Detection of DNA or RNA using single molecule arrays and other techniques
First Claim
1. A method for determining a measure of the concentration of DNA or RNA molecules in a sample, comprising:
- fragmenting DNA or RNA from the sample to form fragmented DNA or RNA sequences;
exposing the fragmented DNA or RNA sequences to at least a first type of binding ligand and a second type of binding ligand, wherein at least a portion of the fragmented DNA or RNA associates with at least one of the first type of binding ligand, at least a portion of the fragmented DNA or RNA associates with at least one of the second type of binding ligand, and at least a portion of the fragmented DNA or RNA associates with at least one of the first type of binding ligand and the second type of binding ligand, wherein the first type of binding ligand comprises a first nucleic acid sequence complimentary to a first portion of a sequence contained in the DNA or RNA and second type of binding ligand comprises a second nucleic acid sequence complimentary to a second portion of a sequence contained in the DNA or RNA, wherein the first nucleic acid sequence and the second nucleic acid sequence are different; and
analyzing a portion of the sample from the exposing step to determine a total number of fragmented DNA or RNA sequences associated with (i) the first type of binding ligand, and (ii) the second type of binding ligand, and (iii) both the first type of binding ligand and the second type of binding ligand;
wherein the first type of binding ligand and the second type of binding ligand produce substantially similar signals; and
determining a measure of the concentration of the DNA or RNA molecules in the sample based on the total number of fragmented DNA or RNA sequences determined in the analyzing step.
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Accused Products
Abstract
Described herein are methods and systems for detecting DNA or RNA using single molecules array or other techniques. DNA or RNA from the sample may be fragmented and exposed to a first type of binding ligand and a second type of binding ligand that comprise nucleic acid sequences complimentary at least a portion of a sequence contained in the target DNA or RNA. At least a portion of the fragmented DNA or RNA associates with at least one of the first type of binding ligand and/or the second type of binding ligand, wherein the first type of binding ligand and second type of binding ligand comprises nucleic acid sequences complimentary to a different portions of a sequence contained in the DNA or RNA. A portion of the sample exposed to the binding ligands is analyzed to determine the number of fragmented DNA or RNA sequences.
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Citations
25 Claims
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1. A method for determining a measure of the concentration of DNA or RNA molecules in a sample, comprising:
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fragmenting DNA or RNA from the sample to form fragmented DNA or RNA sequences; exposing the fragmented DNA or RNA sequences to at least a first type of binding ligand and a second type of binding ligand, wherein at least a portion of the fragmented DNA or RNA associates with at least one of the first type of binding ligand, at least a portion of the fragmented DNA or RNA associates with at least one of the second type of binding ligand, and at least a portion of the fragmented DNA or RNA associates with at least one of the first type of binding ligand and the second type of binding ligand, wherein the first type of binding ligand comprises a first nucleic acid sequence complimentary to a first portion of a sequence contained in the DNA or RNA and second type of binding ligand comprises a second nucleic acid sequence complimentary to a second portion of a sequence contained in the DNA or RNA, wherein the first nucleic acid sequence and the second nucleic acid sequence are different; and analyzing a portion of the sample from the exposing step to determine a total number of fragmented DNA or RNA sequences associated with (i) the first type of binding ligand, and (ii) the second type of binding ligand, and (iii) both the first type of binding ligand and the second type of binding ligand;
wherein the first type of binding ligand and the second type of binding ligand produce substantially similar signals; anddetermining a measure of the concentration of the DNA or RNA molecules in the sample based on the total number of fragmented DNA or RNA sequences determined in the analyzing step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification