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Araújo Pereira MO, Júnior ÁF, Batista Rodrigues ES, Mulser H, Nascimento de Mello E Silva G, Pio Dos Santos WT, de Souza Gil E. An impedimetric immunosensor for diagnosis of Brazilian spotted fever in blood plasma. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:189-195. [PMID: 38098444 DOI: 10.1039/d3ay01308a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Brazilian spotted fever (BSF) is a serious disease of medical importance due to its rapid evolution and high lethality. The effectiveness of the treatment mainly depends on the rapid diagnosis, which is currently performed by indirect immunofluorescence and PCR tests, which require high costs and laboratory structure. In order to propose an alternative methodology, we sought to develop an impedimetric immunosensor (IM) based on the immobilization of specific IgY antibodies for IgG anti Rickettsia rickettsii, using blood plasma from capybara (Hydrochoerus hydrochaeris), for characterization, validation and applications of the ready IM. IM selectivity was observed when comparing capybara reagent IgG (IgGcr) readings with non-reagent IgG (IgGnr). A reagent IgG calibration curve was obtained, from which the limits of detection (LOD) and quantification (LOQ) of 1.3 ng mL-1 and 4.4 ng mL-1 were calculated, respectively. The accuracy tests showed that different concentrations of IgGcr showed a maximum deviation of 20.0%, with CI between 90.00% and 95.00%. Intermediate precision tests showed a relative standard deviation of 2.09% for researcher 1 and 2.61% for researcher 2, and the F test showed no significant difference between the recovery values found between the two analysts, since Fcal 1.56 < 5.05 and P-value 0.48 > 0, 05. Therefore, an impedimetric immunosensor was developed to detect anti BSF IgG in capybara blood plasma, which greatly contributes to the improvement of diagnostic tests, cost reduction and ease of execution.
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Affiliation(s)
| | | | | | - Helena Mulser
- School of Pharmacy, Federal University of Goiás, Brazil.
| | | | - Wallans Torres Pio Dos Santos
- Chemistry Department, Federal University of Vales do Jequitinhonha e Mucuri, Campus JK, 39100000, Diamantina, Minas Gerais, Brazil
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Pacheco BLB, Nogueira CP, Venancio EJ. IgY Antibodies from Birds: A Review on Affinity and Avidity. Animals (Basel) 2023; 13:3130. [PMID: 37835736 PMCID: PMC10571861 DOI: 10.3390/ani13193130] [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: 08/30/2023] [Revised: 09/29/2023] [Accepted: 10/04/2023] [Indexed: 10/15/2023] Open
Abstract
IgY antibodies are found in the blood and yolk of eggs. Several studies show the feasibility of utilising IgY for immunotherapy and immunodiagnosis. These antibodies have been studied because they fulfil the current needs for reducing, replacing, and improving the use of animals. Affinity and avidity represent the strength of the antigen-antibody interaction and directly influence antibody action. The aim of this review was to examine the factors that influence the affinity and avidity of IgY antibodies and the methodologies used to determine these variables. In birds, there are few studies on the maturation of antibody affinity and avidity, and these studies suggest that the use of an adjuvant-type of antigen, the animal lineage, the number of immunisations, and the time interfered with the affinity and avidity of IgY antibodies. Regarding the methodologies, most studies use chaotropic agents to determine the avidity index. Studies involving the solution phase and equilibrium titration reactions are also described. These results demonstrate the need for the standardisation of methodologies for the determination of affinity and avidity so that further studies can be performed to optimise the production of high avidity IgY antibodies.
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Affiliation(s)
| | - Camila Parada Nogueira
- Scientific Initiation Programme, Animal Science Course, State University of Londrina, Londrina 86038-350, Brazil;
| | - Emerson José Venancio
- Department of Pathological Sciences, State University of Londrina, Londrina 86038-350, Brazil
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Fasihi-Karami M, Sayyah M, Kazemi F, Arjmand R. Comparison of Toxoplasmosis in Narcotic Drug-addicted and Healthy Persons in the Southwest of Iran; A Case-control Study. Cent Nerv Syst Agents Med Chem 2023; 23:65-70. [PMID: 36718972 DOI: 10.2174/1871524923666230131152727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/18/2022] [Accepted: 12/16/2022] [Indexed: 02/01/2023]
Abstract
INTRODUCTION Toxoplasmosis and narcotic drug addiction are endemic in various regions of Iran. These drugs can provide situations for infections by disrupting the immune system. The current case-control study was designed to determine the prevalence of toxoplasmosis in narcotic drugaddicted persons in comparison with healthy subjects using serology and molecular techniques in the southwest of Iran. METHODS A total of 201 subjects (including 101 individuals with drug addiction and 100 control participants) were randomly selected. Chronic and acute toxoplasmosis was detected using the enzymelinked immunosorbent assay (ELISA) IgG avidity. T. gondii immunoglobulin G (IgG) and immunoglobulin M (IgM) were also determined by the ELISA. Moreover, the presence of T. gondii in blood samples was diagnosed using the nested-polymerase chain reaction (Nested-PCR). RESULTS For T. gondii IgG, 17 (17.0%) of 100 and 39 (38.6%) of 101 cases were diagnosed in the control participants and drug-addicted people, respectively [P=0.001, OR=3.071, CI= (1.591-5.929)]. Moreover, 16 (15.8) and 5 (5.0%) cases were positive for the B1 gene in the drug-addicted patients and controls by the nested-PCR technique, respectively [P=0.019, OR=3.576, CI= (1.257-10.179)]. However, no significant differences were found between the opium (n=64) and crystal methamphetamine (n=37) groups in terms of T. gondii IgG and IgM antibodies and the presence of the parasite in the blood (P>0.05). CONCLUSION The present results demonstrated that the outbreak of the infection was more frequent in narcotic drug-addicted persons than the controls using serology and molecular techniques.
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Affiliation(s)
- Maryam Fasihi-Karami
- Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Parasitology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mehdi Sayyah
- Education Development Center (EDC), Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Forough Kazemi
- Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Parasitology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Reza Arjmand
- Department of Parasitology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Hyperimmunized Chickens Produce Neutralizing Antibodies against SARS-CoV-2. Viruses 2022; 14:v14071510. [PMID: 35891490 PMCID: PMC9318545 DOI: 10.3390/v14071510] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 06/24/2022] [Accepted: 07/07/2022] [Indexed: 12/12/2022] Open
Abstract
The novel severe acute respiratory syndrome (SARS) coronavirus, SARS-CoV-2, is responsible for the global COVID-19 pandemic. Effective interventions are urgently needed to mitigate the effects of COVID-19 and likely require multiple strategies. Egg-extracted antibody therapies are a low-cost and scalable strategy to protect at-risk individuals from SARS-CoV-2 infection. Commercial laying hens were hyperimmunized against the SARS-CoV-2 S1 protein using three different S1 recombinant proteins and three different doses. Sera and egg yolk were collected at three and six weeks after the second immunization for enzyme-linked immunosorbent assay and plaque-reduction neutralization assay to determine antigen-specific antibody titers and neutralizing antibody titers, respectively. In this study we demonstrate that hens hyperimmunized against the SARS-CoV-2 recombinant S1 and receptor binding domain (RBD) proteins produced neutralizing antibodies against SARS-CoV-2. We further demonstrate that antibody production was dependent on the dose and type of antigen administered. Our data suggests that antibodies purified from the egg yolk of hyperimmunized hens can be used as immunoprophylaxis in humans at risk of exposure to SARS-CoV-2.
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Shi X, Sun H, Li H, Wei S, Jin J, Zhao C, Wang J, Li H. Preparation of IgY Oriented Conjugated Fe3O4 MNPs as Immunomagnetic Nanoprobe for Increasing Enrichment Efficiency of Staphylococcus aureus Based on Adjusting the pH of the Solution System. Front Public Health 2022; 10:865828. [PMID: 35669739 PMCID: PMC9163370 DOI: 10.3389/fpubh.2022.865828] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 04/04/2022] [Indexed: 11/13/2022] Open
Abstract
Immunomagnetic separation based on Fe3O4 magnetic nanoparticles (MNPs) has been widely performed in sample pretreatment. The oriented conjugation strategy can achieve a better capture effect than the N-(3-dimethylamlnopropyl)-N'-ethylcarbodiimide hydrochloride (EDC) /N-hydroxysuccinimide (NHS) method. However, immunoglobulin yolk (IgY) cannot be oriented through an SPA strategy like immunoglobulin G (IgG). In this article, an oriented conjugation nanoprobe was prepared for the enrichment of bacteria based on pH adjusting. The main factors affecting the enrichment efficiency were studied, such as the pH of the buffer system, the concentration of IgY, the concentration of nanoprobe, and the enrichment time. Under the optimal conditions, the enrichment efficiency toward target bacteria could reach 92.8%. Combined with PCR, the limit of detection (LOD) was found to be 103 CFU/ml, which was lower than the PCR only. In conclusion, we provided a new protocol for the oriented conjugation of IgY and high sensitivity detection with simple pretreatment.
