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Updated: Jun 6, 2026
The bm12 Inducible Model of Systemic Lupus Erythematosus (SLE) in C57BL/6 Mice
Published on: November 1, 2015
Rethinking the red wolf disease: does Protein S suppress systemic lupus erythematosus clinical activity?
Abstract:
In systemic lupus erythematosus, the forces responsible for disease initiation and self-perpetuation in these clinically heterogeneous populations remain poorly understood. Recent studies of the TAM (Tyro3, Axl and MerTK) family of receptor tyrosine kinases may lead to a better understanding of the fundamental control system responsible for the clearance of apoptotic cells and the regulation of inflammation. In a recent report, serum levels of the TAM ligand, Protein S, was found to correlate with certain disease manifestations and with C3 and C4 levels. Protein S levels could provide a quantitative clinical biomarker but it remains to be determined whether this factor directly affects disease activity.
Insights
Systemic lupus erythematosus (SLE) pathogenesis is unclear. TAM receptor tyrosine kinases and their ligand, Protein S, are implicated in inflammation and apoptotic cell clearance, potentially serving as biomarkers for SLE.
Area of Science:
- Immunology
- Molecular Biology
- Rheumatology
Background:
- Systemic lupus erythematosus (SLE) pathogenesis remains poorly understood, particularly the drivers of disease initiation and perpetuation in heterogeneous patient populations.
- The TAM (Tyro3, Axl, MerTK) family of receptor tyrosine kinases plays a crucial role in apoptotic cell clearance and inflammation regulation.
- Recent research highlights the potential involvement of TAM signaling in autoimmune diseases like SLE.
Discussion:
- Serum levels of Protein S, a TAM ligand, have been observed to correlate with specific disease manifestations in SLE patients.
- Protein S levels also showed correlation with complement component levels (C3 and C4).
- These findings suggest Protein S may act as a quantitative clinical biomarker for SLE.
Key Insights:
- Protein S levels correlate with disease activity and complement levels in SLE.
- The TAM receptor tyrosine kinase pathway is a potential target for understanding SLE.
- Further investigation is needed to confirm Protein S as a direct modulator of SLE activity.
Outlook:
- Protein S warrants further study as a potential diagnostic or prognostic biomarker in SLE.
- Understanding the role of TAM signaling could reveal novel therapeutic strategies for SLE.
- Investigating the direct impact of Protein S on disease activity is crucial for clinical application.
