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Liver fibrosis is a wound-healing response to chronic liver injury, characterized by excessive extracellular matrix deposition, hepatic stellate cell activation, inflammatory remodeling, and progressive disruption of liver architecture. When fibrosis advances, it can lead to cirrhosis, portal hypertension, hepatic insufficiency, and increased risk of hepatocellular carcinoma. Major causes include chronic viral hepatitis, alcohol-associated liver disease, metabolic dysfunction-associated steatohepatitis, cholestatic liver disease, drug-induced liver injury, and autoimmune liver disorders. Early fibrosis may be clinically silent, while advanced cirrhosis can present with ascites, variceal bleeding, jaundice, coagulopathy, encephalopathy, and liver failure. The global disease burden remains high because fibrosis progression is often slow, heterogeneous, and difficult to reverse once cirrhosis is established.
Current management focuses on removing the underlying cause, controlling inflammation and metabolic risk factors, and managing cirrhotic complications. However, approved direct antifibrotic therapies remain limited, and many candidate compounds fail because of insufficient translational efficacy or safety concerns. Zebrafish liver fibrosis models provide a rapid in vivo system for studying hepatic injury, stellate cell activation, collagen deposition, inflammatory signaling, and antifibrotic drug response. They are particularly useful for early screening, hepatoprotective efficacy evaluation, pathway validation, and prioritization before rodent studies.
We offer chemical-induced, alcohol-induced, metabolic, and genetically accelerated liver fibrosis configurations:
| Model Name | Induction Method | Features |
|---|---|---|
| TAA-Induced Zebrafish Liver Fibrosis Model | Zebrafish embryos or larvae are exposed to thioacetamide during defined developmental stages, commonly starting after liver formation. Exposure is maintained for several days under controlled concentration and renewal conditions, followed by compound co-treatment or post-induction treatment. | One of the most widely used zebrafish liver fibrosis models. It induces liver injury, reduced liver size, extracellular matrix deposition, collagen accumulation, and upregulation of fibrosis-related genes such as col1a1, acta2, and tgfb. Suitable for antifibrotic drug screening and mechanism studies. |
| Ethanol-Induced Fibrotic Liver Injury Model | Zebrafish larvae or juveniles are exposed to defined concentrations of ethanol for acute or repeated exposure periods. The model can be combined with recovery phases to assess liver repair, regeneration, or antifibrotic intervention. | Relevant for alcohol-associated liver injury and early fibrogenic responses. Useful for evaluating oxidative stress, hepatocyte injury, inflammatory activation, collagen deposition, and liver regeneration after injury. |
| Steatohepatitis-Associated Liver Fibrosis Model | Zebrafish are subjected to metabolic stress, such as high-fat / high-calorie feeding, overfeeding protocols, or steatosis-inducing conditions. Fibrosis-related phenotypes are assessed after sustained liver lipid accumulation and inflammatory injury. | Suitable for MASLD / MASH-related fibrosis research. The model links hepatic steatosis, metabolic inflammation, oxidative stress, and fibrogenic signaling, supporting hepatoprotective and metabolic intervention studies. |
| Genetic or Transgenic Fibrosis-Related Liver Disease Model | Disease progression is induced or accelerated using liver-specific transgenic lines, disease-associated gene expression, or pathway-modified zebrafish, sometimes combined with chemical injury such as TAA. | Useful for mechanism-focused projects involving chronic liver injury, viral protein-associated liver disease, stellate cell activation, cirrhosis-like progression, or fibrosis-to-HCC transition. Best suited for customized research rather than routine screening. |
Inflammation, Oxidative Stress & Safety
Hepatic Injury & Liver Morphology
Stellate Cell Activation & Fibrogenic Signaling
Fibrosis & Extracellular Matrix Deposition
TAA-induced zebrafish embryo model for liver fibrosis and therapeutic response. This study established a zebrafish embryo liver fibrosis model using thioacetamide. TAA exposure increased fibrosis-related gene expression, including collagen-related and stellate cell activation markers, and induced extracellular matrix deposition detected by Sirius Red staining.
Fig. 1. TAA treatment induces liver fibrosis in zebrafish embryos (van der Helm D, Groenewoud A,
et al., 2018).
Ethanol-induced fibrotic liver injury model for regeneration studies. This protocol described an ethanol-induced zebrafish fibrotic liver model designed to study liver injury and progenitor cell-mediated hepatocyte regeneration. Zebrafish were exposed to ethanol to induce hepatic injury and fibrotic changes, followed by analysis of liver morphology, histological features, and regeneration-associated responses. The model is useful for alcohol-associated liver disease research and for studying the interaction between injury, fibrosis, and hepatic repair.
Fig. 2. Development of an ethanol-induced fibrotic liver model in larval zebrafish (Huang M, Xu J,
et al., 2016).
Start Your Zebrafish Liver Fibrosis Study
Our zebrafish liver fibrosis and cirrhosis models support early-stage antifibrotic drug discovery, hepatoprotective efficacy testing, chronic liver injury research, and mechanism-of-action studies.
References
For research use only. Not intended for any clinical use.
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