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Affiliation(s)
- Xuening Shi
- School of Public Health, Jilin University, Changchun, China
| | - Hongbin Sun
- China-Japan Union Hospital of Jilin University, Changchun, China
| | - Hang Li
- School of Public Health, Jilin University, Changchun, China
| | - Shengnan Wei
- School of Public Health, Jilin University, Changchun, China
| | - Jin Jin
- School of Public Health, Jilin University, Changchun, China
| | - Chao Zhao
- School of Public Health, Jilin University, Changchun, China
| | - Juan Wang
- School of Public Health, Jilin University, Changchun, China
- *Correspondence: Juan Wang
| | - Hui Li
- School of Public Health, Jilin University, Changchun, China
- Hui Li
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Silva GBD, Faria LSD, Lopes CA, Nunes DS, Ribeiro VS, de Sousa JEN, Paiva GCM, Gonçalves-Pires MRF, Borges IP, Santos MM, Ávila VMR, Júnior ÁF, Costa-Cruz JM. Egg yolk immunoglobulin Y as a promising tool to detect immune complexes in neurocysticercosis serum samples. Trans R Soc Trop Med Hyg 2021; 114:585-592. [PMID: 32484880 DOI: 10.1093/trstmh/traa028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 12/10/2019] [Accepted: 04/07/2020] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Neurocysticercosis (NCC) is a neglected tropical disease and its diagnosis is still a challenge due to non-specific manifestations. Neuroimaging techniques are used in the diagnosis of NCC, however, due to the high cost of these methods and the advantages presented in the use of immunological tests, such as ease of performance and satisfactory results, immunoassays are commonly used to detect antibodies against Taenia sp. antigens. The aim of the present study was to produce, characterize and apply specific polyclonal immunoglobulin Y (IgY) anti-Taenia crassiceps extracted from egg yolk of hens immunized with T. crassiceps metacestodes. METHODS Indirect enzyme-linked immunosorbent assay (ELISA), avidity ELISA, immunoblotting and indirect immunofluorescence tests were performed for characterization of IgY antibodies. Diagnostic performance was verified by ELISA for immune complex detection testing 90 serum samples. RESULTS Values of sensitivity, specificity, positive and negative likelihood ratios (LR+/LR-) and area under the curve (AUC) were calculated and presented the following results: sensitivity 83.3%, specificity 96.7%, AUC 0.966, LR+ 25.0 and LR- 0.17. CONCLUSIONS Results of this pioneering and innovative study demonstrate that anti-T. crassiceps IgY antibodies present potential applicability and can be used as an efficient tool in human NCC serodiagnosis.
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Affiliation(s)
- Gabriela B da Silva
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Pará, 1720, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Lucas S da Faria
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Pará, 1720, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Camila A Lopes
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Pará, 1720, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Daniela S Nunes
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Pará, 1720, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Vanessa S Ribeiro
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Pará, 1720, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - José Eduardo N de Sousa
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Pará, 1720, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Guilherme C M Paiva
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Pará, 1720, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Maria R F Gonçalves-Pires
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Pará, 1720, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Isabela P Borges
- Laboratório de Bioquímica e Toxinas Animais, Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, Av. Pará, 1720, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Malú M Santos
- Programa de Pós-Graduação em Sanidade e Produção Animal nos Trópicos, Universidade de Uberaba, Campus Aeroporto. Av. Nenê Sabino, 1802, sala 2D05, Uberaba, Minas Gerais, 38055-500, Brazil
| | - Veridiana M R Ávila
- Laboratório de Bioquímica e Toxinas Animais, Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, Av. Pará, 1720, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Álvaro Ferreira Júnior
- Programa de Pós-Graduação em Sanidade e Produção Animal nos Trópicos, Universidade de Uberaba, Campus Aeroporto. Av. Nenê Sabino, 1802, sala 2D05, Uberaba, Minas Gerais, 38055-500, Brazil
| | - Julia M Costa-Cruz
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Pará, 1720, Uberlândia, Minas Gerais, 38400-902, Brazil
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Use of polyclonal IgY antibodies to detect serum immune complexes in patients with active hookworm infection. Parasitology 2020; 147:715-720. [PMID: 32051048 DOI: 10.1017/s0031182020000220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Definitive diagnosis of hookworm infection is usually based on the microscopic detection of eggs in a stool sample; however, several cases display a low or irregular egg output. Serodiagnosis can be a useful tool to identify these cases, but conventional tests do not differentiate past from active infections. The aim of this study was to obtain and apply egg yolk polyclonal immunoglobulin (IgY) antibodies to detect immune complexes (ICs) in serum samples from patients infected with hookworm. Hens were immunized with Ancylostoma ceylanicum saline extract, their eggs were collected and then IgY antibodies were extracted and purified. Antibody purity was tested by 12% sodium dodecyl sulphate polyacrylamide gel electrophoresis and specificity was assessed by immunoblotting and immunofluorescence. IgY production was evaluated by kinetics enzyme-linked immunosorbent assay (ELISA). Sandwich ELISA tested the ability of IgY to detect ICs in serum samples, from which diagnostic parameters were calculated. Antibody responses increased steadily from day 7 to 42. In the immunoblotting assay, IgY recognized two protein complexes. The immunofluorescence assay showed no staining in control samples. The sandwich ELISA presented a very high diagnostic value, with a sensitivity of 90% and a specificity of 86.7%. Our pioneer strategy highlights the potential use of egg yolk IgY as a diagnostic test to detect active hookworm infection.
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Pechelyulko AA, Tarakanova YN, Dmitriev DA, Massino YS, Kost VY, Rogozhin EA, Segal OL, Dmitriev AD. Comparative Analysis of the Efficiency of Chicken and Rabbit Antibodies in Competitive Enzyme Linked Immunoassay for the Detection of Bovine Beta-Casomorphin 7. APPL BIOCHEM MICRO+ 2019. [DOI: 10.1134/s0003683819060103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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IgY antibody and human neurocysticercosis: a novel approach on immunodiagnosis usingTaenia crassicepshydrophobic antigens. Parasitology 2019; 147:240-247. [DOI: 10.1017/s0031182019001446] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
AbstractHuman neurocysticercosis (NCC) is a worldwide neglected disease caused byTaenia soliummetacestode and responsible for various complications and neurological disorders. This study aimed to evaluate the use of specific immunoglobulin Y (IgY) produced by laying hens immunized with a hydrophobic fraction ofTaenia crassicepsmetacestodes (hFTc) in NCC diagnosis. Egg yolk IgY antibodies were fractionated, purified and characterized. Enzyme-linked immunosorbent assay (ELISA) was carried out to evaluate the production kinetics and avidity maturation of anti-hFTcIgY antibodies throughout the IgY obtention process. Antigen recognition tests were carried out by Western blotting and immunofluorescence antibody test using purified and specific anti-hFTcIgY antibodies for detection of parasitic antigens ofT. crassicepsandT. soliummetacestodes. Sandwich ELISA was performed to detect circulating immune complexes formed by IgG and parasitic antigens in human sera. The results showed high diagnostic values (93.2% sensitivity and 94.3% specificity) for immune complexes detection in human sera with confirmed NCC. In conclusion, specific IgY antibodies produced from immunized hens with hFTcantigens were efficient to detectT. soliumimmune complexes in human sera, being an innovative and potential tool for NCC immunodiagnosis.
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Ozkan B, Budama-Kilinc Y, Cakir-Koc R, Mese S, Badur S. Application of an immunoglobulin Y-alkaline phosphatase bioconjugate as a diagnostic tool for influenza A virus. Bioengineered 2019; 10:33-42. [PMID: 30913952 PMCID: PMC6527078 DOI: 10.1080/21655979.2019.1586054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The diagnosis of influenza A virus is essential since it can be confused with influenza A like illness and lead to inaccurate drug prescription. In this study, the M2e peptide, a strategic antigen that is conserved in all virus subtypes, was used as a diagnostic marker of influenza A. For the first time, M2e-specific IgY antibody was covalently conjugated to alkaline phosphatase (ALP) enzyme in the presence of glutaraldehyde. The antibody-enzyme bioconjugate was characterized by fluorescence and Fourier-transform infrared spectroscopy. Subsequently, the diagnostic value of this bioconjugate was evaluated by direct sandwich ELISA using nasopharyngeal swab samples positive/negative for H1N1 and H3N2, which were previously analyzed by rRT-PCR for influenza. In conclusion, the M2e-specific IgY-ALP bioconjugate demonstrated positive results for Influenza A in samples that were diagnosed as Influenza A via the RT-PCR method.
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Affiliation(s)
- Busra Ozkan
- a Department of Bioengineering, Chemical and Metallurgical Engineering Faculty , Yildiz Technical University , Istanbul , Turkey
| | - Yasemin Budama-Kilinc
- a Department of Bioengineering, Chemical and Metallurgical Engineering Faculty , Yildiz Technical University , Istanbul , Turkey
| | - Rabia Cakir-Koc
- a Department of Bioengineering, Chemical and Metallurgical Engineering Faculty , Yildiz Technical University , Istanbul , Turkey
| | - Sevim Mese
- b Department of Virology and Fundamental Immunology, Istanbul Medical Faculty , Istanbul University , Istanbul , Turkey
| | - Selim Badur
- c GlaxoSmithKline-Vaccine , Istanbul , Turkey
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Anti- Ascaris suum immunoglobulin Y as a novel biotechnological tool for the diagnosis of human ascariasis. J Helminthol 2019; 94:e71. [PMID: 31409433 DOI: 10.1017/s0022149x19000701] [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] [Indexed: 02/07/2023]
Abstract
Human ascariasis is a neglected tropical disease of great relevance to public health and is considered the most frequent helminthiasis in poor regions. Accurately diagnosing this parasite has been challenging due to limitations of current diagnostic methods. Immunoglobulin Y (IgY) technology is a very effective alternative for the production of highly specific and profitable antibodies. This study aimed to produce and apply anti-Ascaris suum IgY antibodies in the immunodiagnosis of human ascariasis. Five immunizations comprising total saline extract from A. suum adult life forms were given at 14-day intervals to Gallus gallus domesticus hens of the Isa Brown line. Eggs and blood samples were collected weekly and fortnightly, respectively, to monitor the production of antibodies. The specificity of antibodies was confirmed by dot-blot, kinetic enzyme-linked immunosorbent assay (ELISA), avidity ELISA, immunoblotting and indirect immunofluorescence antibody tests. The application for disease diagnosis was performed through the detection of immune complexes in human serum samples by sandwich ELISA. Peaks of IgY anti-A. suum production occurred at weeks 6 and 8. IgY showed high avidity levels after the second dose of immunization, ranging from 64% to 93%, with a mean avidity index of 78.30%. Purified IgY recognized 12 bands of proteins from A. suum saline extract. Eggs, the uterine portion and cuticles of A. suum female adult are reactive in immunofluorescence. The detection of immune complexes showed diagnostic values of 80% sensitivity and 90% specificity. In conclusion, specific IgY have been shown to be a potential immunodiagnostic tool with promising future applications in human ascariasis.
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ABDOLMALEKI F, ZAMANI Z, TALEBI S. Evaluation of Human Anti IgG Polyclonal Antibody Production Conjugated with Peroxidase in Egg Yolk. IRANIAN JOURNAL OF PUBLIC HEALTH 2019; 48:1326-1334. [PMID: 31497555 PMCID: PMC6708545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Egg yolk is a rich and accessible source of yolk immunoglobulin (Y immunoglobulin). Presently, polyclonal antibodies from mammalian sources are used for diagnosis. Antibody production from egg yolk gives a higher yield and turnover than that from lab animals, and invasive methods such as phlebotomy and causing stress to the animals are not required. Due to the issues regarding mammalian antibodies, we aimed to evaluate the human anti-IgG polyclonal antibody production conjugated with peroxidase in egg yolk. METHODS Population of laying hens reared in Agriculture/Isfahan University of Technology were used in 2017. After immunizing hen against pure human IgG, specific IgY (yolk immunoglobulin) was purified from the yolk by sedimentation with polyethylene glycol (PEG6000). To assess the molecular weight and activity of the product, SDS-PAGE and ELISA-test were used, respectively. RESULTS The complete molecular weight of IgY was 180 kDa and the molecular weight of its light and heavy chains were 27 and 67 kDa, respectively. CONCLUSION Antihuman IgG IgY had a purity above 90%. The product of this study can be used to measure IgG class antibodies in order to diagnose different diseases.
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Affiliation(s)
- Fahimeh ABDOLMALEKI
- Department of Biochemistry, Tehran East Branch, Payam Noor University, Tehran, Iran
| | - Zahra ZAMANI
- Department of Biochemistry, Pasteur Institute of Iran, Tehran, Iran,Corresponding Author:
| | - Somayeh TALEBI
- Department of Microbiology, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
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de Faria LS, de Souza DLN, Ribeiro RP, de Sousa JEN, Borges IP, Ávila VMR, Ferreira-Júnior Á, Goulart LR, Costa-Cruz JM. Highly specific and sensitive anti-Strongyloides venezuelensis IgY antibodies applied to the human strongyloidiasis immunodiagnosis. Parasitol Int 2019; 72:101933. [PMID: 31128257 DOI: 10.1016/j.parint.2019.101933] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 04/12/2019] [Accepted: 05/21/2019] [Indexed: 12/20/2022]
Abstract
Due to the epidemiological problem of the neglected condition of human strongyloidiasis, rapid and effective diagnosis is extremely important, with the development of new diagnostic tools being essential to reduce infections and chronic cases. Avian immunoglobulin Y (IgY) technology is an alternative for antibody production that has high specificity and profitability. This study aimed to produce and fractionate IgY antibodies from the egg yolks of hens that were immunized with the total antigenic extracts of Strongyloides venezuelensis infectious filariform larvae (iL3) and parthenogenetic females (pF). IgY antibodies were then evaluated by their recognition of antigenic proteins, evolutive helminth forms, and serological diagnosis of human strongyloidiasis by the detection of immune complexes in serum samples. Egg yolks were fractionated to obtain IgY antibodies by thiophilic interaction chromatography. Immune complex detection in serum samples showed diagnostic values for anti-iL3 IgY and anti-pF IgY antibodies at 95.56% and 88.89% sensitivity and 95.56% and 91.11% specificity, respectively. Therefore, IgY technology is a promising tool for the detection of blood circulating Strongyloides antigens, with possible application as a serological diagnostic method.
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Affiliation(s)
- Lucas S de Faria
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Pará 1720, Uberlândia, Minas Gerais 38400-902, Brazil
| | - Dayane L N de Souza
- Laboratório de Bioquímica e Toxinas Animais, Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, Av. Pará 1720, Uberlândia, Minas Gerais 38400-902, Brazil
| | - Raphaella P Ribeiro
- Programa de Pós-Graduação em Sanidade e Produção Animal nos Trópicos, Universidade de Uberaba, Campus Aeroporto. Av. Nenê Sabino, sala 2D05,Uberaba, Minas Gerais 38055-500, Brazil
| | - José Eduardo N de Sousa
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Pará 1720, Uberlândia, Minas Gerais 38400-902, Brazil
| | - Isabela P Borges
- Laboratório de Bioquímica e Toxinas Animais, Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, Av. Pará 1720, Uberlândia, Minas Gerais 38400-902, Brazil
| | - Veridiana M R Ávila
- Laboratório de Bioquímica e Toxinas Animais, Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, Av. Pará 1720, Uberlândia, Minas Gerais 38400-902, Brazil
| | - Álvaro Ferreira-Júnior
- Programa de Pós-Graduação em Sanidade e Produção Animal nos Trópicos, Universidade de Uberaba, Campus Aeroporto. Av. Nenê Sabino, sala 2D05,Uberaba, Minas Gerais 38055-500, Brazil
| | - Luiz Ricardo Goulart
- Laboratório de Nanobiotecnologia, Instituto de Genética e Bioquímica, Universidade Federal de Uberlândi, Av Pará 1720, Uberlândia, Minas Gerais 38400-902, Brazil
| | - Julia M Costa-Cruz
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Pará 1720, Uberlândia, Minas Gerais 38400-902, Brazil.
