular and humoral responses. The aim of this review is to provide a comprehensive overview of preventive VLP-based vaccines currently approved worldwide against HBV and HPV infections or under evaluation to prevent virus-caused cancers. Furthermore, preclinical and early clinical data on prophylactic and therapeutic VLP-based cancer vaccines were summarized with a focus on HER-2-positive breast cancer.
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Affiliation(s)
- Francesca Ruzzi
- Department of Medical and Surgical Sciences (DIMEC) and Alma Mater Institute on Healthy Planet, University of Bologna, 40126 Bologna, Italy; (F.R.); (M.S.S.); (L.S.); (S.A.); (C.C.); (O.M.P.); (P.N.)
| | - Maria Sofia Semprini
- Department of Medical and Surgical Sciences (DIMEC) and Alma Mater Institute on Healthy Planet, University of Bologna, 40126 Bologna, Italy; (F.R.); (M.S.S.); (L.S.); (S.A.); (C.C.); (O.M.P.); (P.N.)
| | - Laura Scalambra
- Department of Medical and Surgical Sciences (DIMEC) and Alma Mater Institute on Healthy Planet, University of Bologna, 40126 Bologna, Italy; (F.R.); (M.S.S.); (L.S.); (S.A.); (C.C.); (O.M.P.); (P.N.)
| | - Arianna Palladini
- Department of Molecular Medicine, University of Pavia, 27100 Pavia, Italy;
| | - Stefania Angelicola
- Department of Medical and Surgical Sciences (DIMEC) and Alma Mater Institute on Healthy Planet, University of Bologna, 40126 Bologna, Italy; (F.R.); (M.S.S.); (L.S.); (S.A.); (C.C.); (O.M.P.); (P.N.)
| | - Chiara Cappello
- Department of Medical and Surgical Sciences (DIMEC) and Alma Mater Institute on Healthy Planet, University of Bologna, 40126 Bologna, Italy; (F.R.); (M.S.S.); (L.S.); (S.A.); (C.C.); (O.M.P.); (P.N.)
| | - Olga Maria Pittino
- Department of Medical and Surgical Sciences (DIMEC) and Alma Mater Institute on Healthy Planet, University of Bologna, 40126 Bologna, Italy; (F.R.); (M.S.S.); (L.S.); (S.A.); (C.C.); (O.M.P.); (P.N.)
| | - Patrizia Nanni
- Department of Medical and Surgical Sciences (DIMEC) and Alma Mater Institute on Healthy Planet, University of Bologna, 40126 Bologna, Italy; (F.R.); (M.S.S.); (L.S.); (S.A.); (C.C.); (O.M.P.); (P.N.)
| | - Pier-Luigi Lollini
- Department of Medical and Surgical Sciences (DIMEC) and Alma Mater Institute on Healthy Planet, University of Bologna, 40126 Bologna, Italy; (F.R.); (M.S.S.); (L.S.); (S.A.); (C.C.); (O.M.P.); (P.N.)
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2
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Imon RR, Samad A, Alam R, Alsaiari AA, Talukder MEK, Almehmadi M, Ahammad F, Mohammad F. Computational formulation of a multiepitope vaccine unveils an exceptional prophylactic candidate against Merkel cell polyomavirus. Front Immunol 2023; 14:1160260. [PMID: 37441076 PMCID: PMC10333698 DOI: 10.3389/fimmu.2023.1160260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 05/30/2023] [Indexed: 07/15/2023] Open
Abstract
Merkel cell carcinoma (MCC) is a rare neuroendocrine skin malignancy caused by human Merkel cell polyomavirus (MCV), leading to the most aggressive skin cancer in humans. MCV has been identified in approximately 43%-100% of MCC cases, contributing to the highly aggressive nature of primary cutaneous carcinoma and leading to a notable mortality rate. Currently, no existing vaccines or drug candidates have shown efficacy in addressing the ailment caused by this specific pathogen. Therefore, this study aimed to design a novel multiepitope vaccine candidate against the virus using integrated immunoinformatics and vaccinomics approaches. Initially, the highest antigenic, immunogenic, and non-allergenic epitopes of cytotoxic T lymphocytes, helper T lymphocytes, and linear B lymphocytes corresponding to the virus whole protein sequences were identified and retrieved for vaccine construction. Subsequently, the selected epitopes were linked with appropriate linkers and added an adjuvant in front of the construct to enhance the immunogenicity of the vaccine candidates. Additionally, molecular docking and dynamics simulations identified strong and stable binding interactions between vaccine candidates and human Toll-like receptor 4. Furthermore, computer-aided immune simulation found the real-life-like immune response of vaccine candidates upon administration to the human body. Finally, codon optimization was conducted on the vaccine candidates to facilitate the in silico cloning of the vaccine into the pET28+(a) cloning vector. In conclusion, the vaccine candidate developed in this study is anticipated to augment the immune response in humans and effectively combat the virus. Nevertheless, it is imperative to conduct in vitro and in vivo assays to evaluate the efficacy of these vaccine candidates thoroughly. These evaluations will provide critical insights into the vaccine's effectiveness and potential for further development.
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Affiliation(s)
- Raihan Rahman Imon
- Laboratory of Computational Biology, Biological Solution Centre (BioSol Centre), Jashore, Bangladesh
- Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Abdus Samad
- Laboratory of Computational Biology, Biological Solution Centre (BioSol Centre), Jashore, Bangladesh
- Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Rahat Alam
- Laboratory of Computational Biology, Biological Solution Centre (BioSol Centre), Jashore, Bangladesh
- Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Ahad Amer Alsaiari
- Clinical Laboratories Science Department, College of Applied Medical Science, Taif University, Taif, Saudi Arabia
| | - Md. Enamul Kabir Talukder
- Laboratory of Computational Biology, Biological Solution Centre (BioSol Centre), Jashore, Bangladesh
- Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Mazen Almehmadi
- Clinical Laboratories Science Department, College of Applied Medical Science, Taif University, Taif, Saudi Arabia
| | - Foysal Ahammad
- Laboratory of Computational Biology, Biological Solution Centre (BioSol Centre), Jashore, Bangladesh
- Division of Biological and Biomedical Sciences (BBS), College of Health and Life Sciences (CHLS), Hamad Bin Khalifa University (HBKU), Doha, Qatar
| | - Farhan Mohammad
- Division of Biological and Biomedical Sciences (BBS), College of Health and Life Sciences (CHLS), Hamad Bin Khalifa University (HBKU), Doha, Qatar
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3
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Kim E, Lim EK, Park G, Park C, Lim JW, Lee H, Na W, Yeom M, Kim J, Song D, Haam S. Advanced Nanomaterials for Preparedness Against (Re-)Emerging Viral Diseases. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2005927. [PMID: 33586180 DOI: 10.1002/adma.202005927] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/08/2020] [Indexed: 05/24/2023]
Abstract
While the coronavirus disease (COVID-19) accounts for the current global pandemic, the emergence of other unknown pathogens, named "Disease X," remains a serious concern in the future. Emerging or re-emerging pathogens continue to pose significant challenges to global public health. In response, the scientific community has been urged to create advanced platform technologies to meet the ever-increasing needs presented by these devastating diseases with pandemic potential. This review aims to bring new insights to allow for the application of advanced nanomaterials in future diagnostics, vaccines, and antiviral therapies, thereby addressing the challenges associated with the current preparedness strategies in clinical settings against viruses. The application of nanomaterials has advanced medicine and provided cutting-edge solutions for unmet needs. Herein, an overview of the currently available nanotechnologies is presented, highlighting the significant features that enable them to control infectious diseases, and identifying the challenges that remain to be addressed for the commercial production of nano-based products is presented. Finally, to conclude, the development of a nanomaterial-based system using a "One Health" approach is suggested. This strategy would require a transdisciplinary collaboration and communication between all stakeholders throughout the entire process spanning across research and development, as well as the preclinical, clinical, and manufacturing phases.
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Affiliation(s)
- Eunjung Kim
- Department of Bioengineering and Nano-Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
- Division of Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Eun-Kyung Lim
- BioNanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
- Department of Nanobiotechnology, KRIBB School of Biotechnology, UST, Daejeon, 34113, Republic of Korea
| | - Geunseon Park
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seoul, 03722, Republic of Korea
| | - Chaewon Park
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seoul, 03722, Republic of Korea
| | - Jong-Woo Lim
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seoul, 03722, Republic of Korea
| | - Hyo Lee
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seoul, 03722, Republic of Korea
| | - Woonsung Na
- College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Minjoo Yeom
- College of Pharmacy, Korea University, Sejong-ro, Sejong, 30019, Republic of Korea
| | - Jinyoung Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seoul, 03722, Republic of Korea
| | - Daesub Song
- College of Pharmacy, Korea University, Sejong-ro, Sejong, 30019, Republic of Korea
| | - Seungjoo Haam
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seoul, 03722, Republic of Korea
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4
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Robinson SA, Hartman EC, Ikwuagwu BC, Francis MB, Tullman-Ercek D. Engineering a Virus-like Particle to Display Peptide Insertions Using an Apparent Fitness Landscape. Biomacromolecules 2020; 21:4194-4204. [PMID: 32880435 DOI: 10.1021/acs.biomac.0c00987] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Peptide insertions in the primary sequence of proteins expand functionality by introducing new binding sequences, chemical handles, or membrane disrupting motifs. With these properties, proteins can be engineered as scaffolds for vaccines or targeted drug delivery vehicles. Virus-like particles (VLPs) are promising platforms for these applications since they are genetically simple, mimic viral structure for cell uptake, and can deliver multiple copies of a therapeutic agent to a given cell. Peptide insertions in the coat protein of VLPs can increase VLP uptake in cells by increasing cell binding, but it is difficult to predict how an insertion affects monomer folding and higher order assembly. To this end, we have engineered the MS2 VLP using a high-throughput technique, called Systematic Mutagenesis and Assembled Particle Selection (SyMAPS). In this work, we applied SyMAPS to investigate a highly mutable loop in the MS2 coat protein to display 9,261 non-native tripeptide insertions. This library generates a discrete map of three amino acid insertions permitted at this location, validates the FG loop as a valuable position for peptide insertion, and illuminates how properties such as charge, flexibility, and hydrogen bonding can interact to preserve or disrupt capsid assembly. Taken together, the results highlight the potential to engineer VLPs in a systematic manner, paving the way to exploring the applications of peptide insertions in biomedically relevant settings.
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Affiliation(s)
- Stephanie A Robinson
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States.,Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological Institute E136, Evanston, Illinois 60208-3120, United States
| | - Emily C Hartman
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Bon C Ikwuagwu
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological Institute E136, Evanston, Illinois 60208-3120, United States
| | - Matthew B Francis
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratories, Berkeley, California 94720-1460, United States
| | - Danielle Tullman-Ercek
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological Institute E136, Evanston, Illinois 60208-3120, United States
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5
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Doering J, Czajka T, Yates JL, Donini O, Mantis NJ. Potency determination of ricin toxin using a monoclonal antibody-based competition assay. J Immunol Methods 2020; 486:112844. [PMID: 32891616 DOI: 10.1016/j.jim.2020.112844] [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: 05/13/2020] [Revised: 08/04/2020] [Accepted: 08/17/2020] [Indexed: 10/23/2022]
Abstract
Mouse challenge studies with death as an endpoint remain the gold standard in assessing the potency of ricin toxin, a Category B biothreat agent derived from the castor bean (Ricinus communis). However, animal studies are expensive, time consuming and ethically concerning. In an effort to reduce reliance on animals in vaccine development, we developed a monoclonal antibody (MAb)-based ricin competition ELISA (RiCoE) that indicates conformation integrity of ricin toxin. In forced degradation (heat-denaturation) experiments with native ricin holotoxin, we demonstrate a correlation between the decline in MAb reactivity in RiCoE and a corresponding loss of toxin potency in Vero cells (IC50) and mice (LD50). The RiCoE assay was applied to differentially sourced commercial lots of ricin toxin derived from R. communis blends and compared to toxin potency in mice. There was near perfect congruence between RiCoE values with two different MAbs (PB10, SyH7) and ricin potency in the mouse model using morbidity as an endpoint. In conclusion, we propose that RiCoE can serve as a rapid and sensitive substitute to mouse lethal dose challenge studies as a means to determine ricin toxin potency and will be valuable at various stages of vaccine development.
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Affiliation(s)
- Jennifer Doering
- Division of Infectious Disease, Wadsworth Center, New York State Department of Health, Albany, NY 12208, United States of America
| | - Timothy Czajka
- Department of Biomedical Sciences, University at Albany, Albany, NY 12201, United States of America
| | - Jennifer L Yates
- Division of Infectious Disease, Wadsworth Center, New York State Department of Health, Albany, NY 12208, United States of America
| | - Oreola Donini
- Soligenix, Inc., Princeton, NJ 08540, United States of America
| | - Nicholas J Mantis
- Division of Infectious Disease, Wadsworth Center, New York State Department of Health, Albany, NY 12208, United States of America; Department of Biomedical Sciences, University at Albany, Albany, NY 12201, United States of America.
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6
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Wang D, Liu X, Wei M, Qian C, Song S, Chen J, Wang Z, Xu Q, Yang Y, He M, Chi X, Huang S, Li T, Kong Z, Zheng Q, Yu H, Wang Y, Zhao Q, Zhang J, Xia N, Gu Y, Li S. Rational design of a multi-valent human papillomavirus vaccine by capsomere-hybrid co-assembly of virus-like particles. Nat Commun 2020; 11:2841. [PMID: 32503989 PMCID: PMC7275066 DOI: 10.1038/s41467-020-16639-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 05/17/2020] [Indexed: 12/22/2022] Open
Abstract
The capsid of human papillomavirus (HPV) spontaneously arranges into a T = 7 icosahedral particle with 72 L1 pentameric capsomeres associating via disulfide bonds between Cys175 and Cys428. Here, we design a capsomere-hybrid virus-like particle (chVLP) to accommodate multiple types of L1 pentamers by the reciprocal assembly of single C175A and C428A L1 mutants, either of which alone encumbers L1 pentamer particle self-assembly. We show that co-assembly between any pair of C175A and C428A mutants across at least nine HPV genotypes occurs at a preferred equal molar stoichiometry, irrespective of the type or number of L1 sequences. A nine-valent chVLP vaccine-formed through the structural clustering of HPV epitopes-confers neutralization titers that are comparable with that of Gardasil 9 and elicits minor cross-neutralizing antibodies against some heterologous HPV types. These findings may pave the way for a new vaccine design that targets multiple pathogenic variants or cancer cells bearing diverse neoantigens.
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Affiliation(s)
- Daning Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Xinlin Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Minxi Wei
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Ciying Qian
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Shuo Song
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Jie Chen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Zhiping Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Qin Xu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Yurou Yang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Maozhou He
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Xin Chi
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Shiwen Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Tingting Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Zhibo Kong
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Qingbing Zheng
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Hai Yu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Yingbin Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Qinjian Zhao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Jun Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China.,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China
| | - Ningshao Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China. .,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China.
| | - Ying Gu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China. .,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China.
| | - Shaowei Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, China. .,National Institute of Diagnostics and Vaccine Development in Infectious Disease, Xiamen University, 361102, Xiamen, China.
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7
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Virus-Like Particles as an Immunogenic Platform for Cancer Vaccines. Viruses 2020; 12:v12050488. [PMID: 32349216 PMCID: PMC7291217 DOI: 10.3390/v12050488] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/21/2020] [Accepted: 04/24/2020] [Indexed: 12/11/2022] Open
Abstract
Virus-like particles (VLP) spontaneously assemble from viral structural proteins. They are naturally biocompatible and non-infectious. VLP can serve as a platform for many potential vaccine epitopes, display them in a dense repeating array, and elicit antibodies against non-immunogenic substances, including tumor-associated self-antigens. Genetic or chemical conjugation facilitates the multivalent display of a homologous or heterologous epitope. Most VLP range in diameter from 25 to 100 nm and, in most cases, drain freely into the lymphatic vessels and induce antibodies with high titers and affinity without the need for additional adjuvants. VLP administration can be performed using different strategies, regimens, and doses to improve the immunogenicity of the antigen they expose on their surface. This article summarizes the features of VLP and presents them as a relevant platform technology to address not only infectious diseases but also chronic diseases and cancer.
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8
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Vaccination Against Amyloidogenic Aggregates in Pancreatic Islets Prevents Development of Type 2 Diabetes Mellitus. Vaccines (Basel) 2020; 8:vaccines8010116. [PMID: 32131431 PMCID: PMC7157615 DOI: 10.3390/vaccines8010116] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 02/25/2020] [Accepted: 02/26/2020] [Indexed: 12/23/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a chronic progressive disease characterized by insulin resistance and insufficient insulin secretion to maintain normoglycemia. The majority of T2DM patients bear amyloid deposits mainly composed of islet amyloid polypeptide (IAPP) in their pancreatic islets. These-originally β-cell secretory products-extracellular aggregates are cytotoxic for insulin-producing β-cells and are associated with β-cell loss and inflammation in T2DM advanced stages. Due to the absence of T2DM preventive medicaments and the presence of only symptomatic drugs acting towards increasing hormone secretion and action, we aimed at establishing a novel disease-modifying therapy targeting the cytotoxic IAPP deposits in order to prevent the development of T2DM. We generated a vaccine based on virus-like particles (VLPs), devoid of genomic material, coupled to IAPP peptides inducing specific antibodies against aggregated, but not monomeric IAPP. Using a mouse model of islet amyloidosis, we demonstrate in vivo that our vaccine induced a potent antibody response against aggregated, but not soluble IAPP, strikingly preventing IAPP depositions, delaying onset of hyperglycemia and the induction of the associated pro-inflammatory cytokine Interleukin 1β (IL-1β). We offer the first cost-effective and safe disease-modifying approach targeting islet dysfunction in T2DM, preventing pathogenic aggregates without disturbing physiological IAPP function.
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9
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Influence of cell-penetrating peptides on the activity and stability of virus-based nanoparticles. Int J Pharm 2020; 576:119008. [DOI: 10.1016/j.ijpharm.2019.119008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 12/23/2019] [Accepted: 12/29/2019] [Indexed: 02/06/2023]
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10
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He B, Zhang Z, Zhang X, Tang Z, Liu C, Zheng Z, Li S, Zhang J, Xia N, Zhao Q. Functional epitopes on hepatitis E virions and recombinant capsids are highly conformation-dependent. Hum Vaccin Immunother 2020; 16:1554-1564. [PMID: 31995442 DOI: 10.1080/21645515.2019.1703454] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Hepatitis E virus (HEV) is responsible for epidemic and sporadic acute hepatitis cases, especially in developing countries. Hepatitis E has become a vaccine-preventable disease in recent years with the development of a licensed vaccine. Most functional and neutralizing monoclonal antibodies (mAbs) are known to be highly sensitive to antigen conformation. In this study, a similar approach was used to characterize the conformational sensitivity of antibodies in human or mouse serum samples. Interestingly, comparative binding analysis using different antigen forms showed that the antibodies in the sera of naturally infected individuals, of human vaccinees and from mice immunized with the HEV p239 vaccine all exhibited a strong preference to particulate antigens over the monomeric form of the truncated capsid protein. The degree of discriminating the two test antigens is similar for serum samples to that for the well-characterized murine mAbs. A functional assay for assessing the inhibition of subviral particle cell entry by antibodies was used to determine the functional titers of anti-HEV antibodies in mouse sera. A good correlation was observed between the functional and binding titers in mouse sera determined using two different methods. This result supports the continued use of the enzyme-linked immunosorbent assay as the primary serological assay assuming that the coating antigen contains conformational and native-like epitopes, as in the case for HEV p239.
