Related Experiment Video
Updated: Aug 10, 2026

Adenoviral Transduction of Naive CD4 T Cells to Study Treg Differentiation
Published on: August 13, 2013
Mechanism of transforming growth factor beta-induced inhibition of T helper type 1 differentiation
Leonid Gorelik1, Stephanie Constant, Richard A Flavell
1Yale University School of Medicine, New Haven, CT 06520, USA.
Abstract:
Regulation by transforming growth factor (TGF)-beta plays an important role in immune homeostasis. TGF-beta inhibits T cell functions by blocking both proliferation and differentiation. Here we show that TGF-beta blocks Th1 differentiation by inhibiting the expression of T-bet, the apparent masterregulator of T helper (Th)1 differentiation. Restoration of T-bet expression through retroviral transduction of T-bet into developing Th1 cells abrogated the inhibitory effect of TGF-beta. In addition, we show that, contrary to prior suggestions, downregulation of interleukin 12 receptor beta2 chain is not key to the TGF-beta-mediated effect. Furthermore, we show that the direct inhibitory effect of TGF-beta on T cells is responsible, at least in part, for the inability of BALB/c mice to mount a Leishmania-specific Th1 response and to clear Leishmanial infection.
More Related Videos
Related Concept Videos
Receptor Downregulation in MVBs
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR activation may...
The JAK-STAT Signaling Pathway
TGF - β Signaling Pathway
Forced Transdifferentiation
Artificial transdifferentiation occurs...
T Cell Types and Functions
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Type I Diabetes II: Pathophysiology

