Kurita Tomoko, Thi Thuy Nguyen, Koi Chiho, Murakami Midori, Kagami Seiji, Izumi Hiroto, Hachisuga Toru
Department of Obstetrics and Gynecology, University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan
Department of Obstetrics and Gynecology, University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan.
Anticancer Res. 2017 Jul;37(7):3905-3910. doi: 10.21873/anticanres.11772.
The aberrant glycosylation of mucin type O-glycans is thought to be associated with functional alteration of cancer cells, including adhesive properties, as well as their potential for invasion and metastasis. Positive expression of N-acetylgalactosaminyltransferase-6 (GalNAc-T6) may also be a marker for aberrant O-glycans in carcinogenesis. We previously reported that over-expression of GalNAc-T6 had a strong association with endometrial cell invasion ability in vitro.
This study investigated the relationship between GalNAc-T6 expression and cell adhesion molecules in 218 endometrial carcinomas by immunohistochemistry.
Expression of GalNAc-T6 was found to be significantly related to expression of E-cadherin. Positive expression of GalNAc-T6 was significantly associated with better histological grade and good clinical prognosis of patients, but positive E-cadherin and β-catenin expression were not significantly associated with improved overall survival.
GalNAc-T6 might be related to cell-cell adhesion in the early phase of cancer invasion in endometrial carcinoma.
黏蛋白型O-聚糖的异常糖基化被认为与癌细胞的功能改变有关,包括黏附特性以及它们的侵袭和转移潜能。N-乙酰半乳糖胺基转移酶-6(GalNAc-T6)的阳性表达也可能是癌变过程中异常O-聚糖的一个标志物。我们之前报道过GalNAc-T6的过表达与体外子宫内膜细胞的侵袭能力密切相关。
本研究通过免疫组织化学方法调查了218例子宫内膜癌中GalNAc-T6表达与细胞黏附分子之间的关系。
发现GalNAc-T6的表达与E-钙黏蛋白的表达显著相关。GalNAc-T6的阳性表达与患者较好的组织学分级和良好的临床预后显著相关,但E-钙黏蛋白和β-连环蛋白的阳性表达与总体生存率的改善无显著相关性。
GalNAc-T6可能与子宫内膜癌侵袭早期的细胞间黏附有关。