Method for the specific determination of DNA sequences by means of parallel amplification
AssigneeBioChip Technologies GmbH
InventorsPatric Zeltz, Stephan Schneider
Life of this patent
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Abstract
The invention concerns a general method for the specific determination of DNA sequences by means of parallel amplification through nested polymerase chain reaction in a combined liquid-phase/solid-phase-DNA-microarray system, together with modifications derived therefrom to determine, for example, point mutations and to sequence DNA sub-regions, which according to a particular embodiment can also be unknown.
Claims20
Method for the specific determination of DNA sequences by means of parallel amplification in a combined liquid-phase/solid-phase-DNA-microarray system by performing a nested polymerase chain reaction using x PCR primer sets each of at least 3 PCR primers P11, P21, P31, P12, P22, P32, P13, P23, P33, . . . P1x, P2x, P3x, whereby x signifies a positive integer and corresponds to the number of DNA sequences to be determined, and whereby for each of the x PCR primer sets
- (a) two outer PCR primers P1, P2 are chosen in such a way that they hybridise onto DNA sub-sequences lying upstream and downstream of the target DNA sequence that is to be amplified,
- (b) one inner PCR primer P3 is chosen in such a way that the one inner PCR primer P3 hybridises onto a DNA sub-sequence lying within the target DNA sequence that is to be determined, and is able to form a P3 extension product, and
- (c) the x outer PCR primers P11, P21, P12, P22, P13, P23, . . . P1x, P2x are present in liquid phase in excess relative to the x inner PCR primers P31, P32, P33, . . . P3x, and
- (d) the x inner PCR primers P31, P32, P33, . . . P3x are present irreversibly bonded to a solid phase at x spatially separated defined positions, forming a DNA microarray;
- the method comprising the steps of:
- (1) providing the x PCR primer sets;
- (2) performing simultaneous amplification, involving a nested polymerase chain reaction, using said primers in both the liquid and solid phase in order to produce a P3 extension product irreversibly bonded to the solid phase, wherein the x outer PCR primers P11, P21, P12, P22, P13, P23, . . . P1x, P2x in the liquid phase are present in a 102 to 1012 -fold excess relative to the x inner PCR primers P31, P32, P33, . . . P3x in the solid phase;
- and
- (3) ascertaining the presence of the P3 extension product at one or more defined positions of the DNA microarray.
Method according to one of the foregoing claims, whereby the solid phase is chosen from the group consisting of metal surfaces, metal surfaces vapour-deposited with SiO2, metal/semimental oxide surfaces, glass surfaces, polymer surfaces, nylon surfaces and nitrocellulose membranes.
Method for the specific determination of DNA sequences by means of parallel amplification in a combined liquid-phase/solid-phase-DNA-microarray system by performing a nested polymerase chain reaction using x PCR primer sets each of at least 3 PCR primers P11, P21, P31, P12, P22, P32, P13, P23, P33, . . . P1x, P2x, P3x, whereby x signifies a positive integer and corresponds to the number of DNA sequences to be determined, and whereby for each of the x PCR primer sets
- (a) two outer PCR primers P1, P2 are chosen in such a way that they hybridise onto DNA sub-sequences lying upstream and downstream of the target DNA sequence that is to be amplified,
- (b) one inner PCR primer P3 is chosen in such a way that the one inner PCR primer P3 hybridises onto a DNA sub-sequence lying within the target DNA sequence that is to be determined, and is able to form a P3 extension product, and
- (c) the x outer PCR primers P11, P21, P12, P22, P13, P23, . . . P1x, P2x are present in liquid phase in excess relative to the x inner PCR primers P31, P32, P33, . . . P3x, and
- (d) the x inner PCR primers P31, P32, P33, . . . P3x are present irreversibly bonded to a solid phase at x spatially separated defined positions, forming a DNA microarray;
- the method comprising the steps of
- (1) providing the x PCR primer sets;
- (2) performing simultaneous amplification, involving a nested polymerase chain reaction, using said primers in both the liquid and solid phase in order to produce a P3 extension product irreversibly bonded to the solid phase, wherein the x outer PCR primers P11, P21, P12, P22, P13, P23, . . . P1x, P2x in the liquid phase are present in a 102 to 1012 -fold excess relative to the x inner PCR primers P31, P32, P33, . . . P3x in the solid phase;
- and
- (3) ascertaining the presence of the P3 extension product at one or more defined positions of the DNA microarray,
- wherein the solid phase, to which the x inner PCR primers P31, P32, P33, . . . P3x are irreversibly bonded, is a surface.
