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Rapid SNP genotyping of tmigd1 gene in Tsaiya duck using lateral flow immunoassay with primer extension and nano-gold
10th Asia-Pacific Biotech Congress
Chih-Wei Lin, Hsiu-Lin Huang and Jui-Chao Kuo
MingDao University, Taiwan National Cheng Kung University, Taiwan
Posters & Accepted Abstracts: J Biotechnol Biomater
Abstract
In this work we firstly proposed lateral-flow assay combined with primer extension (PEXT) and gold nanoparticles to SNP genotyping of tmigd1 gene in Tsaiya duck which has advantages of easy operation, cost effective and time saving. The gold nanoparticles were tailed with thiol-(dT)30 using salt-aging method at 25oC and used as label of lateral-flow assay. The lateral-flow device is mainly composed of test and control zone on the nitrocellulose membrane containing streptavidin and d(A)30, respectively. When the specific SNP exists, the corresponding primers can be extended, and then the reaction product will be able to be captured by streptavidin in the test zone due to the introduction of biotin-dUTP into the reaction product during PEXT. Gold nanoparticles will hybridize with reaction product to make it become visible. Here we reported the optimized parameters of Mg2+ in PEXT reaction and streptavidin on membranes to detect the signal specificity. In addition, it is found that increasing amount of PCR product and PEXT reaction cycle number result in the increase of the signal intensity without observable change of signal specificity.Biography
Chih-Wei Lin is a MS student in Material Science and Engineering at National Cheng-Kung University, Taiwan. He received a BA in Material Science and Engineering at National Cheng-Kung University in 2012. After fulfilling his mandatory military service, he joined the department again as a MS student. His research interests are functionalization of gold nanoparticles, biosensing and lateral-flow assay.
Email: hlhuang@mdu.edu.tw
