Multi-purpose optical analysis disc for conducting assays and related methods for attaching capture agents
First Claim
1. An optical bio-disc, comprising:
- a substantially circular substrate having a center and an outer edge;
a metal layer associated with the substrate;
a target zone disposed between the center and the outer edge; and
at least one capture agent that binds to the metal layer such that the capture agent is immobilized on the metal layer within the target zone to thereby form a capture zone.
4 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to optical bio-disc systems and related test methods and to immobilizing receptor molecules on optical bio-discs. When a sample is injected into a fluidic circuit, the target agent binds to a capture agent or probe bound in a capture zone. A signal is generated from tags attached to a reporter probe that has specific affinity to the target agent. The assays and methods of the present invention are implemented on a bio-disc. The bio-disc includes a flow channel having capture zones in fluid communication with a mixing chamber and a peripheral waste reservoir. The bio-disc is implemented on an optical disc that has information encoding format such as a CD. A bio-disc drive assembly is employed to rotate the disc, read and process any encoded information, and analyze the samples in the flow channel of the bio-disc.
-
Citations
153 Claims
-
1. An optical bio-disc, comprising:
-
a substantially circular substrate having a center and an outer edge;
a metal layer associated with the substrate;
a target zone disposed between the center and the outer edge; and
at least one capture agent that binds to the metal layer such that the capture agent is immobilized on the metal layer within the target zone to thereby form a capture zone. - View Dependent Claims (2, 3, 4, 5, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
6. An optical bio-disc, comprising:
-
a substantially circular substrate having a center and an outer edge;
a metal layer associated with the substrate;
a target zone disposed between the center and the outer edge;
an active layer formed on the surface of said metal layer; and
at least one capture agent that binds to said active layer such that the capture agent is immobilized on said active layer within the target zone to thereby form a capture zone, wherein the active layer is formulated to immobilize a pellet formed by an enzyme reaction. - View Dependent Claims (7, 8, 9, 10, 11)
-
-
22. A method of making an optical assay disc for performing a binding assay, said method of making comprising:
-
providing a substantially circular rotatable substrate having a center, an outer edge, and a metal layer associated thereto;
depositing a plurality of capture agents onto said metal layer, thereby forming a capture zone;
incubating said capture agents on said metal layer to thereby facilitate binding of one or more capture agents onto the metal layer;
washing the capture zones to remove excess capture agents;
attaching a cap portion to said metal layer using an adhesive member with fluidic channels formed therein thereby forming fluidic circuits, said fluidic channels aligned such that the capture zones are incorporated in said fluidic circuits;
blocking unoccupied sites within said fluidic circuit with a blocking agent;
incubating said blocking agent in said fluidic circuit to thereby facilitate binding of the blocking agent onto the unoccupied sites within said fluidic circuit;
aspirating said blocking agent out of said fluidic circuit; and
washing said fluidic circuit to remove residual blocking agent from said fluidic circuit. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
-
-
35. An optical bio-disc for performing an immunochemical assay, said disc comprising:
-
a substantially circular rotatable substrate having a center and an outer edge;
a metal layer disposed over said substrate;
a cap portion integrally attached to the metal layer by an adhesive member, the adhesive member having one or more portions removed, thereby forming one or more channels defined there between; and
one or more capture agents immobilized on the metal layer, the capture agents defining discrete capture zones within the one or more channels. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42)
-
-
43. An optical disc and drive system for performing a binding assay, the system comprising:
-
an optical assay disc comprising;
a substrate, said substrate having a circumferential peripheral reservoir formed therein;
a metal layer disposed over the substrate;