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Budama-Kilinc Y, Cakir-Koc R, Ozdemir B, Kaya Z, Badur S. Production and characterization of a conserved M2e peptide-based specific IgY antibody: evaluation of the diagnostic potential via conjugation with latex nanoparticles. Prep Biochem Biotechnol 2018; 48:930-939. [PMID: 30388960 DOI: 10.1080/10826068.2018.1525564] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Antibodies play an important role in combating and controlling viral diseases such as influenza. Immunoglobulin Y (IgY) antibodies have several advantages such as a less invasive manufacturing process, ease of isolation, higher affinity compared with IgG antibodies, and cost-effectiveness. To date, although specific IgY production has been performed for different strains of influenza A, to the best of our knowledge, an IgY against the M2e peptide has not been produced. In the current study, IgY antibodies are produced, purified, and characterized using the M2e peptide sequence for the first time with the intent to apply them for the diagnosis of influenza A virus. Anti-M2e IgY antibodies are obtained from eggs using a two-step purification method. The activity and characterization of the antibodies are determined using an enzyme-linked immunosorbent assay, a nano-spectrophotometer, an SDS-Page assay, and a Western Blot analysis. Finally, anti-M2e IgY antibodies are conjugated to the latex nanoparticles, and the reaction between the influenza A virus and the nanoparticles is demonstrated using light microscopy, transmission electron microscopy, and energy dispersive X-ray spectroscopy. In conclusion, this study shows that anti-M2e IgY antibodies can contribute to the diagnosis, treatment, and prevention of the influenza A virus.
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Affiliation(s)
| | - Rabia Cakir-Koc
- a Bioengineering Department , Yildiz Technical University , Istanbul , Turkey
| | - Burak Ozdemir
- b Graduate School of Natural and Applied Sciences , Yildiz Technical University , Istanbul , Turkey
| | - Zeynep Kaya
- b Graduate School of Natural and Applied Sciences , Yildiz Technical University , Istanbul , Turkey
| | - Selim Badur
- c GlaxoSmithKline-Vaccine , Istanbul , Turkey
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15
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Development of IgY-Based Sandwich ELISA as a Robust Tool for Rapid Detection and Discrimination of Toxigenic Vibrio cholerae. CANADIAN JOURNAL OF INFECTIOUS DISEASES & MEDICAL MICROBIOLOGY 2018; 2018:4032531. [PMID: 30386445 PMCID: PMC6189684 DOI: 10.1155/2018/4032531] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 08/10/2018] [Accepted: 08/19/2018] [Indexed: 11/17/2022]
Abstract
Background The conventional methods for diagnosis of Vibrio cholerae are time consuming, complicated, and expensive. Development of rapid detection tests is critical for prevention and management of cholera. This study aimed to introduce two sensitive sandwich ELISAs based on avian antibodies (IgY) targeting outer membrane protein W (OmpW) and cytotoxin B (CtxB) antigens of V. cholerae. Methods The sequences of ompW and ctxB genes were cloned into pET28a vector. Escherichia coli BL21 (DE3) was transformed with the recombinant vectors, and gene expression was induced by IPTG. The expressed proteins were purified by affinity chromatography using Ni-NTA resins. Two groups of white Leghorn chickens were immunized by recombinant proteins, and the generated antibodies were purified from egg yolks of chickens by PEG precipitation. The antibodies were used for the development of α-OmpW and α-CtxB ELISAs. Results The expression and purification yielded 59 and 38 mg of recombinant OmpW and CtxB, respectively, per one liter of bacterial culture. PEG precipitation and purification of egg yolk antibodies yielded on average (±SD) 66.5 ± 1.80 and 50.9 ± 2.23 mg of purified α-OmpW and α-CtxB per egg, respectively. The analytical sensitivity of α-OmpW ELISA was 103 cfu/mL of V. cholerae and that of α-CtxB ELISA was 33 pg/mL of recombinant cytotoxin B. The two developed ELISAs did not show any cross-reactivity to any tested bacteria grown in common conditions. Discussion The current study is the first report on using IgY for detection of V. cholerae. The developed ELISAs were shown to have considerable analytical sensitivity and specificity. Therefore, the assays can be one of the convenient methods for sensitive and specific detection of toxigenic V. cholerae strains in clinical and environmental samples.
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16
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Borges IP, Silva MF, Santiago FM, de Faria LS, Júnior ÁF, da Silva RJ, Costa MS, de Freitas V, Yoneyama KAG, Ferro EAV, Lopes DS, Rodrigues RS, de Melo Rodrigues V. Antiparasitic effects induced by polyclonal IgY antibodies anti-phospholipase A2 from Bothrops pauloensis venom. Int J Biol Macromol 2018; 112:333-342. [DOI: 10.1016/j.ijbiomac.2018.01.178] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 01/25/2018] [Accepted: 01/27/2018] [Indexed: 02/07/2023]
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17
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Kumaran T, Thirumalaikumar E, Lelin C, Palanikumar P, Michaelbabu M, Citarasu T. Physicochemical properties of anti Vibrio harveyi egg yolk antibody (IgY) and its immunological influence in Indian white shrimp Fenneropenaeus indicus. FISH & SHELLFISH IMMUNOLOGY 2018; 74:349-362. [PMID: 29307631 DOI: 10.1016/j.fsi.2017.12.062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 12/22/2017] [Accepted: 12/31/2017] [Indexed: 06/07/2023]
Abstract
Edible antibodies specific to host pathogens is an attractive approach to establish protective immunity, especially against gastrointestinal pathogens both in humans and animals. The edible antibody of anti-Vibrio harveyi IgY (anti-V. h IgY) was produced by antigen mixed with immunoadjuvant Asparagus racemosus and Glycine max. Hens were immunized and eggs were collected five weeks after the immunization. Anti-V. harveyi IgY stability in different digestive enzymes such as trypsin and chymotrypsin were evaluated to determine its ability to withstand in the gastrointestinal tract of F. indicus. Specific binding activity and concentration (average 9.5% of total IgY content) of the anti-V. h IgY were determined by the ELISA using V. harveyi antigen. Further the anti-V. h IgY diets including V.h wo, V.h A, V.h G and control diets were fed to F. indicus for 60 days. After 30 and 60 of feeding, group of shrimps were challenged with virulent V. harveyi. After the respective days of feeding, haematological and immunological changes were studied. The parameters including total haemocyte count (THC), coagulase activity, oxyhaemocyanin level, prophenoloxidase, intracellular superoxide anion production, lysozyme, phagocytosis and bacterial agglutinin had significantly (P ≤ .001) increased in the experimental groups in comparission with the control diet fed shrimps. The anti-V. h IgY coated diets helped to reduce the Vibrio load and boosted the immune system in F. indicus's against V. harveyi challenge. The research work shows the potential applications of egg yolk antibodies as anti-bacterial prophylactic uses for infectious diseases and suggests an edible antibody concept as an alternative to conventional antibiotics.
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Affiliation(s)
- Thankamani Kumaran
- Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District 629502, India
| | - Eswaramoorthy Thirumalaikumar
- Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District 629502, India
| | - Chinnadurai Lelin
- Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District 629502, India
| | - Pandi Palanikumar
- Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District 629502, India
| | - Mariavincent Michaelbabu
- Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District 629502, India
| | - Thavasimuthu Citarasu
- Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District 629502, India.
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Grando TH, Baldissera MD, de Sá MF, do Carmo GM, Porto BCZ, Aguirre GSV, Azevedo MI, de Jesus FPK, Santurio JM, Sagrillo MR, Stefani LM, Monteiro SG. Avian antibodies (IgY) against Trypanosoma cruzi: Purification and characterization studies. J Immunol Methods 2017; 449:56-61. [PMID: 28697990 PMCID: PMC7126890 DOI: 10.1016/j.jim.2017.07.002] [Citation(s) in RCA: 12] [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: 06/12/2017] [Revised: 07/07/2017] [Accepted: 07/07/2017] [Indexed: 12/28/2022]
Abstract
Trypanosoma cruzi is a flagellated protozoan belonging to the Trypanosomatidae family, the etiologic agent of Chagas disease. Currently, there is neither a licensed vaccine nor effective treatment, characterizing an unmet clinical need. The IgY refers to the egg yolk immunoglobulin (Y=yolk) and its production and use are subjects of many studies due to the diversity of its diagnostic and therapeutic applications. Several researchers have shown that the use of specific IgY may prevent and/or control infectious and parasitic diseases. Based on these evidences, the aim of this study was to immunize chickens with trypomastigotes of T. cruzi in order to produce highly effective and pure antibodies (IgY), as well as extract, characterize, quantify, and verify cytotoxic effects of IgY anti-T. cruzi. After the induction of IgY production by chickens, the eggs were collected and the IgY was extracted by method of precipitation of polyethylene glycol 6000. The IgY anti-T. cruzi characterization was performed using polyacrylamide gel electrophoresis (SDS-PAGE), western-blot and enzyme-linked immunosorbent assay (ELISA). Moreover, the cytotoxic or proliferative effects of IgY anti-T. cruzi was verified by MTT assay. The concentration of IgY in yolk was 8.41±1.47mg/mL. The characterization of IgY reveled bands of stained peptides with molecular weight between 75 and 50kDa and 37 and 25kDa. In the ELISA test was observed that there was antigen-antibody reaction throughout the sample period. The concentrations of 1, 5 and 10mg/mL of IgY anti-T. cruzi presented no cytotoxic of proliferative effects in mononuclear and VERO cells in vitro. The results indicated that T. cruzi is able to generate a high production of specific immunoglobulins in chickens, it did not cause damage to the cell membrane and no proliferative effect.
