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Elevation of nucleocytoplasmic β-N-acetylglucosaminidase (O-GlcNAcase) activity in thyroid cancers

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Single N-acetylglucosamine residues attached by O-linkage to serine or threonine (O-GlcNAc) are an abundant, dynamic and inducible post-translational modification of cytoplasmic and nuclear proteins. This study analyzes the activity of the enzyme involved in the removal of these sugar residues, i.e. β-N-acetylglucosaminidase (O-GlcNAcase) as well as the level of O-GlcNAc in benign and malignant thyroid lesions. Our results demonstrate increased activity of the enzyme in thyroid cancers in comparison to non-neoplastic lesions and adenomas. O-GlcNAc-modified proteins in thyroid cells have a predominantly nuclear distribution and are more abundant in non-neoplastic lesions than in tumors. Understanding the aberrant O-GlcNAc metabolism in thyroid cancer cells may be helpful for developing new diagnostic or treatment methods.
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Document Type: Research Article

Affiliations: Department of Cytobiochemistry, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland., Email: [email protected]

Publication date: April 1, 2010

More about this publication?
  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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