Characterisation of some cytotoxic endpoints using rat liver and HepG2 spheroids as in vitro models and their application in hepatotoxicity studies. II. Spheroid cell spreading inhibition as a new cytotoxic marker

Toxicology and Applied Pharmacology
Jinsheng XuWendy Purcell

Abstract

Cells in liver spheroids and Hep G2 spheroids transferred from gyrotatory culture conditions and maintained in normal static culture conditions will spread out at the edges. Based on this observation, we developed a new test called the Spheroid Cell Spreading Inhibition Test (SCSIT) to screen hepatic cytotoxicity of xenobiotics and determine the spheroid cell spreading inhibition concentration (SCSIC) of test chemicals. Four model hepatoxicants, D-galactosamine, propranolol, diclofenac, and paracetamol, were studied with SCSIT in both rat liver and HepG2 spheroids. Both liver and HepG2 spheroids were prepared under gyrotatory culture conditions and used at 6 days in vitro. The results showed that all four hepatotoxicants tested inhibited cell spreading in liver spheroids (D-galactosamine at 20 mM, propranolol at 125 microM, diclofenac at 500 microM, and paracetamol at 25 mM) and HepG2 spheroids (D-galactosamine at 16 mM, propranolol at 125 microM, diclofenac at 500 microM, and paracetamol at 25 mM). The SCSIT results agreed with the conventional cytotoxic indicators, release of LDH and/or gamma-GT and the inhibition of glucose secretion from rat liver spheroids. In conclusion, this study, for the first time, described the biolo...Continue Reading

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Citations

Nov 25, 2003·Toxicology in Vitro : an International Journal Published in Association with BIBRA·J MorganW M Purcell
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Jul 11, 2006·Toxicology and Applied Pharmacology·Jinsheng Xu, Wendy M Purcell
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