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Updated: Jul 18, 2026

Human Liver Microphysiological System for Assessing Drug-Induced Liver Toxicity In Vitro
Published on: January 31, 2022
Cytokines as potential biomarkers of liver toxicity
Sandrine Lacour1, Jean-Charles Gautier, Marc Pallardy
1Aventis Pharma Drug Safety Evaluation, Centre de Recherche de Paris, 13 Quai Jules Guesde 94403, Vitry sur Seine, Paris, France. sandrine.lacour@aventis.com
Abstract:
Several important drug classes show pre-clinical hepatotoxicity or, in some cases hepatotoxicity in man in Phase III/IV not predicted by pre-clinical studies. This hepatotoxicity is associated with death of the parenchyma by both necrosis and apoptosis. Recent data have implicated molecular mediators of the immune response such as tumor necrosis factor alpha (TNFalpha), interleukin 1beta(1L-1beta) and interleukin 6 (IL6) in acute and chronic liver damage. These cytokines networks have been implicated in mediating the hepatic response to xenobiotics as diverse as PPAR ligands, acetaminophen and phenobarbitone. Thus, pro-inflammatory cytokines such as TNFalpha, IL1 beta and IL6 are released into the bloodstream both from the liver and from distal sites during hepatic toxic injury. Probably due to differences in the responses of rodent and human hepatocytes to cytokines, some clinical hepatotoxicities are not predicted by rodent models. However, the cytokine changes implicated in this human hepatic cell death could be manifest in rodent models and thus could be detected at the molecular level. Here we review the role of cytokines in different types of drug-induced liver injury and discuss whether these cytokine fingerprints are potential biomarkers of so-called idiosyncratic human liver toxicity.
Insights
Drug-induced liver injury can cause cell death, but immune system cytokines like tumor necrosis factor alpha (TNFα) may offer predictive biomarkers. These molecular mediators could help identify idiosyncratic liver toxicity not seen in pre-clinical studies.
Area of Science:
- Hepatotoxicity and immunology
- Drug-induced liver injury (DILI)
- Molecular mechanisms of liver damage
Background:
- Some drug classes cause liver toxicity not predicted by pre-clinical models.
- Hepatotoxicity involves parenchymal cell death via necrosis and apoptosis.
- Immune response mediators, including cytokines, are implicated in liver damage.
Purpose of the Study:
- To review the role of cytokines in drug-induced liver injury (DILI).
- To explore cytokine profiles as potential biomarkers for idiosyncratic human liver toxicity.
- To investigate why rodent models may not predict human hepatotoxicity.
Main Methods:
- Review of recent scientific data on drug-induced liver injury.
- Analysis of the role of cytokines (TNFα, IL-1β, IL-6) in mediating hepatic response to xenobiotics.
- Comparison of rodent and human hepatocyte responses to cytokines.
Main Results:
- Pro-inflammatory cytokines are released during toxic liver injury.
- Cytokine networks mediate hepatic responses to various xenobiotics.
- Differences in cytokine response between rodent and human hepatocytes may explain unpredicted clinical toxicities.
Conclusions:
- Cytokine fingerprints could serve as biomarkers for idiosyncratic liver toxicity.
- Understanding cytokine roles may improve prediction of drug-induced liver injury.
- Further research into cytokine changes in rodent models may reveal human toxicity mechanisms.
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