Linked Life Data

18495625

Source:http://linkedlifedata.com/resource/pubmed/id/18495625

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2008-6-16
pubmed:abstractText
SEW2871 is a potent sphingosine-1-phosphate receptor type-1 (S1P(1))-selective agonist that induces peripheral lymphopenia through sequestration of lymphocytes into secondary lymphoid organs, similar to the non-selective sphingosine-1-phosphate (S1P) receptor agonist FTY720. FTY720 has been reported to interfere with human dendritic cell (DC) effector functions and both FTY720 and SEW2871 have been shown to modulate murine DC trafficking in vivo. Little is known about the possible effects of SEW2871 on human and murine DC functions. Here, we demonstrate that in contrast to FTY720, SEW2871 does not induce down-regulation of S1P(1) in human DCs and thus does not exert a functional antagonism at S1P(1). Notably, the compound was found to impair chemotaxis of immature and mature human DCs in vitro, possibly by interfering with the activation of p44/p42 and p38 mitogen-activated protein kinase signaling pathways. Comparative FACS analyses show that SEW2871 mediates CD18 down-regulation on mature human DCs. The influence on DC migration could be confirmed with in vivo assays using BALB/c mice in which SEW2871 impairs the migration of CD11c+ DC and CD207+ Langerhans cells (LC) to the draining lymph nodes (LNs) under inflammatory conditions. These results suggest that the S1P-S1P(1) axis might not only control lymphocyte trafficking but also play a pivotal role in DC migration from the skin to LN.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1460-2377
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
20
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
911-23
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Sphingosine-1-phosphate receptor type-1 agonism impairs blood dendritic cell chemotaxis and skin dendritic cell migration to lymph nodes under inflammatory conditions.
pubmed:affiliation
Division of Nephrology, Department of Internal Medicine, Innsbruck Medical University, Anichstrasse 35, 6020 Innsbruck, Austria.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't