Methods for simultaneous amplification of target loci
First Claim
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1. A method of amplifying target loci in a nucleic acid sample, the method comprising:
- (a) contacting a sample comprising target loci with a library of at least 50 non-immobilized, non-identical PCR primers that simultaneously hybridize to at least 50 non-identical target loci to produce a reaction mixture; and
(b) subjecting the reaction mixture to PCR conditions to produce amplified products comprising target amplicons;
wherein an annealing temperature for the PCR conditions is greater than a melting temperature for at least 95% of the at least 50 non-identical PCR primers;
wherein a length of an annealing step of the PCR conditions is greater than 5 minutes; and
wherein at least 50 non-identical target loci are simultaneously amplified.
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Abstract
The invention provides methods for simultaneously amplifying multiple nucleic acid regions of interest in one reaction volume as well as methods for selecting a library of primers for use in such amplification methods. The invention also provides library of primers with desirable characteristics, such as minimal formation of amplified primer dimers or other non-target amplicons.
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Citations
20 Claims
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1. A method of amplifying target loci in a nucleic acid sample, the method comprising:
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(a) contacting a sample comprising target loci with a library of at least 50 non-immobilized, non-identical PCR primers that simultaneously hybridize to at least 50 non-identical target loci to produce a reaction mixture; and (b) subjecting the reaction mixture to PCR conditions to produce amplified products comprising target amplicons;
wherein an annealing temperature for the PCR conditions is greater than a melting temperature for at least 95% of the at least 50 non-identical PCR primers;
wherein a length of an annealing step of the PCR conditions is greater than 5 minutes; and
wherein at least 50 non-identical target loci are simultaneously amplified. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of amplifying target loci in a nucleic acid sample, the method comprising:
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(a) contacting a sample comprising target loci with a library of at least 50 non-immobilized, non-identical PCR primers that simultaneously hybridize to at least 50 non-identical target loci to produce a reaction mixture, wherein the sample is derived from blood; and (b) subjecting the reaction mixture to PCR conditions to produce amplified products comprising target amplicons, wherein the annealing temperature for the PCR conditions is greater than a melting temperature for at least 95% of the at least 50 non-identical PCR primers, wherein the melting temperature is a calculated temperature at which one-half of a DNA duplex of a primer and its perfect complement is predicted to dissociate and become single stranded DNA, wherein the length of an annealing step of the PCR conditions is between 5 and 60 minutes, wherein the length of the target amplicons is between 30 and 200 nucleotides, and wherein at least 50 non-identical target human loci are simultaneously amplified. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method of amplifying target loci in a nucleic acid sample, the method comprising:
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(a) contacting a sample comprising target loci with a library of between 10,000 and 100,000 non-immobilized, non-identical PCR primers or primer pairs that simultaneously hybridize to between 10,000 and 100,000 non-identical target loci to produce a reaction mixture, wherein the concentration of each primer in the reaction mixture is less than 20 nM; and (b) subjecting the reaction mixture to PCR conditions to produce amplified products comprising target amplicons, wherein an annealing temperature for the PCR conditions is greater than a melting temperature for at least 95% of primers of the 10,000 to 100,000 non-identical PCR primers or primer pairs, wherein the length of an annealing step of the PCR conditions is between 5 and 60 minutes, and wherein between 10,000 and 100,000 non-identical target loci are simultaneously amplified. - View Dependent Claims (17, 18, 19, 20)
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Specification