TGF-β Signaling in Control of Cardiovascular Function

Area of Science:

• Cardiovascular Biology
• Molecular Genetics
• Cell Biology

Background:

• Gene mutations affecting transforming growth factor β (TGF-β) signaling are linked to hereditary vascular syndromes like Osler-Rendu-Weber disease and Marfan syndrome.
• Dysregulated TGF-β signaling also contributes to nonhereditary conditions such as atherosclerosis and cardiac fibrosis.

Purpose of the Study:

• To review the multifaceted roles of TGF-β in vascular development and disease.
• To highlight the significance of TGF-β signaling in vasculogenesis, angiogenesis, and lymphangiogenesis.
• To discuss the implications of TGF-β pathway deregulation in cardiovascular pathologies.

Main Methods:

• Review of genetic studies in animals and humans.
• Analysis of cell culture data from endothelial cells and smooth muscle cells (SMCs).
• Examination of TGF-β's effects on cellular processes in various culture models.

Main Results:

• TGF-β critically influences endothelial and SMC proliferation, differentiation, migration, tube formation, and sprouting.
• TGF-β promotes endothelial-to-mesenchymal transition, vital for heart development and vascular pathology.
• Deregulation of TGF-β signaling is implicated in a spectrum of cardiovascular diseases.

Conclusions:

• TGF-β signaling is a central regulator of vascular development and homeostasis.
• Aberrant TGF-β signaling underlies numerous vascular disorders, from hereditary syndromes to acquired diseases.
• Understanding TGF-β's role is key to developing therapeutic strategies for cardiovascular diseases.