Premium
Oligonucleotide probes containing polylysine residues for fabrication of DNA chips on various solid surfaces
Author(s) -
Levina Asya,
Pyshnaya Inna,
Repkova Marina,
Rar Vera,
Zarytova Valentina
Publication year - 2007
Publication title -
biotechnology journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.144
H-Index - 84
eISSN - 1860-7314
pISSN - 1860-6768
DOI - 10.1002/biot.200700027
Subject(s) - oligonucleotide , dna , polylysine , combinatorial chemistry , nucleic acid , conjugate , covalent bond , nucleotide , chemistry , materials science , nanotechnology , biochemistry , gene , organic chemistry , mathematical analysis , mathematics
Various materials, such as glass, plastic, metals, etc., are utilized for preparing DNA chips. In each particular case special approaches are used for immobilization of different oligonucleotide derivatives on the solid supports. We describe a general technique for DNA chips preparation on various unmodified surfaces using one type of oligonucleotide derivative, polylysine‐oligonucleotide conjugates (PL‐oligo). A long polyamine spacer in the PL‐oligo conjugates provides a durable irreversible non‐covalent immobilization onto a variety of solid supports and enough distance between oligonucleotides and the surface. The resulting DNA chips were shown to be useful for the detection of PCR DNA fragments and to be sensitive to single nucleotide discrepancies. They represent a promising instrument for revealing genetic diseases, genotyping viruses and bacteria, and for displaying their drug‐resistant strains.