Electrochemical genoassay design for allele-specific detection of toll-like receptor-2 gene polymorphism
Küçük Resim Yok
Tarih
2007
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley-V C H Verlag Gmbh
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
An allele-specific voltammetric genoassay for the detection of allele-specific toll-like receptor-2 gene arg753gln polymorphism (TLR-2) from polymerase chain reaction (PCR) amplified real samples was described in this study. Meldola blue (MDB), an intercalator molecule, was used as hybridization label. The wild-type and mutant type oligonucleotide probes were immobilized onto disposable graphite electrode surfaces by covalent attachment method. The extent of hybridization between probe and target sequences was determined by using differential pulse voltammetry (DPV). As a result of the interaction between MDB and DNA at electrode surface, the MDB signal observed from probe sequence before hybridization and after hybridization with MM sequence is lower than that observed after hybridization with complementary sequence. The differences between the MDB reduction peaks obtained from probe modified, hybrid modified and MM modified electrode were used to detect TLR-2 from PCR amplified real samples. The discrimination of homozygous and heterozygous alleles was also established by comparing the peak currents of MDB reduction signals. Numerous factors affecting the target hybridization and indicator binding reactions are optimized to maximize the sensitivity.
Açıklama
Anahtar Kelimeler
electrochemical genosensor, intercalation, toll-like receptors, polymorphism, polymerase chain reaction
Kaynak
Electroanalysis
WoS Q Değeri
Q1
Scopus Q Değeri
Q2
Cilt
19
Sayı
18
