PMID: 7033108Nov 1, 1981Paper

The influence of cell shape on the induction of functional differentiation in mouse mammary cells in vitro

In Vitro
J M Shannon, D Pitelka

Abstract

To define more clearly the in vitro conditions permissive for hormonal induction of functional differentiation, we cultured dissociated normal mammary cells from prelactating mice in or on a variety of substrates. Cultivation of an enriched epithelial cell population in association with living adult mammary stroma in the presence of lactogenic hormones resulted in both morphological and biochemical differentiation. This differentiation, however, was not enhanced over that seen when the cells were associated with killed stroma, provided that the killed stroma had a flexibility similar to that of the living stroma. Cells cultured in inflexible killed stroma usually did not differentiate. Cells cultured within the flexible environment of a collagen gel, but removed from the gas-medium interface, differentiated in a manner similar to those cultured in flexible stroma. Cells cultured on the surface of an attached collagen gel were squamous, and their basolateral surfaces were sequestered from the medium; they did not differentiate. Cells cultured on floating collagen gels were cuboidal-columnar, with basolateral surfaces exposed to the medium, and showed good functional differentiation. Cells cultured on inflexible floating collagen...Continue Reading

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Citations

Apr 1, 1992·Cell and Tissue Research·J E FergusonM W Ferguson
Jan 1, 1996·Journal of Mammary Gland Biology and Neoplasia·M M Ip, K M Darcy
Jan 1, 1983·In Vitro·C A Heckman
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