CONSTANT CLUSTER SEEDING
First Claim
1. A method of amplifying polynucleotides, comprising:
- (a) providing a plurality of oligonucleotides immobilised to a solid support, wherein the plurality of oligonucleotides comprises first oligonucleotide species comprising a capture sequence and second oligonucleotide species comprising an amplification sequence, wherein the first oligonucleotide species are immobilised on the solid support at a lower density than the second oligonucleotide species;
(b) applying a plurality of template polynucleotide molecules to the solid support under conditions wherein the template polynucleotide molecules hybridise to the capture sequence of the first oligonucleotide species but do not hybridise to the second oligonucleotide species;
(c) extending the first oligonucleotide species to generate polynucleotide complements of the template polynucleotide molecules, wherein the polynucleotide complements are immobilised on the solid support; and
(d) amplifying the polynucleotide complements under conditions wherein the polynucleotide complements hybridize to the amplification sequences of the second oligonucleotide species.
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Abstract
The invention provides methods for controlling the density of different molecular species on the surface of a solid support. A first mixture of different molecular species is attached to a solid support under conditions to attach each species at a desired density, thereby producing a derivatized support having attached capture molecules. The derivatized support is treated with a second mixture of different molecular species, wherein different molecular species in the second mixture bind specifically to the different capture molecules attached to the solid support. One or more of the capture molecules can be reversibly modified such that the capture molecules have a different activity before and after the second mixture of molecular species are attached. In particular embodiments, the different molecular species are nucleic acids that are reversibly modified to have different activity in an amplification reaction.
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Citations
15 Claims
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1. A method of amplifying polynucleotides, comprising:
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(a) providing a plurality of oligonucleotides immobilised to a solid support, wherein the plurality of oligonucleotides comprises first oligonucleotide species comprising a capture sequence and second oligonucleotide species comprising an amplification sequence, wherein the first oligonucleotide species are immobilised on the solid support at a lower density than the second oligonucleotide species; (b) applying a plurality of template polynucleotide molecules to the solid support under conditions wherein the template polynucleotide molecules hybridise to the capture sequence of the first oligonucleotide species but do not hybridise to the second oligonucleotide species; (c) extending the first oligonucleotide species to generate polynucleotide complements of the template polynucleotide molecules, wherein the polynucleotide complements are immobilised on the solid support; and (d) amplifying the polynucleotide complements under conditions wherein the polynucleotide complements hybridize to the amplification sequences of the second oligonucleotide species. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 14, 15)
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- 11. The method of claim B, wherein the reversible blocking group comprises a self-complementary hairpin structure.
Specification