Macroporous support for chemical amplification reactions

• US 20060263799A1
• Filed: 02/17/2006
• Published: 11/23/2006
• Est. Priority Date: 02/18/2005
• Status: Abandoned Application

• Current Assignee: Infineon Technologies AG
• Original Assignee: Infineon Technologies AG
• Inventors: Haneder, Thomas, Dertinger, Stephan, Kluehr, Marco
• Application Number:
  US11/357,731
• Publication Number:
  US 20060263799A1
• Time in Patent Office: Days
• US Class Current: 435/6
• CPC Class Codes: B01L 2200/16 Reagents, handling or storing thereof
• CPC Class Codes: B01L 2300/069 Absorbents; Gels to retain a fluid
• CPC Class Codes: B01L 2300/0819 Microarrays; Biochips
• CPC Class Codes: B01L 2300/0893 having a very large number of wells, microfabricated wells
• CPC Class Codes: B01L 3/50857 using arrays or bundles of open capillaries for holding samples
• CPC Class Codes: C12Q 1/686 Polymerase chain reaction [PCR]
• CPC Class Codes: C12Q 2523/308 Adsorption or desorption

Abstract

A method for carrying out an amplification of nucleic acids in pores of a two-dimensionally designed macroporous support material according to one embodiment includes the step of providing a predetermined part of a reaction mixture necessary for the amplification of a nucleic acid in pores of the support material. A device for carrying out the amplification of nucleic acids according to one embodiment includes a two-dimensionally designed macroporous support material having a multiplicity of pores, wherein a predetermined part of a reaction mixture for carrying out an amplification of nucleic acids is provided in the pores.

Claims

1. A method for amplifying nucleic acids in pores of a two-dimensionally designed macroporous support material which includes first and second surfaces lying opposite each other, wherein a multiplicity of discrete pores with a diameter in the range of from 500 nm to 100 μ

m, an aspect ratio of pore depth to pore aperture of at least 10;

1, and a pore density of from 10⁴ to 10⁸/cm² are arranged distributed over an entire surface region, wherein the method comprises the steps of;

(a) providing a predetermined part of a reaction mixture suitable for the amplification reaction in at least one region of the support material which includes at least two pores, such that the part of the reaction mixture is bound non-covalently to the pore wall of the support material so that a reaction region is thereby simultaneously defined on the support material surface;

(b) adding a sample over the entire support material, the sample containing the part of the reaction mixture necessary for the completion of an amplification reaction;

(c) conducting the amplification reaction; and

(d) detecting at least one amplification product.

2. The method according to claim 1, further comprising the step of:

providing at least one further part of a reaction mixture suitable for the amplification reaction, the composition of which differs from the composition of the part of the reaction mixture in step (a) by at least one compound or by the concentration of at least one compound, in at least one second region of the support material which comprises at least two pores and is different from the region in step (a).

3. The method according to claim 1, wherein the predetermined parts of a reaction mixture suitable for the amplification reaction have been bound to the pore wall of the support material by drying-in an aqueous solution containing these parts.

4. The method according to claim 1, wherein the macroporous support material is one of a macroporous silicon and partially oxidized macroporous silicon.

5. A device comprising a two-dimensionally designed macroporous support material which includes first and second surfaces lying opposite each other, wherein a multiplicity of discrete pores with a diameter in the range of from 500 nm to 100 μ

m, an aspect ratio of pore depth to pore aperture of at least 10;

1, and a pore density of from 10⁴ to 10⁸/cm² are arranged and distributed over an entire surface region, wherein the device comprises at least one region in which a predetermined part of a reaction mixture for carrying out an amplification of nucleic acids is bound non-covalently in at least two pores.

6. The device according to claim 5, wherein the device comprises at least one further region in which a predetermined part of the reaction mixture for carrying out an amplification of nucleic acids, the composition of which differs from the composition of the part of the reaction mixture in the first region by at least one compound, is bound non-covalently in at least two pores.

7. The device according to claim 5, wherein one surface side of the support material is closed by a covering.

8. The device according to claim 5, wherein the macroporous support material is one of macroporous silicon and partially oxidized macroporous silicon.

9. The device according to claim 5, wherein the pores have a diameter in the range from 2 to 20 μ

m.

10. The device according to claim 5, wherein the support material has a thickness of between 100 and 5000 μ

m.

11. A method for amplification of nucleic acids that includes incorporating into a device a two-dimensionally designed macroporous support material which comprises first and second surfaces lying opposite each other, wherein a multiplicity of discrete pores with a diameter in the range of from 500 nm to 100 μ

m, an aspect ratio of pore depth to pore aperture of at least 10;

1, and a pore density of from 10⁴ to 10⁸/cm² are arranged and distributed over an entire surface region.

12. The method according to claim 11, further including the steps of:

disposing the device between a first holder and a second holder such that the device is securely held in place therebetween, with the device being inertly sealed along first and second faces thereof that face the first and second holders, respectively;

providing a transparent window between the first face of the device and the first holder; and

providing a reflective, non-light scattering base between the second face of the device and the second holder.

13. The method according to claim 12, further including the step of:

pressing the first and second holders such that the window and the base are pressed together resulting in the device being sealed.

14. The method according to claim 13, further including the step of:

providing a reaction chamber above the first face of the device and between the window and the device.