1
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Zhao X, Zhang Y, Trejo-Cerro O, Kaplan E, Li Z, Albertsboer F, El Hammiri N, Mariz FC, Banks L, Ottonello S, Müller M. A safe and potentiated multi-type HPV L2-E7 nanoparticle vaccine with combined prophylactic and therapeutic activity. NPJ Vaccines 2024; 9:119. [PMID: 38926425 PMCID: PMC11208501 DOI: 10.1038/s41541-024-00914-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 06/17/2024] [Indexed: 06/28/2024] Open
Abstract
Persistent infection with high-risk human papillomavirus (HPV) is widely recognized as the primary cause of cervical and other malignant cancers. There are six licensed prophylactic vaccines available against HPV, but none of them shows any significant therapeutic effect on pre-existing infections or lesions. Thus, a prophylactic vaccine also endowed with therapeutic activity would afford protection regardless of the vaccine recipients HPV-infection status. Here, we describe the refinement and further potentiation of a dual-purpose HPV nanoparticle vaccine (hereafter referred to as cPANHPVAX) relying on eight different HPV L2 peptide epitopes and on the E7 oncoantigens from HPV16 and 18. cPANHPVAX not only induces anti-HPV16 E7 cytotoxic T-cell responses in C57BL/6 mice, but also anti-HPV18 E7 T-cell responses in transgenic mice with the A2.DR1 haplotype. These cytotoxic responses add up to a potent, broad-coverage humoral (HPV-neutralizing) response. cPANHPVAX safety was further improved by deletion of the pRb-binding domains of E7. Our dual-purpose vaccine holds great potential for clinical translation as an immune-treatment capable of targeting active infections as well as established HPV-related malignancies, thus benefiting both uninfected and infected individuals.
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Affiliation(s)
- Xueer Zhao
- Tumorvirus-specific Vaccination Strategies, German Cancer Research Center, Heidelberg, Germany.
| | - Yueru Zhang
- Tumorvirus-specific Vaccination Strategies, German Cancer Research Center, Heidelberg, Germany
| | - Oscar Trejo-Cerro
- International Centre for Genetic Engineering and Biotechnology, Trieste, Italy
| | - Ecem Kaplan
- Tumorvirus-specific Vaccination Strategies, German Cancer Research Center, Heidelberg, Germany
| | - Zhe Li
- B Cell Immunology, German Cancer Research Center, Heidelberg, Germany
| | - Femke Albertsboer
- Tumorvirus-specific Vaccination Strategies, German Cancer Research Center, Heidelberg, Germany
| | - Neyla El Hammiri
- Tumorvirus-specific Vaccination Strategies, German Cancer Research Center, Heidelberg, Germany
| | - Filipe Colaço Mariz
- Tumorvirus-specific Vaccination Strategies, German Cancer Research Center, Heidelberg, Germany
| | - Lawrence Banks
- International Centre for Genetic Engineering and Biotechnology, Trieste, Italy
| | - Simone Ottonello
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Martin Müller
- Tumorvirus-specific Vaccination Strategies, German Cancer Research Center, Heidelberg, Germany.
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2
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Zhang Y, Mariz FC, Sehr P, Spagnoli G, Koenig KM, Çelikyürekli S, Kreuziger T, Zhao X, Bolchi A, Ottonello S, Müller M. Inter-epitope spacer variation within polytopic L2-based human papillomavirus antigens affects immunogenicity. NPJ Vaccines 2024; 9:44. [PMID: 38402256 PMCID: PMC10894200 DOI: 10.1038/s41541-024-00832-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 02/05/2024] [Indexed: 02/26/2024] Open
Abstract
The human papillomavirus minor capsid protein L2 is being extensively explored in pre-clinical studies as an attractive vaccine antigen capable of inducing broad-spectrum prophylactic antibody responses. Recently, we have developed two HPV vaccine antigens - PANHPVAX and CUT-PANHPVAX- both based on heptameric nanoparticle antigens displaying polytopes of the L2 major cross-neutralizing epitopes of eight mucosal and twelve cutaneous HPV types, respectively. Prompted by the variable neutralizing antibody responses against some of the HPV types targeted by the antigens observed in previous studies, here we investigated the influence on immunogenicity of six distinct glycine-proline spacers inserted upstream to a specific L2 epitope. We show that spacer variants differentially influence antigen immunogenicity in a mouse model, with the antigen constructs M8merV6 and C12merV6 displaying a superior ability in the induction of neutralizing antibodies as determined by pseudovirus-based neutralization assays (PBNAs). L2-peptide enzyme-linked immunosorbent assay (ELISA) assessments determined the total anti-L2 antibody level for each antigen variant, showing for the majority of sera a correlation with their repective neutralizing antibody level. Surface Plasmon Resonance revealed that L2 epitope-specific, neutralizing monoclonal antibodies (mAbs) display distinct avidities to different antigen spacer variants. Furthermore, mAb affinity toward individual spacer variants was well correlated with their neutralizing antibody induction capacity, indicating that the mAb affinity assay predicts L2-based antigen immunogenicity. These observations provide insights on the development and optimization of L2-based HPV vaccines.
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Affiliation(s)
- Yueru Zhang
- German Cancer Research Center, Im Neuenheimer Feld 242, 69120, Heidelberg, Germany
| | - Filipe Colaco Mariz
- German Cancer Research Center, Im Neuenheimer Feld 242, 69120, Heidelberg, Germany
| | - Peter Sehr
- EMBL-DKFZ Chemical Biology Core Facility, European Molecular Biology Laboratory, 69117, Heidelberg, Germany
| | - Gloria Spagnoli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124, Parma, Italy
| | - Karl Moritz Koenig
- German Cancer Research Center, Im Neuenheimer Feld 242, 69120, Heidelberg, Germany
| | - Simay Çelikyürekli
- German Cancer Research Center, Im Neuenheimer Feld 242, 69120, Heidelberg, Germany
| | - Tim Kreuziger
- Ruprecht-Karls University Heidelberg, Heidelberg, Germany
| | - Xueer Zhao
- German Cancer Research Center, Im Neuenheimer Feld 242, 69120, Heidelberg, Germany
| | - Angelo Bolchi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124, Parma, Italy
| | - Simone Ottonello
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124, Parma, Italy
| | - Martin Müller
- German Cancer Research Center, Im Neuenheimer Feld 242, 69120, Heidelberg, Germany.
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3
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Rajneesh, Tiwari R, Singh VK, Kumar A, Gupta RP, Singh AK, Gautam V, Kumar R. Advancements and Challenges in Developing Malaria Vaccines: Targeting Multiple Stages of the Parasite Life Cycle. ACS Infect Dis 2023; 9:1795-1814. [PMID: 37708228 DOI: 10.1021/acsinfecdis.3c00332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
Malaria, caused by Plasmodium species, remains a major global health concern, causing millions of deaths annually. While the introduction of the RTS,S vaccine has shown promise, there is a pressing need for more effective vaccines due to the emergence of drug-resistant parasites and insecticide-resistant vectors. However, the complex life cycle and genetic diversity of the parasite, technical obstacles, limited funding, and the impact of the 2019 pandemic have hindered progress in malaria vaccine development. This review focuses on advancements in malaria vaccine development, particularly the ongoing clinical trials targeting antigens from different stages of the Plasmodium life cycle. Additionally, we discuss the rationale, strategies, and challenges associated with vaccine design, aiming to enhance the immune response and protective efficacy of vaccine candidates. A cost-effective and multistage vaccine could hold the key to controlling and eradicating malaria.
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Affiliation(s)
- Rajneesh
- Centre of Experimental Medicine & Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Rahul Tiwari
- Centre of Experimental Medicine & Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Vishal K Singh
- Centre of Experimental Medicine & Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Awnish Kumar
- Centre of Experimental Medicine & Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Rohit P Gupta
- Centre of Experimental Medicine & Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
- Department of Applied Microbiology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Akhilesh K Singh
- Faculty of Dental Science, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Vibhav Gautam
- Centre of Experimental Medicine & Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Rajiv Kumar
- Centre of Experimental Medicine & Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
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4
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Park J, Pho T, Champion JA. Chemical and biological conjugation strategies for the development of multivalent protein vaccine nanoparticles. Biopolymers 2023; 114:e23563. [PMID: 37490564 PMCID: PMC10528127 DOI: 10.1002/bip.23563] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 05/19/2023] [Accepted: 07/03/2023] [Indexed: 07/27/2023]
Abstract
The development of subunit vaccine platforms has been of considerable interest due to their good safety profile and ability to be adapted to new antigens, compared to other vaccine typess. Nevertheless, subunit vaccines often lack sufficient immunogenicity to fully protect against infectious diseases. A wide variety of subunit vaccines have been developed to enhance antigen immunogenicity by increasing antigen multivalency, as well as stability and delivery properties, via presentation of antigens on protein nanoparticles. Increasing multivalency can be an effective approach to provide a potent humoral immune response by more strongly engaging and clustering B cell receptors (BCRs) to induce activation, as well as increased uptake by antigen presenting cells and their subsequent T cell activation. Proper orientation of antigen on protein nanoparticles is also considered a crucial factor for enhanced BCR engagement and subsequent immune responses. Therefore, various strategies have been reported to decorate highly repetitive surfaces of protein nanoparticle scaffolds with multiple copies of antigens, arrange antigens in proper orientation, or combinations thereof. In this review, we describe different chemical bioconjugation methods, approaches for genetic fusion of recombinant antigens, biological affinity tags, and enzymatic conjugation methods to effectively present antigens on the surface of protein nanoparticle vaccine scaffolds.
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Affiliation(s)
- Jaeyoung Park
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Dr. NW, Atlanta, GA, 30332-2000, USA
| | - Thomas Pho
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Dr. NW, Atlanta, GA, 30332-2000, USA
- BioEngineering Program
| | - Julie A. Champion
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Dr. NW, Atlanta, GA, 30332-2000, USA
- BioEngineering Program
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5
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Tursi NJ, Xu Z, Kulp DW, Weiner DB. Gene-encoded nanoparticle vaccine platforms for in vivo assembly of multimeric antigen to promote adaptive immunity. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2023; 15:e1880. [PMID: 36807845 PMCID: PMC10665986 DOI: 10.1002/wnan.1880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 01/14/2023] [Accepted: 01/19/2023] [Indexed: 02/23/2023]
Abstract
Nanoparticle vaccines are a diverse category of vaccines for the prophylaxis or treatment of various diseases. Several strategies have been employed for their optimization, especially to enhance vaccine immunogenicity and generate potent B-cell responses. Two major modalities utilized for particulate antigen vaccines include using nanoscale structures for antigen delivery and nanoparticles that are themselves vaccines due to antigen display or scaffolding-the latter of which we will define as "nanovaccines." Multimeric antigen display has a variety of immunological benefits compared to monomeric vaccines mediated through potentiating antigen-presenting cell presentation and enhancing antigen-specific B-cell responses through B-cell activation. The majority of nanovaccine assembly is done in vitro using cell lines. However, in vivo assembly of scaffolded vaccines potentiated using nucleic acids or viral vectors is a burgeoning modality of nanovaccine delivery. Several advantages to in vivo assembly exist, including lower costs of production, fewer production barriers, as well as more rapid development of novel vaccine candidates for emerging diseases such as SARS-CoV-2. This review will characterize the methods for de novo assembly of nanovaccines in the host using methods of gene delivery including nucleic acid and viral vectored vaccines. This article is categorized under: Therapeutic Approaches and Drug Discovery > Nanomedicine for Infectious Disease Biology-Inspired Nanomaterials > Nucleic Acid-Based Structures Biology-Inspired Nanomaterials > Protein and Virus-Based Structures Therapeutic Approaches and Drug Discovery > Emerging Technologies.
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Affiliation(s)
- Nicholas J. Tursi
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, Pennsylvania, USA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ziyang Xu
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, Pennsylvania, USA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Daniel W. Kulp
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - David B. Weiner
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, Pennsylvania, USA
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6
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Sorokina J, Sokolova I, Majorina M, Ungur A, Troitskiy V, Tukhvatulin A, Melnik B, Belyi Y. Oligomerization and Adjuvant Activity of Peptides Derived from the VirB4-like ATPase of Clostridioides difficile. Biomolecules 2023; 13:1012. [PMID: 37371592 DOI: 10.3390/biom13061012] [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: 05/21/2023] [Revised: 06/13/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
In a previous study, we demonstrated that the Clostridioides difficile VirB4-like ATPase forms oligomers in vitro. In the current investigation, to study the observed phenomenon in more detail, we prepared a library of VirB4-derived peptides (delVirB4s) fused to a carrier maltose-binding protein (MBP). Using gel chromatography and polyacrylamide gel electrophoresis, we found a set of overlapping fragments that contribute most significantly to protein aggregation, which were represented as water-soluble oligomers with molecular masses ranging from ~300 kD to several megadaltons. Membrane filtration experiments, sucrose gradient ultracentrifugation, and dynamic light scattering measurements indicated the size of the soluble complex to be 15-100 nm. It was sufficiently stable to withstand treatment with 1 M urea; however, it dissociated in a 6 M urea solution. As shown by the changes in GFP fluorescence and the circular dichroism spectra, the attachment of the delVirB4 peptide significantly altered the structure of the partner MBP. The immunization of mice with the hybrid consisting of the selected VirB4-derived peptide and MBP, GST, or GFP resulted in increased production of specific antibodies compared to the peptide-free carrier proteins, suggesting significant adjuvant activity of the VirB4 fragment. This feature could be useful for the development of new vaccines, especially in the case of "weak" antigens that are unable to elicit a strong immune response by themselves.
