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CXC chemokine IP-10: a key actor in liver disease?
Lin-Jiao Chen1, Juan Lv1, Xiao-Yu Wen1
1Department of Hepatology, The First Hospital, Jilin University, Changchun, 130021, China.
Insights
Interferon-γ-inducible protein 10 (IP-10), a key chemokine in liver disease, recruits T cells and influences inflammation and fibrosis. Understanding IP-10's dual roles offers potential for new liver disease therapies.
Area of Science:
- Immunology
- Hepatology
- Molecular Biology
Background:
- Interferon-γ-inducible protein 10 (IP-10), also known as C-X-C motif chemokine (CXCL10), is a non-ELR CXC chemokine.
- IP-10 binds to CXCR3, recruiting CXCR3+ T cells to the liver and playing a critical role in liver disease pathogenesis.
- Hepatocytes and liver sinusoidal endothelium are primary sources of IP-10.
Purpose of the Study:
- To review recent advancements in the understanding of IP-10's function in liver diseases.
- To highlight the clinical significance and therapeutic potential of IP-10 in liver pathology.
Main Methods:
- Literature review of studies investigating IP-10 in liver disease.
- Analysis of IP-10's molecular interactions and functional roles.
- Correlation of IP-10 levels with disease severity and treatment outcomes.
Main Results:
- Distinct IP-10 isoforms (long vs. short) exhibit opposing functions: pro-inflammatory vs. protective.
- Elevated IP-10 levels correlate with liver inflammation, fibrosis, acute graft rejection, and anti-HCV therapy failure.
- IP-10 is implicated in the progression of various liver conditions, including HCV and HIV/HCV co-infection.
Conclusions:
- IP-10 is a significant factor in liver disease development and progression.
- IP-10 exhibits potential as a prognostic biomarker for liver disease severity.
- Targeting IP-10 presents a promising therapeutic strategy for liver disease patients.
Abstract:
Interferon-γ-inducible protein 10 (IP-10), or C-X-C motif chemokine (CXCL10), is a small cytokine belonging to the non-ELR CXC chemokine family. By binding to its specific receptor CXCR3, IP-10 recruits activated CXCR3+ T cells to the liver parenchyma and plays a pivotal role in liver disease initiation and progression. IP-10 is mainly secreted by hepatocytes and liver sinusoidal endothelium. Different IP-10 forms exert different functions: long-length IP-10 directs CXCR3+ T cell migration and is associated with inflammation, while short IP-10 is a CXCR3 antagonist, thereby playing protective role in liver injury. IP-10 levels are positively associated with the severity of liver inflammation, fibrosis stage and acute graft rejection. High IP-10 levels are closely related to anti-HCV therapy failure. Thus, IP-10 may be both a potential prognostic tool and a therapeutic target for the treatment of patients with HCV or HIV/HCV co-infection. The purpose of this review is to highlight the growing advances in basic knowledge and clinical interest of IP-10 in liver disease.
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