The Th1 chemokine IP-10 in Systemic sclerosis
1Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy.
La Clinica Terapeutica
|December 20, 2014
Summary
Interferon gamma-induced protein 10 (IP-10) is a key chemokine in systemic sclerosis (SSc). High IP-10 levels correlate with severe SSc, indicating its role in disease progression and organ involvement.
Area of Science:
- Immunology
- Rheumatology
- Fibrosis Research
Background:
- The IP-10/CXCR3 axis is implicated in autoimmune diseases and fibrosis, particularly systemic sclerosis (SSc).
- Elevated serum levels of T-helper (Th)1 chemokine IP-10 and Th2 chemokine MCP-1 are observed in newly diagnosed SSc patients.
- High IP-10 values are linked to severe clinical manifestations, including lung and kidney involvement in SSc.
Purpose of the Study:
- To investigate the role of IP-10 as a serologic marker in systemic sclerosis.
- To understand the dynamic changes of IP-10 and MCP-1 during SSc progression.
- To evaluate IP-10's utility in risk stratification for SSc patients.
Main Methods:
- Longitudinal study design tracking chemokine levels in SSc patients.
- Measurement of serum IP-10 and MCP-1 levels at diagnosis and during follow-up.
- In vitro studies on SSc fibroblasts stimulated with cytokines like interferons (IFNs).
Main Results:
- Newly diagnosed SSc patients exhibited high serum IP-10 and MCP-1 levels.
- Higher initial IP-10 levels were associated with more severe clinical phenotypes, including organ involvement.
- IP-10 levels decreased over time, while MCP-1 levels remained stable, suggesting a shift from Th1 to Th2 dominance.
- SSc fibroblasts demonstrated dysregulated IP-10 production in response to IFN stimulation.
- IP-10 was identified as a potential stable serologic marker for severe SSc.
Conclusions:
- The IP-10/CXCR3 axis is crucial in SSc pathogenesis, with IP-10 indicating early Th1 inflammation.
- IP-10 serves as a valuable serologic marker for disease severity and organ involvement in SSc.
- IP-10 may aid in risk stratification for systemic sclerosis patients, irrespective of disease subtype.
Related Concept Videos
01:24T Cell Types and Functions
3.5K
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
3.5K
01:20The JAK-STAT Signaling Pathway
14.2K
Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as SH2...
14.2K