Hinweise zu Qualitätskriterien von Zeitschriften
Open-Access-Richtlinie der Helmholtz-Gemeinschaft 2016
CC Licencences
Metriken für Publikationen
Startseite
Login
English
Neuer EVA Antrag
Erweiterte Suche
Durchblättern nach ...
Publikationen im Überblick
HGF Fortschrittsbericht
OA Publikationen
Neue Publikation eintragen
Neue Publikation holen aus...
Fehlende Publikation melden
Ansprechpartner
Hilfe
Bibliometrische Indikatoren
Text
Endnote (RIS)
BibTeX
DOI
PMC
 |
|
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
The satiety factor apolipoprotein A-IV modulates intestinal epithelial permeability through its interaction with alpha-catenin: Implications for inflammatory bowel diseases.
Horm. Metab. Res. 39, 601-611 (2007)
INTRODUCTION: Apolipoprotein A-IV (apoA-IV), an intestinally and cerebrally synthesized satiety factor and anti-atherogenic plasma apolipoprotein, was recently identified as an anti-inflammatory protein. In order to elucidate whether intestinal apoA-IV exerts similar repair function as its hepatic homologue apolipoprotein A-V (apoA-V), apoA-IV-interactive proteins were searched and in vitro functional studies were performed with apoA-IV overexpressing cells. ApoA-IV was also analyzed in the intestinal mucosa of patients with inflammatory bowel diseases (IBD), together with other genes involved in epithelial junctional integrity. METHODS: A yeast-two-hybrid screening was used to identify apoA-IV-interactors. ApoA-IV was overexpressed in Caco-2 and HT-29 mucosal cells for colocalization and in vitro epithelial permeability studies. Mucosal biopsies from quiescent regions of colon transversum and terminal ileum were subjected to DNA-microarray analysis and pathway-related data mining. RESULTS: Four proteins interacting with apoA-IV were identified, including apolipoprotein B-100, alpha1-antichymotrypsin, cyclin C, and the cytosolic adaptor alpha-catenin, thus linking apoA-IV to adherens junctions. Overexpression of apoA-IV was paralleled with a differentiated phenotype of intestinal epithelial cells, upregulation of junctional proteins, and decreased paracellular permeability. Colocalization between alpha-catenin and apoA-IV occurred exclusively in junctional complexes. ApoA-IV was downregulated in quiescent mucosal tissues from patients suffering from IBD. In parallel, only a distinct set of junctional genes was dysregulated in non-inflamed regions of IBD gut. CONCLUSIONS: ApoA-IV may act as a stabilizer of adherens junctions interacting with alpha-catenin, and is likely involved in the maintenance of junctional integrity. ApoA-IV expression is significantly impaired in IBD mucosa, even in non-inflamed regions.
Impact Factor
Scopus SNIP
Altmetric
0.000
0.000
Anmerkungen
Besondere Publikation
Auf Hompepage verbergern
Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Sprache
englisch
Veröffentlichungsjahr
2007
HGF-Berichtsjahr
0
ISSN (print) / ISBN
0018-5043
e-ISSN
1439-4286
Zeitschrift
Hormone and Metabolic Research
Quellenangaben
Band: 39,
Heft: 8,
Seiten: 601-611
Verlag
Thieme
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Pancreatic Islet Research (IPI)
PubMed ID
17712726
Erfassungsdatum
2007-12-31