Devices and methods for detection of an analyte based upon light interference
First Claim
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1. An optical assay device for an analyte comprising:
- a substrate consisting of one or more layers having an optically active surface exhibiting a first color in response to light impinging thereon, and exhibiting a second color comprising an intensity of at least one wavelength of light different from said first color, in response to said light when said analyte is present on an attachment layer,said attachment layer selected from the group consisting of a polymeric silane, polymeric siloxane, a dendrimer, and film forming latexes, provided on an uppermost surface of said substrate and,a layer of non-specific protein, provided on said attachment layer, present in an amount that allows said analyte to bind to said attachment layer and which improves signal generation when a specific secondary reagent binds to said analyte present on the attachment layer of the device.
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Abstract
Device for detecting the presence or amount of an analyte of interest, having a substrate possessing an optically active surface which exhibits a first color in response to light impinging thereon, and exhibits a second color comprising a combination of wavelengths of light different from the first color or comprising an intensity of at least one wavelength of light different from the first color, in response to the light when the analyte is present on the surface of any amount selected from 0.1 nM, 0.1 ng/ml, 50 fg, and 2×103 organisms comprising the analyte.
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Citations
24 Claims
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1. An optical assay device for an analyte comprising:
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a substrate consisting of one or more layers having an optically active surface exhibiting a first color in response to light impinging thereon, and exhibiting a second color comprising an intensity of at least one wavelength of light different from said first color, in response to said light when said analyte is present on an attachment layer, said attachment layer selected from the group consisting of a polymeric silane, polymeric siloxane, a dendrimer, and film forming latexes, provided on an uppermost surface of said substrate and, a layer of non-specific protein, provided on said attachment layer, present in an amount that allows said analyte to bind to said attachment layer and which improves signal generation when a specific secondary reagent binds to said analyte present on the attachment layer of the device. - View Dependent Claims (2)
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3. An assay device for an analyte comprising;
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a substrate consisting of one or more layers having an optically active surface exhibiting a first color in response to light impinging thereon, and exhibiting a second color comprising an intensity of at least one wavelength of light different from said first color, in response to said light when said analyte is present on an attachment layer, said attachment layer, on an uppermost surface of said substrate, selected from the group consisting of a polymeric silane, polymeric siloxane, a dendrimer, and film forming latexes which promotes binding of the analyte to said attachment layer by hydrophobic interactions, and a layer of non-specific protein provided on said attachment layer, said non-specific protein present in an amount that allows said analyte to bind to said attachment layer. - View Dependent Claims (4, 19)
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5. Device for the determination of Chlamydia or gram negative bacterial antigen comprising;
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a substrate consisting of one or more layers having an optically active surface exhibiting a first color in response to light impinging thereon, and exhibiting a second color comprising an intensity of at least one said wavelength of light different from said first color, in response to said light when said antigen is present on an attachment layer, said attachment layer, on an uppermost surface of said substrate, selected from the group consisting of dendrimers, polymeric silanes, polymeric siloxanes, and film forming latexes which promote binding of the antigen to said attachment layer by hydrophobic interaction, and a layer of non-specific protein provided on said attachment layer, said non-specific protein present in an amount that allows said antigen to bind to said attachment layer. - View Dependent Claims (6, 7, 10, 11)
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8. An assay device for an analyte comprising;
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a substrate consisting of one or more layers having an optically active surface exhibiting a first color in response to light impinging thereon, and exhibiting a second color comprising a combination of wavelengths of light different from said first color, in response to said light when said analyte is present on an attachment layer, an anti-reflective film provided on an uppermost surface of said substrate, said attachment layer, provided on said anti-reflective film, selected from the group consisting of a polymeric silane, polymeric siloxane, a dendrimer, and film forming latexes which promotes binding of the analyte to said attachment layer by hydrophobic interactions, and a layer of non-specific protein provided on said attachment layer, said non-specific protein present in an amount that allows said analyte to bind to said attachment layer. - View Dependent Claims (12)
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9. Device for the determination of Chlamydia or gram negative bacterial antigen comprising;
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a substrate consisting of one or more layers having an optically active surface exhibiting a first color in response to light impinging thereon, and exhibiting a second color comprising a combination of wavelengths of light different from said first color, in response to said light when said antigen is present on an attachment layer, an anti-reflective film provided on an uppermost surface of said substrate, said attachment layer, provided on said anti-reflective film, selected from the group consisting of dendrimers, polymeric silanes, polymeric siloxanes, and film forming latexes which promote binding of the antigen to said attachment layer by hydrophobic interaction, and a layer of non-specific protein provided on said attachment layer, said non-specific protein present in an amount that allows said antigen to bind to said attachment layer.
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13. An optical assay device for an analyte comprising:
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a substrate consisting of one or more layers having an optically active surface exhibiting a first color in response to light impinging thereon, and exhibiting a second color comprising a combination of wavelengths of light different from said first color, in response to said light when said analyte is present on an attachment layer, an anti-reflective film, provided on an uppermost surface of said substrate, said attachment layer, provided on said anti-reflective film, selected from the group consisting of a polymeric silane, polymeric siloxane, a dendrimer, and film forming latexes on said substrate, wherein the analyte of interest is captured by a non-specific interaction with said attachment layer and said analyte is detected by the binding of a specific secondary reagent to said analyte. - View Dependent Claims (14, 15, 16, 17)
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18. An optical assay device for an analyte comprising:
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a substrate consisting of one or more layers having an optically active surface exhibiting a first color in response to light impinging thereon, and exhibiting a second color comprising an intensity of at least one wavelength of light different from said first color, in response to said light when said analyte is present on an attachment layer, an attachment layer, provided on said substrate, selected from the group consisting of a polymeric silane, polymeric siloxane, a dendrimer, and film forming latexes on said substrate, wherein the analyte of interest is captured by a non-specific interaction with said attachment layer and said analyte is detected by the binding of a specific secondary reagent to said analyte. - View Dependent Claims (20, 21)
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22. An optical assay device for an analyte comprising:
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a substrate consisting of one or more layers having an optically active surface exhibiting a first color in response to light impinging thereon, and exhibiting a second color comprising a combination of wavelengths of light different from said first color, in response to said light when said analyte is present on an attachment layer, an anti-reflective film provided on an uppermost surface of said substrate, said attachment layer selected from the group consisting of a polymeric silane, polymeric siloxane, a dendrimer, and film forming latexes, provided on said anti-reflective film and, a layer of non-specific protein, provided on said attachment layer, present in an amount that allows said analyte to bind to said attachment layer and which improves the signal generation when a specific secondary reagent binds to said analyte present on the surface of the device. - View Dependent Claims (23, 24)
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Specification