Related Experiment Video
Updated: Jun 12, 2026

Mouse Model of Metabolic Dysfunction-Associated Steatotic Liver Disease with Fibrosis
Published on: July 18, 2025
[Effects of decreased leptin expression on liver fibrosis]
Hai-juan Feng1, Jing Zhu, Liang Pan
1Department of Gastroenterology, the Affiliated Hospital of Nantong University, Nantong Jiangsu Province 226000, China.
Objective:
To study the effects of decreased leptin expression on liver fibrosis.
Methods:
The small interfering RNA, targeting leptin gene, was designed according to the secondary structure of leptin gene. The recombinant plasmids were encapsulated with lipofectamine and then injected into carbon tetrachloride (CCl4) induced rat liver fibrosis models. Leptin and I, III collage were detected by immunohistochemistry and reverse transcription polymerase chain reaction (RT-PCR).
Results:
The mRNA and protein levels of leptin in the fibrotic liver transfected with leptin shRNA were significantly decreased compared with those in controls (P less than 0.01). The depositions of type I and type III collagens were also decreased (P less than 0.01).
Conclusion:
Decreased leptin expression prevents liver fibrosis.
Insights
Decreased leptin expression in rats significantly reduced liver fibrosis and collagen deposition. This finding suggests leptin plays a key role in the development of liver fibrosis.
Area of Science:
- Hepatology
- Molecular Biology
- Genetics
Context:
- Liver fibrosis is a significant health concern with limited treatment options.
- Leptin, a hormone involved in metabolism, has been implicated in fibrotic processes.
- Understanding leptin's role could reveal new therapeutic targets for liver disease.
Purpose:
- To investigate the impact of reducing leptin expression on liver fibrosis.
- To determine if leptin downregulation can ameliorate established liver fibrosis.
Summary:
- Small interfering RNA targeting the leptin gene was used to decrease leptin expression in a rat model of carbon tetrachloride-induced liver fibrosis.
- Leptin messenger RNA and protein levels were significantly reduced in treated rats.
- Deposition of type I and type III collagen, key markers of fibrosis, was also significantly decreased.
Impact:
- This study demonstrates that inhibiting leptin expression can prevent the progression of liver fibrosis.
- Targeting leptin represents a potential therapeutic strategy for managing liver fibrosis and related conditions.
Related Concept Videos
Cirrhosis II: Pathophysiology
Liver Regeneration
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are large...
Effect of Hepatic Disease on Pharmacokinetics: Drug Dosing and Hepatic Blood Flow
Cirrhosis I: Introduction

