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Okasha H. Fundamental Uses of Peptides as a New Model in Both Treatment and Diagnosis. Recent Pat Biotechnol 2024; 18:110-127. [PMID: 38282442 DOI: 10.2174/1872208317666230512143508] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/16/2023] [Accepted: 04/04/2023] [Indexed: 01/30/2024]
Abstract
An amino acid short chain is known as a peptide. Peptide bonds are the connections that hold the amino acids of a peptide together in a particular order. Characteristically, the shorter length of peptides helps to identify them from proteins. Different ways are used to classify peptides, including chain length, source of peptides, or their biological functions. The fact that peptides serve several purposes suggests that there is a foundation for improvement in peptide production and structure to enhance action. In addition, many patents on peptides for therapeutic and diagnostic approaches have been obtained. This review aims to give an overview of peptides used recently in treatment and diagnosis.
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Affiliation(s)
- Hend Okasha
- Department of Biochemistry and Molecular Biology, Theodor Bilharz Research Institute, Giza, 12411, Egypt
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2
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Vahedi SM, Salek Ardestani S, Banabazi MH, Clark F. Epidemiology, pathogenesis, and diagnosis of Aleutian disease caused by Aleutian mink disease virus: A literature review with a perspective of genomic breeding for disease control in American mink (Neogale vison). Virus Res 2023; 336:199208. [PMID: 37633597 PMCID: PMC10474236 DOI: 10.1016/j.virusres.2023.199208] [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: 07/17/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 08/28/2023]
Abstract
Aleutian disease (AD) is a multi-systemic infectious disease in American mink (Neogale vison) caused by the Aleutian mink disease virus (AMDV). Commonly referred to as mink plasmacytosis, AD is an economically significant disease in mink-breeding countries. Aleutian disease mainly induces weight loss, lower fertility, and dropped pelt quality in adults and can result in acute interstitial pneumonia with high mortality rates in kits. In this review, we employed the scientific literature on AD over the last 70 years to discuss the historical and contemporary status of AD outbreaks and seroprevalence in mink farming countries. We also explained different forms of AD and the differences between the pathogenicity of the virus in kits and adults. The application of the available AD serological tests in AD control strategies was argued. We explained how selection programs could help AD control and proposed different approaches to selecting animals for building AD-tolerant herds. The advantages of genomic selection for AD tolerance over traditional breeding strategies were discussed in detail. We also explained how genomic selection could help AD control by selecting tolerant animals for the next generation based on genome-wide single nucleotide polymorphisms (SNP) data and the challenges of implementing genomic selection for AD tolerance in the mink industry. This review collected the information required for designing successful breeding programs for AD tolerance. Examples of the application of information are presented, and data gaps are highlighted. We showed that AD tolerance is necessary to be among the traits that animals are selected for in the mink industry.
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Affiliation(s)
- Seyed Milad Vahedi
- Department of Animal Science and Aquaculture, Dalhousie University, Bible Hill, NS B2N5E3, Canada
| | | | - Mohammad Hossein Banabazi
- Department of animal breeding and genetics (HGEN), Centre for Veterinary Medicine and Animal Science (VHC), Swedish University of Agricultural Sciences (SLU), Uppsala 75007, Sweden; Department of Biotechnology, Animal Science Research Institute of IRAN (ASRI), Agricultural Research, Education & Extension Organization (AREEO), Karaj 3146618361, Iran.
| | - Fraser Clark
- Department of Animal Science and Aquaculture, Dalhousie University, Bible Hill, NS B2N5E3, Canada.
