Mammaglobin B gene as a novel marker for lymph node micrometastasis in patients with abdominal cancers.
Cancer Lett
; 150(1): 79-84, 2000 Mar 13.
Article
en En
| MEDLINE
| ID: mdl-10755390
ABSTRACT
Mammaglobin B is a recently-isolated gene speculated to belong to the uteroglobin gene family and is overexpressed in primary breast cancers. We investigated mammaglobin B mRNA expression in various cancers of the digestive system. Given the absence of mammaglobin B expression in normal lymph nodes, we also assessed the usefulness of mammaglobin B as a marker for lymph node micrometastases in cancer patients. Mammaglobin B gene transcripts were frequently detected by reverse transcriptase-polymerase chain reaction (RT-PCR) assay in primary tumors of the esophagus (2/3), stomach (7/7), colon (15/15), pancreas (4/6), common bile duct (6/6), cholangioma (2/2) and gall bladder (1/1). Mammaglobin B overexpression was observed in three of 15 cases (20%) of colon cancer, suggesting its possible contribution to colon carcinogenesis. Down-regulated mammaglobin B expression was observed in hepatoma cells in comparison with corresponding non-cancerous livers (3/3). RT-PCR assay of mammaglobin B detected 14 of 15 histologically positive lymph nodes from patients with gastric cancer, colon cancer and cholangioma. Seven of 32 (22%), three of nine (33%), and three of seven (43%) histologically negative nodes from patients with gastric, colon and cholangiocellular carcinoma, respectively, were found to express mammaglobin B mRNA. Our results showed that expression of mammaglobin B was frequently detected in cancers originating in digestive organs, especially adenocarcinomas, and that mammaglobin B gene detected by RT-PCR may be a potentially useful molecular marker for lymph node micrometastases of various digestive organ cancers.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Uteroglobina
/
Neoplasias Abdominales
/
Metástasis Linfática
Límite:
Humans
Idioma:
En
Revista:
Cancer Lett
Año:
2000
Tipo del documento:
Article
País de afiliación:
Japón
Pais de publicación:
IE
/
IRELAND
/
IRLANDA