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Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Sci+Rep 2015 ; 5 (ä): ä Nephropedia Template TP
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Three-dimensional Nanowire Structures for Ultra-Fast Separation of DNA, Protein and RNA Molecules #MMPMID26073192
Rahong S; Yasui T; Yanagida T; Nagashima K; Kanai M; Meng G; He Y; Zhuge F; Kaji N; Kawai T; Baba Y
Sci Rep 2015[]; 5 (ä): ä PMID26073192show ga
Separation and analysis of biomolecules represent crucial processes for biological and biomedical engineering development; however, separation resolution and speed for biomolecules analysis still require improvements. To achieve separation and analysis of biomolecules in a short time, the use of highly-ordered nanostructures fabricated by top-down or bottom-up approaches have been proposed. Here, we reported on the use of three-dimensional (3D) nanowire structures embedded in microchannels fabricated by a bottom-up approach for ultrafast separation of small biomolecules, such as DNA, protein, and RNA molecules. The 3D nanowire structures could analyze a mixture of DNA molecules (50?1000?bp) within 50?s, a mixture of protein molecules (20?340?kDa) within 5?s, and a mixture of RNA molecules (100?1000?bases) within 25?s. And, we could observe the electrophoretic mobility difference of biomolecules as a function of molecular size in the 3D nanowire structures. Since the present methodology allows users to control the pore size of sieving materials by varying the number of cycles for nanowire growth, the 3D nanowire structures have a good potential for use as alternatives for other sieving materials.