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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Increased expression of mRNA specific for thymidine kinase, deoxycytidine kinase or thymidine phosphorylase in human papillary thyroid carcinoma.

The aim of the present study was to estimate the expression of mRNA, specific for thymidine kinase 1 (TK1), deoxycytidine kinase (dCK), and thymidine phosphorylase (dThdPase), i.e. enzymes involved in pyrimidine and purine metabolism in human papillary thyroid carcinoma ( PTC) tissue. Additionally, the expression of dCK was estimated, in medullary thyroid carcinoma (MTC). For control, the RNA expression levels for all the enzymes were measured in macroscopically unchanged thyroid tissue. Reverse transcriptase-polymerase chain reaction (RT-PCR) and densitometry were employed for mRNA expression measurements, with the beta-actin gene as a control housekeeping gene. The levels of mRNA expression for TK1, dCK and dThdPase in human PTC, as well as mRNA expression for dCK in MTC, were significantly higher than mRNA expressions for those enzymes found in macroscopically unchanged thyroid tissue. It is concluded that an increased expression of mRNA, specific for TK1, dCK and dThdPase, may be involved in carcinogenic processes in the human thyroid.[1]


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