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Cited by 286

The DOI matches its Crossref record; 40 of the 40 references it cites were found in a registry or an index.

The Paneth Cell α-Defensin Deficiency of Ileal Crohn’s Disease Is Linked to Wnt/Tcf-4

Wehkamp, Jan, Wang, Guoxing, Kübler, Irmgard, Nuding, Sabine, Gregorieff, Alex, Schnabel, Anke, Kays, Robert J, Fellermann, Klaus, Burk, Oliver, Schwab, Matthias, Clevers, Hans, Bevins, Charles L, Stange, Eduard F·2007·The Journal of Immunology

Abstract

Ileal Crohn′s disease (CD), a chronic mucosal inflammation, is characterized by two pertinent features: a specific decrease of Paneth cell-produced antimicrobial α-defensins and the presence of mucosal-adherent bacteria. A mutation in NOD2, the muramyl dipeptide recognition receptor, is found in some patients, which leads to an even more pronounced α-defensin decrease. However, the underlying mechanism remains unclear for the majority of patients. In this study, we report a reduced expression in ileal CD of the Wnt-signaling pathway transcription factor Tcf-4, a known regulator of Paneth cell differentiation and α-defensin expression. Within specimens, the levels of Tcf-4 mRNA showed a high degree of correlation with both HD5 and HD6 mRNA. The levels of Tcf-4 mRNA were decreased in patients with ileal disease irrespective of degree of inflammation, but were not decreased in colonic CD or ulcerative colitis. As a functional indicator of Tcf-4 protein, quantitative binding analysis with nuclear extracts from small intestine biopsies to a Tcf-4 high-affinity binding site in the HD-5 and HD-6 promoters showed significantly reduced activity in ileal CD. Furthermore, a causal link was shown in a murine Tcf-4 knockout model, where the comparably reduced expression of Tcf-4 in heterozygous (+/−) mice was sufficient to cause a significant decrease of both Paneth cell α-defensin levels and bacterial killing activity. Finally, the association between Paneth cell α-defensins and Tcf-4 was found to be independent of the NOD2 genotype. This new link established between a human inflammatory bowel disease and the Wnt pathway/Tcf-4 provides a novel mechanism for pathogenesis in patients with ileal CD.

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Metadata

Authors
Wehkamp, J., Wang, G., Kübler, I., Nuding, S., Gregorieff, A., Schnabel, A., Kays, R. J., Fellermann, K., Burk, O., Schwab, M., Clevers, H., Bevins, C. L., & Stange, E. F.
Venue
The Journal of Immunology
Published
2007-09-01
Volume
179
Issue
5
Pages
3109-3118
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W2112567807
Cited by
286
References
40
FWCI
11.89
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: The Paneth Cell α-Defensin Deficiency of Ileal Crohn’s Disease Is Linked to Wnt/Tcf-4. https://app.cochat.ai/papers/10.4049/jimmunol.179.5.3109
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Wehkamp, J., Wang, G., Kübler, I., Nuding, S., Gregorieff, A., Schnabel, A., Kays, R. J., Fellermann, K., Burk, O., Schwab, M., Clevers, H., Bevins, C. L., & Stange, E. F. (2007). The Paneth Cell α-Defensin Deficiency of Ileal Crohn’s Disease Is Linked to Wnt/Tcf-4. The Journal of Immunology. https://doi.org/10.4049/jimmunol.179.5.3109

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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