Patents Assigned to Seegene, Inc.
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Patent number: 8632977Abstract: 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.Type: GrantFiled: February 23, 2012Date of Patent: January 21, 2014Assignee: Seegene, Inc.Inventor: Jong-Yoon Chun
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Publication number: 20130252827Abstract: 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.Type: ApplicationFiled: October 20, 2011Publication date: September 26, 2013Applicant: SEEGENE, INC.Inventor: Jong Yoon Chun
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Publication number: 20130190208Abstract: 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.Type: ApplicationFiled: December 23, 2010Publication date: July 25, 2013Applicant: SEEGENE, INC.Inventors: Jong Yoon Chun, Young Jo Lee
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Publication number: 20130109588Abstract: 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 Tm value, which are well adoptable for detection of the presence of the target nucleic acid sequence.Type: ApplicationFiled: January 29, 2008Publication date: May 2, 2013Applicant: Seegene Inc.Inventors: Jong Yoon Chun, Young Jo Lee
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Publication number: 20130090464Abstract: 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.Type: ApplicationFiled: November 8, 2012Publication date: April 11, 2013Applicant: SEEGENE, INC.Inventor: SEEGENE, INC.
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Patent number: 8323895Abstract: 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.Type: GrantFiled: December 19, 2011Date of Patent: December 4, 2012Assignee: Seegene, Inc.Inventor: Jong-Yoon Chun
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Publication number: 20120264643Abstract: 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.Type: ApplicationFiled: March 26, 2010Publication date: October 18, 2012Applicant: Seegene, Inc.Inventors: Jong Yoon Chun, In Taek Hwang
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Publication number: 20120258447Abstract: 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.Type: ApplicationFiled: March 15, 2010Publication date: October 11, 2012Applicant: SEEGENE, INCInventor: Jong Yoon Chun
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Publication number: 20120219955Abstract: 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.Type: ApplicationFiled: November 28, 2009Publication date: August 30, 2012Applicant: Seegene, Inc.Inventors: Jong Yoon Chun, In Taek Hwang, Young Jo Lee
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Publication number: 20120220468Abstract: 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.Type: ApplicationFiled: September 2, 2010Publication date: August 30, 2012Applicant: SEEGENE, INC.Inventors: Jong Yoon Chun, In Taek Hwang, Sang Kil Lee
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Publication number: 20120190030Abstract: 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.Type: ApplicationFiled: April 9, 2010Publication date: July 26, 2012Applicant: SEEGENE, INC.Inventors: Jong Yoon Chun, In Taek Hwang
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Publication number: 20120164692Abstract: 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.Type: ApplicationFiled: February 23, 2012Publication date: June 28, 2012Applicant: Seegene, Inc.Inventor: Jong-Yoon CHUN
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Patent number: 8192940Abstract: The present invention relates to a method for amplifying an unknown nucleotide sequence adjacent to a known nucleotide sequence, which comprises the step of performing an amplification of the unknown nucleotide sequence using a DNA walking annealing control primer (DW-ACP) and a target specific primer (TSP) hybridizable with a site on the known nucleotide sequence.Type: GrantFiled: May 4, 2006Date of Patent: June 5, 2012Assignee: Seegene, Inc.Inventor: Jong Yoon Chun
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Publication number: 20120135473Abstract: 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.Type: ApplicationFiled: December 19, 2011Publication date: May 31, 2012Applicant: Seegene, Inc.Inventor: Jong-Yoon CHUN
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Patent number: 8124346Abstract: 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.Type: GrantFiled: July 21, 2009Date of Patent: February 28, 2012Assignee: Seegene, Inc.Inventor: Jong-Yoon Chun
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Patent number: 8092997Abstract: 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.Type: GrantFiled: March 3, 2006Date of Patent: January 10, 2012Assignee: Seegene, Inc.Inventor: Jong-Yoon Chun
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Patent number: 8058032Abstract: 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 said unknown nucleotide sequence using a DNA walking annealing control primer (DW-ACP) and a first target-specific primer; in which said step (a) comprises: (a-1) performing a first-stage amplification of said unknown nucleotide sequence at a first annealing temperature, comprising at least one cycle of primer annealing, primer extending and denaturing using a first degenerate DW-ACP containing a degenerate random nucleotide sequence to hybridize with said unknown nucleotide sequence and a hybridizing nucleotide sequence substantially complementary to a site on said unknown nucleotide sequence; and (a-2) performing a second-stage amplification at a second annealing temperature to render said first degenerate DW-ACP not to function as a primer.Type: GrantFiled: November 10, 2003Date of Patent: November 15, 2011Assignee: Seegene, Inc.Inventor: Jong-Yoon Chun
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Patent number: 7579154Abstract: 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.Type: GrantFiled: January 10, 2007Date of Patent: August 25, 2009Assignee: Seegene, Inc.Inventor: Jong-Yoon Chun
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Publication number: 20070172824Abstract: 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 said unknown nucleotide sequence using a DNA walking annealing control primer (DW-ACP) and a first target-specific primer; in which said step (a) comprises: (a-1) performing a first-stage amplification of said unknown nucleotide sequence at a first annealing temperature, comprising at least one cycle of primer annealing, primer extending and denaturing using a first degenerate DW-ACP containing a degenerate random nucleotide sequence to hybridize with said unknown nucleotide sequence and a hybridizing nucleotide sequence substantially complementary to a site on said unknown nucleotide sequence; and (a-2) performing a second-stage amplification at a second annealing temperature to render said first degenerate DW-ACP not to function as a primer.Type: ApplicationFiled: November 10, 2003Publication date: July 26, 2007Applicant: SEEGENE, IncInventor: Jong-Yoon Chun