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. 1999 Jul 15;163(2):553-7.

Cutting edge: combined treatment of TNF-alpha and IFN-gamma causes redistribution of junctional adhesion molecule in human endothelial cells (V体育平台登录)

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  • PMID: 10395639

Cutting edge: combined treatment of TNF-alpha and IFN-gamma causes redistribution of junctional adhesion molecule in human endothelial cells

H Ozaki (V体育官网) et al. J Immunol. .

VSports - Abstract

Proinflammatory cytokines such as TNF-alpha and IFN-gamma induce cell adhesion molecules in endothelial cells and promote transmigration of leukocytes across endothelial cells. However, when those two were administered together, leukocyte transmigration paradoxically decreased. We cloned a human and bovine homologue of the junctional adhesion molecule (JAM), a novel molecule at the tight junction, and examined the effects of proinflammatory cytokines on JAM in HUVECs VSports手机版. The combined treatment of TNF-alpha plus IFN-gamma caused a disappearance of JAM from intercellular junctions. However, flow cytometry, cell ELISA, and subcellular fractionation analysis demonstrated that the amount of JAM was not reduced. This suggested that JAM changed its distribution in response to proinflammatory cytokines. This redistribution of JAM might be involved in a decrease in transendothelial migration of leukocytes at inflammatory sites. .

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