2013年10月
CA-S27: A novel Lewis a associated carbohydrate epitope is diagnostic and prognostic for cholangiocarcinoma
Cancer Science
- 巻
- 104
- 号
- 10
- 開始ページ
- 1278
- 終了ページ
- 1284
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1111/cas.12222
Early and specific diagnosis is critical for treatment of cholangiocarcinoma (CCA). In this study, a carbohydrate antigen-S27 (CA-S27) monoclonal antibody (mAb) was established using pooled CCA tissue-extract as immunogen. The epitope recognized by CA-S27-mAb was a new Lewis-a (Lea) associated modification of MUC5AC mucin. A Soybean agglutinin/CA-S27-mAb sandwich ELISA to determine CA-S27 in serum was successfully developed. High level of CA-S27 was detected in serum of CCA patients and could differentiate CCA patients from those of gastro-intestinal cancers, hepatomas, benign hepatobiliary diseases and healthy subjects with high sensitivity (87.5%) and high negative predictive value (90.4%). The level of serum CA-S27 was dramatically reduced after tumor removal, indicating tumor origin of CA-S27. Patients with high serum CA-S27 had significantly shorter survivals than those with low serum CA-S27 regardless of serum MUC5AC levels. Fucosyltransferase-III (FUT3) was shown to be a regulator of CA-S27 expression. Suppression of CA-S27 expression with siRNA-FUT3 or neutralization with CA-S27 mAb significantly reduced growth, adhesion, invasion and migration potentials of CCA cells in vitro. In summary, we demonstrate that serum CA-S27, a novel carbohydrate antigen, has potential as diagnostic and prognostic markers for CCA patients. CA-S27 involves in promoting cell growth, adhesion, migration and invasion of CCA cells. © 2013 Japanese Cancer Association.
- ID情報
-
- DOI : 10.1111/cas.12222
- ISSN : 1347-9032
- ISSN : 1349-7006
- PubMed ID : 23809433
- SCOPUS ID : 84884979119