WO2021029462A1 - Composition for prediction or diagnosis of hypertension or obesity - Google Patents

Composition for prediction or diagnosis of hypertension or obesity Download PDF

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WO2021029462A1
WO2021029462A1 PCT/KR2019/010338 KR2019010338W WO2021029462A1 WO 2021029462 A1 WO2021029462 A1 WO 2021029462A1 KR 2019010338 W KR2019010338 W KR 2019010338W WO 2021029462 A1 WO2021029462 A1 WO 2021029462A1
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methylation
seq
sequence
obesity
npr2
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PCT/KR2019/010338
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French (fr)
Korean (ko)
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김명선
박재호
홍문주
양혜정
김민정
김순희
허행전
차민호
임남희
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한국식품연구원
한국한의학연구원
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Priority to PCT/KR2019/010338 priority Critical patent/WO2021029462A1/en
Priority to KR1020207002000A priority patent/KR102342523B1/en
Publication of WO2021029462A1 publication Critical patent/WO2021029462A1/en

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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12QMEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/68Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
    • C12Q1/6876Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
    • C12Q1/6883Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12QMEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q2600/00Oligonucleotides characterized by their use
    • C12Q2600/154Methylation markers
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12QMEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q2600/00Oligonucleotides characterized by their use
    • C12Q2600/158Expression markers

Definitions

  • the present invention relates to a composition for predicting or diagnosing hypertension or obesity.
  • Hypertension refers to the case where the systolic blood pressure is 140mmHg or more or the diastolic blood pressure is 90mmHg or more.
  • the symptoms are headache, dizziness, palpitations, dyspnea, sleep problems, hemiplegia, arteriosclerosis, etc.
  • the cause of primary hypertension (essential hypertension), which accounts for the majority of 90% of hypertension, is not yet clear, but race, age, family history, obesity, lack of exercise, smoking, Many factors, including diet, cause disease, and secondary hypertension accounts for 10%, and it is reported that it is caused by specific causes such as endocrine system disease, aortic stenosis, kidney disease, and drugs.
  • Obesity occurs when energy intake exceeds energy consumption over a long period of time and excess energy is stored in fat.
  • appetite is regulated by factors derived from the periphery, of which leptin and insulin are representative.
  • leptin and insulin are representative.
  • This normal feedback system that regulates energy balance is a kind of protective mechanism that prevents weight gain, but in obesity, because the feedback system does not work properly, obesity worsens and causes comorbidities.
  • the fifth base is present, which is 5-methylcytosine (5-mC) with a methyl group attached to the fifth carbon of the cytosine ring.
  • 5-mC always comes only to the C of the CG dinucleotide (5'-mCG-3'), and this CG is often referred to as CpG.
  • Most of C in CpG is methylated with a methyl group attached. This methylation of CpG inhibits the expression of repetitive sequences in the genome, such as Alu and transposon, and is the most common site of extragenic changes in mammalian cells.
  • CpG islands Some of the CpGs appear exceptionally densely, and they are called CpG islands. CpG islands are 0.2 ⁇ 3kb in length, the distribution percentage of C and G bases exceeds 50%, and the distribution percentage of CpG is higher than 3.75%. About 45,000 CpG islands appear in the whole human genome, and they appear especially concentrated in the promoter region that controls the expression of genes. On the other hand, in the somatic cell of a normal person, the CpG islands of these important gene expression control sites are not methylated, but the imprinted genes and inactivated genes on the X chromosome are methylated so that they are not expressed during development. .
  • genetic abnormalities Many diseases are caused by genetic abnormalities, and the most common form of genetic abnormalities is a change in the coding sequence of a gene, and such genetic changes are called mutations.
  • mutations When there is a mutation in a gene, the protein that the gene encodes changes structure and function, resulting in disorders and defects, and these mutant proteins cause disease.
  • an abnormality in the expression of that gene can cause disease.
  • a typical example is methylation, in which a methyl group is attached to the cytosine base site of the CpG island, the regulatory site of gene transcription, in which case the gene is blocked from expression. This is called epigenetic change, and it is transmitted to progeny cells like a mutation, and causes the same effect, that is, loss of expression of the corresponding protein.
  • An object of the present invention is to provide a composition capable of predicting and diagnosing hypertension or obesity with high accuracy.
  • An object of the present invention is to provide a method of predicting and diagnosing hypertension or obesity with high accuracy and providing information necessary for diagnosis.
  • a composition for predicting or diagnosing hypertension or obesity comprising an agent for measuring the methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene consisting of the sequence of SEQ ID NO: 1.
  • a primer set capable of amplifying a fragment containing the NPR2 gene promoter region consisting of the methylated nucleotide sequence of SEQ ID NO: 1, and hybridizing with the NPR2 gene promoter region consisting of the methylated nucleotide sequence of SEQ ID NO: 1
  • Probe methylation specific binding protein capable of binding to the NPR2 gene promoter region consisting of methylated nucleotide sequence of SEQ ID NO: 1, methylation specific binding antibody or aptamer
  • sequencing primer sequencing bi-synthesis primer and sequencing bi-ligation
  • composition of the above 1, wherein the formulation comprises a primer set consisting of the sequence of SEQ ID NO: 2 and 3.
  • composition of 1 above, wherein the methylation site is the cytosine of 257, 264, 266 or 270 in the sequence of SEQ ID NO: 1.
  • the predicted disease is obesity
  • the methylation site is a cytosine at position 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 or 281 in the sequence of SEQ ID NO: 1 , Composition.
  • a kit for predicting or diagnosing hypertension or obesity comprising the composition of any one of the above 1 to 5.
  • Information for predicting or diagnosing hypertension or obesity comprising comparing methylation of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene consisting of the sequence of SEQ ID NO: 1 from the isolated biological sample with the methylation of a normal control sample Delivery method.
  • NPR2 Neurouretic Peptide Receptor2
  • the predicted disease is obesity
  • the methylation site is a cytosine at position 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 or 281 in the sequence of SEQ ID NO: 1 , Way.
  • the present invention can predict obesity or hypertension at an early stage, or predict the onset degree with high accuracy.
  • FIG. 1 is a graph showing a change in the methylation level of the promoter region of the NPR2 gene in the obese group and the hypertensive group.
  • (a) is a comparison between a traditional Korean food group and a westernized Korean food group
  • (b) is a comparison between a normal group and an obese group
  • (c) is a comparison between a normal group and a hypertensive group.
  • the present invention relates to a composition for predicting or diagnosing hypertension or obesity.
  • composition for predicting or diagnosing hypertension or obesity of the present invention includes an agent for measuring the methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene.
  • the promoter of the NPR2 gene is a sequence including a CpG island, and may be formed of the nucleotide sequence of SEQ ID NO: 1, but is not limited thereto.
  • the nucleotide sequence of SEQ ID NO: 1 is a sequence including a CpG island, and is a base at positions 35,791,398-35,791,820 of chromosome 9 in the UCSC Genome Browser Human GRCh37/hg19 DNA sequence.
  • the level of methylation can be measured on genomic DNA obtained from a biological sample isolated from an individual.
  • the individual may be a subject suspected of obesity or high blood pressure, a subject for which obesity or high blood pressure risk is to be predicted. This may be a mammal, including a human, and specifically may be a human.
  • the sample may be, for example, one or more selected from the group consisting of cells, tissues, biopsies, paraffin tissue, blood, serum, plasma, urine, and combinations thereof, and more preferably blood, but is not limited thereto.
  • the agent for measuring the methylation level is, for example, a primer set capable of amplifying a fragment containing the NPR2 gene promoter region consisting of the methylated nucleotide sequence of SEQ ID NO: 1, the NPR2 gene promoter region consisting of the methylated nucleotide sequence of SEQ ID NO: 1 Probe capable of hybridizing with, methylation specific binding protein capable of binding to the NPR2 gene promoter region consisting of the methylated nucleotide sequence of SEQ ID NO: 1, methylation specific binding antibody or aptamer, sequencing primer, sequencing bi-synthesis primer and sequencing It may be a bi-ligation primer or the like.
  • a primer set containing the sequences of SEQ ID NOs: 2 and 3 can be used, and more specifically, a primer set consisting of the sequences of SEQ ID NOs: 2 and 3 can be used.
  • the methylation site may be, for example, a cytosine at position 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 or 281 in the sequence of SEQ ID NO: 1, but is not limited thereto.
  • it may be a cytosine at position 257, 264, 266 or 270 in the sequence of SEQ ID NO: 1, and also, 213, 218, 228, 257, 264, 270 or 281 in the sequence of SEQ ID NO: 1 It may be a cytosine at position 1, or a cytosine at position 257, 264, or 270, but is not limited thereto.
  • the composition of the present invention By measuring the methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene with the composition of the present invention, when the methylation level is measured higher than that of the normal group, it can be determined that it corresponds to hypertension or obesity, or has a high possibility of onset.
  • the present invention relates to a kit for predicting or diagnosing hypertension or obesity comprising the composition.
  • the kit of the present invention includes a composition containing a substance capable of detecting whether the NPR2 gene promoter region consisting of the nucleotide sequence of SEQ ID NO: 1 is methylated, and targets a sample isolated from a biological sample, the NPR2 gene promoter region By detecting the methylation of hypertension or obesity can be predicted or diagnosed.
  • the sample may be within the above-described range, and a genomic DNA sample isolated therefrom may be used. It is preferable that the genomic DNA sample is CpG-containing.
  • the CpG-containing nucleic acid is DNA, but is not limited thereto, and may include a sample containing DNA or RNA including DNA and mRNA.
  • the DNA or RNA may be single-stranded or double-stranded, or may contain a DNA-RNA hybrid.
  • the kit of the present invention comprises a compartmentalized carrier means containing a sample, a second container containing a primer capable of amplifying the 5'-CpG-3' sequence site of the sample, and a truncated or cleaved nucleic acid for amplifying a methylated CpG-containing nucleic acid It may comprise one or more containers comprising a third container containing means for detecting the presence of non-reactive nucleic acids.
  • the primer is PCR for detecting whether methylation has occurred on the genome, methylation specific PCR, real time methylation specific PCR, and methylated DNA specific binding protein.
  • the carrier means are suitable for containing one or more containers, such as bottles, tubes, and each container contains independent components used in the method of the invention. In the specification of the present invention, a person of ordinary skill in the art can easily dispense the necessary agent in a container.
  • the present invention relates to a method of providing information for predicting or diagnosing hypertension or obesity.
  • the present invention includes comparing the methylation of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene from the isolated biological sample with that of a normal control sample.
  • the biological sample and the subject subject may be within the aforementioned range.
  • methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene is higher than the methylation level of the normal control sample, information indicating that it corresponds to hypertension or obesity or is likely to develop may be provided.
  • the methylation site may be, for example, a cytosine at position 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 or 281 in the sequence of SEQ ID NO: 1, but is not limited thereto.
  • it may be a cytosan at position 257, 264, 266, or 270 in the sequence of SEQ ID NO: 1, and also, 213, 218, 228, 257, 264, 270 or 281 in the sequence of SEQ ID NO: 1 It may be a cytosine at position 1, or a cytosine at position 257, 264, or 270, but is not limited thereto.
  • the method of the present invention may further include detecting methylation of the promoter region of the NPR2 gene from the biological sample.
  • this may be performed by separating genomic DNA from a biological sample, treating methylated DNA and unmethylated DNA in genomic DNA with a reagent that changes differently, and detecting methylation, but is not limited thereto.
  • the reagent for differently modifying the methylated DNA and the unmethylated DNA may be, for example, bisulfite, disulfite, hydrogen sulfite, but is not limited thereto.
  • the unmethylated cytosine (C) base on bisulfite-treated DNA is deaminated to change to a uracil (U) base, while the methylated cytosine base remains as cytosine. That is, they are labeled with different bases so that they can be distinguished from each other according to the presence or absence of methylation of cytosine bases on DNA by bisulfite treatment.
  • the detection of methylation is, for example, bisulfite sequencing, sequencing by synthesis, sequencing by ligation, methylation specific PCR, and real time methylation specific PCR. ), PCR using a methylated DNA specific binding protein, PCR using a methylated DNA specific binding antibody or an aptamer, or a nucleic acid chip, but is not limited thereto.
  • the bisulfite sequencing method is a method of detecting a nucleic acid containing methylated CpG, the step of contacting a sample containing the nucleic acid with an agent that modifies an unmethylated cytosine, and the CpG-of the sample using a methylation-independent oligonucleotide primer. And amplifying the containing nucleic acid.
  • the oligonucleotide primer may be characterized by amplifying the nucleic acid without distinguishing between the modified methylated and unmethylated nucleic acids.
  • the amplified product may be sequenced by the Sanger method using a sequencing primer or analyzed by a next generation sequencing (NGS) method to detect methylated nucleic acids.
  • NGS next generation sequencing
  • Next-generation sequencing methods may be characterized by sequencing by synthesis and sequencing by ligation.
  • the feature of this method is that instead of creating a bacterial clone, a single DNA fragment is spatially separated, amplified in situ (clonal amplification), and sequenced. At this time, since hundreds of thousands of fragments are read at the same time, it is also referred to as a massive parallel sequencing method.
  • it is a sequencing bi-synthesis method, and it uses a method of obtaining a signal by sequentially attaching mono or dinucleotides, including pyro-sequencing, ion torrent, and Solexa methods.
  • NGS equipment based on Sequencing by Synthesis includes Roche's 454 platform, Illumina's HiSeq platform, Life Technology's Ion PGM platform, and Pacific BioSciences' PacBio platform. have.
  • the 454 and Ion PGM use emulsion PCR as a clonal amplification method, and HiSeq uses bridge amplification.
  • the sequencing bi-synthesis method reads the sequence by detecting phosphate, hydrogen ions, or previously attached fluorescence generated when DNA is synthesized by attaching one nucleotide in sequence.
  • 454 uses a pyroseqeuncing method using phosphoric acid
  • Ion PGM uses hydrogen ion detection.
  • HiSeq and PacBio decode the sequence by detecting fluorescence.
  • Sequencing by ligation is a sequencing technology that uses DNA ligase to identify a nucleotide at a specific position in a DNA sequence. Unlike most sequencing techniques that use polymerases, they do not use polymerases, and DNA ligases do not ligate mismatched sequences. This is the SOLiD system. In this technique, two bases are read at intervals, and since each base is independently repeated five times through a primer reset, the accuracy is increased by reading each base twice.
  • dinucleotide primers corresponding to the nucleotide sequence are sequentially ligated, and the combination of these ligations is finally analyzed to determine the nucleotide sequence of the DNA. Completed.
  • the present invention relates to a method of selecting a diet for improving obesity or hypertension.
  • the method of the present invention comprises the steps of comparing the methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene consisting of the sequence of SEQ ID NO: 1 in a sample isolated from an individual before and after feeding a subject diet; And if the methylation level is decreased after feeding the diet, selecting the diet as a diet for improving obesity or hypertension.
  • NPR2 Neurouretic Peptide Receptor2
  • Subjects and samples may be within the above-described range.
  • the measurement of the methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene can be performed using the above-described agent or by the above-described method.
  • the methylation site may be, for example, a cytosine at position 257, 264, or 270 in the sequence of SEQ ID NO: 1. Further, it may be a cytosine at position 213, 218, 228, 257, 264, 270, or 281 in the sequence of SEQ ID NO: 1, but is not limited thereto.
  • the target diet is a diet for the target individual, the type is not limited, and may be, for example, a traditional Korean diet.
  • the diet may be fed once or several times, for example, one week or more, or two or more weeks, but is not limited thereto.
  • the diet may be selected as a diet for improving obesity or hypertension.
  • the following test subjects were recruited, and genomic DNA was extracted from their blood samples and used for methylation analysis.
  • a total of 104 people in the normal group, 44 people in the hypertensive group, and 80 people in the obese group were selected.
  • a total of 5 people in the traditional Korean group and 5 people in the westernized Korean group were selected.
  • the selection criteria for the hypertensive group and the obese group are shown in Tables 1 and 2 below, and detailed information is shown in Tables 3 and 4 below.
  • the selection criteria are shown in Table 5, and detailed information is shown in Table 6.
  • a total of 20 genomic DNA samples were selected before and after diet for 2 weeks for each of the 4 subjects in the normal group and the hypertensive group, and the group that consumed traditional Korean food and the group that consumed westernized Korean food for 2 weeks.
  • bisulfite sequencing was performed.
  • the analysis of WGBS in the normal group and hypertensive group was performed by requesting Macrogen (Korea), and through the analysis of WGBS, regions with differences in methylation ratio in the normal group, hypertension group, and obese group were selected, and 104 samples of the normal group, Bisulfite sequencing was performed for the location of 44 samples in the hypertensive group and 80 samples in the obese group.
  • the WGBS of the group who ate traditional Korean food and the group who ate Westernized Korean food was commissioned by Macrogen (Korea) and analyzed the results by the Korea Food Research Institute. Through this, regions with significant differences in the methylation rate were selected in the group who ate Westernized Korean food and the group who ate traditional Korean food after a two-week diet. For the location, bisulfite sequencing was performed on a total of 20 samples, 5 samples each before and after traditional Korean food, and 5 samples each for westernized Korean food. Bisulfite sequencing was performed by requesting LAS Co., Ltd. (Korea), and Illumina MiSeq. Platform was used. The reference sequence used for the analysis was Human GRCh37/hg19 from UCSC GenomeBrowser (http://genome.ucsc.edu/cgi-bin/hgGateway).
  • NPR2 gene promoter region (hg19:chr9:35,791,398-35,791,819) Assay between normal and obese groups through methylation analysis
  • 1B is a BSAS analysis result of the NPR2 gene promoter region of the normal group (black) and the obese group (red), and 11 cytosine positions confirmed to show a significant difference in methylation level between the normal group and the obese group Is the same as the area marked with an asterisk.
  • the value was obtained using the methylation ratio (mean ⁇ SD), the p value was obtained using a general linear model that adjusted sex, age, smoking, and drinking, and the significance was confirmed at the p ⁇ 0.05 level.
  • 10 cytosine positions excluding those at 35,791,650 were significantly correlated with the number of fast food intakes. It was confirmed that there is (Table 8).
  • NPR2 gene promoter region (hg19:chr9:35,791,398-35,791,819) Assay between group and hypertension group through methylation analysis
  • FIG. 1 is the BSAS analysis results of the NPR2 gene promoter region of the normal group (black) and the hypertensive group (red), four confirmed that the methylation level shows a significant difference between the normal group and the hypertension group
  • the cytosine location is the same as the site marked with an asterisk.
  • the value was calculated using a general linear model that adjusted the methylation ratio (mean ⁇ SD), and the p value was adjusted for sex, age, smoking, drinking, and BMI. Significance was confirmed at the p ⁇ 0.05 level.
  • NPR2 gene promoter region (hg19:chr9:35,791,398-35,791,819) Assay between traditional Korean food intake group and Westernized Korean food intake group through methylation analysis
  • the composition characteristics of the Korean diet (K-diet) and the Westernized Korean food (control diet) consumed by the test subjects are shown in Table 10, and the diet was prepared based on the definition and characteristics of traditional Korean food specified in the following published paper. Constructed and provided. (SH Kim et al. Korean diet: Characteristics and historical background. J Ethn Foods. 2016;3:26-31)
  • Figure 1 (a) is a BSAS analysis result of the NPR2 gene promoter region of the traditional Korean group (black) and the westernized Korean group (red), showing a significant difference in the methylation level between the traditional Korean and westernized Korean groups.
  • the identified locations are the same as those marked with an asterisk.
  • the numerical value confirmed the significance between the traditional Korean food group and the westernized Korean food group at the methylation ratio (mean ⁇ SD), p ⁇ 0.05.
  • the 11 cytosine positions in the NPR2 gene promoter site, where methylation levels are increased by obesity, include 7 cytosine positions (35,791,610 / 35,791,615 / 35,791,625 / 35,791,654 / 35,791,661 / 35,791,667 / 35,791,678) restored by the Korean diet pattern (p ⁇ 0.05, Table 12)

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Abstract

The present invention relates to a composition that comprises a preparation that measures the methylation level of the promoter region of the natriuretic peptide receptor 2 (NPR2) gene, and thus can predict or diagnose hypertension or obesity even when a symptom thereof is not identified visually or from other results, or even at a very early stage.

Description

고혈압 또는 비만의 예측 또는 진단용 조성물Composition for predicting or diagnosing hypertension or obesity
본 발명은 고혈압 또는 비만의 예측 또는 진단용 조성물에 관한 것이다.The present invention relates to a composition for predicting or diagnosing hypertension or obesity.
고혈압은 수축기 혈압이 140mmHg 이상이거나 확장기 혈압이 90mmHg 이상인 경우를 말하며, 증상은 두통, 현기증, 심박항진, 호흡곤란, 수면장애, 반신마비, 동맥경화 등으로 심각할 경우 사망에까지 이를 수 있다. 국민 고혈압 사업단(National Hypertension Center)에서 제시한 자료에 따르면 고혈압의 90%의 대부분을 차지하는 일차성 고혈압(본태성 고혈압)의 원인은 아직 확실치 않지만, 종족, 나이, 가족력, 비만, 운동부족, 흡연, 식생활 등 여러 가지 많은 요인들이 모여 질병을 발생시키며, 이차성 고혈압은 10%를 차지하는데 내분비계 질환, 대동맥 협착증, 신장 질환, 약물 등의 특정한 원인에 의해 발병된다고 보고하였다.Hypertension refers to the case where the systolic blood pressure is 140mmHg or more or the diastolic blood pressure is 90mmHg or more.The symptoms are headache, dizziness, palpitations, dyspnea, sleep problems, hemiplegia, arteriosclerosis, etc. According to the data presented by the National Hypertension Center, the cause of primary hypertension (essential hypertension), which accounts for the majority of 90% of hypertension, is not yet clear, but race, age, family history, obesity, lack of exercise, smoking, Many factors, including diet, cause disease, and secondary hypertension accounts for 10%, and it is reported that it is caused by specific causes such as endocrine system disease, aortic stenosis, kidney disease, and drugs.
비만은 장기간에 걸쳐 에너지 섭취량이 에너지 소비량을 초과하여 잉여 에너지는 지방에 저장될 때 발생한다. 정상 상태에서 식욕은 말초에서 유래한 인자들에 의하여 조절을 받는데, 그 중 대표적인 것이 렙틴과 인슐린이다. 체중이 증가하면 혈중의 렙틴과 인슐린 농도가 증가하며, 섭식중추인 시상하부에 작용하여 식욕을 억제하고, 에너지 소모를 촉진함으로써 증가한 체중을 원상 복귀하도록 한다. 에너지 균형을 조절하는 이러한 정상적인 피드백 시스템은 체중 증가를 예방하는 일종의 보호 기전이나, 비만증에서는 피드백 시스템이 적절하게 작용하지 않기 때문에 비만증이 악화되고 동반 질환을 야기하게 된다.Obesity occurs when energy intake exceeds energy consumption over a long period of time and excess energy is stored in fat. Under normal conditions, appetite is regulated by factors derived from the periphery, of which leptin and insulin are representative. When the weight is increased, the concentration of leptin and insulin in the blood increases, and it acts on the hypothalamus, the feeding center, to suppress appetite and promote energy consumption to restore the increased weight. This normal feedback system that regulates energy balance is a kind of protective mechanism that prevents weight gain, but in obesity, because the feedback system does not work properly, obesity worsens and causes comorbidities.
최근에는 DNA 메틸화 측정을 통하여 암과 같은 질병을 진단하는 방법들이 제시되고 있다. 특정 유전자의 CpG 섬이 과메틸화되어 있을 때, 그 유전자의 발현은 차단(gene silencing)되게 된다. 이는 생체 내에서 유전자의 단백질 지정 코딩서열(coding sequence)에 돌연변이(mutation)가 없이도 그 유전자의 기능이 소실되는 주요 기전이며, 특히 암에서 다수의 종양억제 유전자(tumor suppressor genes)의 기능이 소실되는 원인으로 해석되고 있다. 따라서 특정 유전자의 CpG 섬의 메틸화를 검색하는 것은 질병 연구에 큰 도움이 되며, 이를 메틸화 특이 PCR이나 자동염기분석 등의 방법으로 검사하여 질병의 진단과 스크리닝 등에 이용하려는 시도가 최근 활발하게 이루어지고 있다.Recently, methods for diagnosing diseases such as cancer through DNA methylation measurement have been proposed. When the CpG island of a specific gene is hypermethylated, the expression of that gene is blocked (gene silencing). This is the main mechanism in which the function of the gene is lost even without mutation in the protein-specific coding sequence of the gene in vivo. In particular, the function of a number of tumor suppressor genes is lost in cancer. It is interpreted as a cause. Therefore, searching for methylation of CpG islands of a specific gene is of great help in disease research, and attempts to use it for diagnosis and screening of diseases by examining this by methods such as methylation-specific PCR or automatic base analysis have been actively made in recent years. .
포유류 세포의 게놈 DNA에는 A, C, G, T 외에 5번째 염기가 존재하며, 이는 시토신 환의 5번째 탄소에 메틸기가 붙은 5-메틸시토신(5-mC)이다. 5-mC는 항상 CG 다이뉴클레오타이드의 C에만 오며(5'-mCG-3'), 이러한 CG를 흔히 CpG라고 표시한다. CpG의 C는 대부분이 메틸기가 붙어서 메틸화되어 있다. 이러한 CpG의 메틸화는 알루(Alu)나 전이인자(transposon)와 같이 게놈 내에 반복되는 염기서열(repetitive sequence)이 발현되지 못하도록 억제하며, 포유류 세포에서 유전자외 변화가 가장 흔히 나타나는 부위이다. 이러한 CpG의 5-mC는 자연히 탈아미노화(deamination)되어 T로 바뀌며, 이에 따라 포유류 게놈내 CpG는 정상적으로 나타나야 할 빈도(1/4 x 1/4=6.25%)보다 훨씬 낮은 1%의 빈도만을 나타낸다.In the genomic DNA of mammalian cells, in addition to A, C, G, and T, the fifth base is present, which is 5-methylcytosine (5-mC) with a methyl group attached to the fifth carbon of the cytosine ring. 5-mC always comes only to the C of the CG dinucleotide (5'-mCG-3'), and this CG is often referred to as CpG. Most of C in CpG is methylated with a methyl group attached. This methylation of CpG inhibits the expression of repetitive sequences in the genome, such as Alu and transposon, and is the most common site of extragenic changes in mammalian cells. The 5-mC of CpG is naturally deaminated and converted to T, and accordingly, CpG in the mammalian genome only has a frequency of 1%, which is much lower than the normal frequency (1/4 x 1/4 = 6.25%). Show.
CpG 중에 예외적으로 밀집되어 나타나는 것들이 있으며, 이를 CpG 섬이라고 한다. CpG 섬은 길이가 0.2~3kb이고, C 및 G 염기의 분포백분율이 50%를 넘으며, CpG의 분포백분율이 3.75% 이상으로 높게 집중되어 나타나는 부위를 가리킨다. CpG 섬은 전체 인체 유전체에 약 45,000개가 나타나며, 특히 유전자의 발현을 조절하는 프로모터 부위에 집중되어 나타난다. 한편, 정상인의 체세포(somatic cell)에서는 이들 중요 유전자 발현조절 부위의 CpG 섬이 메틸화되어 있지 않으나, 발생 중에 발현되지 않도록 각인된(imprinted) 유전자와 비활성화(inactivation)된 X 염색체상의 유전자들은 메틸화되어 있다.Some of the CpGs appear exceptionally densely, and they are called CpG islands. CpG islands are 0.2~3kb in length, the distribution percentage of C and G bases exceeds 50%, and the distribution percentage of CpG is higher than 3.75%. About 45,000 CpG islands appear in the whole human genome, and they appear especially concentrated in the promoter region that controls the expression of genes. On the other hand, in the somatic cell of a normal person, the CpG islands of these important gene expression control sites are not methylated, but the imprinted genes and inactivated genes on the X chromosome are methylated so that they are not expressed during development. .
상당수의 질환은 유전자의 이상에 의해 발생하고, 유전자 이상 중 가장 많은 형태는 유전자의 코딩서열에 변화가 오는 것으로 이러한 유전자 자체의 변화(genetic change)를 돌연변이라고 한다. 어떤 유전자에 돌연변이가 있을 때, 그 유전자가 코딩하는 단백질은 구조와 기능이 바뀌고 장애와 결손을 가져오게 되며, 이러한 돌연변이 단백질은 질병을 유발한다. 그러나 특정 유전자에 돌연변이가 없이도 그 유전자의 발현에 이상이 있으면 질병이 유발될 수 있다. 대표적인 예가 유전자 전사의 조절부위 CpG 섬의 시토신 염기부위에 메틸기가 붙는 메틸화로, 이 경우 그 유전자는 발현이 차단된다. 이와 같은 것을 후성유전적 변화(epigenetic change)라고 하며, 이것도 돌연변이와 마찬가지로 자손세포에 전달되며, 동일한 효과, 즉 해당 단백질의 발현 상실을 야기한다.Many diseases are caused by genetic abnormalities, and the most common form of genetic abnormalities is a change in the coding sequence of a gene, and such genetic changes are called mutations. When there is a mutation in a gene, the protein that the gene encodes changes structure and function, resulting in disorders and defects, and these mutant proteins cause disease. However, even without mutations in a specific gene, an abnormality in the expression of that gene can cause disease. A typical example is methylation, in which a methyl group is attached to the cytosine base site of the CpG island, the regulatory site of gene transcription, in which case the gene is blocked from expression. This is called epigenetic change, and it is transmitted to progeny cells like a mutation, and causes the same effect, that is, loss of expression of the corresponding protein.
유전자의 메틸화 수준을 분석하여 특정 암에 대한 진단 또는 예측에 관한 기술은 일부 존재하였으나, 특정 유전자의 메틸화 수준 분석을 통해 비만, 고혈압을 정확히 예측 또는 진단하는 연구는 보고된 바가 없었다.There have been some techniques for diagnosing or predicting specific cancers by analyzing the methylation level of a gene, but there have been no reports of studies that accurately predict or diagnose obesity and hypertension through the analysis of methylation levels of specific genes.
본 발명은 높은 정확도로 고혈압 또는 비만을 예측, 진단할 수 있는 조성물을 제공하는 것을 목적으로 한다.An object of the present invention is to provide a composition capable of predicting and diagnosing hypertension or obesity with high accuracy.
본 발명은 높은 정확도로 고혈압 또는 비만을 예측, 진단하여, 진단에 필요한 정보를 제공하는 방법을 제공하는 것을 목적으로 한다.An object of the present invention is to provide a method of predicting and diagnosing hypertension or obesity with high accuracy and providing information necessary for diagnosis.
1. 서열번호 1의 서열로 이루어진 NPR2 (Natriuretic Peptide Receptor2) 유전자의 프로모터 부위의 메틸화 수준을 측정하는 제제를 포함하는, 고혈압 또는 비만의 예측 또는 진단용 조성물.1. A composition for predicting or diagnosing hypertension or obesity, comprising an agent for measuring the methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene consisting of the sequence of SEQ ID NO: 1.
2. 위 1에 있어서, 메틸화된 서열번호 1의 염기서열로 이루어진 NPR2 유전자 프로모터 부위를 포함하는 단편을 증폭할 수 있는 프라이머 세트, 메틸화된 서열번호 1의 염기서열로 이루어진 NPR2 유전자 프로모터 부위와 혼성화할 수 있는 프로브, 메틸화된 서열번호 1의 염기서열로 이루어진 NPR2 유전자 프로모터 부위와 결합할 수 있는 메틸화 특이적 결합 단백질, 메틸화 특이적 결합 항체 또는 압타머, 시퀀싱 프라이머, 시퀀싱 바이 신세시스 프라이머 및 시퀀싱 바이 라이게이션 프라이머로 이루어진 군으로부터 선택되는 하나 이상인 조성물.2. In the above 1, a primer set capable of amplifying a fragment containing the NPR2 gene promoter region consisting of the methylated nucleotide sequence of SEQ ID NO: 1, and hybridizing with the NPR2 gene promoter region consisting of the methylated nucleotide sequence of SEQ ID NO: 1 Probe, methylation specific binding protein capable of binding to the NPR2 gene promoter region consisting of methylated nucleotide sequence of SEQ ID NO: 1, methylation specific binding antibody or aptamer, sequencing primer, sequencing bi-synthesis primer and sequencing bi-ligation At least one composition selected from the group consisting of primers.
3. 위 1에 있어서, 상기 제제는 서열번호 2 및 3의 서열로 이루어진 프라이머 세트를 포함하는 것인 조성물.3. The composition of the above 1, wherein the formulation comprises a primer set consisting of the sequence of SEQ ID NO: 2 and 3.
4. 위 1에 있어서, 상기 메틸화 부위는 서열번호 1의 서열에서 257, 264, 266 또는 270번의 시토신인, 조성물.4. The composition of 1 above, wherein the methylation site is the cytosine of 257, 264, 266 or 270 in the sequence of SEQ ID NO: 1.
5. 위 1에 있어서, 예측 대상 질환은 비만이고, 상기 메틸화 부위는 서열번호 1의 서열에서 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 또는 281번 위치의 시토신인, 조성물.5. In the above 1, the predicted disease is obesity, and the methylation site is a cytosine at position 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 or 281 in the sequence of SEQ ID NO: 1 , Composition.
6. 위 1 내지 5 중 어느 한 항의 조성물을 포함하는 고혈압 또는 비만의 예측 또는 진단용 키트.6. A kit for predicting or diagnosing hypertension or obesity comprising the composition of any one of the above 1 to 5.
7. 분리된 생물학적 시료로부터 서열번호 1의 서열로 이루어진 NPR2 (Natriuretic Peptide Receptor2) 유전자의 프로모터 부위의 메틸화를 정상 대조군 시료의 메틸화와 비교하는 단계를 포함하는, 고혈압 또는 비만의 예측 또는 진단을 위한 정보 제공 방법.7. Information for predicting or diagnosing hypertension or obesity, comprising comparing methylation of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene consisting of the sequence of SEQ ID NO: 1 from the isolated biological sample with the methylation of a normal control sample Delivery method.
8. 위 7에 있어서, 상기 생물학적 시료로부터 NPR2 유전자의 프로모터 부위의 메틸화를 검출하는 단계를 더 포함하는, 방법.8. The method of 7 above, further comprising the step of detecting methylation of the promoter region of the NPR2 gene from the biological sample.
9. 위 7에 있어서, 상기 메틸화 부위는 서열번호 1의 서열에서 257, 264, 266 또는 270번의 시토신인, 방법.9. The method of 7 above, wherein the methylation site is the cytosine of 257, 264, 266 or 270 in the sequence of SEQ ID NO: 1.
10. 위 7에 있어서, 예측 대상 질환은 비만이고, 상기 메틸화 부위는 서열번호 1의 서열에서 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 또는 281번 위치의 시토신인, 방법.10. In the above 7, the predicted disease is obesity, and the methylation site is a cytosine at position 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 or 281 in the sequence of SEQ ID NO: 1 , Way.
11. 위 7에 있어서, 상기 시료로부터 얻어진 메틸화 수준이 정상 대조군 시료의 메틸화 수준보다 높은 경우 고혈압 또는 비만에 해당하거나, 발병 가능성이 높다는 정보를 제공하는, 방법.11. The method of the above 7, wherein when the methylation level obtained from the sample is higher than the methylation level of the normal control sample, it corresponds to hypertension or obesity, or provides information that the onset is high.
