Primer middle sequence interference PCR technology
First Claim
Patent Images
1. A method for inhibiting primer dimer formation and non-specific amplification of a target sequence therefrom in a polymerase chain reaction (PCR), the method comprising preparing a PCR reaction system for amplifying the target sequence, said PCR reaction system comprising:
- (a) a first primer and a second primer which, when aligned in the 5′
to 3 direction, share an identical Intermediate Domain (ID) sequence of 5-9 consecutive bases, wherein both primers comprise a 3′
region configured to specifically bind and amplify the target sequence;
(b) a 5′
antisense sequence of 5-7 consecutive bases, which antisense sequence is complementary to said Intermediate Domain (ID) sequence, wherein the antisense sequence is configured to competitively bind said intermediate Domain to disturb polymerization between the primers, is configured to bind to the ID sequence intra-molecularly such that the first and/or second primer is folded, and does not affect the primers specifically binding and amplifying the target sequence while inhibiting primer dimer formation and non-specific amplification therefrom.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is a primer middle sequence interference PCR method, and the method uses one segment of a non-complemented or same-sequence base of the middle sequence of primers to perform antisense interference inside and outside the primer molecules, so as to competitively destroy the polymerization among the primers to selectively inhibit amplification of the primer dimer (PD).
7 Citations
17 Claims
-
1. A method for inhibiting primer dimer formation and non-specific amplification of a target sequence therefrom in a polymerase chain reaction (PCR), the method comprising preparing a PCR reaction system for amplifying the target sequence, said PCR reaction system comprising:
- (a) a first primer and a second primer which, when aligned in the 5′
to 3 direction, share an identical Intermediate Domain (ID) sequence of 5-9 consecutive bases, wherein both primers comprise a 3′
region configured to specifically bind and amplify the target sequence;
(b) a 5′
antisense sequence of 5-7 consecutive bases, which antisense sequence is complementary to said Intermediate Domain (ID) sequence, wherein the antisense sequence is configured to competitively bind said intermediate Domain to disturb polymerization between the primers, is configured to bind to the ID sequence intra-molecularly such that the first and/or second primer is folded, and does not affect the primers specifically binding and amplifying the target sequence while inhibiting primer dimer formation and non-specific amplification therefrom. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- (a) a first primer and a second primer which, when aligned in the 5′
Specification