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Yuan J, Zhao Q, Li J, Wen Y, Wu R, Zhao S, Lang YF, Yan QG, Huang X, Du S, Cao SJ. CXCL8 Knockout: A Key to Resisting Pasteurella multocida Toxin-Induced Cytotoxicity. Int J Mol Sci 2024; 25:5330. [PMID: 38791369 PMCID: PMC11121343 DOI: 10.3390/ijms25105330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/05/2024] [Accepted: 05/12/2024] [Indexed: 05/26/2024] Open
Abstract
Pasteurella multocida, a zoonotic pathogen that produces a 146-kDa modular toxin (PMT), causes progressive atrophic rhinitis with severe turbinate bone degradation in pigs. However, its mechanism of cytotoxicity remains unclear. In this study, we expressed PMT, purified it in a prokaryotic expression system, and found that it killed PK15 cells. The host factor CXCL8 was significantly upregulated among the differentially expressed genes in a transcriptome sequencing analysis and qPCR verification. We constructed a CXCL8-knockout cell line with a CRISPR/Cas9 system and found that CXCL8 knockout significantly increased resistance to PMT-induced cell apoptosis. CXCL8 knockout impaired the cleavage efficiency of apoptosis-related proteins, including Caspase3, Caspase8, and PARP1, as demonstrated with Western blot. In conclusion, these findings establish that CXCL8 facilitates PMT-induced PK15 cell death, which involves apoptotic pathways; this observation documents that CXCL8 plays a key role in PMT-induced PK15 cell death.
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Affiliation(s)
- Jianlin Yuan
- Research Center for Swine Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.Y.); (Q.Z.); (J.L.); (Y.W.); (R.W.); (S.Z.); (Y.-F.L.); (Q.-G.Y.); (X.H.)
| | - Qin Zhao
- Research Center for Swine Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.Y.); (Q.Z.); (J.L.); (Y.W.); (R.W.); (S.Z.); (Y.-F.L.); (Q.-G.Y.); (X.H.)
- Sichuan Science-Observation Experimental Station of Veterinary Drugs and Veterinary Diagnostic Technique, Ministry of Agriculture and Rural Affairs, Chengdu 611130, China
- National Demonstration Center for Experimental Animal Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Jinfeng Li
- Research Center for Swine Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.Y.); (Q.Z.); (J.L.); (Y.W.); (R.W.); (S.Z.); (Y.-F.L.); (Q.-G.Y.); (X.H.)
| | - Yiping Wen
- Research Center for Swine Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.Y.); (Q.Z.); (J.L.); (Y.W.); (R.W.); (S.Z.); (Y.-F.L.); (Q.-G.Y.); (X.H.)
- Sichuan Science-Observation Experimental Station of Veterinary Drugs and Veterinary Diagnostic Technique, Ministry of Agriculture and Rural Affairs, Chengdu 611130, China
- National Demonstration Center for Experimental Animal Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Rui Wu
- Research Center for Swine Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.Y.); (Q.Z.); (J.L.); (Y.W.); (R.W.); (S.Z.); (Y.-F.L.); (Q.-G.Y.); (X.H.)
- Sichuan Science-Observation Experimental Station of Veterinary Drugs and Veterinary Diagnostic Technique, Ministry of Agriculture and Rural Affairs, Chengdu 611130, China
- National Demonstration Center for Experimental Animal Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Shan Zhao
- Research Center for Swine Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.Y.); (Q.Z.); (J.L.); (Y.W.); (R.W.); (S.Z.); (Y.-F.L.); (Q.-G.Y.); (X.H.)
- Sichuan Science-Observation Experimental Station of Veterinary Drugs and Veterinary Diagnostic Technique, Ministry of Agriculture and Rural Affairs, Chengdu 611130, China
- National Demonstration Center for Experimental Animal Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Yi-Fei Lang
- Research Center for Swine Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.Y.); (Q.Z.); (J.L.); (Y.W.); (R.W.); (S.Z.); (Y.-F.L.); (Q.-G.Y.); (X.H.)
- Sichuan Science-Observation Experimental Station of Veterinary Drugs and Veterinary Diagnostic Technique, Ministry of Agriculture and Rural Affairs, Chengdu 611130, China
- National Demonstration Center for Experimental Animal Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Qi-Gui Yan
- Research Center for Swine Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.Y.); (Q.Z.); (J.L.); (Y.W.); (R.W.); (S.Z.); (Y.-F.L.); (Q.-G.Y.); (X.H.)
- Sichuan Science-Observation Experimental Station of Veterinary Drugs and Veterinary Diagnostic Technique, Ministry of Agriculture and Rural Affairs, Chengdu 611130, China
- National Demonstration Center for Experimental Animal Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaobo Huang
- Research Center for Swine Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.Y.); (Q.Z.); (J.L.); (Y.W.); (R.W.); (S.Z.); (Y.-F.L.); (Q.-G.Y.); (X.H.)