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Affiliation(s)
- Julya Sorokina
- Gamaleya Research Centre for Epidemiology and Microbiology, Moscow 123098, Russia
| | - Irina Sokolova
- Gamaleya Research Centre for Epidemiology and Microbiology, Moscow 123098, Russia
| | - Mariya Majorina
- Institute of Protein Research, Russian Academy of Sciences, Pushchino 142290, Russia
| | - Anastasia Ungur
- Gamaleya Research Centre for Epidemiology and Microbiology, Moscow 123098, Russia
| | - Vasiliy Troitskiy
- Department of Infectious Diseases, Institute of Clinical Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), 2 Bolshaya Pirogovskaya St., Moscow 119435, Russia
| | - Amir Tukhvatulin
- Gamaleya Research Centre for Epidemiology and Microbiology, Moscow 123098, Russia
| | - Bogdan Melnik
- Institute of Protein Research, Russian Academy of Sciences, Pushchino 142290, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Pushchino Branch, Russian Academy of Sciences, Pushchino 142290, Russia
| | - Yury Belyi
- Gamaleya Research Centre for Epidemiology and Microbiology, Moscow 123098, Russia
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7
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Hasche D, Akgül B. Prevention and Treatment of HPV-Induced Skin Tumors. Cancers (Basel) 2023; 15:cancers15061709. [PMID: 36980594 PMCID: PMC10046090 DOI: 10.3390/cancers15061709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/02/2023] [Accepted: 03/09/2023] [Indexed: 03/18/2023] Open
Abstract
Non-melanoma skin cancer (NMSC) is the most common cancer in humans with increasing incidence. Meanwhile, a growing body of evidence has provided a link between skin infections with HPV of the genus beta (betaHPV) and the development of cutaneous squamous cell carcinomas (cSCCs). Based on this association, the development of vaccines against betaHPV has become an important research topic. This review summarizes the current advances in prophylactic and therapeutic betaHPV vaccines, including progresses made in preclinical testing and clinical trials.
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Affiliation(s)
- Daniel Hasche
- Division of Viral Transformation Mechanisms, Research Program “Infection, Inflammation and Cancer”, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 242, 69120 Heidelberg, Germany
| | - Baki Akgül
- Institute of Virology, Medical Faculty and University Hospital Cologne, University of Cologne, Fürst-Pückler-Str. 56, 50935 Cologne, Germany
- Correspondence:
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8
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Tailored Functionalized Protein Nanocarriers for Cancer Therapy: Recent Developments and Prospects. Pharmaceutics 2023; 15:pharmaceutics15010168. [PMID: 36678796 PMCID: PMC9861211 DOI: 10.3390/pharmaceutics15010168] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/28/2022] [Accepted: 12/29/2022] [Indexed: 01/06/2023] Open
Abstract
Recently, the potential use of nanoparticles for the targeted delivery of therapeutic and diagnostic agents has garnered increased interest. Several nanoparticle drug delivery systems have been developed for cancer treatment. Typically, protein-based nanocarriers offer several advantages, including biodegradability and biocompatibility. Using genetic engineering or chemical conjugation approaches, well-known naturally occurring protein nanoparticles can be further prepared, engineered, and functionalized in their self-assembly to meet the demands of clinical production efficiency. Accordingly, promising protein nanoparticles have been developed with outstanding tumor-targeting capabilities, ultimately overcoming multidrug resistance issues, in vivo delivery barriers, and mimicking the tumor microenvironment. Bioinspired by natural nanoparticles, advanced computational techniques have been harnessed for the programmable design of highly homogenous protein nanoparticles, which could open new routes for the rational design of vaccines and drug formulations. The current review aims to present several significant advancements made in protein nanoparticle technology, and their use in cancer therapy. Additionally, tailored construction methods and therapeutic applications of engineered protein-based nanoparticles are discussed.
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9
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A broadly protective vaccine against cutaneous human papillomaviruses. NPJ Vaccines 2022; 7:116. [PMID: 36216845 PMCID: PMC9550855 DOI: 10.1038/s41541-022-00539-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 09/08/2022] [Indexed: 11/19/2022] Open
Abstract
Skin colonization by human papillomavirus (HPV) is typically related to inconspicuous cutaneous infections without major disease or complications in immunocompetent individuals. However, in immunosuppressed patients, especially organ transplanted recipients, cutaneous HPV infections may cause massive, highly spreading and recurrent skin lesions upon synergism with UV-exposure. Current HPV prophylactic vaccines are not effective against cutaneous HPV types (cHPV). By applying a modular polytope-based approach, in this work, we explored different vaccine candidates based on selected, tandemly arranged cHPV-L2 epitopes fused to thioredoxin (Trx) as a scaffold protein. Upon conversion to heptameric nanoparticles with the use of a genetically fused oligomerization domain, our candidate Trx-L2 vaccines induce broadly neutralizing immune responses against 19 cHPV in guinea pigs. Similar findings were obtained in mice, where protection against virus challenge was also achieved via passive transfer of immune sera. Remarkably, immunization with the candidate cHPV vaccines also induced immune responses against several mucosal low- and high-risk HPV types, including HPV16 and 18. Based on cumulative immunogenicity data but also on ease and yield of production, we identified a lead vaccine candidate bearing 12 different cHPV-L2 epitopes that holds great promise as a scalable and GMP production-compatible lead molecule for the prevention of post-transplantation skin lesions caused by cHPV infection.
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10
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Ahmels M, Mariz FC, Braspenning-Wesch I, Stephan S, Huber B, Schmidt G, Cao R, Müller M, Kirnbauer R, Rösl F, Hasche D. Next generation L2-based HPV vaccines cross-protect against cutaneous papillomavirus infection and tumor development. Front Immunol 2022; 13:1010790. [PMID: 36263027 PMCID: PMC9574214 DOI: 10.3389/fimmu.2022.1010790] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 09/16/2022] [Indexed: 11/25/2022] Open
Abstract
Licensed L1-VLP-based immunizations against high-risk mucosal human papillomavirus (HPV) types have been a great success in reducing anogenital cancers, although they are limited in their cross-protection against HPV types not covered by the vaccine. Further, their utility in protection against cutaneous HPV types, of which some contribute to non-melanoma skin cancer (NMSC) development, is rather low. Next generation vaccines achieve broadly cross-protective immunity against highly conserved sequences of L2. In this exploratory study, we tested two novel HPV vaccine candidates, HPV16 RG1-VLP and CUT-PANHPVAX, in the preclinical natural infection model Mastomys coucha. After immunization with either vaccines, a mock control or MnPV L1-VLPs, the animals were experimentally infected and monitored. Besides vaccine-specific seroconversion against HPV L2 peptides, the animals also developed cross-reactive antibodies against the cutaneous Mastomys natalensis papillomavirus (MnPV) L2, which were cross-neutralizing MnPV pseudovirions in vitro. Further, both L2-based vaccines also conferred in vivo protection as the viral loads in plucked hair after experimental infection were lower compared to mock-vaccinated control animals. Importantly, the formation of neutralizing antibodies, whether directed against L1-VLPs or L2, was able to prevent skin tumor formation and even microscopical signs of MnPV infection in the skin. For the first time, our study shows the proof-of-principle of next generation L2-based vaccines even across different PV genera in an infection animal model with its genuine PV. It provides fundamental insights into the humoral immunity elicited by L2-based vaccines against PV-induced skin tumors, with important implications to the design of next generation HPV vaccines.
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Affiliation(s)
- Melinda Ahmels
- Division of Viral Transformation Mechanisms, Research Program “Infection, Inflammation and Cancer”, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Filipe C. Mariz
- Research Group Tumorvirus-specific Vaccination Strategies, Research Program “Infection, Inflammation and Cancer”, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ilona Braspenning-Wesch
- Division of Viral Transformation Mechanisms, Research Program “Infection, Inflammation and Cancer”, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Sonja Stephan
- Division of Viral Transformation Mechanisms, Research Program “Infection, Inflammation and Cancer”, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Bettina Huber
- Laboratory of Viral Oncology, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Gabriele Schmidt
- Core Facility Unit Light Microscopy, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Rui Cao
- Division of Viral Transformation Mechanisms, Research Program “Infection, Inflammation and Cancer”, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Martin Müller
- Research Group Tumorvirus-specific Vaccination Strategies, Research Program “Infection, Inflammation and Cancer”, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Reinhard Kirnbauer
- Laboratory of Viral Oncology, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Frank Rösl
- Division of Viral Transformation Mechanisms, Research Program “Infection, Inflammation and Cancer”, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Daniel Hasche
- Division of Viral Transformation Mechanisms, Research Program “Infection, Inflammation and Cancer”, German Cancer Research Center (DKFZ), Heidelberg, Germany
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11
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Cavazzini D, Spagnoli G, Mariz FC, Reggiani F, Maggi S, Franceschi V, Donofrio G, Müller M, Bolchi A, Ottonello S. Enhanced immunogenicity of a positively supercharged archaeon thioredoxin scaffold as a cell-penetrating antigen carrier for peptide vaccines. Front Immunol 2022; 13:958123. [PMID: 36032169 PMCID: PMC9405434 DOI: 10.3389/fimmu.2022.958123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 07/19/2022] [Indexed: 11/14/2022] Open
Abstract
Polycationic resurfaced proteins hold great promise as cell-penetrating bioreagents but their use as carriers for the intracellular delivery of peptide immuno-epitopes has not thus far been explored. Here, we report on the construction and functional characterization of a positively supercharged derivative of Pyrococcus furiosus thioredoxin (PfTrx), a thermally hyperstable protein we have previously validated as a peptide epitope display and immunogenicity enhancing scaffold. Genetic conversion of 13 selected amino acids to lysine residues conferred to PfTrx a net charge of +21 (starting from the -1 charge of the wild-type protein), along with the ability to bind nucleic acids. In its unfused form, +21 PfTrx was readily internalized by HeLa cells and displayed a predominantly cytosolic localization. A different intracellular distribution was observed for a +21 PfTrx-eGFP fusion protein, which although still capable of cell penetration was predominantly localized within endosomes. A mixed cytosolic/endosomal partitioning was observed for a +21 PfTrx derivative harboring three tandemly repeated copies of a previously validated HPV16-L2 (aa 20-38) B-cell epitope grafted to the display site of thioredoxin. Compared to its wild-type counterpart, the positively supercharged antigen induced a faster immune response and displayed an overall superior immunogenicity, including a substantial degree of self-adjuvancy. Altogether, the present data point to +21 PfTrx as a promising novel carrier for intracellular antigen delivery and the construction of potentiated recombinant subunit vaccines.
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Affiliation(s)
- Davide Cavazzini
- Department of Chemistry, Life Sciences & Environmental Sustainability, University of Parma, Parma, Italy
| | - Gloria Spagnoli
- Department of Chemistry, Life Sciences & Environmental Sustainability, University of Parma, Parma, Italy
| | - Filipe Colaco Mariz
- German Cancer Research Center (DKFZ), Tumorvirus-specific Vaccination Strategies (F035), Heidelberg, Germany
| | - Filippo Reggiani
- Department of Chemistry, Life Sciences & Environmental Sustainability, University of Parma, Parma, Italy
| | - Stefano Maggi
- Department of Chemistry, Life Sciences & Environmental Sustainability, University of Parma, Parma, Italy
| | | | - Gaetano Donofrio
- Department of Veterinary Science, University of Parma, Parma, Italy
- Interdepartmental Center Biopharmanet-Tec, University of Parma, Parma, Italy
| | - Martin Müller
- German Cancer Research Center (DKFZ), Tumorvirus-specific Vaccination Strategies (F035), Heidelberg, Germany
- *Correspondence: Martin Müller, ; Angelo Bolchi,
| | - Angelo Bolchi
- Department of Chemistry, Life Sciences & Environmental Sustainability, University of Parma, Parma, Italy
- Interdepartmental Center Biopharmanet-Tec, University of Parma, Parma, Italy
- *Correspondence: Martin Müller, ; Angelo Bolchi,
| | - Simone Ottonello
- Department of Chemistry, Life Sciences & Environmental Sustainability, University of Parma, Parma, Italy
- Interdepartmental Center Biopharmanet-Tec, University of Parma, Parma, Italy
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12
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Malhi H, Homad LJ, Wan YH, Poudel B, Fiala B, Borst AJ, Wang JY, Walkey C, Price J, Wall A, Singh S, Moodie Z, Carter L, Handa S, Correnti CE, Stoddard BL, Veesler D, Pancera M, Olson J, King NP, McGuire AT. Immunization with a self-assembling nanoparticle vaccine displaying EBV gH/gL protects humanized mice against lethal viral challenge. Cell Rep Med 2022; 3:100658. [PMID: 35705092 PMCID: PMC9245003 DOI: 10.1016/j.xcrm.2022.100658] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 04/12/2022] [Accepted: 05/17/2022] [Indexed: 01/09/2023]
Abstract
Epstein-Barr virus (EBV) is a cancer-associated pathogen responsible for 165,000 deaths annually. EBV is also the etiological agent of infectious mononucleosis and is linked to multiple sclerosis and rheumatoid arthritis. Thus, an EBV vaccine would have a significant global health impact. EBV is orally transmitted and has tropism for epithelial and B cells. Therefore, a vaccine would need to prevent infection of both in the oral cavity. Passive transfer of monoclonal antibodies against the gH/gL glycoprotein complex prevent experimental EBV infection in humanized mice and rhesus macaques, suggesting that gH/gL is an attractive vaccine candidate. Here, we evaluate the immunogenicity of several gH/gL nanoparticle vaccines. All display superior immunogenicity relative to monomeric gH/gL. A nanoparticle displaying 60 copies of gH/gL elicits antibodies that protect against lethal EBV challenge in humanized mice, whereas antibodies elicited by monomeric gH/gL do not. These data motivate further development of gH/gL nanoparticle vaccines for EBV.
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Affiliation(s)
- Harman Malhi
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle WA 98109, USA
| | - Leah J Homad
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle WA 98109, USA
| | - Yu-Hsin Wan
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle WA 98109, USA
| | - Bibhav Poudel
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle WA 98109, USA
| | - Brooke Fiala
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA; Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
| | - Andrew J Borst
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA; Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
| | - Jing Yang Wang
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA; Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
| | - Carl Walkey
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA; Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
| | - Jason Price
- Clinical Research Division, Fred Hutchinson Cancer Research Center Seattle, WA 98109, USA
| | - Abigail Wall
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle WA 98109, USA
| | - Suruchi Singh
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle WA 98109, USA
| | - Zoe Moodie
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle WA 98109, USA
| | - Lauren Carter
- Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
| | - Simran Handa
- Clinical Research Division, Fred Hutchinson Cancer Research Center Seattle, WA 98109, USA
| | - Colin E Correnti
- Clinical Research Division, Fred Hutchinson Cancer Research Center Seattle, WA 98109, USA
| | - Barry L Stoddard
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - David Veesler
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA; Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA
| | - Marie Pancera
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle WA 98109, USA
| | - James Olson
- Clinical Research Division, Fred Hutchinson Cancer Research Center Seattle, WA 98109, USA
| | - Neil P King
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA; Institute for Protein Design, University of Washington, Seattle, WA 98195, USA
| | - Andrew T McGuire
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle WA 98109, USA; Department of Global Health, University of Washington, Seattle, WA 98195, USA; Department of Laboratory Medicine and Pathology, University of Washington, Seattle WA 98115, USA.
