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Updated: May 20, 2026

Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes
Published on: September 26, 2013
Aiolos promotes TH17 differentiation by directly silencing Il2 expression
Francisco J Quintana1, Hulin Jin, Evan J Burns
1Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA. fquintana@rics.bwh.harvard.edu
Researchers identified a key mechanism controlling T helper 17 (T(H)17) cell development. Aiolos transcription factor actively suppresses interleukin-2 (IL-2) production, promoting T(H)17 cell differentiation and immune responses.
Area of Science:
- Immunology
- Molecular Biology
- Cellular Biology
Background:
- CD4(+) T helper 17 (T(H)17) cells are crucial for pathogen defense but linked to inflammation and autoimmunity.
- Understanding T(H)17 cell development is vital for controlling aberrant immune responses.
- Interleukin-2 (IL-2) inhibits T(H)17 cell differentiation, but the suppression of IL-2 during this process remains unclear.
Purpose of the Study:
- To elucidate the molecular mechanisms suppressing IL-2 production during T(H)17 cell differentiation.
- To identify key transcription factors involved in regulating T(H)17 cell development.
Main Methods:
- Investigated gene expression under T(H)17-polarizing conditions.
- Utilized Aiolos-deficient mice models.
- Performed in vitro and in vivo differentiation assays.
Main Results:
- STAT3 and AhR transcription factors upregulate Aiolos expression during T(H)17 polarization.
- Aiolos acts as a transcriptional repressor, silencing the Il2 locus.
- Aiolos deficiency impairs T(H)17 cell differentiation.
Conclusions:
- Aiolos is a critical transcription factor that actively suppresses IL-2 production during T(H)17 cell differentiation.
- This Aiolos-mediated suppression promotes T(H)17 cell development and function.
- Identified a novel regulatory module controlling T(H)17 cell fate.
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