A structured chitosan-based platform for biomolecule attachment to solid surfaces: Application to DNA microarray preparation

Clarissa Consolandi, Marco Severgnini, Bianca Castiglioni, Roberta Bordoni, Andrea Frosini, Cristina Battaglia, Luigi Rossi Bernardi, Gianluca De Bellis

Research output: Contribution to journalArticle

Abstract

A structured chemical platform based on chitosan, an amine-rich polysaccharide, is presented as an alternative chemistry to functionalize solid support (in this case, glass slides) for grafting biomolecules. This approach has been adopted for generating arrays using amino-modified oligonucleotides with two different lengths (25-mer and 70-mer) for different purposes. Results using these chitosan-activated surfaces indicate high oligonucleotide loading capacity, good availability to hybridization against targets, and effectiveness in enzyme-mediated single nucleotide polymorphism (SNP) detection procedures by DNA polymerase and DNA ligase enzymes with low background. Universal arrays have been prepared and extensively used with excellent results in different applications. The chitosan-treated surfaces were also evaluated for their performance in a gene expression experiment.

Original languageEnglish
Pages (from-to)371-377
Number of pages7
JournalBioconjugate Chemistry
Volume17
Issue number2
DOIs
Publication statusPublished - Mar 2006

ASJC Scopus subject areas

  • Chemistry(all)
  • Organic Chemistry
  • Clinical Biochemistry
  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry

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    Consolandi, C., Severgnini, M., Castiglioni, B., Bordoni, R., Frosini, A., Battaglia, C., Bernardi, L. R., & De Bellis, G. (2006). A structured chitosan-based platform for biomolecule attachment to solid surfaces: Application to DNA microarray preparation. Bioconjugate Chemistry, 17(2), 371-377. https://doi.org/10.1021/bc050285a