Binding-induced hairpin detection system
First Claim
1. A binding-induced hairpin detection system comprising:
- a. a first probe comprising a targeting molecule and an oligonucleotide that has a free end comprising a hairpin loop and a hairpin stem and an end attached to the targeting molecule; and
b. a second probe comprising a targeting molecule and an oligonucleotide that has an end attached to the targeting molecule and a free end comprising a nucleotide sequence that is complementary to a nucleotide sequence at or near the free end of the oligonucleotide of the first probe;
wherein the targeting molecule of the first and second probe is independently selected from a peptide aptamer, a protein receptor molecule, an antibody, or a ligand that is a peptide, a hormone, a lipid, or a glycan; and
wherein upon binding of the targeting molecule to a target molecule, the free end of the oligonucleotide of the second probe hybridizes at or near the free end of the oligonucleotide of the first probe forming, a hairpin stem, the non-hybridized portions of the first and second probes together with the target molecule bound thereto forming a hairpin loop, thereby providing a binding-induced hairpin with a closed circular structure.
1 Assignment
0 Petitions
Accused Products
Abstract
This application relates to a binding-induced hairpin detection system comprising: a. a first probe comprising a targeting molecule and an oligonucleotide that has a free end and an end attached to the targeting molecule; and b. a second probe comprising a targeting molecule and an oligonucleotide that has an end attached to the targeting molecule and a free end comprising a nucleotide sequence that is complementary to a nucleotide sequence at or near the free end of the oligonucleotide of the first probe; wherein upon binding of the targeting molecule to a target molecule, the free end of the oligonucleotide of the second probe hybridizes at or near the free end of the oligonucleotide of the first probe forming a hairpin stem, the non-hybridized portions of the first and second probes together with the target molecule bound thereto forming a hairpin loop, thereby providing a binding-induced hairpin.
12 Citations
15 Claims
-
1. A binding-induced hairpin detection system comprising:
-
a. a first probe comprising a targeting molecule and an oligonucleotide that has a free end comprising a hairpin loop and a hairpin stem and an end attached to the targeting molecule; and b. a second probe comprising a targeting molecule and an oligonucleotide that has an end attached to the targeting molecule and a free end comprising a nucleotide sequence that is complementary to a nucleotide sequence at or near the free end of the oligonucleotide of the first probe; wherein the targeting molecule of the first and second probe is independently selected from a peptide aptamer, a protein receptor molecule, an antibody, or a ligand that is a peptide, a hormone, a lipid, or a glycan; and wherein upon binding of the targeting molecule to a target molecule, the free end of the oligonucleotide of the second probe hybridizes at or near the free end of the oligonucleotide of the first probe forming, a hairpin stem, the non-hybridized portions of the first and second probes together with the target molecule bound thereto forming a hairpin loop, thereby providing a binding-induced hairpin with a closed circular structure. - View Dependent Claims (2, 3, 4)
-
-
5. A method of detecting a target molecule in a sample, the method comprising:
-
a. providing the sample; b. incubating the sample with i. a first probe comprising a targeting molecule and an oligonucleotide that has a free end comprising a hairpin loop and a hairpin stem and an end attached to the targeting molecule; and ii. a second probe comprising a targeting molecule and an oligonucleotide that has an end attached to the targeting molecule and a free end comprising a nucleotide sequence that is complementary to a nucleotide sequence at or near the free end of the oligonucleotide of the first probe; wherein the targeting molecule of the first and second probe is independently selected from a peptide aptamer, a protein receptor molecule, an antibody, or a ligand that is a peptide, a hormone, a lipid, or a glycan; c. contacting the sample with the first probe and the second probe, wherein upon binding of the targeting molecule to a target molecule, the free end of the oligonucleotide of the second probe hybridizes at or near the free end of the oligonucleotide of the first probe forming a hairpin stem, the non-hybridized portions of the first and second probes together with the target molecule bound thereto forming a hairpin loop, thereby providing a binding-induced hairpin with a closed circular structure; and d. detecting the binding-induced hairpin. - View Dependent Claims (6, 7, 8, 9, 10, 11)
-
-
12. A binding-induced hairpin detection system comprising:
-
a. a first probe comprising a targeting molecule and an oligonucleotide that has a free end comprising a hairpin loop and a hairpin stem and an end attached indirectly to the targeting molecule via a linker; and b. a second probe comprising a targeting molecule and an oligonucleotide that has an end attached indirectly to the targeting molecule via a linker, and a free end comprising a nucleotide sequence that is complementary to a nucleotide sequence at or near the free end of the oligonucleotide of the first probe; wherein the targeting molecule of the first and second probe is independently selected from an aptamer, a receptor, an antibody, or a ligand that is a peptide, a hormone, a lipid, or a glycan; wherein the linker of the first and second probe is independently selected from a peptide linker or a binding pair, said binding pair comprising a first member attached to the probe and a second member attached to the targeting molecule; and wherein upon binding of the targeting molecule to a target molecule, the free end of the oligonucleotide of the second probe hybridizes at or near the free end of the oligonucleotide of the first probe forming a hairpin stem, the non-hybridized portions of the first and second probes together with the target molecule bound thereto forming a hairpin loop, thereby providing a binding-induced hairpin with a closed circular structure. - View Dependent Claims (13, 14, 15)
-
Specification