Abstract
This work describes a protocol to culture epididymal epithelial cells from the caput, corpus, and cauda regions of Sus domesticus. Epididymal epithelial fragments were obtained by dissection and enzymatic digestion with collagenase. About 30 epididymal fragments from each epididymal region were cultured in 24-well culture plates with supplemented RPMI-1640 medium at 37 degrees C, 5% CO2 in air, and 100% humidity. A confluent monolayer of polygonal and tightly packed epithelioid cells from the three epididymal regions was obtained after 12-16 days in culture and maintained in vitro for more than 60 days. The proportion of epididymal epithelial cells in these cultures was assessed by immunofluorescent staining for cytokeratins. Throughout the 2 months of culture, about 80% of the cells were cytokeratin-positive. Electron microscopy observations indicated that cultured cells from caput, corpus, and cauda epididymal regions were tightly adhered to each other by junctional complexes and that stereocilia were present in their apical membranes. Moreover, the presence of an extensive rough endoplasmic reticulum, Golgi apparatus and numerous vesicles in the cytoplasm suggested that cultured cells maintained secretory and absorptive acti...Continue Reading
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