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Hepatocyte-specific Ablation in Zebrafish to Study Biliary-driven Liver Regeneration
Published on: May 20, 2015
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A Temporal Map of Gene Expression Pattern During Zebrafish Liver Regeneration
Urmila Jagtap1,2, Ambily Sivadas1,2, Sandeep Basu1,2
1CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.
Zebrafish
|November 27, 2019
Summary
Zebrafish liver regeneration involves MYC-induced gene expression changes, including oxido-reductase and apoptosis pathways. Key pathways like cholesterol biosynthesis are crucial for liver repair.
Area of Science:
- Molecular biology
- Regenerative medicine
- Zebrafish models
Background:
- Zebrafish are valuable models for studying liver injury and regeneration.
- Molecular mechanisms underlying liver regeneration are not fully understood.
Purpose of the Study:
- To create a zebrafish model of liver injury and regeneration using a metronidazole-inducible system.
- To generate a temporal gene expression map during liver regeneration.
Main Methods:
- Hepatocyte ablation in adult zebrafish using a metronidazole-inducible system (MTZ-nfsb).
- RNA sequencing of liver samples at various injury and regeneration stages.
- Bioinformatic analysis of gene expression data.
Main Results:
- MYC transcription factor is rapidly induced post-injury, activating oxido-reductase and apoptosis pathways.
- Functional genes (complement, bile acid, lipid biosynthesis) are downregulated immediately after injury.
- Cholesterol biosynthesis and protein folding pathways are upregulated by day 6 and return to baseline by day 8.
Conclusions:
- A comprehensive temporal transcriptomic map of zebrafish liver regeneration was established.
- This map provides insights into molecular players and pathways involved in liver repair.
- The findings offer a framework for future research and drug screening for liver regeneration.
