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Cai M, Wang C, Li Y, Gu H, Sun S, Duan Y, Lai C, Wang K, Yang X, Xing L, Zhang P, Wang Z, Zhang S, Guo X, Liu S, Tong Y, Wang X, Yang P. Virus-like particle vaccine by intranasal vaccination elicits protective immunity against respiratory syncytial viral infection in mice. Acta Biochim Biophys Sin (Shanghai) 2017; 49:74-82. [PMID: 27974288 DOI: 10.1093/abbs/gmw118] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 10/30/2016] [Indexed: 11/12/2022] Open
Abstract
Respiratory syncytial virus (RSV) is a leading cause of lower respiratory infection in infants and children, but there is still no licensed vaccine available. In this report, we developed virus-like particle (VLP) vaccines based on the Bac-to-Bac baculovirus expression system, consisting of an influenza virus matrix (M1) protein and the RSV fusion protein (F) or glycoprotein (G). These RSV VLPs were identified by western blot analysis and electron microscopy. Female BALB/c mice immunized intranasally (i.n.) with RSV-F VLPs, RSV-G VLPs, or both showed viral-specific antibody responses against RSV. Total IgG, IgG1, IgG2a, and mucosal IgA were detected in mice with RSV-F plus RSV-G VLPs, revealing potent cellular and mucosal immune responses. Moreover, we found that these mixed RSV VLPs conferred enhanced protection against live RSV challenges, showing significant decreases in lung viral replication and obvious attenuation of histopathological changes associated with viral infections. These results demonstrate that RSV-F plus RSV-G VLPs by intranasal vaccination is a promising vaccine candidate that warrants further evaluation using cotton rat and primate models.
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Affiliation(s)
- Mengying Cai
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing 100071, China
| | - Cheng Wang
- Beijing 307 Hospital, Affiliated to Academy of Medical Sciences, Beijing 100071, China
| | - Yufeng Li
- Chinese PLA General Hospital, Beijing 100853, China
| | - Hongjing Gu
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing 100071, China
| | - Sujing Sun
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing 100071, China
| | - Yueqiang Duan
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing 100071, China
| | - Chengcai Lai
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing 100071, China
| | - Keyu Wang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing 100071, China
| | - Xiaolan Yang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing 100071, China
| | - Li Xing
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing 100071, China
| | | | | | | | | | - Shubing Liu
- Beijing 307 Hospital, Affiliated to Academy of Medical Sciences, Beijing 100071, China
| | - Yigang Tong
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing 100071, China
| | - Xiliang Wang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing 100071, China
| | - Penghui Yang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing 100071, China
- Beijing 302 Hospital, Beijing 100039, China
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Almeida FMF, Blanco A, Trujillo H, Hernández D, García D, Alba JS, Abad ML, Merino N, Lobaina Y, Aguilar Rubido JC. Dynamic of Immune Response induced in Hepatitis B Surface Antigen-transgenic Mice Immunized with a Novel Therapeutic Formulation. Euroasian J Hepatogastroenterol 2016; 6:25-30. [PMID: 29201720 PMCID: PMC5578554 DOI: 10.5005/jp-journals-10018-1161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 12/29/2015] [Indexed: 01/12/2023] Open
Abstract
The development of therapeutic vaccines against chronic hepatitis B requires the capacity of the formulation to subvert a tolerated immune response as well as the evaluation of histopathological damage resulting from the treatment. In the present study, the dynamicity of induced immune response to hepatitis B surface antigen (HBsAg) was evaluated in transgenic mice that constitutively express the HBsAg gene (HBsAg-tg mice). After immunization with a vaccine candidate containing both surface (HBsAg) and core (HBcAg) antigens of hepatitis B virus (HBV), the effect of vaccination on clearance of circulating HBsAg and the potential histological alterations were examined. Transgenic (tg) and non-transgenic (Ntg) mice were immunized by intranasal (IN) and subcutaneous (SC) routes simultaneously. A control group received phosphate-buffered saline (PBS) by IN route and aluminum by SC route. Positive responses, at both humoral and cellular levels, were obtained after five immunizations in HBsAg-tg mice. Such responses were delayed and of lower intensity in tg mice, compared to vaccinated Ntg mice. Serum IgG response was characterized by a similar IgG subclass pattern. Even when HBsAg-specific CD8+ T cell responses were clearly detectable by gamma-interferon ELISPOT assay, histopathological alterations were not detected in any organ, including the liver and kidneys. Our study demonstrated, that it is possible to subvert the immune tolerance against HBsAg in tg mice, opening a window for new studies to optimize the schedule, dose, and formulation to improve the immune response to the therapeutic vaccine candidate. These results can be considered a safety proof to support clinical developments for the formulation under study. How to cite this article Freyre FM, Blanco A, Trujillo H, Hernández D, García D, Alba JS, Lopez M, Merino N, Lobaina Y, Aguilar JC. Dynamic of Immune Response induced in Hepatitis B Surface Antigen-transgenic Mice Immunized with a Novel Therapeutic Formulation. Euroasian J Hepato-Gastroenterol 2016;6(1):25-30.
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Affiliation(s)
| | - Aracelys Blanco
- Animal Facilities, Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - Heidy Trujillo
- Vaccine Division, Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - Dunia Hernández
- Vaccine Division, Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - Daymir García
- Vaccine Division, Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - José S Alba
- Animal Facilities, Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - Matilde López Abad
- Technology Development Division, Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - Nelson Merino
- Food and Pharmacy Faculty, University of Havana, Havana, Cuba
| | - Yadira Lobaina
- Vaccine Division, Center for Genetic Engineering and Biotechnology, Havana, Cuba
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Stein LL, Loomba R. Drug targets in hepatitis B virus infection. Infect Disord Drug Targets 2009; 9:105-16. [PMID: 19275699 DOI: 10.2174/187152609787847677] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Hepatitis B virus infection (HBV) is a significant global health problem. Despite the success of universal hepatitis B vaccination in many countries, more than 350 million individuals worldwide are chronically infected and 15- 40% of those will develop cirrhosis and/or hepatocellular carcinoma if left untreated. Available therapies for chronic hepatitis B (CHB) infection are effective at decreasing viremia and improving measured clinical outcomes, however, no single therapy is optimal. As such, alternative drug therapies and the investigation of their role in the management of CHB are warranted. Significant improvements in the understanding of the HBV life cycle, viral genomics, and virus-host interactions continue to lead to the development of novel viral targets and immune modulators. Currently, two major classes of agents are utilized in CHB: the interferons and the nucleos(t)ide analogues. Each agent has individual advantages and drawbacks. The development of specific antiviral therapy has led to the emergence of HBV drug-resistant strains that has limited the long-term therapeutic potential of available agents. This necessitates the development of new agents that target both wild-type and drug-resistant strains. Further understanding of the basic mechanisms and clinical nuances of drug therapy is warranted. As most novel therapies are in the earliest stages of clinical development and testing, in the near future, treatment will continue to be long-term and likely involve the use of combination therapies to prevent viral resistance. In this review, we will highlight the HBV life cycle and genome, focusing in on current and potential novel antiviral drug targets as well as the benefits and clinical challenges with these therapies.
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Affiliation(s)
- Lance L Stein
- Division of Gastroenterology, Department of Medicine, University of California - San Diego, CA, USA
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Abstract
Despite effective prophylactic vaccines against hepatitis B virus existing for over 20 years, more than 2.5 billion people worldwide have been exposed to the disease and approximately 370 million people are chronically infected with it. Chronic infection in more than two thirds of infected patients results in chronic liver disease, which may lead to cirrhosis, exposure to noncarcinomatous complications and hepatocellular carcinoma. Currently available therapies fail to allow complete control of viral replication in most patients. Viral persistence has been associated with a defect in the development of hepatitis B virus-specific cellular immunity. Immunomodulatory strategies to boost or to broaden the weak virus-specific T-cell response have been proposed to bypass the chronic hepatitis B infection, including hepatitis B virus envelope- and nucleocapsid-based vaccines, and new formulations for recombinant and DNA-based vaccines, which are currently being evaluated in clinical trials.
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Affiliation(s)
- Stanislas Pol
- Unité d'Hépatologie, Liver Unit, Hôpital Cochin, Université Paris V-René Descartes and Inserm U-567, 27 Rue du Faubourg Saitn Antoine, 75014 Paris, France.
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Vangala A, Bramwell VW, McNeil S, Christensen D, Agger EM, Perrie Y. Comparison of vesicle based antigen delivery systems for delivery of hepatitis B surface antigen. J Control Release 2007; 119:102-10. [PMID: 17331610 DOI: 10.1016/j.jconrel.2007.01.010] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2006] [Revised: 01/17/2007] [Accepted: 01/23/2007] [Indexed: 11/17/2022]
Abstract
There is a clinical need for a more effective vaccine against hepatitis B, and in particular vaccines that may be suitable for therapeutic administration. This study assesses the potential of cationic surfactant vesicle based formulations using two agents; the cationic amine containing [N-(N',N'-dimethylaminoethane)-carbamoyl] cholesterol (DC-Chol) or dimethyl dioctadecylammonium bromide (DDA) with hepatitis B surface antigen (HBsAg). Synthetic mycobacterial cord factor, trehalose 6,6'-dibehenate (TDB) has been used as an adjuvant and the addition of 1-monopalmitoyl glycerol (C16:0) (MP) and cholesterol (Chol) to DDA-TDB is assessed for its potential to facilitate formation of dehydration-rehydration vesicles (DRV) at room temperature, and the effect of this on immune responses. A DRV formulation is directly compared to an adsorbed formulation of the same composition and preparation protocol (MP:dioleoyl phosphoethanolamine (DOPE):Chol:DC-Chol) and the direct substitution of MP with phosphatidylcholine (PC) is also compared in DRV antigen-entrapped formulations. MP and Chol were shown to facilitate the use of DDA-TDB in DRV formulations prepared at room temperature, whilst there was marginal alteration of immunogenicity (a reduction in HBsAg-specific IL-2). The HBsAg adsorbed DRV formulation was not significantly different from the HBsAg entrapped DRV formulation. Overall, DDA formulations incorporating TDB showed markedly increased antigen specific splenocyte proliferation and elicited cytokine production concomitant with a strong T cell driven response, delineating formulations that may be useful for further evaluation of their clinical potential.
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Affiliation(s)
- Anil Vangala
- Medicines Research Unit, School of Life and Health Sciences, Aston University, Birmingham, UK
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Asselah T, Castelnau C, Boyer N, Ripault MP, Marcellin P. Traitement de l’hépatite chronique B. ACTA ACUST UNITED AC 2004; 28:1215-27. [PMID: 15671931 DOI: 10.1016/s0399-8320(04)95213-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Tarik Asselah
- Service d'Hépatologie, INSERM U481, Hôpital Beaujon, 92110 Clichy
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Hadziyannis SJ, Papatheodoridis GV. Treatment of HBeAg negative chronic hepatitis B with new drugs (adefovir and others). J Hepatol 2004; 39 Suppl 1:S172-6. [PMID: 14708699 DOI: 10.1016/s0168-8278(03)00334-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Stephanos J Hadziyannis
- Department of Medinine and Hepatology, Henry Dunant Hospital, 107 Messogion Avenue, Athens, Greece.
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