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Affiliation(s)
- Thirssa H Grando
- Department of Microbiology and Parasitology, Universidade Federal Santa Maria - UFSM, Santa Maria, Rio Grande do Sul, Brazil.
| | - Matheus D Baldissera
- Department of Microbiology and Parasitology, Universidade Federal Santa Maria - UFSM, Santa Maria, Rio Grande do Sul, Brazil
| | - Mariângela F de Sá
- Department of Microbiology and Parasitology, Universidade Federal Santa Maria - UFSM, Santa Maria, Rio Grande do Sul, Brazil
| | - Guilherme M do Carmo
- Department of Microbiology and Parasitology, Universidade Federal Santa Maria - UFSM, Santa Maria, Rio Grande do Sul, Brazil
| | - Bianca Carolina Z Porto
- Department of Microbiology and Parasitology, Universidade Federal Santa Maria - UFSM, Santa Maria, Rio Grande do Sul, Brazil
| | - Gisele S V Aguirre
- Department of Microbiology and Parasitology, Universidade Federal Santa Maria - UFSM, Santa Maria, Rio Grande do Sul, Brazil
| | - Maria Isabel Azevedo
- Department of Microbiology and Parasitology, Universidade Federal Santa Maria - UFSM, Santa Maria, Rio Grande do Sul, Brazil
| | - Francielli P K de Jesus
- Department of Microbiology and Parasitology, Universidade Federal Santa Maria - UFSM, Santa Maria, Rio Grande do Sul, Brazil
| | - Janio M Santurio
- Department of Microbiology and Parasitology, Universidade Federal Santa Maria - UFSM, Santa Maria, Rio Grande do Sul, Brazil
| | - Michele R Sagrillo
- Laboratory of Cell Culture, Centro Universitário Franciscano, Santa Maria, RS, Brazil
| | - Lenita Moura Stefani
- Department of Animal Science, Universidade do Estado de Santa Catarina (UDESC), Chapecó, SC, Brazil
| | - Silvia Gonzalez Monteiro
- Department of Microbiology and Parasitology, Universidade Federal Santa Maria - UFSM, Santa Maria, Rio Grande do Sul, Brazil.
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Novel Fitc-Labeled Igy Antibody: Fluorescence Imaging Toxoplasma Gondii In Vitro. Sci Rep 2017; 7:852. [PMID: 28404997 PMCID: PMC5429814 DOI: 10.1038/s41598-017-00930-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 03/17/2017] [Indexed: 02/01/2023] Open
Abstract
Toxoplasmosis is caused by T. gondii and can create serious health problems in humans and also worldwide economic harm. Because of the clinical and veterinary importance of toxoplasmosis, its timely and accurate diagnosis has a major impact on disease-fighting strategies. T. gondii surface antigen 1 (SAG1), an immunodominant-specific antigen, is often used as a diagnostic tool. Therefore, the aim of this study was the optimization of novel fluorescein isothiocyanate (FITC) labeling of the SAG1-specific IgY antibody to show the potential for immunofluorescence imaging of T. gondii in vitro. The specificity of IgY antibodies was controlled by an enzyme-linked immunosorbent assay (ELISA), and the concentration of the IgY antibody was detected using a spectrophotometer. The optimum incubation time and FITC concentration were determined with a fluorescence spectrometer. The obtained FITC-labeled IgY was used for marking T. gondii tachyzoites, which were cultured in vitro and viewed using light microscopy. The interaction of the fluorescence-labeled antibody and the T. gondii tachyzoites was examined with a fluorescence microscope. In this study, for the first time, a FITC-labeled anti-SAG1 IgY antibody was developed according to ELISA, fluorescence spectrometer, and fluorescence imaging of cell culture. In the future, the obtained FITC-labeled T. gondii tachyzoites’ specific IgY antibodies may be used as diagnostic tools for the detection of T. gondii infections in different samples.
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Liu J, He Q, Wang W, Zhou B, Li B, Zhang Y, Luo C, Chen D, Tang J, Yu X. Preparation and neutralization efficacy of IgY antibodies raised against Deinagkistrodon acutus venom. J Venom Anim Toxins Incl Trop Dis 2017; 23:22. [PMID: 28396683 PMCID: PMC5379703 DOI: 10.1186/s40409-017-0112-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 03/28/2017] [Indexed: 11/17/2022] Open
Abstract
Background The five-paced pit viper (Deinagkistrodon acutus), endemic to China and northern Vietnam, is responsible for most snakebites in the Chinese territory. Antivenom produced from horses is the main treatment for snakebites, but it may cause numerous clinical side effects and have other disadvantages involved in their production such as the welfare of animals. The present study was conducted aiming to develop an alternative antibody (IgY) from the egg yolk of leghorn chickens immunized with snake venom. Methods IgY from the egg yolk of white leghorn chickens previously immunized intramuscularly with D. acutus venom was extracted by water, precipitated by ammonium sulfate and purified by affinity chromatographic system. IgY was identified by SDS-PAGE, ELISA and Western blot. Finally, IgY neutralization assays to test its efficacy against hemorrhagic, edema-forming and myotoxic activities of D. acutus venom were conducted on mice. Results For the first time, IgY antibodies against D. acutus venom were raised successfully in egg yolk of chickens injected with D. acutus venom multiple times. By three steps, including caprylic acid extraction, ammonium sulfate precipitation and affinity chromatography, IgY antibodies were isolated and purified from egg yolk, which exhibited a single protein band on SDS-PAGE and two bands (about 65 kDa and 35 kDa, respectively) under reducing conditions, and presented a high titer (1:40,000) tested by ELISA. Immunoblot analysis confirmed that these IgY were polyclonal antibodies since they bound to components of D. acutus venom. Furthermore, immunodiffusion assay showed that anti-D. acutus venom IgY cross-reacted with the venoms of Trimeresurus albolabris and D. saxatilis Emelianov, but did not react to the venoms of Bungarus multicinctus and Naja atra. In the neutralizing lethal assay, the median effective dose of anti-D. acutus venom IgY was 14.14 mg/kg of mouse body weight under the challenge dose (3 LD50 of D. acutus venom). In neutralizing the hemorrhagic, edema-forming and myotoxic activities of D. acutus venom, IgY showed the characteristic dose-dependent neutralization effects against all these toxic activities of D. acutus venom. Conclusion Anti-D. acutus venom IgY antibodies with high purity and titer were for the first time raised successfully in egg yolk of chickens immunized with D. acutus venom. They were effective in neutralizing the lethal effects, and the hemorrhagic, edema-forming and myotoxic acitivities of D. acutus venom. IgY could be an effective source to develop a treatment against snake bites in humans or animals in the future.
