The effects of fetal bovine serum, epidermal growth factor, and retinoic acid on adult rat islets embedded in collagen gels

Jun Seop Shin, Hyo Ihl Chang, Ha Chin Sung, Chan Wha Kim

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The induction of proliferation of adult rat islets was investigated under various culture conditions. The islets were isolated from male Sprague- Dawley rats and subsequently embedded in collagen gels, which mimic the in vivo three-dimensional surroundings. During the culture period, the effects of heterologous serum (fetal bovine serum, FBS), epidermal growth factor (EGF), and retinoic acid (RA) on islet growth were examined with respect to the morphological and total DNA content changes. To investigate these changes at the cellular level, whole mount immunocytochemistry using specific antibodies for insulin and glucagon was performed. The results showed that (i) collagen gels as an extracellular matrix can maintain islets in a similar way to that in vivo, (ii) heterologous serum (FBS) had stimulatory effects on islet proliferation in a dose-dependent manner, (iii) RA had inhibitory effects on islet proliferation induced by the serum in a dose-dependent manner, (iv) EGF had weak inhibitory effects on islet proliferation induced by the serum except at the concentration of 10 nM where its effect was not significant, and (v) whole mount immunocytochemistry revealed that newly proliferated islet cells were mainly β- and α-cells.

Original languageEnglish
Pages (from-to)150-156
Number of pages7
JournalJournal of microbiology and biotechnology
Volume9
Issue number2
Publication statusPublished - 1999 Apr

Keywords

  • Collagen gel
  • Pancreatic islet
  • Whole mount immunocytochemistry

ASJC Scopus subject areas

  • Biotechnology
  • Applied Microbiology and Biotechnology

Fingerprint Dive into the research topics of 'The effects of fetal bovine serum, epidermal growth factor, and retinoic acid on adult rat islets embedded in collagen gels'. Together they form a unique fingerprint.

  • Cite this