1
|
Carriero MM, Henrique-Silva F, Meira CM, Gato IMQ, Caetano AR, Lobo FP, Alves AL, Varela ES, Maia AAM. Molecular characterization and gene expression analysis of the pro-inflammatory cytokines IL-1β and IL-8 in the South American fish Piaractus mesopotamicus challenged with Aeromonas dhakensis. Genet Mol Biol 2020; 43:e20200006. [PMID: 33174977 PMCID: PMC7687281 DOI: 10.1590/1678-4685-gmb-2020-0006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 08/06/2020] [Indexed: 11/24/2022] Open
Abstract
In the present study, the complete characterization of cDNA and genomic sequences of IL-1β and IL-8, as well as the expression profile of these genes in the South American fish pacu (Piaractus mesopotamicus) is provided. The full-length pmIL-1β cDNA was composed of 1208 nucleotides that would produce a precursor peptide with 273 amino acid residues. A putative caspase-1 cleavage site, similar to what is found in mammalian IL-1β, was identified producing a mature peptide with a theoretical molecular weight of 17.21 kDa. The pmIL-8 cDNA sequence consisted of 1019 nucleotides which encoded a 95-amino acid protein with a theoretical molecular weight of 10.43 kDa that showed all typical CXC chemokine features, including a 20-residue signal peptide and four conserved cysteine residues. Constitutive mRNA expression was detected for both genes in the liver, head kidney, gill, intestine, skin and spleen. After a bacterial challenge, up-regulation was detected for both pmIL-1β and pmIL-8 in the spleen and head kidney at 12 h post-infection. At 24 h post-infection there was a decrease in the expression of both genes, with pmIL-8 showing a significant down-regulation in the liver and head kidney when compared to the control groups.
Collapse
Affiliation(s)
- Mateus Maldonado Carriero
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Pirassununga, SP, Brazil
| | - Flavio Henrique-Silva
- Universidade Federal de São Carlos, Departamento de Genética e Evolução, São Carlos, SP, Brazil
| | - Caroline Munhoz Meira
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Pirassununga, SP, Brazil
| | - Igor Mateus Queiroz Gato
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Pirassununga, SP, Brazil
| | - Alexandre Rodrigues Caetano
- Embrapa Recursos Genéticos e Biotecnologia, Empresa Brasileira de Pesquisa Agropecuária, Brasília, DF, Brazil
| | - Francisco Pereira Lobo
- Embrapa Informática na Agricultura, Empresa Brasileira de Pesquisa Agropecuária, Campinas, SP, Brazil
| | - Anderson Luis Alves
- Embrapa Pesca e Aquicultura, Empresa Brasileira de Pesquisa Agropecuária, Palmas, TO, Brazil
| | - Eduardo Sousa Varela
- Embrapa Pesca e Aquicultura, Empresa Brasileira de Pesquisa Agropecuária, Palmas, TO, Brazil
| | - Antonio Augusto Mendes Maia
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Pirassununga, SP, Brazil
| |
Collapse
|
2
|
Vaz Farias TH, Arijo S, Medina A, Pala G, da Rosa Prado EJ, Montassier HJ, Pilarski F, Antonio de Andrade Belo M. Immune responses induced by inactivated vaccine against Aeromonas hydrophila in pacu, Piaractus mesopotamicus. FISH & SHELLFISH IMMUNOLOGY 2020; 101:186-191. [PMID: 32247044 DOI: 10.1016/j.fsi.2020.03.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 03/20/2020] [Accepted: 03/25/2020] [Indexed: 06/11/2023]
Abstract
Aeromonas hydrophila is responsible for outbreaks of a severe infectious disease in fish farms around the world and is one of the major causes of economic losses to the neotropical fish farmers. This study assessed the induction of immune responses and protection against A. hydrophila in pacu, Piaractus mesopotamicus, vaccinated through intraperitoneal and immersion route with inactivated virulent strain. Fish were randomly distributed in three vaccinated groups: intraperitoneal (i.p.) route; immersion; and immersion + booster; and control group (unvaccinated). All vaccination protocols used the concentration of 1.7 × 108 CFU mL-1 of inactivated A. hydrophila., and an oil adjuvant was used for vaccine prepararion for i.p. route vaccination. Blood and skin mucus from 9 fishes per treatment were collected at 14, 28, 42 and 84 days post-vaccination (DPV) for determination of lysozyme concentration in skin mucus, as well as antibodies anti-A. hydrophila in blood serum and skin mucus. Fish were challenged at 84 DPV with homologous and virulent strain of A. hydrophila for evaluation of resistance against bacterial infection. The results demonstrated that vaccination with inactivated A. hydrophila suspension by i.p. or immersion resulted in significant increase of skin mucus lysozyme and specific antibody levels in serum and skin mucus, at 28 and 42 DPV, and this increase in innate and adaptive immunity remained significant in pacu vaccinated through i.p. route up to 84 DPV. Although no significant differences were observed in the survival study, pacu vaccinated through i.p. route presented 31,33% of relative percentage survival (RPS) in LD50-96h when compared unvaccinated fish challenged at 84 DPV. The results observed in this study indicate that vaccination programs with inactivated A. hydrophila, including booster doses by i.p. or immersion routes, could result in more effective protection in pacu against this bacteriosis, by increasing innate and adaptive mucosal and systemic immune responses.
Collapse
Affiliation(s)
- Thais Heloisa Vaz Farias
- Laboratory of Aquatic Organisms Pathology (Lapoa), Aquaculture Center from UNESP (CAUNESP), Rodovia de Acesso Paulo Donato Castellane s/n, CEP 14884-900, Jaboticabal, SP, Brazil
| | - Salvador Arijo
- Department of Microbiology, Faculty of Sciences, University of Malaga, 29071, Malaga, Spain
| | - Alberto Medina
- Department of Microbiology, Faculty of Sciences, University of Malaga, 29071, Malaga, Spain
| | - Gabriela Pala
- Department of Preventive Veterinary Medicine, São Paulo State University (Unesp), Rodovia de Acesso Paulo Donato Castellane s/n, Zona Rural, CEP 14884-012, Jaboticabal, SP, Brazil
| | - Ed Jhonny da Rosa Prado
- Department of Preventive Veterinary Medicine, São Paulo State University (Unesp), Rodovia de Acesso Paulo Donato Castellane s/n, Zona Rural, CEP 14884-012, Jaboticabal, SP, Brazil
| | - Hélio José Montassier
- Department of Microbiology, São Paulo State University (Unesp), Rodovia de Acesso Paulo Donato Castellane s/n, Zona Rural, CEP 14884-012, Jaboticabal, SP, Brazil
| | - Fabiana Pilarski
- Laboratory of Aquatic Organisms Pathology (Lapoa), Aquaculture Center from UNESP (CAUNESP), Rodovia de Acesso Paulo Donato Castellane s/n, CEP 14884-900, Jaboticabal, SP, Brazil
| | - Marco Antonio de Andrade Belo
- Department of Preventive Veterinary Medicine, São Paulo State University (Unesp), Rodovia de Acesso Paulo Donato Castellane s/n, Zona Rural, CEP 14884-012, Jaboticabal, SP, Brazil; Laboratory of Animal Pharmacology and Toxicology, Brazil University, Av. Hilário da Silva Passos, 950, CEP.13690-000, Descalvado, SP, Brazil.
| |
Collapse
|