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Song H, Liu X, Gao X, Li J, Shang Y, Gao W, Li Y, Zhang Z. Transcriptome analysis of pre-immune state induced by interferon gamma inhibiting the replication of H 9N 2 avian influenza viruses in chicken embryo fibroblasts. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2022; 103:105332. [PMID: 35811034 DOI: 10.1016/j.meegid.2022.105332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 06/24/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
Interferon (IFN), a critical antiviral cytokine produced by pathogens-induced cells, plays an important role in host innate immune system. In this study, to investigate the inhibition effect of IFN on avian influenza virus (AIV), Chicken Embryo Fibroblasts (CEFs) was infected by H9N2 AIV. The pre-immune state and transcriptome analysis have been observed and performed. The result showed chicken interferon gamma (chIFN-γ) have the most inhibitory effect on H9N2 virus among three types of chicken interferons (chIFNs). Inhibition of chIFN-γ on H9N2 virus was verified by indirect immunofluorescence, RT-qPCR and western blot. The possible signaling pathways induced by chIFN-γ with or without virus were analyzed by transcriptome. The transcriptome data were compared among H9N2-infected, chIFN-γ-treated, chIFN-γ + H9N2-treated, and Control groups. In summary, RNA-sequencing (RNA-seq) data suggested that H9N2 virus infection resulted in corresponding response of certain defensive, inflammatory and metabolism pathways to the virus replication in CEFs. Furthermore, while CEFs were treated with chIFN-γ, many immune-related signaling pathways in cells are affected and altered. Antiviral genes involved in these immune pathways such as interferon regulatory factors, chemokines, interferon-stimulated genes (ISGs) and transcription factors were significantly up-regulated, and showed significant antiviral responses. Compared with virus infected CEFs alone, pretreatment with IFN induced the expression of antiviral genes and activated related antiviral pathways, inhibited the viral replication as result. Our study provided functional annotations for antiviral genes and the basis for studying the mechanism of chIFN-γ mediated response against H9N2 AIV.
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Affiliation(s)
- Haozhi Song
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xingjian Liu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xintao Gao
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jialei Li
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yuting Shang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Weisong Gao
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yinü Li
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Zhifang Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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Dai M, Xu C, Chen W, Liao M. Progress on chicken T cell immunity to viruses. Cell Mol Life Sci 2019; 76:2779-2788. [PMID: 31101935 PMCID: PMC11105491 DOI: 10.1007/s00018-019-03117-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 04/14/2019] [Accepted: 04/24/2019] [Indexed: 12/20/2022]
Abstract
Avian virus infection remains one of the most important threats to the poultry industry. Pathogens such as avian influenza virus (AIV), avian infectious bronchitis virus (IBV), and infectious bursal disease virus (IBDV) are normally controlled by antibodies specific for surface proteins and cellular immune responses. However, standard vaccines aimed at inducing neutralizing antibodies must be administered annually and can be rendered ineffective because immune-selective pressure results in the continuous mutation of viral surface proteins of different strains circulating from year to year. Chicken T cells have been shown to play a crucial role in fighting virus infection, offering lasting and cross-strain protection, and offer the potential for developing universal vaccines. This review provides an overview of our current knowledge of chicken T cell immunity to viruses. More importantly, we point out the limitations and barriers of current research and a potential direction for future studies.
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Affiliation(s)
- Manman Dai
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou, People's Republic of China
| | - Chenggang Xu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou, People's Republic of China
- Key Laboratory of Veterinary Vaccine Innovation of the Ministry of Agriculture, Guangzhou, People's Republic of China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, People's Republic of China
| | - Weisan Chen
- T Cell Lab, Department of Biochemistry and Genetics, La Trobe Institute of Molecular Science, La Trobe University, Bundoora, Australia.
| | - Ming Liao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China.
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou, People's Republic of China.
- Key Laboratory of Veterinary Vaccine Innovation of the Ministry of Agriculture, Guangzhou, People's Republic of China.
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, People's Republic of China.
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Xiao J, Zhang L, Wang Z, Xiang W, Lu P, Zhao Y, Han M, Ma A, Qi P, Wang M, Gao GF, Liu WJ. Conserved peptides enhance immune efficiency of inactive vaccines against emerging avian influenza viruses in chicken. SCIENCE CHINA-LIFE SCIENCES 2017; 60:1340-1347. [DOI: 10.1007/s11427-017-9153-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 06/06/2017] [Indexed: 11/30/2022]
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Zhao H, Tang J, Cao L, Jia G, Long D, Liu G, Chen X, Cai J, Shang H. Characterization of bioactive recombinant antimicrobial peptide parasin I fused with human lysozyme expressed in the yeast Pichia pastoris system. Enzyme Microb Technol 2015; 77:61-7. [PMID: 26138401 DOI: 10.1016/j.enzmictec.2015.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 05/31/2015] [Accepted: 06/01/2015] [Indexed: 11/16/2022]
Abstract
Parasin I (PI) is a 19 amino acid peptide with potent antimicrobial activities against a broad spectrum of microorganisms and is a good candidate for development as a novel antimicrobial agent. The objective of this study was to express and characterize a codon optimized parasin I peptide fused with human lysozyme (hLY). A 513 bp cDNA fragment encoding the mature hLY protein and parasin I peptide was designed and synthesized according to the codon bias of Pichia pastoris. A 4×Gly flexible amino acid linker with an enterokinase cleavage (DDDDK) was designed to link the PI to the C-terminal of hLY. The codon optimized recombinant hLY-PI was cloned into the pPICZαA vector and expressed in P. pastoris. The over-expressed extracellular rehLY-PI was purified using Ni sepharose affinity column and exhibited a molecular mass of approximately 18 kDa. After digested with enterokinase the rehLY-PI protein release its corresponding rehLY and rePI, with molecular mass of 16 kDa and 2 kDa, respectively, on Tricine-SDS-PAGE. The released rehLY exhibited similar lytical activity against Micrococcus lysodeikticus to its commercial hLY. The digested rehLY-PI product exhibited antimicrobial activities against Bacillus subtilis, Staphylococcus aureus and Escherichia coli, and synergism has been found between the released rePI and rehLY. In conclusion, we successfully optimized a rehLY-PI fusion protein encoding gene and over-expressed the rehLY-PI in P. pastoris. The recombination protein digested with enterokinase released functional hLY and antimicrobial parasin I, which demonstrates a potential for future use as an animal feed additive to partly replace antibiotic.
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Affiliation(s)
- Hua Zhao
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
| | - Jiayong Tang
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Lei Cao
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Gang Jia
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Dingbiao Long
- Chongqing Academy of Animal Science, Chongqing, 402460, China
| | - Guangmang Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Xiaoling Chen
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Jingyi Cai
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Haiying Shang
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
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Wen D, Foley SF, Hronowski XL, Gu S, Meier W. Discovery and Investigation of O-Xylosylation in Engineered Proteins Containing a (GGGGS)n Linker. Anal Chem 2013; 85:4805-12. [DOI: 10.1021/ac400596g] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Dingyi Wen
- Analytical Biochemistry, Department
of Biologics Drug
Discovery, Biogen Idec, 12 Cambridge Center,
Cambridge, Massachusetts 02142, United States
| | - Susan F. Foley
- Analytical Biochemistry, Department
of Biologics Drug
Discovery, Biogen Idec, 12 Cambridge Center,
Cambridge, Massachusetts 02142, United States
| | - Xiaoping L. Hronowski
- Analytical Biochemistry, Department
of Biologics Drug
Discovery, Biogen Idec, 12 Cambridge Center,
Cambridge, Massachusetts 02142, United States
| | - Sheng Gu
- Analytical Biochemistry, Department
of Biologics Drug
Discovery, Biogen Idec, 12 Cambridge Center,
Cambridge, Massachusetts 02142, United States
| | - Werner Meier
- Analytical Biochemistry, Department
of Biologics Drug
Discovery, Biogen Idec, 12 Cambridge Center,
Cambridge, Massachusetts 02142, United States
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Expression of a novel dual-functional protein--the antimicrobial peptide LL-37 fused with human acidic fibroblast growth factor in Escherichia coli. Protein Expr Purif 2011; 81:119-125. [PMID: 21963769 DOI: 10.1016/j.pep.2011.09.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2011] [Revised: 09/14/2011] [Accepted: 09/16/2011] [Indexed: 01/14/2023]
Abstract
Human acidic fibroblast growth factor (haFGF) stimulates repair of delayed healing which still remains a tremendously world-wide issue. However, most of the patients with delayed healings have to face another creeping problem - microbial infection, which is one of the most frequent complications that still lead to wound healing failure. LL-37/hCAP-18 is the only cathelicidin-derived antimicrobial peptide found in human with a wide range of antimicrobial activities. In the present study, a novel hybrid protein combining LL-37 with haFGF was designed. The DNA sequence encoding recombination fusion protein LL-37-haFGF was subcloned into the pET-21b vector for protein expression in Escherichia coli strain BL21 (DE3). The recombinant protein was expressed as a His-tagged protein and purified using a combination of Ni affinity and CM-Sepharose chromatography at a purity of 95.43% as detected by RP-HPLC and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Antimicrobial activity assays showed that the purified LL-37-haFGF had improved antimicrobial activities in vitro compared with LL-37. Methylthiazoletetrazolium (MTT) assay showed that the purified LL-37-haFGF also had a distinct mitogenic activity in NIH 3T3 cells. These data suggests the recombinant protein LL-37-haFGF has pharmaceutical potential for applications in wound healing.
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Chen W, Jia Z, Zhang T, Zhang N, Lin C, Gao F, Wang L, Li X, Jiang Y, Li X, Gao GF, Xia C. MHC Class I Presentation and Regulation by IFN in Bony Fish Determined by Molecular Analysis of the Class I Locus in Grass Carp. THE JOURNAL OF IMMUNOLOGY 2010; 185:2209-21. [DOI: 10.4049/jimmunol.1000347] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Expression of the antimicrobial peptide cecropin fused with human lysozyme in Escherichia coli. Appl Microbiol Biotechnol 2010; 87:2169-76. [PMID: 20499232 DOI: 10.1007/s00253-010-2606-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2010] [Revised: 04/02/2010] [Accepted: 04/05/2010] [Indexed: 10/19/2022]
Abstract
Lysozyme is an abundant, cationic antimicrobial protein that plays an important role in host defense. It targets the beta (1-4) glycosidic bond between N-acetylglucosamine and N-acetylmuramic residues that make up peptidoglycan, making lysozyme highly active against Gram-positive bacteria. However, lysozyme alone is inactive against Gram-negative bacteria because it cannot reach the peptidoglycan layer. Cecropins are cationic molecules with a wide range of antimicrobial activities. The main target for these peptides is the cytoplasmic membrane. We resume that cecopin may disrupt the outer membrane, giving the enzyme access to the peptidoglycan in cell wall. So in the present study, novel hybrid protein combining Musca domestica cecropin (Mdc) with human lysozyme (Hly) was designed. The DNA sequence encoding recombination fusion protein Mdc-hly was cloned into the pET-32a vector for protein expression in Escherichia coli strain BL21 (DE3). The protein was expressed as a His-tagged fusion protein, and the Mdc-hly was released from the fusion by enterokinase cleavage and separated from the carrier thioredoxin. Antimicrobial activity assays showed that the recombinant fusion protein Mdc-hly has improved in vitro antimicrobial activity and action spectrum compared to Mdc and hly. Mdc-hly may have important potential application as a future safely administered human drug and food additive.
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