Related Experiment Video
Updated: Jun 1, 2026

Studying TGF-β Signaling and TGF-β-induced Epithelial-to-mesenchymal Transition in Breast Cancer and Normal Cells
Published on: October 27, 2020
Structures of TGF-β receptor complexes: implications for function and therapeutic intervention using ligand traps
Andrew P Hinck1, Maureen D O'Connor-McCourt
1Department of Biochemistry, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA. hinck@uthscsa.edu
Transforming growth factor-beta (TGF-β) isoforms are crucial signaling molecules involved in cell growth and development. This review details their structures, receptor interactions, and potential for targeted therapies in diseases like fibrosis and cancer.
Area of Science:
- Molecular Biology
- Cell Signaling
- Structural Biology
Background:
- Transforming growth factor-beta (TGF-β) isoforms (TGF-β1, -β2, -β3) are key signaling ligands.
- They regulate extracellular matrix, cell growth, differentiation, immune function, and organ development.
- Dysregulation of TGF-β signaling is implicated in human diseases like fibrosis and cancer.
Purpose of the Study:
- To review recent advances in characterizing TGF-β isoform structures bound to their receptors.
- To compare these structures with each other and with other superfamily members.
- To explore how structural insights inform distinct isoform functions and therapeutic strategies.
Main Methods:
- Structural biology techniques (e.g., X-ray crystallography, cryo-EM) to determine TGF-β-receptor complexes.
- Biophysical studies to analyze binding affinities and interactions.
- Comparative analysis of structural data across TGF-β isoforms and related proteins.
Main Results:
- Structural and biophysical data highlight the shared evolutionary origins of TGF-β isoforms.
- Specific structural differences explain how isoforms diverge to perform distinct biological roles.
- Understanding isoform-receptor interactions reveals opportunities for targeted therapeutic interventions.
Conclusions:
- Structural characterization of TGF-β isoforms and their receptors provides critical insights into their diverse functions.
- These findings pave the way for developing novel therapeutic strategies, including isoform-specific ligand traps.
- Targeting TGF-β signaling holds promise for treating fibrotic and cancerous diseases.
More Related Videos
06:57Analysis of Transforming Growth Factor ß Family Cleavage Products Secreted Into the Blastocoele of Xenopus laevis Embryos
Published on: July 21, 2021
11:38Visualization and Quantification of TGFβ/BMP/SMAD Signaling under Different Fluid Shear Stress Conditions using Proximity-Ligation-Assay
Published on: September 14, 2021
Related Concept Videos
TGF - β Signaling Pathway
Assembly of Signaling Complexes
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Transducer Mechanism: Enzyme-Linked Receptors
Major types that are helpful drug targets include:
Enzyme-linked Receptors
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...
G Protein-coupled Receptors
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
Ligand Binding Sites
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...