Substrates for isolating reacting and microscopically analyzing materials
First Claim
1. A device constructed for immobilizing bio-material capable of being associated with a fluorophore tag or luminescent tag for optically-stimulated fluorescent emission analysis or for luminescence analysis, comprising a coating of nitrocellulose polymer of thickness less than 5 micron, the coating adhered to a rigid support via one or more adherent intervening layers comprising at least an adherent metal oxide intervening layer, the nitrocellulose coating having an outer deposit-receiving surface that has enhanced binding capability for the bio-material as the result of exposure of the coating surface to corona treatment, and a deposit of the bio-material immobilized on the corona-treated surface of the nitrocellulose coating.
12 Assignments
0 Petitions
Accused Products
Abstract
An immobilizing device for biological material comprises a rigid support (12) carrying a substrate layer (20, 20′) of polymer having biological immobilizing properties, e.g. for amino and nucleic acids. Substantially solid ultra-thin substrate layers (20′) having a thickness less than about 5 micron, preferably between about 0.1 and 0.5 micron, and micro-porous, ultra-thin substrate layers (20′) having a thickness less than about 5 micron, preferably less than 3 micron, 2 or 1 micron are shown, which may be segmented by isolating moats M. The substrate layer is on a microscope slide (302), round disc (122), bio-cassette, at the bottom of a well of a multiwell plate, and as a coating inside a tube. Fluorescence or luminescence intensity and geometric calibration spots (420) are shown. Reading is enhanced by the intensity calibration spots (420) to enable normalization of readings under uneven illumination conditions, as when reading by dark field, side illumination mode. The reference spots are shown being printed simultaneously with printing an array of biological spots or with the same equipment Methods of forming layers of the device include controlled drawing from a bath of coating composition and drying, and spinning of C-D shaped substrates. Post-forming treatment is shown by corona treatment and radiation. Adherent metal oxides (14), silica-based materials and other materials are used to unite layers of the composite. In multi-well plates the oxide promotes joining of a bottom plate (95, 95′) and upper, well-defining structure (94) of dissimilar material. The oxides (14) also provide beneficial opacity to prevent light entering the glass support, for applying potential to the substrate, etc.
31 Citations
70 Claims
- 1. A device constructed for immobilizing bio-material capable of being associated with a fluorophore tag or luminescent tag for optically-stimulated fluorescent emission analysis or for luminescence analysis, comprising a coating of nitrocellulose polymer of thickness less than 5 micron, the coating adhered to a rigid support via one or more adherent intervening layers comprising at least an adherent metal oxide intervening layer, the nitrocellulose coating having an outer deposit-receiving surface that has enhanced binding capability for the bio-material as the result of exposure of the coating surface to corona treatment, and a deposit of the bio-material immobilized on the corona-treated surface of the nitrocellulose coating.
- 5. A device constructed for immobilizing a bio-material capable of being associated with a fluorophore tag or luminescent tag for optically-stimulated fluorescent emission analysis or for luminescence analysis, comprising a coating of nitrocellulose polymer of thickness less than 5 micron, the coating adhered to a rigid support via one or more adherent intervening layers, the nitrocellulose coating having an outer deposit-receiving surface that has enhanced binding capability for the bio-material as the result of exposure of the coating surface to an energetic surface-altering treatment, and a deposit of the bio-material immobilized on the treated nitrocellulose surface.
- 29. A device constructed for immobilizing a bio-material capable of becoming associated with a fluorophore tag or luminescent tag for optical emission analysis, comprising a coating of a polymer capable of binding with the bio-material, the coating having a thickness less than about 5 micron, the coating of polymer adhered to a rigid support via one or more adherent intervening layers, the coating of polymer having an outer deposit-receiving surface that has enhanced binding capability for the bio-material as the result of exposure of the surface to an energetic surface-altering treatment, and a deposit of the bio-material immobilized on the treated surface of the polymer coating.
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68. A device constructed for immobilizing bio-material capable of becoming associated with a fluorophore tag or luminescent tag for optical emission analysis, comprising a deposit-receiving coating of substantially solid nitrocellulose of thickness less than 5 micron adhered to a rigid support via one or more adherent intervening layers at least one of which is an adherent metal oxide, the adherent intervening layer, or layers collectively being substantially opaque, the coating of nitrocellulose having an outer deposit-receiving surface in corona-treated state for enhanced immobilization of the bio-material and a deposit of the bio-material immobilized on the corona-treated nitrocellulose deposit-receiving surface.
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69. A device constructed for immobilizing bio-material capable of becoming associated with a fluorophore tag or luminescent tag for optical emission analysis, comprising a deposit-receiving coating of substantially solid nitrocellulose of thickness less than 5 micron adhered to a rigid support via one or more adherent intervening layers at least one of which is an adherent metal oxide, the adherent intervening layer, or layers collectively, being substantially opaque, the coating of nitrocellulose having an outer deposit-receiving surface in surface-treated state for enhanced immobilization of the bio-material, the surface-treated state being the result of exposure of the outer surface of the coating of nitrocellulose to at least one of corona treatment, flame treatment, bombardment by charged particles comprising electrons, ions or sub-atomic particles, or by electromagnetic radiation of ultraviolet, gamma or X-ray wavelength, and a deposit of the bio-material immobilized on the surface-treated nitrocellulose deposit-receiving surface.
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70. A device constructed for immobilizing bio-material capable of becoming associated with a fluorophore tag or luminescent tag for optical emission analysis, comprising a deposit-receiving coating of substantially solid nitrocellulose of thickness less than 5 micron adhered to a rigid support via one or more adherent intervening layers, the coating of nitrocellulose having an outer deposit-receiving surface in treated state for enhanced immobilization of the bio-material, the surface-treated state being the result of exposure of the outer surface to at least one of corona treatment, flame treatment, bombardment by charged particles comprising electrons, ions or sub-atomic particles, or electromagnetic radiation of ultraviolet, gamma or X-ray wavelength, and a deposit of the bio-material immobilized on the surface-treated nitrocellulose deposit-receiving surface.
Specification