a cap portion integrally attached to the metal layer by an adhesive member, the adhesive member having one or more portions removed, thereby forming one or more channels defined there between; and
one or more capture agents immobilized on the metal layer, the capture agents defining discrete capture zones within the one or more channels; and
an optical disc drive comprising;
a light source for directing light to said assay disc at said capture zones;
a detector for detecting light reflected from or transmitted through the disc at the capture zones and providing a signal; and
a processor for using the signal to count items in the sample bound to the capture agents. - View Dependent Claims (44, 45, 46, 135)
-
-
47. An optical bio-disc for performing an immunochemical assay, said disc comprising:
-
a substantially circular rotatable substrate having a center and an outer edge, said substrate having formed therein a circumferential peripheral reservoir proximal to said outer edge;
a metal layer disposed over said substrate;
a cap portion integrally attached to the metal layer by an adhesive member, the adhesive member having one or more portions removed, thereby forming one or more channels defined there between; and
one or more capture antibodies immobilized on the metal layer, the capture antibodies defining discrete capture zones within the one or more channels. - View Dependent Claims (48)
-
-
49. An optical bio-disc for performing an immunochemical assay, said disc comprising:
-
a substantially circular rotatable substrate having a center and an outer edge, said substrate having formed therein an outer circumferential peripheral reservoir proximal to the outer edge;
a metal layer disposed over said substrate;
a cap portion integrally attached to the metal layer by an adhesive member, the adhesive member having one or more portions removed, thereby forming one or more flow channels defined there between; and
one or more capture antibodies immobilized on the metal layer, the capture antibodies defining discrete capture zones within the one or more channels. - View Dependent Claims (50, 51, 52, 53)
-
-
54. An optical bio-disc, comprising:
-
a rotatable substrate having a center and an outer edge;
an outer reservoir formed in said substrate proximal to said outer edge;
an inner reservoir formed in said substrate proximal to and in fluid communication with said outer reservoir;
a channel layer positioned adjacent said substrate, said channel layer having at least one fluidic channel formed therein which is in fluid communication with said inner reservoir, thereby forming a fluidic circuit; and
a cap portion positioned adjacent said channel layer. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 126)
-
-
72. An optical bio-disc, comprising:
-
a rotatable substrate;
a cap portion having a center and an outer edge;
an outer reservoir formed in said cap portion proximal to said outer edge;
an inner reservoir formed in said cap portion proximal to and in fluid communication with said outer reservoir; and
a channel layer positioned between said substrate and said cap, said channel layer having at least one fluidic channel formed therein which is in fluid communication with said inner reservoir thereby forming a fluidic circuit. - View Dependent Claims (73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 127, 128)
-
-
90. An optical bio-disc, comprising:
-
a rotatable substrate having a center and an outer edge;
a reservoir formed in said substrate proximal to said outer edge;
a channel layer positioned adjacent said substrate, said channel layer having at least one fluidic channel formed therein which is in fluid communication with said reservoir thereby forming a fluidic circuit; and
a cap portion positioned adjacent said channel layer. - View Dependent Claims (92, 93, 94, 136)
-
-
91. An optical bio-disc, comprising:
-
a rotatable substrate;
a cap portion having a center and an outer edge;
a reservoir formed in said cap portion proximal to said outer edge; and
a channel layer positioned between said substrate and said cap, said channel layer having at least one fluidic channel formed therein which is in fluid communication with said reservoir thereby forming a fluidic circuit.
-
- 95. The optical bio-disc according to 94 further comprising a vent port formed in said cap portion, said vent port located in a predetermined location in each of said independent reservoirs to thereby allow venting of air inside said fluidic circuit to prevent air blockage within the fluidic circuit.
