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

Ruth C. Galindo; Pilar M. Muñoz; María J. de Miguel; Clara M. Marin; Javier Labairu; Miguel Revilla; José M. Blasco; Christian Gortazar; José de la Fuente

doi:10.1016/S1673-8527(09)60090-4

Volume 37 Issue 11

Nov. 2010

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Article Navigation > Journal of Genetics and Genomics > 2010 > 37(11): 725-736

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

doi: 10.1016/S1673-8527(09)60090-4

a
Instituto de Investigación en Recursos Cinegéticos IREC (CSIC-UCLM-JCCM), Ronda de Toledo s/n, 13005 Ciudad Real, Spain
b
Unidad de Sanidad Animal, Centro de Investigación y Tecnología Agroalimentaria (CITA), Gobierno de Aragón, Av. Montañana 930, 50059 Zaragoza, Spain
c
ITG Ganadero, Avda. Serapio Huici 22, 31610 Villaba, Navarra, Spain
d
Departamento de Patología Animal, Facultad de Veterinaria, University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
e
Department of Veterinary Pathobiology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK 74078, USA

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Corresponding author: E-mail address: jose_delafuente@yahoo.com (José de la Fuente)
Received Date: 2010-05-11
Accepted Date: 2010-10-01
Rev Recd Date: 2010-09-08

Available Online: 2010-11-27

Publish Date: 2010-11-20

Abstract

Abstract

Brucella suis is responsible for swine brucellosis worldwide. Of the five different B. suis biovars (bv.), 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 differential 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 thatB. 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.
- boar,
- genomics,
- microarray,
- systems biology

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References(40)

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