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Iankov ID, Allen C, Federspiel MJ, Myers RM, Peng KW, Ingle JN, Russell SJ, Galanis E. Expression of immunomodulatory neutrophil-activating protein of Helicobacter pylori enhances the antitumor activity of oncolytic measles virus. Mol Ther 2012; 20:1139-47. [PMID: 22334023 DOI: 10.1038/mt.2012.4] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Helicobacter pylori neutrophil-activating protein (NAP) is a major virulence factor and powerful inducer of inflammatory reaction and Th1-polarized immune response. Here, we evaluated the therapeutic efficacy of measles virus (MV) strains engineered to express secretory NAP forms against metastatic breast cancer. Recombinant viruses encoding secretory NAP forms (MV-lambda-NAP and MV-s-NAP) efficiently infect and destroy breast cancer cells by cell-to-cell viral spread and large syncytia formation independently of hormone receptor status. Intrapleural administration of MV-s-NAP doubled the median survival in a pleural effusion xenograft model: 65 days as compared to 29 days in the control group (P < 0.0001). This therapeutic effect correlated with a brisk Th1 type cytokine response in vivo. Secretory NAP was expressed at high levels by infected tumor cells and increased tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and IL-12/23 cytokine concentrations were detected in the pleural effusion. In an aggressive model of lung metastatic breast cancer, MV-lambda-NAP and MV-s-NAP also significantly improved survival of the treated animals (P < 0.05) as compared to the control MV strain. These data suggest that potent immunomodulators of bacterial origin, such as H. pylori NAP, can enhance the antitumor effect of oncolytic viruses and support the feasibility and potential of a combined viroimmunotherapy approach.
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Affiliation(s)
- Ianko D Iankov
- Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, USA
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52
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Employing Live Microbes for Vaccine Delivery. DEVELOPMENT OF NOVEL VACCINES 2012. [PMCID: PMC7123214 DOI: 10.1007/978-3-7091-0709-6_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/29/2022]
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53
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Sato H, Yoneda M, Honda T, Kai C. Recombinant vaccines against the mononegaviruses--what we have learned from animal disease controls. Virus Res 2011; 162:63-71. [PMID: 21982973 PMCID: PMC7114506 DOI: 10.1016/j.virusres.2011.09.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Accepted: 09/28/2011] [Indexed: 11/30/2022]
Abstract
The mononegaviruses include a number of highly contagious and severe disease-causing viruses of both animals and humans. For the control of these viral diseases, development of vaccines, either with classical methods or with recombinant DNA virus vectors, has been attempted over the years. Recently reverse genetics of mononegaviruses has been developed and used to generate infectious viruses possessing genomes derived from cloned cDNA in order to study the consequent effects of viral gene manipulations on phenotype. This technology allows us to develop novel candidate vaccines. In particular, a variety of different attenuation strategies to produce a range of attenuated mononegavirus vaccines have been studied. In addition, because of their ideal nature as live vaccines, recombinant mononegaviruses expressing foreign proteins have also been produced with the aim of developing multivalent vaccines against more than one pathogen. These recombinant mononegaviruses are currently under evaluation as new viral vectors for vaccination. Reverse genetics could have great potential for the preparation of vaccines against many mononegaviruses.
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Affiliation(s)
- Hiroki Sato
- Laboratory Animal Research Center/International Research Center for Infectious Diseases, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan.
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54
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Iankov ID, Haralambieva IH, Galanis E. Immunogenicity of attenuated measles virus engineered to express Helicobacter pylori neutrophil-activating protein. Vaccine 2010; 29:1710-20. [PMID: 21182995 DOI: 10.1016/j.vaccine.2010.12.020] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2010] [Revised: 12/01/2010] [Accepted: 12/06/2010] [Indexed: 12/11/2022]
Abstract
Helicobacter pylori is a Gram-negative, spiral-shaped microorganism associated with acute and chronic gastritis, peptic ulcer, gastric cancer and gastric lymphomas in humans. H. pylori neutrophil-activating protein (NAP) is a major virulence factor playing a central role in pathogenesis of mucosal inflammation by immune cell attraction and Th1 cytokine response polarization. NAP is protective antigen and promising vaccine candidate against H. pylori infection. Here we present the development of measles virus (MV) vaccine strain encoding the NAP antigen. In order to facilitate the extracellular transport and detection, NAP was inserted in the human lambda immunoglobulin chain replacing a major part of the variable domain. We generated two MV vectors expressing secretory NAP forms: MV-lambda-NAP encoding the full-length constant lambda light chain domain and MV-s-NAP encoding only the N-terminus of the lambda light chain with the leader peptide. Immunization of MV permissive Ifnarko-CD46Ge transgenic mice by a single intraperitoneal injection of the NAP-expressing strains induced a robust, long-term humoral and cellular immune response against MV. Nine months post vaccination measles-neutralizing antibody titers were above the serum level considered protective for humans. Furthermore, all animals immunized with MV strains expressing the secretory NAP antigen developed strong humoral immunity against NAP, reaching titers >1:10,000 within 2-4 weeks. IFN-γ ELISpot assay confirmed that NAP-encoding MV vectors can also stimulate NAP-specific cell-mediated immunity. Our data demonstrate that MV is an excellent vector platform for expression of bacterial antigens and development of vaccines for H. pylori immunoprophylaxis in humans.