- Sichuan Science-Observation Experimental Station of Veterinary Drugs and Veterinary Diagnostic Technique, Ministry of Agriculture and Rural Affairs, Chengdu 611130, China
- National Demonstration Center for Experimental Animal Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Senyan Du
- Research Center for Swine Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.Y.); (Q.Z.); (J.L.); (Y.W.); (R.W.); (S.Z.); (Y.-F.L.); (Q.-G.Y.); (X.H.)
- Sichuan Science-Observation Experimental Station of Veterinary Drugs and Veterinary Diagnostic Technique, Ministry of Agriculture and Rural Affairs, Chengdu 611130, China
- National Demonstration Center for Experimental Animal Education, Sichuan Agricultural University, Chengdu 611130, China
| | - San-Jie Cao
- Research Center for Swine Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.Y.); (Q.Z.); (J.L.); (Y.W.); (R.W.); (S.Z.); (Y.-F.L.); (Q.-G.Y.); (X.H.)
- Sichuan Science-Observation Experimental Station of Veterinary Drugs and Veterinary Diagnostic Technique, Ministry of Agriculture and Rural Affairs, Chengdu 611130, China
- National Demonstration Center for Experimental Animal Education, Sichuan Agricultural University, Chengdu 611130, China
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Giuriato D, Catucci G, Correddu D, Nardo GD, Gilardi G. CYP116B5-SOX: An artificial peroxygenase for drug metabolites production and bioremediation. Biotechnol J 2024; 19:e2300664. [PMID: 38719620 DOI: 10.1002/biot.202300664] [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: 11/28/2023] [Revised: 04/02/2024] [Accepted: 04/05/2024] [Indexed: 06/06/2024]
Abstract
CYP116B5 is a class VII P450 in which the heme domain is linked to a FMN and 2Fe2S-binding reductase. Our laboratory has proved that the CYP116B5 heme domain (CYP116B5-hd) is capable of catalyzing the oxidation of substrates using H2O2. Recently, the Molecular Lego approach was applied to join the heme domain of CYP116B5 to sarcosine oxidase (SOX), which provides H2O2 in-situ by the sarcosine oxidation. In this work, the chimeric self-sufficient fusion enzyme CYP116B5-SOX was heterologously expressed, purified, and characterized for its functionality by absorbance and fluorescence spectroscopy. Differential scanning calorimetry (DSC) experiments revealed a TM of 48.4 ± 0.04 and 58.3 ± 0.02°C and a enthalpy value of 175,500 ± 1850 and 120,500 ± 1350 cal mol-1 for the CYP116B5 and SOX domains respectively. The fusion enzyme showed an outstanding chemical stability in presence of up to 200 mM sarcosine or 5 mM H2O2 (4.4 ± 0.8 and 11.0 ± 2.6% heme leakage respectively). Thanks to the in-situ H2O2 generation, an improved kcat/KM for the p-nitrophenol conversion was observed (kcat of 20.1 ± 0.6 min-1 and KM of 0.23 ± 0.03 mM), corresponding to 4 times the kcat/KM of the CYP116B5-hd. The aim of this work is the development of an engineered biocatalyst to be exploited in bioremediation. In order to tackle this challenge, an E. coli strain expressing CYP116B5-SOX was employed to exploit this biocatalyst for the oxidation of the wastewater contaminating-drug tamoxifen. Data show a 12-fold increase in tamoxifen N-oxide production-herein detected for the first time as CYP116B5 metabolite-compared to the direct H2O2 supply, equal to the 25% of the total drug conversion.
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Affiliation(s)
- Daniele Giuriato
- Department of Life Sciences and Systems Biology, University of Torino, Torino, Italy
| | - Gianluca Catucci
- Department of Life Sciences and Systems Biology, University of Torino, Torino, Italy
| | - Danilo Correddu
- Department of Life Sciences and Systems Biology, University of Torino, Torino, Italy
| | - Giovanna Di Nardo
- Department of Life Sciences and Systems Biology, University of Torino, Torino, Italy
| | - Gianfranco Gilardi
- Department of Life Sciences and Systems Biology, University of Torino, Torino, Italy
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Schaffrath R, Brinkmann U. Diphthamide - a conserved modification of eEF2 with clinical relevance. Trends Mol Med 2024; 30:164-177. [PMID: 38097404 DOI: 10.1016/j.molmed.2023.11.008] [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: 09/28/2023] [Revised: 11/03/2023] [Accepted: 11/09/2023] [Indexed: 02/17/2024]
Abstract
Diphthamide, a complex modification on eukaryotic translation elongation factor 2 (eEF2), assures reading-frame fidelity during translation. Diphthamide and enzymes for its synthesis are conserved in eukaryotes and archaea. Originally identified as target for diphtheria toxin (DT) in humans, its clinical relevance now proves to be broader than the link to pathogenic bacteria. Diphthamide synthesis enzymes (DPH1 and DPH3) are associated with cancer, and DPH gene mutations can cause diphthamide deficiency syndrome (DDS). Finally, new analyses provide evidence that diphthamide may restrict propagation of viruses including SARS-CoV-2 and HIV-1, and that DPH enzymes are targeted by viruses for degradation to overcome this restriction. This review describes how diphthamide is synthesized and functions in translation, and covers its clinical relevance in human development, cancer, and infectious diseases.
