IN SITU HYBRIDIZATION DETECTION METHOD
First Claim
1. A composition comprising at least one recognition unit and at least one detection unit wherein:
- a) each unit independently comprises at least one nucleic acid analog segment;
b) at least one nucleic acid analog segment of the recognition unit specifically hybridizes to at least one nucleic acid analog segment of the detection unit;
c) the recognition unit further comprises at least one probe which recognizes at least one target in a sample;
d) the detection unit further comprises at least one detectable label; and
e) the at least one nucleic acid analog segments on the recognition unit and detection unit that specifically hybridize to other nucleic acid analog segments on the recognition unit and detection unit do not specifically hybridize to the probe, detectable label, or target; and
wherein the sample is an in situ hybridization (ISH) sample.
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Abstract
The invention provides compositions and methods for the detection of targets in a sample; in particular, an in situ hybridization (ISH) sample. Probes and detectable labels may be provided in multiple layers in order to increase the flexibility of a detection system, and to allow for amplification to enhance the signal from a target. The layers may be created by incorporating probes and detectable labels into larger molecular units that interact through nucleic acids base-pairing, including peptide-nucleic acid (PNA) base-pairing. Optional non-natural bases allow for degenerate base pairing schemes. The compositions and methods are also compatible with immunohistochemistry (IHC), immunocytochemistry (ICC), flow cytometry, enzyme immuno-assays (EIA), enzyme linked immuno-assays (ELISA), blotting methods (e.g. Western, Southern, and Northern), labeling inside electrophoresis systems or on surfaces or arrays, and precipitation, among other general detection assay formats. The invention is also compatible with many different types of targets, probes, and detectable labels.
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Citations
73 Claims
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1. A composition comprising at least one recognition unit and at least one detection unit wherein:
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a) each unit independently comprises at least one nucleic acid analog segment; b) at least one nucleic acid analog segment of the recognition unit specifically hybridizes to at least one nucleic acid analog segment of the detection unit; c) the recognition unit further comprises at least one probe which recognizes at least one target in a sample; d) the detection unit further comprises at least one detectable label; and e) the at least one nucleic acid analog segments on the recognition unit and detection unit that specifically hybridize to other nucleic acid analog segments on the recognition unit and detection unit do not specifically hybridize to the probe, detectable label, or target; and wherein the sample is an in situ hybridization (ISH) sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 69, 70, 71, 72, 73)
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16-68. -68. (canceled)
Specification