| Patent application number | Description | Published |
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| 20080305478 | Processes Using Dual Specificity Oligonucleotide and Dual Specificity Oligonucleotide - The present invention relates to various processes by a template-dependent extension reaction using a dual specificity oligonucleotide and a dual specificity oligonucleotide composed of three different Tm portions therefor. Demonstrated in the present invention are the features of the dual specificity oligonucleotide, which are high hybridization specificity and mismatch tolerance. | 12-11-2008 |
| 20090298128 | Method for Amplifying Unknown DNA Sequence Adjacent to Known Sequence - The present invention relates to a method for amplifying an unknown nucleotide sequence adjacent to a known nucleotide sequence, which comprises the step of (a) performing a primary amplification of the unknown nucleotide sequence using a DNA walking annealing control primer (DW-ACP) and a first target specific primer (TSP) hybridizable with a site on the known nucleotide sequence; in which the step (a) comprises: (a-1) performing a first-stage amplification of the unknown nucleotide sequence at a first annealing temperature, using a first degenerate DW-ACP containing (i) a degenerate random nucleotide sequence to hybridize with the unknown nucleotide sequence and (ii) a hybridizing nucleotide sequence substantially complementary to a site on the unknown nucleotide sequence, wherein the first annealing temperature enables the first degenerate DW-ACP to function as a primer, whereby a first degenerate DW-ACP extension product is generated; and (a-2) performing a second-stage amplification of the amplification product generated from step (a-1) at a second annealing temperature which is higher than the first annealing temperature, using the first degenerate DW-ACP as used in the step (a-1) and the first TSP, under conditions in which each primer anneals the its target nucleotide sequence, whereby a primary amplification product is generated. | 12-03-2009 |
| 20100291634 | Annealing control primer and its uses - The present invention relates to an annealing control primer for improving annealing specificity in nucleic acid amplification and its applications to all fields of nucleic acid amplification-involved technology. The present primer comprises (a) a 3′-end portion having a hybridizing nucleotide sequence substantially complementary to a site on a template nucleic acid to hybridize therewith; (b) a 5′-end portion having a pre-selected arbitrary nucleotide sequence; and (c) a regulator portion positioned between said 3′-end portion and said 5′-end portion comprising at least one universal base or non-discriminatory base analog, whereby said regulator portion is capable of regulating an annealing portion of said primer in association with annealing temperature. | 11-18-2010 |
| 20120135473 | PROCESSES USING DUAL SPECIFICITY OLIGONUCLEOTIDE AND DUAL SPECIFICITY OLIGONUCLEOTIDE - The present invention relates to various processes by a template-dependent extension reaction using a dual specificity oligonucleotide and a dual specificity oligonucleotide composed of three different Tm portions therefor. Demonstrated in the present invention are the features of the dual specificity oligonucleotide, which are high hybridization specificity and mismatch tolerance. | 05-31-2012 |
| 20120164692 | ANNEALING CONTROL PRIMER AND ITS USES - The present invention relates to an annealing control primer for improving annealing specificity in nucleic acid amplification and its applications to all fields of nucleic acid amplification-involved technology. The present primer comprises (a) a 3′-end portion having a hybridizing nucleotide sequence substantially complementary to a site on a template nucleic acid to hybridize therewith; (b) a 5′-end portion having a pre-selected arbitrary nucleotide sequence; and (c) a regulator portion positioned between said 3′-end portion and said 5′-end portion comprising at least one universal base or non-discriminatory base analog, whereby said regulator portion is capable of regulating an annealing portion of said primer in association with annealing temperature. | 06-28-2012 |
| 20120190030 | Detection of Target Nucleic Acid Sequences by Cyclic Exonucleolytic Reactions - The present invention relates to the detection of a target nucleic acid sequence by a cyclic exonucleolytic reaction. The present method enabling to generate signals by probe digestion with no help of primers and to amplify signals with no help of simultaneous target amplification reactions may enable to detect multiple target sequences without any problems accounted in the conventional real-time PCR methods such as false positive signals and difficulties in oligonucleotides (primer and probe) selection and reaction condition optimization. | 07-26-2012 |
