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Updated: Mar 31, 2026

Studying TGF-β Signaling and TGF-β-induced Epithelial-to-mesenchymal Transition in Breast Cancer and Normal Cells
Published on: October 27, 2020
Matters of context guide future research in TGFβ superfamily signaling
Rosemary J Akhurst1, Richard W Padgett2
1Helen Diller Family Comprehensive Cancer Center and Department of Anatomy, University of California at San Francisco, San Francisco, CA 94158-9001, USA. rosemary.akhurst@ucsf.edu.
Abstract:
The highly conserved wiring of the SMAD-dependent transforming growth factor β (TGFβ) superfamily signaling pathway has been mapped over the last 20 years after molecular discovery of its component parts. Numerous alternative TGFβ-activated signaling pathways that elicit SMAD-independent biological responses also exist. However, the molecular mechanisms responsible for the renowned context dependency of TGFβ signaling output remains an active and often confounding area of research, providing a prototype relevant to regulation of other signaling pathways. Highlighting discoveries presented at the 9th FASEB meeting, The TGFβ Superfamily: Signaling in Development and Disease (July 12-17th 2015 in Snowmass, Colorado), this Review outlines research into the rich contextual nature of TGFβ signaling output and offers clues for therapeutic advances.
Insights
Transforming growth factor β (TGFβ) signaling, while well-mapped, exhibits complex context-dependent outputs. Research highlights SMAD-independent pathways and offers insights for therapeutic advances in TGFβ superfamily signaling.
Area of Science:
- Molecular Biology
- Cell Signaling
- Developmental Biology
Background:
- The SMAD-dependent transforming growth factor β (TGFβ) superfamily signaling pathway is highly conserved and has been extensively mapped.
- Numerous alternative TGFβ-activated signaling pathways exist, eliciting SMAD-independent biological responses.
Purpose of the Study:
- To review research on the context dependency of TGFβ signaling output.
- To highlight discoveries from the 9th FASEB meeting on TGFβ signaling in development and disease.
- To offer insights for therapeutic advances related to TGFβ signaling.
Main Methods:
- Literature review of research on TGFβ superfamily signaling.
- Analysis of discoveries presented at a FASEB meeting.
- Synthesis of information on SMAD-dependent and SMAD-independent pathways.
Main Results:
- The molecular mechanisms of TGFβ signaling context dependency remain an active research area.
- TGFβ signaling exhibits significant context dependency, influencing biological responses.
- SMAD-independent pathways contribute to the complexity of TGFβ signaling.
Conclusions:
- Understanding the context dependency of TGFβ signaling is crucial for deciphering its biological roles.
- Further research into TGFβ signaling mechanisms can lead to novel therapeutic strategies.
- The TGFβ superfamily signaling pathway serves as a model for understanding other complex signaling networks.
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