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Fratto A, Torricelli M, Sebastiani C, Ciullo M, Felici A, Biagetti M. Survey on resistance occurrence for F4 + and F18 + enterotoxigenic Escherichia coli (ETEC) among pigs reared in Central Italy regions. Vet Res Commun 2024; 48:1279-1284. [PMID: 38175328 DOI: 10.1007/s11259-023-10287-8] [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: 09/18/2023] [Accepted: 12/21/2023] [Indexed: 01/05/2024]
Abstract
Porcine Post Weaning Diarrhoea (PWD) is one of the most important swine disease worldwide, caused by Enterotoxigenic Escherichia coli (ETEC) strains able to provoke management, welfare and sanitary issues. ETEC is determined by proteinaceous surface appendages. Numerous studies conducted by now in pigs have demonstrated, at the enterocytes level, that, the genes mucin 4 (MUC4) and fucosyltransferase (FUT1), coding for ETEC F4 and F18 receptors respectively, can be carriers of single nucleotide polymorphisms (SNPs) associated with natural resistance/susceptibility to PWD. The latter aspect was investigated in this study, evaluating the SNPs of the MUC4 and FUT1 genes in slaughtered pigs reared for the most in Central Italy. Genomic DNA was extracted from 362 swine diaphragmatic samples and then was subjected to the detection of known polymorphisms on MUC4 and FUT1candidate target genes by PCR-RFLP. Some of the identified SNPs were confirmed by sequencing analysis. Animals carrying the SNPs associated with resistance were 11% and 86% for the FUT1 and MUC4 genes respectively. Therefore, it can be assumed that the investigated animals may be an important resource and reservoir of favorable genetic traits for the breeding of pigs resistant to enterotoxigenic E.coli F4 variant.
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Affiliation(s)
- Anna Fratto
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche - Togo Rosati, Via G. Salvemini 1, Perugia, 06126, Italy
| | - Martina Torricelli
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche - Togo Rosati, Via G. Salvemini 1, Perugia, 06126, Italy.
| | - Carla Sebastiani
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche - Togo Rosati, Via G. Salvemini 1, Perugia, 06126, Italy
| | - Marcella Ciullo
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche - Togo Rosati, Via G. Salvemini 1, Perugia, 06126, Italy
| | - Andrea Felici
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche - Togo Rosati, Via G. Salvemini 1, Perugia, 06126, Italy
| | - Massimo Biagetti
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche - Togo Rosati, Via G. Salvemini 1, Perugia, 06126, Italy
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Xiang P, Yeung YT, Wang J, Wu Q, Du R, Huang C, Jia X, Gao Y, Zhi Y, Guo F, Wei H, Zhang D, Liu Y, Liu L, Liang L, Wang J, Song Y, Liu K, Fang B. miR-17-3p promotes the proliferation of multiple myeloma cells by downregulating P21 expression through LMLN inhibition. Int J Cancer 2021; 148:3071-3085. [PMID: 33609405 PMCID: PMC8248421 DOI: 10.1002/ijc.33528] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 01/31/2021] [Accepted: 02/11/2021] [Indexed: 01/01/2023]
Abstract
Multiple myeloma (MM), a hematological malignancy, has a poor prognosis and requires an invasive procedure. Reports have implicated miRNAs in the diagnosis, treatment and prognosis of hematological malignancies. In our study, we evaluated the expression profiles of miR-17-3p in plasma and bone marrow mononuclear cells of monoclonal gammopathy of undetermined significance (MGUS) and MM patients and healthy subjects. The results showed that the plasma and mononuclear cell expression levels of miR-17-3p in MM patients were higher than those in MGUS patients and normal controls. In addition, the expression of miR-17-3p was positively correlated with diagnostic indexes, such as marrow plasma cell abundance and serum M protein level, and positively correlated with the International Staging System stage of the disease. Receiver operating characteristic curve analysis suggested that miR-17-3p might be a diagnostic index of MM. Moreover, miR-17-3p regulated cell proliferation, apoptosis and the cell cycle through P21 in MM cell lines and promoted MM tumor growth in vivo. Furthermore, we predicted and verified LMLN as a functional downstream target gene of miR-17-3p. Negatively regulated by miR-17-3p, LMLN inhibits MM cell growth, exerting a tumor suppressive function through P21. Taken together, our data identify miR-17-3p as a promising diagnostic biomarker for MM in the clinic and unveil a new miR-17-3p-LMLN-P21 axis in MM progression.
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Affiliation(s)
- Pu Xiang
- Department of HematologyAffiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Henan Hematology InstituteZhengzhouHenanChina
| | - Yiu To Yeung
- China‐US (Henan) Hormel Cancer InstituteZhengzhouHenanChina
| | - Jiheng Wang
- Department of Head and Neck ThyroidAffiliated Cancer Hospital of Zhengzhou University and Henan Cancer HospitalZhengzhouHenanChina
| | - Qiong Wu
- China‐US (Henan) Hormel Cancer InstituteZhengzhouHenanChina
- Department of Pathophysiology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouHenanChina
| | - Ruijuan Du
- China‐US (Henan) Hormel Cancer InstituteZhengzhouHenanChina
- Department of Pathophysiology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouHenanChina
| | - Chuntian Huang
- China‐US (Henan) Hormel Cancer InstituteZhengzhouHenanChina
- Department of Pathophysiology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouHenanChina
| | - Xuechao Jia
- China‐US (Henan) Hormel Cancer InstituteZhengzhouHenanChina
- Department of Pathophysiology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouHenanChina
| | - Yunfeng Gao
- China‐US (Henan) Hormel Cancer InstituteZhengzhouHenanChina
| | - Yafei Zhi
- China‐US (Henan) Hormel Cancer InstituteZhengzhouHenanChina
- Department of Pathophysiology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouHenanChina
| | - Fangqin Guo
- Department of Pathophysiology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouHenanChina
| | - Huifang Wei
- China‐US (Henan) Hormel Cancer InstituteZhengzhouHenanChina
- Department of Pathophysiology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouHenanChina
| | - Dandan Zhang
- China‐US (Henan) Hormel Cancer InstituteZhengzhouHenanChina
| | - Yuzhang Liu
- Department of HematologyAffiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Henan Hematology InstituteZhengzhouHenanChina
| | - Lina Liu
- Department of HematologyAffiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Henan Hematology InstituteZhengzhouHenanChina
| | - Lijie Liang
- Department of HematologyAffiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Henan Hematology InstituteZhengzhouHenanChina
| | - Juan Wang
- Department of HematologyAffiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Henan Hematology InstituteZhengzhouHenanChina
| | - Yongping Song
- Department of HematologyAffiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Henan Hematology InstituteZhengzhouHenanChina
| | - Kangdong Liu
- China‐US (Henan) Hormel Cancer InstituteZhengzhouHenanChina
- Department of Pathophysiology, School of Basic Medical SciencesZhengzhou UniversityZhengzhouHenanChina
- Cancer Chemoprevention International Collaboration LaboratoryZhengzhouHenanChina
| | - Baijun Fang
- Department of HematologyAffiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Henan Hematology InstituteZhengzhouHenanChina
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Ou B, Jiang B, Jin D, Yang Y, Zhang M, Zhang D, Zhao H, Xu M, Song H, Wu W, Chen M, Lu T, Huang J, Seo H, Garcia C, Zheng W, Guo W, Lu Y, Jiang Y, Yang S, Kaushik RS, Li X, Zhang W, Zhu G. Engineered Recombinant Escherichia coli Probiotic Strains Integrated with F4 and F18 Fimbriae Cluster Genes in the Chromosome and Their Assessment of Immunogenic Efficacy in Vivo. ACS Synth Biol 2020; 9:412-426. [PMID: 31944664 DOI: 10.1021/acssynbio.9b00430] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
F4 (K88) and F18 fimbriaed enterotoxigenic Escherichia coli (ETEC) are the predominant causes of porcine postweaning diarrhea (PWD), and vaccines are considered the most effective preventive approach against PWD. Since heterologous DNA integrated into bacterial chromosomes could be effectively expressed with stable inheritance, we chose probiotic EcNc (E. coli Nissle 1917 prototype cured of cryptic plasmids) as a delivery vector to express the heterologous F4 or both F4 and F18 fimbriae and sequentially assessed their immune efficacy of anti-F4 and F18 fimbriae in both murine and piglet models. Employing the CRISPR-cas9 technology, yjcS, pcadA, lacZ, yieN/trkD, maeB, and nth/tppB sites in the chromosome of an EcNc strain were targeted as integration sites to integrate F4 or F18 fimbriae cluster genes under the Ptet promotor to construct two recombinant integration probiotic strains (RIPSs), i.e., nth integration strain (EcNcΔnth/tppB::PtetF4) and multiple integration strain (EcNc::PtetF18x4::PtetF4x2). Expression of F4, both F4 and F18 fimbriae on the surfaces of two RIPSs, was verified with combined methods of agglutination assay, Western blot, and immunofluorescence microscopy. The recombinant strains have improved adherence to porcine intestinal epithelial cell lines. Mice and piglets immunized with the nth integration strain and multiple integration strain through gavage developed anti-F4 and both anti-F4 and anti-F18 IgG immune responses. Moreover, the serum antibodies from the immunized mice and piglets significantly inhibited the adherence of F4+ or both F4+ and F18+ ETEC wild-type strains to porcine intestinal cell lines in vitro, indicating the potential of RIPSs as promising probiotic strains plus vaccine candidates against F4+/F18+ ETEC infection.
