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Updated: Jun 22, 2026
05:25
Extended 78% Hepatectomy in a Mouse Surgical Model
Published on: May 24, 2024
STAT3 mediates protection from liver inflammation after partial hepatectomy
Yan Xu1, Dechun Feng, Ying Wang
1Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiaotong University School of Medicine, Shanghai, China.
Summary
The regenerating liver resists immune attacks, unlike a normal liver. This protection is mainly due to the activation of signal transducer and activator of transcription 3 (STAT3).
Area of Science:
- Hepatology
- Immunology
- Molecular Biology
Background:
- The liver possesses a remarkable capacity for regeneration through hepatocyte proliferation following injury or transplantation.
- Understanding how the immune system interacts with a regenerating liver is crucial for clinical applications.
Purpose of the Study:
- To investigate if a regenerating liver exhibits altered immune responses compared to a quiescent liver.
- To elucidate the underlying molecular mechanisms of immune response modulation during liver regeneration.
Main Methods:
- Partial hepatectomy (PHx) was performed on mice, followed by concanavalin A (ConA) stimulation to assess immune responses.
- Liver damage was evaluated by measuring plasma alanine aminotransferase (ALT) levels, cytokine profiles, and inflammatory infiltration.
- Mechanisms were explored by detecting transcriptional factors, including signal transducer and activator of transcription 3 (STAT3).
Main Results:
- Mice that underwent PHx demonstrated resistance to ConA-induced liver inflammation and injury.
- STAT3 activation was significantly increased 48 hours post-PHx.
- Inhibition of STAT3 using JSI-124 abolished the protective effect, leading to severe liver inflammation upon ConA stimulation.
Conclusions:
- The regenerating liver exhibits resistance to immune-mediated injury, such as that induced by ConA.
- Signal transducer and activator of transcription 3 (STAT3) plays a critical role in protecting the regenerating liver from immune assault.
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