Id2 Determines Intestinal Identity through Repression of the Foregut Transcription Factor Irx5 | Zendy

Kentaro Mori | Zendy; Harumi Nakamura | Zendy; Hisanori Kurooka | Zendy; Hitoshi Miyachi | Zendy; Kota Tamada | Zendy; Manabu Sugai | Zendy; Toru Takumi | Zendy; Yoshifumi Yokota | Zendy

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Id2 Determines Intestinal Identity through Repression of the Foregut Transcription Factor Irx5

Author(s) -

Kentaro Mori,

Harumi Nakamura,

Hisanori Kurooka,

Hitoshi Miyachi,

Kota Tamada,

Manabu Sugai,

Toru Takumi,

Yoshifumi Yokota

Publication year - 2018

Publication title -

molecular and cellular biology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.14

H-Index - 327

eISSN - 1067-8824

pISSN - 0270-7306

DOI - 10.1128/mcb.00250-17

Subject(s) - foregut , biology , cdx2 , intestinal epithelium , epithelium , midgut , endoderm , transcription factor , respiratory epithelium , goblet cell , microbiology and biotechnology , intestinal metaplasia , gastrointestinal epithelium , cancer research , cellular differentiation , homeobox , genetics , gene , anatomy , cancer , botany , larva

The cellular components and function of the gastrointestinal epithelium exhibit distinct characteristics depending on the region, e.g., stomach or intestine. How these region-specific epithelial characteristics are generated during development remains poorly understood. Here, we report on the involvement of the helix-loop-helix inhibitor Id2 in establishing the specific characteristics of the intestinal epithelium. Id2 -/- mice developed tumors in the small intestine. Histological analysis indicated that the intestinal tumors were derived from gastric metaplasia formed in the small intestine during development. Heterotopic Id2 expression in developing gastric epithelium induced a fate change to intestinal epithelium. Gene expression analysis revealed that foregut-enriched genes encoding Irx3 and Irx5 were highly induced in the midgut of Id2 -/- embryos, and transgenic mice expressing Irx5 in the midgut endoderm developed tumors recapitulating the characteristics of Id2 -/- mice. Altogether, our results demonstrate that Id2 plays a crucial role in the development of regional specificity in the gastrointestinal epithelium.

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