How many cadherins do human endothelial cells express?

Area of Science:

• Vascular biology
• Cell adhesion
• Molecular biology

Background:

• The vasculature, composed of endothelial barriers, is crucial for transporting oxygen, nutrients, and immune cells.
• Endothelial barrier dysfunction is implicated in severe acute and chronic inflammatory diseases.
• Cadherins are calcium-dependent adhesion proteins forming cell-cell junctions, with VE-cadherin and N-cadherin previously studied in endothelial cells.

Purpose of the Study:

• To comprehensively analyze the expression of cadherin superfamily members in mature human endothelium.
• To identify novel cadherins potentially involved in endothelial cell function and vascular homeostasis.
• To explore the potential roles of these newly identified endothelial cadherins.

Main Methods:

• Review of gene and protein expression databases for mature human endothelium.
• Analysis of cadherin expression patterns.
• Integration of data from other cell types, organisms, and experimental models to infer functions.

Main Results:

• At least 24 cadherin superfamily members are significantly expressed in mature human endothelium.
• Identified cadherins have potential functions beyond endothelial cell-cell junction formation.
• Expression of these cadherins suggests roles for planar cell polarity, Hippo pathway, and mitochondria metabolism in vascular homeostasis.

Conclusions:

• Human endothelium expresses a broader range of cadherins than previously recognized.
• These novel endothelial cadherins may have diverse functions impacting vascular homeostasis.
• Further research is needed to define the specific roles of these cadherins and associated pathways in vascular health and disease.