Self-assembling multimeric nucleic acid constructs
First Claim
1. A self-assembling aggregate comprisinga construct comprising a first streptavidin or avidin molecule, having a plurality of first biotinylated single-stranded nucleic acids bound to said first streptavidin or avidin molecule;
- a plurality of second biotinylated single-stranded nucleic acids bound to a second streptavidin or avidin molecule to form a multimeric nucleic acid, at least one of said second nucleic acids hybridizing with a complementary sequence of one of said first nucleic acids; and
a functional group attached to a third single-stranded nucleic acid, said third single-stranded nucleic acid hybridizing with complementary sequence of one of said second single-stranded nucleic acids bound to said multimeric nucleic acid.
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Accused Products
Abstract
The invention is directed to constructs and compositions containing multimeric forms of nucleic acid. Multimeric nucleic acids comprise single-stranded nucleic acids attached via biotin to streptavidin and bound with a functional group. These constructs can be utilized in vivo to treat or identify diseased tissue or cells. Repeated administrations of multimeric nucleic acid compositions produce a rapid and specific amplification of nucleic acid constructs and their attached functional groups. For treatment purposes, functional groups may be toxins, radioisotopes, genes or enzymes. Diagnostically, labeled multimeric constructs may be used to identify specific targets in vivo or in vitro. Multimeric nucleic acids may also be used in nanotechnology and to create self-assembling polymeric aggregates such as membranes of defined porosity, microcircuits and many other products.
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Citations
16 Claims
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1. A self-assembling aggregate comprising
a construct comprising a first streptavidin or avidin molecule, having a plurality of first biotinylated single-stranded nucleic acids bound to said first streptavidin or avidin molecule; -
a plurality of second biotinylated single-stranded nucleic acids bound to a second streptavidin or avidin molecule to form a multimeric nucleic acid, at least one of said second nucleic acids hybridizing with a complementary sequence of one of said first nucleic acids; and a functional group attached to a third single-stranded nucleic acid, said third single-stranded nucleic acid hybridizing with complementary sequence of one of said second single-stranded nucleic acids bound to said multimeric nucleic acid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A self-assembling aggregate comprising
a first construct comprising a plurality of first single-stranded nucleic acids bound to a first coupling agent forming a first multimer; -
a second construct comprising a plurality of second single-stranded nucleic acids bound to a second coupling agent forming a second multimer, at least one of said second single-stranded nucleic acids hybridizing with a complementary sequence of one of said first single-stranded nucleic acids; and a plurality of third single-stranded nucleic acids, each of said third single-stranded nucleic acids being attached to a functional group, and each of said third single-stranded nucleic acids hybridizing with a complementary sequence of a single-stranded nucleic acid attached to the aggregate, wherein the first counting agent and the second coupling agent each include a protein, a 5'"'"'-amino-containing oligonucleotide, a 5'"'"'-thiol-containing oligonucleotide, a polyamidoamine or a divalent linker. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification