1
|
Yang DK, Ahn S, Lee HJ, Kim M, Kim JT, Lee JY, Cho YS. Immunogenicity of a novel inactivated canine adenovirus type 2 variant vaccine for dogs. Clin Exp Vaccine Res 2024; 13:253-258. [PMID: 39144129 PMCID: PMC11319112 DOI: 10.7774/cevr.2024.13.3.253] [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: 05/31/2024] [Accepted: 06/21/2024] [Indexed: 08/16/2024] Open
Abstract
Purpose The immunogenicity of vaccines containing the canine adenovirus (CAdV) type 2 (CAdV-2) variant has not yet been reported. We prepared a novel inactivated CAdV-2 variant vaccine using the CAV2232-41 strain, and evaluated its safety and immunogenicity in raccoon dogs. Materials and Methods The growth kinetics of CAV2232-41 were determined using Madin-Darby Canine Kidney (MDCK) cells. The nucleotide sequences of CAV2232 and CAV2232-41 were determined by next-generation sequencing. To generate the CAdV-2 variant vaccine, CAV2232-41 propagated in the MDCK cells was inactivated with 0.1% formaldehyde. Two vaccines were prepared by blending inactivated CAV2232-41 with Cabopol and Rehydragel adjuvants. Safety and immunogenicity of the CAV2232C and CAV2232R vaccines were evaluated in guinea pigs. Safety and immunogenicity of the CAV2232C vaccine were also evaluated in raccoon dogs. The virus neutralizing antibody (VNA) titer against CAV2232-41 was measured in sera collected from immunized guinea pigs and raccoon dogs. Results CAV2232-41 showed the highest viral titer on days 4-6 post-inoculation and had a deletion in the E3 gene, which was confirmed as a CAdV-2 variant. Guinea pigs inoculated with CAV2232C showed slightly higher VNA titers than those inoculated with CAV2232R 2 weeks after booster vaccination. Raccoon dogs immunized with the CAV2232C vaccine developed high mean VNA titers, while non-vaccinated raccoon dogs were antibody-negative. Conclusion The CAV2232C vaccine is safe and induces a protective VNA titer in raccoon dogs.
Collapse
Affiliation(s)
- Dong-Kun Yang
- Animal and Plant Quarantine Agency, Ministry of Agriculture, Food and Rural Affairs, Gimcheon, Korea
| | - Sangjin Ahn
- Section of Wildlife Internal Medicine, College of Veterinary Medicine, Kangwon National University, Chuncheon, Korea
| | - Hye Jeong Lee
- Animal and Plant Quarantine Agency, Ministry of Agriculture, Food and Rural Affairs, Gimcheon, Korea
| | - Minuk Kim
- Animal and Plant Quarantine Agency, Ministry of Agriculture, Food and Rural Affairs, Gimcheon, Korea
| | - Jong-Taek Kim
- Section of Wildlife Internal Medicine, College of Veterinary Medicine, Kangwon National University, Chuncheon, Korea
| | - Ju-Yeon Lee
- Animal and Plant Quarantine Agency, Ministry of Agriculture, Food and Rural Affairs, Gimcheon, Korea
| | - Yun Sang Cho
- Animal and Plant Quarantine Agency, Ministry of Agriculture, Food and Rural Affairs, Gimcheon, Korea
| |
Collapse
|
2
|
Wang CW, Chen YL, Mao SJT, Lin TC, Wu CW, Thongchan D, Wang CY, Wu HY. Pathogenicity of Avian Polyomaviruses and Prospect of Vaccine Development. Viruses 2022; 14:v14092079. [PMID: 36146885 PMCID: PMC9505546 DOI: 10.3390/v14092079] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 11/23/2022] Open
Abstract
Polyomaviruses are nonenveloped icosahedral viruses with a double-stranded circular DNA containing approximately 5000 bp and 5–6 open reading frames. In contrast to mammalian polyomaviruses (MPVs), avian polyomaviruses (APVs) exhibit high lethality and multipathogenicity, causing severe infections in birds without oncogenicity. APVs are classified into 10 major species: Adélie penguin polyomavirus, budgerigar fledgling disease virus, butcherbird polyomavirus, canary polyomavirus, cormorant polyomavirus, crow polyomavirus, Erythrura gouldiae polyomavirus, finch polyomavirus, goose hemorrhagic polyomavirus, and Hungarian finch polyomavirus under the genus Gammapolyomavirus. This paper briefly reviews the genomic structure and pathogenicity of the 10 species of APV and some of their differences in terms of virulence from MPVs. Each gene’s genomic size, number of amino acid residues encoding each gene, and key biologic functions are discussed. The rationale for APV classification from the Polyomavirdae family and phylogenetic analyses among the 10 APVs are also discussed. The clinical symptoms in birds caused by APV infection are summarized. Finally, the strategies for developing an effective vaccine containing essential epitopes for preventing virus infection in birds are discussed. We hope that more effective and safe vaccines with diverse protection will be developed in the future to solve or alleviate the problems of viral infection.