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Affiliation(s)
- Bingming Ou
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
- College of Life Science, Zhaoqing University, Zhaoqing 526061, China
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou 225009, China
- Diagnostic Medicine/Pathobiology, Kansas State University College of Veterinary Medicine, Manhattan, Kansas 66506, United States
| | - Boyu Jiang
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou 225009, China
| | - Duo Jin
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou 225009, China
| | - Ying Yang
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou 225009, China
- College of Animal Science, Guizhou University, Guiyang 550025, China
| | - Minyu Zhang
- College of Life Science, Zhaoqing University, Zhaoqing 526061, China
| | - Dong Zhang
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou 225009, China
| | - Haizhou Zhao
- College of Life Science, Zhaoqing University, Zhaoqing 526061, China
| | - Mengxian Xu
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou 225009, China
| | - Haoliang Song
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou 225009, China
| | - Wenwen Wu
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou 225009, China
| | - Mingliang Chen
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou 225009, China
| | - Ti Lu
- Diagnostic Medicine/Pathobiology, Kansas State University College of Veterinary Medicine, Manhattan, Kansas 66506, United States
| | - Jiachen Huang
- Diagnostic Medicine/Pathobiology, Kansas State University College of Veterinary Medicine, Manhattan, Kansas 66506, United States
| | - Hyesuk Seo
- Diagnostic Medicine/Pathobiology, Kansas State University College of Veterinary Medicine, Manhattan, Kansas 66506, United States
- Department of Pathobiology, University of Illinois at Urbana−Champaign, Urbana, Illinois 61802, United States
| | - Carolina Garcia
- Diagnostic Medicine/Pathobiology, Kansas State University College of Veterinary Medicine, Manhattan, Kansas 66506, United States
| | - Wanglong Zheng
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou 225009, China
- Diagnostic Medicine/Pathobiology, Kansas State University College of Veterinary Medicine, Manhattan, Kansas 66506, United States
| | - Weiyi Guo
- College of Life Science, Zhaoqing University, Zhaoqing 526061, China
| | - Yinhua Lu
- Key Laboratory of Synthetic Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Yu Jiang
- Key Laboratory of Synthetic Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Sheng Yang
- Key Laboratory of Synthetic Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Radhey S. Kaushik
- Biology and Microbiology Department, South Dakota State University, Brookings, South Dakota 57007, United States
| | - Xinchang Li
- College of Life Science, Zhaoqing University, Zhaoqing 526061, China
| | - Weiping Zhang
- Diagnostic Medicine/Pathobiology, Kansas State University College of Veterinary Medicine, Manhattan, Kansas 66506, United States
- Department of Pathobiology, University of Illinois at Urbana−Champaign, Urbana, Illinois 61802, United States
| | - Guoqiang Zhu
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou 225009, China
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4
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Wang W, Liu Y, Tang H, Yu Y, Zhang Q. ITGB5 Plays a Key Role in Escherichia coli F4ac-Induced Diarrhea in Piglets. Front Immunol 2019; 10:2834. [PMID: 31921118 PMCID: PMC6927286 DOI: 10.3389/fimmu.2019.02834] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 11/18/2019] [Indexed: 11/13/2022] Open
Abstract
Enterotoxigenic Escherichia coli (ETEC) that expresses F4ac fimbriae is the major pathogenic microorganism responsible for bacterial diarrhea in neonatal piglets. The susceptibility of piglets to ETEC F4ac is determined by a specific receptor on the small intestinal epithelium surface. We performed an iTRAQ-labeled quantitative proteome analysis using a case-control design in which susceptible and resistant full-sib piglets were compared for the protein expression levels. Two thousand two hundred forty-nine proteins were identified, of which 245 were differentially expressed (fold change > 1.5, FDR-adjusted P < 0.05). The differentially expressed proteins fell into four functional classes: (I) cellular adhesion and binding, (II) metabolic process, (III) apoptosis and proliferation, and (IV) immune response. The integrin signaling pathway merited particular interest based on a pathway analysis using statistical overexpression and enrichment tests. Genomic locations of the integrin family genes were determined based on the most recent porcine genome sequence assembly (Sscrofa11.1). Only one gene, ITGB5, which encodes the integrin β5 subunit that assorts with the αv subunit to generate integrin αvβ5, was located within the SSC13q41 region between 13:133161078 and 13:139609422, where strong associations of markers with the ETEC F4ac susceptibility were found in our previous GWAS results. To identify whether integrin αvβ5 is the ETEC F4acR, we established an experimental model for bacterial adhesion using IPEC-J2 cells. Then, the ITGB5 gene was knocked out in IPEC-J2 cell lines using CRISPR/Cas9, resulting in a biallelic deletion cell line (ITGB5 -/-). Disruption of ITGB5 significantly reduced ETEC F4ac adhesion to porcine intestinal epithelial cells. In contrast, overexpression of ITGB5 significantly enhanced the adhesion. A GST pull-down assay with purified FaeG and ITGB5 also showed that FaeG binds directly to ITGB5. Together, the results suggested that ITGB5 is a key factor affecting the susceptibility of piglets to ETEC F4ac.
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Affiliation(s)
- Wenwen Wang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an, China
| | - Yang Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Hui Tang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an, China
| | - Ying Yu
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Qin Zhang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an, China
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Massacci FR, Tofani S, Forte C, Bertocchi M, Lovito C, Orsini S, Tentellini M, Marchi L, Lemonnier G, Luise D, Blanc F, Castinel A, Bevilacqua C, Rogel-Gaillard C, Pezzotti G, Estellé J, Trevisi P, Magistrali CF. Host genotype and amoxicillin administration affect the incidence of diarrhoea and faecal microbiota of weaned piglets during a natural multiresistant ETEC infection. J Anim Breed Genet 2019; 137:60-72. [PMID: 31482656 DOI: 10.1111/jbg.12432] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/01/2019] [Accepted: 08/05/2019] [Indexed: 12/27/2022]
Abstract
Enterotoxigenic Escherichia coli (ETEC) is the aetiological agent of postweaning diarrhoea (PWD) in piglets. The SNPs located on the Mucine 4 (MUC4) and Fucosyltransferase 1 (FUT1) genes have been associated with the susceptibility to ETEC F4 and ETEC F18, respectively. The interplay between the MUC4 and FUT1 genotypes to ETEC infection and the use of amoxicillin in modifying the intestinal microbiota during a natural infection by multiresistant ETEC strains have never been investigated. The aim of this study was to evaluate the effects of the MUC4 and FUT1 genotypes and the administration of amoxicillin through different routes on the presence of diarrhoea and the faecal microbiota composition in piglets naturally infected with ETEC. Seventy-one piglets were divided into three groups: two groups differing by amoxicillin administration routes-parenteral (P) or oral (O) and a control group without antibiotics (C). Faecal scores, body weight, presence of ETEC F4 and F18 were investigated 4 days after the arrival in the facility (T0), at the end of the amoxicillin administration (T1) and after the withdrawal period (T2). The faecal bacteria composition was assessed by sequencing the 16S rRNA gene. We described that MUC4 and FUT1 genotypes were associated with the presence of ETEC F4 and ETEC F18. The faecal microbiota was influenced by the MUC4 genotypes at T0. We found the oral administration to be associated with the presence of diarrhoea at T1 and T2. Furthermore, the exposure to amoxicillin resulted in significant alterations of the faecal microbiota. Overall, MUC4 and FUT1 were confirmed as genetic markers for the susceptibility to ETEC infections in pigs. Moreover, our data highlight that group amoxicillin treatment may produce adverse outcomes on pig health in course of multiresistant ETEC infection. Therefore, alternative control measures able to maintain a healthy faecal microbiota in weaners are recommended.
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Affiliation(s)
- Francesca Romana Massacci
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche 'Togo Rosati', Perugia, Italy.,Department of Agricultural and Food Sciences, University of Bologna, Bologna, Italy.,GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Silvia Tofani
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche 'Togo Rosati', Perugia, Italy
| | - Claudio Forte
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche 'Togo Rosati', Perugia, Italy
| | - Micol Bertocchi
- Department of Agricultural and Food Sciences, University of Bologna, Bologna, Italy
| | - Carmela Lovito
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche 'Togo Rosati', Perugia, Italy
| | - Serenella Orsini
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche 'Togo Rosati', Perugia, Italy
| | - Michele Tentellini
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche 'Togo Rosati', Perugia, Italy
| | - Lucia Marchi
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche 'Togo Rosati', Perugia, Italy
| | - Gaetan Lemonnier
- GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Diana Luise
- Department of Agricultural and Food Sciences, University of Bologna, Bologna, Italy
| | - Fany Blanc
- GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Adrien Castinel
- GeT-PlaGe, Genotoul, INRA US1426, Castanet-Tolosan Cedex, France
| | - Claudia Bevilacqua
- GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | | | - Giovanni Pezzotti
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche 'Togo Rosati', Perugia, Italy
| | - Jordi Estellé
- GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Paolo Trevisi
- Department of Agricultural and Food Sciences, University of Bologna, Bologna, Italy
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Effect of mucin 4 allele on susceptibility to experimental infection with enterotoxigenic F4 Escherichia coli in pigs fed experimental diets. J Anim Sci Biotechnol 2019; 10:56. [PMID: 31346463 PMCID: PMC6636048 DOI: 10.1186/s40104-019-0366-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 05/22/2019] [Indexed: 01/19/2023] Open
Abstract
Background This study investigated the validity of the DNA-marker based test to determine susceptibility to ETEC-F4 diarrhoea by comparing the results of two DNA sequencing techniques in weaner pigs following experimental infection with F4 enterotoxigenic Escherichia coli (ETEC-F4). The effects of diet and genetic susceptibility were assessed by measuring the incidence of piglet post-weaning diarrhoea (PWD), faecal E. coli shedding and the diarrhoea index. Results A DNA marker-based test targeting the mucin 4 gene (MUC4) that encodes F4 fimbria receptor identified pigs as either fully susceptible (SS), partially or mildly susceptible (SR), and resistant (RR) to developing ETEC-F4 diarrhoea. To further analyse this, DNA sequencing was undertaken, and a significantly higher proportion of C nucleotides was observed for RR and SR at the XbaI cleavage site genotypes when compared to SS. However, no significant difference was found between SR and RR genotypes. Therefore, results obtained from Sanger sequencing retrospectively allocated pigs into a resistant genotype (MUC4–), in the case of a C nucleotide, and a susceptible genotype (MUC4+), in the case of a G nucleotide, at the single nucleotide polymorphism site. A total of 72 weaner pigs (age ~ 21 days), weighing 6.1 ± 1.2 kg (mean ± SEM), were fed 3 different diets: (i) positive control (PC) group supplemented with 3 g/kg zinc oxide (ZnO), (ii) negative control (NC) group (no ZnO or HAMSA), and (iii) a diet containing a 50 g/kg high-amylose maize starch product (HAMSA) esterified with acetate. At days five and six after weaning, all pigs were orally infected with ETEC (serotype O149:F4; toxins LT1, ST1, ST2 and EAST). The percentage of pigs that developed diarrhoea following infection was higher (P = 0.05) in MUC4+ pigs compared to MUC4– pigs (50% vs. 26.8%, respectively). Furthermore, pigs fed ZnO had less ETEC-F4 diarrhoea (P = 0.009) than pigs fed other diets, however faecal shedding of ETEC was similar (P > 0.05) between diets. Conclusion These results confirm that MUC4+ pigs have a higher prevalence of ETEC-F4 diarrhoea following exposure, and that pigs fed ZnO, irrespective of MUC4 status, have reduced ETEC-F4 diarrhoea. Additionally, sequencing or quantifying the single nucleotide polymorphism distribution at the XbaI cleavage site may be more reliable in identifying genotypic susceptibility when compared to traditional methods.
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Resistance to ETEC F4/F18-mediated piglet diarrhoea: opening the gene black box. Trop Anim Health Prod 2019; 51:1307-1320. [PMID: 31127494 DOI: 10.1007/s11250-019-01934-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 05/15/2019] [Indexed: 01/08/2023]
Abstract
Diarrhoea, a significant problem in pig rearing industry affecting pre- and post-weaning piglets is caused by enterotoxigenic Escherichia coli (ETEC). The ETEC are classified as per the fimbriae types which are responsible for bacterial attachment with enterocytes and release of toxins causing diarrhoea. However, genetic difference exists for susceptibility to ETEC infection in piglets. The different phenotypes found in pigs determine their (pigs') susceptibility or resistance towards fimbrial subtypes/variants (F4ab, F4ac, F4ad and F18). Specific receptors are present on intestinal epithelium for attachment of these fimbriae, which do not express to same level in all animals. This differential expression is genetically determined and thus their genetic causes (may be putative candidate gene or mutations) render some animals resistant or susceptible to one or more fimbrial subtypes. Genetic linkage studies have revealed the mapping location of the receptor loci for the two most frequent variants F4ab and F4ac to SSC13q41 (i.e. q arm of 13th chromosome of Sus scrofa). Some SNPs have been identified in mucin gene family, transferring receptor gene, fucosyltransferase 1 gene and swine leucocyte antigen locus that are proposed to be linked mutations for resistance/susceptibility towards ETEC diarrhoea. However, owing to the variety of fimbrial types and subtypes, it would be difficult to identify a single causative mutation and the candidate loci may involve more number of genes/regions. In this review, we focus on the genetic mutations in genes involved in imparting resistance/susceptibility to F4 or F18 ETEC diarrhoea and possibilities to use them as marker for selection against susceptible animals.
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8
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Xu Z, Sun H, Zhang Z, Zhao Q, Olasege BS, Li Q, Yue Y, Ma P, Zhang X, Wang Q, Pan Y. Assessment of Autozygosity Derived From Runs of Homozygosity in Jinhua Pigs Disclosed by Sequencing Data. Front Genet 2019; 10:274. [PMID: 30984245 PMCID: PMC6448551 DOI: 10.3389/fgene.2019.00274] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 03/12/2019] [Indexed: 12/21/2022] Open
Abstract
Jinhua pig, a well-known Chinese indigenous breed, has evolved as a pig breed with excellent meat quality, greater disease resistance, and higher prolificacy. The reduction in the number of Jinhua pigs over the past years has raised concerns about inbreeding. Runs of homozygosity (ROH) along the genome have been applied to quantify individual autozygosity to improve the understanding of inbreeding depression and identify genes associated with traits of interest. Here, we investigated the occurrence and distribution of ROH using next-generation sequencing data to characterize autozygosity in 202 Jinhua pigs, as well as to identify the genomic regions with high ROH frequencies within individuals. The average inbreeding coefficient, based on ROH longer than 1 Mb, was 0.168 ± 0.052. In total, 18,690 ROH were identified in all individuals, among which shorter segments (1-5 Mb) predominated. Individual ROH autosome coverage ranged from 5.32 to 29.14% in the Jinhua population. On average, approximately 16.8% of the whole genome was covered by ROH segments, with the lowest coverage on SSC11 and the highest coverage on SSC17. A total of 824 SNPs (about 0.5%) and 11 ROH island regions were identified (occurring in over 45% of the samples). Genes associated with reproduction (HOXA3, HOXA7, HOXA10, and HOXA11), meat quality (MYOD1, LPIN3, and CTNNBL1), appetite (NUCB2) and disease resistance traits (MUC4, MUC13, MUC20, LMLN, ITGB5, HEG1, SLC12A8, and MYLK) were identified in ROH islands. Moreover, several quantitative trait loci for ham weight and ham fat thickness were detected. Genes in ROH islands suggested, at least partially, a selection for economic traits and environmental adaptation, and should be subject of future investigation. These findings contribute to the understanding of the effects of environmental and artificial selection in shaping the distribution of functional variants in the pig genome.
