Methods and systems for detecting and/or sorting targets
Provided herein are methods and systems for detecting and/or sorting targets in a sample based on the combined use of polynucleotide-encoded protein and substrate polynucleotides. The polynucleotide-encoded protein is comprised of a protein that specifically binds to a predetermined target and of an encoding polynucleotide that specifically binds to a substrate polynucleotide, wherein the substrate polynucleotide is attached to a substrate.
1. A target detection method comprising:
combining polynucleotide-encoded proteins complementary to substrate polynucleotides with the substrate polynucleotides bound to a substrate and a sample containing targets to form hybridized polynucleotide-encoded protein target complexes, wherein the polynucleotide-encoded proteins comprise orthogonal polynucleotide-encoded proteins comprising polynucleotide sequences selected from the group consisting of SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO:10, SEQ ID NO:11, SEQ ID NO:12, SEQ ID NO:13, SEQ ID NO:14, SEQ ID NO:15, SEQ ID NO:16, SEQ ID NO:17, and SEQ ID NO:18; and
detecting the hybridized polynucleotide-encoded protein target complexes.
2. A target detection method comprising:
combining polynucleotide-encoded proteins with a sample containing targets to form polynucleotide-encoded protein target complexes, wherein the polynucleotide-encoded proteins comprise a first and second group of polynucleotide-encoded proteins, wherein the first group specifically binds to a first target and the second group binds to a second target, and wherein the first and second group of polynucleotide-encoded proteins are orthogonal to one another and comprise polynucleotide sequences selected from the group consisting of SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO:10, SEQ ID NO:11, SEQ ID NO:12, SEQ ID NO:13, SEQ ID NO:14, SEQ ID NO:15, SEQ ID NO:16, SEQ ID NO:17, and SEQ ID NO:18;
hybridizing the polynucleotide-encoded protein target complexes to complementary substrate bound substrate polynucleotides; and
detecting the hybridized polynucleotide-encoded protein target complexes.
3. A target detection method comprising:
combining a) labeled polynucleotides complementary to both a target polynucleotide and a first group of substrate polynucleotides, b) polynucleotide-encoded antibodies complementary to a second group of substrate polynucleotides, c) the first and second group of substrate polynucleotides bound to a substrate, and d) a sample containing targets to form i) substrate polynucleotides hybridized to labeled polynucleotide-target polynucleotide complexes, and ii) substrate polynucleotides hybridized to polynucleotide-encoded antibody target complexes; and
detecting the labeled polynucleotide-target polynucleotide complexes and the polynucleotide-encoded antibody target complexes.
4. The method of claim 3 further wherein the labeled polynucleotides are orthogonal to the polynucleotide-encoded antibodies.
5. The method of claim 4 , wherein the orthogonal polynucleotide sequences are selected from the group consisting of SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO:10, SEQ ID NO:11, SEQ ID NO:12, SEQ ID NO:13, SEQ ID NO:14, SEQ ID NO:15, SEQ ID NO:16, SEQ ID NO:17, and SEQ ID NO:18.
6. The method of claim 5 , wherein the hybridization step further comprises a hybridization of 20 complementary bases.