Random array of micro-spheres for the analysis of nucleic acids
First Claim
1. A method of identifying biological samples comprising:
- providing a microarray including a substrate having no preselected sites for association with micro-spheres wherein providing comprises coating said substrate with a composition including a population of micro-spheres dispersed in a fluid containing gelatin and immobilizing said micro-spheres in a single layer of single micro-spheres at random positions and at a uniform density on the substrate, at least one sub-population of said population of micro-spheres containing an optical barcode generated from at least one colorant associated with the micro-spheres and wherein said microspheres have a biological probe attached thereto;
contacting said microarray with a biological target sample;
detecting the optical barcode of said sub-population of micro-spheres due to the interaction of said biological probe and said biological target sample; and
identifying said biological sample.
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Abstract
A method of identifying nucleic acid samples comprising: providing a mircoarray including a substrate coated with a composition including a population of micro-spheres dispersed in a fluid containing a gelling agent or a precursor to a gelling agent and immobilized at random positions on the substrate, at least one sub-population of said population micro-spheres containing an optical barcode generated from at least one colorant associated with the micro-spheres and including a nucleic acid probe sequence; contacting said array with a target nucleic acid sequence; and detecting the color barcode of said sub-population of micro-spheres due to the interaction of said probe nucleic acid sequence and said target nucleic acid sequence.
89 Citations
25 Claims
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1. A method of identifying biological samples comprising:
providing a microarray including a substrate having no preselected sites for association with micro-spheres wherein providing comprises coating said substrate with a composition including a population of micro-spheres dispersed in a fluid containing gelatin and immobilizing said micro-spheres in a single layer of single micro-spheres at random positions and at a uniform density on the substrate, at least one sub-population of said population of micro-spheres containing an optical barcode generated from at least one colorant associated with the micro-spheres and wherein said microspheres have a biological probe attached thereto;
contacting said microarray with a biological target sample;
detecting the optical barcode of said sub-population of micro-spheres due to the interaction of said biological probe and said biological target sample; and
identifying said biological sample.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of identifying biological samples comprising:
- providing a microarray wherein providing comprises coating a substrate with a composition including a population of micro-spheres dispersed in a fluid containing gelatin and immobilizing a single layer of single micro-spheres at random positions at a uniform density on the substrate wherein the substrate has no preselected sites for association with micro-spheres, at least one sub-population of said population of micro-spheres containing an optical barcode generated from at least one colorant associated with the micro-spheres, said colorant having one of a luminescent or fluorescent property and wherein said micro-spheres have a biological probe sequence attached thereto;
contacting said microarray with a biological target sample; and
detecting the optical barcode of said sub-population of micro-spheres due to the interaction of said probe and said target by;(a) whole frame imaging of the luminescent or fluorescent image resulting from said interaction to produce a first image; (b) whole frame imaging capture of said microarray under bright field illumination to obtain the micro-sphere optical barcode to produce a second image; and (c) processing said first and second images to obtain identification of said biological sample. - View Dependent Claims (22, 23, 24, 25)
- providing a microarray wherein providing comprises coating a substrate with a composition including a population of micro-spheres dispersed in a fluid containing gelatin and immobilizing a single layer of single micro-spheres at random positions at a uniform density on the substrate wherein the substrate has no preselected sites for association with micro-spheres, at least one sub-population of said population of micro-spheres containing an optical barcode generated from at least one colorant associated with the micro-spheres, said colorant having one of a luminescent or fluorescent property and wherein said micro-spheres have a biological probe sequence attached thereto;
Specification