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Expression of the gut‐enriched Krüppel‐like factor gene during development and intestinal tumorigenesis
Author(s) -
Ton-That Han,
Kaestner Klaus H,
Shields Janiel M,
Mahatanankoon Channing S,
Yang Vincent W
Publication year - 1997
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/s0014-5793(97)01465-8
Subject(s) - krüppel , carcinogenesis , biology , microbiology and biotechnology , gene , embryo , gastrointestinal tract , transcription factor , gene expression , small intestine , genetics , biochemistry
We examined the expression of GKLF (gut‐enriched Krüppel‐like factor), a recently identified zinc finger‐containing transcription factor, in mice during development using the ribonuclease protection assay. In the adult, the level of GKLF transcript is abundant throughout the gastrointestinal tract. Between embryonic days 10 and 19 (E10 and E19) of development, the initial level of whole embryo GKLF transcript is low but begins to rise on E13 and peaks on E17. In the newborn, GKLF transcript level is higher in the colon than in the small intestine although the levels in both organs rise with increasing age. Expression of GKLF was also examined in the intestinal tract of the Min mouse, a model of intestinal tumorigenesis. The level of GKLF transcript is significantly decreased in the intestine of Min mice during a period of tumor formation when compared to age‐matched control littermates. Our findings indicate that GKLF expression correlates with certain periods of gut development and is down‐regulated during intestinal tumorigenesis, suggesting that GKLF may play a role in gut development and/or tumor formation.