title: Comparative functional study of clonal insulin-secreting cells cultured in five commercially available tissue culture media.
abstract: The electrofusion-derived rat insulin-secreting cell line BRIN-BD11 was cultured in five different commercially available media to determine the optimum medium for the in vitro maintenance of such clonal cell lines. Cells were cultured in RPMI-1640, DMEM, McCOY'S, F-12K, or MEM culture medium supplemented with 10% (v/v) fetal bovine serum and antibiotics (100 U/ml penicillin and 0.1 g/L streptomycin). Insulin secretion studies performed after 10 days revealed RPMI-1640 to be the best performing medium in terms of insulin secretory responsiveness to a range of stimuli including glucose, L-alanine, L-arginine, carbachol, and glibenclamide. Insulin release was significantly decreased (p < 0.01 to p < 0.05) in all other media compared to RPMI-1640. Only the cells cultured in RPMI-1640 and DMEM showed a significant glucose-induced insulin secretory response (p < 0.01 and p < 0.05). McCOY'S gave the next best result followed by F-12K and MEM. After the 10-day culture period, the highest insulin content was found in cells cultured in RPMI-1640 and DMEM with significantly lower levels of insulin in cells cultured in McCOY'S, F-12K, and MEM (p < 0.01 to p < 0.001). RPMI-1640 was used for further studies to investigate the effects of 5.6-16.7 mmol/L glucose in culture on the secretory responsiveness of BRIN-BD11 cells. Significant responses to a number of nonglucidic secretagogues were seen following culture at 5.6 and 16.7 mmol/L glucose, although responsiveness was less than after culture with 11.1 mmol/L glucose. At 16.7 mmol/L glucose culture, glucose-stimulated insulin release was abolished.
authors.affiliation: School of Biomedical Sciences, University of Ulster, Coleraine, Northern Ireland, UK.
authors.forename: M
authors.initials: M
authors.lastname: Hamid
authors.forename: J T
authors.initials: JT
authors.lastname: McCluskey
authors.forename: N H
authors.initials: NH
authors.lastname: McClenaghan
authors.forename: P R
authors.initials: PR
authors.lastname: Flatt
mesh_terms: D000409:Alanine / Q000494:pharmacology; D000818:Animals; D001120:Arginine / Q000494:pharmacology; D002217:Carbachol / Q000494:pharmacology; D002417:Cattle; D018929:Cell Culture Techniques / Q000379:methods*; D002460:Cell Line; D002478:Cells, Cultured; D003470:Culture Media; D005905:Glyburide / Q000494:pharmacology; D007328:Insulin / Q000378:metabolism*; D000078790:Insulin Secretion; D007515:Islets of Langerhans / Q000166:cytology* / Q000187:drug effects / Q000378:metabolism*; D051381:Rats
chemical_list: D003470:Culture Media; D007328:Insulin; D002217:Carbachol; D001120:Arginine; D000409:Alanine; D005905:Glyburide