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Bliss CM, Bowyer G, Anagnostou NA, Havelock T, Snudden CM, Davies H, de Cassan SC, Grobbelaar A, Lawrie AM, Venkatraman N, Poulton ID, Roberts R, Mange PB, Choudhary P, Faust SN, Colloca S, Gilbert SC, Nicosia A, Hill AVS, Ewer KJ. Assessment of novel vaccination regimens using viral vectored liver stage malaria vaccines encoding ME-TRAP. Sci Rep 2018; 8:3390. [PMID: 29467399 PMCID: PMC5821890 DOI: 10.1038/s41598-018-21630-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 02/07/2018] [Indexed: 11/18/2022] Open
Abstract
Heterologous prime-boost vaccination with viral vectors simian adenovirus 63 (ChAd63) and Modified Vaccinia Ankara (MVA) induces potent T cell and antibody responses in humans. The 8-week regimen demonstrates significant efficacy against malaria when expressing the pre-erythrocytic malaria antigen Thrombospondin-Related Adhesion Protein fused to a multiple epitope string (ME-TRAP). We tested these vaccines in 7 new 4- and 8- week interval schedules to evaluate safety and immunogenicity of multiple ChAd63 ME-TRAP priming vaccinations (denoted A), multiple MVA ME-TRAP boosts (denoted M) and alternating vectors. All regimens exhibited acceptable reactogenicity and CD8+ T cell immunogenicity was enhanced with a 4-week interval (AM) and with incorporation of additional ChAd63 ME-TRAP vaccination at 4- or 8-weeks (AAM or A_A_M). Induction of TRAP antibodies was comparable between schedules. T cell immunity against the ChAd63 hexon did not affect T cell responses to the vaccine insert, however pre-vaccination ChAd63-specific T cells correlated with reduced TRAP antibodies. Vaccine-induced antibodies against MVA did not affect TRAP antibody induction, and correlated positively with ME-TRAP-specific T cells. This study identifies potentially more effective immunisation regimens to assess in Phase IIa trials and demonstrates a degree of flexibility with the timing of vectored vaccine administration, aiding incorporation into existing vaccination programmes.
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Affiliation(s)
- Carly M Bliss
- The Jenner Institute, University of Oxford, Oxford, UK.
| | | | | | - Tom Havelock
- NIHR Wellcome Trust Clinical Research Facility, University of Southampton, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | | | - Huw Davies
- Department of Medicine, Division of Infectious Diseases, University of California, Irvine, CA, USA
| | | | | | | | | | - Ian D Poulton
- The Jenner Institute, University of Oxford, Oxford, UK
| | | | - Pooja B Mange
- The Jenner Institute, University of Oxford, Oxford, UK
| | | | - Saul N Faust
- NIHR Wellcome Trust Clinical Research Facility, University of Southampton, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | | | | | - Alfredo Nicosia
- ReiThera (formerly Okairos), 00144, Rome, Italy
- CEINGE, Via Comunale Margherita, 484-538, 80131, Napoli, Italy
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Naples, Italy
| | | | - Katie J Ewer
- The Jenner Institute, University of Oxford, Oxford, UK
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Valentine LE, Loffredo JT, Bean AT, León EJ, MacNair CE, Beal DR, Piaskowski SM, Klimentidis YC, Lank SM, Wiseman RW, Weinfurter JT, May GE, Rakasz EG, Wilson NA, Friedrich TC, O'Connor DH, Allison DB, Watkins DI. Infection with "escaped" virus variants impairs control of simian immunodeficiency virus SIVmac239 replication in Mamu-B*08-positive macaques. J Virol 2009; 83:11514-27. [PMID: 19726517 PMCID: PMC2772717 DOI: 10.1128/jvi.01298-09] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2009] [Accepted: 08/20/2009] [Indexed: 12/31/2022] Open
Abstract
An understanding of the mechanism(s) by which some individuals spontaneously control human immunodeficiency virus (HIV)/simian immunodeficiency virus replication may aid vaccine design. Approximately 50% of Indian rhesus macaques that express the major histocompatibility complex (MHC) class I allele Mamu-B*08 become elite controllers after infection with simian immunodeficiency virus SIVmac239. Mamu-B*08 has a binding motif that is very similar to that of HLA-B27, a human MHC class I allele associated with the elite control of HIV, suggesting that SIVmac239-infected Mamu-B*08-positive (Mamu-B*08+) animals may be a good model for the elite control of HIV. The association with MHC class I alleles implicates CD8+ T cells and/or natural killer cells in the control of viral replication. We therefore introduced point mutations into eight Mamu-B*08-restricted CD8+ T-cell epitopes to investigate the contribution of epitope-specific CD8+ T-cell responses to the development of the control of viral replication. Ten Mamu-B*08+ macaques were infected with this mutant virus, 8X-SIVmac239. We compared immune responses and viral loads of these animals to those of wild-type SIVmac239-infected Mamu-B*08+ macaques. The five most immunodominant Mamu-B*08-restricted CD8+ T-cell responses were barely detectable in 8X-SIVmac239-infected animals. By 48 weeks postinfection, 2 of 10 8X-SIVmac239-infected Mamu-B*08+ animals controlled viral replication to <20,000 viral RNA (vRNA) copy equivalents (eq)/ml plasma, while 10 of 15 wild-type-infected Mamu-B*08+ animals had viral loads of <20,000 vRNA copy eq/ml (P = 0.04). Our results suggest that these epitope-specific CD8+ T-cell responses may play a role in establishing the control of viral replication in Mamu-B*08+ macaques.
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Affiliation(s)
- Laura E. Valentine
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - John T. Loffredo
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - Alex T. Bean
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - Enrique J. León
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - Caitlin E. MacNair
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - Dominic R. Beal
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - Shari M. Piaskowski
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - Yann C. Klimentidis
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - Simon M. Lank
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - Roger W. Wiseman
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - Jason T. Weinfurter
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - Gemma E. May
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - Eva G. Rakasz
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - Nancy A. Wilson
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - Thomas C. Friedrich
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - David H. O'Connor
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - David B. Allison
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
| | - David I. Watkins
- Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53706, Wisconsin National Primate Research Center, University of Wisconsin—Madison, Madison, Wisconsin 53715, Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama 35294, Department of Pathobiological Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin 53706
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