Nanogold-Assisted Multi-Round Polymerase Chain Reaction (PCR)

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We have previously demonstrated that nanogold effectively enhances the specificity and yield of error-prone two-round polymerase chain reaction (PCR). Here we reported that, with the assistance of nanogold, we could perform multi-round PCR. In the presence of appropriate amount of 10 nm nanogold, we could obtain the target product even after six rounds of PCR, as manifested by a single bright band in gel electrophoresis (1% agarose). In fact, we could still observe the target band even at the 7th round of PCR, which nevertheless was accompanied by smearing bands (non-specific amplification). In contrast, in the absence of nanogold, the target band was completely lost only after four rounds of amplification. This marked difference in the performance of multi-round PCR clearly showed that nanogold was a powerful enhancer for PCR. More importantly, with this nanogold-assisted multi-round PCR, it might be possible to produce a large amount of target DNA, or to amply very low copies of genomic DNA from rare sources.


Document Type: Research Article


Publication date: December 1, 2007

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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