Related Experiment Video
Updated: Jan 20, 2026

Technique of Subnormothermic Ex Vivo Liver Perfusion for the Storage, Assessment, and Repair of Marginal Liver Grafts
Published on: August 13, 2014
FGL1 modulates macrophage function and enhances liver repair through LAG3-TNFR1 axis
Yuzhe Wu1, Qinghua Fang2, Yanyun Chen1
1Guangdong Provincial Key Laboratory of New Drug Screening & NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong-Hong Kong-Macao Joint Laboratory for New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, 510515, China.
Fibrinogen-like protein 1 (FGL1) reduces liver inflammation by modulating macrophage function. It suppresses pro-inflammatory signals via LAG3, promoting liver repair in injury models.
Area of Science:
- Immunology
- Hepatology
- Molecular Biology
Background:
- Fibrinogen-like protein 1 (FGL1) is a liver factor interacting with Lymphocyte Activation Gene 3 (LAG3).
- The immunomodulatory role of FGL1 in liver repair is not fully understood.
Purpose of the Study:
- To investigate FGL1's mechanisms in modulating macrophage function during liver injury.
- To determine FGL1's impact on liver repair processes.
Main Methods:
- Acute liver injury (ALI) mouse models were utilized.
- Bone marrow-derived macrophages (BMDMs) were employed to study FGL1 effects.
- Analysis of cytokine production, macrophage polarization, and signaling pathways (NF-κB, TNFR1).
Main Results:
- FGL1 significantly reduced pro-inflammatory cytokine production in liver injury models.
- FGL1 binding to LAG3 downregulated Tumor Necrosis Factor Receptor 1 (TNFR1) and suppressed NF-κB signaling.
- FGL1 promoted M2 macrophage polarization and inhibited M1 activation, enhancing liver regeneration.
Conclusions:
- FGL1 plays a crucial role in resolving liver inflammation and promoting repair by modulating macrophage polarization.
- FGL1 represents a potential therapeutic target for inflammatory liver diseases.
Related Concept Videos
09:29Technique of Subnormothermic Ex Vivo Liver Perfusion for the Storage, Assessment, and Repair of Marginal Liver Grafts
08:10A Simple and Efficient Method to Isolate Macrophages from Mixed Primary Cultures of Adult Liver Cells
08:54Functional Human Liver Preservation and Recovery by Means of Subnormothermic Machine Perfusion
Hypothalamic-Pituitary Axis
10:32Using Q Suture to Enhance Resistance to Gap Formation and Tensile Strength of Repaired Flexor Tendons
09:32Drug-Induced Senescence in Liver Cells Promotes M2 Macrophage Polarization: Implications for Tyrosine Kinase Inhibitor-Associated Hepatotoxicity

