Detection of nucleic acid sequence differences using coupled ligase detection and polymerase chain reactions
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C12Q-001/68
C12P-019/34
C12P-019/00
출원번호
US-0229366
(2005-09-16)
등록번호
US-7429453
(2008-09-30)
발명자
/ 주소
Barany,Francis
Lubin,Matthew
Barany,George
Hammer,Robert P.
출원인 / 주소
Cornell Research Foundation, Inc.
Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
Regents of the University of Minnesota
대리인 / 주소
Nixon Peabody LLP
인용정보
피인용 횟수 :
32인용 특허 :
65
초록▼
The present invention relates to a method for identifying a target nucleotide sequence. This method involves forming a ligation product on a target nucleotide sequence in a ligase detection reaction mixture, amplifying the ligation product to form an amplified ligation product in a polymerase chain
The present invention relates to a method for identifying a target nucleotide sequence. This method involves forming a ligation product on a target nucleotide sequence in a ligase detection reaction mixture, amplifying the ligation product to form an amplified ligation product in a polymerase chain reaction (PCR) mixture, detecting the amplified ligation product, and identifying the target nucleotide sequence. Such coupling of the ligase detection reaction and the polymerase chain reaction permits multiplex detection of nucleic acid sequence differences.
대표청구항▼
What is claimed: 1. A method for identifying a target nucleotide sequence comprising: forming a ligation product on a target nucleotide sequence in a ligase detection reaction mixture; amplifying the ligation product to form an amplified ligation product in a polymerase chain reaction (PCR) mixture
What is claimed: 1. A method for identifying a target nucleotide sequence comprising: forming a ligation product on a target nucleotide sequence in a ligase detection reaction mixture; amplifying the ligation product to form an amplified ligation product in a polymerase chain reaction (PCR) mixture; detecting the amplified ligation product; and identifying the target nucleotide sequence. 2. The method according to claim 1, wherein at least one primer in the PCR mixture comprises a label. 3. The method according to claim 1, wherein the ligation product comprises a unique sequence that can be distinguished from other nucleic acid molecules in the PCR mixture. 4. The method according to claim 3 further comprising: providing a solid support with different capture oligonucleotides immobilized at different particular sites, wherein at least one of the capture oligonucleotides has a nucleotide sequence complementary to the unique nucleotide sequence of the ligation product; contacting the PCR mixture with the solid support under conditions effective to hybridize the amplified ligation product to the capture oligonucleotides in a base-specific manner; and detecting the presence of amplified ligation product captured at a particular site. 5. The method according to claim 1, wherein the ligation product comprises a blocking group outside of its non-ligating ends with the blocking group rendering the ligation product sequence substantially resistant to exonuclease digestion. 6. The method according to claim 5 further comprising: subjecting the ligase detection reaction mixture to exonuclease digestion after the forming of the ligation product. 7. The method according to claim 6, wherein the ligation product comprises deoxy-uracil in place of deoxy-thymidine with the deoxy-uracil rendering the ligation product substantially sensitive to uracil N-glycosylase. 8. The method according to claim 7 further comprising: blending the ligase detection reaction mixture, after forming a ligation product and before amplifying the ligation product, to form an amplified ligation product in a PCR mixture, with a downstream primer complementary to the ligation product, and a polymerase, to form an extension mixture; subjecting the extension mixture to a hybridization treatment, wherein the downstream primer hybridizes to the ligation product and extends to form an extension product complementary to the ligation product; inactivating the polymerase; blending the extension mixture, after said inactivating, with uracil N-glycosylase to form a uracil N-glycosylase digestion mixture; subjecting the extension mixture to uracil-N-glycosylase digestion substantially to destroy ligation product and extension product generated from original target without destroying the extension product generated from the ligation product; blending, after said subjecting the extension mixture to uracil N-glycosylase digestion, a polymerase with the uracil N-glycosylase digestion mixture to form the PCR mixture; and subjecting the PCR mixture to one or more PCR cycles to form an extension product in the first cycle which is substantially the same as the ligation product sequence except comprising deoxy-thymidine in place of deoxy-uracil. 9. The method according to claim 1, wherein the ligase is selected from the group consisting of a Thermus aquaticus ligase, a Thermus thermophilus ligase, an E. coli ligase, T4 ligase, and a Pyrococcus ligase. 10. A method for identifying one or more of a plurality of sequences differing by one or more single-base changes, insertions, deletions, or translocations in a plurality of target nucleotide sequences comprising: producing one or more ligation products from a reaction mixture, wherein said reaction mixture comprises: a ligase; one or more target nucleotide sequences; and one or more oligonucleotide probe sets, each said probe set including (a) a first oligonucleotide probe comprising a first target-specific portion capable of hybridizing to a corresponding target nucleotide sequence and (b) a second oligonucleotide probe comprising a second target-specific portion capable of hybridizing to said corresponding target nucleotide sequence, wherein a ligation product comprising the first and the second target-specific portions is capable of being produced after the first and the second target-specific portions are hybridized to said corresponding target nucleotide sequence, but is not produced when the first and the second target-specific portions are hybridized with one or more mismatches to a nucleotide sequence present in said reaction mixture, wherein each of said one or more ligation products comprises a ligated sequence which includes (1) the first target-specific portion of the first oligonucleotide probe in a corresponding probe set and (2) the second target-specific portion of the second oligonucleotide probe in said corresponding probe set, or complements thereof; subjecting said one or more ligation products to one or more polymerase chain reaction cycles to produce one or more amplification products, each amplification product comprising (1) the ligated sequence of a corresponding ligation product from which said amplification product is amplified, (2) a reporter label, and (3) an addressable array-specific portion, wherein said reporter label and said addressable array-specific portion distinguish said amplification product from other amplification products that comprise other ligated sequences or complements thereof; capturing said one or more amplification products to a solid support; and detecting the reporter labels and the identities of the addressable array-specific portions in said captured amplification products to indicate the presence of one or more target nucleotide sequences in said reaction mixture. 11. A method for identifying one or more of a plurality of sequences differing by one or more single-base changes, insertions, deletions, or translocations in a plurality of target nucleotide sequences comprising: subjecting a reaction mixture to one or more ligase detection reaction cycles to produce one or more ligation products, wherein said reaction mixture comprises: a ligase; one or more target nucleotide sequences; and one or more oligonucleotide probe sets, each said probe set including (a) a first oligonucleotide probe comprising a first target-specific portion capable of hybridizing to a corresponding target nucleotide sequence and (b) a second oligonucleotide probe comprising a second target-specific portion capable of hybridizing to said corresponding target nucleotide sequence, wherein said first and second oligonucleotide probes are ligated together when the first and the second target-specific portions are hybridized adjacent to one another on said corresponding target nucleotide sequence, but are not ligated when the first and the second target-specific portions are hybridized with one or more mismatches to a nucleotide sequence present in said reaction mixture, wherein each of said one or more ligation products comprises a ligated sequence which includes (1) the first target-specific portion of the first oligonucleotide probe in a corresponding probe set and (2) the second target-specific portion of the second oligonucleotide probe in said corresponding probe set, or complements thereof; subjecting said one or more ligation products to one or more polymerase chain reaction cycles to produce one or more amplification products, each amplification product comprising (1) the ligated sequence of a corresponding ligation product from which said amplification product is amplified and (2) an addressable array-specific portion which distinguishes said amplification product from other amplification products that comprise other ligated sequences or complements thereof; capturing said one or more amplification products to a solid support; and detecting the identities of the addressable array-specific portions in said captured amplification products to indicate the presence of one or more target nucleotide sequences in said reaction mixture.
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