摘要:
The present invention is to provide a pretreatment method that allows RNA to be detected promptly and simply. RNA degradation activity due to lactoferrin present in the human rhinal mucosa is inhibited, for example, by adding iron ion and carbonate ion to a biological sample that contains the human rhinal mucosa. With the pretreated biological sample, an RNA virus gene can be amplified by a reverse transcriptase. Iron ion and carbonate ion can also inhibit reverse transcriptase inhibition due to lysozyme C contained in the human rhinal mucosa. Further, it is preferable to remove the envelope of the RNA virus by adding SDS to the biological sample that contains the human rhinal mucosa.
摘要:
The present invention is to provide a pretreatment method that allows RNA to be detected promptly and simply. RNA degradation activity due to lactoferrin present in the human rhinal mucosa is inhibited, for example, by adding iron ion and carbonate ion to a biological sample that contains the human rhinal mucosa. With the pretreated biological sample, an RNA virus gene can be amplified by a reverse transcriptase. Iron ion and carbonate ion can also inhibit reverse transcriptase inhibition due to lysozyme C contained in the human rhinal mucosa. Further, it is preferable to remove the envelope of the RNA virus by adding SDS to the biological sample that contains the human rhinal mucosa.
摘要:
A method for determining the presence or absence of a mutation on the basis of the presence or absence of amplification with high reliability is provided. A target sequence including a target site contained in a sample nucleic acid is amplified using a primer that can hybridize to a region including the target site contained in the sample nucleic acid in the presence of a novel MutS having an amino acid sequence of SEQ ID NO: 2, and then the presence or absence of a mutation at the target site is determined on the basis of the presence or absence of amplification. The novel MutS binds more specifically to a mismatched base pair than to a fully-matched base pair, whereby an extension reaction caused by a mismatch-binding primer is suppressed. Thus, according to the present invention, the presence or absence of a mutation can be determined with high reliability.
摘要翻译:提供了一种基于高可靠性的扩增的存在或不存在来确定突变的存在或不存在的方法。 包含样品核酸中包含的靶位点的靶序列使用可以在含有氨基酸序列SEQ ID NO的新型MutS的存在下与包含在样品核酸中的靶位点的区域杂交的引物进行扩增 :2,然后基于扩增的存在或不存在来确定靶位点处的突变的存在或不存在。 新的MutS更具体地结合失配的碱基对而不是完全匹配的碱基对,由此抑制由错配结合引物引起的延伸反应。 因此,根据本发明,可以高可靠性确定突变的存在或不存在。
摘要:
The present invention provides a primer set including primers that can be designed easily, with which an amplification distance can be shortened. Provided is a primer set for use in a method for isothermally amplifying a target nucleic acid sequence 4. The primer set includes a first primer 1F and a second primer 1R. The first primer 1F includes, on the 3′ side thereof, a sequence (A′) that can hybridize to a sequence (A) on the 3′ side of the target nucleic acid sequence. The second primer 1R includes, on the 3′ side thereof, a sequence (B′) that can hybridize to a sequence (B) on the 3′ side of either a strand extended from the first primer or a complementary strand of the target nucleic acid sequence 4. The first primer 1F and the second primer 1R include, on the 5′ sides thereof, sequences (C) that are substantially identical to each other.
摘要:
The present invention provides a primer set including primers that can be designed easily, with which an amplification distance can be shortened. Provided is a primer set for use in a method for isothermally amplifying a target nucleic acid sequence 4. The primer set includes a first primer 1F and a second primer 1R. The first primer 1F includes, on the 3′ side thereof, a sequence (A′) that can hybridize to a sequence (A) on the 3′ side of the target nucleic acid sequence. The second primer 1R includes, on the 3′ side thereof, a sequence (B′) that can hybridize to a sequence (B) on the 3′ side of either a strand extended from the first primer or a complementary strand of the target nucleic acid sequence 4. The first primer 1F and the second primer 1R include, on the 5′ sides thereof, sequences (C) that are substantially identical to each other.
摘要:
Problem to be solved There is provided a method for detecting and/or amplifying a nucleic acid contained in a biological sample such as blood or cells conveniently, rapidly, and effectively.Solution There is provided a method for detecting a nucleic acid contained in a sample, comprising the step of adding at least one substance selected from the group consisting of polyphenols, polyhydric alcohols, sugar acids, sugar alcohols, and hydrophilic biodegradable polymers to a sample, the step of complementarily binding an oligonucleotide complementary to a part of the nucleic acid sequence of a nucleic acid to be detected to a part of the nucleic acid sequence, and the step of detecting the nucleic acid to be detected.
摘要:
Problem to be Solved There is provided a method for detecting and/or amplifying a nucleic acid contained in a biological sample such as blood or cells conveniently, rapidly, and effectively.Solution There is provided a method for detecting a nucleic acid contained in a sample, comprising the step of adding at least one substance selected from the group consisting of polyphenols, polyhydric alcohols, sugar acids, sugar alcohols, and hydrophilic biodegradable polymers to a sample, the step of complementarily binding an oligonucleotide complementary to a part of the nucleic acid sequence of a nucleic acid to be detected to a part of the nucleic acid sequence, and the step of detecting the nucleic acid to be detected.
摘要:
Metastatic cancer cells originating from gastric cancer are detected by a method comprising the step of collecting a biological sample from a subject, the step of detecting the presence of at least either aldehyde dehydrogenase or dopa decarboxylase in the biological sample of the subject, and the step of determining that the possibility of containing metastatic cancer cells originating from the gastric cancer in the sample is high when at least either aldehyde dehydrogenase or dopa decarboxylase is present. By the use of these as markers for metastatic cancer cells originating from gastric cancer, the presence or absence of peritoneal metastasis in a gastric cancer patient can be detected rapidly and reliably, and data important for deciding whether intraperitoneal cancer chemotherapy should be applied is provided.
摘要:
The present invention provides methods for the sequencing of all RNA species within an RNA sample, such as the RNA content obtained from a cell, a tissue, a living organism, or from an artificial source. RNA molecules within the samples are labeled in a RNA-specific manner prior to immobilization on a solid support. One label is used to mark the location of the RNA molecule on the solid support, whereas the second label is used to mark selectively the S′ end of full-length mRNA molecules. RNA molecules are sequenced while being bound to the solid support in one or more sequencing reactions, and sequences of individual RNA molecules can be forwarded to computational analysis for assembling sequence information from individual sequencing reads obtained from the same location on the solid support. Not only unsupervised expression profiling on a genome-wide scale, but also the direct analysis of RNA-RNA interactions become possible as revealed by the analysis of the sequencing information obtained along with genomic information.
摘要:
The present invention relates to a process for synthesizing or amplifying efficiently a nucleic acid comprising a target nucleic acid sequence. In the process according to the present invention, a primer comprising in its 3′-end portion a sequence (Ac′) which hybridizes a sequence (A) in the 3′-end portion of the target nucleic acid sequence, and in the 5′-side of said sequence (Ac′) a sequence (B′) which hybridizes the complementary sequence (Bc) of a sequence (B) positioned in the 5′-side of said sequence (A) on the target nucleic acid sequence, wherein {X−(Y−Y′)}/X is in the range of −1.00 to 1.00, in which X denotes the number of bases in said sequence (Ac′), Y denotes the number of bases in the region flanked by said sequences (A) and (B) in the target nucleic acid sequence, and Y′ denotes the number of bases in an intervening sequence between said sequences (Ac′) and (B′) (Y′ may be zero).