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首页> 外文期刊>Cytokine >FK506 suppresses E-selectin, ICAM-1 and VCAM-1 expression on vascular endothelial cells by inhibiting tumor necrosis factor alpha secretion from peripheral blood mononuclear cells.
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FK506 suppresses E-selectin, ICAM-1 and VCAM-1 expression on vascular endothelial cells by inhibiting tumor necrosis factor alpha secretion from peripheral blood mononuclear cells.

机译:FK506通过抑制外周血单核细胞分泌的肿瘤坏死因子α来抑制血管内皮细胞上E-选择素,ICAM-1和VCAM-1的表达。

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摘要

FK506 suppresses activation of T cells; however, it down-regulates E-selectin, ICAM-1 and VCAM-1 expression in inflamed tissues. In this study, we investigated the effect of FK506 on expression of those adhesion molecules on human vascular endothelial cells (HMVEC). Culture supernatant from peripheral blood mononuclear cells (PBMC) stimulated with anti-CD3 plus anti-CD2 antibodies effectively induced the expression of E-selectin, ICAM-1 and VCAM-1 on HMVEC, and treatment with FK506 down-regulated their expression. Culture supernatant contained tumor necrosis factor (TNF) alpha and interleukin (IL)-1beta, which effectively induced adhesion molecules, and FK506 suppressed both cytokine secretions. TNFalpha content in culture supernatant was parallel to the induction of adhesion molecules by the culture supernatant. IL-1beta content was not enough to induce those adhesion molecules. Anti-TNFalpha antibody completely inhibited those expressions. FK506 did not inhibit either TNFalpha- or IL-1beta-induced expression of adhesion molecules, or viability of HMVEC. These results indicate that FK506 suppresses migration of inflammatory cells through the inhibition of TNFalpha secretion from leukocytes.
机译:FK506抑制T细胞的激活;然而,它下调了发炎组织中的E-选择素,ICAM-1和VCAM-1的表达。在这项研究中,我们研究了FK506对这些粘附分子在人血管内皮细胞(HMVEC)上表达的影响。抗CD3加抗CD2抗体刺激的外周血单核细胞(PBMC)的培养上清液有效诱导E-选择蛋白,ICAM-1和VCAM-1在HMVEC上的表达,并用FK506处理下调了它们的表达。培养上清液中含有有效诱导粘附分子的肿瘤坏死因子(TNF)α和白介素(IL)-1beta,FK506抑制了两种细胞因子的分泌。培养上清液中的TNFα含量与培养上清液对粘附分子的诱导平行。 IL-1β含量不足以诱导那些粘附分子。抗TNFalpha抗体完全抑制了这些表达。 FK506既不抑制TNFα诱导的粘附分子的表达,也不抑制HMVEC的生存力。这些结果表明FK506通过抑制白细胞的TNFα分泌来抑制炎性细胞的迁移。

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