Ultrasensitive DNA chip: gene expression profile analysis without RNA amplification

We have developed a new DNA chip whose substrate has a unique minute columnar array structure made of plastic. The DNA chip exhibits ultrahigh sensitivity, up to 100-fold higher than that of reference DNA chips, which makes it possible to monitor gene expression profiles even with very small amounts...

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Bibliographic Details
Published in:Journal of biochemistry (Tokyo) Vol. 139; no. 4; p. 697
Main Authors: Nagino, Kunihisa, Nomura, Osamu, Takii, Yuki, Myomoto, Akira, Ichikawa, Makiko, Nakamura, Fumio, Higasa, Masashi, Akiyama, Hideo, Nobumasa, Hitoshi, Shiojima, Satoshi, Tsujimoto, Gozoh
Format: Journal Article
Language:English
Published: England 01.04.2006
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ISSN:0021-924X
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Summary:We have developed a new DNA chip whose substrate has a unique minute columnar array structure made of plastic. The DNA chip exhibits ultrahigh sensitivity, up to 100-fold higher than that of reference DNA chips, which makes it possible to monitor gene expression profiles even with very small amounts of RNA (0.1-0.01 microg of total RNA) without amplification. Differential expression ratios obtained with the new DNA chip were validated against those obtained with quantitative real-time PCR assays. This novel microarray technology would be a powerful tool for monitoring gene expression profiles, especially for clinical diagnosis.
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ISSN:0021-924X
DOI:10.1093/jb/mvj086