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13
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Mulamba C, Williams C, Kreppel K, Ouedraogo JB, Olotu AI. Evaluation of the Pfs25-IMX313/Matrix-M malaria transmission-blocking candidate vaccine in endemic settings. Malar J 2022; 21:159. [PMID: 35655174 PMCID: PMC9161629 DOI: 10.1186/s12936-022-04173-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 05/02/2022] [Indexed: 11/10/2022] Open
Abstract
Malaria control relies heavily on the use of anti-malarial drugs and insecticides against malaria parasites and mosquito vectors. Drug and insecticide resistance threatens the effectiveness of conventional malarial interventions; alternative control approaches are, therefore, needed. The development of malaria transmission-blocking vaccines that target the sexual stages in humans or mosquito vectors is among new approaches being pursued. Here, the immunological mechanisms underlying malaria transmission blocking, status of Pfs25-based vaccines are viewed, as well as approaches and capacity for first in-human evaluation of a transmission-blocking candidate vaccine Pfs25-IMX313/Matrix-M administered to semi-immune healthy individuals in endemic settings. It is concluded that institutions in low and middle income settings should be supported to conduct first-in human vaccine trials in order to stimulate innovative research and reduce the overdependence on developed countries for research and local interventions against many diseases of public health importance.
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Affiliation(s)
- Charles Mulamba
- Interventions & Clinical Trials Department, Ifakara Health Institute, P.O. Box 74, Bagamoyo, Tanzania.,Nelson Mandela African Institution of Science and Technology, Tengeru, P. O. Box 447, Arusha, Tanzania
| | - Chris Williams
- The Jenner Institute, University of Oxford, Roosevelt Drive, Headington, Oxford, OX3 7DQ, UK
| | - Katharina Kreppel
- Nelson Mandela African Institution of Science and Technology, Tengeru, P. O. Box 447, Arusha, Tanzania
| | | | - Ally I Olotu
- Interventions & Clinical Trials Department, Ifakara Health Institute, P.O. Box 74, Bagamoyo, Tanzania.
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14
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Nanoparticle and virus-like particle vaccine approaches against SARS-CoV-2. J Microbiol 2022; 60:335-346. [PMID: 35089583 PMCID: PMC8795728 DOI: 10.1007/s12275-022-1608-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/16/2021] [Accepted: 12/16/2021] [Indexed: 02/06/2023]
Abstract
The global spread of coronavirus disease 2019 caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has provoked an urgent need for prophylactic measures. Several innovative vaccine platforms have been introduced and billions of vaccine doses have been administered worldwide. To enable the creation of safer and more effective vaccines, additional platforms are under development. These include the use of nanoparticle (NP) and virus-like particle (VLP) technology. NP vaccines utilize self-assembling scaffold structures designed to load the entire spike protein or receptor-binding domain of SARS-CoV-2 in a trimeric configuration. In contrast, VLP vaccines are genetically modified recombinant viruses that are considered safe, as they are generally replication-defective. Furthermore, VLPs have indigenous immunogenic potential due to their microbial origin. Importantly, NP and VLP vaccines have shown stronger immunogenicity with greater protection by mimicking the physicochemical characteristics of SARS-CoV-2. The study of NP- and VLP-based coronavirus vaccines will help ensure the development of rapid-response technology against SARS-CoV-2 variants and future coronavirus pandemics.
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15
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Zaric M, Marini A, Nielsen CM, Gupta G, Mekhaiel D, Pham TP, Elias SC, Taylor IJ, de Graaf H, Payne RO, Li Y, Silk SE, Williams C, Hill AVS, Long CA, Miura K, Biswas S. Poor CD4 + T Cell Immunogenicity Limits Humoral Immunity to P. falciparum Transmission-Blocking Candidate Pfs25 in Humans. Front Immunol 2021; 12:732667. [PMID: 34659219 PMCID: PMC8515144 DOI: 10.3389/fimmu.2021.732667] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/07/2021] [Indexed: 11/13/2022] Open
Abstract
Plasmodium falciparum transmission-blocking vaccines (TBVs) targeting the Pfs25 antigen have shown promise in mice but the same efficacy has never been achieved in humans. We have previously published pre-clinical data related to a TBV candidate Pfs25-IMX313 encoded in viral vectors which was very promising and hence progressed to human clinical trials. The results from the clinical trial of this vaccine were very modest. Here we unravel why, contrary to mice, this vaccine has failed to induce robust antibody (Ab) titres in humans to elicit transmission-blocking activity. We examined Pfs25-specific B cell and T follicular helper (Tfh) cell responses in mice and humans after vaccination with Pfs25-IMX313 encoded by replication-deficient chimpanzee adenovirus serotype 63 (ChAd63) and the attenuated orthopoxvirus modified vaccinia virus Ankara (MVA) delivered in the heterologous prime-boost regimen via intramuscular route. We found that after vaccination, the Pfs25-IMX313 was immunologically suboptimal in humans compared to mice in terms of serum Ab production and antigen-specific B, CD4+ and Tfh cell responses. We identified that the key determinant for the poor anti-Pfs25 Ab formation in humans was the lack of CD4+ T cell recognition of Pfs25-IMX313 derived peptide epitopes. This is supported by correlations established between the ratio of proliferated antigen-specific CD4+/Tfh-like T cells, CXCL13 sera levels, and the corresponding numbers of circulating Pfs25-specific memory B cells, that consequently reflected on antigen-specific IgG sera levels. These correlations can inform the design of next-generation Pfs25-based vaccines for robust and durable blocking of malaria transmission.
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Affiliation(s)
- Marija Zaric
- Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Arianna Marini
- Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Carolyn M Nielsen
- Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Gaurav Gupta
- Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - David Mekhaiel
- Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Thao P Pham
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, National Institutes of Health, Rockville, MD, United States
| | - Sean C Elias
- Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Iona J Taylor
- Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Hans de Graaf
- NIHR Clinical Research Facility, University Hospital Southampton NHS Foundation Trust and Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Ruth O Payne
- Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Yuanyuan Li
- Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Sarah E Silk
- Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Chris Williams
- Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Adrian V S Hill
- Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Carole A Long
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, National Institutes of Health, Rockville, MD, United States
| | - Kazutoyo Miura
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, National Institutes of Health, Rockville, MD, United States
| | - Sumi Biswas
- Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford, United Kingdom
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16
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Yang JI, Kim KH. Fusion of Streptococcus iniae α-enolase to IMX313 enhanced antibody titer and survival rate in olive flounder (Paralichthys olivaceus). FISH & SHELLFISH IMMUNOLOGY 2021; 115:70-74. [PMID: 34089887 DOI: 10.1016/j.fsi.2021.05.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 05/17/2021] [Accepted: 05/31/2021] [Indexed: 06/12/2023]
Abstract
The polymerization of monomeric antigens can be a strategy to overcome the low immunogenicity of subunit vaccines. IMX313 is a hybrid oligomerization domain of chicken C4bp, and has been demonstrated to have potent activity as adjuvants for the fused antigens in mammals. In the present study, we investigated whether the oligomerization of α-enolase of Streptococcus iniae by fusion with IMX313 affected on antibody induction and on protection against S. iniae infection in olive flounder (Paralichthys olivaceus). The oligomerization of S. iniae enolase by fusion with IMX313 (enolase-IMX313) was verified by non-reducing PAGE, and the antibody titer against enolase in olive flounder immunized with enolase-IMX313 was significantly higher than that in fish immunized with enolase alone. Furthermore, although the survival of olive flounder immunized with enolase alone was low, fish immunized with enolase-IMX313 showed much higher survival (RPS 50%) in accordance with higher serum antibody titer, suggesting that fusion of antigens with IMX313 can be an effective way to enhance protective efficacy of subunit vaccines in olive flounder.
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Affiliation(s)
- Jeong In Yang
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, South Korea
| | - Ki Hong Kim
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, South Korea.
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17
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de Graaf H, Payne RO, Taylor I, Miura K, Long CA, Elias SC, Zaric M, Minassian AM, Silk SE, Li L, Poulton ID, Baker M, Draper SJ, Gbesemete D, Brendish NJ, Martins F, Marini A, Mekhaiel D, Edwards NJ, Roberts R, Vekemans J, Moyle S, Faust SN, Berrie E, Lawrie AM, Hill F, Hill AVS, Biswas S. Safety and Immunogenicity of ChAd63/MVA Pfs25-IMX313 in a Phase I First-in-Human Trial. Front Immunol 2021; 12:694759. [PMID: 34335606 PMCID: PMC8318801 DOI: 10.3389/fimmu.2021.694759] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 06/29/2021] [Indexed: 11/13/2022] Open
Abstract
Background Transmission blocking vaccines targeting the sexual-stages of the malaria parasite could play a major role to achieve elimination and eradication of malaria. The Plasmodium falciparum Pfs25 protein (Pfs25) is the most clinically advanced candidate sexual-stage antigen. IMX313, a complement inhibitor C4b-binding protein that forms heptamers with the antigen fused to it, improve antibody responses. This is the first time that viral vectors have been used to induce antibodies in humans against an antigen that is expressed only in the mosquito vector. Methods Clinical trial looking at safety and immunogenicity of two recombinant viral vectored vaccines encoding Pfs25-IMX313 in healthy malaria-naive adults. Replication-deficient chimpanzee adenovirus serotype 63 (ChAd63) and the attenuated orthopoxvirus modified vaccinia virus Ankara (MVA), encoding Pfs25-IMX313, were delivered by the intramuscular route in a heterologous prime-boost regimen using an 8-week interval. Safety data and samples for immunogenicity assays were taken at various time-points. Results The reactogenicity of the vaccines was similar to that seen in previous trials using the same viral vectors encoding other antigens. The vaccines were immunogenic and induced both antibody and T cell responses against Pfs25, but significant transmission reducing activity (TRA) was not observed in most volunteers by standard membrane feeding assay. Conclusion Both vaccines were well tolerated and demonstrated a favorable safety profile in malaria-naive adults. However, the transmission reducing activity of the antibodies generated were weak, suggesting the need for an alternative vaccine formulation. Trial Registration Clinicaltrials.gov NCT02532049.
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Affiliation(s)
- Hans de Graaf
- NIHR Clinical Research Facility, University Hospital Southampton NHS Foundation Trust and Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Ruth O Payne
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Iona Taylor
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Kazutoyo Miura
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Carol A Long
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Sean C Elias
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Marija Zaric
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | | | - Sarah E Silk
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Lee Li
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Ian D Poulton
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Megan Baker
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Simon J Draper
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Diane Gbesemete
- NIHR Clinical Research Facility, University Hospital Southampton NHS Foundation Trust and Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Nathan J Brendish
- NIHR Clinical Research Facility, University Hospital Southampton NHS Foundation Trust and Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Filipa Martins
- NIHR Clinical Research Facility, University Hospital Southampton NHS Foundation Trust and Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Arianna Marini
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - David Mekhaiel
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Nick J Edwards
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Rachel Roberts
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | | | - Sarah Moyle
- Clinical Biomanufacturing Facility, University of Oxford, Oxford, United Kingdom
| | - Saul N Faust
- NIHR Clinical Research Facility, University Hospital Southampton NHS Foundation Trust and Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Eleanor Berrie
- Clinical Biomanufacturing Facility, University of Oxford, Oxford, United Kingdom
| | - Alison M Lawrie
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | | | - Adrian V S Hill
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Sumi Biswas
- The Jenner Institute, University of Oxford, Oxford, United Kingdom
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18
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Fries CN, Curvino EJ, Chen JL, Permar SR, Fouda GG, Collier JH. Advances in nanomaterial vaccine strategies to address infectious diseases impacting global health. NATURE NANOTECHNOLOGY 2021; 16:1-14. [PMID: 32807876 DOI: 10.1038/s41565-020-0739-9] [Citation(s) in RCA: 108] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 06/23/2020] [Indexed: 05/18/2023]
Abstract
Despite the overwhelming success of vaccines in preventing infectious diseases, there remain numerous globally devastating diseases without fully protective vaccines, particularly human immunodeficiency virus (HIV), malaria and tuberculosis. Nanotechnology approaches are being developed both to design new vaccines against these diseases as well as to facilitate their global implementation. The reasons why a given pathogen may present difficulties for vaccine design are unique and tied to the co-evolutionary history of the pathogen and humans, but there are common challenges that nanotechnology is beginning to help address. In each case, a successful vaccine will need to raise immune responses that differ from the immune responses raised by normal infection. Nanomaterials, with their defined compositions, commonly modular construction, and length scales allowing the engagement of key immune pathways, collectively facilitate the iterative design process necessary to identify such protective immune responses and achieve them reliably. Nanomaterials also provide strategies for engineering the trafficking and delivery of vaccine components to key immune cells and lymphoid tissues, and they can be highly multivalent, improving their engagement with the immune system. This Review will discuss these aspects along with recent nanomaterial advances towards vaccines against infectious disease, with a particular emphasis on HIV/AIDS, malaria and tuberculosis.
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Affiliation(s)
- Chelsea N Fries
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | | | - Jui-Lin Chen
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - Sallie R Permar
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
- Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
- Department of Immunology, Duke University School of Medicine, Durham, NC, USA
| | - Genevieve G Fouda
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA.
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA.
- Department of Pediatrics, Duke University Medical Center, Durham, NC, USA.
| | - Joel H Collier
- Department of Biomedical Engineering, Duke University, Durham, NC, USA.
- Department of Immunology, Duke University School of Medicine, Durham, NC, USA.
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19
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Zhao X, Yang F, Mariz F, Osen W, Bolchi A, Ottonello S, Müller M. Combined prophylactic and therapeutic immune responses against human papillomaviruses induced by a thioredoxin-based L2-E7 nanoparticle vaccine. PLoS Pathog 2020; 16:e1008827. [PMID: 32886721 PMCID: PMC7498061 DOI: 10.1371/journal.ppat.1008827] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/17/2020] [Accepted: 07/21/2020] [Indexed: 01/08/2023] Open
Abstract
Global burden of cervical cancer, the most common cause of mortality caused by human papillomavirus (HPV), is expected to increase during the next decade, mainly because current alternatives for HPV vaccination and cervical cancer screening programs are costly to be established in low-and-middle income countries. Recently, we described the development of the broadly protective, thermostable vaccine antigen Trx-8mer-OVX313 based on the insertion of eight different minor capsid protein L2 neutralization epitopes into a thioredoxin scaffold from the hyperthermophilic archaeon Pyrococcus furiosus and conversion of the resulting antigen into a nanoparticle format (median radius ~9 nm) upon fusion with the heptamerizing OVX313 module. Here we evaluated whether the engineered thioredoxin scaffold, in addition to humoral immune responses, can induce CD8+ T-cell responses upon incorporation of MHC-I-restricted epitopes. By systematically examining the contribution of individual antigen modules, we demonstrated that B-cell and T-cell epitopes can be combined into a single antigen construct without compromising either immunogenicity. While CD8+ T-cell epitopes had no influence on B-cell responses, the L2 polytope (8mer) and OVX313-mediated heptamerization of the final antigen significantly increased CD8+ T-cell responses. In a proof-of-concept experiment, we found that vaccinated mice remained tumor-free even after two consecutive tumor challenges, while unvaccinated mice developed tumors. A cost-effective, broadly protective vaccine with both prophylactic and therapeutic properties represents a promising option to overcome the challenges associated with prevention and treatment of HPV-caused diseases. Currently, there are three licensed prophylactic vaccines available against HPV, but none of them shows a therapeutic effect on pre-existing infections. Thus, a prophylactic vaccine also endowed with a therapeutic activity presents application potentials to individuals regardless of their HPV-infection status. Such a dual-purpose vaccine would be particularly valuable for post-exposure prophylaxis and shields population from recurrent HPV infections. Here, we constructed a combined vaccine relying on L2- and E7-specific epitopes grafted onto the surface of a hyper-stable thioredoxin scaffold. The resulting antigen was converted into a nanoparticle format with the use of a heptamerization domain. Our data document that the modular design of the antigen allows combination of B-cell and T-cell epitopes in one antigen without compromising either’s immunogenicity. The antigen retains its ability to provide broad protection against different HPV types but also presents strong therapeutic effects in a mouse tumor model. Therefore, the vaccine is potentially capable of resolving productive infection as well as HPV-related malignancies, and thus benefitting both uninfected and already infected individuals. Moreover, our vaccine utilizes E. coli as protein producer and distribution does not require cold-chain, which reduces costs making it applicable to less-affluent countries.
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MESH Headings
- Animals
- Antigens, Neoplasm/chemistry
- Antigens, Neoplasm/pharmacology
- Antigens, Viral/chemistry
- Antigens, Viral/pharmacology
- Archaeal Proteins/chemistry
- Archaeal Proteins/pharmacology
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/pathology
- Cancer Vaccines/chemistry
- Cancer Vaccines/pharmacology
- Epitopes, B-Lymphocyte/chemistry
- Epitopes, B-Lymphocyte/pharmacology
- Epitopes, T-Lymphocyte/chemistry
- Epitopes, T-Lymphocyte/pharmacology
- Female
- Humans
- Immunity, Cellular/drug effects
- Mice
- Mice, Inbred BALB C
- Nanoparticles/chemistry
- Nanoparticles/therapeutic use
- Papillomaviridae/chemistry
- Papillomaviridae/immunology
- Papillomavirus Vaccines/chemistry
- Papillomavirus Vaccines/pharmacology
- Pyrococcus furiosus/chemistry
- Thioredoxins/chemistry
- Thioredoxins/pharmacology
- Uterine Cervical Neoplasms/immunology
- Uterine Cervical Neoplasms/virology
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Affiliation(s)
- Xueer Zhao
- German Cancer Research Center, Heidelberg, Germany
| | - Fan Yang
- German Cancer Research Center, Heidelberg, Germany
| | - Filipe Mariz
- German Cancer Research Center, Heidelberg, Germany
| | - Wolfram Osen
- German Cancer Research Center, Heidelberg, Germany
| | - Angelo Bolchi
- Department of Chemical Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Simone Ottonello
- Department of Chemical Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Martin Müller
- German Cancer Research Center, Heidelberg, Germany
- * E-mail:
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20
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Zottig X, Côté-Cyr M, Arpin D, Archambault D, Bourgault S. Protein Supramolecular Structures: From Self-Assembly to Nanovaccine Design. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1008. [PMID: 32466176 PMCID: PMC7281494 DOI: 10.3390/nano10051008] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/18/2020] [Accepted: 05/20/2020] [Indexed: 12/19/2022]
Abstract
Life-inspired protein supramolecular assemblies have recently attracted considerable attention for the development of next-generation vaccines to fight against infectious diseases, as well as autoimmune diseases and cancer. Protein self-assembly enables atomic scale precision over the final architecture, with a remarkable diversity of structures and functionalities. Self-assembling protein nanovaccines are associated with numerous advantages, including biocompatibility, stability, molecular specificity and multivalency. Owing to their nanoscale size, proteinaceous nature, symmetrical organization and repetitive antigen display, protein assemblies closely mimic most invading pathogens, serving as danger signals for the immune system. Elucidating how the structural and physicochemical properties of the assemblies modulate the potency and the polarization of the immune responses is critical for bottom-up design of vaccines. In this context, this review briefly covers the fundamentals of supramolecular interactions involved in protein self-assembly and presents the strategies to design and functionalize these assemblies. Examples of advanced nanovaccines are presented, and properties of protein supramolecular structures enabling modulation of the immune responses are discussed. Combining the understanding of the self-assembly process at the molecular level with knowledge regarding the activation of the innate and adaptive immune responses will support the design of safe and effective nanovaccines.
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Affiliation(s)
- Ximena Zottig
- Department of Chemistry, Université du Québec à Montréal, Montreal, QC H2L 2C4, Canada; (X.Z.); (M.C.-C.); (D.A.)
- The Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO, Quebec, QC G1V 0A6, Canada
- The Swine and Poultry Infectious Diseases Research Centre, CRIPA, Saint-Hyacinthe, QC J2S 2M2, Canada
| | - Mélanie Côté-Cyr
- Department of Chemistry, Université du Québec à Montréal, Montreal, QC H2L 2C4, Canada; (X.Z.); (M.C.-C.); (D.A.)
- The Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO, Quebec, QC G1V 0A6, Canada
- The Swine and Poultry Infectious Diseases Research Centre, CRIPA, Saint-Hyacinthe, QC J2S 2M2, Canada
| | - Dominic Arpin
- Department of Chemistry, Université du Québec à Montréal, Montreal, QC H2L 2C4, Canada; (X.Z.); (M.C.-C.); (D.A.)
- The Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO, Quebec, QC G1V 0A6, Canada
- The Swine and Poultry Infectious Diseases Research Centre, CRIPA, Saint-Hyacinthe, QC J2S 2M2, Canada
| | - Denis Archambault
- The Swine and Poultry Infectious Diseases Research Centre, CRIPA, Saint-Hyacinthe, QC J2S 2M2, Canada
- Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC H2L 2C4, Canada
| | - Steve Bourgault
- Department of Chemistry, Université du Québec à Montréal, Montreal, QC H2L 2C4, Canada; (X.Z.); (M.C.-C.); (D.A.)
- The Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO, Quebec, QC G1V 0A6, Canada
- The Swine and Poultry Infectious Diseases Research Centre, CRIPA, Saint-Hyacinthe, QC J2S 2M2, Canada
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21
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Effect of vaccination with a novel GnRH-based immunocontraceptive on immune responses and fertility in rats. Heliyon 2020; 6:e03781. [PMID: 32322739 PMCID: PMC7170952 DOI: 10.1016/j.heliyon.2020.e03781] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/26/2019] [Accepted: 04/09/2020] [Indexed: 12/03/2022] Open
Abstract
1. As human-wildlife conflicts increase worldwide, novel methods are required for mitigating these conflicts. Fertility control, based on immunocontraceptives, has emerged as an alternative option to lethal methods for managing wildlife. 2. Immunocontraceptives are vaccines that generate an immune response to key components of an animal's reproductive system. Some of these vaccines target the gonadotropin-releasing hormone (GnRH) and have been used successfully as contraceptives for many wildlife species. However, the need to capture animals for treatment limits the field applications of injectable vaccines. The availability of orally delivered immunocontraceptives would increase the breadth of applications of fertility control for wildlife management. 3. This study explored a new approach to developing an oral immunocontraceptive, exploiting the bioadhesive and immunologically active properties of killed Mycobacterium avium cell wall fragments (MAF). The MAF was conjugated to a GnRH recombinant protein called IMX294, used as a GnRH-specific immunogen. 4. An initial trial using the MAF-IMX294 conjugate provided the first evidence that an orally delivered immunocontraceptive vaccine could generate anti-GnRH antibody titres in laboratory rats. 5. Increasing the dose and frequency of vaccine administered to rats, in a second trial, enhanced the immune response, eliciting titres that reduced the proportion of females giving birth. This provided the first evidence of the contraceptive effect of an oral anti-GnRH vaccine. 6. Future work is required to further increase the immunogenic effect of the oral vaccine and to establish a dosing schedule that is effective for practical field applications.
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22
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Islam MM, Miura S, Hasan MN, Rahman N, Kuroda Y. Anti-Dengue ED3 Long-Term Immune Response With T-Cell Memory Generated Using Solubility Controlling Peptide Tags. Front Immunol 2020; 11:333. [PMID: 32256488 PMCID: PMC7089932 DOI: 10.3389/fimmu.2020.00333] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 02/10/2020] [Indexed: 12/23/2022] Open
Abstract
Recombinant proteins are an attractive choice as a safe alternative to traditional live attenuated vaccines. However, most small-size proteins are poorly immunogenic, and adjuvants, whose mode of action remain to be fully clarified, are needed for increasing their immunogenicity. Here, we report the effects of short solubility controlling peptide tags (SCP-tags) on the immunogenicity of DENV3 envelope protein domain 3 (3ED3; 103 residues, 11.46 kDa) in ICR and Swiss albino model mice. The attachment of a 4-Ile SCP-tag (C4I-tag) increased the hydrodynamic radius of 3ED3 from 2.2 ± 0.09 to 111 ± 146 nm as assessed by dynamic light scattering in phosphate buffered saline at 37°C, indicating that the C4I-tag oligomerized 3ED3. Immunization at 30 μg/dose showed that the untagged 3ED3 was not or poorly immunogenic, whereas the C4I-tag increased its immunogenicity by up to 39-fold as assessed by the IgG level measured using ELISA. Moreover, the increased antibody level was sustained for over 6 months after immunization and a high number of effector and central memory T cells were generated. These observations provide solid and quantitative evidence for the hypothesis that subvisible aggregates with hydrodynamic radii of 100 nm can increase immunogenicity and that SCP-tag can establish a long-term, target-specific immune response in a way adequate for the development of a peptide/protein-based DENV vaccine.
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Affiliation(s)
- Mohammad M Islam
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan.,Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - Shiho Miura
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Mohammad N Hasan
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - Nafsoon Rahman
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Yutaka Kuroda
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan
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23
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Neukirch L, Fougeroux C, Andersson AMC, Holst PJ. The potential of adenoviral vaccine vectors with altered antigen presentation capabilities. Expert Rev Vaccines 2020; 19:25-41. [PMID: 31889453 DOI: 10.1080/14760584.2020.1711054] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Introduction: Despite their appeal as vaccine vectors, adenoviral vectors are yet unable to induce protective immune responses against some weakly immunogenic antigens. Additionally, the maximum doses of adenovirus-based vaccines are limited by vector-induced toxicity, causing vector elimination and diminished immune responses against the target antigen. In order to increase immune responses to the transgene, while maintaining a moderate vector dose, new technologies for improved transgene presentation have been developed for adenoviral vaccine vectors.Areas covered: This review provides an overview of different genetic-fusion adjuvants that aim to improve antigen presentation in the context of adenoviral vector-based vaccines. The influence on both T cell and B cell responses are discussed, with a main focus on two technologies: MHC class II-associated invariant chain and virus-like-vaccines.Expert opinion: Different strategies have been tested to improve adenovirus-based vaccinations with varying degrees of success. The reviewed genetic adjuvants were designed to increase antigen processing and MHC presentation, or promote humoral immune responses with an improved conformational antigen display. While none of the introduced technologies is universally applicable, this review shall give an overview to identify potential improvements for future vaccination approaches.
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Affiliation(s)
- Lasse Neukirch
- Clinical Cooperation Unit "Applied Tumor Immunity", National Center for Tumor Diseases and German Cancer Research Center, Heidelberg, Germany.,Center for Medical Parasitology, Department of International Health, Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Cyrielle Fougeroux
- Center for Medical Parasitology, Department of International Health, Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Anne-Marie Carola Andersson
- Center for Medical Parasitology, Department of International Health, Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark.,InProTher ApS, Copenhagen, Denmark
| | - Peter Johannes Holst
- Center for Medical Parasitology, Department of International Health, Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark.,InProTher ApS, Copenhagen, Denmark
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24
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Thomas OS, Weber W. Overcoming Physiological Barriers to Nanoparticle Delivery-Are We There Yet? Front Bioeng Biotechnol 2019; 7:415. [PMID: 31921819 PMCID: PMC6928054 DOI: 10.3389/fbioe.2019.00415] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 11/29/2019] [Indexed: 12/19/2022] Open
Abstract
The exploitation of nanosized materials for the delivery of therapeutic agents is already a clinical reality and still holds unrealized potential for the treatment of a variety of diseases. This review discusses physiological barriers a nanocarrier must overcome in order to reach its target, with an emphasis on cancer nanomedicine. Stages of delivery include residence in the blood stream, passive accumulation by virtue of the enhanced permeability and retention effect, diffusion within the tumor lesion, cellular uptake, and arrival at the site of action. We also briefly outline strategies for engineering nanoparticles to more efficiently overcome these challenges: Increasing circulation half-life by shielding with hydrophilic polymers, such as PEG, the limitations of PEG and potential alternatives, targeting and controlled activation approaches. Future developments in these areas will allow us to harness the full potential of nanomedicine.
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Affiliation(s)
- Oliver S. Thomas
- Faculty of Biology, University of Freiburg, Freiburg, Germany
- Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Freiburg, Germany
- Spemann Graduate School of Biology and Medicine, University of Freiburg, Freiburg, Germany
| | - Wilfried Weber
- Faculty of Biology, University of Freiburg, Freiburg, Germany
- Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Freiburg, Germany
- Spemann Graduate School of Biology and Medicine, University of Freiburg, Freiburg, Germany
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25
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Parks KR, MacCamy AJ, Trichka J, Gray M, Weidle C, Borst AJ, Khechaduri A, Takushi B, Agrawal P, Guenaga J, Wyatt RT, Coler R, Seaman M, LaBranche C, Montefiori DC, Veesler D, Pancera M, McGuire A, Stamatatos L. Overcoming Steric Restrictions of VRC01 HIV-1 Neutralizing Antibodies through Immunization. Cell Rep 2019; 29:3060-3072.e7. [PMID: 31801073 PMCID: PMC6936959 DOI: 10.1016/j.celrep.2019.10.071] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/20/2019] [Accepted: 10/17/2019] [Indexed: 12/14/2022] Open
Abstract
Broadly HIV-1 neutralizing VRC01 class antibodies target the CD4-binding site of Env. They are derived from VH1-2∗02 antibody heavy chains paired with rare light chains expressing 5-amino acid-long CDRL3s. They have been isolated from infected subjects but have not yet been elicited by immunization. Env-derived immunogens capable of binding the germline forms of VRC01 B cell receptors on naive B cells have been designed and evaluated in knockin mice. However, the elicited antibodies cannot bypass glycans present on the conserved position N276 of Env, which restricts access to the CD4-binding site. Efforts to guide the appropriate maturation of these antibodies by sequential immunization have not yet been successful. Here, we report on a two-step immunization scheme that leads to the maturation of VRC01-like antibodies capable of accommodating the N276 glycan and displaying autologous tier 2 neutralizing activities. Our results are relevant to clinical trials aiming to elicit VRC01 antibodies.
