tetano
Editor, Senior Moderator
Biosens Bioelectron. 2012 Jan 8. [Epub ahead of print]
Integrated microdevice of reverse transcription-polymerase chain reaction with colorimetric immunochromatographic detection for rapid gene expression analysis of influenza A H1N1 virus.
Kim YT, Chen Y, Choi JY, Kim WJ, Dae HM, Jung J, Seo TS.
Source
Department of Chemical and Biomolecular Engineering (BK21 Program), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Korea.
Abstract
An integrated microdevice of a reverse transcription-polymerase chain reaction (RT-PCR) reactor and an immunochromatographic strip was constructed for colorimetric detection of gene expression of influenza A virus subtype H1N1. An RT-PCR cocktail, which included Texas Red-labeled primers, dNTP including biotin-labeled dUTP, and RNA templates of influenza A H1N1 virus, was filled in the PCR chamber through the micropump, and the RT-PCR was performed to amplify the target H1 gene (102bp). The resultant amplicons bearing biotin moieties and Texas Red haptens were subsequently eluted to the immunochromatographic strip, in which they were first conjugated with the gold nanoparticle labeled anti-hapten antibody in the conjugation pad, and then captured on the streptavidin coated test line through the biotin-streptavidin interaction. By observing a violet color in the test line which was derived from the gold nanoparticle, we confirmed the H1N1 target virus. The entire process on the integrated microdevice consisting of a micropump, a 2μL PCR chamber, and an immunochromatographic strip was carried out on the portable genetic analyzer within 2.5h, enabling on-site colorimetric pathogen identification with detection sensitivity of 14.1pg RNA templates.
Copyright ? 2011 Elsevier B.V. All rights reserved.
PMID:
22265877
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/22265877
Integrated microdevice of reverse transcription-polymerase chain reaction with colorimetric immunochromatographic detection for rapid gene expression analysis of influenza A H1N1 virus.
Kim YT, Chen Y, Choi JY, Kim WJ, Dae HM, Jung J, Seo TS.
Source
Department of Chemical and Biomolecular Engineering (BK21 Program), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Korea.
Abstract
An integrated microdevice of a reverse transcription-polymerase chain reaction (RT-PCR) reactor and an immunochromatographic strip was constructed for colorimetric detection of gene expression of influenza A virus subtype H1N1. An RT-PCR cocktail, which included Texas Red-labeled primers, dNTP including biotin-labeled dUTP, and RNA templates of influenza A H1N1 virus, was filled in the PCR chamber through the micropump, and the RT-PCR was performed to amplify the target H1 gene (102bp). The resultant amplicons bearing biotin moieties and Texas Red haptens were subsequently eluted to the immunochromatographic strip, in which they were first conjugated with the gold nanoparticle labeled anti-hapten antibody in the conjugation pad, and then captured on the streptavidin coated test line through the biotin-streptavidin interaction. By observing a violet color in the test line which was derived from the gold nanoparticle, we confirmed the H1N1 target virus. The entire process on the integrated microdevice consisting of a micropump, a 2μL PCR chamber, and an immunochromatographic strip was carried out on the portable genetic analyzer within 2.5h, enabling on-site colorimetric pathogen identification with detection sensitivity of 14.1pg RNA templates.
Copyright ? 2011 Elsevier B.V. All rights reserved.
PMID:
22265877
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/22265877