title: Long-term primary culture of epithelial cells from rainbow trout Oncorhynchus mykiss) liver.
abstract: Long-term primary cultures of epithelial cells from rainbow trout (Oncorhynchus mykiss) liver have been established. Nearly homogenous (> 97%) populations of hepatocytes were placed into primary culture and remained viable and proliferative for at least 70 d. In addition to hepatocytes, proliferative biliary cells persisted in the cultures for at least 30 d. Finally, a third type of epithelial cell, which we have termed a "spindle cell," consistently appeared and proliferated to confluence in these cultures. The confluent cultures of spindle cells were successfully subcultured and passaged. The initial behavior, growth, and optimization of serum and media requirements for these cells is described. All three cell types proliferated as measured by thymidine incorporation, autoradiography, proliferating cellular nuclear antigen analysis, and propidium iodine staining. Further efforts to characterize the cells included western blotting and immunohistochemical staining with antibodies to cytokeratins previously reported in fish liver. From these data, it appears that all three cell populations are epithelial in nature. Furthermore, significant changes in actin organization, often indicative of transformation or pluripotent cells, were observed with increased time in primary culture.
authors.affiliation: Department of Zoology, Oklahoma State University, Stillwater 74078, USA.
authors.forename: G K
authors.initials: GK
authors.lastname: Ostrander
authors.forename: J B
authors.initials: JB
authors.lastname: Blair
authors.forename: B A
authors.initials: BA
authors.lastname: Stark
authors.forename: G M
authors.initials: GM
authors.lastname: Marley
authors.forename: W D
authors.initials: WD
authors.lastname: Bales
authors.forename: R W
authors.initials: RW
authors.lastname: Veltri
authors.forename: D E
authors.initials: DE
authors.lastname: Hinton
authors.forename: M
authors.initials: M
authors.lastname: Okihiro
authors.forename: L S
authors.initials: LS
authors.lastname: Ortego
authors.forename: W E
authors.initials: WE
authors.lastname: Hawkins
mesh_terms: D000199:Actins / Q000032:analysis; D000818:Animals; D001653:Bile Ducts, Intrahepatic / Q000737:chemistry / Q000166:cytology; D002455:Cell Division; D002478:Cells, Cultured; D004247:DNA / Q000032:analysis / Q000096:biosynthesis; D004847:Epithelial Cells; D004848:Epithelium / Q000737:chemistry; D005260:Female; D005434:Flow Cytometry; D007633:Keratins / Q000032:analysis; D008099:Liver / Q000737:chemistry / Q000166:cytology* / Q000378:metabolism; D008297:Male; D017686:Oncorhynchus mykiss; D018809:Proliferating Cell Nuclear Antigen / Q000032:analysis; D014746:Vimentin / Q000032:analysis
chemical_list: D000199:Actins; D018809:Proliferating Cell Nuclear Antigen; D014746:Vimentin; D007633:Keratins; D004247:DNA