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Visual gene diagnosis of HBV and HCV based on nanoparticle probe amplification and silver staining enhancement
Author(s) -
Wang YeFu,
Pang DaiWen,
Zhang ZhiLing,
Zheng HuZhi,
Cao JunPing,
Shen JunTao
Publication year - 2003
Publication title -
journal of medical virology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 121
eISSN - 1096-9071
pISSN - 0146-6615
DOI - 10.1002/jmv.10379
Subject(s) - oligonucleotide , silver stain , colloidal gold , gene , microbiology and biotechnology , virology , nanoparticle , staining , naked eye , dna , hybridization probe , materials science , biology , detection limit , chemistry , nanotechnology , biochemistry , chromatography , genetics
A visual gene‐detecting technique using nanoparticle‐supported gene probes is described. With the aid of gold nanoparticle‐supported 3′‐end–mercapto‐derivatized oligonucleotide serving as detection probe, and 5′‐end –amino‐derivatized oligonucleotide immobilized on glass surface acting as capturing probe, target DNA was detected visually by sandwich hybridization based on highly sensitive “nano‐amplification” and silver staining. Different genotypes of Hepatitis B and C viruses in the serum samples from infected patients were detected using home‐made HBV, HCV, and HBV/HCV gene chips by the gold/silver nanoparticle staining amplification method. The present visual gene‐detecting technique may avoid limitations with the reported methods, for its high sensitivity, good specificity, simplicity, speed, and cheapness. This technique has potential applications in many fields, especially in multi‐gene detection gene chips coupled with the detection will find applications in clinic. Additionally, resonance Rayleigh light scattering (RLS) spectroscopy is used, for the first time, to judge and monitor the immobilization of gene probes on gold nanoparticle surfaces. J. Med. Virol. 70: 205–211, 2003. © 2003 Wiley‐Liss, Inc.