title: Inability of FMDV replication in equine kidney epithelial cells is independent of integrin αvβ3 and αvβ6.
abstract: Integrins can function as receptors for foot-and-mouth disease virus (FMDV) in epithelium. Horses are believed to be insusceptible to this disease, but the mechanism of resistance remains unclear. To detect whether FMDV can use integrin to attach to equine epithelial, we compared the utilities of αvβ3 and αvβ6 between bovine and equine kidney epithelial cells (KECs). Equine KECs showed almost equal efficiency to those of bovine. Further, the integrin αv, β3, and β6 subunits from bovine and equine were cloned and vectors were transfected into SW480 cells and COS-1 cells alone or together, and virus titers were used to determine the viral replication. In all cases, the virus reproduced successfully. Overall, FMDV can replicate in SW480 cells transfected with equine β3/β6 subunits and COS-1 cells transfected with equine αvβ3/αvβ6 integrins, but not in EKECs. These results indicated that failure of FMDV replication in EKECs was not attributed to integrin receptors.
authors.affiliation: College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, PR China.
authors.forename: Yanqin
authors.initials: Y
authors.lastname: Wang
authors.affiliation: College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, PR China.
authors.forename: Qingfu
authors.initials: Q
authors.lastname: Mao
authors.affiliation: State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046 Gansu, PR China.
authors.forename: Huiyun
authors.initials: H
authors.lastname: Chang
authors.affiliation: College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, PR China.
authors.forename: Yongyan
authors.initials: Y
authors.lastname: Wu
authors.affiliation: College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, PR China.
authors.forename: Shaohui
authors.initials: S
authors.lastname: Pan
authors.affiliation: College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, PR China.
authors.forename: Yanhe
authors.initials: Y
authors.lastname: Li
authors.affiliation: College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, PR China. Electronic address: zhy1956@263.net.
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000818:Animals; D000951:Antigens, Neoplasm / Q000235:genetics / Q000276:immunology*; D019556:COS Cells; D002417:Cattle; D002522:Chlorocebus aethiops; D003001:Cloning, Molecular; D003412:Cricetulus; D060467:Disease Resistance; D004847:Epithelial Cells / Q000276:immunology* / Q000473:pathology / Q000821:virology; D029544:Foot-and-Mouth Disease Virus / Q000235:genetics* / Q000254:growth & development; D015870:Gene Expression; D006736:Horses; D058507:Host Specificity; D039302:Integrin alphaVbeta3 / Q000235:genetics / Q000276:immunology*; D016023:Integrins / Q000235:genetics / Q000276:immunology*; D007668:Kidney / Q000276:immunology / Q000473:pathology / Q000821:virology; D011991:Receptors, Virus / Q000235:genetics / Q000276:immunology*; D011994:Recombinant Proteins / Q000235:genetics / Q000276:immunology; D019076:Transgenes; D014779:Virus Replication
chemical_list: D000951:Antigens, Neoplasm; D039302:Integrin alphaVbeta3; D016023:Integrins; D011991:Receptors, Virus; D011994:Recombinant Proteins; C073878:integrin alphavbeta6
keywords: Bovine; Equine; FMDV; Integrin; Receptor