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Different expression of glucose transporters in the progression of intrahepatic cholangiocarcinoma.

Abstract：

:Glucose transporter (GLUT)-1 is expressed in malignant tumors and correlated with poor outcome in several cancers. Biliary intraepithelial neoplasia (BilIN) is considered to be a precursor or a noninvasive lesion of invasive cholangiocarcinoma. We examined GLUT-1 and GLUT-2 expression in 149 intrahepatic cholangiocarcinomas and 39 BilINs immunohistochemically and evaluated their correlation with clinicopathological findings and patient outcome in intrahepatic cholangiocarcinoma. Furthermore, we examined the role of GLUT-1 on migration and invasion of cholangiocarcinoma cells using GLUT-1 siRNA. In intrahepatic cholangiocarcinoma, GLUT-1 expression was frequently observed near the necrotic areas, whereas GLUT-2 expression tended to be observed in adenocarcinoma of large bile ducts. Compared with the GLUT-1-negative group, the GLUT-1-positive group showed significantly larger tumor size (P = .0031), poor differentiation (P < .0001), frequent lymphatic invasion (P = .0031) and lymph node metastasis (P < .0001), and high HIF-1α expression (P = .0297). GLUT-2 expression was significantly correlated with good differentiation (P = .0015), perihilar location (P < .0001), perineural invasion (P = .0049), and lymph node metastasis (P = .0248). The patients with GLUT-1-positive tumors showed poor disease related survival (P < .0001). The numbers of migrating and invading cells were significantly decreased in GLUT-1 siRNA transfectants of cholangiocarcinoma cells. Although, GLUT-1 was expressed in all grades of BilINs, GLUT-2 was expressed only in high-grade BilINs. Our results suggest that GLUT-1 expression correlates aggressive behavior and poor prognosis, and that GLUT-1 might be a therapeutic target of cholangiocarcinoma. GLUT-2 expression may be associated with cholangiocarcinogenesis of large bile duct and is a helpful marker for detecting high-grade BilIN lesions in atypical bile ducts.

journal_name

Hum Pathol

journal_title

Human pathology

authors

Kubo Y,Aishima S,Tanaka Y,Shindo K,Mizuuchi Y,Abe K,Shirabe K,Maehara Y,Honda H,Oda Y

doi

10.1016/j.humpath.2014.03.008

subject

Has Abstract

pub_date

2014-08-01 00:00:00

pages

1610-7

issue

8

eissn

0046-8177

issn

1532-8392

pii

S0046-8177(14)00137-3

journal_volume

45

pub_type

杂志文章

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