Gene expression changes in spleens of the wildlife reservoir species,Eurasian wild boar(Sus scrofa),naturally infected with Brucella suis biovar 2  

作　　者：Ruth C.Galindo Pilar M.Muoz María J.de Miguel Clara M.Marin Javier Labairu Miguel Revilla José M.Blasco Christian Gortazar José de la Fuente 

机构地区：[1]Instituto de Investigación en Recursos Cinegéticos IREC(CSIC-UCLM-JCCM) [2]Unidad de Sanidad Animal,Centro de Investigación y Tecnología Agroalimentaria(CITA) [3]ITG Ganadero,Avda. Serapio Huici 22,31610 Villaba,Navarra,Spain [4]Departamento de Patología Animal,Facultad de Veterinaria,University of Zaragoza [5]Department of Veterinary Pathobiology,Center for Veterinary Health Sciences,Oklahoma State University

出　　处：《Journal of Genetics and Genomics》2010年第11期725-736,共12页遗传学报（英文版）

基　　金：supported by the Grupo Santander and Fundación Marcelino Botín,Spain (Project Control of Tu-berculosis in Wildlife), Ministerio de Educación y Ciencia (MEC;Project AGL2005-07401);FEDER,Spain. R.C. Galindo was funded by MEC,Spain

摘　　要：Brucella suis is responsible for swine brucellosis worldwide. Of the five different B. suis biovars （by.）, bv. 2 appears restricted to Europe where it is frequently isolated from wild boar and hares, can infect pigs and can cause human brucellosis. In this study, the differ- ential gene expression profile was characterized in spleens of Eurasian wild boar naturally infected with B. suis bv. 2. Of the 20,201 genes analyzed in the microarray, 633 and 1,373 were significantly （fold change 〉 1.8; P 〈 0.01） upregulated and downregulated, respectively, in infected wild boar. The analysis was focused on genes that were over represented after conditional test for biological process gene ontology. Upregulated genes suggested that B. suis bv. 2 infection induced cell maturation, migration and/or proliferation in infected animals. The genes downregulated in infected wild boar impaired the activity of several important cellular metabolic pathways such as metabolism, cytoskeleton organization and biogenesis, immune response and lysosomal function and vesicle-mediated transport. In addition, the response to stress, sperm fertility, muscle development and apoptosis seemed to be also impaired in infected animals. These results suggested that B. suis bv. 2 may use strategies similar to other smooth brucellae to facilitate intracellular multiplication and the development of chronic infections. To our knowledge, this is the first report of the analysis of gene expression profile in hosts infected with B. suis bv. 2, which is important to understand the molecular mechanisms at the host-pathogen interface in the main reservoir species with possible implications in the zoonotic cycle of the pathogen.Brucella suis is responsible for swine brucellosis worldwide. Of the five different B. suis biovars （by.）, bv. 2 appears restricted to Europe where it is frequently isolated from wild boar and hares, can infect pigs and can cause human brucellosis. In this study, the differ- ential gene expression profile was characterized in spleens of Eurasian wild boar naturally infected with B. suis bv. 2. Of the 20,201 genes analyzed in the microarray, 633 and 1,373 were significantly （fold change 〉 1.8; P 〈 0.01） upregulated and downregulated, respectively, in infected wild boar. The analysis was focused on genes that were over represented after conditional test for biological process gene ontology. Upregulated genes suggested that B. suis bv. 2 infection induced cell maturation, migration and/or proliferation in infected animals. The genes downregulated in infected wild boar impaired the activity of several important cellular metabolic pathways such as metabolism, cytoskeleton organization and biogenesis, immune response and lysosomal function and vesicle-mediated transport. In addition, the response to stress, sperm fertility, muscle development and apoptosis seemed to be also impaired in infected animals. These results suggested that B. suis bv. 2 may use strategies similar to other smooth brucellae to facilitate intracellular multiplication and the development of chronic infections. To our knowledge, this is the first report of the analysis of gene expression profile in hosts infected with B. suis bv. 2, which is important to understand the molecular mechanisms at the host-pathogen interface in the main reservoir species with possible implications in the zoonotic cycle of the pathogen.

关 键 词：Brucella suis BOAR GENOMICS microarray systems biology 

分 类 号：S852.61[农业科学—基础兽医学]