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Gas6/TAM Receptors in Systemic Lupus Erythematosus.

Philip L Cohen1, Wen-Hai Shao2

  • 1Section of Rheumatology, Department of Medicine, Temple University, Philadelphia, PA 19140, USA.

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|July 31, 2019
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Summary

Systemic lupus erythematosus (SLE) involves immune dysregulation. TAM receptor tyrosine kinases (RTKs) are crucial for immune homeostasis and may offer therapeutic targets for SLE and lupus nephritis.

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Area of Science:

  • Immunology
  • Molecular Biology
  • Rheumatology

Background:

  • Systemic lupus erythematosus (SLE) is a complex autoimmune disease characterized by immune system dysregulation.
  • The precise mechanisms driving SLE pathogenesis are not fully understood.
  • TAM receptor tyrosine kinases (RTKs) play vital roles in clearing apoptotic cells, maintaining immune homeostasis, and resolving immune responses.

Purpose of the Study:

  • To review the biological functions and signaling pathways of TAM RTKs in the context of SLE and lupus nephritis.
  • To explore the potential of targeting Gas6/TAM pathways for therapeutic interventions in SLE.
  • To discuss the implications of TAM receptor activation and inhibition in managing lupus and lupus nephritis.

Main Methods:

  • Literature review of studies on TAM RTK signaling in autoimmune diseases.
  • Analysis of the role of TAM receptors in immune regulation and apoptotic cell clearance.
  • Examination of evidence linking TAM deficiency to lupus-like conditions.

Main Results:

  • TAM deficiency is associated with the development of lupus-like autoimmune diseases.
  • Activation of TAM receptors results in soluble forms with immunoregulatory functions.
  • Circulating TAM receptors may serve as prognostic biomarkers for SLE and lupus nephritis.

Conclusions:

  • TAM RTKs are integral to immune homeostasis and the resolution of immune responses.
  • Dysregulation of TAM signaling contributes to the pathogenesis of SLE and lupus nephritis.
  • Targeting the Gas6/TAM pathway presents a promising therapeutic strategy for SLE and lupus nephritis.