Linked Life Data

19328825

Source:http://linkedlifedata.com/resource/pubmed/id/19328825

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-3
pubmed:dateCreated
2009-6-29
pubmed:abstractText
The human cathelicidin LL-37 is involved in innate immune responses, angiogenesis and wound healing. Functions in maintenance and re-establishment of intestinal barrier integrity have not been characterized yet. Following direct and indirect stimulation of human colonic HT-29 and Caco-2 cells with LL-37 the cellular viability, rate of apoptosis, proliferation and wound healing were determined. Expression of mucins and growth factors was quantified by real-time PCR and Western blotting. Direct application of LL-37 stimulated migration in Caco-2 cells expressing the proposed LL-37 receptor P2X7. Intestinal epithelial cell (IEC) proliferation was not altered. Indirectly, LL-37 significantly enhanced IEC migration via release of growth factors from subepithelial fibroblasts and IEC. Furthermore, LL-37 induced the expression of protective mucins in IEC and abated tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) induced apoptosis in IEC. LL-37 induced signaling is mediated in part by the P2X7 receptor, the epidermal growth factor receptor and the p38 mitogen-activated protein kinase (MAPK). LL-37 contributes to maintenance and re-establishment of the intestinal barrier integrity via direct and indirect pathways. These features, in addition to its known antimicrobial properties, suggest an important role for this peptide in intestinal homeostasis.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1873-1686
pubmed:author
pubmed:issnType
Electronic
pubmed:day
7
pubmed:volume
156
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
104-17
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Effects of the cathelicidin LL-37 on intestinal epithelial barrier integrity.
pubmed:affiliation
Department of Internal Medicine I, St. Josef-Hospital, Ruhr-University, Bochum, Germany. jan-michel.otte@rub.de
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't