-
97. An optical bio-disc, comprising:
-
a rotatable substrate;
a cap portion having a center and an outer edge;
an outer reservoir formed in said cap portion proximal to said outer edge;
an inner reservoir formed in said cap portion proximal to said outer reservoir; and
a channel layer positioned between said substrate and said cap, said channel layer having at least one fluidic channel formed therein which is in fluid communication with said inner reservoir. - View Dependent Claims (98, 99)
-
-
100. A method of making an optical bio-disc, said method of making comprising:
-
providing a substantially circular substrate having a center, an outer edge, and a metal layer associated thereto;
forming a circumferential peripheral waste reservoir, said waste reservoir located proximal said outer edge of said substrate;
depositing one or more capture agents onto said metal layer, thereby forming a capture zone;
incubating said one or more capture agents on said metal layer to thereby facilitate binding of the capture agents onto the metal layer;
washing the capture zone to remove unbound capture agents; and
attaching a cap portion to said metal layer using an adhesive member having flow channels formed therein thereby forming fluidic circuits, said cap portion having at least one inlet and vent port formed therein. - View Dependent Claims (101, 102, 103, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 125, 132, 133, 134)
-
-
104. A method of making an optical bio-disc, said method of making comprising:
-
providing a substantially circular substrate having a center, an outer edge, and a metal layer associated thereto;
forming an outer circumferential peripheral waste reservoir proximal said outer edge of said substrate;
forming an inner circumferential reservoir proximal said outer waste reservoir of said substrate, said outer and inner reservoirs separated by a raised land;
forming pass through ports in said raised land to thereby place said outer and inner reservoirs in fluid communication;
depositing one or more capture agents onto said metal layer, thereby forming a capture zone;
incubating said one or more capture agents on said metal layer to thereby facilitate binding of the capture agents onto the metal layer;
washing the capture zone to remove unbound capture agents; and
attaching a cap portion to said metal layer using an adhesive member having flow channels formed therein thereby forming fluidic circuits, said cap portion having at least one inlet and vent port formed therein. - View Dependent Claims (105, 106, 107, 108, 109, 110, 111, 112, 124, 129, 130, 131)
-
-
137. A method of attaching a capture agent having a reactive amino group onto a carboxy modified polystyrene substrate, said method comprising the steps of:
-
activating the carboxy terminal end of said carboxy modified polystyrene using N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylamino)propyl carbodiimide thereby generating a N-hydroxysuccinimide ester active group; and
attaching said capture agent having an amino group onto the carbonyl of the N-hydroxysuccinimide ester. - View Dependent Claims (148, 149, 150)
-
-
138. A method of attaching a capture agent onto an amino modified polystyrene substrate, said method comprising the steps of:
-
activating said amino modified polystyrene by attaching glutaraldehyde onto the amino terminal end of said amino modified polystyrene in the presence of sodium cyanoborohydride; and
attaching said capture agent onto the aldehyde activated amino modified polystyrene.
-
-
139. A method of attaching a capture agent having a maleimide group attached thereto onto an amino modified polystyrene substrate, said method comprising the steps of:
-
binding a s-acetylthioacetic acid-N-hydroxysuccinimide onto the amino end of said amino modified polystyrene;
removing a protective acetyl group from the sulfur end of the s-acetylthioacetic acid-N-hydroxysuccinimide using hydroxylamine thereby generating a sulfhydryl activated amino modified polystyrene; and
attaching said capture agent having a maleimide group attached thereto onto said sulfhydryl activated amino modified polystyrene.
-
-
140. A method of attaching a sulfhydryl derivatized capture agent onto an amino modified polystyrene substrate, said method comprising the steps of:
-
binding a gamma-maleimidobutyric acid-N-hydroxysuccinimide onto the amino end of said amino modified polystyrene; and
attaching said sulfhydryl derivatized capture agent onto a double bond of the introduced heterocyclic group of the gamma-maleimidobutyric acid.
-
-
141. A method of attaching a sulfhydryl derivatized capture agent onto a polystyrene substrate containing a functional maleimide active group, said method comprising the step of attaching said sulfhydryl derivatized capture agent onto the maleimide active group.
-
142. A method of immobilizing a capture agent having an amino group onto a gold surface, said method comprising the steps of:
-
attaching a mercaptoundecanoic acid molecule onto said gold surface through the thiol terminal group of the mercaptoundecanoic acid;
activating the carboxy terminal end of said mercaptoundecanoic acid molecule using N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylamino)propyl carbodiimide thereby generating a N-hydroxysuccinimide active group; and
attaching said capture agent having an amino group onto the carbonyl group of the N-hydroxysuccinimide ester.
