PVD9902, a porcine vas deferens epithelial cell line that exhibits neurotransmitter-stimulated anion secretion and expresses numerous HCO3−transporters
Open Access
- 1 June 2006
- journal article
- Published by American Physiological Society in American Journal of Physiology-Cell Physiology
- Vol. 290 (6), C1560-C1571
- https://doi.org/10.1152/ajpcell.00468.2005
Abstract
Epithelial ion transport disorders, including cystic fibrosis, adversely affect male reproductive function by nonobstructive mechanisms and by obstruction of the distal duct. Continuous cell lines that could be used to define ion transport mechanisms in this tissue are not readily available. In the present study, porcine vas deferens epithelial cells were isolated by standard techniques, and the cells spontaneously immortalized to form a porcine vas deferens epithelial cell line that we have titled PVD9902. Cells were maintained in continuous culture for >4 yr and 200 passages in a typical growth medium. Frozen stocks were generated, and thawed cells exhibited growth characteristics indistinguishable from their nonfrozen counterparts. Molecular and immunocytochemical studies confirmed the origin and epithelial nature of these cells. When seeded on permeable supports, PVD9902 cells grew as electrically tight (>6,000 Ω·cm2), confluent monolayers that responded to forskolin with an increase in short-circuit current (Isc; 8 ± 1 μA/cm2) that required Cl−, HCO3−, and Na+, and was partially sensitive to bumetanide. mRNA was expressed for a number of anion transporters, including CFTR, electrogenic Na+-HCO3− cotransporter 1b (NBCe1b), downregulated in adenoma, pendrin, and Cl−/formate exchanger. Both forskolin and isoproterenol caused an increase in cellular cAMP levels. In addition, PVD9902 cell monolayers responded to physiological (i.e., adenosine, norepinephrine) and pharmacological [i.e., 5′-(N-ethylcarboxamido)adenosine, isoproterenol] agonists with increases in Isc. Unlike their freshly isolated counterparts, however, PVD9902 cells did not respond to glucocorticoid exposure with an increase in amiloride-sensitive Isc. RT-PCR analysis revealed the presence of both glucocorticoid and mineralocorticoid receptor mRNA as well as mRNA for the α- and γ-subunits of the epithelia Na+ channels (α- and γ-ENaC), but not β-ENaC. Nonetheless, PVD9902 cells recapitulated most observations in freshly isolated cells and thus represent a powerful new tool to characterize mechanisms that contribute to male reproductive function.Keywords
This publication has 53 references indexed in Scilit:
- CFTR mutations and polymorphisms in male infertilityInternational Journal of Andrology, 2004
- Membrane Potential and Bicarbonate Secretion in Isolated Interlobular Ducts from Guinea-pig PancreasThe Journal of general physiology, 2002
- Regulatory Interaction between the Cystic Fibrosis Transmembrane Conductance Regulator and HCO Salvage Mechanisms in Model Systems and the Mouse Pancreatic DuctJournal of Biological Chemistry, 2001
- Cystic Fibrosis Transmembrane Conductance Regulator Regulates Luminal Cl−/HCO3−Exchange in Mouse Submandibular and Pancreatic DuctsPublished by Elsevier BV ,1999
- Bicarbonate and Chloride Secretion in Calu-3 Human Airway Epithelial CellsThe Journal of general physiology, 1999
- CFTR gene and male fertilityMolecular Human Reproduction, 1998
- NORMAL VAS DEFERENS IN FETUSES WITH CYSTIC FIBROSISJournal of Urology, 1997
- Regulation of the motility and metabolism of spermatozoa for storage in the epididymis of eutherian and marsupial mammalsReproduction, Fertility and Development, 1996
- Chloride channels on epithelial cells cultured from human fetal epididymisThe Journal of Membrane Biology, 1991
- Fine structural studies of the rat vas deferensThe Anatomical Record, 1979