12. 대상 식단의 급여 전 후의 개체로부터 분리된 시료에서 서열번호 1의 서열로 이루어진 NPR2 (Natriuretic Peptide Receptor2) 유전자의 프로모터 부위의 메틸화 수준을 비교하는 단계; 및12. Comparing the methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene consisting of the sequence of SEQ ID NO: 1 in the sample isolated from the individual before and after feeding the subject diet; And
식단 급여 후에 상기 메틸화 수준이 감소된 경우 해당 식단을 비만 또는 고혈압 개선용 식단으로 선별하는 단계;를 포함하는 비만 또는 고혈압 개선용 식단의 선별 방법.When the methylation level is reduced after diet feeding, selecting a diet for improving obesity or hypertension as a diet for improving obesity or hypertension.
13. 위 12에 있어서, 상기 메틸화 부위는 서열번호 1의 서열에서 257, 264 또는 270번 위치의 시토신인, 방법.13. The method of 12 above, wherein the methylation site is a cytosine at position 257, 264 or 270 in the sequence of SEQ ID NO: 1.
14. 위 12에 있어서, 대상 질병은 비만이고, 상기 메틸화 부위는 서열번호 1의 서열에서 213, 218, 228, 257, 264, 270 또는 281번 위치의 시토신인, 방법.14. The method of 12 above, wherein the target disease is obesity, and the methylation site is a cytosine at position 213, 218, 228, 257, 264, 270 or 281 in the sequence of SEQ ID NO: 1.
본 발명은 비만 또는 고혈압을 조기에 예측하거나, 그 발병 정도를 높은 정확도로 예측할 수 있다.The present invention can predict obesity or hypertension at an early stage, or predict the onset degree with high accuracy.
도 1은 비만군, 고혈압군의 NPR2 유전자의 프로모터 부위의 메틸화 수준 변화 그래프이다. (a)는 전통한식군과 서양화된 한식군의 비교, (b)는 정상군과 비만군간의 비교, (c)는 정상군과 고혈압군간의 비교이다.1 is a graph showing a change in the methylation level of the promoter region of the NPR2 gene in the obese group and the hypertensive group. (a) is a comparison between a traditional Korean food group and a westernized Korean food group, (b) is a comparison between a normal group and an obese group, and (c) is a comparison between a normal group and a hypertensive group.
이하 본 발명을 구체적으로 설명한다.Hereinafter, the present invention will be described in detail.
본 발명은 고혈압 또는 비만의 예측 또는 진단용 조성물에 관한 것이다.The present invention relates to a composition for predicting or diagnosing hypertension or obesity.
본 발명의 고혈압 또는 비만의 예측 또는 진단용 조성물은 NPR2 (Natriuretic Peptide Receptor2) 유전자의 프로모터 부위의 메틸화 수준을 측정하는 제제를 포함한다.The composition for predicting or diagnosing hypertension or obesity of the present invention includes an agent for measuring the methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene.
상기 NPR2 유전자의 프로모터는 CpG 섬(island)을 포함하는 서열로서, 서열번호 1의 염기서열로 이루어질 수 있으나, 이에 제한되지 않는다. 상기 서열번호 1의 염기서열은 CpG island를 포함하는 서열로서, UCSC Genome Browser Human GRCh37/hg19 DNA 서열에서 9번 염색체의 35,791,398 - 35,791,820 위치의 염기이다.The promoter of the NPR2 gene is a sequence including a CpG island, and may be formed of the nucleotide sequence of SEQ ID NO: 1, but is not limited thereto. The nucleotide sequence of SEQ ID NO: 1 is a sequence including a CpG island, and is a base at positions 35,791,398-35,791,820 of chromosome 9 in the UCSC Genome Browser Human GRCh37/hg19 DNA sequence.
메틸화 수준은 개체에서 분리된 생물학적 시료에서 얻어진 게놈 DNA를 대상으로 측정될 수 있다.The level of methylation can be measured on genomic DNA obtained from a biological sample isolated from an individual.
개체는 비만 또는 고혈압 의심 대상, 비만 또는 고혈압 위험성을 예측하고자 하는 대상 등일 수 있다. 이는 인간을 포함하는 포유류일 수 있으며, 구체적으로는 인간일 수 있다.The individual may be a subject suspected of obesity or high blood pressure, a subject for which obesity or high blood pressure risk is to be predicted. This may be a mammal, including a human, and specifically may be a human.
시료는 예를 들면 세포, 조직, 생검, 파라핀조직, 혈액, 혈청, 혈장, 소변 및 이들의 조합으로 이루어진 군으로부터 선택되는 하나 이상일 수 있고, 더욱 바람직하게는 혈액일 수 있으나, 이에 제한되지 않는다.The sample may be, for example, one or more selected from the group consisting of cells, tissues, biopsies, paraffin tissue, blood, serum, plasma, urine, and combinations thereof, and more preferably blood, but is not limited thereto.
메틸화 수준을 측정하는 제제는 예를 들면 메틸화된 서열번호 1의 염기서열로 이루어진 NPR2 유전자 프로모터 부위를 포함하는 단편을 증폭할 수 있는 프라이머 세트, 메틸화된 서열번호 1의 염기서열로 이루어진 NPR2 유전자 프로모터 부위와 혼성화할 수 있는 프로브, 메틸화된 서열번호 1의 염기서열로 이루어진 NPR2 유전자 프로모터 부위와 결합할 수 있는 메틸화 특이적 결합 단백질, 메틸화 특이적 결합 항체 또는 압타머, 시퀀싱 프라이머, 시퀀싱 바이 신세시스 프라이머 및 시퀀싱 바이 라이게이션 프라이머 등일 수 있다.The agent for measuring the methylation level is, for example, a primer set capable of amplifying a fragment containing the NPR2 gene promoter region consisting of the methylated nucleotide sequence of SEQ ID NO: 1, the NPR2 gene promoter region consisting of the methylated nucleotide sequence of SEQ ID NO: 1 Probe capable of hybridizing with, methylation specific binding protein capable of binding to the NPR2 gene promoter region consisting of the methylated nucleotide sequence of SEQ ID NO: 1, methylation specific binding antibody or aptamer, sequencing primer, sequencing bi-synthesis primer and sequencing It may be a bi-ligation primer or the like.
구체적으로는 서열번호 2 및 3의 서열을 포함하는 프라이머 세트를 사용할 수 있고, 보다 구체적으로는 서열번호 2 및 3의 서열로 이루어진 프라이머 세트를 사용할 수 있다.Specifically, a primer set containing the sequences of SEQ ID NOs: 2 and 3 can be used, and more specifically, a primer set consisting of the sequences of SEQ ID NOs: 2 and 3 can be used.
메틸화 부위는 예를 들면 서열번호 1의 서열에서 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 또는 281번 위치의 시토신일 수 있으나, 이에 제한되는 것은 아니다.The methylation site may be, for example, a cytosine at position 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 or 281 in the sequence of SEQ ID NO: 1, but is not limited thereto.
본 발명의 일 구현예에 따르면 서열번호 1의 서열에서 257, 264, 266 또는 270번 위치의 시토신일 수 있으며, 또한, 서열번호 1의 서열에서 213, 218, 228, 257, 264, 270 또는 281번 위치의 시토신이거나, 257, 264 또는 270번 위치의 시토신 일 수 있으나, 이에 제한되는 것은 아니다.According to an embodiment of the present invention, it may be a cytosine at position 257, 264, 266 or 270 in the sequence of SEQ ID NO: 1, and also, 213, 218, 228, 257, 264, 270 or 281 in the sequence of SEQ ID NO: 1 It may be a cytosine at position 1, or a cytosine at position 257, 264, or 270, but is not limited thereto.
