Methods for rapid purification of nucleic acids for subsequent analysis by mass spectrometry by solution capture
First Claim
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1. A method of purifying a solution comprising a plurality of nucleic acids for subsequent analysis by electrospray mass spectrometry comprising:
- providing amine-terminated magnetic beads, wherein each of said amine-terminated magnetic beads comprises a magnetic bead linked to at least one amine molecule;
combining said amine-terminated magnetic beads with said solution and mixing to yield a suspension of said amine-terminated magnetic beads in said solution, wherein said plurality of nucleic acids bind to said at least one amine molecule on said amine-terminated magnetic beads;
isolating said amine-terminated magnetic beads from said solution;
washing said amine-terminated magnetic beads to remove contaminants with one or more wash buffers while retaining said bound plurality of nucleic acids; and
eluting said one or more plurality of nucleic acids from said amine-terminated magnetic beads with an elution buffer wherein said elution buffer does not comprise a metal cation salt.
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Abstract
The present invention provides a method for rapid solution capture purification of nucleic acids for subsequent analysis by electrospray mass spectrometry which is efficient and cost-effective relative to existing methods. The present invention also provides kits useful for practicing rapid solution capture of nucleic acids so that purified samples are in condition for analysis by electrospray mass spectrometry.
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16 Claims
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1. A method of purifying a solution comprising a plurality of nucleic acids for subsequent analysis by electrospray mass spectrometry comprising:
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providing amine-terminated magnetic beads, wherein each of said amine-terminated magnetic beads comprises a magnetic bead linked to at least one amine molecule; combining said amine-terminated magnetic beads with said solution and mixing to yield a suspension of said amine-terminated magnetic beads in said solution, wherein said plurality of nucleic acids bind to said at least one amine molecule on said amine-terminated magnetic beads; isolating said amine-terminated magnetic beads from said solution; washing said amine-terminated magnetic beads to remove contaminants with one or more wash buffers while retaining said bound plurality of nucleic acids; and eluting said one or more plurality of nucleic acids from said amine-terminated magnetic beads with an elution buffer wherein said elution buffer does not comprise a metal cation salt. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification