title: Predictivity of dog co-culture model, primary human hepatocytes and HepG2 cells for the detection of hepatotoxic drugs in humans.
abstract: Drug induced liver injury (DILI) is a major cause of attrition during early and late stage drug development. Consequently, there is a need to develop better in vitro primary hepatocyte models from different species for predicting hepatotoxicity in both animals and humans early in drug development. Dog is often chosen as the non-rodent species for toxicology studies. Unfortunately, dog in vitro models allowing long term cultures are not available. The objective of the present manuscript is to describe the development of a co-culture dog model for predicting hepatotoxic drugs in humans and to compare the predictivity of the canine model along with primary human hepatocytes and HepG2 cells. After rigorous optimization, the dog co-culture model displayed metabolic capacities that were maintained up to 2 weeks which indicates that such model could be also used for long term metabolism studies. Most of the human hepatotoxic drugs were detected with a sensitivity of approximately 80% (n=40) for the three cellular models. Nevertheless, the specificity was low approximately 40% for the HepG2 cells and hepatocytes compared to 72.7% for the canine model (n=11). Furthermore, the dog co-culture model showed a higher superiority for the classification of 5 pairs of close structural analogs with different DILI concerns in comparison to both human cellular models. Finally, the reproducibility of the canine system was also satisfactory with a coefficient of correlation of 75.2% (n=14). Overall, the present manuscript indicates that the dog co-culture model may represent a relevant tool to perform chronic hepatotoxicity and metabolism studies.
authors: UCB Pharma SA, Non-Clinical Development, Chemin du Foriest, 1420 Braine-l'Alleud, Belgium. Electronic address: franck.atienzar@ucb.com.
authors: Franck A
authors: FA
authors: Atienzar
authors: Hμrel Corporation, 675 U.S. Highway 1, North Brunswick, NJ 08902, USA.
authors: Eric I
authors: EI
authors: Novik
authors: UCB Pharma SA, Non-Clinical Development, Chemin du Foriest, 1420 Braine-l'Alleud, Belgium.
authors: Helga H
authors: HH
authors: Gerets
authors: Hμrel Corporation, 675 U.S. Highway 1, North Brunswick, NJ 08902, USA.
authors: Amit
authors: A
authors: Parekh
authors: UCB Pharma SA, Non-Clinical Development, Chemin du Foriest, 1420 Braine-l'Alleud, Belgium.
authors: Claude
authors: C
authors: Delatour
authors: UCB Pharma SA, Non-Clinical Development, Chemin du Foriest, 1420 Braine-l'Alleud, Belgium.
authors: Alvaro
authors: A
authors: Cardenas
authors: Chrysalis Pharma Consulting, LLC, 385 Route 24, Suite 1G, Chester, NJ 07930, USA.
authors: James
authors: J
authors: MacDonald
authors: Department of Biomedical Engineering, Rutgers University, Piscataway, NJ 08854, USA.
authors: Martin L
authors: ML
authors: Yarmush
authors: UCB Pharma SA, Non-Clinical Development, Chemin du Foriest, 1420 Braine-l'Alleud, Belgium.
authors: Stéphane
authors: S
authors: Dhalluin
mesh_terms: D000255:Adenosine Triphosphate / Q000378:metabolism; D000818:Animals; D015415:Biomarkers / Q000378:metabolism; D002465:Cell Movement / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D056486:Chemical and Drug Induced Liver Injury / Q000517:prevention & control; D018920:Coculture Techniques; D004285:Dogs; D004353:Drug Evaluation, Preclinical / Q000379:methods*; D015507:Drugs, Investigational / Q000009:adverse effects*; D017097:Electric Impedance; D005978:Glutathione / Q000378:metabolism; D056945:Hep G2 Cells; D022781:Hepatocytes / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D006801:Humans; D015203:Reproducibility of Results; D015398:Signal Transduction / Q000187:drug effects; D017154:Stromal Cells / Q000166:cytology / Q000187:drug effects / Q000378:metabolism
chemical_list: D015415:Biomarkers; D015507:Drugs, Investigational; D000255:Adenosine Triphosphate; D005978:Glutathione
keywords: Chronic studies; Dog co-culture model; HepG2 cells; Hepatotoxicity; Metabolism; Primary human hepatocytes