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Aguilar-Montes de Oca S, Montes-de-Oca-Jiménez R, Carlos Vázquez-Chagoyán J, Barbabosa-Pliego A, Eliana Rivadeneira-Barreiro P, C. Zambrano-Rodríguez P. The Use of Peptides in Veterinary Serodiagnosis of Infectious Diseases: A Review. Vet Sci 2022; 9:vetsci9100561. [PMID: 36288174 PMCID: PMC9610506 DOI: 10.3390/vetsci9100561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 09/26/2022] [Accepted: 09/30/2022] [Indexed: 12/04/2022] Open
Abstract
Peptides constitute an alternative and interesting option to develop treatments, vaccines, and diagnostic tools as they demonstrate their scope in several health aspects; as proof of this, commercial peptides for humans and animals are available on the market and used daily. This review aimed to know the role of peptides in the field of veterinary diagnosis, and include peptide-based enzyme-linked immunosorbent assay (pELISA), lateral flow devices, and peptide latex agglutination tests that have been developed to detect several pathogens including viruses and bacteria of health and production relevance in domestic animals. Studies in cattle, small ruminants, dogs, cats, poultry, horses, and even aquatic organisms were reviewed. Different studies showed good levels of sensitivity and specificity against their target, moreover, comparisons with commercial kits and official tests were performed which allowed appraising their performance. Chemical synthesis, recombinant DNA technology, and enzymatic synthesis were reviewed as well as their advantages and drawbacks. In addition, we discussed the intrinsic limitations such as the small size or affinity to polystyrene membrane and mention several strategies to overcome these problems. The use of peptides will increase in the coming years and their utility for diagnostic purposes in animals must be evaluated.
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Affiliation(s)
- Saúl Aguilar-Montes de Oca
- Centro de Investigación y Estudios Avanzados en Salud Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, Carretera Toluca-Atlacomulco, Km 15.5, Toluca 50200, CP, Mexico
| | - Roberto Montes-de-Oca-Jiménez
- Centro de Investigación y Estudios Avanzados en Salud Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, Carretera Toluca-Atlacomulco, Km 15.5, Toluca 50200, CP, Mexico
- Correspondence:
| | - Juan Carlos Vázquez-Chagoyán
- Centro de Investigación y Estudios Avanzados en Salud Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, Carretera Toluca-Atlacomulco, Km 15.5, Toluca 50200, CP, Mexico
| | - Alberto Barbabosa-Pliego
- Centro de Investigación y Estudios Avanzados en Salud Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, Carretera Toluca-Atlacomulco, Km 15.5, Toluca 50200, CP, Mexico
| | | | - Pablo C. Zambrano-Rodríguez
- Departamento de Veterinaria, Facultad de Ciencias Veterinarias, Universidad Técnica de Manabí, Portoviejo 130105, Ecuador
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Milchram L, Soldo R, Regele V, Schönthaler S, Degeorgi M, Baumgartner S, Kopp E, Weinhäusel A. A novel click chemistry-based peptide ELISA protocol: development and technical evaluation. Biotechniques 2022; 72:134-142. [PMID: 35234537 DOI: 10.2144/btn-2021-0107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
ELISA is the current standard for (auto)antibody diagnostics. Once established, ELISA protocols can be easily adapted for novel antigens; however, peptide-based protocols are rarely available. Herein the authors describe the results of a technical investigation of an indirect ELISA protocol using peptides conjugated onto a protein carrier based on click chemistry and immobilized in standard plastics. The authors compared this approach with the common biotin-avidin system and obtained a slightly improved limit of detection for purified IgG of 25-100 ng/well compared with 25-1000 ng/well. Reproducibility and stability of the methodological approach were conducted for further technical characterization. Indirect ELISA using immunoreactive peptides conjugated to bovine serum albumin offers a reliable method that is complementary to standard plastics and plate readers.
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Affiliation(s)
- Lisa Milchram
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Regina Soldo
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Valerie Regele
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Silvia Schönthaler
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Markus Degeorgi
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Sophie Baumgartner
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Elena Kopp
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Andreas Weinhäusel
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
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5
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Seroprevalence and Molecular Epidemiology of Aleutian Disease in Various Countries during 1972-2021: A Review and Meta-Analysis. Animals (Basel) 2021; 11:ani11102975. [PMID: 34679996 PMCID: PMC8533000 DOI: 10.3390/ani11102975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/08/2021] [Accepted: 10/13/2021] [Indexed: 12/31/2022] Open
Abstract
Simple Summary Aleutian disease is caused by the Aleutian mink disease virus and is one of the most serious infectious diseases that affect the family Mustelidae, including the American mink, wild European mink, weasels, badgers and other animal species, such as skunks, raccoons, dogs, cats and mice, as well as humans. Effective treatments and vaccines against Aleutian disease have not been developed to date. Prophylactic programs that focus on the identification and elimination of infected mink are one of the methods of controlling the negative outcomes of Aleutian disease. This article analyses the seroprevalence of Aleutian mink disease virus infections in American and European mink and other species around the world, and reviews recent knowledge relating to the molecular epidemiology of the Aleutian mink disease virus. Abstract Aleutian disease (AD) poses a serious threat to both free-ranging and farmed mink around the world. The disease is caused by the Aleutian mink disease virus (AMDV), which also poses a health risk for other members of the family Mustelidae, including wild mink, weasels, badgers and other animal species. This article analyses the seroprevalence of AMDV infections in mink and other species around the world, and reviews recent knowledge relating to the molecular epidemiology of the AMDV. Depending on the applied diagnostic technique and the country, the prevalence of anti-AMDV antibodies or AMDV DNA was established at 21.60–100.00% in farmed American mink, 0.00–93.30% in free-ranging American mink and 0.00–25.00% in European mink. Anti-AMDV antibodies or AMDV DNA were also detected in other free-living fur-bearing animals in Europe and Canada, where their prevalence was determined at 0.00–32.00% and 0.00–70.50%, respectively. This may indicate a potential threat to various animal species. AMDV strains are not clustered into genotypes based on the geographic origin, year of isolation or pathogenicity. The isolates that were identified on mink farms around the world originated from North America because American mink were introduced to Europe and Asia for breeding purposes and to restock natural populations.
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Markarian NM, Abrahamyan L. AMDV Vaccine: Challenges and Perspectives. Viruses 2021; 13:v13091833. [PMID: 34578415 PMCID: PMC8472842 DOI: 10.3390/v13091833] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/09/2021] [Accepted: 09/09/2021] [Indexed: 12/13/2022] Open
Abstract
Aleutian mink disease virus (AMDV) is known to cause the most significant disease in the mink industry. It is globally widespread and manifested as a deadly plasmacytosis and hyperglobulinemia. So far, measures to control the viral spread have been limited to manual serological testing for AMDV-positive mink. Further, due to the persistent nature of this virus, attempts to eradicate Aleutian disease (AD) have largely failed. Therefore, effective strategies to control the viral spread are of crucial importance for wildlife protection. One potentially key tool in the fight against this disease is by the immunization of mink against AMDV. Throughout many years, several researchers have tried to develop AMDV vaccines and demonstrated varying degrees of protection in mink by those vaccines. Despite these attempts, there are currently no vaccines available against AMDV, allowing the continuation of the spread of Aleutian disease. Herein, we summarize previous AMDV immunization attempts in mink as well as other preventative measures with the purpose to shed light on future studies designing such a potentially crucial preventative tool against Aleutian disease.
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Affiliation(s)
- Nathan M. Markarian
- Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC J2S 2M2, Canada;
| | - Levon Abrahamyan
- Swine and Poultry Infectious Diseases Research Center (CRIPA), Research Group on Infectious Diseases of Production Animals (GREMIP), Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC J2S 2M2, Canada
- Correspondence:
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Lu T, Wang Y, Wu Y, Zhao L, Wu S, Chen H. Development of an antigen-capture enzyme-linked immunosorbent assay for diagnosis of Aleutian mink disease virus. Arch Virol 2020; 166:83-90. [PMID: 33068192 DOI: 10.1007/s00705-020-04850-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 09/06/2020] [Indexed: 11/24/2022]
Abstract
Aleutian mink disease (AMD), caused by Aleutian mink disease virus (AMDV), is a very important infectious disease of mink. Currently, elimination of antibody- or antigen-positive animals is the most successful strategy for eradicating AMD, but the claw-cutting method of blood sampling is difficult to perform and painful for the animal. In this study, we aimed to establish an antigen capture enzyme-linked immunosorbent assay (AC-ELISA) method for the efficient detection of AMDV antigens using fecal samples. A purified mouse monoclonal antibody (mAb) was used as the capture antibody, and a rabbit polyclonal antibody (pAb) was used as the detection antibody. The assay was optimized by adjusting a series of parameters. Using a cutoff value of 0.205, the limit of detection of the AC-ELISA for strain AMDV-G antigen was 2 μg/mL, and there was no cross-reaction with other mink viruses. The intra- and inter-assay standard deviations were below 0.046, and the correlation of variance (CV) values were 1.24-7.12% when testing fecal samples. Compared with conventional PCR results, the specificity and sensitivity were 91.5% and 90.6%, respectively, and the concordance rate between the two methods was 91.1%.
