Abstract
N 1,N 12-diacetylspermine (DiAcSpm) is a minor component of human urine that constitutes less than 0.5% of total polyamine species in human urine. Structurally related polyamines and acetylpolyamines were separated and analyzed by HPLC and gas chromatography, and refinement of these procedures led to the identification of this minor component. Subsequent analyses of urines from cancer patients as well as healthy persons revealed that DiAcSpm is a promising candidate for a novel tumor marker. It is much more sensitive than established tumor markers in detecting colorectal and other cancers, and most importantly, is able to detect 60% of early colorectal cancers confined to mucous membranes. Serum CEA is able to detect only about 10% of colorectal cancers at this stage. Collection of urine is easy and does not give any pain to patients, which adds another merit to urinary DiAcSpm as a tumor marker. DiAcSpm-specific antibodies were then developed for simpler determination of DiAcSpm in urine, and the antibodies were used to construct an ELISA system. More recently, a reagent kit for DiAcSpm determination based on colloidal gold aggregation that can be used with automatic biochemical analyzers was also developed.
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Kawakita, M., Hiramatsu, K., Yanagiya, M., Doi, Y., Kosaka, M. (2011). Determination of N 1,N 12-Diacetylspermine in Urine: A Novel Tumor Marker. In: Pegg, A., Casero, Jr., R. (eds) Polyamines. Methods in Molecular Biology, vol 720. Humana Press. https://doi.org/10.1007/978-1-61779-034-8_23
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DOI: https://doi.org/10.1007/978-1-61779-034-8_23
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