Collapse
Affiliation(s)
- Chen-Wei Wang
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
- International Degree Program in Animal Vaccine Technology, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Yung-Liang Chen
- Department of Medical Laboratory Science and Biotechnology, Yuan Pei University of Medical Technology, Yuanpei Street, Hsinchu 300, Taiwan
| | - Simon J. T. Mao
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Tzu-Chieh Lin
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
- International Degree Program in Animal Vaccine Technology, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Ching-Wen Wu
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
- Department of Tropical Agriculture and International Cooperation, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Duangsuda Thongchan
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
- Faculty of Agriculture and Technology, Rajamangala University of Technology Isan, Surin Campus, Nakhon Ratchasima 30000, Thailand
| | - Chi-Young Wang
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung 402, Taiwan
- The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung 402, Taiwan
- Correspondence: (C.-Y.W.); (H.-Y.W.); Tel.: +886-4-22840369 (ext. 48) (C.-Y.W.); +886-8-7703202 (ext. 5072) (H.-Y.W.)
| | - Hung-Yi Wu
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
- Correspondence: (C.-Y.W.); (H.-Y.W.); Tel.: +886-4-22840369 (ext. 48) (C.-Y.W.); +886-8-7703202 (ext. 5072) (H.-Y.W.)
| |
Collapse
|
3
|
Lee W, Suresh M. Vaccine adjuvants to engage the cross-presentation pathway. Front Immunol 2022; 13:940047. [PMID: 35979365 PMCID: PMC9376467 DOI: 10.3389/fimmu.2022.940047] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 07/08/2022] [Indexed: 11/13/2022] Open
Abstract
Adjuvants are indispensable components of vaccines for stimulating optimal immune responses to non-replicating, inactivated and subunit antigens. Eliciting balanced humoral and T cell-mediated immunity is paramount to defend against diseases caused by complex intracellular pathogens, such as tuberculosis, malaria, and AIDS. However, currently used vaccines elicit strong antibody responses, but poorly stimulate CD8 cytotoxic T lymphocyte (CTL) responses. To elicit potent CTL memory, vaccines need to engage the cross-presentation pathway, and this requirement has been a crucial bottleneck in the development of subunit vaccines that engender effective T cell immunity. In this review, we focus on recent insights into DC cross-presentation and the extent to which clinically relevant vaccine adjuvants, such as aluminum-based nanoparticles, water-in oil emulsion (MF59) adjuvants, saponin-based adjuvants, and Toll-like receptor (TLR) ligands modulate DC cross-presentation efficiency. Further, we discuss the feasibility of using carbomer-based adjuvants as next generation of adjuvant platforms to elicit balanced antibody- and T-cell based immunity. Understanding of the molecular mechanism of DC cross-presentation and the mode of action of adjuvants will pave the way for rational design of vaccines for infectious diseases and cancer that require balanced antibody- and T cell-based immunity.
Collapse
|
4
|
Malburet C, Leclercq L, Cotte JF, Thiebaud J, Cottet H. Study of Interactions between Antigens and Polymeric Adjuvants in Vaccines by Frontal Analysis Continuous Capillary Electrophoresis. Biomacromolecules 2020; 21:3364-3373. [PMID: 32609507 DOI: 10.1021/acs.biomac.0c00782] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Vaccine adjuvants are used to enhance the immune response induced by antigens that have insufficient immunostimulatory capabilities. The present work aims at developing a frontal analysis continuous capillary electrophoresis (FACCE) methodology for the study of antigen-adjuvant interactions in vaccine products. After method optimization using three cationic model proteins, namely lysozyme, cytochrome c, and ribonuclease A, FACCE was successfully implemented to quantify the free antigen and thus to determine the interaction parameters (stoichiometry and binding constant) between an anionic polymeric adjuvant (polyacrylic acid, SPA09) and a cationic vaccine antigen in development for the treatment for Staphylococcus aureus. The influence of the ionic strength of the medium on the interactions was investigated. A strong dependence of the binding parameters with the ionic strength was observed. The concentration of the polymeric adjuvant was also found to significantly modify the ionic strength of the formulation, the extent of which could be estimated and corrected.
Collapse
Affiliation(s)
- Camille Malburet
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France.,Analytical Sciences, Sanofi Pasteur, 1541 Avenue Marcel Mérieux, Marcy-l'Étoile 69280, France
| | - Laurent Leclercq
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France
| | - Jean-François Cotte
- Analytical Sciences, Sanofi Pasteur, 1541 Avenue Marcel Mérieux, Marcy-l'Étoile 69280, France
| | - Jérôme Thiebaud
- Analytical Sciences, Sanofi Pasteur, 1541 Avenue Marcel Mérieux, Marcy-l'Étoile 69280, France
| | - Hervé Cottet
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France
| |
Collapse
|
5
|
Garinot M, Piras-Douce F, Probeck P, Chambon V, Varghese K, Liu Y, Luna E, Drake D, Haensler J. A potent novel vaccine adjuvant based on straight polyacrylate. INTERNATIONAL JOURNAL OF PHARMACEUTICS-X 2020; 2:100054. [PMID: 32776001 PMCID: PMC7398942 DOI: 10.1016/j.ijpx.2020.100054] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/06/2020] [Accepted: 07/18/2020] [Indexed: 02/03/2023]
Abstract
A structure-activity study was conducted to identify the structural characteristics underlying the adjuvant activity of straight (i.e. non-crosslinked) polyacrylate polymers (PAAs) in order to select a new PAA adjuvant candidate for future clinical development. The study revealed that the adjuvant effect of PAA was mainly influenced by polymer size (Mw) and dose. Maximal effects were obtained with large PAAs above 350 kDa and doses above 100 μg in mice. Small PAAs below 10 kDa had virtually no adjuvant effect. HPSEC analysis revealed that PAA polydispersity index and ramification had less impact on adjuvanticity. Heat stability studies indicated that residual persulfate could be detrimental to PAA stability. Hence, this impurity was systematically eliminated by diafiltration along with small Mw PAAs and residual acrylic acid that could potentially affect product safety, potency and stability. The selected PAA, termed SPA09, displayed an adjuvant effect that was superior to that of a standard emulsion adjuvant when tested with CMV-gB in mice, even in the absence of binding to the antigen. The induced immune response was dominated by strong IFNγ, IgG2c and virus neutralizing titers. The activity of SPA09 was then confirmed on human cells via the innate immune module of the human MIMIC® system. Straight polyacrylate (350 kDa < Mw < 650 kDa; termed SPA09) is a strong adjuvant easy to formulate with vaccine antigens SPA09 induces Th-1 type immune responses in mice, dominated by strong IFN-γ, IgG2c and virus neutralizing titers SPA09 can activate human antigen presenting cells when tested via the innate immune module (PTE) of the human MIMIC® system SPA09 constitutes a straightforward new adjuvant candidate for future clinical development
Collapse
Affiliation(s)
- Marie Garinot
- Research and External Innovation, Sanofi Pasteur, Marcy L'Etoile, France
| | | | | | | | - Kucku Varghese
- Global Clinical Immunology, Sanofi Pasteur, Swiftwater, PA, USA
| | - Yuanqing Liu
- Research and External Innovation, Sanofi Pasteur, Marcy L'Etoile, France
| | | | | | - Jean Haensler
- Research and External Innovation, Sanofi Pasteur, Marcy L'Etoile, France
| |
Collapse
|
6
|
|
7
|
Garmyn A, Verlinden M, Bosseler L, Adriaensen C, Martel A. Persistent Goose Hemorrhagic Polyomavirus Infection on a Belgian Goose Farm. Avian Dis 2017; 61:536-538. [DOI: 10.1637/11604-020317-case.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- A. Garmyn
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B9820 Merelbeke, Belgium
| | - M. Verlinden
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B9820 Merelbeke, Belgium
| | - L. Bosseler
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B9820 Merelbeke, Belgium
| | | | - A. Martel
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B9820 Merelbeke, Belgium
| |
Collapse
|
8
|
A new approach for development of vaccine against visceral leishmaniasis: Lipophosphoglycan and polyacrylic acid conjugates. ASIAN PAC J TROP MED 2017; 10:877-886. [PMID: 29080616 DOI: 10.1016/j.apjtm.2017.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 07/12/2017] [Accepted: 08/18/2017] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To determine the antileishmanial vaccine effectiveness of lipophosphoglycan (LPG) and polyacrylic acids (PAA) conjugates on in vivo mice models. METHODS LPG molecule was isolated and purified from large-scale Leishmania donovani parasite culture. Protection efficacies of LPG alone, in combination with Freund's adjuvant, in a physical mixture and in conjugate (consisting of various LPG concentrations) with PAA, were comparatively determined by various techniques, such as cultivation with the micro-culture method, assessment of in vitro infection rates of peritoneal macrophages, determination of parasite load in liver with Leishman-Donovan Units, and detection of cytokine responses. RESULTS Obtained results demonstrated that the highest vaccine-mediated immune protection was provided by LPG-PAA conjugate due to all parameters investigated. According to the Leishman-Donovan Units results, the sharpest decline in parasite load was seen with a ratio of 81.17% when 35 μg LPG containing conjugate was applied. This value was 44.93% for the control group immunized only with LPG. Moreover, decreases in parasite load were 53.37%, 55.2% and 65.8% for the groups immunized with 10 μg LPG containing LPG-PAA conjugate, a physical mixture of the LPG-PAA, and a mixture of LPG + Freund's adjuvant, respectively. Furthermore, cytokine results supported that Th1 mediated protection occurred when mice were immunized with LPG-PAA conjugate. CONCLUSIONS It has been demonstrated in this study that conjugate of LPG and PAA has an antileishmanial vaccine effect against visceral leishmaniasis. In this respect, the present study may lead to new vaccine approaches based on high immunogenic LPG molecule and adjuvant polymers in fighting against Leishmania infection.
Collapse
|
9
|
Cotte JF, Bouadam A, Sordoillet A, Jaudinaud I, Chambon V, Talaga P. Determination of molecular size parameters and quantification of polyacrylic acid by high performance size-exclusion chromatography with triple detection. Anal Bioanal Chem 2017; 409:2083-2092. [PMID: 28078409 DOI: 10.1007/s00216-016-0155-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Revised: 12/07/2016] [Accepted: 12/13/2016] [Indexed: 01/19/2023]
Abstract
Synthetic polyelectrolytes are a broad class of vaccine adjuvants. Among them, polyacrylic acid (PAA), a polyanionic polymer, is currently evaluated by Sanofi Pasteur. As chain length is considered to be a critical quality attribute for adjuvant properties of PAA, measurement of precise and accurate molecular size parameters is important for these polymers. In the field of synthetic polymer chemistry, methods for determination of molecular size parameters are well defined. Specifically, high performance size-exclusion chromatography (HPSEC) with multi-detection system is a method of choice. This paper describes the development of HPSEC method to well characterize and precisely quantify PAA in different adjuvant formulations. A first set of characterizations were made, with determination of dn/dc coefficient, which enabled the determination of weight- and number-average molecular weight, viscosimetric radius, and intrinsic viscosity. In-depth characterization was also made with branching study through the use of Mark-Houwink parameter determination. The quantification method was also evaluated according to validation method-like criteria: limit of detection and limit of quantification, repeatability, accuracy, and specificity with recombinant surface glycoprotein gB from human cytomegalovirus (CMV-gB) as model antigen.
Collapse
Affiliation(s)
- Jean-François Cotte
- Sanofi Pasteur, Analytical Research & Development, Campus Mérieux, 1541 avenue Marcel Mérieux, 69280, Marcy l'Etoile, France.
| | - Afifa Bouadam
- Sanofi Pasteur, Analytical Research & Development, Campus Mérieux, 1541 avenue Marcel Mérieux, 69280, Marcy l'Etoile, France
| | - Agathe Sordoillet
- Sanofi Pasteur, Analytical Research & Development, Campus Mérieux, 1541 avenue Marcel Mérieux, 69280, Marcy l'Etoile, France
| | - Isabelle Jaudinaud
- Sanofi Pasteur, Analytical Research & Development, Campus Mérieux, 1541 avenue Marcel Mérieux, 69280, Marcy l'Etoile, France
| | - Véronique Chambon
- Sanofi Pasteur, Analytical Research & Development, Campus Mérieux, 1541 avenue Marcel Mérieux, 69280, Marcy l'Etoile, France
| | - Philippe Talaga
- Sanofi Pasteur, Analytical Research & Development, Campus Mérieux, 1541 avenue Marcel Mérieux, 69280, Marcy l'Etoile, France
| |
Collapse
|
10
|
Woźniakowski G, Tarasiuk K. Visual detection of goose haemorrhagic polyomavirus in geese and ducks by loop-mediated isothermal amplification. Avian Pathol 2015; 44:311-8. [DOI: 10.1080/03079457.2015.1049585] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Grzegorz Woźniakowski
- Department of Swine Diseases, National Veterinary Research Institute, Puławy, Poland
- Department of Poultry Viral Diseases, National Veterinary Research Institute, Puławy, Poland
| | - Karolina Tarasiuk
- Department of Poultry Viral Diseases, National Veterinary Research Institute, Puławy, Poland
| |
Collapse
|
11
|
Gaweł A, Woźniakowski G, Samorek-Salamonowicz E, Kozdruń W, Bobrek K, Bobusia K, Nowak M. Hemorrhagic Nephritis and Enteritis in a Goose Flock in Poland—Disease Course Analysis and Characterization of Etiologic Agent. Avian Dis 2014; 58:518-22. [DOI: 10.1637/10845-041014-reg.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
12
|
Mészáros I, Tóth R, Bálint Á, Dán Á, Jordan I, Zádori Z. Propagation of viruses infecting waterfowl on continuous cell lines of Muscovy duck (Cairina moschata) origin. Avian Pathol 2014; 43:379-86. [DOI: 10.1080/03079457.2014.939941] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
13
|
Fehér E, Lengyel G, Dán Á, Farkas S, Bányai K. Whole genome sequence of a goose haemorrhagic polyomavirus detected in Hungary. Acta Microbiol Immunol Hung 2014; 61:221-7. [PMID: 24939688 DOI: 10.1556/amicr.61.2014.2.11] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Goose haemorrhagic polyomavirus (GHPV) provoke haemorrhagic nephritis and enteritis of domestic geese. Outbreaks were detected in European countries and caused economic losses for goose keepers. Domestic ducks may be infected with GHPV without any signs typical for geese. The genomic organisation of some isolates was described but the gene functions and the pathomechanisms of the virus was not precisely defined. Here we describe the genome sequence and structure of GHPV of a goose from a Hungarian goose flock showing characteristics of the haemorrhagic nephritis and enteritis. The GHPV genome investigated in this study was 5252 bp long and was very similar (99% nucleotide identity) to sequences deposited in the GenBank. All the whole GHPV genomes possess the same ORFs in length, including the VP1, VP2, VP3, ORF-X, t and T tumour antigens. Amino acid changes are detected mainly in the putative ORF-X region. Data about the GHPV genome imply a conserved genomic structure among isolates from different countries. Genomic and epidemiological studies may help vaccine development efforts and identify potential heterologous reservoirs of GHPV.
