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Latifi T, Jalilvand S, Golsaz-Shirazi F, Arashkia A, Kachooei A, Afchangi A, Zafarian S, Roohvand F, Shoja Z. Characterization and immunogenicity of a novel chimeric hepatitis B core-virus like particles (cVLPs) carrying rotavirus VP8*protein in mice model. Virology 2023; 588:109903. [PMID: 37832344 DOI: 10.1016/j.virol.2023.109903] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 09/23/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023]
Abstract
Given the efficacy and safety issues of the WHO for approved/prequalified live attenuated rotavirus (RV) vaccines, studies on alternative non-replicating modals and proper RV antigens are actively undertaken. Herein, we report the novel chimeric hepatitis B core-virus like particles (VLPs) carrying RV VP8*26-231 protein of a P [8] strain (cVLPVP8*), as a parenteral VLP RV vaccine candidate. SDS-PAGE and Western blotting analyses indicated the expected size of the E. coli-derived HBc-VP8* protein that self-assembled to cVLPVP8* particles. Immunization in mice indicated development of higher levels of IgG and IgA as well as higher IgG1/IgG2a ratios by cVLPVP8* vaccination compared to the VP8* alone. Assessment of neutralizing antibodies (nAbs) indicated development of heterotypic nAbs with cross-reactivity to a heterotypic RV strain by cVLPVP8* immunization compared to VP8* alone. The observed anti-VP8* cross-reactivity might indicate the possibility of developing a Pan-genomic RVA vaccine based on the cVLPVP8* formulation that deserves further challenge studies.
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Affiliation(s)
- Tayebeh Latifi
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Department of Virology, Pasteur Institute of Iran, Tehran, Iran
| | - Somayeh Jalilvand
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Forough Golsaz-Shirazi
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Arash Arashkia
- Department of Virology, Pasteur Institute of Iran, Tehran, Iran; Research Center for Emerging and Reemerging Infectious Diseases, Pasteur Institute of Iran, Tehran, Iran
| | - Atefeh Kachooei
- Department of Virology, Pasteur Institute of Iran, Tehran, Iran; Department of Virology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Atefeh Afchangi
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Department of Virology, Pasteur Institute of Iran, Tehran, Iran
| | - Saman Zafarian
- Department of Virology, Pasteur Institute of Iran, Tehran, Iran; Department of Microbial Biotechnology, College of Science, University of Tehran, Tehran, Iran
| | - Farzin Roohvand
- Department of Virology, Pasteur Institute of Iran, Tehran, Iran
| | - Zabihollah Shoja
- Department of Virology, Pasteur Institute of Iran, Tehran, Iran; Research Center for Emerging and Reemerging Infectious Diseases, Pasteur Institute of Iran, Tehran, Iran.
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2
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Liu Y, Han X, Qiao Y, Wang T, Yao L. Porcine Deltacoronavirus-like Particles Produced by a Single Recombinant Baculovirus Elicit Virus-Specific Immune Responses in Mice. Viruses 2023; 15:v15051095. [PMID: 37243181 DOI: 10.3390/v15051095] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/25/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023] Open
Abstract
Porcine deltacoronavirus (PDCoV) causes diarrhea and vomiting in neonatal piglets worldwide and has the potential for cross-species transmission. Therefore, virus-like particles (VLPs) are promising vaccine candidates because of their safety and strong immunogenicity. To the best of our knowledge, the present study reported for the first time the generation of PDCoV VLPs using a baculovirus expression vector system, and electron micrograph analyses revealed that PDCoV VLPs appeared as spherical particles with a diameter similar to that of the native virions. Furthermore, PDCoV VLPs effectively induced mice to produce PDCoV-specific IgG and neutralizing antibodies. In addition, VLPs could stimulate mouse splenocytes to produce high levels of cytokines IL-4 and IFN-γ. Moreover, the combination of PDCoV VLPs and Freund's adjuvant could improve the level of the immune response. Together, these data showed that PDCoV VLPs could effectively elicit humoral and cellular immunity in mice, laying a solid foundation for developing VLP-based vaccines to prevent PDCoV infections.
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Affiliation(s)
- Yangkun Liu
- Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, School of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Xueying Han
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Yaqi Qiao
- College of Veterinary Medicine and Engineering, Nanyang Vocational College of Agriculture, Nanyang 473061, China
| | - Tiejun Wang
- College of Veterinary Medicine and Engineering, Nanyang Vocational College of Agriculture, Nanyang 473061, China
| | - Lunguang Yao
- Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, School of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, China
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3
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Zhang L, Xu W, Ma X, Sun X, Fan J, Wang Y. Virus-like Particles as Antiviral Vaccine: Mechanism, Design, and Application. BIOTECHNOL BIOPROC E 2023; 28:1-16. [PMID: 36627930 PMCID: PMC9817464 DOI: 10.1007/s12257-022-0107-8] [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: 04/01/2022] [Revised: 05/17/2022] [Accepted: 05/18/2022] [Indexed: 01/09/2023]
Abstract
Virus-like particles (VLPs) are viral structural protein that are noninfectious as they do not contain viral genetic materials. They are safe and effective immune stimulators and play important roles in vaccine development because of their intrinsic immunogenicity to induce cellular and humoral immune responses. In the design of antiviral vaccine, VLPs based vaccines are appealing multifunctional candidates with the advantages such as self-assembling nanoscaled structures, repetitive surface epitopes, ease of genetic and chemical modifications, versatility as antigen presenting platforms, intrinsic immunogenicity, higher safety profile in comparison with live-attenuated vaccines and inactivated vaccines. In this review, we discuss the mechanism of VLPs vaccine inducing cellular and humoral immune responses. We outline the impact of size, shape, surface charge, antigen presentation, genetic and chemical modification, and expression systems when constructing effective VLPs based vaccines. Recent applications of antiviral VLPs vaccines and their clinical trials are summarized.
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Affiliation(s)
- Lei Zhang
- Xi'an Key Laboratory of Pathogenic Microorganism and Tumor Immunity, Department of Basic Medicine, Xi'an Medical University, Xi'an, 710021, Shaanxi China
| | - Wen Xu
- Xi'an Key Laboratory of Pathogenic Microorganism and Tumor Immunity, Department of Basic Medicine, Xi'an Medical University, Xi'an, 710021, Shaanxi China
| | - Xi Ma
- Xi'an Key Laboratory of Pathogenic Microorganism and Tumor Immunity, Department of Basic Medicine, Xi'an Medical University, Xi'an, 710021, Shaanxi China
| | - XiaoJing Sun
- Xi'an Key Laboratory of Pathogenic Microorganism and Tumor Immunity, Department of Basic Medicine, Xi'an Medical University, Xi'an, 710021, Shaanxi China
| | - JinBo Fan
- Xi'an Key Laboratory of Pathogenic Microorganism and Tumor Immunity, Department of Basic Medicine, Xi'an Medical University, Xi'an, 710021, Shaanxi China
| | - Yang Wang
- Xi'an Key Laboratory of Pathogenic Microorganism and Tumor Immunity, Department of Basic Medicine, Xi'an Medical University, Xi'an, 710021, Shaanxi China
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4
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Durable CD8 T Cell Memory against SARS-CoV-2 by Prime/Boost and Multi-Dose Vaccination: Considerations on Inter-Dose Time Intervals. Int J Mol Sci 2022; 23:ijms232214367. [PMID: 36430845 PMCID: PMC9698736 DOI: 10.3390/ijms232214367] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/08/2022] [Accepted: 11/14/2022] [Indexed: 11/22/2022] Open
Abstract
Facing the COVID-19 pandemic, anti-SARS-CoV-2 vaccines were developed at unprecedented pace, productively exploiting contemporary fundamental research and prior art. Large-scale use of anti-SARS-CoV-2 vaccines has greatly limited severe morbidity and mortality. Protection has been correlated with high serum titres of neutralizing antibodies capable of blocking the interaction between the viral surface protein spike and the host SARS-CoV-2 receptor, ACE-2. Yet, vaccine-induced protection subsides over time, and breakthrough infections are commonly observed, mostly reflecting the decay of neutralizing antibodies and the emergence of variant viruses with mutant spike proteins. Memory CD8 T cells are a potent weapon against viruses, as they are against tumour cells. Anti-SARS-CoV-2 memory CD8 T cells are induced by either natural infection or vaccination and can be potentially exploited against spike-mutated viruses. We offer here an overview of current research about the induction of anti-SARS-CoV-2 memory CD8 T cells by vaccination, in the context of prior knowledge on vaccines and on fundamental mechanisms of immunological memory. We focus particularly on how vaccination by two doses (prime/boost) or more (boosters) promotes differentiation of memory CD8 T cells, and on how the time-length of inter-dose intervals may influence the magnitude and persistence of CD8 T cell memory.
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Kim MJ, Chu KB, Kang HJ, Yoon KW, Eom GD, Mao J, Lee SH, Subbiah J, Kang SM, Moon EK, Quan FS. Protective Immunity Induced by Immunization with Baculovirus, Virus-like Particle, and Vaccinia Virus Expressing the AMA1 of Plasmodium berghei. Biomedicines 2022; 10:biomedicines10092289. [PMID: 36140395 PMCID: PMC9496152 DOI: 10.3390/biomedicines10092289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/06/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Heterologous prime–boost immunization regimens using various vaccine platforms demonstrated promising results against infectious diseases. Here, mice were sequentially immunized with the recombinant baculovirus (rBV), virus-like particle (VLP), and recombinant vaccinia virus (rVV) vaccines expressing the Plasmodium berghei apical membrane antigen 1 (AMA1) for protective efficacy evaluation. The rBV_V_rVV heterologous immunization regimen elicited high levels of parasite-specific IgG, IgG2a, and IgG2b antibody responses in sera. Upon P. berghei challenge infection, proliferations of germinal center B cells in the inguinal lymph nodes, as well as blood CD4+ and CD8+ T cells were induced. More importantly, rBV_V_rVV immunization significantly diminished the parasitemia and prevented drastic bodyweight loss in mice post-challenge infection with P. berghei. Our findings revealed that immunization with rBV, VLP, and rVV expressing the AMA1 conferred protection against P. berghei infection, providing evidence for the potential implementation of this strategy.
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Affiliation(s)
- Min-Ju Kim
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Ki-Back Chu
- Department of Medical Zoology, School of Medicine, Kyung Hee University, Seoul 02447, Korea
- Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, School of Medicine, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Hae-Ji Kang
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Keon-Woong Yoon
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Gi-Deok Eom
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Jie Mao
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Su-Hwa Lee
- Department of Medical Zoology, School of Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Jeeva Subbiah
- Center for Inflammation, Immunity, and Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303, USA
| | - Sang-Moo Kang
- Center for Inflammation, Immunity, and Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303, USA
| | - Eun-Kyung Moon
- Department of Medical Zoology, School of Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Fu-Shi Quan
- Department of Medical Zoology, School of Medicine, Kyung Hee University, Seoul 02447, Korea
- Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, School of Medicine, Graduate School, Kyung Hee University, Seoul 02447, Korea
- Correspondence:
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Li Q, Teng Z, Tao J, Shi W, Yang G, Zhang Y, Su X, Chen L, Xiu W, Yuwen L, Dong H, Mou Y. Elastic Nanovaccine Enhances Dendritic Cell-Mediated Tumor Immunotherapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2201108. [PMID: 35734820 DOI: 10.1002/smll.202201108] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 05/12/2022] [Indexed: 06/15/2023]
Abstract
Nanovaccine-based immunotherapy (NBI) has the ability to initiate dendritic cell (DC)-mediated tumor-specific immune responses and maintain long-term antitumor immune memory. To date, the mechanism by which the mechanical properties of nanoparticles alter the functions of DCs in NBI remains largely unclear. Here, a soft mesoporous organosilica-based nanovaccine (SMONV) is prepared and the elasticity-dependent effect of the nanovaccine on the underlying DC-mediated immune responses is studied. It is found that the elasticity results in greater internalization of SMONV by DCs, followed by the induction of substantial cytosolic delivery of antigens via endosomal escape, leading to effective DC maturation and antigen cross-presentation. Impressively, elasticity enables SMONV to enhance lymphatic drainage of antigens in vivo, thus stimulating robust humoral and cellular immunity. The results from therapeutic tumor vaccination further reveal that subcutaneously administered SMONV effectively suppresses tumor growth in tumor-bearing mice by evoking antigen-specific CD8+ T-cell immune responses, mitigating regulatory T-cell-mediated immunosuppression, and increasing central memory and effector memory T-cell populations. Furthermore, combinatorial immunization with SMONV and anti-PD-L1 blocking antibodies results in an amplified therapeutic effect on tumor-bearing mice. These findings reveal the elastic effect of the nanovaccine on DC-mediated immune responses, and the prepared SMONV represents a facile and powerful strategy for antitumor immunotherapy.
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Affiliation(s)
- Qiang Li
- Nanjing Stomatological Hospital, Medical School of Nanjing University, 30 Zhongyang Road, Nanjing, Jiangsu, 210008, P. R. China
| | - Zhaogang Teng
- Key Laboratory for Organic Electronics and Information Displays, Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Centre for Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu, 210023, P. R. China
| | - Jun Tao
- Key Laboratory for Organic Electronics and Information Displays, Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Centre for Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu, 210023, P. R. China
| | - Wenhui Shi
- Key Laboratory for Organic Electronics and Information Displays, Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Centre for Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu, 210023, P. R. China
| | - Guangwen Yang
- Nanjing Stomatological Hospital, Medical School of Nanjing University, 30 Zhongyang Road, Nanjing, Jiangsu, 210008, P. R. China
| | - Yu Zhang
- Nanjing Stomatological Hospital, Medical School of Nanjing University, 30 Zhongyang Road, Nanjing, Jiangsu, 210008, P. R. China
| | - Xiaodan Su
- Key Laboratory for Organic Electronics and Information Displays, Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Centre for Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu, 210023, P. R. China
| | - Lin Chen
- Nanjing Stomatological Hospital, Medical School of Nanjing University, 30 Zhongyang Road, Nanjing, Jiangsu, 210008, P. R. China
| | - Weijun Xiu
- Key Laboratory for Organic Electronics and Information Displays, Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Centre for Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu, 210023, P. R. China
| | - Lihui Yuwen
- Key Laboratory for Organic Electronics and Information Displays, Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Centre for Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu, 210023, P. R. China
| | - Heng Dong
- Nanjing Stomatological Hospital, Medical School of Nanjing University, 30 Zhongyang Road, Nanjing, Jiangsu, 210008, P. R. China
| | - Yongbin Mou
- Nanjing Stomatological Hospital, Medical School of Nanjing University, 30 Zhongyang Road, Nanjing, Jiangsu, 210008, P. R. China
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7
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Brendle S, Cladel N, Balogh K, Alam S, Christensen N, Meyers C, Hu J. A Comparative Study on Delivery of Externally Attached DNA by Papillomavirus VLPs and Pseudoviruses. Vaccines (Basel) 2021; 9:vaccines9121501. [PMID: 34960247 PMCID: PMC8709278 DOI: 10.3390/vaccines9121501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 12/10/2021] [Accepted: 12/14/2021] [Indexed: 01/07/2023] Open
Abstract
Human papillomavirus (HPV) 16 capsids have been chosen as a DNA delivery vehicle in many studies. Our preliminary studies suggest that HPV58 capsids could be better vehicles than HPV16 capsids to deliver encapsidated DNA in vitro and in vivo. In the current study, we compared HPV16, HPV58, and the cottontail rabbit papillomavirus (CRPV) capsids either as L1/L2 VLPs or pseudoviruses (PSVs) to deliver externally attached GFP-expressing DNA. Both rabbit and human cells were used to test whether there was a species-specific effect. DNA delivery efficiency was determined by quantifying either GFP-expressing cell populations or mean fluorescent intensities (MFI) by flow cytometry. Interestingly, CRPV and 58-VLPs and PSVs were significantly more efficient at delivering attached DNA when compared to 16-VLPs and PSVs. A capsid/DNA ratio of 2:1 showed the highest efficiency for delivering external DNA. The PSVs with papillomavirus DNA genomes also showed higher efficiency than those with irrelevant plasmid DNA. HPV16L1/58L2 hybrid VLPs displayed increased efficiency compared to HPV58L1/16L2 VLPs, suggesting that L2 may play a critical role in the delivery of attached DNA. Additionally, we demonstrated that VLPs increased in vivo infectivity of CRPV DNA in rabbits. We conclude that choosing CRPV or 58 capsids to deliver external DNA could improve DNA uptake in in vitro and in vivo models.
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Affiliation(s)
- Sarah Brendle
- Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (S.B.); (N.C.); (K.B.); (N.C.)
- Department of Pathology and Laboratory Medicine, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Nancy Cladel
- Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (S.B.); (N.C.); (K.B.); (N.C.)
- Department of Pathology and Laboratory Medicine, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Karla Balogh
- Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (S.B.); (N.C.); (K.B.); (N.C.)
- Department of Pathology and Laboratory Medicine, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Samina Alam
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (S.A.); (C.M.)
| | - Neil Christensen
- Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (S.B.); (N.C.); (K.B.); (N.C.)
- Department of Pathology and Laboratory Medicine, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (S.A.); (C.M.)
| | - Craig Meyers
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (S.A.); (C.M.)
| | - Jiafen Hu
- Jake Gittlen Laboratories for Cancer Research, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (S.B.); (N.C.); (K.B.); (N.C.)
- Department of Pathology and Laboratory Medicine, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
- Correspondence:
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8
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Production of the HBc Protein from Different HBV Genotypes in E. coli. Use of Reassociated HBc VLPs for Packaging of ss- and dsRNA. Microorganisms 2021; 9:microorganisms9020283. [PMID: 33573151 PMCID: PMC7912224 DOI: 10.3390/microorganisms9020283] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/22/2021] [Accepted: 01/26/2021] [Indexed: 01/04/2023] Open
Abstract
The core proteins (HBc) of the hepatitis B virus (HBV) genotypes A, B, C, D, E, F, and G were cloned and expressed in Escherichia coli (E. coli), and HBc-formed virus-like particles (VLPs) were purified with ammonium sulfate precipitation, gel filtration, and ion exchange chromatography (IEX). The best VLP yield was found for the HBc of the HBV genotypes D and G. For the HBc of the HBV genotypes D, F, and G, the possibility of dissociation and reassociation maintaining the native HBc structure was demonstrated. Single-stranded (ss) and double-stranded (ds) ribonucleic acid (RNA) was successfully packed into HBc VLPs for the HBV genotypes D and G.
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9
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SARS-CoV-2 vaccine research and development: Conventional vaccines and biomimetic nanotechnology strategies. Asian J Pharm Sci 2020; 16:136-146. [PMID: 32905011 PMCID: PMC7462629 DOI: 10.1016/j.ajps.2020.08.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/16/2020] [Accepted: 08/12/2020] [Indexed: 02/08/2023] Open
Abstract
The development of a massively producible vaccine against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a novel coronavirus, is essential for stopping the current coronavirus disease (COVID-19) pandemic. A vaccine must stimulate effective antibody and T cell responses in vivo to induce long-term protection. Scientific researchers have been developing vaccine candidates for the severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS) since the outbreaks of these diseases. The prevalence of new biotechnologies such as genetic engineering has shed light on the generation of vaccines against novel viruses. In this review, we present the status of the development of coronavirus vaccines, focusing particularly on the biomimetic nanoparticle technology platform, which is likely to have a major role in future developments of personalized medicine.
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10
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Mohsen MO, Augusto G, Bachmann MF. The 3Ds in virus-like particle based-vaccines: "Design, Delivery and Dynamics". Immunol Rev 2020; 296:155-168. [PMID: 32472710 PMCID: PMC7496916 DOI: 10.1111/imr.12863] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 04/17/2020] [Accepted: 04/27/2020] [Indexed: 12/16/2022]
Abstract
Vaccines need to be rationally designed in order be delivered to the immune system for maximizing induction of dynamic immune responses. Virus‐like particles (VLPs) are ideal platforms for such 3D vaccines, as they allow the display of complex and native antigens in a highly repetitive form on their surface and can easily reach lymphoid organs in intact form for optimal activation of B and T cells. Adjusting size and zeta potential may allow investigators to further fine‐tune delivery to lymphoid organs. An additional way to alter vaccine transfer to lymph nodes and spleen may be the formulation with micron‐sized adjuvants that creates a local depot and results in a slow release of antigen and adjuvant. Ideally, the adjuvant in addition stimulates the innate immune system. The dynamics of the immune response may be further enhanced by inclusion of Toll‐like receptor ligands, which many VLPs naturally package. Hence, considering the 3Ds in vaccine development may allow for enhancement of their attributes to tackle complex diseases, not usually amenable to conventional vaccine strategies.
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Affiliation(s)
- Mona O Mohsen
- Interim Translational Research Institute "iTRI", National Center for Cancer Care & Research (NCCCR), Doha, Qatar.,Department of BioMedical Research, Immunology RIA, University of Bern, Bern, Switzerland
| | - Gilles Augusto
- Department of BioMedical Research, Immunology RIA, University of Bern, Bern, Switzerland.,Jenner Institute, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Martin F Bachmann
- Department of BioMedical Research, Immunology RIA, University of Bern, Bern, Switzerland.,Jenner Institute, Nuffield Department of Medicine, University of Oxford, Oxford, UK
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11
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Cheng K, Kang Q, Zhao X. Biogenic nanoparticles as immunomodulator for tumor treatment. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2020; 12:e1646. [DOI: 10.1002/wnan.1646] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 04/26/2020] [Accepted: 04/28/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Keman Cheng
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST) Beijing China
- Department of Biomaterials, Key Laboratory of Biomedical Engineering of Fujian Province College of Materials, Xiamen University Xiamen Fujian China
| | - Qinglin Kang
- School of Chemistry and Molecular Biosciences The University of Queensland Brisbane Queensland Australia
| | - Xiao Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST) Beijing China
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12
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Shonyela SM, Feng B, Yang W, Yang G, Wang C. The regulatory effect of Lactobacillus rhamnosus GG on T lymphocyte and the development of intestinal villi in piglets of different periods. AMB Express 2020; 10:76. [PMID: 32303860 PMCID: PMC7165236 DOI: 10.1186/s13568-020-00980-1] [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: 02/11/2020] [Accepted: 02/26/2020] [Indexed: 12/20/2022] Open
Abstract
The maturation and development of T cells were not completed until T cells were selected in thymus. It was not until the early 1960s that j.f.a.p. discovered the importance of thymus in T cell development. Twelve healthy piglets were randomly divided into two groups, the experimental group (LGG group) and the control group (saline group). The LGG group piglets were given 1 ml LGG (6 × 109 CFU/ml) per day. The saline group was given 1 ml of normal saline per day. The piglets were slaughtered at 30 days and 45 days, respectively, and the MLN, jejunum and ileum PPs, LP of the piglets were taken. The expression of CD3+CD4+ T lymphocytes was detected by flow cytometry, and intestinal villi development was observed by intestinal paraffin section. The results showed that the flow cytometry results at 30 days and 45 days showed that the CD3+CD4+ T lymphocytes in the MLN group were significantly different from those in the saline group (P < 0.05, P < 0.01).The CD3+CD4+ T lymphocytes in the jejunum PP of piglets in LGG group were significantly different from those in saline group (P < 0.05). The CD3+CD4+ T lymphocytes in the ileum PP of the LGG group were significantly different from those in the saline group (P < 0.05, P < 0.01). CD3+CD4+ T lymphocytes and normal saline in the piglets of the LGG group There was a significant difference between the two groups (P < 0.001, P < 0.05). P < 0.001). HE staining results showed the length of the LGG group ileal villi in piglets at 30 days, 45 days was significantly different from that in normal saline group (P < 0.01, P < 0.01). LGG can also regulate the proliferation of T lymphocytes in the intestine of early weaned piglets at 30 days and 45 days increase the number of CD3+CD4+ T lymphocytes.
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13
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Virus-Like Particles and Nanoparticles for Vaccine Development against HCMV. Viruses 2019; 12:v12010035. [PMID: 31905677 PMCID: PMC7019358 DOI: 10.3390/v12010035] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/21/2019] [Accepted: 12/25/2019] [Indexed: 12/12/2022] Open
Abstract
Human cytomegalovirus (HCMV) infects more than 70% of the human population worldwide. HCMV is responsible for high morbidity and mortality in immunocompromised patients and remains the leading viral cause of congenital birth defects. Despite considerable efforts in vaccine and therapeutic development, HCMV infection still represents an unmet clinical need and a life-threatening disease in immunocompromised individuals and newborns. Immune repertoire interrogation of HCMV seropositive patients allowed the identification of several potential antigens for vaccine design. However, recent HCMV vaccine clinical trials did not lead to a satisfactory outcome in term of efficacy. Therefore, combining antigens with orthogonal technologies to further increase the induction of neutralizing antibodies could improve the likelihood of a vaccine to reach protective efficacy in humans. Indeed, presentation of multiple copies of an antigen in a repetitive array is known to drive a more robust humoral immune response than its soluble counterpart. Virus-like particles (VLPs) and nanoparticles (NPs) are powerful platforms for multivalent antigen presentation. Several self-assembling proteins have been successfully used as scaffolds to present complex glycoprotein antigens on their surface. In this review, we describe some key aspects of the immune response to HCMV and discuss the scaffolds that were successfully used to increase vaccine efficacy against viruses with unmet medical need.
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14
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Zhuang J, Holay M, Park JH, Fang RH, Zhang J, Zhang L. Nanoparticle Delivery of Immunostimulatory Agents for Cancer Immunotherapy. Theranostics 2019; 9:7826-7848. [PMID: 31695803 PMCID: PMC6831474 DOI: 10.7150/thno.37216] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Accepted: 06/26/2019] [Indexed: 02/07/2023] Open
Abstract
Immunostimulatory agents, including adjuvants, cytokines, and monoclonal antibodies, hold great potential for the treatment of cancer. However, their direct administration often results in suboptimal pharmacokinetics, vulnerability to biodegradation, and compromised targeting. More recently, encapsulation into biocompatible nanoparticulate carriers has become an emerging strategy for improving the delivery of these immunotherapeutic agents. Such approaches can address many of the challenges facing current treatment modalities by endowing additional protection and significantly elevating the bioavailability of the encapsulated payloads. To further improve the delivery efficiency and subsequent immune responses associated with current nanoscale approaches, biomimetic modifications and materials have been employed to create delivery platforms with enhanced functionalities. By leveraging nature-inspired design principles, these biomimetic nanodelivery vehicles have the potential to alter the current clinical landscape of cancer immunotherapy.
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Affiliation(s)
- Jia Zhuang
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA
| | - Maya Holay
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA
| | - Joon Ho Park
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA
| | - Ronnie H. Fang
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA
| | - Jie Zhang
- Cello Therapeutics, Inc., San Diego, CA 92121, USA
| | - Liangfang Zhang
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA
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15
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Mohsen MO, Speiser DE, Knuth A, Bachmann MF. Virus-like particles for vaccination against cancer. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2019; 12:e1579. [PMID: 31456339 PMCID: PMC6916610 DOI: 10.1002/wnan.1579] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/31/2019] [Accepted: 07/16/2019] [Indexed: 12/21/2022]
Abstract
Active immunotherapy of cancer aims to treat the disease by inducing effective cellular and humoral immune responses. Virus‐like particle‐based vaccines have evolved dramatically over the last few decades, greatly reducing morbidity and mortality of several infectious diseases and expectedly preventing cervical cancer caused by human papilloma virus. In contrast to these broad successes of disease prevention, therapeutic cancer vaccines remain to demonstrate clinical benefit. Yet, several preclinical and clinical trials have revealed promising results and are paving the way for medical breakthroughs. This study reviews and discusses the recent preclinical development and clinical trials in this field. This article is categorized under: Biology‐Inspired Nanomaterials > Protein and Virus‐Based Structures Nanotechnology Approaches to Biology > Nanoscale Systems in Biology
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Affiliation(s)
- Mona O Mohsen
- The Interim Translational Research Institute "iTRI", National Center for Cancer Care & Research (NCCCR), Doha, Qatar.,Department of BioMedical Research, Immunology RIA, University of Bern, Bern, Switzerland
| | - Daniel E Speiser
- Department of Oncology, University of Lausanne, Lausanne, Switzerland
| | - Alexander Knuth
- The Interim Translational Research Institute "iTRI", National Center for Cancer Care & Research (NCCCR), Doha, Qatar
| | - Martin F Bachmann
- Department of BioMedical Research, Immunology RIA, University of Bern, Bern, Switzerland.,Nuffield Department of Medicine, Jenner Institute, University of Oxford, Oxford, UK
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16
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Mohsen MO, Vogel M, Riether C, Muller J, Salatino S, Ternette N, Gomes AC, Cabral-Miranda G, El-Turabi A, Ruedl C, Kundig TM, Dermime S, Knuth A, Speiser DE, Bachmann MF. Targeting Mutated Plus Germline Epitopes Confers Pre-clinical Efficacy of an Instantly Formulated Cancer Nano-Vaccine. Front Immunol 2019; 10:1015. [PMID: 31156619 PMCID: PMC6532571 DOI: 10.3389/fimmu.2019.01015] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 04/23/2019] [Indexed: 12/23/2022] Open
Abstract
Personalized cancer vaccines hold promises for future cancer therapy. Targeting neoantigens is perceived as more beneficial compared to germline, non-mutated antigens. However, it is a practical challenge to identify and vaccinate patients with neoantigens. Here we asked whether two neoantigens are sufficient, and whether the addition of germline antigens would enhance the therapeutic efficacy. We developed and used a personalized cancer nano-vaccine platform based on virus-like particles loaded with toll-like receptor ligands. We generated three sets of multi-target vaccines (MTV) to immunize against the aggressive B16F10 murine melanoma: one set based on germline epitopes (GL-MTV) identified by immunopeptidomics, another set based on mutated epitopes (Mutated-MTV) predicted by whole exome sequencing and a last set combines both germline and mutated epitopes (Mix-MTV). Our results demonstrate that both germline and mutated epitopes induced protection but the best therapeutic effect was achieved with the combination of both. Our platform is based on Cu-free click chemistry used for peptide-VLP coupling, thus enabling bedside production of a personalized cancer vaccine, ready for clinical translation.
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Affiliation(s)
- Mona O Mohsen
- Nuffield Department of Medicine, Jenner Institute, University of Oxford, Oxford, United Kingdom.,Department of BioMedical Research, Immunology RIA, University Hospital of Bern, Bern, Switzerland.,National Center for Cancer Care & Research, Doha, Qatar
| | - Monique Vogel
- Department of BioMedical Research, Immunology RIA, University Hospital of Bern, Bern, Switzerland
| | - Carsten Riether
- Department of Medical Oncology, University Hospital of Bern, Bern, Switzerland
| | - Julius Muller
- Nuffield Department of Medicine, Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Silvia Salatino
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
| | - Nicola Ternette
- Nuffield Department of Medicine, Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Ariane C Gomes
- Nuffield Department of Medicine, Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Gustavo Cabral-Miranda
- Department of BioMedical Research, Immunology RIA, University Hospital of Bern, Bern, Switzerland
| | - Aadil El-Turabi
- Nuffield Department of Medicine, Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Christiane Ruedl
- Division of Molecular Genetics and Cell Biology, Nanyang Technological University, Singapore, Singapore
| | - Thomas M Kundig
- Department of Dermatology, University of Zurich, Zurich, Switzerland
| | - Said Dermime
- National Center for Cancer Care & Research, Doha, Qatar
| | | | - Daniel E Speiser
- Department of Oncology, University of Lausanne, Lausanne, Switzerland
| | - Martin F Bachmann
- Nuffield Department of Medicine, Jenner Institute, University of Oxford, Oxford, United Kingdom.,Department of BioMedical Research, Immunology RIA, University Hospital of Bern, Bern, Switzerland
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17
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Xu L, Li Z, Su Z, Yang Y, Ma G, Yu R, Zhang S. Development of meningococcal polysaccharide conjugate vaccine that can elicit long-lasting and strong cellular immune response with hepatitis B core antigen virus-like particles as a novel carrier protein. Vaccine 2019; 37:956-964. [PMID: 30655174 DOI: 10.1016/j.vaccine.2018.12.073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Revised: 11/18/2018] [Accepted: 12/30/2018] [Indexed: 11/30/2022]
Abstract
Neisseria meningitidis caused meningitis is life-threatening acute infection with high fatality and high frequency of severe sequelae. Meningococcal capsular polysaccharides can be used to prevent meningococcal disease; while conjugating the polysaccharides to carrier protein was found necessary to improve the immunogenicity and induce memory responses in infants and young children. Nevertheless, repeated administration of glycoconjugate vaccines might lead to carrier-induced epitope suppression due to limited number of carrier proteins. Here in this study, full-length hepatitis B core antigen virus-like particles (HBc VLPs) was used as a novel potential carrier protein for conjugation of meningococcal group C polysaccharides (CPS) with heterobifunctional polyethylene glycol (PEG) of different length (2, 5 and 10 kDa) as linkers. The physiochemical properties of the CPS-PEG-HBc conjugate vaccines were fully characterized. The TEM, DLS, native agarose gel electrophoresis, and HPLC analyses all confirmed the successful conjugation. As compared to plain CPS and the physical mixture of CPS and HBc, the immunization with the conjugate vaccines can generate about 10 times increase in CPS specific IgG titers with a significant boosting effect. HBc conjugation induced a shift to a Th1 cellular immune type response, as assessed by the increased IgG2a subclass production. In addition, vaccination of the conjugate vaccines elicited much enhanced avidity functional antibody and long-lasting immunological memory. IgG titers elicited by CPS-P2k-HBc, CPS-P5k-HBc and CPS-P10k-HBc at week 18 maintained 38.1%, 17.9% and 33.3% of their peak values. All these results demonstrated that HBc VLPs can be used as potential carrier protein to develop polysaccharide conjugate vaccines effective in eliciting long-lasting and strong cellular immune response.
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Affiliation(s)
- Lingling Xu
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, China; State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhengjun Li
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Zhiguo Su
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Yanli Yang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Guanghui Ma
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Rong Yu
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Songping Zhang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
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18
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Neek M, Kim TI, Wang SW. Protein-based nanoparticles in cancer vaccine development. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2019; 15:164-174. [PMID: 30291897 PMCID: PMC6289732 DOI: 10.1016/j.nano.2018.09.004] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 09/17/2018] [Accepted: 09/24/2018] [Indexed: 01/09/2023]
Abstract
Peptide and protein-based cancer vaccines usually fail to elicit efficient immune responses against tumors. However, delivery of these peptides and proteins as components within caged protein nanoparticles has shown promising improvements in vaccine efficacy. Advantages of protein nanoparticles over other vaccine platforms include their highly organized structures and symmetry, biodegradability, ability to be specifically functionalized at three different interfaces (inside and outside the protein cage, and between subunits in macromolecular assembly), and ideal size for vaccine delivery. In this review, we discuss different classes of virus-like particles and caged protein nanoparticles that have been used as vehicles to transport and increase the interaction of cancer vaccine components with the immune system. We review the effectiveness of these protein nanoparticles towards inducing and elevating specific immune responses, which are needed to overcome the low immunogenicity of the tumor microenvironment.
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Affiliation(s)
- Medea Neek
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, CA, USA
| | - Tae Il Kim
- Department of Biomedical Engineering, University of California, Irvine, CA, USA
| | - Szu-Wen Wang
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, CA, USA; Department of Biomedical Engineering, University of California, Irvine, CA, USA; Chao Family Comprehensive Cancer Center, University of California, Irvine, CA, USA.
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19
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Donaldson B, Lateef Z, Walker GF, Young SL, Ward VK. Virus-like particle vaccines: immunology and formulation for clinical translation. Expert Rev Vaccines 2018; 17:833-849. [PMID: 30173619 PMCID: PMC7103734 DOI: 10.1080/14760584.2018.1516552] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Virus-like particle (VLP) vaccines face significant challenges in their translation from laboratory models, to routine clinical administration. While some VLP vaccines thrive and are readily adopted into the vaccination schedule, others are restrained by regulatory obstacles, proprietary limitations, or finding their niche amongst the crowded vaccine market. Often the necessity to supplant an existing vaccination regimen possesses an immediate obstacle for the development of a VLP vaccine, despite any preclinical advantages identified over the competition. Novelty, adaptability and formulation compatibility may prove invaluable in helping place VLP vaccines at the forefront of vaccination technology. AREAS COVERED The purpose of this review is to outline the diversity of VLP vaccines, VLP-specific immune responses, and to explore how modern formulation and delivery techniques can enhance the clinical relevance and overall success of VLP vaccines. EXPERT COMMENTARY The role of formation science, with an emphasis on the diversity of immune responses induced by VLP, is underrepresented amongst clinical trials for VLP vaccines. Harnessing such diversity, particularly through the use of combinations of select excipients and adjuvants, will be paramount in the development of VLP vaccines.
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Affiliation(s)
- Braeden Donaldson
- a Department of Microbiology and Immunology , School of Biomedical Sciences, University of Otago , Dunedin , New Zealand.,b Department of Pathology , Dunedin School of Medicine, University of Otago , Dunedin , New Zealand
| | - Zabeen Lateef
- c Department of Pharmacology and Toxicology , School of Biomedical Sciences, University of Otago , Dunedin , New Zealand
| | - Greg F Walker
- d School of Pharmacy , University of Otago , Dunedin , New Zealand
| | - Sarah L Young
- b Department of Pathology , Dunedin School of Medicine, University of Otago , Dunedin , New Zealand
| | - Vernon K Ward
- a Department of Microbiology and Immunology , School of Biomedical Sciences, University of Otago , Dunedin , New Zealand
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20
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Mohsen MO, Gomes AC, Vogel M, Bachmann MF. Interaction of Viral Capsid-Derived Virus-Like Particles (VLPs) with the Innate Immune System. Vaccines (Basel) 2018; 6:vaccines6030037. [PMID: 30004398 PMCID: PMC6161069 DOI: 10.3390/vaccines6030037] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 06/21/2018] [Accepted: 06/28/2018] [Indexed: 02/06/2023] Open
Abstract
Virus-like particles (VLPs) derived from viral nucleocapsids are an important class of nanoparticles. The structure, uniformity, stability, and function of these VLPs have attracted scientists in utilizing them as a unique tool in various applications in biomedical fields. Their interaction with the innate immune system is of major importance for the adaptive immune response they induce. The innate immune cells and molecules recognize and interact with VLPs on the basis of two major characteristics: size and surface geometry. This review discusses the interaction of viral capsid-derived VLPs with the innate immune system.
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Affiliation(s)
- Mona O Mohsen
- Jenner Institute, University of Oxford, Oxford OX3 7BN, UK.
- Qatar Foundation, Doha, Qatar.
- Inselspital, Universitatsklinik RIA, Immunologie, 3010 Bern, Switzerland.
| | - Ariane C Gomes
- Jenner Institute, University of Oxford, Oxford OX3 7BN, UK.
| | - Monique Vogel
- Inselspital, Universitatsklinik RIA, Immunologie, 3010 Bern, Switzerland.
| | - Martin F Bachmann
- Jenner Institute, University of Oxford, Oxford OX3 7BN, UK.
- Inselspital, Universitatsklinik RIA, Immunologie, 3010 Bern, Switzerland.
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21
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A novel candidate HPV vaccine: MS2 phage VLP displaying a tandem HPV L2 peptide offers similar protection in mice to Gardasil-9. Antiviral Res 2017; 147:116-123. [PMID: 28939477 DOI: 10.1016/j.antiviral.2017.09.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 09/13/2017] [Accepted: 09/18/2017] [Indexed: 12/15/2022]
Abstract
Human papillomaviruses (HPVs) cause approximately 5% of cancer cases worldwide. Fortunately, three prophylactic vaccines have been approved to protect against HPV infections. Gardasil-9, the most recent HPV vaccine, is predicted to offer protection against the HPV types that cause ∼90% of cervical cancer, 86% of HPV-associated penile cancers, and ∼93% of HPV-associated head & neck cancers. As an alternative to Gardasil-9, we developed and tested a novel candidate vaccine targeting conserved epitopes in the HPV minor capsid protein, L2. We displayed a tandem HPV31/16L2 peptide (amino acid 17-31) or consensus peptides from HPV L2 (amino acid 69-86 or 108-122) on the surface of bacteriophage MS2 virus-like particles (VLPs). Mice immunized with the MS2 VLPs displaying the tandem peptide or immunized with a mixture of VLPs (displaying the tandem peptide and consensus peptide 69-86) elicited high titer antibodies against individual L2 epitopes. Moreover, vaccinated mice were protected from cervicovaginal infection with HPV pseudoviruses 16, 31, 45, 58 and sera from immunized mice neutralized HPV pseudoviruses 18 and 33 at levels similar to mice immunized with Gardasil-9. These results suggest that immunization with a tandem, L2 peptide or a low valency mixture of L2 peptide-displaying VLPs can provide broad protection against multiple HPV types.
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22
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Gomes AC, Flace A, Saudan P, Zabel F, Cabral-Miranda G, Turabi AE, Manolova V, Bachmann MF. Adjusted Particle Size Eliminates the Need of Linkage of Antigen and Adjuvants for Appropriated T Cell Responses in Virus-Like Particle-Based Vaccines. Front Immunol 2017; 8:226. [PMID: 28321220 PMCID: PMC5337491 DOI: 10.3389/fimmu.2017.00226] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 02/16/2017] [Indexed: 11/16/2022] Open
Abstract
Since the discovery of the first virus-like particle (VLP) derived from hepatitis B virus in 1980 (1), the field has expanded substantially. Besides successful use of VLPs as safe autologous virus-targeting vaccines, the powerful immunogenicity of VLPs has been also harnessed to generate immune response against heterologous and even self-antigens (2–4). Linking adjuvants to VLPs displaying heterologous antigen ensures simultaneous delivery of all vaccine components to the same antigen-presenting cells. As a consequence, antigen-presenting cells, such as dendritic cells, will process and present the antigen displayed on VLPs while receiving costimulatory signals by the VLP-incorporated adjuvant. Similarly, antigen-specific B cells recognizing the antigen linked to the VLP are simultaneously exposed to the adjuvant. Here, we demonstrate in mice that physical association of antigen, carrier (VLPs), and adjuvant is more critical for B than T cell responses. As a model system, we used the E7 protein from human papilloma virus, which spontaneously forms oligomers with molecular weight ranging from 158 kDa to 10 MDa at an average size of 50 nm. E7 oligomers were either chemically linked or simply mixed with VLPs loaded with DNA rich in non-methylated CG motifs (CpGs), a ligand for toll-like receptor 9. E7-specific IgG responses were strongly enhanced if the antigen was linked to the VLPs. In contrast, both CD4+ and CD8+ T cell responses as well as T cell-mediated protection against tumor growth were comparable for linked and mixed antigen formulations. Therefore, our data show that B cell but not T cell responses require antigen-linkage to the carrier and adjuvant for optimal vaccination outcome.
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Affiliation(s)
| | - Anna Flace
- Cytos Biotechnology AG , Schlieren , Switzerland
| | | | | | | | | | | | - Martin F Bachmann
- The Jenner Institute, Oxford University, Oxford, UK; Immunology, Inselspital, Bern, Switzerland
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23
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Mohsen MO, Gomes AC, Cabral-Miranda G, Krueger CC, Leoratti FM, Stein JV, Bachmann MF. Delivering adjuvants and antigens in separate nanoparticles eliminates the need of physical linkage for effective vaccination. J Control Release 2017; 251:92-100. [PMID: 28257987 DOI: 10.1016/j.jconrel.2017.02.031] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 02/26/2017] [Accepted: 02/27/2017] [Indexed: 01/12/2023]
Abstract
DNA rich in unmethylated CG motifs (CpGs) engage Toll-Like Receptor 9 (TLR-9) in endosomes and are well described stimulators of the innate and adaptive immune system. CpGs therefore can efficiently improve vaccines' immunogenicity. Packaging CpGs into nanoparticles, in particular into virus-like particles (VLPs), improves the pharmacological characteristics of CpGs as the protein shell protects them from DNAse activity and delivers the oligomers to the endosomal compartments of professional antigen presenting cells (APCs). The current consensus in packaging and delivering CpGs in VLP-based vaccines is that both adjuvants and antigens should be kept in close proximity (i.e. physically linked) to ensure delivery of antigens and adjuvants to the same APCs. In the current study, we harness the draining properties of the lymphatic system and show that also non-linked VLPs are efficiently co-delivered to the same APCs in lymph nodes. Specifically, we have shown that CpGs can be packaged in one VLP and mixed with another VLP displaying the antigen prior to administration in vivo. Both VLPs efficiently reached the same draining lymph node where they were taken up and processed by the same APCs, namely dendritic cells and macrophages. This resulted in induction of specific CTLs producing cytokines and killing target cells in vivo at levels seen when using VLPs containing both CpGs and chemically conjugated antigen. Thus, delivery of antigens and adjuvants in separate nanoparticles eliminates the need of physical conjugation and thus can be beneficial when designing precision medicine VLP-based vaccines or help to re-formulate existing VLP vaccines not naturally carrying immunostimulatory sequences.
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Affiliation(s)
- Mona O Mohsen
- University of Oxford, Roosevelt Dr, Oxford OX3 7BN, UK; Qatar Foundation (QRLP), Doha, State of Qatar.
| | | | | | - Caroline C Krueger
- Inselspital, Universitatsklinik RIA, Immunologie, Sahlihaus 1, 3010 Bern, Switzerland
| | - Fabiana Ms Leoratti
- Inselspital, Universitatsklinik RIA, Immunologie, Sahlihaus 1, 3010 Bern, Switzerland
| | - Jens V Stein
- Theodor Kocher Institute, University of Bern, Freiestrasse 1, 3012 Bern, Switzerland
| | - Martin F Bachmann
- University of Oxford, Roosevelt Dr, Oxford OX3 7BN, UK; Inselspital, Universitatsklinik RIA, Immunologie, Sahlihaus 1, 3010 Bern, Switzerland
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24
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Gomes AC, Mohsen M, Bachmann MF. Harnessing Nanoparticles for Immunomodulation and Vaccines. Vaccines (Basel) 2017; 5:E6. [PMID: 28216554 PMCID: PMC5371742 DOI: 10.3390/vaccines5010006] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 01/23/2017] [Accepted: 01/25/2017] [Indexed: 12/13/2022] Open
Abstract
The first successful use of nanoparticles (NPs) for vaccination was reported almost 40 years ago with a virus-like particle-based vaccine against Hepatitis B. Since then, the term NP has been expanded to accommodate a large number of novel nano-sized particles engineered from a range of materials. The great interest in NPs is likely not only a result of the two successful vaccines against hepatitis B and Human Papilloma Virus (HPV) that use this technology, but also due to the versatility of those small-sized particles, as indicated by the wide range of applications reported so far, ranging from medicinal and cosmetics to purely technical applications. In this review, we will focus on the use of NPs, especially virus-like particles (VLPs), in the field of vaccines and will discuss their employment as vaccines, antigen display platforms, adjuvants and drug delivery systems.
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Affiliation(s)
- Ariane C Gomes
- The Jenner Institute, Oxford University, Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, UK.
| | - Mona Mohsen
- The Jenner Institute, Oxford University, Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, UK.
| | - Martin F Bachmann
- The Jenner Institute, Oxford University, Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, UK.
- Inselspital, Universitatsspital, Sahlihaus 1, 3010 Bern, Switzerland.
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Pumpens P, Renhofa R, Dishlers A, Kozlovska T, Ose V, Pushko P, Tars K, Grens E, Bachmann MF. The True Story and Advantages of RNA Phage Capsids as Nanotools. Intervirology 2016; 59:74-110. [DOI: 10.1159/000449503] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 08/30/2016] [Indexed: 11/19/2022] Open
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26
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Pumpens P, Grens E. The true story and advantages of the famous Hepatitis B virus core particles: Outlook 2016. Mol Biol 2016. [DOI: 10.1134/s0026893316040099] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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27
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Zhai L, Tumban E. Gardasil-9: A global survey of projected efficacy. Antiviral Res 2016; 130:101-9. [PMID: 27040313 DOI: 10.1016/j.antiviral.2016.03.016] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 03/29/2016] [Indexed: 02/07/2023]
Abstract
Human papillomaviruses (HPVs) are the causative agents of human neoplasias such as warts and cancers. There are ∼19 HPV types associated with cancers, which has made it very challenging for first generation HPV vaccines to offer complete protection against all cancer-causing HPV types. Recently, a second generation HPV vaccine, Gardasil-9, has been approved to protect against more HPV types. Worldwide, Gardasil-9 will protect against HPV types associated with ∼90% of cervical cancer case in women and 80-95% of other HPV-associated anogenital cancers in both men and women. However, due to variation in HPV-type specific prevalence and distribution, the vaccine will offer different percentages of protection in different geographical regions; Gardasil-9 will offer protection against HPV types associated with ∼87.7% of cervical cancers in Asia, 91.7% in Africa, 92% in North America, 90.9% in Europe, 89.5% in Latin America & the Caribbean, and 86.5% in Australia. Because of this, Pap smear screening and testing for HPV types not included in Gardasil-9 will need to continue, especially in HIV/AIDS patients. In order to achieve complete protection against all HPV types that cause cervical cancer, a third-generation HPV vaccine is needed.
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Affiliation(s)
- Lukai Zhai
- Department of Biological Sciences, Michigan Technological University, Houghton, MI 49931, United states
| | - Ebenezer Tumban
- Department of Biological Sciences, Michigan Technological University, Houghton, MI 49931, United states.
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28
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Engineering virus-like particles as vaccine platforms. Curr Opin Virol 2016; 18:44-9. [PMID: 27039982 DOI: 10.1016/j.coviro.2016.03.001] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 02/11/2016] [Accepted: 03/08/2016] [Indexed: 02/03/2023]
Abstract
Virus-like particles (VLPs) have been utilized as vaccine platforms to increase the immunogenicity of heterologous antigens. A variety of diverse VLP types can serve as vaccine platforms, and research has focused on engineering VLPs to improve their efficacy as vaccines, enhance their stability, and allow for more versatile display of antigens. Here, we review selected VLP vaccine platforms, highlight efforts to improve these platforms through structure-informed rational design, and point to areas of future research that will assist in these efforts.
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29
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Roose K, De Baets S, Schepens B, Saelens X. Hepatitis B core-based virus-like particles to present heterologous epitopes. Expert Rev Vaccines 2013; 12:183-98. [PMID: 23414409 DOI: 10.1586/erv.12.150] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Since the first effort to recombinantly express the hepatitis B core protein (HBc) in bacteria, the remarkable virion-like structure has fuelled interest in unraveling the structural and antigenic properties of this protein. Initial studies proved HBc virus-like particles to possess strong immunogenic properties, which can be conveyed to linked antigens. More than 35 years later, numerous studies have been performed using HBc as a carrier protein for antigens derived from over a dozen different pathogens and diseases. In this review, the authors highlight the intriguing features of HBc as carrier and antigen, illustrated by some examples and experimental results that underscore the value of HBc as an antigen-presenting platform. Two of these HBc fusions, targeting influenza A and malaria, have even progressed into clinical testing. In the future, the HBc-based virus-like particles platform will probably continue to be used for the display of poorly immunogenic antigens, mainly because virus-like particle formation by HBc capsomers is compatible with nearly any available recombinant gene expression system.
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Affiliation(s)
- Kenny Roose
- Department for Molecular Biomedical Research, VIB, 9052 Ghent, Belgium
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30
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Patterson DP, Rynda-Apple A, Harmsen AL, Harmsen AG, Douglas T. Biomimetic antigenic nanoparticles elicit controlled protective immune response to influenza. ACS NANO 2013; 7:3036-44. [PMID: 23540530 PMCID: PMC3773536 DOI: 10.1021/nn4006544] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Here we present a biomimetic strategy toward nanoparticle design for controlled immune response through encapsulation of conserved internal influenza proteins on the interior of virus-like particles (VLPs) to direct CD8+ cytotoxic T cell protection. Programmed encapsulation and sequestration of the conserved nucleoprotein (NP) from influenza on the interior of a VLP, derived from the bacteriophage P22, results in a vaccine that provides multistrain protection against 100 times lethal doses of influenza in an NP specific CD8+ T cell-dependent manner. VLP assembly and encapsulation of the immunogenic NP cargo protein is the result of a genetically programmed self-assembly making this strategy amendable to the quick production of vaccines to rapidly emerging pathogens. Addition of adjuvants or targeting molecules were not required for eliciting the protective response.
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Affiliation(s)
- Dustin P. Patterson
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59717, USA
- Center for Bio-Inspired Nanomaterials, Montana State University, Bozeman, MT 59717, USA
| | - Agnieszka Rynda-Apple
- Department of Immunology and Infectious Diseases, Montana State University, Bozeman, MT 59717, USA
| | - Ann L. Harmsen
- Department of Immunology and Infectious Diseases, Montana State University, Bozeman, MT 59717, USA
| | - Allen G. Harmsen
- Department of Immunology and Infectious Diseases, Montana State University, Bozeman, MT 59717, USA
- To whom correspondence should be addressed, , phone (406) 994-6566, , phone (406) 994-7626
| | - Trevor Douglas
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59717, USA
- Center for Bio-Inspired Nanomaterials, Montana State University, Bozeman, MT 59717, USA
- To whom correspondence should be addressed, , phone (406) 994-6566, , phone (406) 994-7626
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31
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Development of a new hydrogen peroxide–based vaccine platform. Nat Med 2012; 18:974-9. [PMID: 22635006 DOI: 10.1038/nm.2763] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Accepted: 10/25/2011] [Indexed: 01/04/2023]
Abstract
Safe and effective vaccines are crucial for maintaining public health and reducing the global burden of infectious disease. Here we introduce a new vaccine platform that uses hydrogen peroxide (H(2)O(2)) to inactivate viruses for vaccine production. H(2)O(2) rapidly inactivates both RNA and DNA viruses with minimal damage to antigenic structure or immunogenicity and is a highly effective method when compared with conventional vaccine inactivation approaches such as formaldehyde or β-propiolactone. Mice immunized with H(2)O(2)-inactivated lymphocytic choriomeningitis virus (LCMV) generated cytolytic, multifunctional virus-specific CD8(+) T cells that conferred protection against chronic LCMV infection. Likewise, mice vaccinated with H(2)O(2)-inactivated vaccinia virus or H(2)O(2)-inactivated West Nile virus showed high virus-specific neutralizing antibody titers and were fully protected against lethal challenge. Together, these studies demonstrate that H(2)O(2)-based vaccines are highly immunogenic, provide protection against a range of viral pathogens in mice and represent a promising new approach to future vaccine development.
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32
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Mazeike E, Gedvilaite A, Blohm U. Induction of insert-specific immune response in mice by hamster polyomavirus VP1 derived virus-like particles carrying LCMV GP33 CTL epitope. Virus Res 2011; 163:2-10. [PMID: 21864590 PMCID: PMC7114473 DOI: 10.1016/j.virusres.2011.08.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Revised: 08/07/2011] [Accepted: 08/08/2011] [Indexed: 01/12/2023]
Abstract
Hamster polyomavirus (HaPyV) major capsid protein VP1 based chimeric virus-like particles (VLPs) carrying model GP33 CTL epitope derived from Lymphocytic choriomeningitis virus (LCMV) were generated in yeast and examined for their capability to induce CTL response in mice. Chimeric VP1-GP33 VLPs were effectively processed in antigen presenting cells in vitro and in vivo and induced antigen-specific CD8+ T cell proliferation. Mice immunized only once with VP1-GP33 VLPs without adjuvant developed an effective GP33-specific memory T cell response: 70% were fully and 30% partially protected from LCMV infection. Moreover, aggressive growth of tumors expressing GP33 was significantly delayed in these mice in vivo. Therefore, HaPyV VP1-derived VLP harboring CTL epitopes are attractive vaccine candidates for the induction of insert-specific CTL immune response.
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Affiliation(s)
- Egle Mazeike
- Vilnius University, Institute of Biotechnology, Graiciuno 8, LT-02241 Vilnius, Lithuania
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33
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Chen Z, Cao J, Liao X, Ke J, Zhu S, Zhao P, Qi Z. Plasmids Enriched with CpG Motifs Activate Human Peripheral Blood Mononuclear Cells In Vitro and Enhance Th-1 Immune Responses to Hepatitis B Surface Antigen in Mice. Viral Immunol 2011; 24:199-209. [DOI: 10.1089/vim.2010.0116] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Affiliation(s)
- Zhihui Chen
- Department of Infectious Diseases, Affiliated Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Jie Cao
- Department of Microbiology, Shanghai Key Laboratory of Medical Biodefense, Second Military Medical University, Shanghai, China
| | - Xiaoling Liao
- Department of Microbiology, Shanghai Key Laboratory of Medical Biodefense, Second Military Medical University, Shanghai, China
| | - Jinshan Ke
- Department of Microbiology, Shanghai Key Laboratory of Medical Biodefense, Second Military Medical University, Shanghai, China
| | - Shiying Zhu
- Department of Microbiology, Shanghai Key Laboratory of Medical Biodefense, Second Military Medical University, Shanghai, China
| | - Ping Zhao
- Department of Microbiology, Shanghai Key Laboratory of Medical Biodefense, Second Military Medical University, Shanghai, China
| | - Zhongtian Qi
- Department of Microbiology, Shanghai Key Laboratory of Medical Biodefense, Second Military Medical University, Shanghai, China
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34
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Liu F, Shang J, Song S, Zheng L, Zhang K, You H, Zhang H, Wang J. Augmented induction of antigen-specific cytotoxic T cell responses against canine hepatitis by co-immunization with pVAX1-CpG-Loop and adjuvants in BALB/c mice. Exp Anim 2011; 59:579-88. [PMID: 21030785 DOI: 10.1538/expanim.59.579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The objective of this study was to obtain better antigen specific cytotoxic T cell responses in vivo. We examined the augmented induction of antigen-specific cytotoxic T cell responses to co-administration of oligonucleotides (CpG-ODN), dimethyl dioctadecyl ammonium bromide (DDA), and Lipofectamine™ 2000 with a DNA vaccine (pVAX1-CpG-Loop) and boosting with pVAX1-CpG-Loop in BALB/c mice. The results show that Loop protein-specific T cell proliferation, cytotoxic T cell activity, and the production of CD8+ T cells and IFN-γ were enhanced after co-immunization of mice with adjuvants and pVAX1-CpG-Loop. We demonstrated that significant T cell-mediated immune responses were induced in the mice with the help of DDA, CpG-ODN and Lipofectamine™ 2000.
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Affiliation(s)
- Fuying Liu
- Hebei Key Lab of Laboratory Animal, Department of Molecular Biology, Hebei Medical University, Shijiazhuang, China
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35
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Zaiss DMW, Boog CJP, van Eden W, Sijts AJAM. Considerations in the design of vaccines that induce CD8 T cell mediated immunity. Vaccine 2010; 28:7716-22. [PMID: 20851090 DOI: 10.1016/j.vaccine.2010.08.101] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2010] [Revised: 08/27/2010] [Accepted: 08/31/2010] [Indexed: 12/22/2022]
Abstract
The protective capacity of many currently used vaccines is based on induction of neutralizing antibodies. Many pathogens, however, have adapted themselves in different ways to escape antibody-based immune protection. In particular, for those infections against which conventional neutralizing antibody-based vaccinations appear challenging, CD8 T-cells are considered to be promising candidates for vaccine targeting. The design of vaccines that induce robust and long-lasting protective CD8 T-cell responses however imposes new challenges, as many factors such as kinetics and efficiency of antigen-processing and presentation by antigen presenting cells, T-cell repertoire and cytokine environment during T cell priming contribute to the specificity and functionality of CD8 T-cell responses. In the following, we review the most prominent aspects that underlie CD8 T-cell induction and discuss how this knowledge may help to improve the design of efficient CD8 T-cell inducing vaccines.
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Affiliation(s)
- D M W Zaiss
- Division of Immunology, Faculty of Veterinary Medicine, University of Utrecht, The Netherlands
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36
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Keller SA, Schwarz K, Manolova V, von Allmen CE, Kinzler MG, Bauer M, Muntwiler S, Saudan P, Bachmann MF. Innate signaling regulates cross-priming at the level of DC licensing and not antigen presentation. Eur J Immunol 2010; 40:103-12. [PMID: 19877013 DOI: 10.1002/eji.200939559] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Innate stimuli, such as TLR ligands, are known to greatly facilitate cross-priming. Currently it is unclear whether innate stimuli enhance cross-priming at the level of cross-presentation or at the level of T-cell priming. In this study, we addressed this question by measuring cross-presentation as well as cross-priming by virus-like particles (VLP) displaying peptide p33 derived of lymphocytic choriomeningitis virus. Innate stimuli were varied by either packaging different TLR ligands into virus-like particles or using mice deficient in two key molecules of TLR-signaling, namely the adaptor molecule MyD88 as well as IFN-alpha/beta receptor. While efficient cross-presentation occurred despite strongly reduced activation of DC in the absence of TLR ligand-mediated signals, T-cell priming was abolished. Thus, innate stimuli regulate cross-priming at the level of DC licensing for T-cell activation and not antigen presentation.
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37
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Ding FX, Xian X, Guo YJ, Liu Y, Wang Y, Yang F, Wang YZ, Song SX, Wang F, Sun SH. A preliminary study on the activation and antigen presentation of hepatitis B virus core protein virus-like particle-pulsed bone marrow-derived dendritic cells. MOLECULAR BIOSYSTEMS 2010; 6:2192-9. [DOI: 10.1039/c005222a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Buonaguro FM, Tornesello ML, Buonaguro L. Virus-like particle vaccines and adjuvants: the HPV paradigm. Expert Rev Vaccines 2009; 8:1379-98. [PMID: 19803760 DOI: 10.1586/erv.09.81] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Complex antigen structures currently represent the most-studied approach for prophylactic as well as therapeutic vaccines. Different types of complex vaccines, including virus-like particles and virosomes, have been developed depending on the nature of the viral pathogen they are trying to replicate (enveloped vs naked) or the modality to express antigenic epitopes (i.e., the binding of envelope protein on liposomic structures). The complex structure of these vaccines provides them with some adjuvanted properties, not uniformly present for all virus-like particle types. The further inclusion of specific adjuvants in vaccine preparations can modify the presentation modality of such particles to the immune system with a specific Th1 versus Th2 polarization efficacy. A paradigm of the relevance of these new adjuvants are the immunological results obtained with the inclusion of monophosphoryl lipid A adjuvant in the formulation of L1-based human papillomavirus-naked virus-like particles to reduce a Th1 cellular immunity impairment, peculiar for alum-derived adjuvants, along with the induction of highly enhanced humoral and memory B-cellular immunity.
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Affiliation(s)
- Franco Maria Buonaguro
- Molecular Biology and Viral Oncology, Department of Experimental Oncology, Istituto Nazionale Tumori Fond Pascale, Via Mariano Semmola 142, 80131 Napoli, Italy.
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39
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Sun C, Ding FX, Wang F, He XW, He Y, Li ZS, Sun SH. Screen of multifunctional monoclonal antibodies against hepatitis B core virus-like particles. Microbiol Immunol 2009; 53:340-8. [DOI: 10.1111/j.1348-0421.2009.00135.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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40
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Cui W, Joshi NS, Jiang A, Kaech SM. Effects of Signal 3 during CD8 T cell priming: Bystander production of IL-12 enhances effector T cell expansion but promotes terminal differentiation. Vaccine 2009; 27:2177-87. [PMID: 19201385 DOI: 10.1016/j.vaccine.2009.01.088] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2008] [Revised: 12/26/2008] [Accepted: 01/16/2009] [Indexed: 01/05/2023]
Abstract
Adjuvants are commonly used in vaccines to augment immune response, but how the inflammatory cytokines elicited by adjuvants directly influence effector and memory CD8 T cell differentiation remains poorly characterized. Here, we used a peptide-pulsed dendritic cell (DC) vaccination model to examine the role of primary cytokines, IL-12 and IFNgamma, elicited by CpG-B adjuvant on CD8 T cell priming and memory CD8 T cell development. During DC vaccination, simultaneous exposure to antigen and a heterologous Listeria infection, CpG-B or IL-12 enhanced a portion of the effector CD8 T cells to expand and differentiate to a larger extent. Simultaneously, this also decreased their ability to become long-lived memory CD8 T cells. However, development of memory CD8 T cells and their precursors was largely unaffected by the additional inflammatory cytokines. Moreover, IL-12 production by the antigen-presenting cell (APC) was not required during DC+CpG vaccination or Listeria infection, but rather 'bystander' macrophages and DCs appeared to be the physiologically relevant cellular sources of this cytokine. Furthermore, IFNgamma induced by CpG was required in vivo for optimal production of IL-12, which in turn, influenced effector CD8 T cell longevity. Together, these findings demonstrate the importance of an interconnected multicellular network between APCs, naïve T cells and bystander cells of the innate immune system that regulate effector and memory CD8 T cell development during vaccination.
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Affiliation(s)
- Weiguo Cui
- Department of Immunobiology, Yale University School of Medicine, New Haven CT 06520, USA
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41
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Angelov GS, Guillaume P, Luescher IF. CD8β knockout mice mount normal anti-viral CD8+ T cell responses—but why? Int Immunol 2008; 21:123-35. [DOI: 10.1093/intimm/dxn130] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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42
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Abstract
Virus-like particles are supra-molecular assemblages, usually icosahedral or rod-like structures. They incorporate key immunologic features of viruses which include repetitive surfaces, particulate structures and induction of innate immunity through activation of pathogen-associated molecular-pattern recognition receptors. They carry no replicative genetic information and can be produced recombinantly in large scale. Virus-like particles thus represent a safe and effective vaccine platform for inducing potent B- and T-cell responses. In addition to being effective vaccines against the corresponding virus from which they are derived, virus-like particles can also be used to present foreign epitopes to the immune system. This can be achieved by genetic fusion or chemical conjugation. This technological innovation has greatly broadened the scope of their use, from immunizing against microbial pathogens to immunotherapy for chronic diseases. Towards this end, virus-like particles have been used to induce autoantibodies to disease-associated self-molecules involved in chronic diseases, such as hypertension and Alzheimer's disease. The recognition of the potent immunogenicity and commercial potential for virus-like particles has greatly accelerated research and development activities. During the last decade, two prophylactic virus-like particle vaccines have been registered for human use, while another 12 vaccines entered clinical development.
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Affiliation(s)
- Gary T Jennings
- Cytos Biotechnology AG, CH-8952 Zurich-Schlieren, Switzerland
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43
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Yang F, Wang F, Guo Y, Zhou Q, Wang Y, Yin Y, Sun S. Enhanced capacity of antigen presentation of HBc-VLP-pulsed RAW264.7 cells revealed by proteomics analysis. J Proteome Res 2008; 7:4898-903. [PMID: 18842007 DOI: 10.1021/pr800547v] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Many recent studies have indicated that virus-like particles (VLPs) have many potential applications in the fields of vaccine development and gene therapy. However, we still know little about the subtle mechanisms involved in the presentation of VLPs by antigen presenting cells (APCs). To illustrate the mechanisms, we utilized two-dimensional electrophoresis and tandem MS to compare and identify differentially expressed proteins between hepatitis B virus core antigen VLP (HBc-VLP)-pulsed and control RAW264.7 cells. Of the 25 spots identified as differentially expressed ( p < 0.05) between the two cell lines, 11 (corresponding to 11 unique proteins) were positively identified. Further analysis of two proteins, prohibitin and heat shock protein 70, confirmed that these proteins are expressed at higher levels in HBc-VLP-pulsed RAW264.7 cells compared with control cells. The proteins identified in this study will be useful in revealing the mechanisms that underlie VLP-APC interactions. Overall, this study also provides some useful suggestions for vaccine development and gene therapy.
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Affiliation(s)
- Fu Yang
- Department of Medical Genetics, Second Military Medical University, 800 Xiang Yin Road, Shanghai 200433, PR China
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44
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Bessa J, Schmitz N, Hinton HJ, Schwarz K, Jegerlehner A, Bachmann MF. Efficient induction of mucosal and systemic immune responses by virus-like particles administered intranasally: implications for vaccine design. Eur J Immunol 2008; 38:114-26. [PMID: 18081037 DOI: 10.1002/eji.200636959] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Intranasal (i.n.) immunization aims to induce local as well as systemic immune responses. In the present study, we assessed a vaccine platform based on virus-like particles (VLP) derived from the RNA phage Qbeta for i.n. immunization. We found that both i.n. and subcutaneous (s.c.) administration of Qbeta-VLP elicited strong and comparable specific IgG responses in serum and lung. Surprisingly, both routes also induced high levels of specific IgA in serum. In contrast, only i.n. administration of Qbeta-VLP resulted in local IgA production in the lung. Efficient induction of B cell responses by i.n. administration of VLP was further supported by the presence of large numbers of germinal centers (GC) as well as memory B cells in the spleen and plasma cells in the bone marrow. Results obtained for the VLP itself could be extended to an antigen covalently attached to it. Specifically, i.n. immunization of mice with VLP displaying the influenza virus derived ectodomain of the M2 protein resulted in strong M2-specific antibody responses as well as anti-viral protection. In contrast, i.n. immunization with VLP displaying p33 peptide, the major CTL epitope of lymphocytic choriomeningitis virus, induced relatively inefficient cytotoxic T cell responses, resulting in low numbers of specific T cells and poor effector cell differentiation. Taken together, these results suggest that effective antibody-based vaccines are achievable by i.n. administration of Qbeta-VLP displaying specific antigens.
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Affiliation(s)
- Juliana Bessa
- Cytos Biotechnology AG, Zürich-Schlieren, Switzerland
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45
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Schlosser E, Mueller M, Fischer S, Basta S, Busch DH, Gander B, Groettrup M. TLR ligands and antigen need to be coencapsulated into the same biodegradable microsphere for the generation of potent cytotoxic T lymphocyte responses. Vaccine 2008; 26:1626-37. [PMID: 18295941 DOI: 10.1016/j.vaccine.2008.01.030] [Citation(s) in RCA: 195] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2007] [Revised: 12/17/2007] [Accepted: 01/17/2008] [Indexed: 01/04/2023]
Abstract
Dendritic cells phagocytose pathogens leading to maturation and cross-presentation on MHC class I. We found that the efficiency of cross-priming in mice after vaccination with biodegradable poly(D,L-lactide-co-glycolide) microspheres (MSs) was enhanced when ovalbumin was coencapsulated together with either a CpG oligonucleotide or polyI:C as compared to co-inoculation of ovalbumin-bearing MS with soluble or separately encapsulated adjuvants. A single immunization with MS containing coencaspsulated CpG and ovalbumin yielded 9% SIINFEKL/H-2K(b) tetramer positive CTLs, production of IFN-gamma, efficient cytolysis, and protection from vaccinia virus infection. Taken together, coencapsulation of adjuvant and antigen is an important paradigm for the generation of potent CTL responses.
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Affiliation(s)
- Eva Schlosser
- Division of Immunology, Department of Biology, Konstanz, Germany
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46
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Novel plant virus-based vaccine induces protective cytotoxic T-lymphocyte-mediated antiviral immunity through dendritic cell maturation. J Virol 2007; 82:785-94. [PMID: 17989184 DOI: 10.1128/jvi.01811-07] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Currently used vaccines protect mainly through the production of neutralizing antibodies. However, antibodies confer little or no protection for a majority of chronic viral infections that require active involvement of cytotoxic T lymphocytes (CTLs). Virus-like particles (VLPs) have been shown to be efficient inducers of cell-mediated immune responses, but administration of an adjuvant is generally required. We recently reported the generation of a novel VLP system exploiting the self-assembly property of the papaya mosaic virus (PapMV) coat protein. We show here that uptake of PapMV-like particles by murine splenic dendritic cells (DCs) in vivo leads to their maturation, suggesting that they possess intrinsic adjuvant-like properties. DCs pulsed with PapMV-like particles displaying the lymphocytic choriomeningitis virus (LCMV) p33 immunodominant CTL epitope (PapMV-p33) efficiently process and cross-present the viral epitope to p33-specific transgenic T cells. Importantly, the CTL epitope is also properly processed and presented in vivo, since immunization of p33-specific T-cell receptor transgenic mice with PapMV-p33 induces the activation of large numbers of specific CTLs. C57BL/6 mice immunized with PapMV-p33 VLPs in the absence of adjuvant develop p33-specific effector CTLs that rapidly expand following LCMV challenge and protect vaccinated mice against LCMV infection in a dose-dependent manner. These results demonstrate the efficiency of this novel plant virus-based vaccination platform in inducing DC maturation leading to protective CTL responses.
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Abstract
Virus-like particles (VLPs) consist of viral structural proteins that, when overexpressed, spontaneously self-assemble into particles that are antigenically indistinguishable from infectious virus or subviral particles. VLPs can be considered as dense, repetitive arrays of one or more protein subunits with properties that are highly advantageous for use as stand-alone vaccines or as vaccine platforms. This review discusses the development of VLP-based platform technologies for vaccines against pathogens, as well as nontraditional targets such as self-antigens involved in chronic diseases.
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Affiliation(s)
- Bryce Chackerian
- University of New Mexico, Department of Molecular Genetics and Microbiology, Center for Infectious Disease and Immunity, Cancer Research and Treatment Center, Cancer Biology Program, School of Medicine, Albuquerque, NM 87131, USA.
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48
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Zhang Y, Song S, Liu C, Wang Y, Xian X, He Y, Wang J, Liu F, Sun S. Generation of chimeric HBc proteins with epitopes in E.coli: formation of virus-like particles and a potent inducer of antigen-specific cytotoxic immune response and anti-tumor effect in vivo. Cell Immunol 2007; 247:18-27. [PMID: 17707782 DOI: 10.1016/j.cellimm.2007.07.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2007] [Revised: 06/29/2007] [Accepted: 07/03/2007] [Indexed: 12/18/2022]
Abstract
The major aim of the project was to develop the virus-like particles (VLPs) displaying single or multi-epitope of hepatocellular carcinomas (HCC) in Escherichia coli and to evaluate the effect on inducing Ag-specific CD8(+) T cell response and antitumor efficacy as candidate vaccines. To this end, hepatitis B virus core (HBc) particles were used as a carrier of HCC epitopes. Four HCC epitopes MAGE-1(278-286aa), MAGE-3(271-279aa), AFP1 (158-166aa) or AFP2 (542-550aa) were fused to the 3' terminus of the truncated HBV core gene, respectively, or conjunctively. Not all recombinant plasmids led to expression of chimeric proteins in expression strain E. coli BL21 (DE3), but chimeric proteins which are expressed in inclusion bodies resulted in the formation of complete "mature" VLPs. E. coli-derived truncated HBc(1-144) chimeric protein self-assembled into VLPs that both morphologically and physically are similar to the wild-type ones and they still remained activity after purification and refolding from 6M urea solution. We also showed that they could be internalized and presented by DCs in vitro. Additionally, DCs pulsed with the chimeric HBc-VLPs could induce stronger CTL activity and greater IFN-gamma secretion by responding T cells compared with peptid-pulsed DCs. In the B16-pIR-HH tumor therapy model, the growth of established tumors was significantly inhibited by immunization using VLP-pulsed DCs, resulting in significantly higher survival rate of immunized animals. Thus, the results of the current study have demonstrated the principal possibility of using VLP on the basis of HBcAg for creation of a new type of HCC-specific immunogen.
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MESH Headings
- Animals
- Antibody Specificity/immunology
- Antigens, Neoplasm/chemistry
- Antigens, Neoplasm/genetics
- Antigens, Neoplasm/immunology
- Carcinoma, Hepatocellular/immunology
- Carcinoma, Hepatocellular/therapy
- Dendritic Cells/immunology
- Dendritic Cells/virology
- Epitopes/chemistry
- Epitopes/genetics
- Epitopes/immunology
- Escherichia coli/genetics
- Hepatitis B Antibodies/biosynthesis
- Hepatitis B Core Antigens/chemistry
- Hepatitis B Core Antigens/genetics
- Hepatitis B Core Antigens/immunology
- Hepatitis B Vaccines/biosynthesis
- Hepatitis B Vaccines/immunology
- Hepatitis B virus/chemistry
- Hepatitis B virus/immunology
- Humans
- Immunotherapy
- Interferon-gamma/metabolism
- Liver Neoplasms/immunology
- Liver Neoplasms/therapy
- Male
- Melanoma-Specific Antigens
- Mice
- Mice, Inbred C57BL
- Mice, Transgenic
- Neoplasm Proteins/chemistry
- Neoplasm Proteins/genetics
- Neoplasm Proteins/immunology
- Recombinant Fusion Proteins/chemistry
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/immunology
- T-Lymphocytes, Cytotoxic/immunology
- Treatment Outcome
- Tumor Cells, Cultured
- Vaccines, Synthetic/chemistry
- Vaccines, Synthetic/immunology
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Affiliation(s)
- Yan Zhang
- Department of Molecular Biology, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017, PR China
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49
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Song S, Wang Y, Zhang Y, Wang F, He Y, Ren D, Guo Y, Sun S. Augmented induction of CD8+ cytotoxic T-cell response and antitumor effect by DCs pulsed with virus-like particles packaging with CpG. Cancer Lett 2007; 256:90-100. [PMID: 17656012 DOI: 10.1016/j.canlet.2007.06.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2007] [Revised: 06/02/2007] [Accepted: 06/05/2007] [Indexed: 11/28/2022]
Abstract
The present study aims at establishing a novel vaccine procedure based on HBc-VLP-pulsed DCs. Immature mice BMDCs could capture HBc-VLP or HBc-VLP packaging CpG efficiently and present the antigen to syngeneic mice spleen T cells in vitro. Immunization with DCs showed that compared to VLP-pulsed DCs, VLP packaging CpG-pulsed DCs elicit stronger T-cell responses in vivo, as measured by both intracellular production of IFN-gamma and in vivo killing assays by Ag-specific T cells. In the B16-pIR-HH tumor therapy model, the growth of established tumors was significantly inhibited by single immunization of DCs pulsed with HBc-VLP packaged with CpG, resulting in significantly longer survival of immunized animals and strikingly, high frequencies (>10% of CD8(+) cells) of protective CTL could be induced and maintained. The mice immunized with DCs treated with HBc-VLP, however, trigger an antitumor effect at the early phase of vaccination, after 20 days of tumor injection, the tumor growth inhibition of VLP-pulsed DCs vaccination was decreased gradually and the fact could be interpreted by the decreasing number of antigen-specific CD8(+) T-cell and IFN-gamma(+)-producing CD8(+) T cell. This study therefore shows that the use of HBc-VLP packaging CpG-pulsed DCs could facilitate the development of effective T-cell-based vaccines.
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Affiliation(s)
- Shuxia Song
- Department of Medical Genetics, Second Military Medical University, 800 Xiang Yin Road, Shanghai 200433, PR China.
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50
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Adamina M, Weber WP, Rosenthal R, Schumacher R, Zajac P, Guller U, Frey DM, Oertli D, Zuber M, Heberer M, Spagnoli GC. Heterologous prime-boost immunotherapy of melanoma patients with Influenza virosomes, and recombinant Vaccinia virus encoding 5 melanoma epitopes and 3 co-stimulatory molecules. A multi-centre phase I/II open labeled clinical trial. Contemp Clin Trials 2007; 29:165-81. [PMID: 17707139 DOI: 10.1016/j.cct.2007.07.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2007] [Revised: 06/27/2007] [Accepted: 07/09/2007] [Indexed: 12/31/2022]
Abstract
To the exception of early stages of disease, the morbidity and mortality of melanoma is considerable, with no acknowledged therapeutic options beyond surgery. Immunotherapy of melanoma has achieved some success, but further refinements are urgently needed in order to realize its potential. This paper describes a multi-centre phase I/II open labeled, controlled clinical trial investigating 2 innovative immunotherapeutic reagents. Two successive groups of 20 resected AJCC stages IIb-IV melanoma patients will be treated, first with melanoma epitopes included into Influenza virosomes (group 1), and second with a heterologous prime-boost protocol priming with a recombinant Vaccinia virus, and boosting with Influenza virosomes (group 2). Five melanoma epitopes from three different melanoma differentiation antigens were included into Influenza virosomes, that cross-stimulate CD4+ T cells and are endowed with high adjuvant capacity in the generation of CTL. The same five melanoma epitopes, two co-stimulatory molecules CD80 and CD86, and the CD40 ligand, a marker known to play a crucial role in CTL generation and memory maintenance were encoded in a recombinant Vaccinia virus. GM-CSF will be administered as a supporting cytokine. Both Influenza virosomes and octo-recombinant Vaccinia virus are innovative and original constructs assessed for the first time in human. Immunotherapy foresees 12 weekly immunizations for each group. Toxicity and adverse events will be monitored clinically. Immunological efficacy will be assessed dynamically by ex-vivo multimer analysis, Elispot, and quantitative real-time PCR for up to 3 months following completion of immunotherapy schedule. Disease free survival will be assessed by 4-monthly serial clinic visits, including physical and FDG-PET examinations, for a follow-up time of 2 years. Quality of life will be assessed with a dedicated FACT-BRM 4 questionnaire.
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Affiliation(s)
- Michel Adamina
- Institute for Surgical Research and Hospital Management, Department of Surgery, University of Basel, Hebelstrasse 20, 4031 Basel, Switzerland.
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