Design of carbohydrate multiarrays




Recently, microarray technology has increasingly been widely applied in glycobiology. This technology has rather evident potential advantages: unlimited number of carbohydrate ligands coated onto one small sized chip, enormously low consumption of both carbohydrate ligands and carbohydrate-binding proteins to be tested, etc. Literature data demonstrate that three approaches are used for glycoarray design. The first one is based on the physical adsorption of glycomolecules on a surface (as in a common ELISA), the second one-on covalent immobilization, and the third one-on a streptavidin-biotin system. In all of the described methods, carbohydrate ligands were placed on chips as a 2D monolayer and high sensitivity was achieved due to fluorescent detection. Notably, a tendency of stepping from model chips toward real multiarrays, where the number of carbohydrate ligands can be up to two hundred, has been observed the last 2 years, this already producing a number of interesting findings when studying carbohydrate-binding proteins.


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