Establishment and comparative analyses of different culture conditions of primary hepatocytes from Nile tilapia (Oreochromis niloticus) as a model to study stress induction in vitro

  • Joseph O. Jung'a
  • Eric S. Mitema
  • Herwig O. Gutzeit
Reports

Summary

We established an in vitro hepatocyte primary culture system from Oreochromis niloticus, a tropical fish species of great economical importance, and evaluated its ability to express albumin, a liver-specific protein, consistently for a period of 3 wk. Serum requirements for fish hepatocyte cultures were assessed. A one-step in situ perfusion of tilapia liver retrogradely followed by collagenase liver dissociation and subsequent washing produced nearly 90% homogenous viable hepatocytes, as shown by trypan blue exclusion test. Mixed primary monolayer and aggregate hepatocyte cultures achieved by 10% fetal calf serum medium supplements expressed consistent levels of albumin. The results of light and electron microscopy showed that the hepatocytes did not significantly proliferate (P<0.05) but remained viable for at least 3 wk. The results of this study show that in vitro cultures of mixed primary hepatocyte monolayers and aggregates established from Nile tilapia may be useful models for studying transient cellular stress induction.

Key words

primary hepatocytes bioassay model system transient cellular stress expression Nile tilapia HSP70 

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Copyright information

© Society for In Vitro Biology 2005

Authors and Affiliations

  • Joseph O. Jung'a
    • 1
    • 3
  • Eric S. Mitema
    • 2
  • Herwig O. Gutzeit
    • 1
  1. 1.Institute of Zoology, Faculty of Mathematics and Natural SciencesTechnische Universität (TU)DresdenGermany
  2. 2.Faculty of Veterinary MedicineUniversity of NairobiNairobiKenya
  3. 3.Institute of Primate ResearchNational Museums of KenyaKarenKenya

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