Document Detail

MUC1 and MUC13 differentially regulate epithelial inflammation in response to inflammatory and infectious stimuli.
MedLine Citation:
PMID:  23149663     Owner:  NLM     Status:  Publisher    
The MUC1 cell-surface mucin is highly expressed on the gastric mucosal surface, while MUC13 is highly expressed on the intestinal mucosal surface. Polymorphisms in both MUC1 and MUC13 have been linked to inflammatory bowel diseases. MUC1 can act as a decoy molecule on the apical cell surface of epithelial cells and thereby limit bacterial adherence, infection, and inflammation. In this study, we examined whether and how MUC1 and MUC13 modulate infectious and inflammatory signaling. Using gastrointestinal tissue from Muc1- or Muc13-deficient mice in ex vivo culture, MUC1 small interfering RNA (siRNA) silencing in MKN7 gastric epithelial cells, and MUC13 siRNA silencing in LS513 intestinal epithelial cells, we showed that loss of MUC1 increased chemokine secretion, whereas loss of MUC13 decreased chemokine secretion in response to tumor necrosis factor-α. Anti-inflammatory activity of MUC1 and pro-inflammatory activity of MUC13 were also seen after exposure to pathogens, NOD1 (nucleotide-binding oligomerisation domain-containing protein-1), and Toll-like receptor ligands. MUC1 and MUC13 both regulate chemokine secretion in gastrointestinal epithelial cells through a nuclear factor-κB-dependent pathway, although MUC13 modulation could also involve other pathways. Our studies demonstrate that MUC1 and MUC13 are important components of gastrointestinal homeostasis and that disruption or inappropriate expression of these mucins could predispose to infectious and inflammatory disease and inflammation-induced cancer.Mucosal Immunology advance online publication 14 November 2012; doi:10.1038/mi.2012.98.
Y H Sheng; S Triyana; R Wang; I Das; K Gerloff; T H Florin; P Sutton; M A McGuckin
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-14
Journal Detail:
Title:  Mucosal immunology     Volume:  -     ISSN:  1935-3456     ISO Abbreviation:  Mucosal Immunol     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101299742     Medline TA:  Mucosal Immunol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Immunity, Infection and Inflammation Program, Mater Medical Research Institute, The University of Queensland, Queensland, Australia.
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