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Updated: Aug 1, 2025

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Published on: October 25, 2024
Intrinsic STAT4 Expression Controls Effector CD4 T Cell Migration and Th17 Pathogenicity
Ashlyn A Buzzelli1, Ian L McWilliams1, Boyoung Shin1
1Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL.
Signal transducer and activator of transcription 4 (STAT4) is crucial for CD4 T cell migration and pathogenicity in autoimmune central nervous system (CNS) inflammation. STAT4 controls gene expression in Th17 cells, driving autoimmune responses.
Area of Science:
- Immunology
- Neuroimmunology
- Molecular Biology
Background:
- Effector CD4 T cells drive autoimmune chronic inflammatory diseases.
- STAT4 genetic variations link to autoimmune disorder susceptibility.
- The role of STAT4 in Th17 cell pathogenicity is unclear.
Purpose of the Study:
- To investigate the role of STAT4 in CD4 T cell-mediated autoimmune CNS inflammation.
- To elucidate the function of STAT4 in Th17 cell pathogenicity.
Main Methods:
- Mouse models of autoimmune CNS inflammation.
- Transcriptional profiling of Th17 cells.
- Analysis of CD4 T cell migration.
Main Results:
- CD4 T cell-intrinsic STAT4 is essential for inducing autoimmune CNS inflammation in mice.
- STAT4 regulates CD4 T cell migration to the inflamed CNS.
- STAT4 controls >200 genes in Th17 cells, including those involved in IL-23-stimulated pathogenicity.
Conclusions:
- STAT4 plays a critical role in Th17 cell pathogenicity.
- STAT4 is required for Th17 cells to induce autoimmune inflammation.
- STAT4 represents a novel therapeutic target for Th17-mediated autoimmune diseases.
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