KLF4 regulation in intestinal epithelial cell maturation

M. Flandez, S. Guilmeau, P. Blache, Leonard H. Augenlicht

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

The Krüppel-like factor 4 (KLF4) transcription factor suppresses tumorigenesis in gastrointestinal epithelium. Thus, its expression is decreased in gastric and colon cancers. Moreover, KLF4 regulates both differentiation and growth that is likely fundamental to its tumor suppressor activity. We dissected the expression of Klf4 in the normal mouse intestinal epithelium along the crypt-villus and cephalo-caudal axes. Klf4 reached its highest level in differentiated cells of the villus, with levels in the duodenum > jejunum > ileum, in inverse relation to the representation of goblet cells in these regions, the lineage previously linked to KLF4. In parallel, in vitro studies using HT29cl.16E and Caco2 colon cancer cell lines clarified that KLF4 increased coincident with differentiation along both the goblet and absorptive cell lineages, respectively, and that KLF4 levels also increased during differentiation induced by the short chain fatty acid butyrate, independently of cell fate. Moreover, we determined that lower levels of KLF4 expression in the proliferative compartment of the intestinal epithelium are regulated by the transcription factors TCF4 and SOX9, an effector and a target, respectively, of β-catenin/Tcf signaling, and independently of CDX2. Thus, reduced levels of KLF4 tumor suppressor activity in colon tumors may be driven by elevated β-catenin/Tcf signaling.

Original languageEnglish (US)
Pages (from-to)3712-3723
Number of pages12
JournalExperimental Cell Research
Volume314
Issue number20
DOIs
StatePublished - Dec 10 2008

Fingerprint

Catenins
Goblet Cells
Epithelial Cells
Intestinal Mucosa
Colonic Neoplasms
SOX9 Transcription Factor
Neoplasms
Volatile Fatty Acids
Butyrates
Cell Lineage
Jejunum
Ileum
Duodenum
Stomach Neoplasms
Colon
Carcinogenesis
Transcription Factors
Epithelium
Cell Line
Growth

Keywords

  • Differentiation
  • Epithelium
  • Intestine
  • KLF4
  • Sox9
  • Wnt

ASJC Scopus subject areas

  • Cell Biology

Cite this

KLF4 regulation in intestinal epithelial cell maturation. / Flandez, M.; Guilmeau, S.; Blache, P.; Augenlicht, Leonard H.

In: Experimental Cell Research, Vol. 314, No. 20, 10.12.2008, p. 3712-3723.

Research output: Contribution to journalArticle

Flandez, M. ; Guilmeau, S. ; Blache, P. ; Augenlicht, Leonard H. / KLF4 regulation in intestinal epithelial cell maturation. In: Experimental Cell Research. 2008 ; Vol. 314, No. 20. pp. 3712-3723.
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