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Affiliation(s)
- Ianko D Iankov
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA
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55
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Murrell S, Wu SC, Butler M. Review of dengue virus and the development of a vaccine. Biotechnol Adv 2010; 29:239-47. [PMID: 21146601 DOI: 10.1016/j.biotechadv.2010.11.008] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2010] [Revised: 11/28/2010] [Accepted: 11/29/2010] [Indexed: 01/28/2023]
Abstract
Dengue viral infection has become an increasing global health concern with over two-fifths of the world's population at risk of infection. It is the most rapidly spreading vector borne disease, attributed to changing demographics, urbanization, environment, and global travel. It continues to be a threat in over 100 tropical and sub-tropical countries, affecting predominantly children. Dengue also carries a hefty financial burden on the health care systems in affected areas, as those infected seek care for their symptoms. The search for a suitable vaccine for dengue has been ongoing for the last sixty years, yet any effective treatment or vaccine remains elusive. A vaccine must be protective for all four serotypes of dengue and be cost-effective. Many approaches to developing candidate vaccines have been employed. The candidates include live attenuated tetravalent vaccines, chimeric tetravalent vaccines based on attenuated dengue virus or Yellow Fever 17D, and recombinant DNA vaccines based on flavivirus and non-flavivirus vectors. This review outlines the challenges involved in dengue vaccine development and presents the current stages of proposed vaccine candidate development.
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Affiliation(s)
- Sarah Murrell
- Department of Microbiology, University of Manitoba, Winnipeg, Manitoba, Canada
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56
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Progress towards development of an HIV vaccine: report of the AIDS Vaccine 2009 Conference. THE LANCET. INFECTIOUS DISEASES 2010; 10:305-16. [PMID: 20417413 DOI: 10.1016/s1473-3099(10)70069-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The search for an HIV/AIDS vaccine is steadily moving ahead, generating and validating new concepts in terms of novel vectors for antigen delivery and presentation, new vaccine and adjuvant strategies, alternative approaches to design HIV-1 antigens for eliciting protective cross-neutralising antibodies, and identification of key mechanisms in HIV infection and modulation of the immune system. All these different perspectives are contributing to the unprecedented challenge of developing a protective HIV-1 vaccine. The high scientific value of this massive effort is its great impact on vaccinology as a whole, providing invaluable scientific information for the current and future development of new preventive vaccine as well as therapeutic knowledge-based infectious-disease and cancer vaccines.
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57
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New vaccine design based on defective genomes that combines features of attenuated and inactivated vaccines. PLoS One 2010; 5:e10414. [PMID: 20454676 PMCID: PMC2861626 DOI: 10.1371/journal.pone.0010414] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2009] [Accepted: 04/12/2010] [Indexed: 12/22/2022] Open
Abstract
Background New vaccine designs are needed to control diseases associated with antigenically variable RNA viruses. Foot-and-mouth disease (FMD) is a highly contagious disease of livestock that inflicts severe economic losses. Although the current whole-virus chemically inactivated vaccine has proven effective, it has led to new outbreaks of FMD because of incomplete inactivation of the virus or the escape of infectious virus from vaccine production premises. We have previously shown that serial passages of FMD virus (FMDV) C-S8c1 at high multiplicity of infection in cell culture resulted in virus populations consisting of defective genomes that are infectious by complementation (termed C-S8p260). Principal Finding Here we evaluate the immunogenicity of C-S8p260, first in a mouse model system to establish a proof of principle, and second, in swine, the natural host of FMDV C-S8c1. Mice were completely protected against a lethal challenge with FMDV C-S8c1, after vaccination with a single dose of C-S8p260. Pigs immunized with different C-S8p260 doses and challenged with FMDV C-S8c1 either did not develop any clinical signs or showed delayed and mild disease symptoms. C-S8p260 induced high titers of both FMDV-specific, neutralizing antibodies and activated FMDV-specific T cells in swine, that correlated with solid protection against FMDV. Conclusions The defective virus-based vaccine did not produce detectable levels of transmissible FMDV. Therefore, a segmented, replication-competent form of a virus, such as FMDV C-S8p260, can provide the basis of a new generation of attenuated antiviral vaccines with two safety barriers. The design can be extended to any viral pathogen that encodes trans-acting gene products, allowing complementation between replication-competent, defective forms.
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58
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Measles virus selectively blind to signaling lymphocytic activation molecule (SLAM; CD150) is attenuated and induces strong adaptive immune responses in rhesus monkeys. J Virol 2010; 84:3413-20. [PMID: 20071568 DOI: 10.1128/jvi.02304-09] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The signaling lymphocytic activation molecule (SLAM; CD150) is the immune cell receptor for measles virus (MV). To assess the importance of the SLAM-MV interactions for virus spread and pathogenesis, we generated a wild-type IC-B MV selectively unable to recognize human SLAM (SLAM-blind). This virus differs from the fully virulent wild-type IC-B strain by a single arginine-to-alanine substitution at amino acid 533 of the attachment protein hemagglutinin and infects cells through SLAM about 40 times less efficiently than the isogenic wild-type strain. Ex vivo, this virus infects primary lymphocytes at low levels regardless of SLAM expression. When a group of six rhesus monkeys (Macaca mulatta) was inoculated intranasally with the SLAM-blind virus, no clinical symptoms were documented. Only one monkey had low-level viremia early after infection, whereas all the hosts in the control group had high viremia levels. Despite minimal, if any, viremia, all six hosts generated neutralizing antibody titers close to those of the control monkeys while MV-directed cellular immunity reached levels at least as high as in wild-type-infected monkeys. These findings prove formally that efficient SLAM recognition is necessary for MV virulence and pathogenesis. They also suggest that the selectively SLAM-blind wild-type MV can be developed into a vaccine vector.
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Abstract
The antiquated system used to manufacture the currently licensed inactivated influenza virus vaccines would not be adequate during an influenza virus pandemic. There is currently a search for vaccines that can be developed faster and provide superior, long-lasting immunity to influenza virus as well as other highly pathogenic viruses and bacteria. Recombinant vectors provide a safe and effective method to elicit a strong immune response to a foreign protein or epitope. This review explores the advantages and limitations of several different vectors that are currently being tested, and highlights some of the newer viruses being used as recombinant vectors.
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60
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Cantarella G, Liniger M, Zuniga A, Schiller JT, Billeter M, Naim HY, Glueck R. Recombinant measles virus-HPV vaccine candidates for prevention of cervical carcinoma. Vaccine 2009; 27:3385-90. [PMID: 19200837 PMCID: PMC3487399 DOI: 10.1016/j.vaccine.2009.01.061] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Cervical cancer is mainly associated with HPV genotype 16 infection. Recombinant measles virus (rMV) expressing HPV genotype 16 L1 capsid protein was generated by construction of an antigenomic plasmid, followed by rescue using the human "helper" cell line 293-3-46. In cell cultures the recombinant MV-L1 virus replicated practically as efficiently as the standard attenuated MV established as commercial vaccine, devoid of the transgene. The high genetic stability of MVb2-L1 was confirmed by 10 serial viral transfers in cell culture. In transgenic mice expressing the MV receptor CD46 the recombinant induced strong humoral immune responses against both MV and HPV; the antibodies against L1 exhibited mainly neutralizing capacity. Our data suggest that MV is a promising vehicle for development of inexpensive and efficient vaccines protecting from HPV infection.
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Affiliation(s)
| | | | - Armando Zuniga
- Crucell-Berna Biotech, Rehhagstrasse 79, 3018 Bern, Switzerland
| | - John T. Schiller
- Laboratory of Cellular Oncology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, USA
| | - Martin Billeter
- Institute of Molecular Biology, University of Zürich, Zürich, Switzerland
| | - Hussein Y. Naim
- Crucell-Berna Biotech, Rehhagstrasse 79, 3018 Bern, Switzerland
| | - Reinhard Glueck
- Etna Biotech srl, Catania, Italy
- Crucell-Berna Biotech, Rehhagstrasse 79, 3018 Bern, Switzerland
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61
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Guerbois M, Moris A, Combredet C, Najburg V, Ruffié C, Février M, Cayet N, Brandler S, Schwartz O, Tangy F. Live attenuated measles vaccine expressing HIV-1 Gag virus like particles covered with gp160DeltaV1V2 is strongly immunogenic. Virology 2009; 388:191-203. [PMID: 19345390 DOI: 10.1016/j.virol.2009.02.047] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2009] [Revised: 02/04/2009] [Accepted: 02/24/2009] [Indexed: 10/20/2022]
Abstract
Although a live attenuated HIV vaccine is not currently considered for safety reasons, a strategy inducing both T cells and neutralizing antibodies to native assembled HIV-1 particles expressed by a replicating virus might mimic the advantageous characteristics of live attenuated vaccine. To this aim, we generated a live attenuated recombinant measles vaccine expressing HIV-1 Gag virus-like particles (VLPs) covered with gp160DeltaV1V2 Env protein. The measles-HIV virus replicated efficiently in cell culture and induced the intense budding of HIV particles covered with Env. In mice sensitive to MV infection, this recombinant vaccine stimulated high levels of cellular and humoral immunity to both MV and HIV with neutralizing activity. The measles-HIV virus infected human professional antigen-presenting cells, such as dendritic cells and B cells, and induced efficient presentation of HIV-1 epitopes and subsequent activation of human HIV-1 Gag-specific T cell clones. This candidate vaccine will be next tested in non-human primates. As a pediatric vaccine, it might protect children and adolescents simultaneously from measles and HIV.
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Affiliation(s)
- Mathilde Guerbois
- Laboratoire de Génomique Virale et Vaccination, CNRS URA 3015, Institut Pasteur, Paris Cedex 15, France
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62
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Hummel HD, Kuntz G, Russell SJ, Nakamura T, Greiner A, Einsele H, Topp MS. Genetically engineered attenuated measles virus specifically infects and kills primary multiple myeloma cells. J Gen Virol 2009; 90:693-701. [PMID: 19218216 DOI: 10.1099/vir.0.007302-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The applicability of cytoreductive treatment of malignant diseases using recombinant viruses strongly depends on specific recognition of surface receptors to target exclusively neoplastic cells. A recently generated monoclonal antibody (mAb), Wue-1, specifically detects CD138(+) multiple myeloma (MM) cells. In this study, a haemagglutinin (H) protein that was receptor-blinded (i.e. did not bind to CD46 and CD150) was genetically re-engineered by fusing it to a single-chain antibody fragment (scFv) derived from the Wue-1 mAb open reading frame (scFv-Wue), resulting in the recombinant retargeted measles virus (MV)-Wue. MV-Wue efficiently targeted and fully replicated in primary MM cells, reaching titres similar to those seen with non-retargeted viruses. In agreement with its altered receptor specificity, infection of target cells was no longer dependent on CD150 or CD46, but was restricted to cells that had been labelled with Wue-1 mAb. Importantly, infection with MV-Wue rapidly induced apoptosis in CD138(+) malignant plasma cell targets. MV-Wue is the first fully retargeted MV using the restricted interaction between Wue-1 mAb and primary MM cells specifically to infect, replicate in and deplete malignant plasma cells.
