Estudio del efecto del Virus de la Leucosis Bovina en el epitelio mamario humano y bovino
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 infect in vitro a bovine and human mammary epithelial cell line (MAC-T and MCF10A, respectively) and analyze the effect of those infections....
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| Formato: | Tesis doctoral acceptedVersion |
| Lenguaje: | Español |
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Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica
2020
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| Acceso en línea: | http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=posgraafa&cl=CL1&d=HWA_6345 https://repositoriouba.sisbi.uba.ar/gsdl/collect/posgraafa/index/assoc/HWA_6345.dir/6345.PDF |
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I28-R145-HWA_6345 |
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I28-R145-HWA_63452025-06-24 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 infect in vitro a bovine and human mammary epithelial cell line (MAC-T and MCF10A, respectively) and analyze the effect of those infections. Our findings show that BLV stably infects MAC-T causing late syncytium formation, a decrease in cell viability, downregulation of the anti-apoptotic gene Bcl-2, and an increase in TLR9 and TNF-? mRNA expression. Moreover, in the presence of S. aureus, MAC-T BLV cells had decreased viability and decreased Bcl-2 and TLR2 mRNA expression. What is more, MAC-T BLV cells have altered expression of genes related to the innate immune response and defense against virus. All together, these 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. On the other hand, MCF10A cells infected with BLV does not release viral proteins or ARN to the supernatant. Only a fragment of the viral gene pol was detected in the cellular DNA suggesting that the infection is not productive. Fil: Martínez Cuesta, Lucía. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Buenos Aires, Argentina Cavallaro, Lucía V. Ceriani, María Carolina Martínez Cuesta, Lucía 2020-03-03 El virus de la leucosis bovina (BLV) es un retrovirus que infecta al ganado bovino y se asocia con un aumento en la incidencia de infecciones secundarias. El objetivo de este trabajo fue infectar in vitro una línea celular epitelial mamaria bovina y humana (MAC-T y MCF10A, respectivamente). Los resultados muestran que el BLV infecta de manera estable a las células MAC-T formando sincitios, disminuyendo la viabilidad y la expresión del gen anti apoptótico Bcl-2, y aumentando la expresión de ARNm de TLR9 y TNF-?. En presencia de S. aureus, las células MAC-T BLV disminuyen la viabilidad y la expresión de Bcl-2 y TLR2. Además, las células MAC-T BLV presentan alteraciones en la expresión de genes de la respuesta inmune anitiviral. Estos resultados sugieren que las células epiteliales mamarias bovinas infectadas con BLV tienen alteradas las vías de la apoptosis y la respuesta inmune, probablemente afectando la respuesta ante bacterias y favoreciendo el desarrollo de mastitis. Por otro lado, las células MCF10A infectadas con BLV no liberan proteínas ni ARN viral al medio extracelular. Sólo fue posible detectar la presencia del gen viral pol en el ADN celular, lo cual sugiere que la infección no es productiva. application/pdf Campos, Rodolfo Mundo, Silvia Odeon, Anselmo BLV Mastitis Cáncer de mama spa Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ Ciencias de la vida Doctora de la Universidad de Buenos Aires en Ciencias Bioquímicas Estudio del efecto del Virus de la Leucosis Bovina en el epitelio mamario humano y bovino info:eu-repo/semantics/doctoralThesis info:ar-repo/semantics/tesis doctoral info:eu-repo/semantics/acceptedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=posgraafa&cl=CL1&d=HWA_6345 https://repositoriouba.sisbi.uba.ar/gsdl/collect/posgraafa/index/assoc/HWA_6345.dir/6345.PDF |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (UBA) |
| language |
Español |
| orig_language_str_mv |
spa |
| topic |
BLV Mastitis Cáncer de mama Ciencias de la vida |
| spellingShingle |
BLV Mastitis Cáncer de mama Ciencias de la vida Martínez Cuesta, Lucía Estudio del efecto del Virus de la Leucosis Bovina en el epitelio mamario humano y bovino |
| topic_facet |
BLV Mastitis Cáncer de mama Ciencias de la vida |
| description |
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 infect in vitro a bovine and human mammary epithelial cell line (MAC-T and MCF10A, respectively) and analyze the effect of those infections. Our findings show that BLV stably infects MAC-T causing late syncytium formation, a decrease in cell viability, downregulation of the anti-apoptotic gene Bcl-2, and an increase in TLR9 and TNF-? mRNA expression. Moreover, in the presence of S. aureus, MAC-T BLV cells had decreased viability and decreased Bcl-2 and TLR2 mRNA expression. What is more, MAC-T BLV cells have altered expression of genes related to the innate immune response and defense against virus. All together, these 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. On the other hand, MCF10A cells infected with BLV does not release viral proteins or ARN to the supernatant. Only a fragment of the viral gene pol was detected in the cellular DNA suggesting that the infection is not productive. |
| author2 |
Cavallaro, Lucía V. |
| author_facet |
Cavallaro, Lucía V. Martínez Cuesta, Lucía |
| format |
Tesis doctoral Tesis doctoral acceptedVersion |
| author |
Martínez Cuesta, Lucía |
| author_sort |
Martínez Cuesta, Lucía |
| title |
Estudio del efecto del Virus de la Leucosis Bovina en el epitelio mamario humano y bovino |
| title_short |
Estudio del efecto del Virus de la Leucosis Bovina en el epitelio mamario humano y bovino |
| title_full |
Estudio del efecto del Virus de la Leucosis Bovina en el epitelio mamario humano y bovino |
| title_fullStr |
Estudio del efecto del Virus de la Leucosis Bovina en el epitelio mamario humano y bovino |
| title_full_unstemmed |
Estudio del efecto del Virus de la Leucosis Bovina en el epitelio mamario humano y bovino |
| title_sort |
estudio del efecto del virus de la leucosis bovina en el epitelio mamario humano y bovino |
| publisher |
Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica |
| publishDate |
2020 |
| url |
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=posgraafa&cl=CL1&d=HWA_6345 https://repositoriouba.sisbi.uba.ar/gsdl/collect/posgraafa/index/assoc/HWA_6345.dir/6345.PDF |
| work_keys_str_mv |
AT martinezcuestalucia estudiodelefectodelvirusdelaleucosisbovinaenelepiteliomamariohumanoybovino |
| _version_ |
1840330235033157632 |