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Affiliation(s)
- Zhong Xu
- Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Hao Sun
- Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Zhe Zhang
- Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Qingbo Zhao
- Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Babatunde Shittu Olasege
- Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Qiumeng Li
- Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Yang Yue
- Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Peipei Ma
- Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Xiangzhe Zhang
- Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Qishan Wang
- Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Yuchun Pan
- Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Veterinary Biotechnology, Shanghai, China
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9
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Hu D, Rampoldi A, Bratus-Neuenschwander A, Hofer A, Bertschinger HU, Vögeli P, Neuenschwander S. Effective genetic markers for identifying the Escherichia coli F4ac receptor status of pigs. Anim Genet 2019; 50:136-142. [PMID: 30724375 DOI: 10.1111/age.12770] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/13/2018] [Indexed: 11/28/2022]
Abstract
The F4ac receptor locus (F4acR), which encodes susceptibility or resistance to Escherichia coli diarrhoea, is inherited as an autosomal recessive monogenetic trait. F4acR is localized on pig chromosome 13 (SSC13q41-q44) near the MUC13 gene. Two flanking markers (CHCF1 and ALGA0106330) with a high linkage disequilibrium (LD) with F4acR were found to be effective for the genetic identification of F4ac-resistant pigs in the Swiss Large White breed (one recombinant out of 2034 genotyped pigs). Three recombinant boars, one each from the Duroc, Swiss Landrace and Piétrain breeds, were genotyped with seven different markers and phenotyped by means of a microscopic adhesion test. Only ALGA0072075, CHCF1 and CHCF3 indicated the correct phenotype. To test the effect of the resistance allele on production traits, 530 Large White pigs from the national test station were investigated. A significant difference existed among the F4acR locus genotypes in the intramuscular fat content of the longissimus dorsi muscle, whereas no other production traits were influenced by the resistance allele. The frequency of the CHCF1-C and ALGA0106330-A alleles associated with resistance in the Swiss Large White population was 60%, which is advantageous for implementing this trait in a breeding programme to select for E. coli F4ac-resistant animals. The selection of resistant pigs should start on the male side due to the inability of resistant sows to produce sufficient amounts of protecting antibodies in the colostrum. Selection of genetically F4ac-resistant pigs is a sustainable and suitable alternative to decreasing animal loss and antibiotic use due to diarrhoea.
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Affiliation(s)
- D Hu
- Institute of Agricultural Sciences, ETH Zurich, Tannenstrasse 1, 8092, Zurich, Switzerland
| | - A Rampoldi
- Institute of Agricultural Sciences, ETH Zurich, Tannenstrasse 1, 8092, Zurich, Switzerland
| | | | - A Hofer
- SUISAG, Allmend 8, 6204 Sempach, Switzerland
| | - H U Bertschinger
- Institute of Agricultural Sciences, ETH Zurich, Tannenstrasse 1, 8092, Zurich, Switzerland
| | - P Vögeli
- Institute of Agricultural Sciences, ETH Zurich, Tannenstrasse 1, 8092, Zurich, Switzerland
| | - S Neuenschwander
- Institute of Agricultural Sciences, ETH Zurich, Tannenstrasse 1, 8092, Zurich, Switzerland
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10
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Guevarra RB, Lee JH, Lee SH, Seok MJ, Kim DW, Kang BN, Johnson TJ, Isaacson RE, Kim HB. Piglet gut microbial shifts early in life: causes and effects. J Anim Sci Biotechnol 2019; 10:1. [PMID: 30651985 PMCID: PMC6330741 DOI: 10.1186/s40104-018-0308-3] [Citation(s) in RCA: 199] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 12/18/2018] [Indexed: 01/23/2023] Open
Abstract
The gut microbiome has long been known to play fundamentally important roles in the animal health and the well-being of its host. As such, the establishment and maintenance of a beneficial gut microbiota early in life is crucial in pigs, since early gut colonizers are pivotal in the establishment of permanent microbial community structures affecting the health and growth performance of pigs later in life. Emphasizing this importance of early gut colonizers, it is critical to understand the factors impacting the establishment of the piglet gut microbiome at weaning. Factors include, among others, diet, in-feed antibiotics, probiotics and prebiotic administration. The impact of these factors on establishment of the gut microbiome of piglets at weaning includes effects on piglet gut microbial diversity, structure, and succession. In this review, we thoroughly reviewed the most recent findings on the piglet gut microbiome shifts as influenced by weaning, and how these microbiome changes brought about by various factors that have been shown to affect the development of microbiota in piglets. This review will provide a general overview of recent studies that can help to facilitate the design of new strategies to modulate the gut microbiome in order to enhance gastrointestinal health, growth performance and well-being of piglets.
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Affiliation(s)
- Robin B Guevarra
- 1Department of Animal Resources Science, Dankook University, Cheonan, 31116 South Korea
| | - Jun Hyung Lee
- 1Department of Animal Resources Science, Dankook University, Cheonan, 31116 South Korea
| | - Sun Hee Lee
- 1Department of Animal Resources Science, Dankook University, Cheonan, 31116 South Korea
| | - Min-Jae Seok
- 1Department of Animal Resources Science, Dankook University, Cheonan, 31116 South Korea
| | - Doo Wan Kim
- 2National Institute of Animal Science, Rural Development Administration, Cheonan, 55365 South Korea
| | - Bit Na Kang
- 3Abbvie Bioresearch Center, Abbvie, Worcester, MA 01605 USA
| | - Timothy J Johnson
- 4Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, MN 55108 USA
| | - Richard E Isaacson
- 4Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, MN 55108 USA
| | - Hyeun Bum Kim
- 1Department of Animal Resources Science, Dankook University, Cheonan, 31116 South Korea
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11
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Gao X, Guo D, Kou M, Xing G, Zha A, Yang X, Wang X, Di S, Cai J, Niu B. Identification of porcine CTLA4 gene polymorphism and their association with piglet diarrhea and performance traits. Mol Biol Rep 2018; 46:813-822. [PMID: 30515696 DOI: 10.1007/s11033-018-4536-6] [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: 08/25/2018] [Accepted: 11/28/2018] [Indexed: 11/29/2022]
Abstract
The objective of this study was to evaluate the association between the cytotoxic T-lymphocyte-associated antigen 4 (CTLA4) gene and piglet diarrhea. In this study, the mRNA expression of the CTLA4 gene increased significantly in IPEC-J2 cells after Escherichia coli K88 infection. Single nucleotide polymorphisms (SNPs) located in the 5' flanking region (SNPs g.107281989C>T) and 3'-untranslated region (3'-UTR; SNPs g.107288753C>A) were identified, and they were in linkage disequilibrium in both Min pigs and the Landrace population. Association analysis showed that Landrace piglets with a TT or AA genotype had a lower diarrhea index, and AA animals had higher average daily gain when compared to CC pigs, respectively (p < 0.05). However, the relationship between SNPs and diarrhea and performance traits in the Min population was not significant. Haplotype analysis indicated that the TC haplotype had the lowest diarrhea index. The 5' flanking deletion assay suggested that SNP g.107281989C>T was a molecular marker instead of the functional marker. This research demonstrated that genetic variances in the CTLA4 gene had significant effects on Landrace piglet diarrhea resistance.
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Affiliation(s)
- Xiaowen Gao
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, China
| | - Dongchun Guo
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Harbin, 150001, China
| | - Mingxing Kou
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, China
| | - Guiling Xing
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, China
| | - Andong Zha
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, China
| | - Xiuqin Yang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, China
| | - Xibiao Wang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, China
| | - Shengwei Di
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, China
| | | | - Buyue Niu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, China.
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12
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Cell membrane-anchored MUC4 promotes tumorigenicity in epithelial carcinomas. Oncotarget 2017; 8:14147-14157. [PMID: 27829225 PMCID: PMC5355169 DOI: 10.18632/oncotarget.13122] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 10/26/2016] [Indexed: 12/17/2022] Open
Abstract
The cell surface membrane-bound mucin protein MUC4 promotes tumorigenicity, aggressive behavior, and poor outcomes in various types of epithelial carcinomas, including pancreatic, breast, colon, ovarian, and prostate cancer. This review summarizes the theories and findings regarding MUC4 function, and its role in epithelial carcinogenesis. Based on these insights, we developed an outline of the processes and mechanisms by which MUC4 critically supports the propagation and survival of cancer cells in various epithelial organs. MUC4 may therefore be a useful prognostic and diagnostic tool that improves our ability to eradicate various forms of cancer.
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13
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Liu Y, Hu Z, Yang C, Wang L, Wang S, Wang W, Zhang Q. Evaluation of two promising genes from the target region of SSC13 with susceptibility towards the ETEC F4ac adhesion in pigs. ITALIAN JOURNAL OF ANIMAL SCIENCE 2017. [DOI: 10.1080/1828051x.2017.1298409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Yang Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Zhengzheng Hu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Chen Yang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Lina Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Shiwei Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Wenwen Wang
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, Beijing, China
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Qin Zhang
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, Beijing, China
- College of Animal Science and Technology, China Agricultural University, Beijing, China
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14
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Dubreuil JD, Isaacson RE, Schifferli DM. Animal Enterotoxigenic Escherichia coli. EcoSal Plus 2016; 7:10.1128/ecosalplus.ESP-0006-2016. [PMID: 27735786 PMCID: PMC5123703 DOI: 10.1128/ecosalplus.esp-0006-2016] [Citation(s) in RCA: 165] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Indexed: 12/13/2022]
Abstract
Enterotoxigenic Escherichia coli (ETEC) is the most common cause of E. coli diarrhea in farm animals. ETEC are characterized by the ability to produce two types of virulence factors: adhesins that promote binding to specific enterocyte receptors for intestinal colonization and enterotoxins responsible for fluid secretion. The best-characterized adhesins are expressed in the context of fimbriae, such as the F4 (also designated K88), F5 (K99), F6 (987P), F17, and F18 fimbriae. Once established in the animal small intestine, ETEC produce enterotoxin(s) that lead to diarrhea. The enterotoxins belong to two major classes: heat-labile toxins that consist of one active and five binding subunits (LT), and heat-stable toxins that are small polypeptides (STa, STb, and EAST1). This review describes the disease and pathogenesis of animal ETEC, the corresponding virulence genes and protein products of these bacteria, their regulation and targets in animal hosts, as well as mechanisms of action. Furthermore, vaccines, inhibitors, probiotics, and the identification of potential new targets by genomics are presented in the context of animal ETEC.
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Affiliation(s)
- J Daniel Dubreuil
- Faculté de Médecine Vétérinaire, Université de Montréal, Québec J2S 7C6, Canada
| | - Richard E Isaacson
- Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, MN 55108
| | - Dieter M Schifferli
- School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104
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15
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Xia P, Wang Y, Zhu C, Zou Y, Yang Y, Liu W, Hardwidge PR, Zhu G. Porcine aminopeptidase N binds to F4+ enterotoxigenic Escherichia coli fimbriae. Vet Res 2016; 47:24. [PMID: 26857562 PMCID: PMC4746772 DOI: 10.1186/s13567-016-0313-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 01/25/2016] [Indexed: 11/26/2022] Open
Abstract
F4+ enterotoxigenic Escherichia coli (ETEC) strains cause diarrheal disease in neonatal and post-weaned piglets. Several different host receptors for F4 fimbriae have been described, with porcine aminopeptidase N (APN) reported most recently. The FaeG subunit is essential for the binding of the three F4 variants to host cells. Here we show in both yeast two-hybrid and pulldown assays that APN binds directly to FaeG, the major subunit of F4 fimbriae, from three serotypes of F4+ ETEC. Modulating APN gene expression in IPEC-J2 cells affected ETEC adherence. Antibodies raised against APN or F4 fimbriae both reduced ETEC adherence. Thus, APN mediates the attachment of F4+E. coli to intestinal epithelial cells.
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Affiliation(s)
- Pengpeng Xia
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, China. .,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Yiting Wang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, China. .,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Congrui Zhu
- College of Animal Medicine, Nanjing Agriculture University, Nanjing, 210095, China.
| | - Yajie Zou
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, China. .,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Ying Yang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, China. .,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Wei Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, China. .,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Philip R Hardwidge
- College of Veterinary Medicine, Kansas State University, Manhattan, KS, 66506, USA.
| | - Guoqiang Zhu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, China. .,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
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16
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Zhou D, Zhu YH, Zhang W, Wang ML, Fan WY, Song D, Yang GY, Jensen BB, Wang JF. Oral administration of a select mixture of Bacillus probiotics generates Tr1 cells in weaned F4ab/acR- pigs challenged with an F4+ ETEC/VTEC/EPEC strain. Vet Res 2015; 46:95. [PMID: 26384321 PMCID: PMC4574530 DOI: 10.1186/s13567-015-0223-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 08/17/2015] [Indexed: 12/18/2022] Open
Abstract
Although breeding of F4 receptor − negative (F4R−) pigs may prevent post-weaning diarrhea, the underlying immunity is poorly understood. Here, various doses of a Bacillus licheniformis and Bacillus subtilis mixture (BLS-mix) were orally administered to F4ab/acR− pigs for 1 week before F4 (K88) − positive ETEC/VTEC/EPEC challenge. Administration of BLS-mix increased the percentage of Foxp3−IL-10+ T cells but not of Foxp3+IL-10+ regulatory T (Treg) cells among peripheral blood CD4+ T cells. A low dose of BLS-mix feeding resulted in increased the expression of IL-6, TNF-α, IL-10, and the transcription factors Foxp3 and T-bet mRNAs in the jejunum. Administration of either a low or high dose BLS-mix also led to an increase in the percentage of CD4+Foxp3+ Treg cells among intraepithelial lymphocytes and CD4+IL-10+ T cells in the small intestinal Peyer’s patches and the lamina propria of F4ab/acR− pigs following F4+ ETEC/VTEC/EPEC challenge. The increased number of IL-10–producing CD4+ T cells was attributed to an increase in the proportion of Foxp3−IL-10+ Treg cells rather than Foxp3+IL-10+ Treg cells. Our data indicate that oral administration of BLS-mix to newly weaned F4ab/acR− pigs ameliorates enteritis in an F4+ ETEC/VTEC/EPEC model; however, induction of IL-10–producing Foxp3− Treg cells by BLS-mix administration cannot account for the protection of newly weaned F4ab/acR− pigs from F4+ ETEC/VTEC/EPEC infection, and that excessive generation of CD4+IL-10+ T cells following consumption of BLS-mix during episodes of intestinal inflammation that is caused by enteric pathogens might prohibit clearance of the pathogen. Select probiotic mixtures may allow for tailoring strategies to prevent infectious diseases.
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Affiliation(s)
- Dong Zhou
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Yao-Hong Zhu
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Wei Zhang
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Meng-Ling Wang
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Wen-Yi Fan
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Dan Song
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Gui-Yan Yang
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Bent Borg Jensen
- Division of Microbiology and Immunology, Danish Center for Food and Agriculture, Aarhus University, DK 8830, Tjele, Denmark.
| | - Jiu-Feng Wang
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
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17
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Xia P, Zou Y, Wang Y, Song Y, Liu W, Francis DH, Zhu G. Receptor for the F4 fimbriae of enterotoxigenic Escherichia coli (ETEC). Appl Microbiol Biotechnol 2015; 99:4953-9. [PMID: 25967654 DOI: 10.1007/s00253-015-6643-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Revised: 04/22/2015] [Accepted: 04/24/2015] [Indexed: 12/29/2022]
Abstract
Infection with F4(+) enterotoxigenic Escherichia coli (ETEC) responsible for diarrhea in neonatal and post-weaned piglets leads to great economic losses in the swine industry. These pathogenic bacteria express either of three fimbrial variants F4ab, F4ac, and F4ad, which have long been known for their importance in host infection and initiating protective immune responses. The initial step in infection for the bacterium is to adhere to host enterocytes through fimbriae-mediated recognition of receptors on the host cell surface. A number of receptors for ETEC F4 have now been described and characterized, but their functions are still poorly understood. The current review summarizes the latest research addressing the characteristics of F4 fimbriae receptors and the interactions of F4 fimbriae and their receptors on host cells. These include observations that as follows: (1) FaeG mediates the binding activities of F4 and is an essential component of the F4 fimbriae, (2) the F4 fimbrial receptor gene is located in a region of chromosome 13, (3) the biochemical properties of F4 fimbrial receptors that form the binding site of the bacterium are now recognized, and (4) specific receptors confer susceptibility/resistance to ETEC F4 infection in pigs. Characterizing the host-pathogen interaction will be crucial to understand the pathogenicity of the bacteria, provide insights into receptor activation of the innate immune system, and develop therapeutic strategies to prevent this illness.
