Scaffolded nucleic acid polymer particles and methods of making and using
First Claim
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1. A method of detecting a nucleotide incorporation, comprising:
- (a) disposing a particle in a reaction chamber including, or capacitively coupled to, a field effect transistor, wherein the particle includes a hydrophillic non-nucleosidic polymer network and a plurality of nucleic acids attached to the non-nucleosidic polymer network, the particle having a coefficient of variance of volume of not greater than 15%, the non-nucleosidic polymer network includes a polyacrylamide gel having a total monomer percentage in a range of 3% to 20% and being permeable to proteins having a size in the range of 50 kilodaltons to 200 kilodaltons;
(b) performing a nucleotide incorporation whereby a nucleotide is incorporated into one or more of the plurality of nucleic acids attached to the polymer network of the particle, and wherein the particle includes a sufficiently high concentration of attached nucleic acids to emit, upon such performing, a pH signal that can be detected by the field effect transistor; and
(c) detecting the pH signal using the field effect transistor, thereby detecting the nucleotide incorporation.
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Abstract
The invention provides particle compositions having applications in nucleic acid analysis. Nucleic acid polymer particles of the invention allow polynucleotides to be attached throughout their volumes for higher loading capacities than those achievable solely with surface attachment. In one aspect, nucleic acid polymer particles of the invention comprise polyacrylamide particles with uniform size distributions having low coefficients of variations, which result in reduced particle-to-particle variation in analytical assays. Such particle compositions are used in various amplification reactions to make amplicon libraries from nucleic acid fragment libraries.
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Citations
19 Claims
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1. A method of detecting a nucleotide incorporation, comprising:
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(a) disposing a particle in a reaction chamber including, or capacitively coupled to, a field effect transistor, wherein the particle includes a hydrophillic non-nucleosidic polymer network and a plurality of nucleic acids attached to the non-nucleosidic polymer network, the particle having a coefficient of variance of volume of not greater than 15%, the non-nucleosidic polymer network includes a polyacrylamide gel having a total monomer percentage in a range of 3% to 20% and being permeable to proteins having a size in the range of 50 kilodaltons to 200 kilodaltons; (b) performing a nucleotide incorporation whereby a nucleotide is incorporated into one or more of the plurality of nucleic acids attached to the polymer network of the particle, and wherein the particle includes a sufficiently high concentration of attached nucleic acids to emit, upon such performing, a pH signal that can be detected by the field effect transistor; and (c) detecting the pH signal using the field effect transistor, thereby detecting the nucleotide incorporation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification