IP Library › Granted Patent US 12,577,702
Granted Patent B2
US 12,577,702 · App. 17/795,853 · Granted Mar 17, 2026

Oligonucleotide encoded chemical libraries, related systems, devices, and methods for detecting, analyzing, quantifying, and testing biologics/genetics

Inventors: Kandaswamy Vijayan (San Diego, CA); Kapil Mahakalkar (San Diego, CA); Yi Zhang (San Diego, CA); Andrew Boyd Macconnell (San Diego, CA); Joseph Franklin Rokicki (San Diego, CA); Michael Van Nguyen (San Diego, CA)
Assignee: Plexium, Inc.
C40B40/06C12N15/1058C12N15/1065
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Quick Facts
Patent No.
US 12,577,702
App. No.
17/795,853
Filed
Jul 27, 2022
Granted
Mar 17, 2026
Kind
B2
Art Unit
1684
USPC
506/4
Abstract

This application provides a bead with a covalently attached chemical compound and a covalently attached DNA barcode and methods for using such beads. The bead has many substantially identical copies of the chemical compound and many substantially identical copies of the DNA barcode. The compound consists of one or more chemical monomers, where the DNA barcode takes the form of barcode modules, where each module corresponds to and allows identification of a corresponding chemical monomer. The nucleic acid barcode can have a concatenated structure or an orthogonal structure. Provided are a method for sequencing the bead-bound nucleic acid barcode, for cleaving the compound from the bead, and for assessing biological activity of the released compound.

Claims (39)

1 . A system for screening chemical compounds for their ability to modulate the biological activity of a cell or a component of a cell, comprising:

an assay device comprising a multiplicity of wells separated from one another; a plurality of beads, wherein:

a single bead is disposed in each well,

each bead comprises a plurality of substantially identical bead-bound compounds,

said bead-bound compounds are covalently linked to the bead by a cleavable linker such that said compounds are releasable from said bead in a measurable dose dependent manner as part of an assay,

said beads further comprising a plurality of substantially identical bead-bound DNA barcodes linked to the bead (i) by a cleavable linker or (ii) by a non-cleavable linker, and

the DNA barcode identifies the compound; and

a transfer dispenser comprising cavities aligned over corresponding wells of the assay device to form a closed chamber between each of the cavities and each of the wells, wherein each of the cavities is configured to hold the single bead transferred into each of the corresponding wells.

2 . The system of claim 1 , further comprising a plurality of spherical caps, wherein each spherical cap fits in a circular aperture of a well.

3 . The system of claim 1 , wherein each bead-bound DNA barcode comprises a plurality of DNA barcode modules, and each DNA barcode module encodes information that identifies a chemical library monomer, each successive DNA barcode module being separated by a primer binding site.

4 . The system of claim 1 , wherein at least one bead-bound DNA barcode comprises one or more nucleic acids that identify a class of chemical compound cleavably attached to the bead, a step number in a multi-step pathway of organic synthesis, a date that the compound was synthesized, a disease that the compound is intended to treat, a cellular event that the compound is intended to stimulate or inhibit, or one or more reaction conditions to couple a chemical library monomer to the bead.

5 . The system of claim 1 , wherein at least one bead-bound DNA barcode comprises one or more nucleic acids that encode information besides an identity of a chemical library monomer.

6 . The system of claim 1 , wherein at least one bead-bound DNA barcode comprises a nucleic acid that is capable of forming a hairpin structure, the hairpin structure comprising a sequencing primer, an annealing site for the sequencing primer, and a bend disposed 5′ relative to the sequencing primer and 3′ relative to the annealing site.

7 . The system of claim 1 , wherein the DNA barcode comprises a first DNA barcode module and a first annealing site of a splint oligonucleotide, wherein the splint oligonucleotide comprises three nucleic acids, the three nucleic acids comprising:

a nucleic acid that is a hybridizing complement to the first DNA barcode module;

a nucleic acid that is a hybridizing complement to a second DNA barcode module; and

a nucleic acid that is a second annealing site.

8 . The system of claim 1 , wherein at least one bead-bound DNA barcode excludes a nucleic acid that is a promoter or that is polyA.

9 . The system of claim 1 , wherein at least one bead comprises a quencher, a fluorophore, and a photocleavable linked that couples the fluorophore to the at least one bead.

10 . The system of claim 1 , wherein at least one bead comprises a response capture element, the response capture element comprising:

poly (dT), an extron targeting RNA probe, an antibody, or an aptamer.

11 . A system for screening chemical compounds for their ability to modulate the biological activity of a cell or a component of a cell, comprising:

an assay device comprising a multiplicity of wells wherein each well is separated from other wells;

a plurality of beads where a single bead is suitable for disposal in a single well, wherein each bead comprises a plurality of substantially identical bead-bound compounds, wherein said bead-bound compounds are covalently linked to the bead by a cleavable linker such that said compounds are releasable from said bead in a measurable dose dependent manner as part of an assay,

said beads further comprising a plurality of substantially identical bead-bound DNA barcodes linked to the bead (i) by a cleavable linker or (ii) by a non-cleavable linker, and wherein the DNA barcode identifies the compound, and wherein each bead comprises at least about 10,000 substantially identical DNA barcodes; and

a transfer dispenser comprising cavities aligned over corresponding wells of the assay device to form a closed chamber between each of the cavities and each of the wells, wherein each of the cavities is configured to hold the single bead transferred into each of the corresponding wells.

12 . The system of claim 11 , further comprising a plurality of spherical caps, wherein each spherical cap fits in a circular aperture of a well.

13 . The system of claim 11 , wherein at least one bead-bound DNA barcode comprises one or more nucleic acids that identify a class of chemical compound cleavably attached to the bead, a step number in a multi-step pathway of organic synthesis, a date that the compound was synthesized, a disease that the compound is intended to treat, a cellular event that the compound is intended to stimulate or inhibit, or one or more reaction conditions to couple a chemical library monomer to the bead.

14 . The system of claim 11 , wherein at least one bead-bound DNA barcode comprises one or more nucleic acids that encode information besides an identity of a chemical library monomer.

15 . The system of claim 11 , wherein at least one bead-bound DNA barcode comprises a nucleic acid that is capable of forming a hairpin structure, the hairpin structure comprising a sequencing primer, an annealing site for the sequencing primer, and a bend disposed 5′ relative to the sequencing primer and 3′ relative to the annealing site.

16 . The system of claim 11 , wherein the DNA barcode comprises a first DNA barcode module and a first annealing site of a splint oligonucleotide, wherein the splint oligonucleotide comprises three nucleic acids, the three nucleic acids comprising:

a nucleic acid that is a hybridizing complement to the first DNA barcode module;

a nucleic acid that is a hybridizing complement to a second DNA barcode module;

a nucleic acid that is a second annealing site.

17 . The system of claim 11 , wherein at least one bead-bound DNA barcode excludes a nucleic acid that is a promoter or that is polyA.

18 . The system of claim 11 , wherein at least one bead comprises a quencher, a fluorophore, and a photocleavable linked that couples the fluorophore to the at least one bead.

19 . The system of claim 11 , further comprising a transfer device operated robotically or manually, the transfer device comprising:

a pipette including a flexible tip, the flexible tip comprising polyimide and extending along no more than 20% of a total length of the pipette.

20 . The system of claim 1 , the transfer dispenser comprising a locking mechanism configured to lock the transfer dispenser into alignment with the assay device.

Continuity (3)
Continuation In Part 16870809 · May 8, 2020
Continuation In Part 16774871 · Jan 28, 2020
Related Publication 20230065224A1 · Mar 2, 2023
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