The bio-complex "reaction pattern in vertebrate cells" reduces cytokine-induced cellular adhesion molecule mRNA expression in human endothelial cells by attenuation of NF-kappaB translocation.
The bio-complex "reaction pattern in vertebrate cells" (RiV) is mainly represented by characteristic exosome-like particles--probably as reaction products of cells to specific stress. The transcription factor NF-kappaB plays a central role in inflammation. We tested the hypothesis that RiV particle preparations (RiV-PP) reduce cellular adhesion molecule (CAM) expression (ICAM-1, VCAM-1, E-selectin) by the attenuation of NF-kappaB translocation in human umbilical vein endothelial cells (HUVEC). After 4 hours, pre-incubation of HUVEC with RiV-PP before stimulation with TNF-alpha significantly reduced ICAM-1 (65.5+/-10.3%) and VCAM-1 (71.1+/-12.3%) mRNA expression compared to TNF-alpha-treated cells (100%, n=7). ICAM-1 surface expression was significantly albeit marginally reduced in RiV/TNF-alpha- treated cells (92.0+/-5.6%, n=4). No significant effect was observed on VCAM-1 surface expression. In RiV/TNF-alpha-treated cells (n=4), NF-kappaB subunits p50 (85.7+/-4.1%) and p65 (85.0+/-1.8%) nuclear translocation was significantly reduced. RiV-PP may exert an anti-inflammatory effect in HUVEC by reducing CAM mRNA expression via attenuation of p50 and p65 translocation.
Rönnau
Cindy
C
Department of Internal Medicine B, University of Greifswald, 17475 Greifswald, Germany.
Liebermann
Herbert E H
HE
Helbig
Franz
F
Staudt
Alexander
A
Felix
Stephan B
SB
Ewert
Ralf
R
Landsberger
Martin
M
D015815:Cell Adhesion Molecules / Q000235:genetics / Q000378:metabolism; D002460:Cell Line; D016207:Cytokines / Q000378:metabolism*; D019040:E-Selectin / Q000235:genetics / Q000378:metabolism; D042783:Endothelial Cells / Q000166:cytology / Q000502:physiology*; D006801:Humans; D051550:I-kappa B Kinase / Q000378:metabolism; D018799:Intercellular Adhesion Molecule-1 / Q000235:genetics / Q000378:metabolism; D046911:Macromolecular Substances / Q000378:metabolism*; D016328:NF-kappa B / Q000235:genetics / Q000378:metabolism*; D019010:Vascular Cell Adhesion Molecule-1 / Q000235:genetics / Q000378:metabolism
D015815:Cell Adhesion Molecules; D016207:Cytokines; D019040:E-Selectin; D046911:Macromolecular Substances; D016328:NF-kappa B; D019010:Vascular Cell Adhesion Molecule-1; D018799:Intercellular Adhesion Molecule-1; D051550:I-kappa B Kinase