Collapse
Affiliation(s)
- Enikő Fehér
- 1 Hungarian Academy of Sciences Institute for Veterinary Medical Research, Centre for Agricultural Research Budapest Hungary
| | - György Lengyel
- 2 Hungarian Defence Forces Military Medical Centre Budapest Hungary
| | - Ádám Dán
- 3 National Food Chain Safety Office Veterinary Diagnostic Directorate Budapest Hungary
| | - Szilvia Farkas
- 1 Hungarian Academy of Sciences Institute for Veterinary Medical Research, Centre for Agricultural Research Budapest Hungary
| | - Krisztián Bányai
- 1 Hungarian Academy of Sciences Institute for Veterinary Medical Research, Centre for Agricultural Research Budapest Hungary
| |
Collapse
|
14
|
Topuzogullari M, Cakir Koc R, Dincer Isoglu S, Bagirova M, Akdeste Z, Elcicek S, Oztel ON, Yesilkir Baydar S, Canim Ates S, Allahverdiyev AM. Conjugation, characterization and toxicity of lipophosphoglycan-polyacrylic acid conjugate for vaccination against leishmaniasis. J Biomed Sci 2013; 20:35. [PMID: 23731716 PMCID: PMC3682889 DOI: 10.1186/1423-0127-20-35] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 05/16/2013] [Indexed: 11/20/2022] Open
Abstract
Research on the conjugates of synthetic polyelectrolytes with antigenic molecules, such as proteins, peptides, or carbohydrates, is an attractive area due to their highly immunogenic character in comparison to classical adjuvants. For example, polyacrylic acid (PAA) is a weak polyelectrolyte and has been used in several biomedical applications such as immunological studies, drug delivery, and enzyme immobilization. However, to our knowledge, there are no studies that document immune-stimulant properties of PAA in Leishmania infection. Therefore, we aimed to develop a potential vaccine candidate against leishmaniasis by covalently conjugating PAA with an immunologically vital molecule of lipophosphoglycan (LPG) found in Leishmania parasites. In the study, LPG and PAA were conjugated by a multi-step procedure, and final products were analyzed with GPC and MALDI-TOF MS techniques. In cytotoxicity experiments, LPG-PAA conjugates did not indicate toxic effects on L929 and J774 murine macrophage cells. We assume that LPG-PAA conjugate can be a potential vaccine candidate, and will be immunologically characterized in further studies to prove its potential.
Collapse
|
15
|
Elcicek S, Bagirova M, Allahverdiyev AM. Generation of avirulent Leishmania parasites and induction of nitric oxide production in macrophages by using polyacrylic acid. Exp Parasitol 2013; 133:237-42. [DOI: 10.1016/j.exppara.2012.11.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Revised: 10/31/2012] [Accepted: 11/07/2012] [Indexed: 12/22/2022]
|
16
|
Corrand L, Gelfi J, Albaric O, Etievant M, Pingret JL, Guerin JL. Pathological and epidemiological significance of goose haemorrhagic polyomavirus infection in ducks. Avian Pathol 2011; 40:355-60. [PMID: 21812713 DOI: 10.1080/03079457.2011.582481] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Goose haemorrhagic polyomavirus (GHPV) is the viral agent of haemorrhagic nephritis enteritis of geese, a lethal disease of goslings. It was recently shown that GHPV can also be detected in Muscovy and mule ducks. The goal of the present study was to investigate the pathobiology of GHPV in ducks. In the first experiment, field isolates of GHPV from Muscovy or mule ducks were fully sequenced and compared with goose GHPV. These duck isolates were then used to inoculate 1-day-old goslings. Typical clinical signs and lesions of haemorrhagic nephritis enteritis of geese were reproduced, indicating that "duck-GHPV" isolates are virulent in geese. In the second experiment, 1-day-old and 21-day-old Muscovy ducklings were infected by a reference GHPV strain. In both cases, neither clinical signs nor histopathological lesions were observed. However, the virus was detected in cloacal bursae and sera, and serological responses were detected at 12 days post infection. These findings suggest firstly that one common genotype of GHPV circulates among ducks and geese, and secondly that ducks may be infected by GHPV but show no pathologic evidence of infection, whereas geese express clinical signs. GHPV infection should therefore be considered as being carried in ducks and of epidemiological relevance in cases of contact with goose flocks.
Collapse
|