Abstract
The sialic acid nucleoside conjugate KI-8110 has been shown to inhibit the formation of hepatic metastases from human colorectal cancer cell lines in a nude mouse intrasplenic injection model. The compound does not inhibit sialyltransferases from either human colorectal tumor cells or human liver. Transport of CMP-sialic acid into endoplasmic reticulum and Golgi vesicles is inhibited and can account for the reduction in surface sialic acid found on treated cell lines. Only a 50% inhibition of CMP-sialic acid transport could be achieved suggesting the presence of more than one transport protein with differing specificities.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Binding, Competitive
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Biological Transport / drug effects
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Colorectal Neoplasms / metabolism*
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Cytidine Monophosphate / pharmacology
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Cytidine Monophosphate N-Acetylneuraminic Acid / metabolism*
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Glycosides / pharmacology*
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Humans
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Liver / drug effects
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Liver / metabolism*
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Microsomes / enzymology
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Microsomes, Liver / enzymology
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Sialyltransferases / antagonists & inhibitors*
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Sialyltransferases / metabolism
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Tumor Cells, Cultured
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Uridine / analogs & derivatives*
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Uridine / pharmacology
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beta-D-Galactoside alpha 2-6-Sialyltransferase
Substances
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Glycosides
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Cytidine Monophosphate N-Acetylneuraminic Acid
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KI 8110
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Sialyltransferases
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Cytidine Monophosphate
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Uridine
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beta-D-Galactoside alpha 2-6-Sialyltransferase