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Affiliation(s)
- K Rachael Parks
- Vaccines and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA; Department of Global Health, University of Washington, Seattle, WA, USA
| | - Anna J MacCamy
- Vaccines and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Josephine Trichka
- Vaccines and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Matthew Gray
- Vaccines and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Connor Weidle
- Vaccines and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Andrew J Borst
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Arineh Khechaduri
- Vaccines and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Brittany Takushi
- Vaccines and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Parul Agrawal
- Vaccines and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Javier Guenaga
- IAVI Neutralizing Antibody Center, Department of Immunology and Microbiology, The Scripps Research Institute, San Diego, CA, USA
| | - Richard T Wyatt
- IAVI Neutralizing Antibody Center, Department of Immunology and Microbiology, The Scripps Research Institute, San Diego, CA, USA
| | - Rhea Coler
- Department of Global Health, University of Washington, Seattle, WA, USA; Infectious Disease Research Institute, Seattle, WA, USA
| | - Michael Seaman
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Celia LaBranche
- Laboratory for AIDS Vaccine Research and Development, Duke University, Durham, NC, USA
| | - David C Montefiori
- Laboratory for AIDS Vaccine Research and Development, Duke University, Durham, NC, USA
| | - David Veesler
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Marie Pancera
- Vaccines and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA; Vaccine Research Center, National Institutes of Allergy and Infectious Diseases, NIH, Bethesda, MD, USA.
| | - Andrew McGuire
- Vaccines and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA; Department of Global Health, University of Washington, Seattle, WA, USA.
| | - Leonidas Stamatatos
- Vaccines and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA; Department of Global Health, University of Washington, Seattle, WA, USA.
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26
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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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27
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Dosenovic P, Pettersson AK, Wall A, Thientosapol ES, Feng J, Weidle C, Bhullar K, Kara EE, Hartweger H, Pai JA, Gray MD, Parks KR, Taylor JJ, Pancera M, Stamatatos L, Nussenzweig MC, McGuire AT. Anti-idiotypic antibodies elicit anti-HIV-1-specific B cell responses. J Exp Med 2019; 216:2316-2330. [PMID: 31345931 PMCID: PMC6780999 DOI: 10.1084/jem.20190446] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 05/29/2019] [Accepted: 06/24/2019] [Indexed: 12/23/2022] Open
Abstract
Human anti-HIV-1 broadly neutralizing antibodies (bNAbs) protect against infection in animal models. However, bNAbs have not been elicited by vaccination in diverse wild-type animals or humans, in part because B cells expressing the precursors of these antibodies do not recognize most HIV-1 envelopes (Envs). Immunogens have been designed that activate these B cell precursors in vivo, but they also activate competing off-target responses. Here we report on a complementary approach to expand specific B cells using an anti-idiotypic antibody, iv8, that selects for naive human B cells expressing immunoglobulin light chains with 5-amino acid complementarity determining region 3s, a key feature of anti-CD4 binding site (CD4bs)-specific VRC01-class antibodies. In mice, iv8 induced target cells to expand and mature in the context of a polyclonal immune system and produced serologic responses targeting the CD4bs on Env. In summary, the results demonstrate that an anti-idiotypic antibody can specifically recognize and expand rare B cells that express VRC01-class antibodies against HIV-1.
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Affiliation(s)
- Pia Dosenovic
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY
| | | | - Abigail Wall
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Eddy S Thientosapol
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY
| | - Junli Feng
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Connor Weidle
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Komal Bhullar
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY
| | - Ervin E Kara
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY
| | - Harald Hartweger
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY
| | - Joy A Pai
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY
| | - Matthew D Gray
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - K Rachael Parks
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA.,University of Washington University of Washington, Department of Global Health, Seattle, WA
| | - Justin J Taylor
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA.,University of Washington University of Washington, Department of Global Health, Seattle, WA.,University of Washington University of Washington, Department of Immunology, Seattle, WA
| | - Marie Pancera
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Leonidas Stamatatos
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA .,University of Washington University of Washington, Department of Global Health, Seattle, WA
| | - Michel C Nussenzweig
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY .,Howard Hughes Medical Institute, Chevy Chase, MD
| | - Andrew T McGuire
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA .,University of Washington University of Washington, Department of Global Health, Seattle, WA
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28
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Bancroft T, DeBuysscher BL, Weidle C, Schwartz A, Wall A, Gray MD, Feng J, Steach HR, Fitzpatrick KS, Gewe MM, Skog PD, Doyle-Cooper C, Ota T, Strong RK, Nemazee D, Pancera M, Stamatatos L, McGuire AT, Taylor JJ. Detection and activation of HIV broadly neutralizing antibody precursor B cells using anti-idiotypes. J Exp Med 2019; 216:2331-2347. [PMID: 31345930 PMCID: PMC6780997 DOI: 10.1084/jem.20190164] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 04/29/2019] [Accepted: 06/25/2019] [Indexed: 01/01/2023] Open
Abstract
Many tested vaccines fail to provide protection against disease despite the induction of antibodies that bind the pathogen of interest. In light of this, there is much interest in rationally designed subunit vaccines that direct the antibody response to protective epitopes. Here, we produced a panel of anti-idiotype antibodies able to specifically recognize the inferred germline version of the human immunodeficiency virus 1 (HIV-1) broadly neutralizing antibody b12 (iglb12). We determined the crystal structure of two anti-idiotypes in complex with iglb12 and used these anti-idiotypes to identify rare naive human B cells expressing B cell receptors with similarity to iglb12. Immunization with a multimerized version of this anti-idiotype induced the proliferation of transgenic murine B cells expressing the iglb12 heavy chain in vivo, despite the presence of deletion and anergy within this population. Together, our data indicate that anti-idiotypes are a valuable tool for the study and induction of potentially protective antibodies.
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Affiliation(s)
- Tara Bancroft
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Blair L DeBuysscher
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Connor Weidle
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Allison Schwartz
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Abigail Wall
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Matthew D Gray
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Junli Feng
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Holly R Steach
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Kristin S Fitzpatrick
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Mesfin M Gewe
- Basic Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Patrick D Skog
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA
| | - Colleen Doyle-Cooper
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA
| | - Takayuki Ota
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA
| | - Roland K Strong
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - David Nemazee
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA
| | - Marie Pancera
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Leonidas Stamatatos
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA .,Department of Global Health, University of Washington, Seattle, WA
| | - Andrew T McGuire
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA .,Department of Global Health, University of Washington, Seattle, WA
| | - Justin J Taylor
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA .,Department of Global Health, University of Washington, Seattle, WA.,Department of Immunology, University of Washington, Seattle, WA
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29
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Masavuli MG, Wijesundara DK, Underwood A, Christiansen D, Earnest-Silveira L, Bull R, Torresi J, Gowans EJ, Grubor-Bauk B. A Hepatitis C Virus DNA Vaccine Encoding a Secreted, Oligomerized Form of Envelope Proteins Is Highly Immunogenic and Elicits Neutralizing Antibodies in Vaccinated Mice. Front Immunol 2019; 10:1145. [PMID: 31178869 PMCID: PMC6543710 DOI: 10.3389/fimmu.2019.01145] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 05/07/2019] [Indexed: 12/24/2022] Open
Abstract
Hepatitis C virus (HCV) persistently infects approximately 71 million people globally. To prevent infection a vaccine which elicits neutralizing antibodies against the virus envelope proteins (E1/E2) which are required for entry into host cells is desirable. DNA vaccines are cost-effective to manufacture globally and despite recent landmark studies highlighting the therapeutic efficacy of DNA vaccines in humans against cervical cancer, DNA vaccines encoding E1/E2 developed thus far are poorly immunogenic. We now report a novel and highly immunogenic DNA vaccination strategy that incorporates secreted E1 and E2 (sE1 and sE2) into oligomers by fusion with the oligomerization domain of the C4b-binding protein, IMX313P. The FDA approved plasmid, pVax, was used to encode sE1, sE2, or sE1E2 with or without IMX313P, and intradermal prime-boost vaccination studies in BALB/c mice showed that vaccines encoding IMX313P were the most effective in eliciting humoral and cell-mediated immunity against the envelope proteins. Further boosting with recombinant E1E2 proteins but not DNA nor virus-like particles (VLPs) expressing E1E2 increased the immunogenicity of the DNA prime-boost regimen. Nevertheless, the antibodies generated by the homologous DNA prime-boost vaccinations more effectively inhibited the binding of VLPs to target cells and neutralized transduction with HCV pseudoparticles (HCVpp) derived from different genotypes including genotypes 1, 2, 3, 4, 5, and 6. This report provides the first evidence that IMX313P can be used as an adjuvant for E1/E2-based DNA vaccines and represents a translatable approach for the development of a HCV DNA vaccine.
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Affiliation(s)
- Makutiro Ghislain Masavuli
- Virology Laboratory, Basil Hetzel Institute for Translational Medicine, Discipline of Surgery, University of Adelaide, Adelaide, SA, Australia
| | - Danushka K Wijesundara
- Virology Laboratory, Basil Hetzel Institute for Translational Medicine, Discipline of Surgery, University of Adelaide, Adelaide, SA, Australia
| | - Alexander Underwood
- Faculty of Medicine, The Kirby Institute, School of Medical Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Dale Christiansen
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, VIC, Australia
| | - Linda Earnest-Silveira
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, VIC, Australia
| | - Rowena Bull
- Faculty of Medicine, The Kirby Institute, School of Medical Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Joseph Torresi
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, VIC, Australia
| | - Eric J Gowans
- Virology Laboratory, Basil Hetzel Institute for Translational Medicine, Discipline of Surgery, University of Adelaide, Adelaide, SA, Australia
| | - Branka Grubor-Bauk
- Virology Laboratory, Basil Hetzel Institute for Translational Medicine, Discipline of Surgery, University of Adelaide, Adelaide, SA, Australia
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30
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Shrestha AC, Wijesundara DK, Masavuli MG, Mekonnen ZA, Gowans EJ, Grubor-Bauk B. Cytolytic Perforin as an Adjuvant to Enhance the Immunogenicity of DNA Vaccines. Vaccines (Basel) 2019; 7:vaccines7020038. [PMID: 31052178 PMCID: PMC6630607 DOI: 10.3390/vaccines7020038] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 04/19/2019] [Accepted: 04/25/2019] [Indexed: 12/21/2022] Open
Abstract
DNA vaccines present one of the most cost-effective platforms to develop global vaccines, which have been tested for nearly three decades in preclinical and clinical settings with some success in the clinic. However, one of the major challenges for the development of DNA vaccines is their poor immunogenicity in humans, which has led to refinements in DNA delivery, dosage in prime/boost regimens and the inclusion of adjuvants to enhance their immunogenicity. In this review, we focus on adjuvants that can enhance the immunogenicity of DNA encoded antigens and highlight the development of a novel cytolytic DNA platform encoding a truncated mouse perforin. The application of this innovative DNA technology has considerable potential in the development of effective vaccines.
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Affiliation(s)
- Ashish C Shrestha
- Virology Laboratory, Discipline of Surgery, Basil Hetzel Institute for Translational Health Research and University of Adelaide, Adelaide 5011, Australia.
| | - Danushka K Wijesundara
- Virology Laboratory, Discipline of Surgery, Basil Hetzel Institute for Translational Health Research and University of Adelaide, Adelaide 5011, Australia.
| | - Makutiro G Masavuli
- Virology Laboratory, Discipline of Surgery, Basil Hetzel Institute for Translational Health Research and University of Adelaide, Adelaide 5011, Australia.
| | - Zelalem A Mekonnen
- Virology Laboratory, Discipline of Surgery, Basil Hetzel Institute for Translational Health Research and University of Adelaide, Adelaide 5011, Australia.
| | - Eric J Gowans
- Virology Laboratory, Discipline of Surgery, Basil Hetzel Institute for Translational Health Research and University of Adelaide, Adelaide 5011, Australia.
| | - Branka Grubor-Bauk
- Virology Laboratory, Discipline of Surgery, Basil Hetzel Institute for Translational Health Research and University of Adelaide, Adelaide 5011, Australia.
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Khairil Anuar INA, Banerjee A, Keeble AH, Carella A, Nikov GI, Howarth M. Spy&Go purification of SpyTag-proteins using pseudo-SpyCatcher to access an oligomerization toolbox. Nat Commun 2019; 10:1734. [PMID: 30988307 PMCID: PMC6465384 DOI: 10.1038/s41467-019-09678-w] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 03/22/2019] [Indexed: 12/14/2022] Open
Abstract
Peptide tags are a key resource, introducing minimal change while enabling a consistent process to purify diverse proteins. However, peptide tags often provide minimal benefit post-purification. We previously designed SpyTag, forming an irreversible bond with its protein partner SpyCatcher. SpyTag provides an easy route to anchor, bridge or multimerize proteins. Here we establish Spy&Go, enabling protein purification using SpyTag. Through rational engineering we generated SpyDock, which captures SpyTag-fusions and allows efficient elution. Spy&Go enabled sensitive purification of SpyTag-fusions from Escherichia coli, giving superior purity than His-tag/nickel-nitrilotriacetic acid. Spy&Go allowed purification of mammalian-expressed, N-terminal, C-terminal or internal SpyTag. As an oligomerization toolbox, we established a panel of SpyCatcher-linked coiled coils, so SpyTag-fusions can be dimerized, trimerized, tetramerized, pentamerized, hexamerized or heptamerized. Assembling oligomers for Death Receptor 5 stimulation, we probed multivalency effects on cancer cell death. Spy&Go, combined with simple oligomerization, should have broad application for exploring multivalency in signaling.
