Chip and method for analyzing enzyme immunity

• US 20050142624A1
• Filed: 11/08/2002
• Published: 06/30/2005
• Est. Priority Date: 01/24/2002
• Status: Abandoned Application

• Current Assignee: Kanagawa Academy of Science and Technology
• Original Assignee: Kanagawa Academy of Science and Technology
• Inventors: Tokeshi, Manabu, Kitamori, Takehiko, Sato, Kiichi
• Application Number:
  US10/502,256
• Publication Number:
  US 20050142624A1
• Time in Patent Office: Days
• US Class Current: 435/7.920
• CPC Class Codes: B01L 2200/0668 Trapping microscopic beads
• CPC Class Codes: B01L 2300/0816 Cards, e.g. flat sample carriers usually with flow in two horizontal directions
• CPC Class Codes: B01L 2300/0867 Multiple inlets and one sample wells, e.g. mixing, dilution
• CPC Class Codes: B01L 3/502753 characterised by bulk separation arrangements on lab-on-a-chip devices, e.g. for filtration or centrifugation separation in general B01D; microapparatus for analysis using electrophoresis G01N27/44791; sample preparation G01N1/28
• CPC Class Codes: G01N 33/54346 Nanoparticles
• CPC Class Codes: G01N 33/54366 Apparatus specially adapted for solid-phase testing
• CPC Class Codes: G01N 33/54386 Analytical elements

Abstract

An enzyme immunoassay chip having, as micro channels, a reaction liquid leading-in flow passage part, a reaction flow passage part, and detection flow passage part sequentially disposed on a substrate continuously to each other, comprising an installed part for bead-bodies supporting antibodies and the bead-body flow stopping part formed in the micro channel of the reaction flow passage part, wherein enzyme reactive product flowing beyond the flow stopping part can be analyzed by using the chip.

Claims

1. An enzyme immunoassay chip comprising a reaction liquid leading-in flow passage part, a reaction flow passage part and a detection flow passage part disposed successively as a micro channel communicating with each other on a substrate, characterized in that the reaction flow passage part micro channel is provided with an inlet part for bead-bodies supporting antibodies, and a flow stopping part for the bead-body.

2. The enzyme immunoassay chip according to claim 1, characterized in that the width or the depth of the reaction flow passage part is sufficiently narrow or shallow for stopping the flow of the bead-body at the flow stopping part of the bead-body with the antibody supported.

3. The enzyme immunoassay chip according to claim 1, characterized in that a plurality of the reaction flow passage part micro channels disposed side by side communicate with a detection flow passage part micro channel on the front side with respect to the detection point.

4. An enzyme immunoassay method using the analysis chip according to claim 1, characterized in that enzyme reaction products produced by the antigen antibody reaction with the enzyme in the reaction flow passage part micro channel as the label is tested by the detection flow passage part.

5. The enzyme immunoassay method according to claim 4, characterized in that the enzyme reaction product is detected without contact.

6. The enzyme immunoassay method according to claim 5, characterized in that the enzyme reaction product is detected by a thermal lens microscope system.

7. The enzyme immunoassay chip according to claim 2, characterized in that a plurality of the reaction flow passage part micro channels disposed side by side communicate with a detection flow passage part micro channel on the front side with respect to the detection point.

8. An enzyme immunoassay method using the analysis chip according to claim 2, characterized in that enzyme reaction products produced by the antigen antibody reaction with the enzyme in the reaction flow passage part micro channel as the label is tested by the detection flow passage part.

9. An enzyme immunoassay method using the analysis chip according to claim 3, characterized in that enzyme reaction products produced by the antigen antibody reaction with the enzyme in the reaction flow passage part micro channel as the label is tested by the detection flow passage part.

10. An enzyme immunoassay method using the analysis chip according to claim 7, characterized in that enzyme reaction products produced by the antigen antibody reaction with the enzyme in the reaction flow passage part micro channel as the label is tested by the detection flow passage part.

11. The enzyme immunoassay method according to claim 8, characterized in that the enzyme reaction product is detected without contact.

12. The enzyme immunoassay method according to claim 9, characterized in that the enzyme reaction product is detected without contact.

13. The enzyme immunoassay method according to claim 10, characterized in that the enzyme reaction product is detected without contact.

14. The enzyme immunoassay method according to claim 8, characterized in that the enzyme reaction product is detected by a thermal lens microscope system.

15. The enzyme immunoassay method according to claim 9, characterized in that the enzyme reaction product is detected by a thermal lens microscope system.

16. The enzyme immunoassay method according to claim 10, characterized in that the enzyme reaction product is detected by a thermal lens microscope system.

17. The enzyme immunoassay method according to claim 11, characterized in that the enzyme reaction product is detected by a thermal lens microscope system.

18. The enzyme immunoassay method according to claim 12, characterized in that the enzyme reaction product is detected by a thermal lens microscope system.

19. The enzyme immunoassay method according to claim 13, characterized in that the enzyme reaction product is detected by a thermal lens microscope system.