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Usage Information

Adaptive human regulatory T cells: myth or reality?
Lucienne Chatenoud, Jean-François Bach
Lucienne Chatenoud, Jean-François Bach
Published September 1, 2006
Citation Information: J Clin Invest. 2006;116(9):2325-2327. https://doi.org/10.1172/JCI29748.
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Commentary

Adaptive human regulatory T cells: myth or reality?

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Abstract

It is now well established that a distinct subset of T lymphocytes is essential for downregulating immune responses to both endogenous (self) and exogenous antigens. These Tregs are CD4+ and express high levels of CD25 (the α chain of the IL-2 receptor) and the transcription factor Foxp3. The mechanisms determining the lifespan, homeostasis, and in vivo generation of these Tregs are still ill defined. A study by Vukmanovic-Stejic et al. in this issue of the JCI shows that in humans, Tregs are present throughout life but that despite their high throughput, they are short lived (see the related article beginning on page 2423). It is thus unlikely that all CD4+CD25hiFoxp3+ Tregs are generated as a separate lineage in the thymus. The authors propose that during adulthood, Tregs essentially emerge at the periphery from the memory T cell pool.

Authors

Lucienne Chatenoud, Jean-François Bach

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