Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Editorial
. 2001 Mar;123(3):347-9.
doi: 10.1046/j.1365-2249.2001.01470.x.

NF-kappa B may determine whether epithelial cell--microbial interactions in the intestine are hostile or friendly

Editorial

NF-kappa B may determine whether epithelial cell--microbial interactions in the intestine are hostile or friendly

Y R Mahida et al. Clin Exp Immunol. 2001 Mar.
No abstract available

PubMed Disclaimer

Figures

Fig. 1
Fig. 1
A model of NF‐κB activation in intestinal epithelial cells. Pathogenic bacteria and pro‐inflammatory cytokines induce phosphorylation of IκB via the IκB kinase complex. Ubiquitin polypeptides are attached to phosphorylated IκB with its subsequent degradation by the 26S proteasome complex. The active NFκB dimer then migrates to the nucleus and binds to its sequence recognition motif on the promoter region of IL‐8 gene, leading to transcription and translation of the chemokine. Non‐pathogenic bacteria can inhibit IκB degradation by abrogating the polyubiquitination step, and thereby inhibit expression of IL‐8 because NF‐κB is retained in the cytoplasm.

Comment on

References

    1. Mahida YR. Mechanisms of host protection and inflammation in the gastrointestinal tract. J R Coll Physicians Lond. 1997;31:493–7. - PMC - PubMed
    1. Kim JM, Oh YK, Kim YJ, Oh HB, Cho YJ. Polarised secretion of CXC chemokines by human intestinal epithelial cells in response to Bacteroides fragilis enterotoxin: NF-κB plays a major role in the regulation of IL-8 expression. Clin Exp Immunol. 2001;123:419–25. - PMC - PubMed
    1. Sanfilippo L, Li CK, Seth R, Balwin TJ, Menozzi MG, Mahida YR. Bacteroides fragilis enterotoxin induces the expression of IL-8 and transforming growth factor-beta (TGF-beta) by human colonic epithelial cells. Clin Exp Immunol. 2000;119:456–63. - PMC - PubMed
    1. Ghosh S, May MJ, Kopp EB. NF-kappa B and Rel proteins: evolutionarily conserved mediators of immune responses. Annu Rev Immunol. 1998;16:225–60. - PubMed
    1. Karin M, Ben-Neriah Y. Phosphorylation meets ubiquitination: the control of NF-[kappa]B activity. Annu Rev Immunol. 2000;18:621–63. - PubMed

MeSH terms