Efficient activated cyanine dyes
First Claim
1. An activated dye having the formula:
- ##STR7## wherein n is 1, 2, or 3, X is S, O, N, CH2, or C(CH3)2, R1 is N-oxynaphthalimide-Rx, R2 is alkyl, alkylsulfonate, alkylcarboxylate, activated alkylsulfonate, or activated alkylcarboxylate having an alkyl chain about one to ten carbon atoms long,whereby Rx is selected from the group consisting of hydrogen, sulfonyl, and alkyl.
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Abstract
Activating groups based on N-hydroxynaphthalimide, are disclosed herein. The activating groups can mediate the coupling of labeling moieties, such as biotin or cyanine dyes, to a variety of components, including chain terminators, nucleoside triphosphates, and oligonucleotides, which are used in nucleotide sequencing. From these activating groups, activated esters of the labeling moieties can be prepared. The activated esters react with a component, for example a derivatized nucleotide chain terminator, to give a labeled component. In additions, methods of the present invention provide for labeling a nucleoside triphosphate in organic media. The activating groups and methods of the present invention allow the activation and coupling reactions to occur at a much higher yield, compared with the prior art.
56 Citations
33 Claims
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1. An activated dye having the formula:
- ##STR7## wherein n is 1, 2, or 3, X is S, O, N, CH2, or C(CH3)2, R1 is N-oxynaphthalimide-Rx, R2 is alkyl, alkylsulfonate, alkylcarboxylate, activated alkylsulfonate, or activated alkylcarboxylate having an alkyl chain about one to ten carbon atoms long,
whereby Rx is selected from the group consisting of hydrogen, sulfonyl, and alkyl.
- ##STR7## wherein n is 1, 2, or 3, X is S, O, N, CH2, or C(CH3)2, R1 is N-oxynaphthalimide-Rx, R2 is alkyl, alkylsulfonate, alkylcarboxylate, activated alkylsulfonate, or activated alkylcarboxylate having an alkyl chain about one to ten carbon atoms long,
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2. A method of preparing an activated dye, the method comprising the steps of:
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dissolving a cyanine dye having at least one carboxyl group in a solvent; and combining N-hydroxynaphthalimide-Rx, wherein Rx is selected from the group consisting of hydrogen, sulfonyl, and alkyl, and an activating agent, with the dissolved cyanine dye to form an activated dye. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 33)
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10. A method of labeling an oligonucleotide, the method comprising the steps of:
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modifying an oligonucleotide to contain a nucleophile thereby forming a modified oligonucleotide; combining the modified oligonucleotide with an activated dye having at least one N-hydroxynaphthalimide-Rx group, wherein Rx is selected from the group consisting of hydrogen, sulfonyl, and alkyl. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method of labeling a component comprising,
combining the component with an activated moiety having at least one N-hydroxynapthalimide-Rx group, wherein Rx is selected from the group consisting of hydrogen, sulfonyl and alkyl.
- 19. A method of labeling a nucleoside triphosphate comprising, combining a nucleoside triphosphate having a nucleophilic group with an activated moiety having at least one N-hydroxynapthalimide-Rx group, wherein Rx is selected from the group consisting of hydrogen, sulfonyl and alkyl.
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22. A method of labeling a nucleoside triphosphate, the method comprising the steps of:
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converting the nucleoside triphosphate to its trialkyl ammonium salt to form a nucleoside triphosphate trialkyl ammonium salt; and combining the nucleoside triphosphate trialkyl ammonium salt with an activated moiety having an activated ester group. - View Dependent Claims (23, 24, 25, 26)
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27. A method of preparing a dye labeled dideoxynucleotide triphosphate terminator, the method comprising step of:
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combining in a reaction mixture, a tributyl ammonium salt of a triphosphate nucleotide terminator; and an activated dye having at least one N-hydroxynapthalimide-Rx group.
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28. A method of labeling an oligonucleotide, the method comprising the steps of:
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converting the oligonucleotide to its trialkyl ammonium salt to form an oligonucleotide trialkyl ammonium salt; and combining the oligonucleotide trialkyl ammonium salt with an activated moiety having at least one activated ester group. - View Dependent Claims (29, 30, 31, 32)
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Specification