α(1,2)fucosylation in human colorectal carcinoma

  • Authors:
    • L. Muinelo-Romay
    • E. Gil-Martín
    • A. Fernández-Briera
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  • Published online on: March 1, 2010     https://doi.org/10.3892/ol_00000064
  • Pages: 361-366
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Abstract

Lewisb and Lewisy (Le) antigens are known to be elevated in colorectal tumours. Alterations in the catalytic behaviour of GDP-L-fucose:β-D-galactoside α(1,2)fucosyltransferase [α(1,2)FT, EC: 2.4.1.69], the key enzyme in their synthesis, have been suggested as being responsible for these changes. In particular, an aberrant tumour-specific α(1,2)FT activity that converts Lea and Lex to Leb and Ley determinants, respectively, has been reported in colorectal cancer tissues. To clarify the catalytic function of this enzyme during colorectal tumorigenesis, we analyzed α(1,2)FT activity levels in healthy and tumour colon specimens using different acceptor substrates and determined the kinetic properties of the enzyme. To complete the study, the aberrant Lea/Lex α(1,2)fucosylation was determined in healthy and tumour colorectal tissues. A correlation analysis between the activity levels and various standard clinicopathological features, such as tumour stage, was also carried out to elucidate the role of these activities in tumour progression. The results obtained confirm the enhanced α(1,2)fucosylation in colorectal neoplastic tissues and the importance of the aberrant Lea/Lex α(1,2)FT activity in this increase. However, taking into account the high levels of Lea/Lex fucosylation observed in healthy control tissues, we must rule out the idea of a colorectal tumour-specific α(1,2)FT. On the other hand, no significant association was observed between α(1,2)FT activity levels and the clinicopathological characteristics. Overall, our results suggest that α(1,2)FT activity plays a critical role in the accumulation of Leb and Ley antigens in human colorectal carcinoma.
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March-April 2010
Volume 1 Issue 2

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Muinelo-Romay L, Gil-Martín E and Fernández-Briera A: α(1,2)fucosylation in human colorectal carcinoma . Oncol Lett 1: 361-366, 2010
APA
Muinelo-Romay, L., Gil-Martín, E., & Fernández-Briera, A. (2010). α(1,2)fucosylation in human colorectal carcinoma . Oncology Letters, 1, 361-366. https://doi.org/10.3892/ol_00000064
MLA
Muinelo-Romay, L., Gil-Martín, E., Fernández-Briera, A."α(1,2)fucosylation in human colorectal carcinoma ". Oncology Letters 1.2 (2010): 361-366.
Chicago
Muinelo-Romay, L., Gil-Martín, E., Fernández-Briera, A."α(1,2)fucosylation in human colorectal carcinoma ". Oncology Letters 1, no. 2 (2010): 361-366. https://doi.org/10.3892/ol_00000064