-
-
143. A method of immobilizing a capture agent having a reactive amino group onto a gold surface comprising the steps of:
-
attaching a mercaptoundecanoic acid molecule onto said gold surface through the thiol terminal group of the mercaptoundecanoic acid;
activating the carboxy terminal end of said mercaptoundecanoic acid molecule using N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylamino)propyl carbodiimide thereby generating a N-hydroxysuccinimide ester;
attaching amino groups of bovine serum albumin onto the carbonyl group of the N-hydroxysuccinimide ester;
conjugating a dextran aldehyde crosslinker onto said bovine serum albumin in the presence of sodium cyanoborohydride, said dextran aldehyde crosslinker having high binding capacity for substances with reactive amino groups; and
attaching said capture agent having a reactive amino group onto the said dextran aldehyde crosslinker.
-
-
144. A method of immobilizing a capture agent having a reactive amino group onto a gold surface, said method comprising the steps of:
-
attaching a mercaptoundecanoic acid molecule onto said gold surface through the thiol terminal group of the mercaptoundecanoic acid;
activating the carboxy terminal end of said mercaptoundecanoic acid molecule using N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylamino)propyl carbodiimide thereby generating a first N-hydroxysuccinimide ester active group;
attaching one or more carboxyl groups of bovine serum albumin onto said first N-hydroxysuccinimide ester active group;
activating remaining free carboxyl groups of said bovine serum albumin using N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylamino)propyl carbodiimide thereby generating a second N-hydroxysuccinimide ester active group; and
attaching said capture agent having a reactive amino group onto the carbon of said second N-hydroxysuccinimide ester active group.
-
-
145. A method of immobilizing a capture agent having a reactive amino group onto a gold surface, said method comprising the steps of:
-
attaching a mercaptoundecanoic acid molecule onto said gold surface through the thiol terminal group of the mercaptoundecanoic acid;
activating the carboxy terminal end of said mercaptoundecanoic acid molecule using N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylamino)propyl carbodiimide thereby generating a N-hydroxysuccinimide ester active group;
attaching amino groups of poly-L-lysine onto the carbon of the N-hydroxysuccinimide ester active group;
conjugating a dextran aldehyde crosslinker onto said poly-L-lysine in the presence of sodium cyanoborohydride, said dextran aldehyde crosslinker having high binding capacity for substances with amino groups; and
attaching said capture agent having a reactive amino group onto the said dextran aldehyde crosslinker.
-
-
146. A method of immobilizing a streptavidinated capture agent onto a gold surface, said method comprising the steps of:
-
attaching a mercaptoundecanoic acid molecule onto said gold surface through the thiol terminal group of the mercaptoundecanoic acid;
activating the carboxy terminal end of said mercaptoundecanoic acid molecule using N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylamino)propyl carbodiimide thereby generating a N-hydroxysuccinimide ester active group;
attaching amino groups of a biotinylated bovine serum albumin molecule onto the carbonyl group of the N-hydroxysuccinimide ester active group; and
attaching said streptavidinated capture agent onto said biotinylated bovine serum albumin.
-
-
147. A method of immobilizing a biotinylated capture agent onto a gold surface, said method comprising the steps of:
-
attaching a mercaptoundecanoic acid molecule onto said gold surface through the thiol terminal group of the mercaptoundecanoic acid;
activating the carboxy terminal end of said mercaptoundecanoic acid molecule using N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylamino)propyl carbodiimide thereby generating a N-hydroxysuccinimide ester active group;
attaching amino groups of a streptavidin molecule onto the carbonyl group of the N-hydroxysuccinimide ester active group; and
attaching said biotinylated capture agent onto said streptavidin molecule.
-
-
151. (CANCELED)
-
152. (CANCELED)
-
153. (CANCELED)
Specification