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Doxycycline induces membrane expression of VE‐cadherin on endothelial cells and prevents vascular hyperpermeability
Author(s) -
Fainaru Ofer,
Adini Irit,
Benny Ofra,
Bazinet Lauren,
Pravda Elke,
D'Amato Robert,
Folkman Judah
Publication year - 2008
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fj.08-110494
Subject(s) - adherens junction , doxycycline , vascular permeability , vascular endothelial growth factor , angiogenesis , medicine , endothelium , ve cadherin , edema , cancer research , endothelial stem cell , pulmonary edema , pathology , immunology , microbiology and biotechnology , lung , cell , chemistry , biology , cadherin , in vitro , biochemistry , antibiotics , vegf receptors
The endothelium lining blood vessels serves as a barrier against vascular hyperpermeability, and its maintenance is critical to organ health. Inflammatory mediators evoke tissue edema by disrupting the expression of membrane junctional proteins, which mediate binding between endothelial cell membranes. Endothelial cell‐cell junctions form a diffusion barrier between the intravascular and interstitial space. To prevent the morbidity and mortality caused by exaggerated vascular permeability associated with pathological states ( e.g. , inflammatory and hypersensitivity disorders, pulmonary edema, traumatic lung injury, cerebral edema resulting from stroke, and others), it is important to develop therapeutic approaches to stabilize these interendothelial junctions. Vascular endothelial growth factor (VEGF), a potent proangiogenic cytokine, was first described as vascular permeability factor (VPF). Doxycycline, a tetracycline derivative, has been shown to inhibit angiogenesis in both humans and animal models. We now report that oral doxycycline prevents VPF/VEGF‐induced vascular permeability, interleukin‐2‐induced pulmonary edema, and delayed‐type hypersensitivity (DTH) in mice. Remarkably, doxycycline also inhibits tumor growth and tumor‐associated vascular hyperpermeability. Finally, we show that doxycycline targets the adherens junction in vascular endothelial cells by inducing the total amount of VE‐cadherin expression while decreasing the degree of its phosphorylation. The potential of doxycyline as a therapeutic inhibitor of vascular hyperpermeability in human clinical conditions is promising and warrants further studies.—Fainaru, O., Adini, I., Benny, O., Bazinet, L., Pravda, E., D'Amato, R., Folkman. J. Doxycycline induces membrane expression of VE‐cadherin on endothelial cells and prevents vascular hyperpermeability. FASEB J. 22, 3728–3735 (2008)