Cited by 74Inflammatory Bowel DiseaseCell death mechanisms and regulationNF-κB Signaling Pathways

Hydroxylase Inhibition Abrogates TNF-α–Induced Intestinal Epithelial Damage by Hypoxia-Inducible Factor-1–Dependent Repression of FADD

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Hindryckx, Pieter, De Vos, Martine, Jacques, Peggy, Ferdinande, Liesbeth, Peeters, Harald, Olievier, Kim, Bogaert, Sara, Brinkman, Brigitta +3 more·2010·The Journal of Immunology

Abstract

Hydroxylase inhibitors stabilize hypoxia-inducible factor-1 (HIF-1), which has barrier-protective activity in the gut. Because the inflammatory cytokine TNF-α contributes to inflammatory bowel disease in part by compromising intestinal epithelial barrier integrity, hydroxylase inhibition may have beneficial effects in TNF-α–induced intestinal epithelial damage. The hydroxylase inhibitor dimethyloxalylglycin (DMOG) was tested in a murine model of TNF-α–driven chronic terminal ileitis. DMOG-treated mice experienced clinical benefit and showed clear attenuation of chronic intestinal inflammation compared with that of vehicle-treated littermates. Additional in vivo and in vitro experiments revealed that DMOG rapidly restored terminal ileal barrier function, at least in part through prevention of TNF-α–induced intestinal epithelial cell apoptosis. Subsequent transcriptional studies indicated that DMOG repressed Fas-associated death domain protein (FADD), a critical adaptor molecule in TNFR-1-mediated apoptosis, in an HIF-1α–dependent manner. Loss of this FADD repression by HIF-1α-targeting small interfering RNA significantly diminished the antiapoptotic action of DMOG. Additional molecular studies led to the discovery of a previously unappreciated HIF-1 binding site in the FADD promoter, which controls repression of FADD during hypoxia. As such, the results reported in this study allowed the identification of an innate mechanism that protects intestinal epithelial cells during (inflammatory) hypoxia, by direct modulation of death receptor signaling. Hydroxylase inhibition could represent a promising alternative treatment strategy for hypoxic inflammatory diseases, including inflammatory bowel disease.

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Authors
Hindryckx, P., De Vos, M., Jacques, P., Ferdinande, L., Peeters, H., Olievier, K., Bogaert, S., Brinkman, B., Vandenabeele, P., Elewaut, D., & Laukens, D.
Affiliations
  • Ghent University (BE)
  • Department of Gastroenterology, Ghent University , Zwijnaarde ,
  • Vlaams Instituut voor Biotechnologie (BE)
Corresponding author
  • Hindryckx, Pieter
  • Peeters, Harald
  • Olievier, Kim
  • Bogaert, Sara
  • Laukens, Debby
Venue
The Journal of Immunology
Published
2010-11
Volume
185
Issue
10
Pages
6306-6316
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W2098087741
Cited by
73
References
56
Citations by year
2026: 3 · 2025: 1 · 2024: 3 · 2023: 3 · 2022: 2 · 2021: 6 · 2020: 2 · 2019: 5 · 2018: 4 · 2017: 5 · 2016: 8 · 2015: 7 · 2014: 4 · 2013: 10 · 2012: 5
FWCI
3.61
Type
journal article
Language
en
Open access
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • Ghent University Academic Bibliography (Ghent University) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Inflammatory Bowel Disease
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
Keywords
HIF-1, HIF-1α, FADD, TNF-α, intestinal epithelial barrier, intestinal epithelial cell apoptosis, death receptor signaling, inflammatory bowel disease, terminal ileitis, hypoxia, intestinal inflammation
MeSH terms
Amino Acids, Dicarboxylic, Animals, Enzyme Inhibitors, Enzyme-Linked Immunosorbent Assay, Gene Expression Regulation, Humans, Mixed Function Oxygenases, Ileitis, Immunohistochemistry, Intestinal Mucosa, Mice, Inbred C57BL, Mice, Mutant Strains, Promoter Regions, Genetic, Tumor Necrosis Factor-alpha, Blotting, Western, Cell Hypoxia, Immunity, Mucosal, Reverse Transcriptase Polymerase Chain Reaction, Chromatin Immunoprecipitation, Mice, Hypoxia-Inducible Factor 1, alpha Subunit, Fas-Associated Death Domain Protein

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