본 발명의 조성물로 NPR2 (Natriuretic Peptide Receptor2) 유전자의 프로모터 부위의 메틸화 수준을 측정하여, 메틸화 수준이 정상군 대비 높게 측정되는 경우에 고혈압 또는 비만 상태에 해당하거나, 발병 가능성이 높다고 판단할 수 있다.By measuring the methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene with the composition of the present invention, when the methylation level is measured higher than that of the normal group, it can be determined that it corresponds to hypertension or obesity, or has a high possibility of onset.
또한, 본 발명은 상기 조성물을 포함하는 고혈압 또는 비만의 예측 또는 진단용 키트에 관한 것이다.In addition, the present invention relates to a kit for predicting or diagnosing hypertension or obesity comprising the composition.
본 발명의 키트는, 서열번호 1의 염기서열로 이루어진 NPR2 유전자 프로모터 부위의 메틸화 여부를 검출할 수 있는 물질을 포함하는 조성물을 포함하고 있어, 생물학적 시료로부터 분리된 시료를 대상으로, NPR2 유전자 프로모터 부위의 메틸화를 검출하여 고혈압 또는 비만을 예측 또는 진단할 수 있다.The kit of the present invention includes a composition containing a substance capable of detecting whether the NPR2 gene promoter region consisting of the nucleotide sequence of SEQ ID NO: 1 is methylated, and targets a sample isolated from a biological sample, the NPR2 gene promoter region By detecting the methylation of hypertension or obesity can be predicted or diagnosed.
시료는 전술한 범위 내의 것일 수 있고, 여기에서 분리된 게놈 DNA 시료를 사용할 수 있다. 게놈 DNA 시료는 CpG-함유인 것이 바람직하다. 통상적으로, CpG-함유 핵산은 DNA이나, 이에 한정되지 않으며, DNA 또는 DNA와 mRNA를 포함하는 RNA를 함유하는 시료를 포함할 수 있다. 여기서 DNA 또는 RNA는 단일가닥 또는 이중가닥일 수 있으며, 또는 DNA-RNA 하이브리드를 함유할 수 있다.The sample may be within the above-described range, and a genomic DNA sample isolated therefrom may be used. It is preferable that the genomic DNA sample is CpG-containing. Typically, the CpG-containing nucleic acid is DNA, but is not limited thereto, and may include a sample containing DNA or RNA including DNA and mRNA. Here, the DNA or RNA may be single-stranded or double-stranded, or may contain a DNA-RNA hybrid.
본 발명의 키트는 샘플을 담는 구획된 캐리어 수단, 샘플의 5'-CpG-3' 염기서열 부위를 증폭할 수 있는 프라이머를 함유하는 두 번째 용기 및 메틸화 CpG 함유 핵산을 증폭하기 위한 절단된 또는 절단되지 않은 핵산의 존재를 검출하는 수단이 함유된 세번째 용기를 포함하는 하나 이상의 용기를 포함할 수 있다. 하나의 실시예에서, 상기 프라이머는 게놈상에서 메틸화가 일어났는지의 여부를 검출하기 위한 PCR, 메틸화 특이 PCR(methylation specific PCR), 실시간 메틸화 특이 PCR(real time methylation specific PCR), 메틸화 DNA 특이적 결합 단백질을 이용한 PCR, 메틸화 DNA 특이적 결합 항체 또는 압타머를 이용한 PCR, 정량 PCR, 핵산 칩, 시퀀싱, 시퀀싱 바이 신세시스 또는 시퀀싱 바이 라이게이션에 사용하기 위한 프라이머일 수 있다. 캐리어 수단은 병, 튜브와 같은 하나 이상의 용기를 함유하기에 적합하고, 각 용기는 본 발명의 방법에 사용되는 독립적 구성요소들을 함유한다. 본 발명의 명세서에서, 당해 분야의 통상의 지식을 가진 자는 용기 중의 필요한 제제를 손쉽게 분배할 수 있다.The kit of the present invention comprises a compartmentalized carrier means containing a sample, a second container containing a primer capable of amplifying the 5'-CpG-3' sequence site of the sample, and a truncated or cleaved nucleic acid for amplifying a methylated CpG-containing nucleic acid It may comprise one or more containers comprising a third container containing means for detecting the presence of non-reactive nucleic acids. In one embodiment, the primer is PCR for detecting whether methylation has occurred on the genome, methylation specific PCR, real time methylation specific PCR, and methylated DNA specific binding protein. It may be a primer for use in PCR using PCR, PCR using a methylated DNA specific binding antibody or aptamer, quantitative PCR, nucleic acid chip, sequencing, sequencing bi-synthesis, or sequencing bi-ligation. The carrier means are suitable for containing one or more containers, such as bottles, tubes, and each container contains independent components used in the method of the invention. In the specification of the present invention, a person of ordinary skill in the art can easily dispense the necessary agent in a container.
또한, 본 발명은 고혈압 또는 비만의 예측 또는 진단을 위한 정보 제공 방법에 관한 것이다.In addition, the present invention relates to a method of providing information for predicting or diagnosing hypertension or obesity.
본 발명은 분리된 생물학적 시료로부터 NPR2 (Natriuretic Peptide Receptor2) 유전자의 프로모터 부위의 메틸화를 정상 대조군 시료의 메틸화와 비교하는 단계를 포함한다.The present invention includes comparing the methylation of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene from the isolated biological sample with that of a normal control sample.
생물학적 시료 및 대상 개체는 전술한 범위 내의 것일 수 있다.The biological sample and the subject subject may be within the aforementioned range.
NPR2 (Natriuretic Peptide Receptor2) 유전자의 프로모터 부위의 메틸화 수준이 정상 대조군 시료의 메틸화 수준보다 높은 경우에 고혈압 또는 비만 상태에 해당하거나, 발병 가능성이 높다는 정보를 제공할 수 있다.When the methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene is higher than the methylation level of the normal control sample, information indicating that it corresponds to hypertension or obesity or is likely to develop may be provided.
메틸화 부위는 예를 들면 서열번호 1의 서열에서 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 또는 281번 위치의 시토신일 수 있으나, 이에 제한되는 것은 아니다.The methylation site may be, for example, a cytosine at position 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 or 281 in the sequence of SEQ ID NO: 1, but is not limited thereto.
본 발명의 일 구현예에 따르면 서열번호 1의 서열에서 257, 264, 266 또는 270번 위치의 시토산일 수 있으며, 또한, 서열번호 1의 서열에서 213, 218, 228, 257, 264, 270 또는 281번 위치의 시토신이거나, 257, 264 또는 270번 위치의 시토신 일 수 있으나, 이에 제한되는 것은 아니다.According to an embodiment of the present invention, it may be a cytosan at position 257, 264, 266, or 270 in the sequence of SEQ ID NO: 1, and also, 213, 218, 228, 257, 264, 270 or 281 in the sequence of SEQ ID NO: 1 It may be a cytosine at position 1, or a cytosine at position 257, 264, or 270, but is not limited thereto.
본 발명의 방법은 생물학적 시료로부터 NPR2 유전자의 프로모터 부위의 메틸화를 검출하는 단계를 더 포함할 수 있다.The method of the present invention may further include detecting methylation of the promoter region of the NPR2 gene from the biological sample.