| 20120219955 | THD PRIMER TARGET DETECTION - The present invention relates to the detection of a target nucleic acid sequence using a target hybridization and detection primer (THD primer). The present invention allows for both a target amplification and a signal amplification by introducing a label into a primer used in PCR reactions, ensuring a real-time target detection by PCR reaction by no use of complicated oligonucleotides. The present invention could completely be free from the troublesome matters and shortcomings associated with conventional real-time PCR methods. The present invention allows for successful real-time target detection by using only a labeled primer. This feature makes it possible that the present invention exhibits excellent real-time target detection in multiplex manner. | 08-30-2012 |
| 20120220468 | TD PROBE AND ITS USES - The present invention relates to a target discriminative probe (TD probe) and its uses or applications. The TD probe is hybridized with a target nucleic acid sequence through both of the 5′-second hybridization portion and the 3′-first hybridization portion. When the TD probe is hybridized with a non-target nucleic acid sequence, both the 5′-second hybridization portion and the separation portion are not hybridized with the non-target nucleic acid sequence such that both portions form a single strand due to its low Tm value. As such, the TD probe exhibits distinctly different hybridization patterns for each of the target and the non-target nucleic acid sequence, discriminating the target nucleic acid sequence from the non-target nucleic acid sequence with much higher specificity. | 08-30-2012 |
| 20120258447 | REAL-TIME MULTIPLEXING DETECTION OF TARGET NUCLEIC ACID SEQUENCES WITH ELIMINATION OF FALSE SIGNALS - The present invention relates to the real-time multiplex detection of at least three target nucleic acid sequences with elimination of false positive signals. Unlikely to conventional real-time multiplex PCR methods, the present invention comprises two different amplification reactions in different reaction vessels from each other: a primary multiplex PCR for obtaining amplicons and a secondary nested real-time multiplex PCR using the amplicons. The present invention permits to eliminate the false positive signals generated by the dimer formation of labeled primers, false positive signals | 10-11-2012 |
| 20120264643 | TSG PRIMER TARGET DETECTION - The present invention relates to the detection of a target nucleic acid sequence in a real-time manner using a target signal generating primer (TSG primer) having dual interactive labels. The present invention allows for both target amplification and signal amplification by introducing dual interactive labels into a primer used in PCR reactions, ensuring real-time target detection by PCR reactions without the use of complicated oligonucleotides. The present invention could be free from the troublesome matters and shortcomings associated with conventional real-time PCR methods. The present invention allows for successful real-time target detection by using only a labeled primer. Also, the present invention can obtain strong signals indicative of the presence of target nucleic acid sequences in both a liquid phase and solid phase. | 10-18-2012 |
| 20130090464 | Process Using Dual Specificity Oligonucleotide and Dual Specificity Oligonucleotide - The present invention relates to various processes by a template-dependent extension reaction using a dual specificity oligonucleotide and a dual specificity oligonucleotide composed of three different Tm portions therefor. Demonstrated in the present invention are the features of the dual specificity oligonucleotide, which are high hybridization specificity and mismatch tolerance. | 04-11-2013 |
| 20130109588 | DETECTION OF TARGET NUCLEIC ACID SEQUENCES BY PTO CLEAVAGE AND EXTENSION ASSAY | 05-02-2013 |
| 20130190208 | DETECTION OF TARGET NUCLEIC ACID SEQUENCES BY EXONUCLEOLYTIC ACTIVITY USING SINGLE-LABELED IMMOBILIZED PROBES ON SOLID PHASE - The present invention relates to a novel method for detection of target nucleic acid sequences by cyclic exonucleolytic reactions (CER) or exonucleolytic reactions (ER) using single-labeled immobilized probes on a solid phase. The present invention enables to detect target nucleic acid sequences on a solid phase using single-labeled systems. Comparing with multiple-labeled systems such as dual labeling, the present invention using single-labeled probes has excellent advantages in light of convenience and cost effectiveness in probe design and preparation. Furthermore, the measurement of changes of the signal decrease during reactions is responsible for more accurate qualitative and quantitative analysis of target nucleic acid sequences. | 07-25-2013 |
| 20130252827 | DETECTION OF TARGET NUCLEIC ACID SEQUENCES USING DUAL-LABELED IMMOBILIZED PROBES ON SOLID PHASE - The present invention relates to a novel method for detection of target nucleic acid sequences on a solid phase using dual-labeled immobilized probes and its resistance to a 5′ to 3′ exonuclease activity of a DNA polymerase. Because the label is remained on the solid substrate by resistance to nucleases due to labeling of a base component the internal nucleotide, the present invention requires no consideration of a suitability of position of the label for remaining on the solid substrate. The present invention ensures to minimize background signal by positioning labels at a site on probes suitable to maximize quenching efficiency of the dual label system, since it permits to freely determine the position of the internal label on probes. | 09-26-2013 |
| 20140073534 | DETECTION OF TARGET NUCLEIC ACID SEQUENCES BY PO CLEAVAGE AND HYBRIDIZATION - The present invention relates to the detection of a target nucleic acid sequence by a POCH (PO Cleavage and Hybridization) assay on a solid substrate. The present invention detects the target nucleic acid sequence by use of in which the PO (Probing Oligonucleotide) hybridized with the target nucleic acid sequence is cleaved and the cleavage of the PO is detected by hybridization with the CO (Capturing Oligonucleotide). In the present invention, an uncleaved PO is hybridized with the CO immobilized onto the solid substrate. The designs of the PO and the CO are convenient and the optimization of reaction conditions is routinely easy in the present invention. Where the detection of signal on the solid substrate is continuously performed along with repetition of cleavage of the POs in the present invention, the number of the POs cleaved is increased upon the repetition number of the cleavage reaction and the signal is changed in parallel with the number of the POs cleaved. Then, the target nucleic acid sequence can be detected in a real-time manner. In contrast, the change of the signal is not observed in the absence of the target nucleic acid sequence. | 03-13-2014 |
| 20140163215 | ANNEALING CONTROL PRIMER AND ITS USES - The present invention relates to an annealing control primer for improving annealing specificity in nucleic acid amplification and its applications to all fields of nucleic acid amplification-involved technology. The present primer comprises (a) a 3′-end portion having a hybridizing nucleotide sequence substantially complementary to a site on a template nucleic acid to hybridize therewith; (b) a 5′-end portion having a pre-selected arbitrary nucleotide sequence; and (c) a regulator portion positioned between said 3′-end portion and said 5′-end portion comprising at least one universal base or non-discriminatory base analog, whereby said regulator portion is capable of regulating an annealing portion of said primer in association with annealing temperature. | 06-12-2014 |
| 20150072887 | DETECTION OF TARGET NUCLEIC ACID SEQUENCE BY PTO CLEAVAGE AND EXTENSION-DEPENDENT SIGNALING OLIGONUCLEOTIDE HYBRIDIZATION ASSAY - The present invention relates to the detection of a target nucleic acid sequence by a PCE-SH (PTO Cleavage and Extension-Dependent Signaling Oligonucleotide Hybridization) assay. The present invention does not use probes to be hybridized with target nucleic acid sequences for providing target signals. Interestingly, the present invention uses probes (signaling oligonucleotides) to be hybridized with the extended strand formed in a target-dependent manner in which the extended strand is synthesized using the CTO artificially selected as templates. | 03-12-2015 |
| 20150086984 | DETECTION OF TARGET NUCLEIC ACID SEQUENCES BY PTO CLEAVAGE AND EXTENSION ASSAY - The present invention relates to the detection of a target nucleic acid sequence by a PTOCE (PTO Cleavage and Extension) assay. The present invention detects a target nucleic acid sequence in which the PTO (Probing and Tagging Oligonucleotide) hybridized with the target nucleic acid sequence is cleaved to release a fragment and the fragment is hybridized with the CTO (Capturing and Templating Oligonucleotide) to form an extended duplex, followed by detecting the presence of the extended duplex. The extended duplex provides signals (generation, increase, extinguishment or decrease of signals) from labels indicating the presence of the extended duplex and has adjustable T | 03-26-2015 |