Method for the specific determination of DNA sequences by means of parallel amplification in a combined liquid-phase/solid-phase-DNA-micro array system by performing a nested polymerase chain reaction using x PCR primer sets each of at least 3 PCR primers P11, P21, P31, P12, P22, P32, P13, P23, P33, . . . P1x, P2x, P3x, whereby x signifies a positive integer and corresponds to the number of DNA sequences to be determined, and whereby for each of the x PCR primer sets
- (a) two outer PCR primers P1, P2 are chosen in such a way that they hybridise onto DNA sub-sequences lying upstream and downstream of the target DNA sequence that is to be amplified,
- (b) one inner PCR primer P3 is chosen in such a way that the one inner PCR primer P3 hybridises onto a DNA sub-sequence lying within the target DNA sequence that is to be determined, and is able to form a P3 extension product, and
- (c) the x outer PCR primers P11, P21, P12, P22, P13, P23, . . . P1x, P2x are present in solution in excess relative to the x inner PCR primers P31, P32, P33, . . . P3x, and
- (d) the x inner PCR primers P31, P32, P33, P3x are present irreversibly bonded to a solid phase at x spatially separated defined positions, forming a DNA microarray;
- the method comprising the steps of
- (1) providing the x PCR primer sets;
- (2) performing simultaneous amplification, involving a nested polymerase chain reaction, using said primers in both the solution and the solid phase in order to produce a P3 extension product irreversibly bonded to the solid phase, wherein the x outer PCR primers P11, P21, P12, P22, P13, P23,. . . P1x, P2x in the solution are present in a 102 to 102-fold excess relative to the x inner PCR primers P31, P32, P33, . . . P3x in the solid phase;
- and
- (3) ascertaining the presence of the P3 extension product at one or more defined positions of the DNA microarray,
- wherein the solid phase, to which the x inner PCR primers P31, P32, P33, . . . P3x are irreversibly bonded, is a non-porous surface.
Method for the specific determination of DNA sequences by means of parallel amplification in a combined liquid-phase/solid-phase-DNA-microarray system by performing a nested polymerase chain reaction using x PCR primer sets each of at least 3 PCR primers P11, P21, P31, P12, P22, P32, P13, P23, P33, . . . P1x, P2x, P3x, whereby x signifies a positive integer and corresponds to the number of DNA sequences to be determined, and whereby for each of the x PCR primer sets
- (a) two outer PCR primers P1, P2 are chosen in such a way that they hybridise onto DNA sub-sequences lying upstream and downstream of the target DNA sequence that is to be amplified,
- (b) one inner PCR primer P3 is chosen in such a way that the one inner PCR primer P3 hybridises onto a DNA sub-sequence lying within the target DNA sequence that is to be determined, and is able to form a P3 extension product, and
- (c) the x outer PCR primers P11, P21, P12, P22, P13, P23, P1x, P2x are present in solution in excess relative to the x inner PCR primers P31, P32, P33, P3x, and
- (d) the x inner PCR primers P31, P32, P33, . . . P3x are present irreversibly bonded to a solid phase at x spatially separated defined positions, forming a DNA microarray;
- the method comprising the steps of
- (1) providing the x PCR primer sets;
- (2) performing simultaneous amplification, involving a nested polymerase chain reaction, using said primers in both the solution and the solid phase in order to produce a P3 extension product irreversibly bonded to the solid phase, wherein the x outer PCR primers P11, P21, P12, P22, P13, P23, . . . P1x, P2x in the solution are present in a 102 to 1012-fold excess relative to the x inner PCR primers P31, P32, P33, . . . P3x in the solid phase;
- and
- (3) ascertaining the presence of the P3 extension product at one or more defined positions of the DNA microarray,
- wherein the solid phase, to which the x inner PCR primers P31, P32, P33, . . . P3x are irreversibly bonded, is a non-porous surface, wherein the non-porous surface is a glass surface and the x inner PCR primers P31, P32, P33, . . . P3x are irreversibly bonded to the glass surface via a bifunctional silane that has one, two or three hydrolysable atom(s) or group(s) on the silicon atom.
Dependencies are inferred from the claim text.