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Affiliation(s)
- Bin He
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University , Xiamen, Fujian, PR China
| | - Zhigang Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University , Xiamen, Fujian, PR China
| | - Xinyuan Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University , Xiamen, Fujian, PR China
| | - Zimin Tang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University , Xiamen, Fujian, PR China
| | - Chang Liu
- School of Life Science, Xiamen University , Xiamen, Fujian, PR China
| | - Zizheng Zheng
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University , Xiamen, Fujian, PR China
| | - Shaowei Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University , Xiamen, Fujian, PR China.,School of Life Science, Xiamen University , Xiamen, Fujian, PR China
| | - Jun Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University , Xiamen, Fujian, PR China
| | - Ningshao Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University , Xiamen, Fujian, PR China.,School of Life Science, Xiamen University , Xiamen, Fujian, PR China
| | - Qinjian Zhao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University , Xiamen, Fujian, PR China
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11
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Li Y, Huang X, Zhang Z, Li S, Zhang J, Xia N, Zhao Q. Prophylactic Hepatitis E Vaccines: Antigenic Analysis and Serological Evaluation. Viruses 2020; 12:v12010109. [PMID: 31963175 PMCID: PMC7020013 DOI: 10.3390/v12010109] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/10/2020] [Accepted: 01/13/2020] [Indexed: 12/13/2022] Open
Abstract
Hepatitis E virus (HEV) infection causes sporadic outbreaks of acute hepatitis worldwide. HEV was previously considered to be restricted to resource-limited countries with poor sanitary conditions, but increasing evidence implies that HEV is also a public health problem in developed countries and regions. Fortunately, several vaccine candidates based on virus-like particles (VLPs) have progressed into the clinical development stage, and one of them has been approved in China. This review provides an overview of the current HEV vaccine pipeline and future development with the emphasis on defining the critical quality attributes for the well-characterized vaccines. The presence of clinically relevant epitopes on the VLP surface is critical for eliciting functional antibodies against HEV infection, which is the key to the mechanism of action of the prophylactic vaccines against viral infections. Therefore, the epitope-specific immunochemical assays based on monoclonal antibodies (mAbs) for HEV vaccine antigen are critical methods in the toolbox for epitope characterization and for in vitro potency assessment. Moreover, serological evaluation methods after immunization are also discussed as biomarkers for clinical performance. The vaccine efficacy surrogate assays are critical in the preclinical and clinical stages of VLP-based vaccine development.
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Affiliation(s)
- Yike Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen 361102, Fujian, China; (Y.L.); (X.H.); (Z.Z.); (S.L.); (J.Z.); (N.X.)
| | - Xiaofen Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen 361102, Fujian, China; (Y.L.); (X.H.); (Z.Z.); (S.L.); (J.Z.); (N.X.)
| | - Zhigang Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen 361102, Fujian, China; (Y.L.); (X.H.); (Z.Z.); (S.L.); (J.Z.); (N.X.)
| | - Shaowei Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen 361102, Fujian, China; (Y.L.); (X.H.); (Z.Z.); (S.L.); (J.Z.); (N.X.)
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Sciences, Xiamen University, Xiamen 361102, Fujian, China
| | - Jun Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen 361102, Fujian, China; (Y.L.); (X.H.); (Z.Z.); (S.L.); (J.Z.); (N.X.)
| | - Ningshao Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen 361102, Fujian, China; (Y.L.); (X.H.); (Z.Z.); (S.L.); (J.Z.); (N.X.)
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Sciences, Xiamen University, Xiamen 361102, Fujian, China
| | - Qinjian Zhao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen 361102, Fujian, China; (Y.L.); (X.H.); (Z.Z.); (S.L.); (J.Z.); (N.X.)
- Correspondence: ; Tel.: +86-59-2218-0936
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12
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Zhou C, Lin X, Lu Y, Zhang J. Flexible on-demand cell-free protein synthesis platform based on a tube-in-tube reactor. REACT CHEM ENG 2020. [DOI: 10.1039/c9re00394k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A flexible on-demand cell-free protein synthesis platform using a tube-in-tube reactor is established for continuous synthesis of different protein drugs.
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Affiliation(s)
- Caijin Zhou
- The State Key Lab of Chemical Engineering
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Xiaomei Lin
- Key Lab of Industrial Biocatalysis
- Ministry of Education
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
| | - Yuan Lu
- Key Lab of Industrial Biocatalysis
- Ministry of Education
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
| | - Jisong Zhang
- The State Key Lab of Chemical Engineering
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- China
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13
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Lim SI. Site-specific bioconjugation and self-assembly technologies for multi-functional biologics: on the road to the clinic. Drug Discov Today 2019; 25:168-176. [PMID: 31610287 DOI: 10.1016/j.drudis.2019.10.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/28/2019] [Accepted: 10/03/2019] [Indexed: 01/02/2023]
Abstract
The expanding portfolio of biotherapeutics both in the research and development (R&D) and market sectors is shaping new opportunities towards multifunctional biologics (MFBs). The combination of new or pre-existing therapeutic agents into a single multifunctional format makes it possible to develop new pharmacological actions to significantly improve their efficacy and safety. In this review, I focus on novel platform technologies that are being exploited in the biotech industry to produce MFBs with potential therapeutic benefits that include half-life extension, targeted delivery, T cell engagement, and improved vaccination. In this regard, technologies of key importance are site-specific bioconjugation and self-assembly, which allow homogeneous, defined, and scalable process developments for several MFBs that are advancing towards clinical applications.
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Affiliation(s)
- Sung In Lim
- Department of Chemical Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, Republic of Korea.
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14
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Kumar R, Kumar P. Yeast-based vaccines: New perspective in vaccine development and application. FEMS Yeast Res 2019; 19:5298404. [PMID: 30668686 DOI: 10.1093/femsyr/foz007] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 01/18/2019] [Indexed: 12/11/2022] Open
Abstract
In presently licensed vaccines, killed or attenuated organisms act as a source of immunogens except for peptide-based vaccines. These conventional vaccines required a mass culture of associated or related organisms and long incubation periods. Special requirements during storage and transportation further adds to the cost of vaccine preparations. Availability of complete genome sequence, well-established genetic, inherent natural adjuvant and non-pathogenic nature of yeast species viz. Saccharomyces cerevisiae, Pichia pastoris makes them an ideal model system for the development of vaccines both for public health and for on-farm consumption. In this review, we compile the work in this emerging field during last two decades with major emphases on S. cerevisiae and P. pastoris which are routinely used worldwide for expression of heterologous proteins with therapeutic value against infectious diseases along with possible use in cancer therapy. We also pointed towards the developments in use of whole recombinant yeast, yeast surface display and virus-like particles as a novel strategy in the fight against infectious diseases and cancer along with other aspects including suitability of yeast in vaccines preparations, yeast cell wall component as an immune stimulator or modulator and present status of yeast-based vaccines in clinical trials.
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Affiliation(s)
- Ravinder Kumar
- Section of Molecular Biology, Division of Biological Sciences, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Piyush Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, Maharashtra, India
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15
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Recent trends and advances in microbe-based drug delivery systems. ACTA ACUST UNITED AC 2019; 27:799-809. [PMID: 31376116 DOI: 10.1007/s40199-019-00291-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 07/22/2019] [Indexed: 12/12/2022]
Abstract
Since more than a decade, pharmaceutical researchers endeavor to develop an effective, safe and target-specific drug delivery system to potentiate the therapeutic actions and reduce the side effects. The conventional drug delivery systems (DDSs) show the improvement in the lifestyle of the patients suffering from non-communicable diseases, autoimmune diseases but sometimes, drug resistance developed during the treatment is a major concern for clinicians to find an alternative and more advanced transport systems. Advancements in drug delivery facilitate the development of active carrier for targeted action with improved pharmacokinetic behavior. This review article focuses on microbe-based drug delivery systems to provide safe, non-toxic, site-specific targeted action with lesser side effects. Pharmaceutical researchers play a vital part in microbe-based drug delivery systems as a therapeutic agent and carrier. The properties of microorganisms like self-propulsion, in-situ production of therapeutics, penetration into the tumor cells, increase in immunity, etc. are of interest for development of highly effective delivery carrier. Lactococcus lactis is therapeutically helpful in Inflammatory Bowel Disease (IBD) and is under investigation of phase I clinical trial. Moreover, bacteria, anti-cancer oncolytic viruses, viral vectors (gene therapy) and viral immunotherapy are the attractive areas of biotechnological research. Virus acts as a distinctive candidate for imaging of tumor and accumulation of active in tumor. Graphical abstract Classification of microbe-based drug delivery system.
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16
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Kim HJ, Son HS, Lee SW, Yoon Y, Hyeon JY, Chung GT, Lee JW, Yoo JS. Efficient expression of enterovirus 71 based on virus-like particles vaccine. PLoS One 2019; 14:e0210477. [PMID: 30845175 PMCID: PMC6405078 DOI: 10.1371/journal.pone.0210477] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 12/25/2018] [Indexed: 01/23/2023] Open
Abstract
Enterovirus (EV) 71 is the main pathogen associated with hand-foot-mouth disease (HFMD) and can lead to the disease with severe mortality in children. Since 2009, in the Republic of Korea, an outbreak of EV71 C4a infection with neurologic involvement emerged, where in HFMD involvement was identified and central nervous system complications were reported. In this study, EV71 C4a virus-like particles (VLPs) produced by recombinant technology were generated in a baculovirus expression system. To improve the production yield, EV71 VLP was constructed using the dual promoter system baculovirus P1 and 3CD (baculo-P1-3CD), which harbored both the structural protein-encoding P1 region under the control of the polyhedron promoter and the 3CD protease gene under the regulation of the CMV-IE, lef3, gp41, or chitinase promoters to augment the level of gene transcription. Efficient VLP expression was demonstrated through optimization of incubation time and insect cell type. In addition, to evaluate the potential of VLP as a vaccine candidate, we tested the neutralizing antibodies and total anti-EV71 IgG from the purified EV71 C4a VLP serum. The recombinant EV71 VLP exhibited the morphology of self-assembled VLP, as determined by electron microscopy. Use of baculo-P1-3CD-gp41 led to a high yield (11.3mg/L < 40kDa) of VLPs in High-FiveTM cells at 3 days post-infection. Furthermore, the potential of VLP as a vaccine was evaluated through the neutralizing ability elicited by the purified EV71 VLP after immunization of BALB/c mice, which was shown to induce potent and long-lasting humoral immune responses as evidenced by the cross-neutralization titer. Our results could be used to expedite the developmental process for vaccines under clinical trials and to ensure manufacturing consistency for licensing requirements.
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Affiliation(s)
- Hye-Jin Kim
- Division of Vaccine Research, Center for Infectious Diseases, Korea National Institutes of Health, Korea Centers for Disease Control and Prevention, Osong-eup, Cheongju, Chungcheongbuk-do, Republic of Korea
| | - Ho Sun Son
- Division of Vaccine Research, Center for Infectious Diseases, Korea National Institutes of Health, Korea Centers for Disease Control and Prevention, Osong-eup, Cheongju, Chungcheongbuk-do, Republic of Korea
| | - Sang Won Lee
- Division of Strategic Planning for Emerging Infectious Disease, Centers for Disease Control and Prevention, Osong, CheongJu, Chungcheongbuk-do, South Korea
| | - Youngsil Yoon
- Division of Viral Disease, Center for Laboratory control of Infectious Disease, Centers for Disease Control and Prevention, Osong, CheongJu, Chungcheongbuk-do, South Korea
| | - Ji-Yeon Hyeon
- Division of Vaccine Research, Center for Infectious Diseases, Korea National Institutes of Health, Korea Centers for Disease Control and Prevention, Osong-eup, Cheongju, Chungcheongbuk-do, Republic of Korea
| | - Gyung Tae Chung
- Division of Strategic Planning for Emerging Infectious Disease, Centers for Disease Control and Prevention, Osong, CheongJu, Chungcheongbuk-do, South Korea
| | - June-Woo Lee
- Division of Vaccine Research, Center for Infectious Diseases, Korea National Institutes of Health, Korea Centers for Disease Control and Prevention, Osong-eup, Cheongju, Chungcheongbuk-do, Republic of Korea
- * E-mail: (JSY); (JWL)
| | - Jung Sik Yoo
- Division of Vaccine Research, Center for Infectious Diseases, Korea National Institutes of Health, Korea Centers for Disease Control and Prevention, Osong-eup, Cheongju, Chungcheongbuk-do, Republic of Korea
- * E-mail: (JSY); (JWL)
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17
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Multifaceted characterization of recombinant protein-based vaccines: An immunochemical toolbox for epitope-specific analyses of the hepatitis E vaccine. Vaccine 2018; 36:7650-7658. [PMID: 30396752 DOI: 10.1016/j.vaccine.2018.10.089] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 10/25/2018] [Accepted: 10/26/2018] [Indexed: 01/22/2023]
Abstract
The integrity of functional epitopes is a critical quality attribute for recombinant protein based vaccines since the presence of these native-like epitopes is the structural basis for vaccines to elicit functional antibodies. To demonstrate the quality and quantity of functional epitopes on vaccine antigens, a toolbox of assessing antigen characteristics is essential. Among the physicochemical, biophysical, immunochemical and in vivo potency analyses, the epitope-specific assays are most critical assessment of the antigen functionality. In this study, we used hepatitis E virus vaccine as an example to illustrated how the monoclonal antibody (mAb) based immunochemical assays were established for in-depth and multifaceted antigen characterization. A large panel of mAbs were developed and characterized using epitope clustering analysis. A subset of these mAbs recognizing non-overlapping epitopes were chosen to be used for assay development. Orthogonal methods, including surface plasma resonance-based BIAcore, solution competitive ELISA and sandwich ELISA, were developed for the antigenicity assessment. The sandwich ELISA with a pair of mAbs, recognizing two different epitopes, was used to assess the accelerated antigen stability, showing enhanced stability with adjuvant adsorption. Such a sandwich ELISA with robust performance has the potentials to be used for in vitro potency analysis to replace animal-based potency assay as product release test. In summary, using hepatitis E vaccine as an example, we demonstrated the importance and establishment of a mAb-based immunochemical toolbox for multifaceted antigen characterization. This is particularly important to demonstrate the successful reconstruction of the native-like and functional epitopes on a recombinant antigen post expression and purification. These epitope-specific and multifaceted assays serve as critical tools for process monitoring or lot consistency tests in support of vaccine development and manufacturing.
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18
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Zhang C, Huang X, Chen S, Li Y, Li Y, Wang X, Tang J, Xia L, Lin Z, Luo W, Li T, Li S, Zhang J, Xia N, Zhao Q. Epitope clustering analysis for vaccine-induced human antibodies in relationship to a panel of murine monoclonal antibodies against HPV16 viral capsid. Vaccine 2018; 36:6761-6771. [PMID: 30287156 DOI: 10.1016/j.vaccine.2018.09.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 09/08/2018] [Accepted: 09/13/2018] [Indexed: 02/06/2023]
Abstract
Human papillomavirus (HPV) type 16 is the most common type implicated as the etiological agent that causes cervical cancer. The marketed prophylactic vaccines against HPV infection are composed of virus-like particles (VLPs) assembled from the recombinant major capsid protein L1. Elicitation of functional and neutralizing antibodies by vaccination is the mode of action by which the vaccines prevent the viral infection. In this study, a panel of murine mAbs against HPV16 L1 were generated and comprehensively characterized with respect to their mapping to the epitope spectrum on the viral capsid. These mAbs were categorized into five epitope bins by two different methods based on the pairwise cross-inhibition and competition with human polyclonal antibodies. In addition, a preliminary demonstration of the spatial relationship of the epitopes recognized by these mAbs was performed using a cross-blocking assay with a well-characterized human mAb, 26D1. Interestingly, two mAbs recognizing different epitopes were found to act synergistically in the pseudovirion-based neutralization assay (PBNA). To facilitate cross-lab and cross-study comparison, the international standard (IS) serum 05/134 was used to calibrate the mAbs as well as the human serum samples from the HPV16/18 vaccine recipients. The neutralizing mAbs, particularly those that recognizing immunodominant epitopes, would be useful in developing epitope-specific assays for monitoring the vaccine production process and for serological assessment.
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Affiliation(s)
- Cai Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, PR China; School of Life Science, Xiamen University, Xiamen, Fujian, PR China
| | - Xiaofen Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, PR China; School of Public Health, Xiamen University, Xiamen, Fujian, PR China
| | - Siyi Chen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, PR China; School of Life Science, Xiamen University, Xiamen, Fujian, PR China
| | - Yike Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, PR China; School of Public Health, Xiamen University, Xiamen, Fujian, PR China
| | - Yufang Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, PR China; School of Public Health, Xiamen University, Xiamen, Fujian, PR China
| | - Xin Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, PR China; School of Public Health, Xiamen University, Xiamen, Fujian, PR China
| | - Jixian Tang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, PR China; School of Public Health, Xiamen University, Xiamen, Fujian, PR China
| | - Lin Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, PR China; School of Public Health, Xiamen University, Xiamen, Fujian, PR China
| | - Zhijie Lin
- Xiamen Innovax Biotech Company, Ltd, Xiamen, Fujian, PR China
| | - Wenxin Luo
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, PR China; School of Public Health, Xiamen University, Xiamen, Fujian, PR China
| | - Tingdong Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, PR China; School of Public Health, Xiamen University, Xiamen, Fujian, PR China
| | - Shaowei Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, PR China; School of Life Science, Xiamen University, Xiamen, Fujian, PR China; School of Public Health, Xiamen University, Xiamen, Fujian, PR China
| | - Jun Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, PR China; School of Public Health, Xiamen University, Xiamen, Fujian, PR China
| | - Ningshao Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, PR China; School of Life Science, Xiamen University, Xiamen, Fujian, PR China; School of Public Health, Xiamen University, Xiamen, Fujian, PR China.
| | - Qinjian Zhao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, PR China; School of Public Health, Xiamen University, Xiamen, Fujian, PR China.
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19
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Westfall J, Yates JL, Van Slyke G, Ehrbar D, Measey T, Straube R, Donini O, Mantis NJ. Thermal stability and epitope integrity of a lyophilized ricin toxin subunit vaccine. Vaccine 2018; 36:5967-5976. [PMID: 30172637 PMCID: PMC6320669 DOI: 10.1016/j.vaccine.2018.08.059] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 08/18/2018] [Accepted: 08/23/2018] [Indexed: 12/18/2022]
Abstract
Biodefense vaccine are destined to be stockpiled for periods of time and deployed in the event of a public health emergency. In this report, we compared the potency of liquid and lyophilized (thermostabilized) formulations of a candidate ricin toxin subunit vaccine, RiVax, adsorbed to aluminum salts adjuvant, over a 12-month period. The liquid and lyophilized formulations were stored at stressed (40 °C) and unstressed (4 °C) conditions and evaluated at 3, 6 and 12-month time points for potency in a mouse model of lethal dose ricin challenge. At the same time points, the vaccine formulations were interrogated in vitro by competition ELISA for conformational integrity using a panel of three monoclonal antibodies (mAbs), PB10, WECB2, and SyH7, directed against known immunodominant toxin-neutralizing epitopes on RiVax. We found that the liquid vaccine under stress conditions declined precipitously within the first three months, as evidenced by a reduction in in vivo potency and concomitant loss of mAb recognition in vitro. In contrast, the lyophilized RiVax vaccine retained in vivo potency and conformational integrity for up to one year at 4 °C and 40 °C. We discuss the utility of monitoring the integrity of one or more toxin-neutralizing epitopes on RiVax as a possible supplement to animal studies to assess vaccine potency.
