Functionalization of PVC membrane with ss oligonucleotides for a potentiometric biosensor

. 2007 May 15 ; 22 (11) : 2712-7. [epub] 20061222

Jazyk angličtina Země Velká Británie, Anglie Médium print-electronic

Typ dokumentu hodnotící studie, časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/pmid17188488
Odkazy

PubMed 17188488
DOI 10.1016/j.bios.2006.11.014
PII: S0956-5663(06)00549-5
Knihovny.cz E-zdroje

A novel application of a single stranded (ss) oligonucleotide as an active component of polymeric membrane in an ion-selective electrode (ISE) is described. The original oligonucleotides, oligo(dA)(15), modified by cholesterol, triphenylmethyl and hexadecyl derivatives, were immobilized into poly(vinyl chloride) (PVC) membrane using extraction protocol. In parallel, the adsorption protocol was used to immobilize unmodified oligo(dA)(15) on the PVC membrane based on tridodecylmethyammonium chloride (TDDMA(+)Cl(-)). Immobilization of ss oligonucleotide probe through spacer was more effective for the potentiometric detection of the hybridization between complementary oligonucleotides. It was found that cholesterol-oligo(dA)(15) modified membranes were sensitive toward complementary oligo(dT)(15) in the concentration range 2-80 nM at pH 7. An explanation for the detection mechanism is proposed.

Citace poskytuje Crossref.org

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