Self-renewal and differentiation of rat epididymal basal cells using a novel in vitro organoid model†.

Biology of Reproduction
L Pinel, D G Cyr

Abstract

The epididymis is composed of a pseudostratified epithelium that is comprised of various cell types. Studies have shown that rat basal cells share common properties with adult stem cells and begin to differentiate in vitro in response to fibroblast growth factor and 5α-dihydrotestosterone. The characterization of rat basal cells is therefore necessary to fully understand the role of these cells. The objectives of this study were to assess the ability of single basal cells to develop organoids and to assess their ability to self-renew and differentiate in vitro. We isolated basal cells from the rat epididymis and established three-dimensional cell cultures from the basal and nonbasal cell fractions. Organoids were formed by single adult epididymal basal cells. Organoids were dissociated into single basal cells, which were able to reform new organoids, and were maintained over 10 generations. Long-term culture of organoids revealed that these cells could be differentiated into cells expressing the principal cell markers aquaporin 9 and cystic fibrosis transmembrane conductance regulator. Electron microscopy demonstrated that organoids were composed of several polarized cell types displaying microvilli and the ability to form tigh...Continue Reading

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