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Affiliation(s)
- Taofeng Lu
- Institute for Laboratory Animal Research, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China
| | - Yuanzhi Wang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 678 Haping Road, Harbin, 150069, China
| | - Yanjun Wu
- Institute for Laboratory Animal Research, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China
| | - Lili Zhao
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 678 Haping Road, Harbin, 150069, China
| | - Shuguang Wu
- Institute for Laboratory Animal Research, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China
| | - Hongyan Chen
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 678 Haping Road, Harbin, 150069, China.
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Areewong C, Rittipornlertrak A, Nambooppha B, Fhaikrue I, Singhla T, Sodarat C, Prachasilchai W, Vongchan P, Sthitmatee N. Evaluation of an in-house indirect enzyme-linked immunosorbent assay of feline panleukopenia VP2 subunit antigen in comparison to hemagglutination inhibition assay to monitor tiger antibody levels by Bayesian approach. BMC Vet Res 2020; 16:275. [PMID: 32762697 PMCID: PMC7409676 DOI: 10.1186/s12917-020-02496-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 07/27/2020] [Indexed: 11/25/2022] Open
Abstract
Background Feline panleukopenia virus (FPV) is an etiologic pathogen of feline panleukopenia that infects all members of Felidae including tigers (Panthera tigris). Vaccinations against FPV among wild felid species have long been practiced in zoos worldwide. However, few studies have assessed the tiger immune response post-vaccination due to the absence of a serological diagnostic tool. To address these limitations, this study aimed to develop an in-house indirect enzyme-linked immunosorbent assay (ELISA) for the monitoring of tiger antibody levels against the feline panleukopenia vaccine by employing the synthesized subunit capsid protein VP2. An in-house horseradish peroxidase (HRP) conjugated rabbit anti-tiger immunoglobulin G (IgG) polyclonal antibody (HRP-anti-tiger IgG) was produced in this study and employed in the assay. It was then compared to a commercial HRP-conjugated goat anti-cat IgG (HRP-anti-cat IgG). Sensitivity and specificity were evaluated using the Bayesian model with preferential conditional dependence between HRP-conjugated antibody-based ELISAs and hemagglutination-inhibition (HI) tests. Results The posterior estimates for sensitivity and specificity of two indirect ELISA HRP-conjugated antibodies were higher than those of the HI test. The sensitivity and specificity of the indirect ELISA for HRP-anti-tiger IgG and HRP-anti-cat IgG were 86.5, 57.2 and 86.7%, 64.6%, respectively, while the results of the HI test were 79.1 and 54.1%. In applications, 89.6% (198/221) and 89.1% (197/221) of the tiger serum samples were determined to be seropositive by indirect ELISA testing against HRP-anti-tiger and HRP-anti-cat, respectively. Conclusion To the best of our knowledge, the specific serology assays for the detection of the tiger IgG antibody have not yet been established. The HRP-anti-tiger IgG has been produced for the purpose of developing the specific immunoassays for tigers. Remarkably, an in-house indirect ELISA based on VP2 subunit antigen has been successfully developed in this study, providing a potentially valuable serological tool for the effective detection of tiger antibodies.
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Affiliation(s)
- Chanakan Areewong
- Graduate School of Veterinary Science, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, 50100, Thailand.,Tiger Kingdom, Mae Rim, Chiang Mai, 50180, Thailand
| | - Amarin Rittipornlertrak
- Graduate School of Veterinary Science, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, 50100, Thailand
| | - Boondarika Nambooppha
- Graduate School of Veterinary Science, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, 50100, Thailand
| | - Itsarapan Fhaikrue
- Graduate School of Veterinary Science, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, 50100, Thailand
| | - Tawatchai Singhla
- Graduate School of Veterinary Science, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, 50100, Thailand
| | - Chollada Sodarat
- Graduate School of Veterinary Science, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, 50100, Thailand
| | - Worapat Prachasilchai
- Graduate School of Veterinary Science, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, 50100, Thailand
| | - Preeyanat Vongchan
- Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Nattawooti Sthitmatee
- Graduate School of Veterinary Science, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, 50100, Thailand. .,Excellence Center in Veterinary Bioscience, Chiang Mai University, Chiang Mai, 50100, Thailand. .,Department of Veterinary Bioscience and Veterinary Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, 50100, Thailand.
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Guevarra LA, Boado KJO, Ceñidoza FBB, Imbao MRLM, Sia MJG, Dalmacio LMM. A synthetic peptide analog of in silico-predicted immunogenic epitope unique to dengue virus serotype 2 NS1 antigen specifically binds immunoglobulin G antibodies raised in rabbits. Microbiol Immunol 2020; 64:153-161. [PMID: 31710119 DOI: 10.1111/1348-0421.12757] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 11/01/2019] [Accepted: 11/06/2019] [Indexed: 12/20/2022]
Abstract
Development of a serotyping-capable dengue detection test is hampered by the absence of an identified unique marker that can detect specific dengue virus (DENV) serotype. In the current commercially available antibody-capture diagnostic methods, immobilized nonstructural 1 (NS1) antigen indiscriminately binds and detects immunoglobulin M or immunoglobulin G against any serotype, thus limiting its capability to distinguish existing serotypes of dengue. Identification of dengue serotype is important because certain serotypes are associated with severe forms of dengue as well as dengue hemorrhagic fever. In this study, we aimed to identify an immunogenic epitope unique to DENV2 NS1 antigen and determine the binding specificity of its synthetic peptide mimotope to antibodies raised in animal models. Selection of a putative B-cell epitope from the reported DENV2 NS1 antigen was done using Kolaskar and Tongaonkar Antigenicity prediction, Emini surface accessibility prediction, and Parker hydrophilicity prediction available at the immune epitope database and analysis resource. Uniqueness of the B-cell epitope to DENV2 was analyzed by BLASTp. Immunogenicity of the synthetic peptide analog of the predicted immunogenic epitope was tested in rabbits. The binding specificity of the antibodies raised in animals and the synthetic peptide mimotope was tested by indirect ELISA. A synthetic peptide analog comprising the unique epitope of DENV2 located at the 170th-183rd position of DENV2 NS1 was found to be immunogenic in animal models. The antipeptide antibody produced in rabbits showed specific binding to the synthetic peptide mimotope of the predicted unique DENV2 NS1 immunogenic epitope.
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Affiliation(s)
- Leonardo A Guevarra
- Department of Biochemistry, Faculty of Pharmacy, University of Santo Tomas, España Blvd, Sampaloc, Manila, Philippines.,Department of Biochemistry and Molecular Biology, College of Medicine, University of the Philippines Manila, 1/F Salcedo Hall Pedro Gil St., Ermita, Manila, Philippines.,Research Center for Natural and Applied Sciences, University of Santo Tomas, España Blvd, Sampaloc, Manila, Philippines
| | - Kathleen Joyce O Boado
- Department of Biochemistry, Faculty of Pharmacy, University of Santo Tomas, España Blvd, Sampaloc, Manila, Philippines
| | - Fidel Bryan B Ceñidoza
- Department of Biochemistry, Faculty of Pharmacy, University of Santo Tomas, España Blvd, Sampaloc, Manila, Philippines
| | - Ma Rio Lauren M Imbao
- Department of Biochemistry, Faculty of Pharmacy, University of Santo Tomas, España Blvd, Sampaloc, Manila, Philippines
| | - Michelle Joy G Sia
- Department of Biochemistry, Faculty of Pharmacy, University of Santo Tomas, España Blvd, Sampaloc, Manila, Philippines
| | - Leslie Michelle M Dalmacio
- Department of Biochemistry and Molecular Biology, College of Medicine, University of the Philippines Manila, 1/F Salcedo Hall Pedro Gil St., Ermita, Manila, Philippines
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Duplex PCR for Detection of Aleutian Disease Virus from Biological and Environmental Samples. ACTA VET-BEOGRAD 2019. [DOI: 10.2478/acve-2019-0034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Aleutian disease is one of the most serious disease entities affecting mink farms. The disease causes significant economic losses in mink breeding countries. The aim of the study was to optimize a diagnostic test based on duplex PCR to enable detection of Aleutian disease virus in biological and environmental samples.
Blood (n = 40) and spleen (n = 40) samples from animals with suspected infection, and swabs from cages in which infected animals were kept (n = 20) were used for analysis. DNA was isolated from the samples, followed by optimization of the duplex PCR reaction targeting sequences coding NS1 and VP2 proteins. The qPCR method was used to determine the sensitivity of the reaction. The specificity of the analysis was confirmed by the sequencing results.
Optimized duplex PCR enabled detection of Aleutian Mink Disease Virus (AMDV) genetic material in biological and environmental samples. Testing of the sensitivity of the method indicated clear amplification for both primer pairs at 102 copies of viral DNA in a reaction. Sequencing confirmed the specificity of the reaction, which in the case of both primer pairs indicated an over 90% agreement between the isolates and the variants of the virus from the databases.
The use of duplex PCR to detect two regions of the AMDV genome may increase the sensitivity and specificity of the method and significantly expand the possibilities of further analysis based on sequencing.
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Saadat S, Alikhani MY, Rikhtegaran Tehrani Z, Yousefi Mashouf R. Computational design of a new chimeric protein for sero-diagnosis of Mycoplasma hominis. GAZZETTA MEDICA ITALIANA ARCHIVIO PER LE SCIENZE MEDICHE 2019. [DOI: 10.23736/s0393-3660.18.03900-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Li L, Hu Z, Sun J, Guo K, Chu X, Wang X, Lu Y. Development of an EvaGreen-based real-time PCR assay for detection of Aleutian mink disease virus. J Virol Methods 2019; 275:113751. [PMID: 31639372 DOI: 10.1016/j.jviromet.2019.113751] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 10/03/2019] [Accepted: 10/11/2019] [Indexed: 11/18/2022]
Abstract
The objective of this study was to develop a rapid, sensitive and specific EvaGreen (EG)-based real-time PCR assay capable of detecting Aleutian mink disease virus (AMDV) and to evaluate the reliability of the assay for analysis of blood or tissue samples. For this assay, a pair of primers was designed based on a nonstructural protein (NS)-encoding gene of AMDV, and the identity of PCR products was identified based on a melting temperature of 82.8°C. The EG-based real-time PCR assay did not detect canine distemper virus or mink enteritis virus, and the assay could be used to detect Chinese and American AMDV strains, in contrast to a commercial TaqMan kit that could only detect American AMDV strains. The amplification efficiencies of the EG assay were 104.8% for the Chinese strain and 94.4% for the American strain, and the detection limit was 1 copy/μL of AMDV plasmid or 3 pg/μL of viral DNA (Chinese strain). The intra- and inter-assay variation coefficients of melting temperature were all lower than 0.15%, confirming the high reproducibility of the assay. Forty-five clinical blood samples were simultaneously analyzed using the EG real-time PCR, TaqMan kit and conventional PCR, and the detection rates were 91.1%, 0.0% and 86.7%, respectively. Serum samples were also collected from the corresponding blood samples and tested using the counterimmunoelectrophoresis (CIEP) assay, where positive samples accounted for 24.4% of the 45 samples. In conclusion, EG-based real-time PCR is a rapid, sensitive, universal assay that can be effectively utilized as a reliable and specific tool for detection and quantitation of AMDV.
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Affiliation(s)
- Li Li
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, PR China; Harbin Customs District P.R. China, 88 Songshan Road, Harbin 150008, PR China
| | - Zhe Hu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, the Chinese Academy of Agriculture Sciences, 678 Haping Road, Harbin 150001, PR China
| | - Jinhui Sun
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, the Chinese Academy of Agriculture Sciences, 678 Haping Road, Harbin 150001, PR China; College of Animal Science and Technology, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, PR China
| | - Kui Guo
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, the Chinese Academy of Agriculture Sciences, 678 Haping Road, Harbin 150001, PR China
| | - Xiaoyu Chu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, the Chinese Academy of Agriculture Sciences, 678 Haping Road, Harbin 150001, PR China
| | - Xiaojun Wang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, the Chinese Academy of Agriculture Sciences, 678 Haping Road, Harbin 150001, PR China
| | - Yixin Lu
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, PR China.
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13
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Kumar V, Yadav K, Kumar R, Chaudhary N, Kumar S. Glycoprotein D peptide-based diagnostic approach for the detection of avian infectious laryngotracheitis antibodies. Avian Pathol 2019; 48:602-609. [PMID: 31199165 DOI: 10.1080/03079457.2019.1631444] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Infectious laryngotracheitis (ILT) is a highly contagious respiratory disease of chickens, pheasants, and peafowl. It is caused by the alpha herpesvirus, infectious laryngotracheitis virus (ILTV). Glycoprotein D (gD) of ILTV is immunogenic and helps in its binding to the susceptible host cell receptor. In the present study, a recombinant gD protein was expressed in a prokaryotic system to develop a single serum dilution ELISA. In addition, two immunogenic peptides, corresponding to regions 77-89 and 317-328, were identified in gD protein. The peptides were synthesized using solid-phase peptide synthesis, purified using reversed-phase HPLC, and characterized using mass spectrometry. The peptides displayed a good titre and were found to be promising antigens to coat the ELISA plate to detect the ILTV antibodies in the serum sample. The developed ELISA showed 96.9% sensitivity, 87.5% specificity, and 95.3% accuracy as compared to OIE referenced standard indirect ILTV ELISA (whole viral coated). The assay may not differentiate vaccinated from infected birds when the flocks are administered with live attenuated vaccines. However, the assay could be useful to detect the disease condition in birds vaccinated with recombinant vaccine expressing glycoproteins other than gD. The developed ILTV single serum dilution ELISA could be an alternative to the existing diagnostics for the detection of ILTV antibodies.
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Affiliation(s)
- Vishnu Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati , Guwahati , Assam , India
| | - Karamchandra Yadav
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati , Guwahati , Assam , India
| | - Rakesh Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati , Guwahati , Assam , India
| | - Nitin Chaudhary
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati , Guwahati , Assam , India
| | - Sachin Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati , Guwahati , Assam , India
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14
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Guevarra LA, Afable ACF, Belza PJO, Dy KJS, Lee SJQ, Sy-Ortin TT, Albano PMSP. Immunogenicity of a Fap2 peptide mimotope of Fusobacterium nucleatum and its potential use in the diagnosis of colorectal cancer. Infect Agent Cancer 2018; 13:11. [PMID: 29619076 PMCID: PMC5879760 DOI: 10.1186/s13027-018-0184-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 03/21/2018] [Indexed: 02/07/2023] Open
Abstract
Background The role of Fusobacterium nucleatum Fap2 protein in the development of colorectal cancer has recently been explained. Fap2, when bound to the human inhibitory receptor, TIGIT, inhibits the cytotoxic activity of natural killer (NK) cells against cancer cells, thus, allowing proliferation of the latter eventually leading to tumor growth. The aim of the study was to identify the immunogenicity of a peptide mimotope of the Fap2 protein and to determine the reactivity of colorectal cancer patients’ sera against the mimotope. Methods Immunogenic epitope of the Fap2 protein of F. nucleatum was selected using the B-cell epitope prediction of the Immune Epitope Database and Analysis Resource (IEDB). The immunogenicity of the synthetic peptide mimotope of the Fap2 protein was determined in animal models and reactivity of colorectal cancer patients’ sera against the mimotope was done by indirect ELISA. Results Results show that the selected peptide mimotope, with sequence TELAYKHYFGT, of the outer membrane protein Fap2 of F. nucleatum is immunogenic. Increase in the absorbance readings of peptide-immunized rabbit sera was observed starting Week 1 which was sustained up to Week 10 in the indirect ELISA performed. Colorectal cancer cases (n = 37) were all reactive in an ELISA-based analysis using the mimotope as the capture antigen. Conclusions In this study, we identified an immunogenic epitope of the Fap2 protein of the Fusobacterium nucleatum. We demonstrated the reactivity of serum of histopathologically confirmed CRC patients in a peptide-capture indirect ELISA which may serve as proof of concept for the development of CRC diagnostics.
