1,25-Dihydroxyvitamin D3 inhibits tumor necrosis factor-alpha-induced adhesion molecule expression in endothelial cells.
This study tested the hypothesis that 1,25-dihydroxyvitamin D(3) [1,25(OH)(2)D(3)] plays a role in human umbilical vein endothelial cells (HUVEC) cultures. HUVEC were incubated with 10 or 100 nM 1,25(OH)(2)D(3) for 24 h, in the absence or presence of 40 ng/ml tumor necrosis factor-alpha (TNF-alpha) or 2 ng/ml interleukin-1alpha (IL-1alpha). 1,25(OH)(2)D(3) did not affect HUVEC viability and proliferation, while TNF-alpha, alone or in combination with the hormone, significantly inhibited HUVEC viability. [(3)H]thymidine incorporation in HUVEC treated with TNF-alpha or IL-1alpha significantly decreased, in the absence or in the presence of the hormone, while the levels of vitamin D receptor markedly increased in the presence of 1,25(OH)(2)D(3) alone or associated with TNF-alpha or IL-1alpha, in comparison to the control. The noteworthy increase in protein levels of intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) induced by TNF-alpha was significantly decreased after incubation of the cells with 1,25(OH)(2)D(3), this effect not being seen on E-selectin expression. Neither apoptosis nor nuclear translocation of NF-kappaB, induced in HUVEC by TNF-alpha was influenced by 1,25(OH)(2)D(3) treatment.
Department of Biochemical Sciences, University of Florence, Viale Morgagni 50, 50134 Florence, Italy.
Maria
M
Martinesi
Sara
S
Bruni
Maria
M
Stio
Cristina
C
Treves
D017209:Apoptosis / Q000187:drug effects; D015815:Cell Adhesion Molecules / Q000378:metabolism*; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D004247:DNA / Q000096:biosynthesis; D019040:E-Selectin / Q000378:metabolism; D042783:Endothelial Cells / Q000187:drug effects* / Q000378:metabolism*; D005786:Gene Expression Regulation / Q000187:drug effects*; D006801:Humans; D007375:Interleukin-1 / Q000494:pharmacology; D016328:NF-kappa B / Q000378:metabolism; D011065:Poly(ADP-ribose) Polymerases / Q000378:metabolism; D018167:Receptors, Calcitriol / Q000378:metabolism; D013936:Thymidine / Q000378:metabolism; D014409:Tumor Necrosis Factor-alpha / Q000037:antagonists & inhibitors* / Q000494:pharmacology*; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000494:pharmacology
D015815:Cell Adhesion Molecules; D019040:E-Selectin; D007375:Interleukin-1; D016328:NF-kappa B; D018167:Receptors, Calcitriol; D014409:Tumor Necrosis Factor-alpha; C118756:dihydroxy-vitamin D3; D014807:Vitamin D; D004247:DNA; D011065:Poly(ADP-ribose) Polymerases; D013936:Thymidine