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KMID : 0624620110440120772
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BMB Reports
2011 Volume.44 No. 12 p.772 ~ p.781
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Branched N-glycans and their implications for cell adhesion, signaling and clinical applications for cancer biomarkers and in therapeutics
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Taniguchi Naoyuki
Korekane Hiroaki
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Abstract
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Branched N-glycans are produced by a series of glycosyltransferases including N-acetylglucosaminyltransferases and fucosyltransferases and their corresponding genes. Glycans on specific glycoproteins, which are attached via the action of glycosyltransferases, play key roles in cell adhesion and signaling. Examples of this are adhesion molecules or signaling molecules such as integrin and E-cadherin, as well as membrane receptors such as the EGF and TGFβ receptors. These molecules also play pivotal roles in the underlying mechanism of a variety of disease such as cancer metastasis, diabetes, and chronic obstructive pulmonary disease (COPD). Alterations in the structures of branched N-glycans are also hall marks and are useful for cancer biomarkers and therapeutics against cancer. This mini-review describes some of our recent studies on a functional glycomics approach to the study of branched N-glycans produced by N-acetylglucosaminyltransferases III, IV, V and IX (Vb) (GnT-III, GnT-IV, V and IX (Vb)) and fucosyltransferase 8 (Fut8) and their patho-physiological significance, with emphasis on the importance of a systems glycobiology approach as a future perspective for glycobiology.
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KEYWORD
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Antibody therapy, Branched N-glycans, Cancer biomarker, Growth factor receptors, N-acetylglucosaminyltransferases
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