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Cloning, Exogenous Expression and Function Analysis of Interferon–γ from Gadus macrocephalus

Interferon γ (IFN–γ) is now considered to be one of the key molecules in the regulation of innate and adaptive immunity. The function of IFN–γ is best described in humans, but less of IFN–γ in fish species has been described at protein level. In the present study, IFN–γ from Gadus macrocephalus (GmI...

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Autores principales: Jiang, Jielan, Gu, Jie, Zhan, Aijun, Mao, Mingguang, Liu, Yumeng, Wang, Haishan, Mao, Yunxiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9610899/
https://www.ncbi.nlm.nih.gov/pubmed/36298859
http://dx.doi.org/10.3390/v14102304
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author Jiang, Jielan
Gu, Jie
Zhan, Aijun
Mao, Mingguang
Liu, Yumeng
Wang, Haishan
Mao, Yunxiang
author_facet Jiang, Jielan
Gu, Jie
Zhan, Aijun
Mao, Mingguang
Liu, Yumeng
Wang, Haishan
Mao, Yunxiang
author_sort Jiang, Jielan
collection PubMed
description Interferon γ (IFN–γ) is now considered to be one of the key molecules in the regulation of innate and adaptive immunity. The function of IFN–γ is best described in humans, but less of IFN–γ in fish species has been described at protein level. In the present study, IFN–γ from Gadus macrocephalus (GmIFN–γ) has been examined in terms of bioinformatics, prokaryotic expression, yeast expression, antiviral activity and immune regulatory function. The cDNA of GmIFN–γ contains an open reading frame of 570 nucleotides, coding 189 amino acids. The mature protein contains a nuclear localization signal motif and an obvious IFN–γ signature sequence at the C-terminal. GmIFN–γ is very similar to that of Atlantic cod, with homology up to 89.89%, but less than 32% to other species. GmIFN–γ can be detected in the gills, spleen, intestine, brain and kidney. Interestingly, during early development, a strong signal of GmIFN–γ was not detected until 40 days post hatching. Prokaryotic expression plasmid pET–32a–GmIFN–γ was constructed, and the expression products in BL21 were confirmed by Mass Spectrometry. Meanwhile, the plasmid pGAPZA–GmIFN–γ with Myc tag was constructed and transmitted into Pichia pastoris yeast GS115, and the products were tested using Western blot. The purified GmIFN–γ from either BL21 or yeast has a strong antivirus (Spring viremia of carp virus) effect. The vector of pcDNA3.1–GmIFN–γ was expressed in EPC cell lines; high transcript levels of MHC class I chain-related protein A (MICA) gene were detected; and the exogenous GmIFN–γ protein could also induce MICA expression, indicating that GmIFN–γ could stimulate immune response. The yeast GS115 with GmIFN–γ protein, which is an inclusion body, was given to zebrafish orally, and the transcript of zebrafish IFN–γ was upregulated significantly; however, genes of the interferon type–I signal pathway were not well stimulated.
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spelling pubmed-96108992022-10-28 Cloning, Exogenous Expression and Function Analysis of Interferon–γ from Gadus macrocephalus Jiang, Jielan Gu, Jie Zhan, Aijun Mao, Mingguang Liu, Yumeng Wang, Haishan Mao, Yunxiang Viruses Article Interferon γ (IFN–γ) is now considered to be one of the key molecules in the regulation of innate and adaptive immunity. The function of IFN–γ is best described in humans, but less of IFN–γ in fish species has been described at protein level. In the present study, IFN–γ from Gadus macrocephalus (GmIFN–γ) has been examined in terms of bioinformatics, prokaryotic expression, yeast expression, antiviral activity and immune regulatory function. The cDNA of GmIFN–γ contains an open reading frame of 570 nucleotides, coding 189 amino acids. The mature protein contains a nuclear localization signal motif and an obvious IFN–γ signature sequence at the C-terminal. GmIFN–γ is very similar to that of Atlantic cod, with homology up to 89.89%, but less than 32% to other species. GmIFN–γ can be detected in the gills, spleen, intestine, brain and kidney. Interestingly, during early development, a strong signal of GmIFN–γ was not detected until 40 days post hatching. Prokaryotic expression plasmid pET–32a–GmIFN–γ was constructed, and the expression products in BL21 were confirmed by Mass Spectrometry. Meanwhile, the plasmid pGAPZA–GmIFN–γ with Myc tag was constructed and transmitted into Pichia pastoris yeast GS115, and the products were tested using Western blot. The purified GmIFN–γ from either BL21 or yeast has a strong antivirus (Spring viremia of carp virus) effect. The vector of pcDNA3.1–GmIFN–γ was expressed in EPC cell lines; high transcript levels of MHC class I chain-related protein A (MICA) gene were detected; and the exogenous GmIFN–γ protein could also induce MICA expression, indicating that GmIFN–γ could stimulate immune response. The yeast GS115 with GmIFN–γ protein, which is an inclusion body, was given to zebrafish orally, and the transcript of zebrafish IFN–γ was upregulated significantly; however, genes of the interferon type–I signal pathway were not well stimulated. MDPI 2022-10-20 /pmc/articles/PMC9610899/ /pubmed/36298859 http://dx.doi.org/10.3390/v14102304 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jiang, Jielan
Gu, Jie
Zhan, Aijun
Mao, Mingguang
Liu, Yumeng
Wang, Haishan
Mao, Yunxiang
Cloning, Exogenous Expression and Function Analysis of Interferon–γ from Gadus macrocephalus
title Cloning, Exogenous Expression and Function Analysis of Interferon–γ from Gadus macrocephalus
title_full Cloning, Exogenous Expression and Function Analysis of Interferon–γ from Gadus macrocephalus
title_fullStr Cloning, Exogenous Expression and Function Analysis of Interferon–γ from Gadus macrocephalus
title_full_unstemmed Cloning, Exogenous Expression and Function Analysis of Interferon–γ from Gadus macrocephalus
title_short Cloning, Exogenous Expression and Function Analysis of Interferon–γ from Gadus macrocephalus
title_sort cloning, exogenous expression and function analysis of interferon–γ from gadus macrocephalus
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9610899/
https://www.ncbi.nlm.nih.gov/pubmed/36298859
http://dx.doi.org/10.3390/v14102304
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