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Affiliation(s)
| | - Anusuya Banerjee
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Anthony H Keeble
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Alberto Carella
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Georgi I Nikov
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Mark Howarth
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK.
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Shao S, Sun X, Chen Y, Zhan B, Zhu X. Complement Evasion: An Effective Strategy That Parasites Utilize to Survive in the Host. Front Microbiol 2019; 10:532. [PMID: 30949145 PMCID: PMC6435963 DOI: 10.3389/fmicb.2019.00532] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 03/01/2019] [Indexed: 12/15/2022] Open
Abstract
Parasitic infections induce host immune responses that eliminate the invading parasites. However, parasites have evolved to develop many strategies to evade host immune attacks and survive in a hostile environment. The complement system acts as the first line of immune defense to eliminate the invading parasites by forming the membrane attack complex (MAC) and promoting an inflammatory reaction on the surface of invading parasites. To date, the complement activation pathway has been precisely delineated; however, the manner in which parasites escape complement attack, as a survival strategy in the host, is not well understood. Increasing evidence has shown that parasites develop sophisticated strategies to escape complement-mediated killing, including (i) recruitment of host complement regulatory proteins on the surface of the parasites to inhibit complement activation; (ii) expression of orthologs of host RCA to inhibit complement activation; and (iii) expression of parasite-encoded proteins, specifically targeting different complement components, to inhibit complement function and formation of the MAC. In this review, we compiled information regarding parasitic abilities to escape host complement attack as a survival strategy in the hostile environment of the host and the mechanisms underlying complement evasion. Effective escape of host complement attack is a crucial step for the survival of parasites within the host. Therefore, those proteins expressed by parasites and involved in the regulation of the complement system have become important targets for the development of drugs and vaccines against parasitic infections.
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Affiliation(s)
- Shuai Shao
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Ximeng Sun
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Yi Chen
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Bin Zhan
- Department of Pediatrics, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, United States
| | - Xinping Zhu
- Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
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Andersson AMC, Buldun CM, Pattinson DJ, Draper SJ, Howarth M. SnoopLigase peptide-peptide conjugation enables modular vaccine assembly. Sci Rep 2019; 9:4625. [PMID: 30874593 PMCID: PMC6420506 DOI: 10.1038/s41598-019-40985-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 02/11/2019] [Indexed: 02/06/2023] Open
Abstract
For many infectious diseases there is still no vaccine, even though potential protective antigens have been identified. Suitable platforms and conjugation routes are urgently needed to convert the promise of such antigens into broadly protective and scalable vaccines. Here we apply a newly established peptide-peptide ligation approach, SnoopLigase, for specific and irreversible coupling of antigens onto an oligomerization platform. SnoopLigase was engineered from a Streptococcus pneumoniae adhesin and enables isopeptide bond formation between two peptide tags: DogTag and SnoopTagJr. We expressed in bacteria DogTag linked to the self-assembling coiled-coil nanoparticle IMX313. This platform was stable over months at 37 °C when lyophilized, remaining reactive even after boiling. IMX-DogTag was efficiently coupled to two blood-stage malarial proteins (from PfEMP1 or CyRPA), with SnoopTagJr fused at the N- or C-terminus. We also showed SnoopLigase-mediated coupling of a telomerase peptide relevant to cancer immunotherapy. SnoopLigase-mediated nanoassembly enhanced the antibody response to both malaria antigens in a prime-boost model. Including or depleting SnoopLigase from the conjugate had little effect on the antibody response to the malarial antigens. SnoopLigase decoration represents a promising and accessible strategy for modular plug-and-display vaccine assembly, as well as providing opportunities for robust nanoconstruction in synthetic biology.
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Affiliation(s)
| | - Can M Buldun
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | | | - Simon J Draper
- Jenner Institute, University of Oxford, Oxford, OX3 7DQ, UK
| | - Mark Howarth
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK.
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34
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Del Campo J, Pizzorno A, Djebali S, Bouley J, Haller M, Pérez-Vargas J, Lina B, Boivin G, Hamelin ME, Nicolas F, Le Vert A, Leverrier Y, Rosa-Calatrava M, Marvel J, Hill F. OVX836 a recombinant nucleoprotein vaccine inducing cellular responses and protective efficacy against multiple influenza A subtypes. NPJ Vaccines 2019; 4:4. [PMID: 30701093 PMCID: PMC6344521 DOI: 10.1038/s41541-019-0098-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 12/21/2018] [Indexed: 11/18/2022] Open
Abstract
Inactivated influenza vaccines (IIVs) lack broad efficacy. Cellular immunity to a conserved internal antigen, the nucleoprotein (NP), has been correlated to protection against pandemic and seasonal influenza and thus could have the potential to broaden vaccine efficacy. We developed OVX836, a recombinant protein vaccine based on an oligomerized NP, which shows increased uptake by dendritic cells and immunogenicity compared with NP. Intramuscular immunization in mice with OVX836 induced strong NP-specific CD4+ and CD8+ T-cell systemic responses and established CD8+ tissue memory T cells in the lung parenchyma. Strikingly, OVX836 protected mice against viral challenge with three different influenza A subtypes, isolated several decades apart and induced a reduction in viral load. When co-administered with IIV, OVX836 was even more effective in reducing lung viral load. Circulating influenza A virus (IAV) strains differ in their surface proteins each year, and vaccines eliciting an immune response to these proteins are often only partially protective. Internal viral proteins, such as the nucleoprotein (NP), are highly conserved, and cellular immunity to NP has been correlated with protection from diverse strains. However, current IAV vaccines induce a poor immune response to NP. In this study, led by Fergal Hill from Osivax, researchers develop an oligomeric version of NP with improved immunogenicity. Vaccination of mice with oligomeric NP results in an improved NP-specific T-cell response, including CD8+ tissue memory T cells in the lung, and protects mice against three different IAV subtypes. Co-administration with the currently used inactivated influenza vaccine further improves protection against virus infection in mice. These results encourage further pre-clinical and clinical development for this vaccine candidate.
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Affiliation(s)
| | - Andres Pizzorno
- 2Virologie et Pathologie Humaine - VirPath Team, Centre International de Recherche en Infectiologie, INSERM U1111, CNRS UMR5308, École Normale Supérieure de Lyon, Université Claude Bernard Lyon 1. Université de Lyon, Lyon, F- 69008 France
| | - Sophia Djebali
- 3Immunity and Cytotoxic Lymphocytes, Centre International de Recherche en Infectiologie, INSERM, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, École Normale Supérieure de Lyon. Université de Lyon, F-69007 Lyon, France
| | | | | | - Jimena Pérez-Vargas
- Osivax, 99, rue de Gerland, 69007 Lyon, France.,6Present Address: Enveloped Viruses, Vectors and Immunotherapy Team, Centre International de Recherché en Infectiologie (CIRI), INSERM U1111, Université de Lyon, Lyon, France
| | - Bruno Lina
- 2Virologie et Pathologie Humaine - VirPath Team, Centre International de Recherche en Infectiologie, INSERM U1111, CNRS UMR5308, École Normale Supérieure de Lyon, Université Claude Bernard Lyon 1. Université de Lyon, Lyon, F- 69008 France.,Hospices Civils de Lyon, Centre National de Référence des Virus Influenza France Sud, Laboratoire de Virologie, Groupement Hospitalier Nord, Lyon, France
| | - Guy Boivin
- 5Centre de Recherche en Infectiologie of the Centre Hospitalier Universitaire de Québec and Université Laval, Québec, Canada
| | - Marie-Eve Hamelin
- 5Centre de Recherche en Infectiologie of the Centre Hospitalier Universitaire de Québec and Université Laval, Québec, Canada
| | | | | | - Yann Leverrier
- 3Immunity and Cytotoxic Lymphocytes, Centre International de Recherche en Infectiologie, INSERM, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, École Normale Supérieure de Lyon. Université de Lyon, F-69007 Lyon, France
| | - Manuel Rosa-Calatrava
- 2Virologie et Pathologie Humaine - VirPath Team, Centre International de Recherche en Infectiologie, INSERM U1111, CNRS UMR5308, École Normale Supérieure de Lyon, Université Claude Bernard Lyon 1. Université de Lyon, Lyon, F- 69008 France
| | - Jacqueline Marvel
- 3Immunity and Cytotoxic Lymphocytes, Centre International de Recherche en Infectiologie, INSERM, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, École Normale Supérieure de Lyon. Université de Lyon, F-69007 Lyon, France
| | - Fergal Hill
- Osivax, 99, rue de Gerland, 69007 Lyon, France
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35
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Halbroth BR, Sebastian S, Poyntz HC, Bregu M, Cottingham MG, Hill AVS, Spencer AJ. Development of a Molecular Adjuvant to Enhance Antigen-Specific CD8 + T Cell Responses. Sci Rep 2018; 8:15020. [PMID: 30301933 PMCID: PMC6177389 DOI: 10.1038/s41598-018-33375-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 09/27/2018] [Indexed: 12/26/2022] Open
Abstract
Despite promising progress in malaria vaccine development, an efficacious subunit vaccine against P. falciparum remains to be licensed and deployed. This study aimed to improve on the immunogenicity of the leading liver-stage vaccine candidate (ChAd63-MVA ME-TRAP), known to confer protection by eliciting high levels of antigen-specific CD8+ T cells. We previously showed fusion of ME-TRAP to the human MHC class II invariant chain (Ii) could enhance CD8+ T cell responses in non-human primates, but did not progress to clinical testing due to potential risk of auto-immunity by vaccination of humans with a self-antigen. Initial immunogenicity analyses of ME-TRAP fused to subdomains of the Ii showed that the Ii transmembrane domain alone can enhance CD8+ T cell responses. Subsequently, truncated Ii sequences with low homology to human Ii were developed and shown to enhance CD8+ T cell responses. By systematically mutating the TM domain sequence, multimerization of the Ii chain was shown to be important for immune enhancement. We subsequently identified several proteins from a variety of microbial pathogens with similar characteristics, that also enhance the CD8+ T cell response and could therefore be used in viral vector vaccines when potent cell mediated immunity is required.
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Affiliation(s)
- Benedict R Halbroth
- The Jenner Institute, University of Oxford, ORCRB, Roosevelt Drive, Oxford, United Kingdom.
| | - Sarah Sebastian
- The Jenner Institute, University of Oxford, ORCRB, Roosevelt Drive, Oxford, United Kingdom
| | - Hazel C Poyntz
- The Jenner Institute, University of Oxford, ORCRB, Roosevelt Drive, Oxford, United Kingdom
| | - Migena Bregu
- The Jenner Institute, University of Oxford, ORCRB, Roosevelt Drive, Oxford, United Kingdom
| | - Matthew G Cottingham
- The Jenner Institute, University of Oxford, ORCRB, Roosevelt Drive, Oxford, United Kingdom
| | - Adrian V S Hill
- The Jenner Institute, University of Oxford, ORCRB, Roosevelt Drive, Oxford, United Kingdom
| | - Alexandra J Spencer
- The Jenner Institute, University of Oxford, ORCRB, Roosevelt Drive, Oxford, United Kingdom.
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36
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Gonococcal MtrE and its surface-expressed Loop 2 are immunogenic and elicit bactericidal antibodies. J Infect 2018; 77:191-204. [PMID: 29902495 DOI: 10.1016/j.jinf.2018.06.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 05/29/2018] [Accepted: 06/04/2018] [Indexed: 11/23/2022]
Abstract
OBJECTIVES The rise in multidrug resistant Neisseria gonorrhoeae poses a threat to healthcare, while the development of an effective vaccine has remained elusive due to antigenic and phase variability of surface-expressed proteins. In the current study, we identified a fully conserved surface expressed protein and characterized its suitability as a vaccine antigen. METHODS An in silico approach was used to predict surface-expressed proteins and analyze sequence conservation and phase variability. The most conserved protein and its surface-exposed Loop 2, which was displayed as both a structural and linear epitope on the oligomerization domain of C4b binding protein, were used to immunize mice. Immunogenicity was subsequently analyzed by determination of antibody titers and serum bactericidal activity. RESULTS MtrE was identified as one of the most conserved surface-expressed proteins. Furthermore, MtrE and both Loop 2-containing fusion proteins elicited high protein-specific antibody titers and particularly the two Loop 2 fusion proteins showed high anti-Loop 2 titers. In addition, antibodies raised against all three proteins were able to recognize MtrE expressed on the surface of N. gonorrhoeae and showed high MtrE-dependent bactericidal activity. CONCLUSIONS Our results show that MtrE and Loop 2 are promising novel conserved surface-expressed antigens for vaccine development against N. gonorrhoeae.
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Minor Capsid Protein L2 Polytope Induces Broad Protection against Oncogenic and Mucosal Human Papillomaviruses. J Virol 2018; 92:JVI.01930-17. [PMID: 29212932 DOI: 10.1128/jvi.01930-17] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 11/22/2017] [Indexed: 11/20/2022] Open
Abstract
The amino terminus of the human papillomavirus (HPV) minor capsid protein L2 contains a major cross-neutralization epitope which provides the basis for the development of a broadly protecting HPV vaccine. A wide range of protection against different HPV types would eliminate one of the major drawbacks of the commercial, L1-based prophylactic vaccines. Previously, we have reported that insertion of the L2 epitope into a scaffold composed of bacterial thioredoxin protein generates a potent antigen inducing comprehensive protection against different animal and human papillomaviruses. We also reported, however, that although protection is broad, some oncogenic HPV types escape the neutralizing antibody response, if L2 epitopes from single HPV types are used as immunogen. We were able to compensate for this by applying a mix of thioredoxin proteins carrying L2 epitopes from HPV16, -31, and -51. As the development of a cost-efficient HPV prophylactic vaccines is one of our objectives, this approach is not feasible as it requires the development of multiple good manufacturing production processes in combination with a complex vaccine formulation. Here, we report the development of a thermostable thioredoxin-based single-peptide vaccine carrying an L2 polytope of up to 11 different HPV types. The L2 polytope antigens have excellent abilities in respect to broadness of protection and robustness of induced immune responses. To further increase immunogenicity, we fused the thioredoxin L2 polytope antigen with a heptamerization domain. In the final vaccine design, we achieve protective responses against all 14 oncogenic HPV types that we have analyzed plus the low-risk HPVs 6 and 11 and a number of cutaneous HPVs.IMPORTANCE Infections by a large number of human papillomaviruses lead to malignant and nonmalignant disease. Current commercial vaccines based on virus-like particles (VLPs) effectively protect against some HPV types but fail to do so for most others. Further, only about a third of all countries have access to the VLP vaccines. The minor capsid protein L2 has been shown to contain so-called neutralization epitopes within its N terminus. We designed polytopes comprising the L2 epitope amino acids 20 to 38 of up to 11 different mucosal HPV types and inserted them into the scaffold of thioredoxin derived from a thermophile archaebacterium. The antigen induced neutralizing antibody responses in mice and guinea pigs against 26 mucosal and cutaneous HPV types. Further, addition of a heptamerization domain significantly increased the immunogenicity. The final vaccine design comprising a heptamerized L2 8-mer thioredoxin single-peptide antigen with excellent thermal stability might overcome some of the limitations of the current VLP vaccines.
