Rho-kinase mediates lysophosphatidic acid-induced IL-8 and MCP-1 production via p38 and JNK pathways in human endothelial cells.

Shimada, H., Rajagopalan, L.E.

Journal	FEBS Lett.	Year	2010
Species	Human	Volume	584
Analytes Measured	IL-8, MCP-1	Page #	2827-32
Matrix Tested	HUVEC cell culture supernatants	Category	Phosphoproteins & Intracellular Markers

Abstract

Lysophosphatidic acid (LPA), an inflammatory mediator that is elevated in multiple inflammatory diseases, is a potent activator of Rho kinase (ROCK) signaling and of chemokine production in endothelial cells. In this study, LPA activated ROCK, p38, JNK and NF-kappaB pathways and induced interleukin-8 (IL-8) and monocyte chemotactic protein-1 (MCP-1) mRNA and protein expression in human endothelial cells. We mapped signaling events downstream of ROCK, driving chemokine production. In summary, MCP-1 production was partly regulated by ROCK acting upstream of p38 and JNK and mediated downstream by NF-kappaB. IL-8 production was largely driven by ROCK through p38 and JNK activation, but with no involvement of NF-kappaB.