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Affiliation(s)
- Jinhua Liu
- Animal Toxin Group, Chongqing Key Laboratory of Animal Biology, Chongqing Engineering Research Center of Bioactive Substances, Engineering Research Center of Active Substances and Biotechnology, Ministry of Education, College of Life Science, Chongqing, 401331 China
| | - Qiyi He
- Animal Toxin Group, Chongqing Key Laboratory of Animal Biology, Chongqing Engineering Research Center of Bioactive Substances, Engineering Research Center of Active Substances and Biotechnology, Ministry of Education, College of Life Science, Chongqing, 401331 China
| | - Wenwen Wang
- Animal Toxin Group, Chongqing Key Laboratory of Animal Biology, Chongqing Engineering Research Center of Bioactive Substances, Engineering Research Center of Active Substances and Biotechnology, Ministry of Education, College of Life Science, Chongqing, 401331 China
| | - Bin Zhou
- Library, Chongqing Normal University, Chongqing, 401331 China
| | - Bo Li
- Animal Toxin Group, Chongqing Key Laboratory of Animal Biology, Chongqing Engineering Research Center of Bioactive Substances, Engineering Research Center of Active Substances and Biotechnology, Ministry of Education, College of Life Science, Chongqing, 401331 China
| | - Yingfeng Zhang
- Animal Toxin Group, Chongqing Key Laboratory of Animal Biology, Chongqing Engineering Research Center of Bioactive Substances, Engineering Research Center of Active Substances and Biotechnology, Ministry of Education, College of Life Science, Chongqing, 401331 China
| | - Cong Luo
- Animal Toxin Group, Chongqing Key Laboratory of Animal Biology, Chongqing Engineering Research Center of Bioactive Substances, Engineering Research Center of Active Substances and Biotechnology, Ministry of Education, College of Life Science, Chongqing, 401331 China
| | - Diancheng Chen
- Animal Toxin Group, Chongqing Key Laboratory of Animal Biology, Chongqing Engineering Research Center of Bioactive Substances, Engineering Research Center of Active Substances and Biotechnology, Ministry of Education, College of Life Science, Chongqing, 401331 China
| | - Jia Tang
- Animal Toxin Group, Chongqing Key Laboratory of Animal Biology, Chongqing Engineering Research Center of Bioactive Substances, Engineering Research Center of Active Substances and Biotechnology, Ministry of Education, College of Life Science, Chongqing, 401331 China
| | - Xiaodong Yu
- Animal Toxin Group, Chongqing Key Laboratory of Animal Biology, Chongqing Engineering Research Center of Bioactive Substances, Engineering Research Center of Active Substances and Biotechnology, Ministry of Education, College of Life Science, Chongqing, 401331 China
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Pechelyulko AA, Tarakanova YN, Dmitriev DA, Massino YS, Segal OL, Lavrov VF, Dmitriev AD. A comparative analysis of the efficiency of bird and mammalian antibodies in HBsAg sandwich assay. APPL BIOCHEM MICRO+ 2017. [DOI: 10.1134/s0003683817010136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Sudjarwo SA, Eraiko K, Sudjarwo GW, Koerniasari. The Activity of Immunoglobulin Y Anti- Mycobacterium tuberculosis on Proliferation and Cytokine Expression of Rat Peripheral Blood Mononuclear Cells. Pharmacognosy Res 2017; 9:S5-S8. [PMID: 29333035 PMCID: PMC5757326 DOI: 10.4103/pr.pr_66_17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Objective: It has long been known that chickens, like mammals, are capable of producing antigen-specific immunoglobulin Y (IgY), which functions similar to IgG. The present study was performed to investigate the activity of IgY anti-Mycobacterium tuberculosis on proliferation, interleukin (IL)-2, and interferon (IFN)-γ expression of rat peripheral blood mononuclear cells (PBMCs). Materials and Methods: The activity of IgY anti-M. tuberculosis in different doses (25, 50, and 100 μg/ml) on rat PBMCs proliferation was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide assay. The production of IL-2 and IFN-γ in the PBMC supernatant was determined using enzyme-linked immunosorbent assay. Investigation was performed on mRNA expression of IL-2 and IFN-γ by reverse transcription-polymerase chain reaction (RT-PCR). Results: IgY anti-M. tuberculosis significantly increased the proliferation of rat PBMC. Furthermore, IgY anti-M. tuberculosis dose dependently increased IL-2 and IFN-γ production in PBMC, suggesting that pharmacological activities of IgY anti-M. tuberculosis in PBMC may be mediated by regulating the production of cytokines. In the RT-PCR, expression of cytokines such as IL-2 and IFN-γ in PBMC cultures was increased by IgY anti-M. tuberculosis. Conclusions: We concluded that increasing IL-2 and IFN-γ productions in PBMC was related to IgY anti-M. tuberculosis, stimulating the mRNA transcription (gene expression) of these cytokines which can induce proliferation of PBMC. SUMMARY Lohman laying hens immunized intramuscularly with antigens of M. tuberculosis can produce specific IgY anti-Mycobacterium tuberculosis complex IgY anti-M. tuberculosis significantly increased the proliferation of rat peripheral blood mononuclear cell (PBMC) IgY anti-M. tuberculosis dose dependently increased interleukin 2 (IL-2) and interferon (IFN)-γ production in PBMC In the reverse transcription-polymerase chain reaction, expression of cytokines such as IL-2 and IFN-γ in PBMC cultures was increased by IgY anti-M. tuberculosis The increasing IL-2 and IFN-γ productions in PBMC were related to stimulation on mRNA transcription which can induce proliferation of PBMC.
Abbreviations Used: IgY anti-M. tuberculosis: Immunoglobulin Y anti-Mycobacterium tuberculosis; IL-2: Interleukin-2; IFN-γ: Interferon-γ; PBMCs: Peripheral blood mononuclear cells.
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Affiliation(s)
- Sri Agus Sudjarwo
- Department of Pharmacology, Faculty of Veterinary Medicine, Airlangga University, Surabaya 60115, Indonesia
| | - Koerniasari Eraiko
- Department of Conservative Dentistry, Faculty of Dentistry, Airlangga University, Surabaya 60115, Indonesia
| | - Giftania Wardani Sudjarwo
- Department of Pharmacy Biology, Faculty of Pharmacy, Hang Tuah University, Surabaya 60115, Indonesia
| | - Koerniasari
- Department Microbiology, Study Program of Environmental Health, Polytechnic of Health, Surabaya 60115, Indonesia
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Walczak M, Grzywa R, Łupicka-Słowik A, Skoreński M, Bobrek K, Nowak D, Boivin S, Brown EL, Oleksyszyn J, Sieńczyk M. Method for generation of peptide-specific IgY antibodies directed to Staphylococcus aureus extracellular fibrinogen binding protein epitope. Biopolymers 2016; 104:552-9. [PMID: 26095000 DOI: 10.1002/bip.22695] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 05/07/2015] [Accepted: 06/09/2015] [Indexed: 12/21/2022]
Abstract
The IgY antibodies offer an attractive alternative to mammalian IgGs in research, diagnosis and medicine. The isolation of immunoglobulin Y from the egg yolks is efficient and economical, causing minimal suffering to animals. Here we present the methodology for the production of IgY antibodies specific to Staphylococcus aureus fibrinogen binding protein (Efb) and its peptidyl epitope (spanning residues 127-140). The Efb is an extracellular, adhesion protein which binds both human fibrinogen and complement C3 protein thus contributing to the high infectious potential of this pathogen. The selected epitope of Efb protein is responsible for the interaction with C3. The immunochemical characterization of both anti-Efb and epitope-specific IgY antibodies revealed their similar avidity, titer, and reactivity profile, although some differences in the hen's immune response to administered antigens is discussed.
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Affiliation(s)
- Maciej Walczak
- Division of Medicinal Chemistry and Microbiology, Wroclaw University of Technology, Faculty of Chemistry, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Renata Grzywa
- Division of Medicinal Chemistry and Microbiology, Wroclaw University of Technology, Faculty of Chemistry, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Agnieszka Łupicka-Słowik
- Division of Medicinal Chemistry and Microbiology, Wroclaw University of Technology, Faculty of Chemistry, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Marcin Skoreński
- Division of Medicinal Chemistry and Microbiology, Wroclaw University of Technology, Faculty of Chemistry, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Kamila Bobrek
- Department of Epizootiology and Clinic of Bird and Exotic Animals, Wroclaw University of Environmental and Life Sciences, Faculty of Veterinary Medicine, Pl. Grunwaldzki 45, 50-366, Wroclaw, Poland
| | - Daria Nowak
- Division of Medicinal Chemistry and Microbiology, Wroclaw University of Technology, Faculty of Chemistry, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Stephane Boivin
- European Molecular Biology Laboratory (EMBL), Hamburg Outstation, Notkestrasse 85, 22607, Hamburg, Germany
| | - Eric L Brown
- Center for Infectious Disease, Division of Epidemiology, Human Genetics, and Environmental Sciences, University of Texas Health Science Center, Houston, TX, USA
| | - Józef Oleksyszyn
- Division of Medicinal Chemistry and Microbiology, Wroclaw University of Technology, Faculty of Chemistry, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Marcin Sieńczyk
- Division of Medicinal Chemistry and Microbiology, Wroclaw University of Technology, Faculty of Chemistry, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
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Bastos LM, Macêdo AG, Silva MV, Santiago FM, Ramos ELP, Santos FAA, Pirovani CP, Goulart LR, Mineo TWP, Mineo JR. Toxoplasma gondii-Derived Synthetic Peptides Containing B- and T-Cell Epitopes from GRA2 Protein Are Able to Enhance Mice Survival in a Model of Experimental Toxoplasmosis. Front Cell Infect Microbiol 2016; 6:59. [PMID: 27313992 PMCID: PMC4888622 DOI: 10.3389/fcimb.2016.00059] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 05/19/2016] [Indexed: 11/17/2022] Open
Abstract
Toxoplasmosis is a zoonosis distributed all over the world, which the etiologic agent is an intracellular protozoan parasite, Toxoplasma gondii. This disease may cause abortions and severe diseases in many warm-blood hosts, including humans, particularly the immunocompromised patients. The parasite specialized secretory organelles, as micronemes, rhoptries and dense granules, are critical for the successful parasitism. The dense granule protein 2 (GRA2) is a parasite immunogenic protein secreted during infections and previous studies have been shown that this parasite component is crucial for the formation of intravacuolar membranous nanotubular network (MNN), as well as for secretion into the vacuole and spatial organization of the parasites within the vacuole. In the present study, we produced a monoclonal antibody to GRA2 (C3C5 mAb, isotype IgG2b), mapped the immunodominant epitope of the protein by phage display and built GRA2 synthetic epitopes to evaluate their ability to protect mice in a model of experimental infection. Our results showed that synthetic peptides for B- and T-cell epitopes are able to improve survival of immunized animals. In contrast with non-immunized animals, the immunized mice with both B- and T-cell epitopes had a better balance of cytokines and demonstrated higher levels of IL-10, IL-4 and IL-17 production, though similar levels of TNF-α and IL-6 were observed. The immunization with both B- and T-cell epitopes resulted in survival rate higher than 85% of the challenged mice. Overall, these results demonstrate that immunization with synthetic epitopes for both B- and T-cells from GRA2 protein can be more effective to protect against infection by T. gondii.