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Affiliation(s)
- Horst-Dieter Hummel
- Medizinische Klinik und Poliklinik II, Universitätsklinik Würzburg, Josef-Schneider-Str. 2, 97078 Würzburg, Germany
| | - Gabriele Kuntz
- Medizinische Klinik und Poliklinik II, Universitätsklinik Würzburg, Josef-Schneider-Str. 2, 97078 Würzburg, Germany
| | - Stephen J Russell
- Molecular Medicine Program, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Takafumi Nakamura
- Molecular Medicine Program, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Axel Greiner
- Institut für Pathologie, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 220, 69120 Heidelberg, Germany
| | - Hermann Einsele
- Medizinische Klinik und Poliklinik II, Universitätsklinik Würzburg, Josef-Schneider-Str. 2, 97078 Würzburg, Germany
| | - Max S Topp
- Medizinische Klinik und Poliklinik II, Universitätsklinik Würzburg, Josef-Schneider-Str. 2, 97078 Würzburg, Germany
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63
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Billeter MA, Naim HY, Udem SA. Reverse genetics of measles virus and resulting multivalent recombinant vaccines: applications of recombinant measles viruses. Curr Top Microbiol Immunol 2009; 329:129-62. [PMID: 19198565 PMCID: PMC7120638 DOI: 10.1007/978-3-540-70523-9_7] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An overview is given on the development of technologies to allow reverse genetics of RNA viruses, i.e., the rescue of viruses from cDNA, with emphasis on nonsegmented negative-strand RNA viruses ( Mononegavirales ), as exemplified for measles virus (MV). Primarily, these technologies allowed site-directed mutagenesis, enabling important insights into a variety of aspects of the biology of these viruses. Concomitantly, foreign coding sequences were inserted to (a) allow localization of virus replication in vivo through marker gene expression, (b) develop candidate multivalent vaccines against measles and other pathogens, and (c) create candidate oncolytic viruses. The vector use of these viruses was experimentally encouraged by the pronounced genetic stability of the recombinants unexpected for RNA viruses, and by the high load of insertable genetic material, in excess of 6 kb. The known assets, such as the small genome size of the vector in comparison to DNA viruses proposed as vectors, the extensive clinical experience of attenuated MV as vaccine with a proven record of high safety and efficacy, and the low production cost per vaccination dose are thus favorably complemented.
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Affiliation(s)
- M A Billeter
- University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland.
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64
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Abstract
This review describes the two interrelated and interdependent processes of transcription and replication for measles virus. First, we concentrate on the ribonucleoprotein (RNP) complex, which contains the negative sense genomic template and in encapsidated in every virion. Second, we examine the viral proteins involved in these processes, placing particular emphasis on their structure, conserved sequence motifs, their interaction partners and the domains which mediate these associations. Transcription is discussed in terms of sequence motifs in the template, editing, co-transcriptional modifications of the mRNAs and the phase of the gene start sites within the genome. Likewise, replication is considered in terms of promoter strength, copy numbers and the remarkable plasticity of the system. The review emphasises what is not known or known only by analogy rather than by direct experimental evidence in the MV replication cycle and hence where additional research, using reverse genetic systems, is needed to complete our understanding of the processes involved.
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Affiliation(s)
- B K Rima
- Centre for Infection and Immunity, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast BT9 7BL, Northern Ireland, UK.
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65
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Liniger M, Zuniga A, Morin TNA, Combardiere B, Marty R, Wiegand M, Ilter O, Knuchel M, Naim HY. Recombinant measles viruses expressing single or multiple antigens of human immunodeficiency virus (HIV-1) induce cellular and humoral immune responses. Vaccine 2009; 27:3299-305. [PMID: 19200842 PMCID: PMC7115622 DOI: 10.1016/j.vaccine.2009.01.057] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Recombinant measles viruses (rMV) based on the live attenuated measles vaccine strain (MVb) expressing antigens of HIV-1 clade B were generated by reverse genetics. Recombinants expressing single or double antigens of HIV-1 (rMV-HIV) were genetically highly stable on human diploid cells. The production process of these viruses was essentially similar to the parental MV strain, yielding comparative end titers. Immunization of tg-mice by different regimens and formulations showed potent humoral and cellular immune responses against MV and HIV antigens. Recombinant MV-HIV expressing Gag protein conferred protective immunity in tg-mice after a high-dose pseudochallenge with recombinant vaccinia virus. In addition, rMV-HIV boosted anti-HIV antibodies, in the presence of pre-existing anti-vector antibodies.
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Affiliation(s)
- Matthias Liniger
- Crucell - Berna Biotech LTD, Rehhagstrasse 79, 3018 Bern, Switzerland
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66
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de Vries RD, Stittelaar KJ, Osterhaus ADME, de Swart RL. Measles vaccination: new strategies and formulations. Expert Rev Vaccines 2008; 7:1215-23. [PMID: 18844595 DOI: 10.1586/14760584.7.8.1215] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Measles is a highly contagious viral disease. With 1 million deaths reported in 1996, measles was the leading cause of vaccine-preventable deaths. However, in recent years, significant progress has been made in measles control, reducing deaths attributed to measles to 454,000 in 2004 and 242,000 in 2006. The main strategy behind this reduction has been the improvement of vaccination coverage and implementation of a second opportunity for immunization with the live-attenuated measles vaccine. The Measles Initiative, a partnership between the American Red Cross, CDC, UNICEF, WHO and UN Foundation, has had a significant role in this achievement. Here, we provide an overview of old and new vaccination strategies, and discuss changes in the route of administration of the existing live-attenuated vaccine, the development of new-generation nonreplicating measles virus vaccine candidates and attempts to use recombinant measles virus as a vector for vaccination against other pathogens.
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Affiliation(s)
- Rory D de Vries
- Department of Virology, Erasmus MC, PO Box 2040, 3000 CA, Rotterdam, The Netherlands.
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67
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Patterson LJ, Robert-Guroff M. Replicating adenovirus vector prime/protein boost strategies for HIV vaccine development. Expert Opin Biol Ther 2008; 8:1347-63. [PMID: 18694354 DOI: 10.1517/14712598.8.9.1347] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND In recent years the HIV vaccine field introduced a number of promising vaccine candidates into human clinical trials. OBJECTIVE To briefly discuss the advances made in vaccine development and HIV pathogenesis and give an overview of the body of work our lab has generated in multiple animal models on replication-competent Adenovirus recombinant vaccines. METHODS Emphasis is placed on comparative examination of vaccine components, routes of immunization and challenge models using replicating Adenovirus vectors. RESULTS/CONCLUSION The findings make the case that replicating Adenovirus vectors are superior in priming multiple arms of the immune system, and in conjunction with protein boosting, have resulted in dramatic protective efficacy leading to their advancement to Phase I trials. Implications of the recent halting of the Merck Ad5-HIV Phase IIb clinical trial of our vaccine approach and other vectored vaccines are discussed.
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Affiliation(s)
- L Jean Patterson
- National Cancer Institute, National Institutes of Health, Vaccine Branch, Bethesda, Maryland 20892-5065, USA
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68
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Liniger M, Zuniga A, Tamin A, Azzouz-Morin TN, Knuchel M, Marty RR, Wiegand M, Weibel S, Kelvin D, Rota PA, Naim HY. Induction of neutralising antibodies and cellular immune responses against SARS coronavirus by recombinant measles viruses. Vaccine 2008; 26:2164-74. [PMID: 18346823 PMCID: PMC7115634 DOI: 10.1016/j.vaccine.2008.01.057] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2006] [Revised: 01/15/2008] [Accepted: 01/21/2008] [Indexed: 01/19/2023]
Abstract
Live attenuated recombinant measles viruses (rMV) expressing a codon-optimised spike glycoprotein (S) or nucleocapsid protein (N) of severe acute respiratory syndrome-associated coronavirus (SARS-CoV) were generated (rMV-S and rMV-N). Both recombinant viruses stably expressed the corresponding SARS-CoV proteins, grew to similar end titres as the parental strain and induced high antibody titres against MV and the vectored SARS-CoV antigens (S and N) in transgenic mice susceptible to measles infection. The antibodies induced by rMV-S had a high neutralising effect on SARS-CoV as well as on MV. Moreover, significant N-specific cellular immune responses were measured by IFN-gamma ELISPOT assays. The pre-existence of anti-MV antibodies induced by the initial immunisation dose did not inhibit boost of anti-S and anti-N antibodies. Immunisations comprising a mixture of rMV-S and rMV-N induced immune responses similar in magnitude to that of vaccine components administered separately. These data support the suitability of MV as a bivalent candidate vaccine vector against MV and emerging viruses such as SARS-CoV.
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Affiliation(s)
- Matthias Liniger
- Berna Biotech (a Crucell Company), Rehhagstrasse 79, CH-3018 Bern, Switzerland
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69
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Haga T, Murayama N, Shimizu Y, Saito A, Sakamoto T, Morita T, Komase K, Nakayama T, Uchida K, Katayama T, Shinohara A, Koshimoto C, Sato H, Miyata H, Katahira K, Goto Y. Analysis of antibody response by temperature-sensitive measles vaccine strain in the cotton rat model. Comp Immunol Microbiol Infect Dis 2008; 32:395-406. [PMID: 18249443 DOI: 10.1016/j.cimid.2007.11.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/10/2007] [Indexed: 10/22/2022]
Abstract
Measles virus (MeV) vaccine strain, AIK-C, is temperature sensitive (ts), which is thought to be associated with attenuation of virus pathogenicity. In this study, replication and antibody response were examined in cotton rats using viruses carrying different forms of the P gene, which is responsible for the ts phenotype of strain AIK-C and its parental Edmonston strain. When cotton rats were inoculated intranasally, ts viruses neither replicated in lungs, nor reproducibly generated an antibody response. When inoculated intramusculary (i.m.), however, ts strains raised an antibody titer in all animals. This response was not observed when ultraviolet-inactivated virus was used. ts virus, inoculated i.m., was recovered from cotton rat drainage lymph nodes. These results suggest that ts virus, inoculated i.m., could replicate in the cotton rat, presumably at the superficial lymph node, and induce an antibody response. Therefore, cotton rats can serve as a small-animal model for investigating immune responses to safer ts vaccine, as well as recombinant vaccine using AIK-C as a vector for protection against other infectious agents.
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Affiliation(s)
- Takeshi Haga
- Department of Veterinary Microbiology, University of Miyazaki, 1-1 Gakuen Kibanadai Nishi, Miyazaki 889-2192, Japan.
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70
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Robert-Guroff M. Replicating and non-replicating viral vectors for vaccine development. Curr Opin Biotechnol 2007; 18:546-56. [PMID: 18063357 PMCID: PMC2245896 DOI: 10.1016/j.copbio.2007.10.010] [Citation(s) in RCA: 175] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2007] [Accepted: 10/22/2007] [Indexed: 01/11/2023]
Abstract
Viral vectors provide a convenient means to deliver vaccine antigens to select target cells or tissues. A broad spectrum of replicating and non-replicating vectors is available. An appropriate choice for select applications will depend on the biology of the infectious agent targeted, as well as factors such as whether the vaccine is intended to prevent infection or boost immunity in already infected individuals, prior exposure of the target population to the vector, safety, and the number and size of gene inserts needed. Here several viral vectors under development as HIV/AIDS vaccines are reviewed. A vaccine strategy based on initial priming with a replicating vector to enlist the innate immune system, target mucosal inductive sites, and prime both cellular and humoral systemic and mucosal immune responses is proposed. Subsequently, boosting with a replicating or non-replicating vector and/or protein subunits could lead to induction of necessary levels of protective immunity.
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Affiliation(s)
- Marjorie Robert-Guroff
- National Institutes of Health, National Cancer Institute, Vaccine Branch, 41 Medlars Drive, Building 41, Room D804, Bethesda, MD 20892-5065, United States.
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del Valle JR, Devaux P, Hodge G, Wegner NJ, McChesney MB, Cattaneo R. A vectored measles virus induces hepatitis B surface antigen antibodies while protecting macaques against measles virus challenge. J Virol 2007; 81:10597-605. [PMID: 17634218 PMCID: PMC2045491 DOI: 10.1128/jvi.00923-07] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Hepatitis B virus (HBV) acute and chronic infections remain a major worldwide health problem. Towards developing an anti-HBV vaccine with single-dose scheme potential, we engineered infectious measles virus (MV) genomic cDNAs with a vaccine strain background and expression vector properties. Hepatitis B surface antigen (HBsAg) expression cassettes were inserted into this cDNA and three MVs expressing HBsAg at different levels generated. All vectored MVs, which secrete HBsAg as subviral particles, elicited humoral responses in MV-susceptible genetically modified mice. However, small differences in HBsAg expression elicited vastly different HBsAg antibody levels. The two vectors inducing the highest HBsAg antibody levels were inoculated into rhesus monkeys (Macaca mulatta). After challenge with a pathogenic MV strain (Davis87), control naive monkeys showed a classic measles rash and high viral loads. In contrast, all monkeys immunized with vaccine or a control nonvectored recombinant vaccine or HBsAg-expressing vectored MV remained healthy, with low or undetectable viral loads. After a single vaccine dose, only the vector expressing HBsAg at the highest levels elicited protective levels of HBsAg antibodies in two of four animals. These observations reveal an expression threshold for efficient induction of HBsAg humoral immune responses. This threshold is lower in mice than in macaques. Implications for the development of divalent vaccines based on live attenuated viruses are discussed.
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Affiliation(s)
- Jorge Reyes del Valle
- Molecular Medicine Program, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
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