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Affiliation(s)
- Pengpeng Xia
- College of Veterinary Medicine, Yangzhou University, 12 East Wenhui Road, Yangzhou, 225009, China
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18
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Syrovnev GI. Genetic polymorphism of FUT1 and MUC4 loci in a local population of Ukrainian meat bread pigs. CYTOL GENET+ 2014. [DOI: 10.3103/s0095452714050119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Goetstouwers T, Van Poucke M, Coppieters W, Nguyen VU, Melkebeek V, Coddens A, Van Steendam K, Deforce D, Cox E, Peelman LJ. Refined candidate region for F4ab/ac enterotoxigenic Escherichia coli susceptibility situated proximal to MUC13 in pigs. PLoS One 2014; 9:e105013. [PMID: 25137053 PMCID: PMC4138166 DOI: 10.1371/journal.pone.0105013] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 07/15/2014] [Indexed: 11/19/2022] Open
Abstract
F4 enterotoxigenic Escherichia coli (F4 ETEC) are an important cause of diarrhea in neonatal and newly-weaned pigs. Based on the predicted differential O-glycosylation patterns of the 2 MUC13 variants (MUC13A and MUC13B) in F4ac ETEC susceptible and F4ac ETEC resistant pigs, the MUC13 gene was recently proposed as the causal gene for F4ac ETEC susceptibility. Because the absence of MUC13 on Western blot from brush border membrane vesicles of F4ab/acR+ pigs and the absence of F4ac attachment to immunoprecipitated MUC13 could not support this hypothesis, a new GWAS study was performed using 52 non-adhesive and 68 strong adhesive pigs for F4ab/ac ETEC originating from 5 Belgian farms. A refined candidate region (chr13: 144,810,100–144,993,222) for F4ab/ac ETEC susceptibility was identified with MUC13 adjacent to the distal part of the region. This candidate region lacks annotated genes and contains a sequence gap based on the sequence of the porcine GenomeBuild 10.2. We hypothesize that a porcine orphan gene or trans-acting element present in the identified candidate region has an effect on the glycosylation of F4 binding proteins and therefore determines the F4ab/ac ETEC susceptibility in pigs.
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Affiliation(s)
- Tiphanie Goetstouwers
- Laboratory of Animal Genetics, Faculty of Veterinary Medicine, Ghent University, Belgium
| | - Mario Van Poucke
- Laboratory of Animal Genetics, Faculty of Veterinary Medicine, Ghent University, Belgium
| | - Wouter Coppieters
- Unit of Animal Genomics, GIGA-R and Faculty of Veterinary Medicine, University of Liège (B34), Liège (Sart Tilman), Belgium
| | - Van Ut Nguyen
- Laboratory of Immunology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Vesna Melkebeek
- Laboratory of Immunology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Annelies Coddens
- Laboratory of Immunology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Katleen Van Steendam
- Laboratory of Pharmaceutical Biotechnology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Dieter Deforce
- Laboratory of Pharmaceutical Biotechnology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Eric Cox
- Laboratory of Immunology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Luc J. Peelman
- Laboratory of Animal Genetics, Faculty of Veterinary Medicine, Ghent University, Belgium
- * E-mail:
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20
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Zhou C, Liu Z, Liu Y, Fu W, Ding X, Liu J, Yu Y, Zhang Q. Gene silencing of porcine MUC13 and ITGB5: candidate genes towards Escherichia coli F4ac adhesion. PLoS One 2013; 8:e70303. [PMID: 23922972 PMCID: PMC3726385 DOI: 10.1371/journal.pone.0070303] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Accepted: 06/17/2013] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Integrin beta-5 (ITGB5) and mucin 13 (MUC13) genes are highly expressed on the apical surface of intestinal epithelia and are thought to be candidate genes for controlling the expression of the receptor for enterotoxigenic Escherichia coli (ETEC) F4ac. Human MUC13 protein has an expected role in protecting intestinal mucosal surfaces and porcine ITGB5 is a newly identified potential receptor for ETEC F4ac. METHODOLOGY/PRINCIPAL FINDINGS To test the hypothesis that ITGB5 and MUC13 both play key roles in protection of the intestinal mucosa against pathogenic bacterium, porcine intestinal epithelial cells (IPEC-J2) were transfected with ITGB5-targeting, MUC13-targeting or negative control small interfering RNA (siRNA), respectively. Firstly, we measured mRNA expression levels of mucin genes (MUC4, MUC20), pro-inflammatory genes (IL8, IL1A, IL6, CXCL2), anti-inflammatory mediator SLPI, and PLAU after RNAi treatments with and without ETEC infection. Secondly, we compared the adhesions of ETEC to the pre- and post-knockdown IPEC-J2 cells of ITGB5 and MUC13, respectively. We found that ITGB5 and MUC13 knockdown both had small but significant effects in attenuating the inflammation induced by ETEC infection, and both increased bacterial adhesion in response to F4ac ETEC exposure. CONCLUSIONS/SIGNIFICANCE Our current study first reported that ITGB5 and MUC13 are important adhesion molecules of mucosal epithelial signaling in response to Escherichia coli in pigs. These data suggest that both ITGB5 and MUC13 play key roles in defending the attachment and adhesion of ETEC to porcine jejunal cells and in maintaining epithelial barrier and immunity function.
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Affiliation(s)
- Chuanli Zhou
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China
| | - Zhengzhu Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China
- Department of Animal Science, College of Animal Science and Technology, Hebei Normal University of Science and Technology, Changli, P.R. China
| | - Yang Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China
| | - Weixuan Fu
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China
| | - Xiangdong Ding
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China
| | - Jianfeng Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China
| | - Ying Yu
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China
- * E-mail: (YY); (QZ)
| | - Qin Zhang
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China
- * E-mail: (YY); (QZ)
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Virulence profiles of enterotoxigenic, shiga toxin and enteroaggregative Escherichia coli in South African pigs. Trop Anim Health Prod 2013; 45:1399-405. [PMID: 23417826 DOI: 10.1007/s11250-013-0377-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/05/2013] [Indexed: 10/27/2022]
Abstract
Enterotoxigenic Escherichia coli (ETEC) and shiga toxin E. coli (STEC) are important causes of colibacillosis in piglets. Recently, enteroaggregative E. coli heat-stable enterotoxin 1 (EAST-1) has been implicated in pig diarrhoea. This study investigated the prevalence of enterotoxin [heat-labile toxins (LT), heat-stable toxin a (STa), heat-stable toxin b (STb)], shiga toxins (Stx1, Stx2, Stx2e), enteroaggregative heat-stable E. coli (EAST-1), associated fimbriae (F4, F5, F6, F41, F18ab, F18ac) and non-fimbrial adhesins [adhesin involved in diffuse adherence 1 (AIDA-1), attaching and effacing factor, porcine attaching- and effacing-associated factor] in South African pigs. A total of 263 E. coli strains were isolated from Landrace (n = 24), Large White (n = 126), Duroc (n = 28) and indigenous (n = 85) breeds of piglets aged between 9 and 136 days. PCR was used in the analysis. Virulent genes were detected in 40.3% of the isolates, of which 18.6, 0.4 and 17.5% were classified as ETEC, STEC and enteroaggregative E. coli (EAEC), respectively. Individual genes were found in the following proportions: STb (19.01%), LT (0.4%), STa (3.4%), St2xe (1.1%) and EAST-1 (20.2%) toxins. None of the tested fimbriae were detected in ETEC and STEC isolates. About one third of the ETEC and STEC isolates was tested negative for both fimbrial and non-fimbrial adhesins. Twenty-five pathotypes from ETEC-, EAEC- and STEC-positive strains were identified. Pathotypes EAST-1 (30.2%), STb (13.2%) and STb/AIDA-1 (10.4%) were most prevalent. The study provided insight on possible causes of colibacillosis in South African pigs.
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Kreuzer S, Reissmann M, Brockmann GA. Gene test to elucidate the ETEC F4ab/F4ac receptor status in pigs. Vet Microbiol 2013; 162:293-5. [DOI: 10.1016/j.vetmic.2012.07.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Accepted: 07/31/2012] [Indexed: 01/26/2023]
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23
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Fontanesi L, Bertolini F, Dall'Olio S, Buttazzoni L, Gallo M, Russo V. Analysis of association between the MUC4 g.8227C>G polymorphism and production traits in Italian heavy pigs using a selective genotyping approach. Anim Biotechnol 2012; 23:147-55. [PMID: 22870870 DOI: 10.1080/10495398.2011.653462] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
In pigs, susceptibility to enterotoxigenic Escherichia coli (ETEC) K88 strains (locus F4bcR) is determined by a dominant allele, with the recessive allele determining resistance. The susceptible allele also appeared to be associated with higher growth rate even with discordant results. A single nucleotide polymorphism (SNP) in exon 7 of the mucin 4 (MUC4) gene (DQ848681:g.8227C>G), shown to be in close linkage disequilibrium with the F4bcR locus, has been used as marker to identify susceptible pigs, substituting invasive villous adhesion tests. We herein analyzed this SNP in Italian local breeds and applied a selective genotyping approach in Italian Large White, Italian Landrace, and Italian Duroc comparing allele frequency distribution in groups of pigs with extreme estimated breeding values (EBV) for average daily gain (ADG) and backfat thickness (BFT) to evaluate if this marker is associated with these traits. Allele G (associated with susceptibility to ETEC) was associated with higher ADG and BFT in Italian Large White (P=6.66E-04 and P=0.012, respectively) and higher ADG in Italian Landrace (P=7.23E-12). This polymorphism was poorly informative in Italian Duroc. Antagonistic associations of the MUC4 g.8227C>G alleles on susceptibility to ETEC and growth performances evidence the complexity of applying marker assisted selection in pig breeding.
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Affiliation(s)
- Luca Fontanesi
- Dept. of Agro-Food Science and Technology, Sezione di Allevamenti Zootecnici, University of Bologna, Bologna, Italy.
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Schroyen M, Stinckens A, Verhelst R, Niewold T, Buys N. The search for the gene mutations underlying enterotoxigenic Escherichia coli F4ab/ac susceptibility in pigs: a review. Vet Res 2012; 43:70. [PMID: 23061722 PMCID: PMC3499147 DOI: 10.1186/1297-9716-43-70] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Accepted: 09/27/2012] [Indexed: 11/16/2022] Open
Abstract
Diarrhoea due to enterotoxigenic Escherichia coli with fimbriae F4 (ETEC-F4) is an important problem in neonatal and just weaned piglets and hence for the pig farming industry. There is substantial evidence for a genetic basis for susceptibility to ETEC-F4 since not all piglets suffer from diarrhoea after an ETEC-F4 infection. It is assumed that the wild boar was originally ETEC-F4 resistant and that susceptibility towards ETEC arose after domestication. There are different phenotypes in the pig determined by which of the three existing F4 variants (F4ab, F4ac or F4ad) they are susceptible or resistant for. This suggests that several F4 receptors exist, expressed individually or in combination with each other on the brush border of the piglet’s small intestine. As such, the mucin-type glycoproteins (IMTGP) are described as F4ab/ac receptors, while the intestinal neutral glycospingolipid (IGLad) is proposed as an F4ad receptor. GP74 is a putative F4ab receptor. However, the specific genes that encode for the susceptibility are not yet known. In the past decades, linkage analyses revealed that the loci encoding for the receptor(s) for the two most frequent variants F4ab and F4ac were mapped to the 13th chromosome of the pig (Sus scrofa 13, SSC13). After fine mapping, the region of interest was mapped between two microsatellite markers, Sw207 and S0075, and interesting candidate genes surfaced. Numerous SNP analyses and a few expression studies on the three MUC-genes (MUC4, MUC13 and MUC20) and the transferrin receptor gene (TFRC) as well as on some other positional candidate genes have been performed in order to find the causative mutation for the ETEC-F4ab/ac receptor(s). However, until today, the exact mutation causing susceptibility to ETEC-F4 remains unknown.
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Affiliation(s)
- Martine Schroyen
- Department Biosystems, KU Leuven, Kasteelpark Arenberg 30, 3001, Heverlee, Belgium.
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Ren J, Yan X, Ai H, Zhang Z, Huang X, Ouyang J, Yang M, Yang H, Han P, Zeng W, Chen Y, Guo Y, Xiao S, Ding N, Huang L. Susceptibility towards enterotoxigenic Escherichia coli F4ac diarrhea is governed by the MUC13 gene in pigs. PLoS One 2012; 7:e44573. [PMID: 22984528 PMCID: PMC3440394 DOI: 10.1371/journal.pone.0044573] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Accepted: 08/03/2012] [Indexed: 11/18/2022] Open
Abstract
Enterotoxigenic Escherichia coli (ETEC) F4ac is a major determinant of diarrhea and mortality in neonatal and young pigs. Susceptibility to ETEC F4ac is governed by the intestinal receptor specific for the bacterium and is inherited as a monogenic dominant trait. To identify the receptor gene (F4acR), we first mapped the locus to a 7.8-cM region on pig chromosome 13 using a genome scan with 194 microsatellite markers. A further scan with high density markers on chromosome 13 refined the locus to a 5.7-cM interval. Recombination breakpoint analysis defined the locus within a 2.3-Mb region. Further genome-wide mapping using 39,720 informative SNPs revealed that the most significant markers were proximal to the MUC13 gene in the 2.3-Mb region. Association studies in a collection of diverse outbred populations strongly supported that MUC13 is the most likely responsible gene. We characterized the porcine MUC13 gene that encodes two transcripts: MUC13A and MUC13B. Both transcripts have the characteristic PTS regions of mucins that are enriched in distinct tandem repeats. MUC13B is predicated to be heavily O-glycosylated, forming the binding site of the bacterium; while MUC13A does not have the O-glycosylation binding site. Concordantly, 127 independent pigs homozygous for MUC13A across diverse breeds are all resistant to ETEC F4ac, and all 718 susceptible animals from the broad breed panel carry at least one MUC13B allele. Altogether, we conclude that susceptibility towards ETEC F4ac is governed by the MUC13 gene in pigs. The finding has an immediate translation into breeding practice, as it allows us to establish an efficient and accurate diagnostic test for selecting against susceptible animals. Moreover, the finding improves our understanding of mucins that play crucial roles in defense against enteric pathogens. It revealed, for the first time, the direct interaction between MUC13 and enteric bacteria, which is poorly understood in mammals.