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Affiliation(s)
- Jennifer Westfall
- Division of Infectious Disease, Wadsworth Center, New York State Department of Health, Albany, NY 12208, United States
| | - Jennifer L Yates
- Division of Infectious Disease, Wadsworth Center, New York State Department of Health, Albany, NY 12208, United States
| | - Greta Van Slyke
- Division of Infectious Disease, Wadsworth Center, New York State Department of Health, Albany, NY 12208, United States
| | - Dylan Ehrbar
- Division of Infectious Disease, Wadsworth Center, New York State Department of Health, Albany, NY 12208, United States
| | | | | | | | - Nicholas J Mantis
- Division of Infectious Disease, Wadsworth Center, New York State Department of Health, Albany, NY 12208, United States.
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Abstract
Compared with biologics, vaccine potency assays represent a special challenge due to their unique compositions, multivalency, long life cycles and global distribution. Historically, vaccines were released using in vivo potency assays requiring immunization of dozens of animals. Modern vaccines use a variety of newer analytical tools including biochemical, cell-based and immunochemical methods to measure potency. The choice of analytics largely depends on the mechanism of action and ability to ensure lot-to-lot consistency. Live vaccines often require cell-based assays to ensure infectivity, whereas recombinant vaccine potency can be reliably monitored with immunoassays. Several case studies are presented to demonstrate the relationship between mechanism of action and potency assay. A high-level decision tree is presented to assist with assay selection.
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21
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Han JY, Song JM, Seo SH, Wang C, Lee SG, Lee H, Kim SW, Choi ES. Ty1-fused protein-body formation for spatial organization of metabolic pathways inSaccharomyces cerevisiae. Biotechnol Bioeng 2017; 115:694-704. [DOI: 10.1002/bit.26493] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 10/16/2017] [Accepted: 11/06/2017] [Indexed: 12/25/2022]
Affiliation(s)
- Jong Yun Han
- Biotechnology Process Engineering Center; Korea Research Institute of Bioscience and Biotechnology (KRIBB); Cheongju Republic of Korea
- Department of Bioprocess Engineering; KRIBB School of Biotechnology; Korea University of Science and Technology (UST); Daejeon Republic of Korea
| | - Jae Myeong Song
- Biotechnology Process Engineering Center; Korea Research Institute of Bioscience and Biotechnology (KRIBB); Cheongju Republic of Korea
- Department of Bioprocess Engineering; KRIBB School of Biotechnology; Korea University of Science and Technology (UST); Daejeon Republic of Korea
| | - Sung Hwa Seo
- Biotechnology Process Engineering Center; Korea Research Institute of Bioscience and Biotechnology (KRIBB); Cheongju Republic of Korea
| | - Chonglong Wang
- School of Biology and Basic Medical Sciences; Soochow University; Suzhou P.R. China
| | - Seung-Goo Lee
- Industrial Biotechnology and Bioenergy Research Center; Korea Research Institute of Bioscience and Biotechnology (KRIBB); Daejeon Republic of Korea
| | - Hongweon Lee
- Biotechnology Process Engineering Center; Korea Research Institute of Bioscience and Biotechnology (KRIBB); Cheongju Republic of Korea
- Department of Bioprocess Engineering; KRIBB School of Biotechnology; Korea University of Science and Technology (UST); Daejeon Republic of Korea
| | - Seon-Won Kim
- Division of Applied Life Science (BK21 Plus); PMBBRC; Gyeongsang National University; Jinju Republic of Korea
| | - Eui-Sung Choi
- Biotechnology Process Engineering Center; Korea Research Institute of Bioscience and Biotechnology (KRIBB); Cheongju Republic of Korea
- Department of Bioprocess Engineering; KRIBB School of Biotechnology; Korea University of Science and Technology (UST); Daejeon Republic of Korea
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Behloul N, Wei W, Baha S, Liu Z, Wen J, Meng J. Effects of mRNA secondary structure on the expression of HEV ORF2 proteins in Escherichia coli. Microb Cell Fact 2017; 16:200. [PMID: 29137642 PMCID: PMC5686824 DOI: 10.1186/s12934-017-0812-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 11/06/2017] [Indexed: 12/21/2022] Open
Abstract
Background Viral protein expression in Escherichia coli (E. coli) is a powerful tool for structural/functional studies as well as for vaccine and diagnostics development. However, numerous factors such as codon bias, mRNA secondary structure and nucleotides distribution, have been indentified to hamper this heterologous expression. Results In this study, we combined computational and biochemical methods to analyze the influence of these factors on the expression of different segments of hepatitis E virus (HEV) ORF 2 protein and hepatitis B virus surface antigen (HBsAg). Three out of five HEV antigens were expressed while all three HBsAg fragments were not. The computational analysis revealed a significant difference in nucleotide distribution between expressed and non-expressed genes; and all these non-expressing constructs shared similar stable 5′-end mRNA secondary structures that affected the accessibility of both Shine-Dalgarno (SD) sequence and start codon AUG. By modifying the 5′-end of HEV and HBV non-expressed genes, there was a significant increase in the total free energy of the mRNA secondary structures that permitted the exposure of the SD sequence and the start codon, which in turn, led to the successful expression of these genes in E. coli. Conclusions This study demonstrates that the mRNA secondary structure near the start codon is the key limiting factor for an efficient expression of HEV ORF2 proteins in E. coli. It describes also a simple and effective strategy for the production of viral proteins of different lengths for immunogenicity/antigenicity comparative studies during vaccine and diagnostics development. Electronic supplementary material The online version of this article (10.1186/s12934-017-0812-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nouredine Behloul
- Department of Microbiology and Immunology, School of Medicine, Southeast University, 87 DingJiaQiao Road, Nanjing, 210009, Jiangsu, China
| | - Wenjuan Wei
- Department of Microbiology and Immunology, School of Medicine, Southeast University, 87 DingJiaQiao Road, Nanjing, 210009, Jiangsu, China
| | - Sarra Baha
- Department of Microbiology and Immunology, School of Medicine, Southeast University, 87 DingJiaQiao Road, Nanjing, 210009, Jiangsu, China
| | - Zhenzhen Liu
- Department of Microbiology and Immunology, School of Medicine, Southeast University, 87 DingJiaQiao Road, Nanjing, 210009, Jiangsu, China
| | - Jiyue Wen
- Department of Pharmacology, Anhui Medical University, Hefei, 230032, China
| | - Jihong Meng
- Department of Microbiology and Immunology, School of Medicine, Southeast University, 87 DingJiaQiao Road, Nanjing, 210009, Jiangsu, China.
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23
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Changotra H, Vij A. Rotavirus virus-like particles (RV-VLPs) vaccines: An update. Rev Med Virol 2017; 27. [DOI: 10.1002/rmv.1954] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 09/17/2017] [Accepted: 09/18/2017] [Indexed: 01/24/2023]
Affiliation(s)
- Harish Changotra
- Department of Biotechnology and Bioinformatics; Jaypee University of Information Technology; Solan Himachal Pradesh India
| | - Avni Vij
- Department of Biotechnology and Bioinformatics; Jaypee University of Information Technology; Solan Himachal Pradesh India
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24
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Lee PW, Shukla S, Wallat JD, Danda C, Steinmetz NF, Maia J, Pokorski JK. Biodegradable Viral Nanoparticle/Polymer Implants Prepared via Melt-Processing. ACS NANO 2017; 11:8777-8789. [PMID: 28902491 PMCID: PMC5765982 DOI: 10.1021/acsnano.7b02786] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Viral nanoparticles have been utilized as a platform for vaccine development and are a versatile system for the display of antigenic epitopes for a variety of disease states. However, the induction of a clinically relevant immune response often requires multiple injections over an extended period of time, limiting patient compliance. Polymeric systems to deliver proteinaceous materials have been extensively researched to provide sustained release, which would limit administration to a single dose. Melt-processing is an emerging manufacturing method that has been utilized to create polymeric materials laden with proteins as an alternative to typical solvent-based production methods. Melt-processing is advantageous because it is continuous, solvent-free, and 100% of the therapeutic protein is encapsulated. In this study, we utilized melt-encapsulation to fabricate viral nanoparticle laden polymeric materials that effectively deliver intact particles and generate carrier specific antibodies in vivo. The effects of initial processing and postprocessing on particle integrity and aggregation were studied to develop processing windows for scale-up and the creation of more complex materials. The dispersion of particles within the PLGA matrix was studied, and the effect of additives and loading level on the release profile was determined. Overall, melt-encapsulation was found to be an effective method to produce composite materials that can deliver viral nanoparticles over an extended period and elicit an immune response comparable to typical administration schedules.
