title: Phenotypic and functional characterization of two bovine mammary epithelial cell lines in 2D and 3D models.
abstract: Immortalized bovine mammary epithelial cells (BME-UV1) and immortalized bovine mammary alveolar cells (MAC-T) have been extensively used as in vitro cell models to understand milk production in dairy cows. Precise knowledge about their phenotype and performance remains, however, unknown. This study aims to characterize MAC-T and BME-UV1 profiles when cultured in two-dimensional adherent, three-dimensional adherent (Matrigel), and three-dimensional no adherent [ultralow attachment (ULA)] supports. MAC-T and BME-UV1 were compared according to their proliferation capacities and to specific cell surface markers CD24, CD326 [epithelial cell adhesion molecule (EpCAM)], CD10, and integrin CD49f (α-6). Cytokeratin (CK14 and CK19), signal transducer and activator of transcription 5, and other proteins (occludin and cadherin-1) were analyzed. BME-UV1 in ULA support expressed higher CD49f marker. A different intensity of CD49 staining allowed the discrimination between the two cell lines in adherent condition. CD10, EpCAM, and CK19 expressions show that BME-UV1 cells have luminal capacity, while MAC-T has a myoepithelial profile with a high expression of CK14. BME-UV1 cells possess a closer committed progenitor profile due to their higher expression in aldehyde dehydrogenase and EpCAM. We observed that BME-UV1 cells have a better capacity to form spherical structures, mammospheres, in Matrigel than MAC-T, which was confirmed by the higher mammosphere area. In the ULA condition, BME-UV1 proliferated over the 6 days of culture. Taken together, our results clearly confirm the BME-UV1 luminal profile and MAC-T ductal/myoepithelial-like phenotype.
authors.affiliation: Institut National de la Recherche Agronomique, UMR1348 Pegase, Saint-Gilles, France; and Agrocampus Ouest, UMR1348 Pegase, Rennes, France.
authors.forename: Magdalena
authors.initials: M
authors.lastname: Arévalo Turrubiarte
authors.affiliation: Institut National de la Recherche Agronomique, UMR1348 Pegase, Saint-Gilles, France; and Agrocampus Ouest, UMR1348 Pegase, Rennes, France.
authors.forename: Marie-Hélène
authors.initials: MH
authors.lastname: Perruchot
authors.affiliation: Institut National de la Recherche Agronomique, UMR1348 Pegase, Saint-Gilles, France; and Agrocampus Ouest, UMR1348 Pegase, Rennes, France.
authors.forename: Laurence
authors.initials: L
authors.lastname: Finot
authors.affiliation: Institut National de la Recherche Agronomique, UMR1348 Pegase, Saint-Gilles, France; and Agrocampus Ouest, UMR1348 Pegase, Rennes, France.
authors.forename: Frédérique
authors.initials: F
authors.lastname: Mayeur
authors.affiliation: Institut National de la Recherche Agronomique, UMR1348 Pegase, Saint-Gilles, France; and Agrocampus Ouest, UMR1348 Pegase, Rennes, France frederic.dessauge@rennes.inra.fr.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Dessauge
mesh_terms: D000818:Animals; D015820:Cadherins / Q000378:metabolism; D002417:Cattle; D018929:Cell Culture Techniques; D002454:Cell Differentiation / Q000502:physiology*; D002460:Cell Line; D003470:Culture Media / Q000378:metabolism; D004847:Epithelial Cells / Q000378:metabolism*; D005260:Female; D008321:Mammary Glands, Animal / Q000378:metabolism*; D010641:Phenotype
chemical_list: D015820:Cadherins; D003470:Culture Media
keywords: ALDH; CD49f; bovine mammary alveolar cell; bovine mammary epithelial; mammary epithelial cell