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Affiliation(s)
- Leonardo A Guevarra
- 1Department of Biochemistry, Faculty of Pharmacy, University of Santo Tomas, Manila, Philippines.,2Research Center for Natural and Applied Sciences, University of Santo Tomas, Manila, Philippines
| | - Andrea Claudine F Afable
- 1Department of Biochemistry, Faculty of Pharmacy, University of Santo Tomas, Manila, Philippines
| | - Patricia Joyce O Belza
- 1Department of Biochemistry, Faculty of Pharmacy, University of Santo Tomas, Manila, Philippines
| | - Karen Joy S Dy
- 1Department of Biochemistry, Faculty of Pharmacy, University of Santo Tomas, Manila, Philippines
| | - Scott Justin Q Lee
- 1Department of Biochemistry, Faculty of Pharmacy, University of Santo Tomas, Manila, Philippines
| | - Teresa T Sy-Ortin
- 3Benavidez Cancer Institute, University of Santo Tomas Hospital, Manila, Philippines
| | - Pia Marie S P Albano
- 2Research Center for Natural and Applied Sciences, University of Santo Tomas, Manila, Philippines.,4Department of Biological Sciences, College of Science, University of Santo Tomas, Manila, Philippines
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15
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Lu T, Wang Y, Ge J, Ma Q, Yan W, Zhang Y, Zhao L, Chen H. Identification and characterization of a novel B-cell epitope on Aleutian Mink Disease virus capsid protein VP2 using a monoclonal antibody. Virus Res 2017; 248:74-79. [PMID: 29278728 DOI: 10.1016/j.virusres.2017.12.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 12/15/2017] [Accepted: 12/18/2017] [Indexed: 11/30/2022]
Abstract
Aleutian mink disease is caused by a highly contagious parvovirus (Aleutian mink disease virus, AMDV). This disease is one of the most commercially important infectious disease worldwide and causes considerable economic losses to mink farmers. The capsid protein VP2 is the major immunogenic antigenic protein of AMDV, and is involved in viral tropism, pathogenicity, and host selection. However, few reports have described the use of VP2-specific monoclonal antibodies (mAbs) in B-cell epitope identification and immunological detection. In this study, we produced a specific mAb, 1G5, against AMDV VP2 protein (amino acids: 200 ∼ 588) and characterized its specificity and relative affinity. Six partially overlapping truncated recombinant proteins and seven synthetized peptides were used to identify the epitopes recognized by 1G5. The results indicate that mAb 1G5 can distinguish AMDV, MEV and CPV2 with high affinity (Ka = 5.37 × 109), and the minimal linear epitope is located in amino acid residues 459EEEGWPAASGTHFED473. Sequence alignments demonstrated that the linear epitope was completely conserved among most Amdoparvoviruses except the bat parvovirus, where three substitutions (463W-463F, 466A-466G and 471F-471Y) were noted. Our results reveal that the identified epitope might be a common B-cell epitope of AMDV antibodies, and the 1G5 mAb can be used to identify the cleavage of the capsid proteins during AMDV infection. This is also the first report of a B-cell epitope on AMDV capsid protein VP2 (VP2: 459-473) using a mAb. These findings have potential applications in the development of new diagnostic tools for AMDV.
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Affiliation(s)
- Taofeng Lu
- Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 678 Haping Road, Harbin, 150069, People's Republic of China
| | - Yuanzhi Wang
- Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 678 Haping Road, Harbin, 150069, People's Republic of China
| | - Junwei Ge
- Veterinary Department, Northeast Agricultural University, 59 Mucai Street, Harbin, 150030, People's Republic of China
| | - Qin Ma
- Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 678 Haping Road, Harbin, 150069, People's Republic of China
| | - Wenzhuo Yan
- Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 678 Haping Road, Harbin, 150069, People's Republic of China
| | - Yuanyuan Zhang
- Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 678 Haping Road, Harbin, 150069, People's Republic of China
| | - Lili Zhao
- Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 678 Haping Road, Harbin, 150069, People's Republic of China
| | - Hongyan Chen
- Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 678 Haping Road, Harbin, 150069, People's Republic of China.
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Miles S, Navatta M, Dematteis S, Mourglia-Ettlin G. Identification of universal diagnostic peptide candidates for neglected tropical diseases caused by cestodes through the integration of multi-genome-wide analyses and immunoinformatic predictions. INFECTION GENETICS AND EVOLUTION 2017; 54:338-346. [DOI: 10.1016/j.meegid.2017.07.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 06/16/2017] [Accepted: 07/15/2017] [Indexed: 12/31/2022]
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