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Affiliation(s)
- Parker W. Lee
- Department of Macromolecular Science and Engineering, Case School of Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Sourabh Shukla
- Department of Biomedical Engineering, Case School of Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Jaqueline D. Wallat
- Department of Macromolecular Science and Engineering, Case School of Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Chaitanya Danda
- Department of Macromolecular Science and Engineering, Case School of Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Nicole F. Steinmetz
- School of Medicine, Division of General Medical Sciences-Oncology, Case Western Reserve University, Cleveland, Ohio 44106, United States
- Case Comprehensive Cancer Center, Division of General Medical Sciences-Oncology, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Joao Maia
- Department of Macromolecular Science and Engineering, Case School of Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Jonathan K. Pokorski
- Department of Macromolecular Science and Engineering, Case School of Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
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25
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Huang X, Wang X, Zhang J, Xia N, Zhao Q. Escherichia coli-derived virus-like particles in vaccine development. NPJ Vaccines 2017; 2:3. [PMID: 29263864 PMCID: PMC5627247 DOI: 10.1038/s41541-017-0006-8] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 01/10/2017] [Accepted: 01/17/2017] [Indexed: 12/19/2022] Open
Abstract
Recombinant virus-like particle-based vaccines are composed of viral structural proteins and mimic authentic native viruses but are devoid of viral genetic materials. They are the active components in highly safe and effective vaccines for the prevention of infectious diseases. Several expression systems have been used for virus-like particle production, ranging from Escherichia coli to mammalian cell lines. The prokaryotic expression system, especially Escherichia coli, is the preferred expression host for producing vaccines for global use. Hecolin, the first licensed virus-like particle vaccine derived from Escherichia coli, has been demonstrated to possess good safety and high efficacy. In this review, we focus on Escherichia coli-derived virus-like particle based vaccines and vaccine candidates that are used for prevention (immunization against microbial pathogens) or disease treatment (directed against cancer or non-infectious diseases). The native-like spatial or higher-order structure is essential for the function of virus-like particles. Thus, the tool box for analyzing the key physicochemical, biochemical and functional attributes of purified virus-like particles will also be discussed. In summary, the Escherichia coli expression system has great potentials for producing a range of proteins with self-assembling properties to be used as vaccine antigens given the proper epitopes were preserved when compared to those in the native pathogens or disease-related target molecules.
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Affiliation(s)
- Xiaofen Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian 361102 PR China.,School of Public Health, Xiamen University, Xiamen, Fujian 361102 PR China
| | - Xin Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian 361102 PR China.,School of Public Health, Xiamen University, Xiamen, Fujian 361102 PR China
| | - Jun Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian 361102 PR China.,School of Public Health, Xiamen University, Xiamen, Fujian 361102 PR China
| | - Ningshao Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian 361102 PR China.,School of Public Health, Xiamen University, Xiamen, Fujian 361102 PR China.,School of Life Science, Xiamen University, Xiamen, Fujian 361102 PR China
| | - Qinjian Zhao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian 361102 PR China.,School of Public Health, Xiamen University, Xiamen, Fujian 361102 PR China
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26
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Bissett SL, Godi A, Beddows S. The DE and FG loops of the HPV major capsid protein contribute to the epitopes of vaccine-induced cross-neutralising antibodies. Sci Rep 2016; 6:39730. [PMID: 28004837 PMCID: PMC5177933 DOI: 10.1038/srep39730] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 11/28/2016] [Indexed: 01/05/2023] Open
Abstract
The human papillomavirus (HPV) vaccines consist of major capsid protein (L1) virus-like particles (VLP) and are highly efficacious against the development of cervical cancer precursors attributable to oncogenic genotypes, HPV16 and HPV18. A degree of vaccine-induced cross-protection has also been demonstrated against genetically-related genotypes in the Alpha-7 (HPV18-like) and Alpha-9 (HPV16-like) species groups which is coincident with the detection of L1 cross-neutralising antibodies. In this study the L1 domains recognised by inter-genotype cross-neutralising antibodies were delineated. L1 crystallographic homology models predicted a degree of structural diversity between the L1 loops of HPV16 and the non-vaccine Alpha-9 genotypes. These structural predictions informed the design of chimeric pseudovirions with inter-genotype loop swaps which demonstrated that the L1 domains recognised by inter-genotype cross-neutralising antibodies comprise residues within the DE loop and the late region of the FG loop. These data contribute to our understanding of the L1 domains recognised by vaccine-induced cross-neutralising antibodies. Such specificities may play a critical role in vaccine-induced cross-protection.
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Affiliation(s)
- Sara L Bissett
- Virus Reference Department, Public Health England, London, UK
| | - Anna Godi
- Virus Reference Department, Public Health England, London, UK
| | - Simon Beddows
- Virus Reference Department, Public Health England, London, UK
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27
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Tekewe A, Fan Y, Tan E, Middelberg APJ, Lua LHL. Integrated molecular and bioprocess engineering for bacterially produced immunogenic modular virus-like particle vaccine displaying 18 kDa rotavirus antigen. Biotechnol Bioeng 2016; 114:397-406. [PMID: 27497268 DOI: 10.1002/bit.26068] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Revised: 07/04/2016] [Accepted: 08/02/2016] [Indexed: 01/04/2023]
Abstract
A high global burden of rotavirus disease and the unresolved challenges with the marketed rotavirus vaccines, particularly in the developing world, have ignited efforts to develop virus-like particle (VLP) vaccines for rotavirus. While rotavirus-like particles comprising multiple viral proteins can be difficult to process, modular VLPs presenting rotavirus antigenic modules are promising alternatives in reducing process complexity and cost. In this study, integrated molecular and bioprocess engineering approaches were used to simplify the production of modular murine polyomavirus capsomeres and VLPs presenting a rotavirus 18 kDa VP8* antigen. A single construct was generated for dual expression of non-tagged murine polyomavirus capsid protein VP1 and modular VP1 inserted with VP8*, for co-expression in Escherichia coli. Co-expressed proteins assembled into pentameric capsomeres in E. coli. A selective salting-out precipitation and a polishing size exclusion chromatography step allowed the recovery of stable modular capsomeres from cell lysates at high purity, and modular capsomeres were successfully translated into modular VLPs when assembled in vitro. Immunogenicity study in mice showed that modular capsomeres and VLPs induced high levels of VP8*-specific antibodies. Our results demonstrate that a multipronged synthetic biology approach combining molecular and bioprocess engineering enabled simple and low-cost production of highly immunogenic modular capsomeres and VLPs presenting conformational VP8* antigenic modules. This strategy potentially provides a cost-effective production route for modular capsomere and VLP vaccines against rotavirus, highly suitable to manufacturing economics for the developing world. Biotechnol. Bioeng. 2017;114: 397-406. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Alemu Tekewe
- Australian Institute for Bioengineering and Nanotechnoloy, The University of Queensland, St Lucia, Queensland, Australia
| | - Yuanyuan Fan
- Protein Expression Facility, The University of Queensland, St Lucia, Queensland, 4072, Australia
| | - Emilyn Tan
- Protein Expression Facility, The University of Queensland, St Lucia, Queensland, 4072, Australia
| | - Anton P J Middelberg
- Australian Institute for Bioengineering and Nanotechnoloy, The University of Queensland, St Lucia, Queensland, Australia
| | - Linda H L Lua
- Protein Expression Facility, The University of Queensland, St Lucia, Queensland, 4072, Australia
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28
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Lee GJ, Quan FS. Protection induced by early stage vaccination with pandemic influenza virus-like particles. Vaccine 2016; 34:3764-72. [PMID: 27317263 DOI: 10.1016/j.vaccine.2016.06.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 05/30/2016] [Accepted: 06/01/2016] [Indexed: 11/29/2022]
Abstract
The 2009 worldwide influenza pandemic emphasized the need for new approaches to develop emergency vaccines. In this study, a virus-like particle vaccine comprised of hemagglutinin (HA) and M1 from the pandemic influenza virus A/California/04/09 were used and its ability to induce protective immunity during the early stage of vaccination was assessed in a mouse model. A single intramuscular vaccination with virus-like particles (VLPs) provided protection on days 4 and 7 post-vaccination against lethal virus challenge with only moderate body weight loss. VLP vaccination induced significantly higher IgG antibody responses and high hemagglutinin inhibition (HAI) titers on day 4 post-vaccination. A predominant IgG2a antibody response and viral neutralizing antibodies were induced on day 7. These immune responses were closely correlated with protection. Lung virus titers decreased significantly on day 7 compared to those on day 4 post-vaccination. The lung virus titer on day 4 post-vaccination also decreased significantly compared to that of the naïve control. These results demonstrate that VLP vaccination confers effective protection during the early stage after vaccination in a mouse model.
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Affiliation(s)
- Gi-Ja Lee
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Fu-Shi Quan
- Department of Medical Zoology, Kyung Hee University School of Medicine, Seoul, Republic of Korea.
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29
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Li M, Wang X, Cao L, Lin Z, Wei M, Fang M, Li S, Zhang J, Xia N, Zhao Q. Quantitative and epitope-specific antigenicity analysis of the human papillomavirus 6 capsid protein in aqueous solution or when adsorbed on particulate adjuvants. Vaccine 2016; 34:4422-8. [PMID: 27426626 DOI: 10.1016/j.vaccine.2016.07.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 07/03/2016] [Accepted: 07/08/2016] [Indexed: 12/16/2022]
Abstract
Human papillomavirus (HPV) 6 is a human pathogen which causes genital warts. Recombinant virus-like particle (VLP) based antigens are the active components in prophylactic vaccines to elicit functional antibodies. The binding and functional characteristics of a panel of 15 murine monoclonal antibodies (mAbs) against HPV6 was quantitatively assessed. Elite conformational indicators, recognizing the conformational epitopes, are also elite viral neutralizers as demonstrated with their viral neutralization efficiency (5 mAbs with neutralization titer below 4ng/mL) in a pseudovirion (PsV)-based system. The functionality of a given mAb is closely related to the nature of the corresponding epitope, rather than the apparent binding affinity to antigen. The epitope-specific antigenicity assays can be used to assess the binding activity of PsV or VLP preparations to neutralizing mAbs. These mAb-based assays can be used for process monitoring and for product release and characterization to confirm the existence of functional epitopes in purified antigen preparations. Due to the particulate nature of the alum adjuvants, the vaccine antigen adsorbed on adjuvants was considered largely as "a black box" due to the difficulty in analysis and visualization. Here, a novel method with fluorescence-based high content imaging for visualization and quantitating the immunoreactivity of adjuvant-adsorbed VLPs with neutralizing mAbs was developed, in which antigen desorption was not needed. The facile and quantitative in situ antigenicity analysis was amendable for automation. The integrity of a given epitope or two non-overlapping epitopes on the recombinant VLPs in their adjuvanted form can be assessed in a quantitative manner for cross-lot or cross-product comparative analysis with minimal manipulation of samples.
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Affiliation(s)
- Min Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian 361005, PR China; School of Public Health, Xiamen University, Xiamen, Fujian 361005, PR China.
| | - Xin Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian 361005, PR China; School of Public Health, Xiamen University, Xiamen, Fujian 361005, PR China.
| | - Lu Cao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian 361005, PR China; School of Public Health, Xiamen University, Xiamen, Fujian 361005, PR China.
| | - Zhijie Lin
- Innovax Corporation, Xiamen, Fujian 361000, PR China.
| | - Minxi Wei
- Innovax Corporation, Xiamen, Fujian 361000, PR China.
| | - Mujin Fang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian 361005, PR China; School of Public Health, Xiamen University, Xiamen, Fujian 361005, PR China; School of Life Science, Xiamen University, Xiamen, Fujian 361005, PR China.
| | - Shaowei Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian 361005, PR China; School of Public Health, Xiamen University, Xiamen, Fujian 361005, PR China; School of Life Science, Xiamen University, Xiamen, Fujian 361005, PR China.
| | - Jun Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian 361005, PR China; School of Public Health, Xiamen University, Xiamen, Fujian 361005, PR China; School of Life Science, Xiamen University, Xiamen, Fujian 361005, PR China.
| | - Ningshao Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian 361005, PR China; School of Public Health, Xiamen University, Xiamen, Fujian 361005, PR China; School of Life Science, Xiamen University, Xiamen, Fujian 361005, PR China.
| | - Qinjian Zhao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian 361005, PR China; School of Public Health, Xiamen University, Xiamen, Fujian 361005, PR China.
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30
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Joshi SS, Arankalle VA. Differential Immune Responses in Mice Immunized with Recombinant Neutralizing Epitope Protein of Hepatitis E Virus Formulated with Liposome and Alum Adjuvants. Viral Immunol 2016; 29:350-60. [PMID: 27285290 DOI: 10.1089/vim.2016.0024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
In the developing countries, Hepatitis E virus (HEV) is a predominant cause of sporadic acute hepatitis in adults and waterborne epidemics leading to high mortality in pregnant women. Vaccine development mainly focuses on the structural capsid protein open-reading-frame-2 (ORF-2) of the virus. We successfully evaluated liposome-adjuvanted recombinant neutralizing epitope protein (rNEp), a part of ORF-2, 458-607aa, in mice and rhesus macaques. We compared immune response to adjuvants alone, rNEp alone, or adjuvanted with liposome (lipo-rNEp)/alum (al-rNEp) in mice following intramuscular administration of two doses of 5 μg each. IgG anti-HEV titers (enzyme-linked immunosorbent assay), immunophenotyping (flow cytometry, CD3(+)CD4(+), CD3(+)CD8(+), CD11c(+), CD11b(+), CD19(+) cells; costimulatory markers CD80, CD86, MHC-I, MHC-II, and early activation marker CD69), and levels of Th1/Th2 cytokines (IL-2/IFN-γ/IL-4/IL-5 and additionally IL-1β/IL-6/IL-10/TNF for early time points) were determined at early (4/12/24-h postdose-1) and later time points (2 weeks post-both doses). IgG anti-HEV titers were higher in the lipo-rNEp group than al-rNEp post-both doses (p < 0.05). At early time points, cell type proportions were comparable at the site of injection; IL-Iβ levels increased in lipo-rNEp, 24 h, while IL-6 levels rose in lipo-rNEp/al-rNEp/alum-alone groups, 4 h, compared to controls. In the draining lymph nodes (DLNs), CD11c(+)CD86(+) cells increased at 24 h in liposome-alone/lipo-rNEp groups. A rise in the CD11c(+)CD69(+) cells was noted in the lipo-rNEp group compared to other groups (p < 0.05). Cytokine levels in the spleen/sera remained unchanged in all the groups (p > 0.05). At 2 weeks postdose-2, CD11c(+)MHC-II(+)/CD11b(+)MHC-II(+) cells increased in the spleen in the lipo-rNEp and al-rNEp groups, respectively. In the DLNs, CD19(+)MHC-II(+) cells increased in rNEp/al-rNEp/lipo-rNEp groups post-both doses and CD11c(+)CD86(+) cells in the lipo-rNEp group. A balanced Th1/Th2 response was evident in the lipo-rNEp, while a Th2 bias was noted in al-rNEp. Different immune response gene clustering patterns were noted in uncultured spleens from immunized mice and cultured-stimulated splenocytes. In conclusion, lipo-rNEp is a better immunogen, works through dendritic cells, and elicits a balanced Th1/Th2 response, while alum functions through macrophages and induces a Th2 response.
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Wu X, Chen P, Lin H, Hao X, Liang Z. Hepatitis E virus: Current epidemiology and vaccine. Hum Vaccin Immunother 2016; 12:2603-2610. [PMID: 27184971 DOI: 10.1080/21645515.2016.1184806] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Hepatitis E virus infections have been continuously reported in Indian subcontinent, Africa, southeast and central Asia, posing great health threats to the public, especially to pregnant women. Hecolin® is the only licensed HEV vaccine developed by Xiamen Innovax Biotech Co., Ltd. Extensive characterizations on antigenicity, physicochemical properties, efficacy in clinical trials, and manufacturing capability have made Hecolin® a promising vaccine for HEV control. However, there are many obstacles in large scale application of Hecolin®. Efforts are needed to further evaluate safety and efficacy in HEV risk populations, and to complement HEV standards for quality control. Passing World Health Organization prequalification and licensing outside China are priorities as these are also hindering Hecolin® promotion. Multilateral cooperation among Chinese vaccine manufacturers, Chinese National Regulatory Authorization (NRA) and WHO will expedite the entrance of Hecolin® into international market, so that Hecolin® could play its due role in global hepatitis E control.
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Affiliation(s)
- Xing Wu
- a National Institutes for Food and Drug Control , Beijing , PR China
| | - Pan Chen
- a National Institutes for Food and Drug Control , Beijing , PR China
| | - Huijuan Lin
- b R&D Department , Shanghai Institute of Biological Products Co., Ltd. , Shanghai , PR China
| | - Xiaotian Hao
- a National Institutes for Food and Drug Control , Beijing , PR China
| | - Zhenglun Liang
- a National Institutes for Food and Drug Control , Beijing , PR China
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32
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Wang X, Li M, Li S, Wu T, Zhang J, Xia N, Zhao Q. Prophylaxis against hepatitis E: at risk populations and human vaccines. Expert Rev Vaccines 2016; 15:815-27. [PMID: 26775537 DOI: 10.1586/14760584.2016.1143365] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hepatitis E is an emerging global disease caused by hepatitis E virus (HEV) infection. While in developing countries the infection was primarily due to poor sanitary conditions through intake of contaminated water or undercooked meats of infected animals, increasing cases of chronic hepatitis E resulting in rapidly progressive liver cirrhosis and end-stage liver disease have been reported in organ transplant patients or in immune compromised patients in developed countries. Fortunately, hepatitis E is now a vaccine preventable disease with a HEV239 based vaccine licensed for human use. Much work is needed to enable its use outside China. This review recounted the development process of the vaccine, outlined the critical quality attributes of the vaccine antigen and, most importantly, listed the populations at risk for HEV infection and the subsequent disease. These at risk populations could benefit the most from the vaccination if the vaccine is widely adopted.
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Affiliation(s)
- Xin Wang
- a State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases , Xiamen University , Xiamen , PR China.,b School of Public Health , Xiamen University , Xiamen , PR China
| | - Min Li
- a State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases , Xiamen University , Xiamen , PR China.,b School of Public Health , Xiamen University , Xiamen , PR China
| | - Shaowei Li
- a State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases , Xiamen University , Xiamen , PR China.,b School of Public Health , Xiamen University , Xiamen , PR China.,c School of Life Science , Xiamen University , Xiamen , PR China
| | - Ting Wu
- a State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases , Xiamen University , Xiamen , PR China.,b School of Public Health , Xiamen University , Xiamen , PR China.,c School of Life Science , Xiamen University , Xiamen , PR China
| | - Jun Zhang
- a State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases , Xiamen University , Xiamen , PR China.,b School of Public Health , Xiamen University , Xiamen , PR China.,c School of Life Science , Xiamen University , Xiamen , PR China
| | - Ningshao Xia
- a State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases , Xiamen University , Xiamen , PR China.,b School of Public Health , Xiamen University , Xiamen , PR China.,c School of Life Science , Xiamen University , Xiamen , PR China
| | - Qinjian Zhao
- a State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases , Xiamen University , Xiamen , PR China.,b School of Public Health , Xiamen University , Xiamen , PR China
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33
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Xia L, Xian Y, Wang D, Chen Y, Huang X, Bi X, Yu H, Fu Z, Liu X, Li S, An Z, Luo W, Zhao Q, Xia N. A human monoclonal antibody against HPV16 recognizes an immunodominant and neutralizing epitope partially overlapping with that of H16.V5. Sci Rep 2016; 6:19042. [PMID: 26750243 PMCID: PMC4707464 DOI: 10.1038/srep19042] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 12/03/2015] [Indexed: 11/13/2022] Open
Abstract
The presence of neutralizing epitopes in human papillomavirus (HPV) L1 virus-like particles (VLPs) is the structural basis of prophylactic vaccines. An anti-HPV16 neutralizing monoclonal antibody (N-mAb) 26D1 was isolated from a memory B cell of a human vaccinee. The pre-binding of heparan sulfate to VLPs inhibited the binding of both N-mAbs to the antigen, indicating that the epitopes are critical for viral cell attachment/entry. Hybrid VLP binding with surface loop swapping between types indicated the essential roles of the DE and FG loops for both 26D1 (DEa in particular) and H16.V5 binding. Specifically, Tyr(135) and Val(141) on the DEa loop were shown to be critical residues for 26D1 binding via site-directed mutagenesis. Partially overlap between the epitopes between 26D1 and H16.V5 was shown using pairwise epitope mapping, and their binding difference is demonstrated to be predominantly in DE loop region. In addition, 26D1 epitope is immunodominant epitope recognized by both antibodies elicited by the authentic virus from infected individuals and polyclonal antibodies from vaccinees. Overall, a partially overlapping but distinct neutralizing epitope from that of H16.V5 was identified using a human N-mAb, shedding lights to the antibody arrays as part of human immune response to vaccination and infection.