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Affiliation(s)
- Jun Ren
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
- * E-mail: (LH); (JR)
| | - Xueming Yan
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
- College of Life Science, Jiangxi Science and Technology Normal University, Nanchang, People’s Republic of China
| | - Huashui Ai
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Zhiyan Zhang
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Xiang Huang
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Jing Ouyang
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Ming Yang
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Huaigu Yang
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Pengfei Han
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Weihong Zeng
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Yijie Chen
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Yuanmei Guo
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Shijun Xiao
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Nengshui Ding
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Lusheng Huang
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, People’s Republic of China
- * E-mail: (LH); (JR)
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Zhou C, Liu Z, Jiang J, Yu Y, Zhang Q. Differential gene expression profiling of porcine epithelial cells infected with three enterotoxigenic Escherichia coli strains. BMC Genomics 2012; 13:330. [PMID: 22823589 PMCID: PMC3472312 DOI: 10.1186/1471-2164-13-330] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2011] [Accepted: 06/30/2012] [Indexed: 11/13/2022] Open
Abstract
Background Enterotoxigenic Escherichia coli (ETEC) is one of the most important pathogenic bacteria causing severe diarrhoea in human and pigs. In ETEC strains, the fimbrial types F4 and F18 are commonly found differently colonized within the small intestine and cause huge economic losses in the swine industry annually worldwide. To address the underlying mechanism, we performed a transcriptome study of porcine intestinal epithelial cells (IPEC-J2) with and without infection of three representative ETEC strains. Results A total 2443, 3493 and 867 differentially expressed genes were found in IPEC-J2 cells infected with F4ab ETEC (CF4ab), with F4ac ETEC (CF4ac) and with F18ac ETEC (CF18ac) compared to the cells without infection (control), respectively. The number of differentially expressed genes between CF4ab and CF4ac, CF4ab and CF18ac, and CF4ac and CF18ac were 77, 1446 and 1629, respectively. The gene ontology and pathway analysis showed that the differentially expressed genes in CF4abvs control are significantly involved in cell-cycle progress and amino acid metabolism, while the clustered terms of the differentially expressed genes in CF4acvs control comprise immune, inflammation and wounding response and apoptosis as well as cell cycle progress and proteolysis. Differentially expressed genes between CF18acvs control are mainly involved in cell-cycle progression and immune response. Furthermore, fundamental differences were observed in expression levels of immune-related genes among the three ETEC treatments, especially for the important pro-inflammatory molecules, including IL-6, IL-8, TNF-α, CCL20, CXCL2 etc. Conclusions The discovery in this study provides insights into the interaction of porcine intestinal epithelial cells with F4 ETECs and F18 ETEC, respectively. The genes induced by ETECs with F4 versus F18 fimbriae suggest why ETEC with F4 may be more virulent compared to F18 which seems to elicit milder effects.
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Affiliation(s)
- Chuanli Zhou
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, 100193 Beijing, Peoples Republic of China
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Fu WX, Liu Y, Lu X, Niu XY, Ding XD, Liu JF, Zhang Q. A genome-wide association study identifies two novel promising candidate genes affecting Escherichia coli F4ab/F4ac susceptibility in swine. PLoS One 2012; 7:e32127. [PMID: 22457712 PMCID: PMC3311625 DOI: 10.1371/journal.pone.0032127] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Accepted: 01/24/2012] [Indexed: 11/18/2022] Open
Abstract
Enterotoxigenic Escherichia coli (ETEC) expressing F4 fimbria is the major pathogenic bacteria causing diarrhoea in neonatal and post-weaning piglets. Previous studies have revealed that the susceptibility to ETEC F4ab/F4ac is an autosomal Mendelian dominant trait and the loci controlling the F4ab/F4ac receptor are located on SSC13q41, between markers SW207 and S0283. To pinpoint these loci and further validate previous findings, we performed a genome-wide association study (GWAS) using a two generation family-based population, consisting of 301 piglets with phenotypes of susceptibility to ETEC F4ab/F4ac by the vitro adhesion test. The DNA of all piglets and their parents was genotyped using the Illumina PorcineSNP60 BeadChip, and 50,972 and 50,483 SNPs were available for F4ab and F4ac susceptibility, respectively, in the association analysis after quality control. In summary, 28 and 18 significant SNPs (p<0.05) were detected associated with F4ab and F4ac susceptibility respectively at genome-wide significance level. From these significant findings, two novel candidate genes, HEG1 and ITGB5, were firstly identified as the most promising genes underlying F4ab/F4ac susceptibility in swine according to their functions and positions. Our findings herein provide a novel evidence for unravelling genetic mechanism of diarrhoea risk in piglets.
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Affiliation(s)
- Wei-Xuan Fu
- Key Laboratory of Animal Genetics Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yang Liu
- Key Laboratory of Animal Genetics Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Xin Lu
- Key Laboratory of Animal Genetics Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Centre for Disease Control and Prevention, Beijing, China
| | - Xiao-Yan Niu
- Key Laboratory of Animal Genetics Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Xiang-Dong Ding
- Key Laboratory of Animal Genetics Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Jian-Feng Liu
- Key Laboratory of Animal Genetics Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
- * E-mail: (J-FL); (QZ)
| | - Qin Zhang
- Key Laboratory of Animal Genetics Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
- * E-mail: (J-FL); (QZ)
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Ouyang J, Zeng W, Ren J, Yan X, Zhang Z, Yang M, Han P, Huang X, Ai H, Huang L. Association of B3GNT5 polymorphisms with susceptibility to ETEC F4ab/ac in the white Duroc × Erhualian intercross and 15 outbred pig breeds. Biochem Genet 2011; 50:19-33. [PMID: 21956797 DOI: 10.1007/s10528-011-9454-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2010] [Accepted: 05/12/2011] [Indexed: 11/29/2022]
Abstract
The B3GNT5 gene is a candidate for the F4ab/ac receptor conferring susceptibility to enterotoxigenic Escherichia coli (ETEC) F4ab/ac in pigs. In this study, we screened mutations in the complete coding region of the porcine B3GNT5 gene and identified four SNPs in the 3' untranslated regions. We genotyped the four SNPs across a large-scale White Duroc × Chinese Erhualian F2 resource population (total F2 = 755) and 292 purebred piglets representing 15 Chinese and Western breeds. We found that the g.1476G→A locus and haplotypes [A;T;G;T] and [A;G;G;T] had significant association with susceptibility to ETEC F4ac in the resource population. None of the B3GNT5 polymorphisms and haplotypes was associated with susceptibility to ETEC F4ab/ac in outbred piglets. This result, together with other reports, supports the conclusion that B3GNT5 is not the responsible gene encoding the ETEC F4ab/ac receptors.
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Affiliation(s)
- Jing Ouyang
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang, 330045, China
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Jacobsen M, Cirera S, Joller D, Esteso G, Kracht SS, Edfors I, Bendixen C, Archibald AL, Vogeli P, Neuenschwander S, Bertschinger HU, Rampoldi A, Andersson L, Fredholm M, Jørgensen CB. Characterisation of five candidate genes within the ETEC F4ab/ac candidate region in pigs. BMC Res Notes 2011; 4:225. [PMID: 21718470 PMCID: PMC3160978 DOI: 10.1186/1756-0500-4-225] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Accepted: 06/30/2011] [Indexed: 12/22/2022] Open
Abstract
Background Enterotoxigenic Escherichia coli (ETEC) that express the F4ab and F4ac fimbriae is a major contributor to diarrhoea outbreaks in the pig breeding industry, infecting both newborn and weaned piglets. Some pigs are resistant to this infection, and susceptibility is inherited as a simple dominant Mendelian trait. Indentifying the genetics behind this trait will greatly benefit pig welfare as well as the pig breeding industry by providing an opportunity to select against genetically susceptible animals, thereby reducing the number of diarrhoea outbreaks. The trait has recently been mapped by haplotype sharing to a 2.5 Mb region on pig chromosome 13, a region containing 18 annotated genes. Findings The coding regions of five candidate genes for susceptibility to ETEC F4ab/ac infection (TFRC, ACK1, MUC20, MUC4 and KIAA0226), all located in the 2.5 Mb region, were investigated for the presence of possible causative mutations. A total of 34 polymorphisms were identified in either coding regions or their flanking introns. The genotyping data for two of those were found to perfectly match the genotypes at the ETEC F4ab/ac locus, a G to C polymorphism in intron 11 of TFRC and a C to T silent polymorphism in exon 22 of KIAA0226. Transcriptional profiles of the five genes were investigated in a porcine tissue panel including various intestinal tissues. All five genes were expressed in intestinal tissues at different levels but none of the genes were found differentially expressed between ETEC F4ab/ac resistant and ETEC F4ab/ac susceptible animals in any of the tested tissues. Conclusions None of the identified polymorphisms are obvious causative mutations for ETEC F4ab/ac susceptibility, as they have no impact on the level of the overall mRNA expression nor predicted to influence the composition of the amino acids composition. However, we cannot exclude that the five tested genes are bona fide candidate genes for susceptibility to ETEC F4ab/ac infection since the identified polymorphism might affect the translational apparatus, alternative splice forms may exist and post translational mechanisms might contribute to disease susceptibility.
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Affiliation(s)
- Mette Jacobsen
- Department of Basic Animal and Veterinary Sciences, University of Copenhagen, 1870 Frederiksberg, Denmark.
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