A High Expression of GDP-Fucose Transporter in Hepatocellular Carcinoma is a Key Factor for Increases in Fucosylation.

A High Expression of GDP-Fucose Transporter in Hepatocellular Carcinoma is a Key Factor for Increases in Fucosylation. Research Abstract Details 

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A High Expression of GDP-Fucose Transporter in Hepatocellular Carcinoma is a Key Factor for Increases in Fucosylation. Abstract Text:

Kenta Moriwaki,Katsuhisa Noda,Takatoshi Nakagawa,Michio Asahi,Harumasa Yoshihara,Naoyuki Taniguchi,Norio Hayashi,Eiji Miyoshi,Kenta Moriwaki,Katsuhisa Noda,Takatoshi Nakagawa,Michio Asahi,Harumasa Yoshihara,Naoyuki Taniguchi,Norio Hayashi,Eiji Miyoshi,Kenta Moriwaki,Katsuhisa Noda,Takatoshi Nakagawa,Michio Asahi,Harumasa Yoshihara,Naoyuki Taniguchi,Norio Hayashi,Eiji Miyoshi,

Changes in the levels of fucosylation regulate the biological phenotype of cancer cells and a specific fucosylation, such as fucosylated alpha-fetoprotein (AFP-L3) has been clinically used as a tumor marker for hepatocellular carcinoma (HCC). However, detailed molecular mechanisms that explain the increased fucosylation in HCC remain unknown despite 10 years of study by these researchers. Fucosylation is regulated by complicated mechanisms that involve several factors: fucosyltransferases, GDP-fucose transporter (GDP-Fuc Tr), and synthetic enzymes of GDP-fucose, such as GDP-mannose 4, 6-dehydratase (GMD), GDP-4-keto-6-deoxy-mannose-3, 5-epimerase-4-reductase (FX), and GDP-fucose pyrophosphorylase. In this study, the expression of fucosylation-related genes in HCC tissues was studied and it was found that GDP-Fuc Tr is a key factor for increases in fucosylation. A real-time reverse transcription polymerase chain reaction (RT-PCR) analysis showed significant increases in GDP-Fuc Tr and FX expression in HCC, and levels of the GMD protein were upregulated by posttranslational modification in HCC tissues. In vitro cell experiments showed that the level of GDP-Fuc Tr was the most significantly correlated with the level of cellular fucosylation and the overexpression of GDP-Fuc Tr dramatically increased fucosylation in Hep3B cells. The importance of GDP-Fuc Tr in the increase of fucosylation was also confirmed with immunohistochemical analyses. These findings suggest that the upregulation of GDP-Fuc Tr plays a pivotal role in increased fucosylation in HCC and represents an attractive target for new treatments and diagnosis for HCC.

A High Expression of GDP-Fucose Transporter in Hepatocellular Carcinoma is a Key Factor for Increases in Fucosylation. Publishing Authors By Initials

K Moriwaki,K Noda,T Nakagawa,M Asahi,H Yoshihara,N Taniguchi,N Hayashi,E Miyoshi,K Moriwaki,K Noda,T Nakagawa,M Asahi,H Yoshihara,N Taniguchi,N Hayashi,E Miyoshi,K Moriwaki,K Noda,T Nakagawa,M Asahi,H Yoshihara,N Taniguchi,N Hayashi,E Miyoshi,

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A High Expression of GDP-Fucose Transporter in Hepatocellular Carcinoma is a Key Factor for Increases in Fucosylation. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Glycobiology

VOLUME: 17

Page Numbers: 1311-20

Journal Abbreviation: Glycobiology

ISSN: 0959-6658

DAY: 20

MONTH: 09

YEAR: 2007

A High Expression of GDP-Fucose Transporter in Hepatocellular Carcinoma is a Key Factor for Increases in Fucosylation. Information

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LANGUAGE: eng

NlmUniqueID: 9104124

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AFFILIATION: Department of Molecular Biochemistry & Clinical Investigation, Osaka University Graduate School of Medicine, 1-7, Yamada-oka, Suita, Osaka 565-0871, Japan.

Country: England

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MEDLINETA: Glycobiology

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