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Method for capturing a nucleic acid

  • US 5,939,261 A
  • Filed: 06/24/1997
  • Issued: 08/17/1999
  • Est. Priority Date: 06/24/1997
  • Status: Expired due to Fees
First Claim
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1. A method for capturing a class of nucleic acids in a device, the method comprising:

  • a. furnishing a device for relaying liquids in channels comprising the channels and one or more chambers;

    b. combining in a first chamber of the device (1) a population of nucleic acids comprised of nucleic acids of the class and (2) a probe that binds to the class of nucleic acids, the probe having an attachment moiety suitable for attaching to a first substrate on at least one paramagnetic or superparamagnetic microparticle, wherein the probe is a DNA binding protein or a repetitive nucleic acid element;

    c. forming one or more complexes of the probe and the class of nucleic acids;

    d. capturing the class of nucleic acids from the population of nucleic acids in the device by capturing the complex bound to the first substrate via an attachment of the moiety to the first substrate; and

    e. separating the class of nucleic acids bound to the first substrate from the unbound nucleic acids by (1) magnetically retaining the microparticles in one said chamber and moving through at least one of said channels liquid containing the unbound nucleic acids to another said chamber or (2) magnetically moving through at least one of said channels the microparticles from one said chamber to another.

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