Alpha-oxo semicarbazone peptide or oligodeoxynucleotide microarrays.

Bioconjug Chem 2003 Mar-Apr;14(2):430-9

UMR CNRS 8525, Biological Institute of Lille, 1 rue du Pr Calmette 59021 Lille France.

We describe in this paper the preparation and characterization of semicarbazide glass slides and their use for the fabrication of microarrays using site-specific alpha-oxo semicarbazone ligation. The functional density and homogeneity of the semicarbazide glass slides were optimized by analyzing the reactivity of the layer toward a synthetic glyoxylyl fluorescent probe. Oligonucleotide microarrays were prepared by site-specific immobilization of glyoxylyl oligodeoxynucleotides. The slides were directly used in the hybridization assays using fluorescence detection and displayed a significant gain in sensibility as compared to the aldehyde glass slide/amino oligodeoxynucleotide chemistry. Semicarbazide slides were also used for the immobilization of a biotinylated peptide alpha-oxo aldehyde. The peptide microarrays allowed model interaction studies with streptavidin or an anti-biotin antibody.

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http://dx.doi.org/10.1021/bc025571qDOI Listing
November 2003
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