title: CDX2 co-localizes with liver-intestine cadherin in intestinal metaplasia and adenocarcinoma of the stomach.
abstract: CDX2 and liver-intestine (LI)-cadherin are intestine-specific markers and both are physiologically expressed in the small intestine and colon. Recent studies have demonstrated that CDX2 regulates LI-cadherin gene (CDH17) expression in colorectal cancer. The present study investigated the relationship of CDX2 and LI-cadherin expression in gastric cancer. One hundred and nine pairs of tumour and non-cancerous gastric mucosa were collected from gastrectomy specimens. Protein expression levels of CDX2 and LI-cadherin were determined by immunohistochemical staining. Semi-quantitative RT-PCR showed that the mRNAs of both CDX2 and CDH17 were highly expressed in tumour compared with non-cancerous mucosa. Overexpression of CDX2 was significantly associated with CDH17 in gastric adenocarcinoma. Furthermore, the expression of CDX2 and LI-cadherin proteins was strongly coupled in intestinal metaplasia. In conclusion, overexpression of CDH17 is significantly associated with CDX2.
authors.affiliation: Department of Surgery, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong, China.
authors.forename: Samuel
authors.initials: S
authors.lastname: Ko
authors.forename: Kent-Man
authors.initials: KM
authors.lastname: Chu
authors.forename: John Moon-Ching
authors.initials: JM
authors.lastname: Luk
authors.forename: Bonnie Wing-Yan
authors.initials: BW
authors.lastname: Wong
authors.forename: Siu-Tsan
authors.initials: ST
authors.lastname: Yuen
authors.forename: Suet-Yi
authors.initials: SY
authors.lastname: Leung
authors.forename: John
authors.initials: J
authors.lastname: Wong
mesh_terms: D000230:Adenocarcinoma / Q000378:metabolism* / Q000473:pathology; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000235:genetics / Q000378:metabolism*; D000071616:CDX2 Transcription Factor; D015820:Cadherins / Q000235:genetics / Q000378:metabolism*; D018450:Disease Progression; D005260:Female; D018398:Homeodomain Proteins / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D007124:Immunoenzyme Techniques; D008207:Lymphatic Metastasis; D008297:Male; D008679:Metaplasia / Q000378:metabolism; D008875:Middle Aged; D009363:Neoplasm Proteins / Q000235:genetics / Q000378:metabolism; D009367:Neoplasm Staging; D011230:Precancerous Conditions / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics; D020133:Reverse Transcriptase Polymerase Chain Reaction / Q000379:methods; D013270:Stomach / Q000473:pathology; D013274:Stomach Neoplasms / Q000378:metabolism* / Q000473:pathology; D015854:Up-Regulation
chemical_list: D014408:Biomarkers, Tumor; C490584:CDH17 protein, human; D000071616:CDX2 Transcription Factor; C491270:CDX2 protein, human; D015820:Cadherins; D018398:Homeodomain Proteins; D009363:Neoplasm Proteins; D012333:RNA, Messenger