Label-free methods for performing assays using a colorimetric resonant reflectance optical biosensor
First Claim
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1. A method of detecting cleavage of one or more entire specific binding substances from a surface of a colorimetric resonant reflectance optical biosensor, wherein one or more specific binding substances are immobilized on the surface of the biosensor at distinct locations, comprising:
- a. detecting a colorimetric resonant reflectance optical biosensor peak wavelength value (PWV) of the distinct locations;
b. applying one or more cleaving molecules to the distinct locations;
c. detecting a colorimetric resonant reflectance optical PWV of the distinct locations; and
d. comparing the PWVs from step (a) with the PWVs from step (c);
wherein the cleavage of one or more entire specific binding substances is detected.
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Abstract
Methods are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also relates to optical devices.
278 Citations
37 Claims
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1. A method of detecting cleavage of one or more entire specific binding substances from a surface of a colorimetric resonant reflectance optical biosensor, wherein one or more specific binding substances are immobilized on the surface of the biosensor at distinct locations, comprising:
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a. detecting a colorimetric resonant reflectance optical biosensor peak wavelength value (PWV) of the distinct locations;
b. applying one or more cleaving molecules to the distinct locations;
c. detecting a colorimetric resonant reflectance optical PWV of the distinct locations; and
d. comparing the PWVs from step (a) with the PWVs from step (c);
wherein the cleavage of one or more entire specific binding substances is detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of detecting inhibition activity of one or more molecules against enzyme or binding partners that effect or bind molecules which cleave specific binding substances, wherein the specific binding substances are immobilized on a surface of a colorimetric resonant reflectance optical biosensor comprising:
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a. detecting a colorimetric resonant reflectance optical PWV of a distinct location;
b. applying one or more molecules suspected of having inhibition activity to the distinct location;
c. applying one or more enzymes or binding partners to the distinct location;
d. detecting the colorimetric resonant reflectance optical PWV of the distinct location;
e. comparing the PWV from step (a) with the PWV from step (d); and
wherein inhibition activity of one or more molecules against the enzymes or binding partners which effect or bind one or more specific binding substances is detected. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of detecting a change in a cell growth pattern comprising:
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a. growing cells on a colorimetric resonant reflectance optical biosensor;
b. detecting a colorimetric resonant reflectance optical PWV;
c. applying a test reagent to the cells;
d. detecting the colorimetric resonant reflectance optical PWV; and
e. comparing the PWV of step (b) to the PWV of step (d);
wherein a difference between the colorimetric resonant reflectance optical PWV of step (b) in relation to the colorimetric resonant reflectance optical PWV of step (d) indicates a change in a cell growth pattern. - View Dependent Claims (22, 23, 24)
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25. A method of detecting the binding of molecules released from cells grown in a semi-permeable internal sleeve held in contact with a colorimetric resonant reflectance optical biosensor comprising:
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a. detecting a colorimetric resonant reflectance optical PWV of a distinct location of the biosensor;
b. growing cells in the semi-permeable internal sleeve held in contact with the colorimetric resonant reflectance optical biosensor at the distinct location;
c. detecting the colorimetric resonant reflectance optical PWV of the distinct location;
d. comparing the PWV of step (a) to the PWV of step (c);
wherein binding of the molecules released from cells grown in the semi-permeable internal sleeve held in contact with the colorimetric resonant reflectance optical biosensor to the one or more specific binding substances is detected. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification