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- W3197585788 abstract "ABSTRACT Dynamic modulation of endothelial cell-to-cell and cell-to-extracellular matrix (ECM) adhesion is essential for blood vessel patterning and functioning. Yet, the molecular mechanisms involved in this process have not been completely deciphered. We identify the adhesion G protein-coupled receptor (ADGR) Latrophilin 2 (LPHN2) as a novel determinant of endothelial cell (EC) adhesion and barrier function. In cultured ECs, endogenous LPHN2 localizes at ECM contacts, signals through cAMP/Rap1, and inhibits focal adhesion (FA) formation and nuclear localization of YAP/TAZ transcriptional regulators, while promoting tight junction (TJ) assembly. ECs also express an endogenous LPHN2 ligand, fibronectin-leucine-rich transmembrane 2 (FLRT2), that prevents ECM-elicited EC behaviors in a LPHN2-dependent manner. Vascular ECs of lphn2a knock-out zebrafish embryos become abnormally stretched, display a hyperactive YAP/TAZ pathway, and lack proper intercellular TJs. Consistently, blood vessels are hyperpermeable and intravascularly injected cancer cells extravasate more easily in lphn2a null animals. Thus, LPHN2 ligands, such as FLRT2, may be therapeutically exploited to interfere with cancer metastatic dissemination. SUMMARY Camillo et al. show that the LPHN2 receptor, upon activation by FLRT2 ligand, inhibits focal adhesion formation and promotes tight junction assembly in endothelial cells. Blood vessels of lphn2a null animals are hyperpermeable and injected cancer cells extravasate more easily." @default.
- W3197585788 created "2021-09-13" @default.
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- W3197585788 date "2020-04-28" @default.
- W3197585788 modified "2023-10-01" @default.
- W3197585788 title "LPHN2 inhibits vascular permeability by differential control of endothelial cell adhesion" @default.
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- W3197585788 doi "https://doi.org/10.1101/2020.04.28.065979" @default.
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