Functionalized nanocrystals and their use in labeling for strand synthesis or sequence determination
First Claim
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1. A functionalized nanocrystal-labeled nucleobase comprising a functionalized nanocrystal operably linked to a nucleobase;
- wherein the functionalized nanocrystal comprises a core and a shell, a capping compound comprising a compound having the formula HS(CH2)nX wherein X is a carboxylate, and a coating comprising diaminocarboxylic acid which is operably linked to the capping compound; and
wherein the diaminocarboxylic acid of the functionalized nanocrystal comprises one or more reactive functionalities, and the nucleobase comprises one or more reactive functionalities, which are used to operably link the functionalized nanocrystal to the nucleobase.
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Abstract
Provided are compositions comprising functionalized nanocrystal-labeled nucleobases that are produced by operably linking a nucleobase to a functionalized nanocrystal via reactive functionalities. Also provided are kits comprising a plurality of species of functionalized nanocrystal-labeled nucleobases. The functionalized nanocrystal-labeled nucleobases may be added to a strand synthesis reaction under suitable conditions to be incorporated into one or more strands synthesized in the reaction.
110 Citations
22 Claims
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1. A functionalized nanocrystal-labeled nucleobase comprising a functionalized nanocrystal operably linked to a nucleobase;
- wherein the functionalized nanocrystal comprises a core and a shell, a capping compound comprising a compound having the formula HS(CH2)nX wherein X is a carboxylate, and a coating comprising diaminocarboxylic acid which is operably linked to the capping compound; and
wherein the diaminocarboxylic acid of the functionalized nanocrystal comprises one or more reactive functionalities, and the nucleobase comprises one or more reactive functionalities, which are used to operably link the functionalized nanocrystal to the nucleobase. - View Dependent Claims (2, 3, 4, 5)
- wherein the functionalized nanocrystal comprises a core and a shell, a capping compound comprising a compound having the formula HS(CH2)nX wherein X is a carboxylate, and a coating comprising diaminocarboxylic acid which is operably linked to the capping compound; and
- 6. A kit for using functionalized nanocrystal-labeled nucleobases in a process selected from the group consisting of strand synthesis, sequencing a synthesized strand, and a combination thereof, the kit comprising a plurality of species of functionalized nanocrystal-labeled nucleobases, wherein an amount of each species of functionalized nanocrystal-labeled nucleobase is separately packaged, wherein each species of functionalized nanocrystal-labeled nucleobase comprises a different nucleobase type than the nucleobase type of the other species of the plurality of species of functionalized nanocrystal-labeled nucleobases, and wherein each species of functionalized nanocrystal-labeled nucleobase is differentially labeled with a species of functionalized nanocrystal that can emit a fluorescence emission that is spectrally resolvable as compared to the species of functionalized nanocrystals used to label the other species of the plurality of species of functionalized nanocrystal-labeled nucleobases.
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8. A kit comprising, in separate packaging:
- an amount of a functionalized nanocrystal having one or more reactive functionalities; and
an amount of a nucleobase having one or more reactive functionalities;
wherein the functionalized nanocrystal comprises a core and a shell, a capping compound comprising a compound having the formula HS(CH2)nX wherein X is a carboxylate, and a coating comprising diaminocarboxylic acid which is operably linked to the capping compound. - View Dependent Claims (9, 10)
- an amount of a functionalized nanocrystal having one or more reactive functionalities; and
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11. A functionalized nanocrystal-labeled nucleobase comprising a functionalized nanocrystal operably linked to a nucleobase;
- wherein the functionalized nanocrystal comprises a core and a shell, a capping compound comprising a compound having the formula HS(CH2)nX wherein X is a carboxylate, and at least one additional coating comprising an amino acid which is operably linked to the capping compound; and
wherein a coating of the at least one additional coating comprises one or more reactive functionalities, and the nucleobase comprises one or more reactive functionalities, which are used to operably link the functionalized nanocrystal to the nucleobase. - View Dependent Claims (12, 13)
- wherein the functionalized nanocrystal comprises a core and a shell, a capping compound comprising a compound having the formula HS(CH2)nX wherein X is a carboxylate, and at least one additional coating comprising an amino acid which is operably linked to the capping compound; and
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14. A functionalized nanocrystal-labeled nucleobase comprising a functionalized nanocrystal operably linked to a nucleobase;
- wherein the functionalized nanocrystal comprises a core and a shell, a capping compound comprising homocysteine, and at least one additional coating selected from the group consisting of a maleimide derivative, and an amino acid; and
wherein a coating of the at least one additional coating comprises one or more reactive functionalities, and the nucleobase comprises one or more reactive functionalities, which are used to operably link the functionalized nanocrystal to the nucleobase. - View Dependent Claims (15, 16)
- wherein the functionalized nanocrystal comprises a core and a shell, a capping compound comprising homocysteine, and at least one additional coating selected from the group consisting of a maleimide derivative, and an amino acid; and
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17. A kit comprising, in separate packaging:
- an amount of a functionalized nanocrystal having one or more reactive functionalities; and
an amount of a nucleobase having one or more reactive functionalities;
wherein the functionalized nanocrystal comprises a core and a shell, a capping compound comprising a compound having the formula HS(CH2)nX wherein X is a carboxylate, and at least one additional coating comprising an amino acid which is operably linked to the capping compound. - View Dependent Claims (18, 19)
- an amount of a functionalized nanocrystal having one or more reactive functionalities; and
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20. A kit comprising, in separate packaging:
- an amount of a functionalized nanocrystal having one or more reactive functionalities; and
an amount of a nucleobase having one or more reactive functionalities;
wherein the functionalized nanocrystal comprises a core and a shell, a capping compound comprising homocysteine, and at least one additional coating selected from the group consisting of a maleimide derivative, and an amino acid. - View Dependent Claims (21, 22)
- an amount of a functionalized nanocrystal having one or more reactive functionalities; and
Specification