Method and apparatus for making nucleic acid arrays
First Claim
1. A method for depositing a pre-made nucleic acid onto a substrate surface wherein said deposited nucleic acid is capable of hybridizing to its complement, said method comprising:
- loading an aqueous fluid composition of said pre-made nucleic acid into thermal inkjet head comnprising an orifice and a firing chamber by contacting said orifice with said fluid composition in a manner sufficient for said fluid composition to flow through said orifice into said firing chamber;
positioning said thermal inkjet head filled with said fluid composition of said pre-made nucleic acid in opposing relation to said substrate surface, and actuating said thermal inkjet head in a maniner sufficient to expel a volume of said composition onto said substrate surface, whereby said pre-made nucleic acid is deposited on said substrate surface, wherein said deposited nucleic acid is capable of hybridizing to its complement.
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Abstract
Methods and devices for depositing a nucleic acid on a substrate surface are provided. In the subject methods, a thermal inkjet head loaded with nucleic acid fluid composition is positioned in opposing relationship to, e.g. over, a substrate surface. Actuation of the thermal inkjet results in the expulsion of volume of the nucleic acid composition onto the substrate surface. The subject methods and devices find use in a variety of applications, particularly in the preparation of nucleic acid arrays, and more particular arrays of oligonucleotides or polynucleotides, e.g. cDNAs.
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Citations
10 Claims
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1. A method for depositing a pre-made nucleic acid onto a substrate surface wherein said deposited nucleic acid is capable of hybridizing to its complement, said method comprising:
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loading an aqueous fluid composition of said pre-made nucleic acid into thermal inkjet head comnprising an orifice and a firing chamber by contacting said orifice with said fluid composition in a manner sufficient for said fluid composition to flow through said orifice into said firing chamber;
positioning said thermal inkjet head filled with said fluid composition of said pre-made nucleic acid in opposing relation to said substrate surface, and actuating said thermal inkjet head in a maniner sufficient to expel a volume of said composition onto said substrate surface, whereby said pre-made nucleic acid is deposited on said substrate surface, wherein said deposited nucleic acid is capable of hybridizing to its complement. - View Dependent Claims (2)
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3. A method for depositing a pre-made nucleic acid onto a substrate surface wherein said deposited nucleic acid is capable of hybridizing to its complement, said method comprising:
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(a) loading an aqueous fluid composition orsaid pre-made nucleic acid into a thermal inkjet head comprising;
(i) an orifice;
(ii) a firing chamber; and
(iii) a heating element;
by contacting said orifice with said fluid composition in a manner sufficent for said fluid composition to flow through said orifice into said firing chamber;
(b) positioning said loaded thermal inkjet head in opposing relationship to a substrate surface; and
(c) raising the temperature of said heating element in a manner sufficient to expel a volume of said pre-made nucleic acid fluid through said orifice onto said substrate surface;
whereby said pre-made nucleic acid is deposited on a substrate surface, wherein said deposited nucleic acid is capable of hybridizing to its complement. - View Dependent Claims (4, 5, 6, 7, 8)
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9. A method for producing a eDNA array, said method comprising:
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(a) loading an aqueous fluid pre-made cDNA composition into a Thermal inkjet head comprising;
(i) an orifice;
(ii) a firing chamber; and
(iii) a heating clement;
by contacting said orifice with said fluid composition in a manner sufficient lor said fluid composition to flow through said orifice into said firing chamber;
(b) positioning said loaded inkjet head in opposing relationship to a substrate surface;
(c) raising the temperature of said heating clement in a manner sufficient to expel a volume of DNA composition through said orifice onto said substrate surface; and
(d) repeating steps (a) to (c) at least one additional time, whereby said array is produced, wherein cDNAs present on said array are capable of hybridizing to their complemnents. - View Dependent Claims (10)
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Specification