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Affiliation(s)
- Raffael Schaffrath
- Institut für Biologie, Fachgebiet Mikrobiologie, Universität Kassel, Kassel, Germany.
| | - Ulrich Brinkmann
- Roche Pharma Research and Early Development (pRED), Large Molecule Research, Roche Innovation Center Munich, Penzberg, Germany.
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Woolley SA, Salavati M, Clark EL. Recent advances in the genomic resources for sheep. Mamm Genome 2023; 34:545-558. [PMID: 37752302 PMCID: PMC10627984 DOI: 10.1007/s00335-023-10018-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 08/30/2023] [Indexed: 09/28/2023]
Abstract
Sheep (Ovis aries) provide a vital source of protein and fibre to human populations. In coming decades, as the pressures associated with rapidly changing climates increase, breeding sheep sustainably as well as producing enough protein to feed a growing human population will pose a considerable challenge for sheep production across the globe. High quality reference genomes and other genomic resources can help to meet these challenges by: (1) informing breeding programmes by adding a priori information about the genome, (2) providing tools such as pangenomes for characterising and conserving global genetic diversity, and (3) improving our understanding of fundamental biology using the power of genomic information to link cell, tissue and whole animal scale knowledge. In this review we describe recent advances in the genomic resources available for sheep, discuss how these might help to meet future challenges for sheep production, and provide some insight into what the future might hold.
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Affiliation(s)
- Shernae A Woolley
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - Mazdak Salavati
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
- Scotland's Rural College, Parkgate, Barony Campus, Dumfries, DG1 3NE, UK
| | - Emily L Clark
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK.
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Kapusi E, Cong L, Stoger E. Editorial: CRISPR and alternative approaches. Biotechnol J 2022; 17:e2200290. [PMID: 35726663 DOI: 10.1002/biot.202200290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 06/04/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Eszter Kapusi
- Department of Applied Genetics and Cell Biology (DAGZ), Institute of Plant Biotechnology and Cell Biology (IPBT), University of Natural Resources and Life Sciences, Vienna, Austria
| | - Le Cong
- Department of Pathology, Department of Genetics, Wu Tsai Neuroscience Institute, Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California, USA
| | - Eva Stoger
- Department of Pathology, Department of Genetics, Wu Tsai Neuroscience Institute, Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California, USA
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Ruan J, Zhang X, Zhao S, Xie S. Advances in CRISPR-Based Functional Genomics and Nucleic Acid Detection in Pigs. Front Genet 2022; 13:891098. [PMID: 35711930 PMCID: PMC9195075 DOI: 10.3389/fgene.2022.891098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Jinxue Ruan
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education & Key Lab of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, China
| | - Xuying Zhang
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Shuhong Zhao
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education & Key Lab of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, China.,Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China
| | - Shengsong Xie
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education & Key Lab of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, China
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A Nectin1 Mutant Mouse Model Is Resistant to Pseudorabies Virus Infection. Viruses 2022; 14:v14050874. [PMID: 35632616 PMCID: PMC9144750 DOI: 10.3390/v14050874] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/20/2022] [Accepted: 04/20/2022] [Indexed: 02/01/2023] Open
Abstract
The present study generated nectin1-mutant mice with single amino acid substitution and tested the anti-pseudorabies virus (PRV) ability of the mutant mice, with the aim to establish a model for PRV-resistant livestock. A phenylalanine to alanine transition at position 129 (F129A) of nectin1 was introduced into the mouse genome to generate nectin1 (F129A) mutant mice. The mutant mice were infected with a field-isolated highly virulent PRV strain by subcutaneous injection of virus. We found that the homozygous mutant mice had significantly alleviated disease manifestations and decreased death rate and viral loading in serum and tissue compared with heterozygous mutant and wild-type mice. In addition to disease resistance, the homozygous mutant mice showed a defect in eye development, indicating the side effect on animals by only one amino acid substitution in nectin1. Results demonstrate that gene modification in nectin1 is an effective approach to confer PRV resistance on animals, but the mutagenesis pattern requires further investigation to increase viral resistance without negative effect on animal development.
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