CDH13 promoter region is specifically methylated in poorly differentiated colorectal cancer.
It has recently become clear that CDH13 (H-cadherin, T-cadherin) expression is frequently silenced by aberrant methylation in colorectal cancers and adenomas. In this study, we investigated the methylation status of CDH13 gene and detected aberrant promoter methylation in 27 of 84 (32%) colorectal cancers. We then correlated the results with the clinicopathological features of affected patients. We found a significant difference in histology (P=0.0053) when we compared the CDH13 methylation of poorly differentiated colorectal cancers to that of differentiated ones. This result suggested that poorly differentiated colorectal cancers specifically exhibited CDH13 methylation, and since CDH13 might be responsible for selective cell recognition and adhesion, inactivation of CDH13 could lead to the formation of scattered carcinoma cells in these cancers.
Hibi
K
K
Gastroenterological Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8560, Japan. khibi@med.nagoya-u.ac.jp
Nakayama
H
H
Kodera
Y
Y
Ito
K
K
Akiyama
S
S
Nakao
A
A
D015820:Cadherins / Q000235:genetics* / Q000378:metabolism; D002294:Carcinoma, Squamous Cell / Q000235:genetics / Q000378:metabolism; D016022:Case-Control Studies; D002454:Cell Differentiation; D015179:Colorectal Neoplasms / Q000235:genetics* / Q000378:metabolism; D004247:DNA / Q000235:genetics / Q000378:metabolism; D019175:DNA Methylation; D004938:Esophageal Neoplasms / Q000235:genetics / Q000378:metabolism; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D020868:Gene Silencing; D006801:Humans; D008207:Lymphatic Metastasis / Q000235:genetics; D008297:Male; D011401:Promoter Regions, Genetic / Q000235:genetics*; D012313:RNA / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013447:Sulfites / Q000378:metabolism; D014407:Tumor Cells, Cultured
D015820:Cadherins; C099972:H-cadherin; D013447:Sulfites; D012313:RNA; D004247:DNA; C042345:hydrogen sulfite