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Affiliation(s)
- Lin Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Science, Xiamen University; Xiamen 361105, China
| | - Yangfei Xian
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Science, Xiamen University; Xiamen 361105, China
| | - Daning Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Science, Xiamen University; Xiamen 361105, China
| | - Yuanzhi Chen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Science, Xiamen University; Xiamen 361105, China
| | - Xiaofen Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Science, Xiamen University; Xiamen 361105, China
| | - Xingjian Bi
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Science, Xiamen University; Xiamen 361105, China
| | - Hai Yu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Science, Xiamen University; Xiamen 361105, China
| | - Zheng Fu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Science, Xiamen University; Xiamen 361105, China
| | - Xinlin Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Science, Xiamen University; Xiamen 361105, China
| | - Shaowei Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Science, Xiamen University; Xiamen 361105, China
| | - Zhiqiang An
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Science, Xiamen University; Xiamen 361105, China
- Texas Therapeutics Institute, The Brown Foundation of Molecular Medicine, University of Texas Health Science Center at Houston, Houston TX77030, USA
| | - Wenxin Luo
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Science, Xiamen University; Xiamen 361105, China
| | - Qinjian Zhao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Science, Xiamen University; Xiamen 361105, China
| | - Ningshao Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Science, Xiamen University; Xiamen 361105, China
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Zhang X, Li S, Modis Y, Li Z, Zhang J, Xia N, Zhao Q. Functional assessment and structural basis of antibody binding to human papillomavirus capsid. Rev Med Virol 2015; 26:115-28. [PMID: 26676802 DOI: 10.1002/rmv.1867] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 11/19/2015] [Accepted: 11/20/2015] [Indexed: 02/05/2023]
Abstract
Persistent high-risk human papillomavirus (HPV) infection is linked to cervical cancer. Two prophylactic virus-like particle (VLP)-based vaccines have been marketed globally for nearly a decade. Here, we review the HPV pseudovirion (PsV)-based assays for the functional assessment of the HPV neutralizing antibodies and the structural basis for these clinically relevant epitopes. The PsV-based neutralization assay was developed to evaluate the efficacy of neutralization antibodies in sera elicited by vaccination or natural infection or to assess the functional characteristics of monoclonal antibodies. Different antibody binding modes were observed when an antibody was complexed with virions, PsVs or VLPs. The neutralizing epitopes are localized on surface loops of the L1 capsid protein, at various locations on the capsomere. Different neutralization antibodies exert their neutralizing function via different mechanisms. Some antibodies neutralize the virions by inducing conformational changes in the viral capsid, which can result in concealing the binding site for a cellular receptor like 1A1D-2 against dengue virus, or inducing premature genome release like E18 against enterovirus 71. Higher-resolution details on the epitope composition of HPV neutralizing antibodies would shed light on the structural basis of the highly efficacious vaccines and aid the design of next generation vaccines. In-depth understanding of epitope composition would ensure the development of function-indicating assays for the comparability exercise to support process improvement or process scale up. Elucidation of the structural elements of the type-specific epitopes would enable rational design of cross-type neutralization via epitope re-engineering or epitope grafting in hybrid VLPs.
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Affiliation(s)
- Xiao Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, China.,School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Shaowei Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, China.,School of Public Health, Xiamen University, Xiamen, Fujian, China.,School of Life Science, Xiamen University, Xiamen, Fujian, China
| | - Yorgo Modis
- Department of Medicine, University of Cambridge, MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Zhihai Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, China.,School of Life Science, Xiamen University, Xiamen, Fujian, China
| | - Jun Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, China.,School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Ningshao Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, China.,School of Public Health, Xiamen University, Xiamen, Fujian, China.,School of Life Science, Xiamen University, Xiamen, Fujian, China
| | - Qinjian Zhao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, China.,School of Public Health, Xiamen University, Xiamen, Fujian, China
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35
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Tamborrini M, Geib N, Marrero-Nodarse A, Jud M, Hauser J, Aho C, Lamelas A, Zuniga A, Pluschke G, Ghasparian A, Robinson JA. A Synthetic Virus-Like Particle Streptococcal Vaccine Candidate Using B-Cell Epitopes from the Proline-Rich Region of Pneumococcal Surface Protein A. Vaccines (Basel) 2015; 3:850-74. [PMID: 26501327 PMCID: PMC4693222 DOI: 10.3390/vaccines3040850] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 10/09/2015] [Indexed: 02/01/2023] Open
Abstract
Alternatives to the well-established capsular polysaccharide-based vaccines against Streptococcus pneumoniae that circumvent limitations arising from limited serotype coverage and the emergence of resistance due to capsule switching (serotype replacement) are being widely pursued. Much attention is now focused on the development of recombinant subunit vaccines based on highly conserved pneumococcal surface proteins and virulence factors. A further step might involve focusing the host humoral immune response onto protective protein epitopes using as immunogens structurally optimized epitope mimetics. One approach to deliver such epitope mimetics to the immune system is through the use of synthetic virus-like particles (SVLPs). SVLPs are made from synthetic coiled-coil lipopeptides that are designed to spontaneously self-assemble into 20–30 nm diameter nanoparticles in aqueous buffer. Multivalent display of epitope mimetics on the surface of SVLPs generates highly immunogenic nanoparticles that elicit strong epitope-specific humoral immune responses without the need for external adjuvants. Here, we set out to demonstrate that this approach can yield vaccine candidates able to elicit a protective immune response, using epitopes derived from the proline-rich region of pneumococcal surface protein A (PspA). These streptococcal SVLP-based vaccine candidates are shown to elicit strong humoral immune responses in mice. Following active immunization and challenge with lethal doses of streptococcus, SVLP-based immunogens are able to elicit significant protection in mice. Furthermore, a mimetic-specific monoclonal antibody is shown to mediate partial protection upon passive immunization. The results show that SVLPs combined with synthetic epitope mimetics may have potential for the development of an effective vaccine against Streptococcus pneumoniae.
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Affiliation(s)
- Marco Tamborrini
- Swiss Tropical and Public Health Institute, Socinstrasse 57, Basel 4051, Switzerland; E-Mails: (M.T.); (M.J.); (J.H.); (C.A.); (A.L.); (G.P.)
- University of Basel, Petersplatz 1, Basel 4003, Switzerland
| | - Nina Geib
- Virometix AG, Wagistrasse 14, Schlieren 8952, Switzerland; E-Mails: (N.G.); (A.M.-N.); (A.Z.)
| | | | - Maja Jud
- Swiss Tropical and Public Health Institute, Socinstrasse 57, Basel 4051, Switzerland; E-Mails: (M.T.); (M.J.); (J.H.); (C.A.); (A.L.); (G.P.)
- University of Basel, Petersplatz 1, Basel 4003, Switzerland
| | - Julia Hauser
- Swiss Tropical and Public Health Institute, Socinstrasse 57, Basel 4051, Switzerland; E-Mails: (M.T.); (M.J.); (J.H.); (C.A.); (A.L.); (G.P.)
- University of Basel, Petersplatz 1, Basel 4003, Switzerland
| | - Celestine Aho
- Swiss Tropical and Public Health Institute, Socinstrasse 57, Basel 4051, Switzerland; E-Mails: (M.T.); (M.J.); (J.H.); (C.A.); (A.L.); (G.P.)
- University of Basel, Petersplatz 1, Basel 4003, Switzerland
| | - Araceli Lamelas
- Swiss Tropical and Public Health Institute, Socinstrasse 57, Basel 4051, Switzerland; E-Mails: (M.T.); (M.J.); (J.H.); (C.A.); (A.L.); (G.P.)
- University of Basel, Petersplatz 1, Basel 4003, Switzerland
| | - Armando Zuniga
- Virometix AG, Wagistrasse 14, Schlieren 8952, Switzerland; E-Mails: (N.G.); (A.M.-N.); (A.Z.)
| | - Gerd Pluschke
- Swiss Tropical and Public Health Institute, Socinstrasse 57, Basel 4051, Switzerland; E-Mails: (M.T.); (M.J.); (J.H.); (C.A.); (A.L.); (G.P.)
- University of Basel, Petersplatz 1, Basel 4003, Switzerland
| | - Arin Ghasparian
- Virometix AG, Wagistrasse 14, Schlieren 8952, Switzerland; E-Mails: (N.G.); (A.M.-N.); (A.Z.)
- Authors to whom correspondence should be addressed; E-Mails: (A.G.); (J.A.R.); Tel.: +41-43-433-8685 (A.G.); +41-44-635-4242 (J.A.R.)
| | - John A. Robinson
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, Zürich 8057, Switzerland
- Authors to whom correspondence should be addressed; E-Mails: (A.G.); (J.A.R.); Tel.: +41-43-433-8685 (A.G.); +41-44-635-4242 (J.A.R.)
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