Diagnostic device incorporating a biochemical ligand
First Claim
1. A device for diagnostics comprising:
- a sensor having a surface to which a biochemical ligand is attached covalently, in a manner effective to cause a physical characteristic of the sensor to vary according to whether a binding partner becomes bound to the ligand, wherein the biochemical ligand is attached covalently to the surface of the sensor in selected areas only thereof and through a photoactivated covalent linkage.
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Accused Products
Abstract
A device useful in diagnostics in which a biochemical species is attached to the surface of a sensor, especially to the gate of a field effect transistor. In such a "BIOCHEMFET" it has been a problem to attach two or more biochemical species to the surface of the sensor, especially to the gates of a multi-gated FET. It has now been found possible to bond a group having a photoactivatable function covalently to the sensor surface, photo-expose the resultant modified surface selectively, e.g. through a mask, and bond the biochemical species, e.g. a hapten, antigen, antibody, lectin or enzyme, to the photoactivated function. In this way the biochemical species becomes attached in selected areas only. In view of the success of this technique realized under conditions of miniaturization, the invention makes possible "printed circuits for proteins".
In addition to the device are the process of manufacture thereto, use for diagnostic purposes and a diagnostic kit of the device and a partner capable of binding to the biochemical species.
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Citations
18 Claims
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1. A device for diagnostics comprising:
a sensor having a surface to which a biochemical ligand is attached covalently, in a manner effective to cause a physical characteristic of the sensor to vary according to whether a binding partner becomes bound to the ligand, wherein the biochemical ligand is attached covalently to the surface of the sensor in selected areas only thereof and through a photoactivated covalent linkage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
Specification