The peptide nucleic acids (PNAs): introduction to a new class of probes for chromosomal investigation
Identifieur interne : 000215 ( France/Analysis ); précédent : 000214; suivant : 000216The peptide nucleic acids (PNAs): introduction to a new class of probes for chromosomal investigation
Auteurs : Franck Pellestor [France] ; Petra Paulasova [République tchèque]Source :
- Chromosoma [ 0009-5915 ] ; 2004-06-01.
Abstract
Abstract: Peptide nucleic acids (PNAs) are synthetic DNA mimics in which the sugar phosphate backbone is replaced by repeating N-(2-aminoethyl) glycine units linked by an amine bond and to which the nucleobases are fixed. Peptide nucleic acids hybridize with complementary nucleic acids with remarkably high affinity and specificity, essentially because of their uncharged and flexible polyamide backbone. The unique physicochemical properties of PNAs have led to the development of a large variety of biological research assays, and, over the last few years, PNAs have proved their powerful usefulness in genetic and cytogenetic diagnostic procedures. Several sensitive and robust PNA-dependent methods have been designed for modulating polymerase chain reactions, detecting genomic mutation or capturing nucleic acids. The more recent applications of PNA involve their use as molecular hybridization probes. Thus, the in situ detection of several human chromosomes has been reported in various types of tissues.
Url:
DOI: 10.1007/s00412-004-0282-8
Affiliations:
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<front><div type="abstract" xml:lang="en">Abstract: Peptide nucleic acids (PNAs) are synthetic DNA mimics in which the sugar phosphate backbone is replaced by repeating N-(2-aminoethyl) glycine units linked by an amine bond and to which the nucleobases are fixed. Peptide nucleic acids hybridize with complementary nucleic acids with remarkably high affinity and specificity, essentially because of their uncharged and flexible polyamide backbone. The unique physicochemical properties of PNAs have led to the development of a large variety of biological research assays, and, over the last few years, PNAs have proved their powerful usefulness in genetic and cytogenetic diagnostic procedures. Several sensitive and robust PNA-dependent methods have been designed for modulating polymerase chain reactions, detecting genomic mutation or capturing nucleic acids. The more recent applications of PNA involve their use as molecular hybridization probes. Thus, the in situ detection of several human chromosomes has been reported in various types of tissues.</div>
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