Endothelial cell gap junction (null)

Endothelial cell gap junctions are specialized intercellular channels formed primarily by the assembly of connexin proteins—most notably connexin 37, connexin 40, and connexin 43—that connect adjacent endothelial cells. These structures enable direct cytoplasmic exchange of ions, second messengers, metabolites, and small peptides between neighboring cells. This form of communication is essential for maintaining vascular homeostasis by coordinating responses such as vasodilation/constriction across the endothelium and with underlying smooth muscle cells. Gap junction-mediated signaling also plays roles in angiogenesis, immune surveillance within the tumor microenvironment via antigenic peptide transfer to T cells, regulation of inflammation, and response to injury. While individual connexins can be considered therapeutic targets in certain contexts (e.g., cardiovascular disease), "endothelial cell gap junction communication" itself refers to a physiological process rather than a discrete druggable target molecule. Note: The entry "Endothelial cell gap junction communication" is not itself a canonical molecular target but describes an important cellular process mediated by multiple protein components. For structured data purposes it should be mapped either to its principal molecular constituents (connexins) or reclassified under biological processes rather than therapeutic targets.

Other names

Gap junction in endothelial cellEndothelial gap junction communicationEndothelial GJIC (gap junction intercellular communication)

Modulation of intercellular signaling by altering permeability to ions and small molecules through connexins