Sensitive nucleic acid sandwich hybridization assay

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving nucleic acid

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435 911, 435 912, 536 243, 536 2431, 536 2433, C12Q 168, C12P 1934, C07H 2104

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active

057597731

ABSTRACT:
Nucleic acid sandwich hybridization assays are provided that incorporate one or a combination of background reduction steps. Those steps include use of a separate capture probe and separation from immobilized capture probes by cleavage and isolation. A very sensitive assay for RNA targets includes both of those steps, plus RNA binary probes, an RNA-directed RNA ligase and amplification by an RNA-directed RNA polymerase. Kits of reagents for performing assays according to this invention are also provided.

REFERENCES:
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patent: 4775619 (1988-10-01), Ureda
Blok, H.J., Target-Dependent Amplifiable Nucleic Acid Hybridization Probes. 992. Doctoral Thesis. Eindhoven University of Technology, Eindhoven, The Netherlands.
Krinke et al, "The cleavage specificity of RNase III", Nucleic Acids Res. 18(16):4809-4815, 1990.
Haseloff et al, "Simple RNA enzymes with new and highly specific endoribonuclease activities", Nature 334:585-591, Aug. 1988.
Gibco/BRL catalog, "SuperScript(tm) Choice system for cDNA synthesis", pp. 368-369, Feb. 1992.
Chu et al, Nucleic Acids Rev, V. M, N.Y, 1986, pp. 5591-5603.
Barary, Proc. Natl. Acad. Sci., V. 88, Jan. 1991, 189-93.
Matthews et al, Anal. Biochem, V. 169, 1988, 1-2 J.
Landegren et al, Science, v. 241, Aug. 1988, 1077-1080.
Korarska et al, Cell, v. 57 May 5, 1989, 423-31.

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