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pubmed-article:2243053pubmed:abstractTextCell suspensions prepared by collagenase digestion of pancreata obtained from 21.5-d-old rat fetuses were preincubated in RPMI medium containing 10% fetal bovine serum (FBS), to ensure cell adhesion. Twenty hours later, this medium was replaced by a chemically defined medium. Dulbecco's modified Eagle's (DME)-F12 was used alone or supplemented with various combinations of transferrin, sodium selenite, or Ultroser G. The evolution of the culture and the islet ultrastructure were similar in defined and serum-containing media. However, in the defined medium, the neoformed islets seemed less numerous, and the fibroblast layer less dense, when compared to the RPMI + 10% FBS control medium. At Day 7, in defined media, the total insulin content per dish was half that of control cultures. None of the tested additives improved the yield of the cultures. The fractional insulin release per day was elevated in defined media. In subsequent incubations, glucose and leucine stimulated insulin release in a way characteristic of these cells of fetal origin. The labeling index of islet cells cultured in DME-F12 reached 10.7%, which is not far from that observed in RPMI + 10% FBS. Such a defined medium is useful to study B cell physiology, avoiding the possible interaction of serum components with substances to be tested.lld:pubmed
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pubmed-article:2243053pubmed:dateRevised2011-11-17lld:pubmed
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pubmed-article:2243053pubmed:articleTitleCulture of endocrine pancreatic cells in protein-free, chemically defined media.lld:pubmed
pubmed-article:2243053pubmed:affiliationLaboratoire de Biologie cellulaire, Université Catholique de Louvain, Louvain-la-Neuve, Belgium.lld:pubmed
pubmed-article:2243053pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:2243053pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed