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Martinez Cuesta L, Nieto Farias MV, Lendez PA, Rowland RRR, Sheahan MA, Cheuquepán Valenzuela FA, Marin MS, Dolcini G, Ceriani MC. Effect of bovine leukemia virus on bovine mammary epithelial cells. Virus Res 2019; 271:197678. [PMID: 31381943 DOI: 10.1016/j.virusres.2019.197678] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/26/2019] [Accepted: 07/28/2019] [Indexed: 12/20/2022]
Abstract
Bovine leukemia virus (BLV) is a retrovirus that infects cattle and is associated with an increase in secondary infections. The objective of this study was to analyze the effect of BLV infection on cell viability, apoptosis and morphology of a bovine mammary epithelial cell line (MAC-T), as well as Toll like receptors (TLR) and cytokine mRNA expression. Our findings show that BLV infection causes late syncytium formation, a decrease in cell viability, downregulation of the anti-apoptotic gene Bcl-2, and an increase in TLR9 mRNA expression. Moreover, we analyzed how this stably infected cell line respond to the exposure to Staphylococcus aureus (S. aureus), a pathogen known to cause chronic mastitis. In the presence of S. aureus, MAC-T BLV cells had decreased viability and decreased Bcl-2 and TLR2 mRNA expression. The results suggest that mammary epithelial cells infected with BLV have altered the apoptotic and immune pathways, probably affecting their response to bacteria and favoring the development of mastitis.
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Affiliation(s)
- Lucia Martinez Cuesta
- Laboratorio de Virología, Centro de Investigación Veterinaria de Tandil (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Pinto 399, Tandil (7000) Pcia., Buenos Aires, Argentina; Department of Diagnostic Medicine and Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, USA.
| | - Maria Victoria Nieto Farias
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, C1033AAJ Buenos Aires, Argentina
| | - Pamela A Lendez
- Laboratorio de Virología, Centro de Investigación Veterinaria de Tandil (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Pinto 399, Tandil (7000) Pcia., Buenos Aires, Argentina
| | - Raymond R R Rowland
- Department of Diagnostic Medicine and Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, USA
| | - Maureen A Sheahan
- Department of Diagnostic Medicine and Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, USA
| | - Felipe A Cheuquepán Valenzuela
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, C1033AAJ Buenos Aires, Argentina; Área de Producción Animal, Estación Experimental Agropecuaria Balcarce, Instituto Nacional de Tecnología Agropecuaria (INTA), Ruta Nacional 226 Km 73.5 (7620), Balcarce, Buenos Aires, Argentina
| | - Maia S Marin
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, C1033AAJ Buenos Aires, Argentina; Área de Producción Animal, Estación Experimental Agropecuaria Balcarce, Instituto Nacional de Tecnología Agropecuaria (INTA), Ruta Nacional 226 Km 73.5 (7620), Balcarce, Buenos Aires, Argentina
| | - Guillermina Dolcini
- Laboratorio de Virología, Centro de Investigación Veterinaria de Tandil (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Pinto 399, Tandil (7000) Pcia., Buenos Aires, Argentina
| | - Maria Carolina Ceriani
- Laboratorio de Virología, Centro de Investigación Veterinaria de Tandil (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Pinto 399, Tandil (7000) Pcia., Buenos Aires, Argentina.
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