Hollow polymer fiber optic system for single analyte and multiplexed analyte detection
Presented herein are methods, systems, and apparatus for single analyte detection or multiplexed analyte detection based on amplified luminescent proximity homogeneous assay (“alpha”) technology, but using hollow polymer fiber optics doped with ‘acceptor bead’ dye (e.g., thioxene, anthracene, rubrene, and/or lanthanide chelates) or ‘donor bead’ dye (e.g., phthalocyanine) that carry a signal generated by the dopant via singlet oxygen channeling.
1. A hollow polymer optic fiber (i) doped with an acceptor dye composition that accepts singlet oxygen and as a consequence emits light and (ii) having at least one fiber binding partner that binds to an analyte of interest conjugated to its interior surface, the hollow polymer optic fiber capable of transmitting light generated by singlet oxygen channeling for the detection and/or quantification of the analyte of interest in a sample.
2. The hollow polymer optic fiber of claim 1 , wherein the acceptor dye composition comprises a chemiluminescent singlet oxygen acceptor and a fluorescent compound.
3. The hollow polymer optic fiber of claim 2 , wherein the chemiluminescent singlet oxygen acceptor is selected from the group consisting of thioxene, dioxene, and dithiene.
4. The hollow polymer optic fiber of claim 2 , wherein the fluorescent compound is a lanthanide chelate.
5. The hollow polymer optic fiber of claim 4 , wherein the lanthanide chelate comprises a lanthanide selected from the group consisting of europium, terbium, dysprosium, samarium, ytterbium, erbium, and thulium.
6. The hollow polymer optic fiber of claim 2 , wherein the fluorescent compound comprises an organic dye.
7. The hollow polymer optic fiber of claim 1 , wherein the polymer optic fiber is doped with quantum dots.
8. The hollow polymer optic fiber of claim 1 , wherein the polymer optic fiber has an interior diameter that is from 0.1 mm to 2 mm, and an outer diameter that is from 1 mm to 3 mm.
9. The hollow polymer optic fiber of claim 1 , wherein the polymer optic fiber has an interior diameter that is sufficiently small to draw liquid into the interior of the polymer optic fiber by capillary action.
10. The hollow polymer optic fiber of claim 1 , wherein the polymer optic fiber has an interior diameter that preserves capillarity such that liquid is drawn into the interior of the polymer optic fiber by capillary action.
11. The hollow polymer optic fiber of claim 1 , wherein the hollow polymer optic fiber comprises multiple discrete portions along its length, each of which portions has a different concentration of the fiber binding partner conjugated to its interior surface for achieving a variety of levels of sensitivity of measurement of the analyte of interest to which the first binding partner binds.
12. The hollow polymer optic fiber of claim 1 , wherein the hollow polymer optic fiber comprises multiple discrete portions along its length, each of which has a different fiber binding partner conjugated to its interior surface.
13. The hollow polymer optic fiber of claim 12 , wherein each fiber binding partner is capable of binding to a different variant of a specific antigen.
14. The hollow polymer optic fiber of claim 12 , wherein each fiber binding partner is capable of binding to a different analyte.
15. The hollow polymer optic fiber of claim 1 , wherein the hollow polymer optic fiber comprises multiple hollow cores.
16. The hollow polymer optic fiber of claim 1 , wherein the hollow polymer optic fiber comprises polystyrene and/or poly(methyl methacrylate).
17. A bundle of hollow polymer optic fibers, each fiber of the bundle (i) doped with a corresponding acceptor dye composition that accepts singlet oxygen and as a consequence emits light and/or donor dye composition that releases singlet oxygen when illuminated with excitation light, and (ii) having at least one fiber binding partner that binds to an analyte of interest conjugated to its interior surface.
18. A hollow polymer optic fiber (i) doped with a donor dye composition that releases singlet oxygen when illuminated with excitation light and (ii) having at least one fiber binding partner that binds to an analyte of interest conjugated to its interior surface, the hollow polymer optic fiber capable of transmitting light generated by singlet oxygen channeling for the detection and/or quantification of the analyte of interest in a sample.
19. The hollow polymer optic fiber of claim 18 , wherein the donor dye composition comprises a photosensitizer that releases singlet oxygen when illuminated with excitation light.
20. The hollow polymer optic fiber of claim 19 , wherein the photosensitizer is a compound selected from the group consisting of phthalocyanine, naphthalocyanine, a chlorin, a phorphin, a phorphyrin, stellacyanin, chlorophyll, and rose bengal.