α(M)β(2)-integrin-intercellular adhesion molecule-1 interactions drive the flow-dependent trafficking of Guillain-Barré syndrome patient derived mononuclear leukocytes at the blood-nerve barrier in vitro.

Journal of Cellular Physiology
Nejla Yosef, Eroboghene E Ubogu

Abstract

The mechanisms of hematogenous leukocyte trafficking at the human blood-nerve barrier (BNB) are largely unknown. Intercellular adhesion molecule-1 (ICAM-1) has been implicated in the pathogenesis of Guillain-Barré syndrome (GBS). We developed a cytokine-activated human in vitro BNB model using primary endoneurial endothelial cells. Endothelial treatment with 10 U/ml tissue necrosis factor-α and 20 U/ml interferon-γ resulted in de novo expression of pro-inflammatory chemokines CCL2, CXCL9, CXCL11, and CCL20, with increased expression of CXCL2-3, CXCL8, and CXCL10 relative to basal levels. Cytokine treatment induced/enhanced ICAM-1, E- and P-selectin, vascular cell adhesion molecule-1 and the alternatively spliced pro-adhesive fibronectin variant, fibronectin connecting segment-1 expression in a time-dependent manner, without alterations in junctional adhesion molecule-A expression. Lymphocytes and monocytes from untreated GBS patients express ICAM-1 counterligands, α(M)- and α(L)-integrin, with differential regulation of α(M) -integrin expression compared to healthy controls. Under flow conditions that mimic capillary hemodynamics in vivo, there was a >3-fold increase in total GBS patient and healthy control mononuclear leukocyt...Continue Reading

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Citations

Jun 25, 2013·Trends in Pharmacological Sciences·Mathias ButtmannHans-Peter Hartung
May 3, 2013·Translational Neuroscience·Eroboghene E Ubogu
Aug 15, 2013·Seminars in Cell & Developmental Biology·Dolores D MrukC Yan Cheng
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Jun 29, 2018·Human Vaccines & Immunotherapeutics·Shuang LiuEroboghene Ekamereno Ubogu
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Dec 14, 2018·Tissue Barriers·Chaoling Dong, Eroboghene E Ubogu
May 8, 2020·Journal of Neuroinflammation·Thomas GrüterKalliopi Pitarokoili

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