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38
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Menon V, Kapulu MC, Taylor I, Jewell K, Li Y, Hill F, Long CA, Miura K, Biswas S. Assessment of Antibodies Induced by Multivalent Transmission-Blocking Malaria Vaccines. Front Immunol 2018; 8:1998. [PMID: 29403479 PMCID: PMC5780346 DOI: 10.3389/fimmu.2017.01998] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 12/22/2017] [Indexed: 01/20/2023] Open
Abstract
A malaria transmission-blocking vaccine would be a critical tool in achieving malaria elimination and eradication. By using chimpanzee adenovirus serotype 63 and modified vaccinia virus Ankara viral vectored vaccines, we investigated whether incorporating two antigens into one vaccine would result in higher transmission-reducing activity than one antigen. We demonstrated that when Pfs25 was administered with other antigens Pfs28 or Pfs230C, either concurrently as a mixed vaccine or co-expressed as a dual-antigen vaccine, the antibody response in mice to each antigen was comparable to a monoantigen vaccine, without immunological interference. However, we found that the transmission-reducing activity (functional activity) of dual-antigen vaccines was not additive. Dual-antigen vaccines generally only elicited similar transmission-reducing activity to monoantigen vaccines and in one instance had lower transmission-reducing activity. We found that despite the lack of immunological interference of dual-antigen vaccines, they are still not as effective at blocking malaria transmission as Pfs25-IMX313, the current leading candidate for viral vectored vaccines. Pfs25-IMX313 elicited similar quality antibodies to dual-antigen vaccines, but higher antibody titers.
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Affiliation(s)
- Vinay Menon
- Jenner Institute, University of Oxford, Oxford, United Kingdom
| | | | - Iona Taylor
- Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Kerry Jewell
- Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Yuanyuan Li
- Jenner Institute, University of Oxford, Oxford, United Kingdom
| | | | - Carole A. Long
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, National Institutes of Health, Rockville, MD, United States
| | - Kazutoyo Miura
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, National Institutes of Health, Rockville, MD, United States
| | - Sumi Biswas
- Jenner Institute, University of Oxford, Oxford, United Kingdom
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39
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Broadly neutralizing antiviral responses induced by a single-molecule HPV vaccine based on thermostable thioredoxin-L2 multiepitope nanoparticles. Sci Rep 2017; 7:18000. [PMID: 29269879 PMCID: PMC5740060 DOI: 10.1038/s41598-017-18177-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 12/04/2017] [Indexed: 12/22/2022] Open
Abstract
Vaccines targeting the human papillomavirus (HPV) minor capsid protein L2 are emerging as chemico-physically robust and broadly protective alternatives to the current HPV (L1-VLP) vaccines. We have previously developed a trivalent L2 vaccine prototype exploiting Pyrococcus furiosus thioredoxin (PfTrx) as a thermostable scaffold for the separate presentation of three distinct HPV L2(20–38) epitopes. With the aim of achieving a highly immunogenic, yet simpler and more GMP-production affordable formulation, we report here on a novel thermostable nanoparticle vaccine relying on genetic fusion of PfTrx-L2 with the heptamerizing coiled-coil polypeptide OVX313. A prototype HPV16 monoepitope version of this nanoparticle vaccine (PfTrx-L2-OVX313; median radius: 8.6 ± 1.0 nm) proved to be approximately 10-fold more immunogenic and with a strikingly enhanced cross-neutralization capacity compared to its monomeric counterpart. Vaccine-induced (cross-)neutralizing responses were further potentiated in a multiepitope derivative displaying eight different L2(20–38) epitopes, which elicited neutralizing antibodies against 10 different HPVs including three viral types not represented in the vaccine. Considering the prospective safety of the PfTrx scaffold and of the OVX313 heptamerization module, PfTrx-OVX313 nanoparticles lend themselves as robust L2-based immunogens with a high translational potential as a 3rd generation HPV vaccine, but also as a novel and extremely versatile peptide-antigen presentation platform.
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40
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Brune KD, Buldun CM, Li Y, Taylor IJ, Brod F, Biswas S, Howarth M. Dual Plug-and-Display Synthetic Assembly Using Orthogonal Reactive Proteins for Twin Antigen Immunization. Bioconjug Chem 2017; 28:1544-1551. [PMID: 28437083 DOI: 10.1021/acs.bioconjchem.7b00174] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Engineering modular platforms to control biomolecular architecture can advance both the understanding and the manipulation of biological systems. Icosahedral particles uniformly displaying single antigens stimulate potent immune activation and have been successful in various licensed vaccines. However, it remains challenging to display multiple antigens on a single particle and to induce broader immunity protective across strains or even against distinct diseases. Here, we design a dually addressable synthetic nanoparticle by engineering the multimerizing coiled-coil IMX313 and two orthogonally reactive split proteins. SpyCatcher protein forms an isopeptide bond with SpyTag peptide through spontaneous amidation. SnoopCatcher forms an isopeptide bond with SnoopTag peptide through transamidation. SpyCatcher-IMX-SnoopCatcher provides a modular platform, whereby SpyTag-antigen and SnoopTag-antigen can be multimerized on opposite faces of the particle simply upon mixing. We demonstrate efficient derivatization of the platform with model proteins and complex pathogen-derived antigens. SpyCatcher-IMX-SnoopCatcher was expressed in Escherichia coli and was resilient to lyophilization or extreme temperatures. For the next generation of malaria vaccines, blocking the transmission of the parasite from human to mosquito is an important goal. SpyCatcher-IMX-SnoopCatcher multimerization of the leading transmission-blocking antigens Pfs25 and Pfs28 greatly enhanced the antibody response to both antigens in comparison to the monomeric proteins. This dual plug-and-display architecture should help to accelerate vaccine development for malaria and other diseases.
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Affiliation(s)
- Karl D Brune
- Department of Biochemistry, University of Oxford , South Parks Road, Oxford OX1 3QU, United Kingdom
| | - Can M Buldun
- Department of Biochemistry, University of Oxford , South Parks Road, Oxford OX1 3QU, United Kingdom
| | - Yuanyuan Li
- Jenner Institute, University of Oxford , Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, United Kingdom
| | - Iona J Taylor
- Jenner Institute, University of Oxford , Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, United Kingdom
| | - Florian Brod
- Jenner Institute, University of Oxford , Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, United Kingdom
| | - Sumi Biswas
- Jenner Institute, University of Oxford , Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, United Kingdom
| | - Mark Howarth
- Department of Biochemistry, University of Oxford , South Parks Road, Oxford OX1 3QU, United Kingdom
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Antwi-Baffour S, Adjei JK, Agyemang-Yeboah F, Annani-Akollor M, Kyeremeh R, Asare GA, Gyan B. Proteomic analysis of microparticles isolated from malaria positive blood samples. Proteome Sci 2017; 15:5. [PMID: 28352210 PMCID: PMC5366142 DOI: 10.1186/s12953-017-0113-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 03/17/2017] [Indexed: 01/06/2023] Open
Abstract
Background Malaria continues to be a great public health concern due to the significant mortality and morbidity associated with the disease especially in developing countries. Microparticles (MPs), also called plasma membrane derived extracellular vesicles (PMEVs) are subcellular structures that are generated when they bud off the plasma membrane. They can be found in healthy individuals but the numbers tend to increase in pathological conditions including malaria. Although, various studies have been carried out on the protein content of specific cellular derived MPs, there seems to be paucity of information on the protein content of circulating MPs in malaria and their association with the various signs and symptoms of the disease. The aim of this study was therefore to carry out proteomic analyses of MPs isolated from malaria positive samples and compare them with proteins of MPs from malaria parasite culture supernatant and healthy controls in order to ascertain the role of MPs in malaria infection. Methods Plasma samples were obtained from forty-three (43) malaria diagnosed patients (cases) and ten (10) healthy individuals (controls). Malaria parasite culture supernatant was obtained from our laboratory and MPs were isolated from them and confirmed using flow cytometry. 2D LC-MS was done to obtain their protein content. Resultant data were analyzed using SPSS Ver. 21.0 statistical software, Kruskal Wallis test and Spearman’s correlation coefficient r. Results In all, 1806 proteins were isolated from the samples. The MPs from malaria positive samples recorded 1729 proteins, those from culture supernatant were 333 while the control samples recorded 234 proteins. The mean number of proteins in MPs of malaria positive samples was significantly higher than that in the control samples. Significantly, higher quantities of haemoglobin subunits were seen in MPs from malaria samples and culture supernatant compared to control samples. Conclusion A great number of proteins were observed to be carried in the microparticles (MPs) from malaria samples and culture supernatant compared to controls. The greater loss of haemoglobin from erythrocytes via MPs from malaria patients could serve as the initiation and progression of anaemia in P.falciparum infection. Also while some proteins were upregulated in circulating MPs in malaria samples, others were down regulated.
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Affiliation(s)
- Samuel Antwi-Baffour
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, P. O. Box KB 143, Korle-Bu, Accra, Ghana
| | - Jonathan Kofi Adjei
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, P. O. Box KB 143, Korle-Bu, Accra, Ghana.,Department of Molecular Medicine, School of Medical Sciences Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Francis Agyemang-Yeboah
- Department of Molecular Medicine, School of Medical Sciences Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Max Annani-Akollor
- Department of Molecular Medicine, School of Medical Sciences Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Ransford Kyeremeh
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, P. O. Box KB 143, Korle-Bu, Accra, Ghana
| | - George Awuku Asare
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, P. O. Box KB 143, Korle-Bu, Accra, Ghana
| | - Ben Gyan
- Noguchi Memorial Institute of Medical Research, University of Ghana, Legon, Ghana
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Tomusange K, Wijesundara D, Gummow J, Garrod T, Li Y, Gray L, Churchill M, Grubor-Bauk B, Gowans EJ. A HIV-Tat/C4-binding protein chimera encoded by a DNA vaccine is highly immunogenic and contains acute EcoHIV infection in mice. Sci Rep 2016; 6:29131. [PMID: 27358023 PMCID: PMC4928126 DOI: 10.1038/srep29131] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 06/15/2016] [Indexed: 12/22/2022] Open
Abstract
DNA vaccines are cost-effective to manufacture on a global scale and Tat-based DNA vaccines have yielded protective outcomes in preclinical and clinical models of human immunodeficiency virus (HIV), highlighting the potential of such vaccines. However, Tat-based DNA vaccines have been poorly immunogenic, and despite the administration of multiple doses and/or the addition of adjuvants, these vaccines are not in general use. In this study, we improved Tat immunogenicity by fusing it with the oligomerisation domain of a chimeric C4-binding protein (C4b-p), termed IMX313, resulting in Tat heptamerisation and linked Tat to the leader sequence of tissue plasminogen activator (TPA) to ensure that the bulk of heptamerised Tat is secreted. Mice vaccinated with secreted Tat fused to IMX313 (pVAX-sTat-IMX313) developed higher titres of Tat-specific serum IgG, mucosal sIgA and cell-mediated immune (CMI) responses, and showed superior control of EcoHIV infection, a surrogate murine HIV challenge model, compared with animals vaccinated with other test vaccines. Given the crucial contribution of Tat to HIV-1 pathogenesis and the precedent of Tat-based DNA vaccines in conferring some level of protection in animal models, we believe that the virologic control demonstrated with this novel multimerised Tat vaccine highlights the promise of this vaccine candidate for humans.
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Affiliation(s)
- Khamis Tomusange
- Virology Laboratory, Basil Hetzel Institute, Discipline of Surgery, University of Adelaide, Adelaide, South Australia, Australia
| | - Danushka Wijesundara
- Virology Laboratory, Basil Hetzel Institute, Discipline of Surgery, University of Adelaide, Adelaide, South Australia, Australia
| | - Jason Gummow
- Virology Laboratory, Basil Hetzel Institute, Discipline of Surgery, University of Adelaide, Adelaide, South Australia, Australia
| | - Tamsin Garrod
- Royal Australasian College of Surgeons, Adelaide, South Australia, Australia
| | - Yanrui Li
- Virology Laboratory, Basil Hetzel Institute, Discipline of Surgery, University of Adelaide, Adelaide, South Australia, Australia
| | - Lachlan Gray
- Centre for Biomedical Research, Burnet Institute, Melbourne VIC, Australia
- Department of Infectious Diseases, Monash University, Melbourne VIC, Australia
| | - Melissa Churchill
- Centre for Biomedical Research, Burnet Institute, Melbourne VIC, Australia
| | - Branka Grubor-Bauk
- Virology Laboratory, Basil Hetzel Institute, Discipline of Surgery, University of Adelaide, Adelaide, South Australia, Australia
| | - Eric J. Gowans
- Virology Laboratory, Basil Hetzel Institute, Discipline of Surgery, University of Adelaide, Adelaide, South Australia, Australia
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A first-in-human phase 1 trial to evaluate the safety and immunogenicity of the candidate tuberculosis vaccine MVA85A-IMX313, administered to BCG-vaccinated adults. Vaccine 2016; 34:1412-21. [PMID: 26854906 PMCID: PMC4786162 DOI: 10.1016/j.vaccine.2016.01.062] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 01/12/2016] [Accepted: 01/19/2016] [Indexed: 11/24/2022]
Abstract
INTRODUCTION There is an urgent need for a new and effective tuberculosis vaccine because BCG does not sufficiently prevent pulmonary disease. IMX313 is a novel carrier protein designed to improve cellular and humoral immunity. MVA85A-IMX313 is a novel vaccine candidate designed to boost immunity primed by bacillus Calmette-Guérin (BCG) that has been immunogenic in pre-clinical studies. This is the first evaluation of IMX313 delivered as MVA85A-IMX313 in humans. METHODS In this phase 1, open-label first-in-human trial, 30 healthy previously BCG-vaccinated adults were enrolled into three treatment groups and vaccinated with low dose MVA85A-IMX313 (group A), standard dose MVA85A-IMX313 (group B), or MVA85A (group C). Volunteers were followed up for 6 months for safety and immunogenicity assessment. RESULTS The majority of adverse events were mild and there were no vaccine-related serious AEs. Both MVA85A-IMX313 and MVA85A induced a significant increase in IFN-γ ELISpot responses. There were no significant differences between the Ag85A ELISpot and intracellular cytokine responses between the two study groups B (MVA85A-IMX313) and C (MVA85A) at any time point post-vaccination. CONCLUSION MVA85A-IMX313 was well tolerated and immunogenic. There was no significant difference in the number of vaccine-related, local or systemic adverse reactions between MVA85A and MVA85A-IMX313 groups. The mycobacteria-specific cellular immune responses induced by MVA85A-IMX313 were not significantly different to those detected in the MVA85A group. In light of this encouraging safety data, further work to improve the potency of molecular adjuvants like IMX313 is merited. This trial was registered on clinicatrials.gov ref. NCT01879163.
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Li Y, Leneghan DB, Miura K, Nikolaeva D, Brian IJ, Dicks MDJ, Fyfe AJ, Zakutansky SE, de Cassan S, Long CA, Draper SJ, Hill AVS, Hill F, Biswas S. Enhancing immunogenicity and transmission-blocking activity of malaria vaccines by fusing Pfs25 to IMX313 multimerization technology. Sci Rep 2016; 6:18848. [PMID: 26743316 PMCID: PMC4705524 DOI: 10.1038/srep18848] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 11/27/2015] [Indexed: 01/16/2023] Open
Abstract
Transmission-blocking vaccines (TBV) target the sexual-stages of the malaria parasite in the mosquito midgut and are widely considered to be an essential tool for malaria elimination. High-titer functional antibodies are required against target antigens to achieve effective transmission-blocking activity. We have fused Pfs25, the leading malaria TBV candidate antigen to IMX313, a molecular adjuvant and expressed it both in ChAd63 and MVA viral vectors and as a secreted protein-nanoparticle. Pfs25-IMX313 expressed from viral vectors or as a protein-nanoparticle is significantly more immunogenic and gives significantly better transmission-reducing activity than monomeric Pfs25. In addition, we demonstrate that the Pfs25-IMX313 protein-nanoparticle leads to a qualitatively improved antibody response in comparison to soluble Pfs25, as well as to significantly higher germinal centre (GC) responses. These results demonstrate that antigen multimerization using IMX313 is a very promising strategy to enhance antibody responses against Pfs25, and that Pfs25-IMX313 is a highly promising TBV candidate vaccine.
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Affiliation(s)
- Yuanyuan Li
- Jenner Institute, University of Oxford, Oxford, OX3 7DQ, UK
| | | | - Kazutoyo Miura
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious. Disease/National Institutes of Health, Rockville, Maryland, USA
| | - Daria Nikolaeva
- Jenner Institute, University of Oxford, Oxford, OX3 7DQ, UK.,Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious. Disease/National Institutes of Health, Rockville, Maryland, USA
| | - Iona J Brian
- Jenner Institute, University of Oxford, Oxford, OX3 7DQ, UK
| | | | - Alex J Fyfe
- Jenner Institute, University of Oxford, Oxford, OX3 7DQ, UK
| | | | | | - Carole A Long
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious. Disease/National Institutes of Health, Rockville, Maryland, USA
| | - Simon J Draper
- Jenner Institute, University of Oxford, Oxford, OX3 7DQ, UK
| | | | | | - Sumi Biswas
- Jenner Institute, University of Oxford, Oxford, OX3 7DQ, UK
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Draper SJ, Angov E, Horii T, Miller LH, Srinivasan P, Theisen M, Biswas S. Recent advances in recombinant protein-based malaria vaccines. Vaccine 2015; 33:7433-43. [PMID: 26458807 PMCID: PMC4687528 DOI: 10.1016/j.vaccine.2015.09.093] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Revised: 09/05/2015] [Accepted: 09/28/2015] [Indexed: 01/03/2023]
Abstract
Protein-based vaccines remain the cornerstone approach for B cell and antibody induction against leading target malaria antigens. Advances in antigen selection, immunogen design and epitope-focusing are advancing the field. New heterologous expression platforms are enabling cGMP production of next-generation protein vaccines. Next-generation antigens, protein-based immunogens and virus-like particle (VLP) delivery platforms are in clinical development. Protein-based vaccines will form part of a highly effective multi-component/multi-stage/multi-antigen subunit formulation against malaria.
Plasmodium parasites are the causative agent of human malaria, and the development of a highly effective vaccine against infection, disease and transmission remains a key priority. It is widely established that multiple stages of the parasite's complex lifecycle within the human host and mosquito vector are susceptible to vaccine-induced antibodies. The mainstay approach to antibody induction by subunit vaccination has been the delivery of protein antigen formulated in adjuvant. Extensive efforts have been made in this endeavor with respect to malaria vaccine development, especially with regard to target antigen discovery, protein expression platforms, adjuvant testing, and development of soluble and virus-like particle (VLP) delivery platforms. The breadth of approaches to protein-based vaccines is continuing to expand as innovative new concepts in next-generation subunit design are explored, with the prospects for the development of a highly effective multi-component/multi-stage/multi-antigen formulation seeming ever more likely. This review will focus on recent progress in protein vaccine design, development and/or clinical testing for a number of leading malaria antigens from the sporozoite-, merozoite- and sexual-stages of the parasite's lifecycle–including PfCelTOS, PfMSP1, PfAMA1, PfRH5, PfSERA5, PfGLURP, PfMSP3, Pfs48/45 and Pfs25. Future prospects and challenges for the development, production, human delivery and assessment of protein-based malaria vaccines are discussed.
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Affiliation(s)
- Simon J Draper
- The Jenner Institute, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Headington, Oxford OX3 7DQ, UK.
| | - Evelina Angov
- Walter Reed Army Institute of Research, U. S. Military Malaria Research Program, Malaria Vaccine Branch, 503 Robert Grant Avenue, Silver Spring, MD 20910, USA
| | - Toshihiro Horii
- Department of Molecular Protozoology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka 561-873, Japan
| | - Louis H Miller
- Malaria Cell Biology Section, Laboratory of Malaria and Vector Research, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852, USA
| | - Prakash Srinivasan
- Malaria Cell Biology Section, Laboratory of Malaria and Vector Research, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852, USA
| | - Michael Theisen
- Department for Congenital Disorders, Statens Serum Institut, Copenhagen, Denmark; Centre for Medical Parasitology at Department of International Health, Immunology, and Microbiology and Department of Infectious Diseases, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Sumi Biswas
- The Jenner Institute, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Headington, Oxford OX3 7DQ, UK
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Zhang T, Yu W, Wang Y, Hu T. Moderate PEGylation of the carrier protein improves the polysaccharide-specific immunogenicity of meningococcal group A polysaccharide conjugate vaccine. Vaccine 2015; 33:3208-14. [DOI: 10.1016/j.vaccine.2015.04.094] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 04/19/2015] [Accepted: 04/28/2015] [Indexed: 11/26/2022]
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Bolchi A, Canali E, Santoni A, Spagnoli G, Viarisio D, Accardi R, Tommasino M, Müller M, Ottonello S. Thioredoxin-Displayed Multipeptide Immunogens. Methods Mol Biol 2015; 1348:137-51. [PMID: 26424270 DOI: 10.1007/978-1-4939-2999-3_14] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Fusion to carrier proteins is an effective strategy for stabilizing and providing immunogenicity to peptide epitopes. This is commonly achieved by cross-linking of chemically synthesized peptides to carrier proteins. An alternative approach is internal grafting of selected peptide epitopes to a scaffold protein via double stranded-oligonucleotide insertion or gene synthesis, followed by recombinant expression of the resulting chimeric polypeptide. The scaffold protein should confer immunogenicity to the stabilized and structurally constrained peptide, but also afford easy production of the antigen in recombinant form. A macromolecular scaffold that meets the above criteria is the redox protein thioredoxin, especially bacterial thioredoxin. Here we describe our current methodology for internal grafting of selected peptide epitopes to thioredoxin as tandemly arranged multipeptide repeats ("Thioredoxin Displayed Multipeptide Immunogens"), bacterial expression and purification of the recombinant thioredoxin-multipeptide fusion proteins and their use as antigens for the production of anti-peptide antibodies for prophylactic vaccine as well as diagnostic purposes.
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Affiliation(s)
- Angelo Bolchi
- Biochemistry and Molecular Biology Unit, Department of Life Sciences, University of Parma, Parma, Italy
| | - Elena Canali
- Biochemistry and Molecular Biology Unit, Department of Life Sciences, University of Parma, Parma, Italy
| | - Andrea Santoni
- Biochemistry and Molecular Biology Unit, Department of Life Sciences, University of Parma, Parma, Italy
| | - Gloria Spagnoli
- Biochemistry and Molecular Biology Unit, Department of Life Sciences, University of Parma, Parma, Italy
| | | | - Rosita Accardi
- Infections and Cancer Biology Group, International Agency for Research on Cancer-World Health Organization, Lyon, France
| | - Massimo Tommasino
- Infections and Cancer Biology Group, International Agency for Research on Cancer-World Health Organization, Lyon, France
| | | | - Simone Ottonello
- Biochemistry and Molecular Biology Unit, Department of Life Sciences, University of Parma, Parma, Italy. .,Dipartimento di Bioscienze, Università di Parma, Parco Area delle Scienze 23/A, Parma, 43124, Italy.
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Impact of detergent on biophysical properties and immune response of the IpaDB fusion protein, a candidate subunit vaccine against Shigella species. Infect Immun 2014; 83:292-9. [PMID: 25368115 DOI: 10.1128/iai.02457-14] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Shigella spp. are causative agents of bacillary dysentery, a human illness with high global morbidity levels, particularly among elderly and infant populations. Shigella infects via the fecal-oral route, and its virulence is dependent upon a type III secretion system (T3SS). Two components of the exposed needle tip complex of the Shigella T3SS, invasion plasmid antigen D (IpaD) and IpaB, have been identified as broadly protective antigens in the mouse lethal pneumonia model. A recombinant fusion protein (DB fusion) was created by joining the coding sequences of IpaD and IpaB. The DB fusion is coexpressed with IpaB's cognate chaperone, IpgC, for proper recombinant expression. The chaperone can then be removed by using the mild detergents octyl oligooxyethelene (OPOE) or N,N-dimethyldodecylamine N-oxide (LDAO). The DB fusion in OPOE or LDAO was used for biophysical characterization and subsequent construction of an empirical phase diagram (EPD). The EPD showed that the DB fusion in OPOE is most stable at neutral pH below 55 °C. In contrast, the DB fusion in LDAO exhibited remarkable thermal plasticity, since this detergent prevents the loss of secondary and tertiary structures after thermal unfolding at 90 °C, as well as preventing thermally induced aggregation. Moreover, the DB fusion in LDAO induced higher interleukin-17 secretion and provided a higher protective efficacy in a mouse challenge model than did the DB fusion in OPOE. These data indicate that LDAO might introduce plasticity to the protein, promoting thermal resilience and enhanced protective efficacy, which may be important in its use as a subunit vaccine.
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Luckgei N, Habenstein B, Ravotti F, Megy S, Penin F, Marchand JB, Hill F, Böckmann A, Meier BH. Solid-state NMR sequential assignments of the C-terminal oligomerization domain of human C4b-binding protein. BIOMOLECULAR NMR ASSIGNMENTS 2014; 8:1-6. [PMID: 23138856 DOI: 10.1007/s12104-012-9440-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 10/31/2012] [Indexed: 06/01/2023]
Abstract
The complement 4 binding protein (C4bp) plays a crucial role in the inhibition of the complement cascade. It has an extraordinary seven-arm octopus-like structure with 7 tentacle-like identical chains, held together at their C-terminal end. The C-terminal domain does oligomerize in isolation, and is necessary and sufficient to oligomerize full-length C4bp. It is predicted to form a seven-helix coiled coil, and its multimerization properties make it a promising vaccine adjuvant, probably by enhancing the structural stability and binding affinity of the presented antigen. Here, we present the solid-state NMR resonance assignment of the human C4bp C-terminal oligomerization Domain, hC4pbOD, and the corresponding secondary chemical shifts.
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Affiliation(s)
- Nina Luckgei
- Institut de Biologie et Chimie des Protéines, UMR 5086 CNRS, Université de Lyon 1, 7 passage du Vercors, 69367, Lyon, France
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50
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Llewellyn D, de Cassan SC, Williams AR, Douglas AD, Forbes EK, Adame-Gallegos JR, Shi J, Pleass RJ, Draper SJ. Assessment of antibody-dependent respiratory burst activity from mouse neutrophils on Plasmodium yoelii malaria challenge outcome. J Leukoc Biol 2014; 95:369-82. [PMID: 24163420 PMCID: PMC3896657 DOI: 10.1189/jlb.0513274] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 09/23/2013] [Accepted: 10/01/2013] [Indexed: 01/12/2023] Open
Abstract
New tools are required to expedite the development of an effective vaccine against the blood-stage infection with the human malaria parasite Plasmodium falciparum. This work describes the assessment of the ADRB assay in a mouse model, characterizing the functional interaction between antimalarial serum antibodies and FcRs upon neutrophils. We describe a reproducible, antigen-specific assay, dependent on functional FcR signaling, and show that ADRB activity is induced equally by IgG1 and IgG2a isotypes and is modulated by blocking FcR function. However, following immunization of mice with the blood-stage vaccine candidate antigen MSP142, no measurable ADRB activity was induced against PEMS and neither was vaccine efficacy modulated against Plasmodium yoelii blood-stage challenge in γ(-/-) mice compared with WT mice. In contrast, following a primary, nonlethal P. yoelii parasite challenge, serum from vaccinated mice and nonimmunized controls showed anti-PEMS ADRB activity. Upon secondary challenge, nonimmunized γ(-/-) mice showed a reduced ability to control blood-stage parasitemia compared with immunized γ(-/-) mice; however, WT mice, depleted of their neutrophils, did not lose their ability to control infection. Thus, whereas neutrophil-induced ADRB against PEMS does not appear to play a role in protection against P. yoelii rodent malaria, induction of ADRB activity after challenge suggests that antigen targets of anti-PEMS ADRB activity remain to be established, as well as further supporting the observation that ADRB activity to P. falciparum arises following repeated natural exposure.
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Affiliation(s)
- David Llewellyn
- 1.University of Oxford, Old Road Campus Research Building, Oxford, OX3 7DQ, UK.
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