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Affiliation(s)
- Luciana M Bastos
- Laboratório de Imunoparasitologia "Dr. Mário Endsfeldz Camargo", Instituto de Ciências Biomédicas, Universidade Federal de UberlândiaUberlândia, Brazil; Laboratório de Nanobiotecnologia, Instituto de Genética e Bioquímica, Universidade Federal de UberlândiaUberlândia, Brazil
| | - Arlindo G Macêdo
- Laboratório de Imunoparasitologia "Dr. Mário Endsfeldz Camargo", Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia Uberlândia, Brazil
| | - Murilo V Silva
- Laboratório de Imunoparasitologia "Dr. Mário Endsfeldz Camargo", Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia Uberlândia, Brazil
| | - Fernanda M Santiago
- Laboratório de Imunoparasitologia "Dr. Mário Endsfeldz Camargo", Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia Uberlândia, Brazil
| | - Eliezer L P Ramos
- Laboratório de Imunoparasitologia "Dr. Mário Endsfeldz Camargo", Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia Uberlândia, Brazil
| | - Fabiana A A Santos
- Laboratório de Nanobiotecnologia, Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia Uberlândia, Brazil
| | - Carlos P Pirovani
- Centro de Biotecnologia e Genética, Universidade Estadual de Santa Cruz Ilhéus, Brazil
| | - Luiz R Goulart
- Laboratório de Nanobiotecnologia, Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia Uberlândia, Brazil
| | - Tiago W P Mineo
- Laboratório de Imunoparasitologia "Dr. Mário Endsfeldz Camargo", Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia Uberlândia, Brazil
| | - José R Mineo
- Laboratório de Imunoparasitologia "Dr. Mário Endsfeldz Camargo", Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia Uberlândia, Brazil
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Cakir-Koc R. Production of anti-SAG1 IgY antibody against Toxoplasma gondii parasites and evaluation of antibody activity by ELISA method. Parasitol Res 2016; 115:2947-52. [PMID: 27079459 DOI: 10.1007/s00436-016-5047-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 04/07/2016] [Indexed: 02/02/2023]
Abstract
Chicken egg yolk antibody, also known as immunoglobulin Y (IgY), is the predominant class of serum immunoglobulin in birds. IgY has many advantages over mammalian antibodies, such as enhanced immunogenicity conserved mammalian proteins exhibited in birds due to their phylogenetic distance, non-invasive rapid, and economical collection system. However, there are limited studies about IgY production against Toxoplasma, which is a worldwide veterinary and public health problem. In this study, the production of specific IgY antibodies against the surface antigen 1 (SAG1) protein of Toxoplasma gondii and the determination of antibody activity via the enzyme-linked immunosorbent assay (ELISA) method were conducted. According to ELISA, Western blot, and NanoDrop results, specific and higher amounts of IgY antibody against SAG1 were obtained with this study. Considering the advantages of IgY and importance of SAG1 for the diagnosis of toxoplasmosis, it is expected that anti-SAG1 IgY will play an increasing role and gain commercial value in research, diagnostics, and immunotherapy against toxoplasmosis in the future.
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Affiliation(s)
- Rabia Cakir-Koc
- Department of Bioengineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, 34210, Esenler, Istanbul, Turkey.
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26
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Xue H, Zhang B, He B, Wang Z, Chen C. Rapid Immunochromatographic Assay for Escherichia coli O157:H7 in Bovine Milk Using IgY Labeled by Fe 3O 4/Au Composite Nanoparticles. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2016. [DOI: 10.3136/fstr.22.53] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Haiyan Xue
- College of Life Science and Engineering, Shaanxi University of Science and Technology
- College of Life Science, Northwest University
| | - Baoyan Zhang
- College of Life Science and Engineering, Shaanxi University of Science and Technology
| | - Baoyuan He
- College of Resource and Environment, Shaanxi University of Science and Technology
| | - Zhanyong Wang
- College of Life Science and Engineering, Shaanxi University of Science and Technology
| | - Chao Chen
- College of Life Science, Northwest University
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Santana SS, Gebrim LC, Carvalho FR, Barros HS, Barros PC, Pajuaba ACAM, Messina V, Possenti A, Cherchi S, Reiche EMV, Navarro IT, Garcia JL, Pozio E, Mineo TWP, Spano F, Mineo JR. CCp5A Protein from Toxoplasma gondii as a Serological Marker of Oocyst-driven Infections in Humans and Domestic Animals. Front Microbiol 2015; 6:1305. [PMID: 26635770 PMCID: PMC4656833 DOI: 10.3389/fmicb.2015.01305] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 11/09/2015] [Indexed: 11/14/2022] Open
Abstract
Considering that the current immunoassays are not able to distinguish the infective forms that cause Toxoplasma gondii infection, the present study was carried out to evaluate the reactivity of two recombinant proteins (CCp5A and OWP1) from oocyst/sporozoite, in order to differentiate infections occurring by ingestion of oocysts or tissue cysts. The reactivity of the recombinant proteins was assessed against panels of serum samples from animals (chickens, pigs, and mice) that were naturally or experimentally infected by different infective stages of the parasite. Also, we tested sera from humans who have been infected by oocysts during a well-characterized toxoplasmosis outbreak, as well as sera from pregnant women tested IgM+/IgG+ for T. gondii, which source of infection was unknown. Only the sporozoite-specific CCp5A protein was able to differentiate the parasite stage that infected chickens, pigs and mice, with specific reactivity for oocyst-infected animals. Furthermore, the CCp5A showed preferential reactivity for recent infection by oocyst/sporozoite in pigs and mice. In humans, CCp5A showed higher reactivity with serum samples from the outbreak, compared with serum from pregnant women. Altogether, these findings demonstrate the usefulness of the CCp5A protein as a new tool to identify the parasite stage of T. gondii infection, allowing its application for diagnosis and epidemiological investigations in animals and humans. The identification of parasite infective stage can help to design effective strategies to minimize severe complications in immunocompromised people and, particularly, in pregnant women to prevent congenital infection.
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Affiliation(s)
- Silas S Santana
- Laboratory of Immunoparasitology, Institute of Biomedical Sciences, Federal University of Uberlândia Uberlândia, Brazil
| | - Luiz C Gebrim
- Laboratory of Immunoparasitology, Institute of Biomedical Sciences, Federal University of Uberlândia Uberlândia, Brazil
| | - Fernando R Carvalho
- Laboratory of Immunoparasitology, Institute of Biomedical Sciences, Federal University of Uberlândia Uberlândia, Brazil
| | - Heber S Barros
- Laboratory of Immunoparasitology, Institute of Biomedical Sciences, Federal University of Uberlândia Uberlândia, Brazil
| | - Patrício C Barros
- Laboratory of Immunoparasitology, Institute of Biomedical Sciences, Federal University of Uberlândia Uberlândia, Brazil
| | - Ana C A M Pajuaba
- Laboratory of Immunoparasitology, Institute of Biomedical Sciences, Federal University of Uberlândia Uberlândia, Brazil
| | - Valeria Messina
- Department of Infectious, Parasitic and Immunomediated Diseases, Istituto Superiore di Sanità Rome, Italy
| | - Alessia Possenti
- Department of Infectious, Parasitic and Immunomediated Diseases, Istituto Superiore di Sanità Rome, Italy
| | - Simona Cherchi
- Department of Infectious, Parasitic and Immunomediated Diseases, Istituto Superiore di Sanità Rome, Italy
| | - Edna M V Reiche
- Department of Clinical Medicine, State University of Londrina - University Hospital Londrina, Brazil
| | - Italmar T Navarro
- Department of Preventive Veterinary Medicine, State University of Londrina Londrina, Brazil
| | - João L Garcia
- Department of Preventive Veterinary Medicine, State University of Londrina Londrina, Brazil
| | - Edoardo Pozio
- Department of Infectious, Parasitic and Immunomediated Diseases, Istituto Superiore di Sanità Rome, Italy
| | - Tiago W P Mineo
- Laboratory of Immunoparasitology, Institute of Biomedical Sciences, Federal University of Uberlândia Uberlândia, Brazil
| | - Furio Spano
- Department of Infectious, Parasitic and Immunomediated Diseases, Istituto Superiore di Sanità Rome, Italy
| | - José R Mineo
- Laboratory of Immunoparasitology, Institute of Biomedical Sciences, Federal University of Uberlândia Uberlândia, Brazil
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Lim SSY, Othman RY. Recent advances in Toxoplasma gondii immunotherapeutics. THE KOREAN JOURNAL OF PARASITOLOGY 2014; 52:581-93. [PMID: 25548409 PMCID: PMC4277020 DOI: 10.3347/kjp.2014.52.6.581] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 08/21/2014] [Accepted: 08/22/2014] [Indexed: 12/11/2022]
Abstract
Toxoplasmosis is an opportunistic infection caused by the protozoan parasite Toxoplasma gondii. T. gondii is widespread globally and causes severe diseases in individuals with impaired immune defences as well as congenitally infected infants. The high prevalence rate in some parts of the world such as South America and Africa, coupled with the current drug treatments that trigger hypersensitivity reactions, makes the development of immunotherapeutics intervention a highly important research priority. Immunotherapeutics strategies could either be a vaccine which would confer a pre-emptive immunity to infection, or passive immunization in cases of disease recrudescence or recurrent clinical diseases. As the severity of clinical manifestations is often greater in developing nations, the development of well-tolerated and safe immunotherapeutics becomes not only a scientific pursuit, but a humanitarian enterprise. In the last few years, much progress has been made in vaccine research with new antigens, novel adjuvants, and innovative vaccine delivery such as nanoparticles and antigen encapsulations. A literature search over the past 5 years showed that most experimental studies were focused on DNA vaccination at 52%, followed by protein vaccination which formed 36% of the studies, live attenuated vaccinations at 9%, and heterologous vaccination at 3%; while there were few on passive immunization. Recent progress in studies on vaccination, passive immunization, as well as insights gained from these immunotherapeutics is highlighted in this review.
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Affiliation(s)
- Sherene Swee-Yin Lim
- Genetics and Molecular Biology Department, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Rofina Yasmin Othman
- Genetics and Molecular Biology Department, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia. ; Centre for Research in Biotechnology for Agriculture, University of Malaya, 50603 Kuala Lumpur, Malaysia
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29
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Production, purification and therapeutic potential of egg yolk antibodies for treating Trypanosoma evansi infection. Vet Parasitol 2014; 204:96-103. [PMID: 24916342 DOI: 10.1016/j.vetpar.2014.05.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 05/14/2014] [Accepted: 05/16/2014] [Indexed: 11/22/2022]
Abstract
The use of avian antibodies has aroused interest in biomedical research due to the numerous advantages compared to mammal's antibodies. Our study aimed to produce and purify IgY immunoglobulins in order to use as an alternative therapy against Trypanosoma evansi. Every 14 days, four New Hampshire chickens were immunized with trypomastigotes of T. evansi, totaling five inoculations. Eggs were collected during 70 days and the extraction of IgY was performed by precipitation through the PEG-6000 method. Characterization and purification of IgY anti-T. evansi were carried out by SDS-PAGE and Western blot, where heavy and light chains were detected. The production of IgY was noted during the whole period, and the average production was 2.87 ± 0.14 at the end of this study. Sample's titration allowed the quantification of specific IgY anti-T. evansi, with antibodies produced showing high avidity indexes. The results indicated that T. evansi is able to generate an immune response in poultry, resulting in a production of specific antibodies. In vivo test showed that IgY treatment resulted in increase of prepatent period, longevity and survival of infected animals, when compared with the positive control, demonstrating an initial, but no curative, trypanocidal activity.
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Toxoplasma gondii 70 kDa heat shock protein: systemic detection is associated with the death of the parasites by the immune response and its increased expression in the brain is associated with parasite replication. PLoS One 2014; 9:e96527. [PMID: 24801069 PMCID: PMC4011789 DOI: 10.1371/journal.pone.0096527] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 04/07/2014] [Indexed: 11/19/2022] Open
Abstract
The heat shock protein of Toxoplasma gondii (TgHSP70) is a parasite virulence factor that is expressed during T. gondii stage conversion. To verify the effect of dexamethasone (DXM)-induced infection reactivation in the TgHSP70-specific humoral immune response and the presence of the protein in the mouse brain, we produced recombinant TgHSP70 and anti-TgHSP70 IgY antibodies to detect the protein, the specific antibody and levels of immune complexes (ICs) systemically, as well as the protein in the brain of resistant (BALB/c) and susceptible (C57BL/6) mice. It was observed higher TgHSP70-specific antibody titers in serum samples of BALB/c compared with C57BL/6 mice. However, the susceptible mice presented the highest levels of TgHSP70 systemically and no detection of specific ICs. The DXM treatment induced increased parasitism and lower inflammatory changes in the brain of C57BL/6, but did not interfere with the cerebral parasitism in BALB/c mice. Additionally, DXM treatment decreased the serological TgHSP70 concentration in both mouse lineages. C57BL/6 mice presented high expression of TgHSP70 in the brain with the progression of infection and under DXM treatment. Taken together, these data indicate that the TgHSP70 release into the bloodstream depends on the death of the parasites mediated by the host immune response, whereas the increased TgHSP70 expression in the brain depends on the multiplication rate of the parasite.
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Tavares TC, Soares PM, Neves JH, Soares MM, F. Junior Á, Souza DLD, Ávila VM, Lima-Ribeiro AM. Produção e purificação de imunoglobulinas Y policlonais anti-Leptospira spp. PESQUISA VETERINARIA BRASILEIRA 2013. [DOI: 10.1590/s0100-736x2013000900008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Objetivou-se verificar se galinhas imunizadas com uma solução de Leptospira interrogans inativadas e proteínas de membrana externa do sorovar Hardjo, poderiam produzir anticorpos policlonais específicos anti-leptospiras, detectáveis em testes ELISA. Foram imunizados oito galinhas com 25 semanas de idade, da raça White Leghorn, sendo três imunizadas com uma suspensão de leptospiras inativadas, três com uma solução de proteínas de membrana externa extraída do sorovar Hardjo e duas controle. Coletas de sangue foram realizadas quinzenalmente e de ovos diariamente. A IgY foi purificada a partir da gema dos ovos utilizando para a delipidação o método de diluição em água ácida e a precipitação com sulfato de amônio. Nos testes ELISA realizados para verificar a especificidade da IgY, foi demonstrada a produção de anticorpos anti-Leptospira, tanto no soro quanto nas gemas purificadas. O pico de produção de anticorpos específicos ocorreu na 5º semana após a primeira imunização. Ficou demonstrada a possibilidade da indução da produção de anticorpos específicos em galinhas imunizadas com leptospiras do sorovar Hardjo inativadas, bem como, com proteínas de membrana externa (PME) extraidas desse sorovar. As galinhas imunizadas com uma suspensão de leptospiras inativadas ou com PME de Leptospira interrogans do sorovar Hardjo produziram anticorpos reativos a PME Hardjo detectáves por teste ELISA.
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Affiliation(s)
| | | | | | | | - Álvaro F. Junior
- Instituto de Estudos Avançados em Veterinária José Caetano Borges, Brasil
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Edupuganti SR, Edupuganti OP, O’Kennedy R, Defrancq E, Boullanger S. Use of T-2 toxin-immobilized amine-activated beads as an efficient affinity purification matrix for the isolation of specific IgY. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 923-924:98-101. [DOI: 10.1016/j.jchromb.2013.02.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 02/06/2013] [Accepted: 02/07/2013] [Indexed: 10/27/2022]
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