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A Familial Hypercholesterolemia Human Liver Chimeric Mouse Model Using Induced Pluripotent Stem Cell-derived Hepatocytes
Published on: September 15, 2018
The genetics of complex cholestatic disorders.
Gideon M Hirschfield1, Roger W Chapman, Tom H Karlsen
1Centre for Liver Research, National Institute for Health Research Biomedical Research Unit, University of Birmingham, Birmingham, England.
Gastroenterology
|April 16, 2013
Summary
Genetic studies reveal key factors in cholestatic liver diseases. Variants in transporter genes like ABCG8 are linked to gallstones, while immune-related genes are associated with primary biliary cirrhosis and sclerosing cholangitis.
Area of Science:
- Hepatology
- Genetics
- Immunology
Background:
- Cholestatic liver diseases result from diverse insults, involving complex genetic and environmental interactions.
- Pathogenic mechanisms of specific cholestatic diseases remain poorly understood, hindering patient management.
- Recent genome-wide studies offer new insights into gallstone, primary biliary cirrhosis, and primary sclerosing cholangitis pathogenesis.
Purpose of the Study:
- To review recent genetic findings in cholestatic liver diseases.
- To highlight the role of genetic variants in disease development and progression.
- To identify potential therapeutic targets based on genetic associations.
Main Methods:
- Review of recent genome-wide association studies (GWAS) and genetic research.
- Analysis of genetic variants in genes encoding hepatobiliary transporters (e.g., ABCG8, ABCB11, ABCB4).
- Examination of associations between cholestatic diseases and genes involved in immune regulation (e.g., MHC, IL12, STAT4).
Main Results:
- A variant in ABCG8 is a risk factor for gallstone disease, affecting cholesterol excretion.
- Variants in ABCB11 and ABCB4 are linked to cholestasis by altering bile composition.
- Primary biliary cirrhosis and primary sclerosing cholangitis are associated with major histocompatibility complex genes and immune/microbial sensing pathways.
Conclusions:
- Genetic discoveries are advancing the understanding of cholestatic liver disease pathogenesis.
- Targeting identified gene products presents a promising avenue for therapeutic development.
- Further research involving animal models, clinical stratification, and environmental factors is crucial.
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