Inactivation of NKX6.3 in the stomach leads to abnormal expression of CDX2 and SOX2 required for gastric-to-intestinal transdifferentiation

Intestinal metaplasia in gastric mucosa is considered a preneoplastic lesion that progresses to gastric cancer. However, the molecular networks underlying this lesion formation are largely unknown. NKX6.3 is known to be an important regulator in gastric mucosal epithelial differentiation. In this st...

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Veröffentlicht in:Modern pathology 2016-02, Vol.29 (2), p.194-208
Hauptverfasser: Yoon, Jung H, Choi, Sung S, Kim, Olga, Choi, Won S, Park, Yong K, Nam, Suk W, Lee, Jung Y, Park, Won S
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container_start_page 194
container_title Modern pathology
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creator Yoon, Jung H
Choi, Sung S
Kim, Olga
Choi, Won S
Park, Yong K
Nam, Suk W
Lee, Jung Y
Park, Won S
description Intestinal metaplasia in gastric mucosa is considered a preneoplastic lesion that progresses to gastric cancer. However, the molecular networks underlying this lesion formation are largely unknown. NKX6.3 is known to be an important regulator in gastric mucosal epithelial differentiation. In this study, we characterized the effects of NKX6.3 that may contribute to gastric intestinal metaplasia. NKX6.3 expression was significantly reduced in gastric mucosae with intestinal metaplasia. The mRNA expression levels of both NKX6.3 and CDX2 predicted the intestinal metaplasia risk, with an area under the receiver operating characteristic curve value of 0.9414 and 0.9971, respectively. Notably, the NKX6.3 expression level was positively and inversely correlated with SOX2 and CDX2, respectively. In stable AGS NKX6.3 and MKN1 NKX6.3 cells, NKX6.3 regulated the expression of CDX2 and SOX2 by directly binding to the promoter regions of both genes. Nuclear NKX6.3 expression was detected only in gastric epithelial cells without intestinal metaplasia. Furthermore, NKX6.3-induced TWSG1 bound to BMP4 and inhibited BMP4-binding activity to BMPR-II. These data suggest that NKX6.3 might function as a master regulator of gastric differentiation by affecting SOX2 and CDX2 expression and the NKX6.3 inactivation may result in intestinal metaplasia in gastric epithelial cells.
doi_str_mv 10.1038/modpathol.2015.150
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However, the molecular networks underlying this lesion formation are largely unknown. NKX6.3 is known to be an important regulator in gastric mucosal epithelial differentiation. In this study, we characterized the effects of NKX6.3 that may contribute to gastric intestinal metaplasia. NKX6.3 expression was significantly reduced in gastric mucosae with intestinal metaplasia. The mRNA expression levels of both NKX6.3 and CDX2 predicted the intestinal metaplasia risk, with an area under the receiver operating characteristic curve value of 0.9414 and 0.9971, respectively. Notably, the NKX6.3 expression level was positively and inversely correlated with SOX2 and CDX2, respectively. In stable AGS NKX6.3 and MKN1 NKX6.3 cells, NKX6.3 regulated the expression of CDX2 and SOX2 by directly binding to the promoter regions of both genes. Nuclear NKX6.3 expression was detected only in gastric epithelial cells without intestinal metaplasia. 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subjects 13/109
14/35
45/15
692/699/1503/1828/1500
Animals
Antigens, Bacterial - genetics
Antigens, Bacterial - metabolism
Area Under Curve
Bacterial Proteins - genetics
Bacterial Proteins - metabolism
Binding Sites
Bone Morphogenetic Protein 4 - genetics
Bone Morphogenetic Protein 4 - metabolism
CDX2 Transcription Factor
Cell Line, Tumor
Cell Transdifferentiation
Cell Transformation, Neoplastic - genetics
Cell Transformation, Neoplastic - metabolism
Cell Transformation, Neoplastic - pathology
Disease Models, Animal
Female
Gastric Mucosa - metabolism
Gastric Mucosa - microbiology
Gastric Mucosa - pathology
Gene Expression Regulation, Neoplastic
Gene Silencing
Genetic Predisposition to Disease
Helicobacter Infections - genetics
Helicobacter Infections - metabolism
Helicobacter Infections - pathology
Helicobacter pylori - genetics
Helicobacter pylori - metabolism
Homeodomain Proteins - genetics
Homeodomain Proteins - metabolism
Humans
Laboratory Medicine
Medicine
Medicine & Public Health
Metaplasia
Mice, Inbred C57BL
original-article
Pathology
Phenotype
Precancerous Conditions - genetics
Precancerous Conditions - metabolism
Precancerous Conditions - microbiology
Precancerous Conditions - pathology
Promoter Regions, Genetic
Proteins - genetics
Proteins - metabolism
Risk Assessment
Risk Factors
RNA, Messenger - genetics
RNA, Messenger - metabolism
ROC Curve
SOXB1 Transcription Factors - genetics
SOXB1 Transcription Factors - metabolism
Stomach Neoplasms - genetics
Stomach Neoplasms - metabolism
Stomach Neoplasms - microbiology
Stomach Neoplasms - pathology
Transcription Factors - genetics
Transcription Factors - metabolism
Transfection
title Inactivation of NKX6.3 in the stomach leads to abnormal expression of CDX2 and SOX2 required for gastric-to-intestinal transdifferentiation
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