이는 보다 구체적으로, 생물학적 시료로부터 게놈 DNA를 분리하고, 게놈 DNA에서 메틸화된 DNA와 비메틸화된 DNA를 상이하게 변형시키는 시약으로 처리하고, 메틸화를 검출하여 수행될 수 있으나, 이에 제한되는 것은 아니다.More specifically, this may be performed by separating genomic DNA from a biological sample, treating methylated DNA and unmethylated DNA in genomic DNA with a reagent that changes differently, and detecting methylation, but is not limited thereto.
상기 메틸화된 DNA와 비메틸화된 DNA를 상이하게 변형시키는 시약은 예를 들면 바이설파이트, 다이설파이트, 하이드로젠 설파이트 등일 수 있으나, 이에 제한되는 것은 아니다.The reagent for differently modifying the methylated DNA and the unmethylated DNA may be, for example, bisulfite, disulfite, hydrogen sulfite, but is not limited thereto.
바이설파이트(bisulfite)가 처리된 DNA 상의 비메틸화된(unmethylated) 시토신(C) 염기는 탈아민화(deamination)되어 우라실(U) 염기로 바뀌는 반면, 메틸화된 시토신 염기는 그대로 시토신으로 남아있게 된다. 즉, 바이설파이트 처리에 의해 DNA 상에서 시토신 염기의 메틸화 유무에 따라 서로 구별할 수 있도록 다른 염기로 표지된다.The unmethylated cytosine (C) base on bisulfite-treated DNA is deaminated to change to a uracil (U) base, while the methylated cytosine base remains as cytosine. That is, they are labeled with different bases so that they can be distinguished from each other according to the presence or absence of methylation of cytosine bases on DNA by bisulfite treatment.
메틸화의 검출은 예를 들면 바이설파이트 시퀀싱, 시퀀싱 바이 신세시스(sequencing by synthesis), 시퀀싱 바이 라이게이션(sequencing by ligation), 메틸화 특이 PCR(methylation specific PCR), 실시간 메틸화 특이 PCR(real time methylation specific PCR), 메틸화 DNA 특이적 결합 단백질을 이용한 PCR, 메틸화 DNA 특이적 결합 항체 또는 압타머를 이용한 PCR 또는 핵산 칩 등에 의해 수행될 수 있으나, 이에 제한되는 것은 아니다.The detection of methylation is, for example, bisulfite sequencing, sequencing by synthesis, sequencing by ligation, methylation specific PCR, and real time methylation specific PCR. ), PCR using a methylated DNA specific binding protein, PCR using a methylated DNA specific binding antibody or an aptamer, or a nucleic acid chip, but is not limited thereto.
바이설파이트 시퀀싱 방법은 메틸화 CpG를 함유한 핵산을 검출하는 방법으로, 핵산을 함유한 시료를 비메틸화 시토신을 변형시키는 제제와 접촉시키는 단계 및 메틸화-비의존적 올리고뉴클레오티드 프라이머를 사용하여 시료의 CpG-함유 핵산을 증폭시키는 단계를 포함한다. 여기서, 상기 올리고뉴클레오티드 프라이머는 변형된 메틸화 및 비메틸화 핵산을 구별하지 않고 핵산을 증폭하는 것을 특징으로 할 수 있다. 상기 증폭된 산물을 시퀀싱 프라이머를 이용하여 Sanger 방법으로 시퀀싱하거나 차세대 시퀀싱(next generation sequencing, NGS) 방법으로 분석하여 메틸화 핵산을 검출할 수 있다.The bisulfite sequencing method is a method of detecting a nucleic acid containing methylated CpG, the step of contacting a sample containing the nucleic acid with an agent that modifies an unmethylated cytosine, and the CpG-of the sample using a methylation-independent oligonucleotide primer. And amplifying the containing nucleic acid. Here, the oligonucleotide primer may be characterized by amplifying the nucleic acid without distinguishing between the modified methylated and unmethylated nucleic acids. The amplified product may be sequenced by the Sanger method using a sequencing primer or analyzed by a next generation sequencing (NGS) method to detect methylated nucleic acids.
차세대 시퀀싱 방법은 시퀀싱 바이 신세시스(Sequencing by synthesis)와 시퀀싱 바이 라이게이션(Sequencing by ligation) 방법으로 하는 것을 특징으로 할 수 있다. 이 방법의 특징은 bacterial clone을 만드는 대신 단일 DNA 단편을 공간적으로 분리하여 in situ로 증폭하고(clonal amplification), 시퀀싱을 해낸다는 것이다. 이때, 수십 만개의 단편을 동시에 읽어내기 때문에 매시브 페러럴 시퀀싱(massive parallel sequencing) 방법으로 불리기도 한다. 기본적으로는 시퀀싱 바이 신세시스 방법이며, 모노 혹은 디뉴클레오티드를 순차적으로 붙여가면서 시그널을 얻는 방법을 사용하는데 파이로시퀀싱, ion torrent, Solexa 방법들이 여기에 해당한다.Next-generation sequencing methods may be characterized by sequencing by synthesis and sequencing by ligation. The feature of this method is that instead of creating a bacterial clone, a single DNA fragment is spatially separated, amplified in situ (clonal amplification), and sequenced. At this time, since hundreds of thousands of fragments are read at the same time, it is also referred to as a massive parallel sequencing method. Basically, it is a sequencing bi-synthesis method, and it uses a method of obtaining a signal by sequentially attaching mono or dinucleotides, including pyro-sequencing, ion torrent, and Solexa methods.
시퀀싱 바이 신세시스에 기반하는 NGS 장비로는 로슈(Roche)사의 454 플랫폼, 일루미나(Illumina)사의 HiSeq 플랫폼, 라이프테크놀로지(Life Technology)사의 Ion PGM 플랫폼, 마지막으로 퍼시픽바이오사이언스(Pacific BioSciences)사의 PacBio 플랫폼이 있다. 454와 Ion PGM은 클로날증폭(clonal amplification) 방법으로 emulsion PCR을 사용하며, HiSeq은 브릿지 증폭(Bridge amplification)을 사용한다. 시퀀싱 바이 신세시스 방법은 한 개의 뉴클레오티드를 순차적으로 붙여가며 DNA를 합성시켜 나갈 때 발생되는 인산(phosphate), 수소이온, 혹은 미리 붙여 놓은 형광을 검출하여 서열을 읽어 나간다. 서열을 검출하는 방법에 있어, 454는 인산을 이용하는 파이로시퀀싱(pyroseqeuncing) 방법을 사용하며, Ion PGM은 수소이온 검출을 이용한다. HiSeq과 PacBio는 형광을 검출하여 서열을 해독한다.NGS equipment based on Sequencing by Synthesis includes Roche's 454 platform, Illumina's HiSeq platform, Life Technology's Ion PGM platform, and Pacific BioSciences' PacBio platform. have. The 454 and Ion PGM use emulsion PCR as a clonal amplification method, and HiSeq uses bridge amplification. The sequencing bi-synthesis method reads the sequence by detecting phosphate, hydrogen ions, or previously attached fluorescence generated when DNA is synthesized by attaching one nucleotide in sequence. In the method of detecting the sequence, 454 uses a pyroseqeuncing method using phosphoric acid, and Ion PGM uses hydrogen ion detection. HiSeq and PacBio decode the sequence by detecting fluorescence.
시퀀싱 바이 라이게이션은 DNA ligase를 이용하는 시퀀싱 기술로 DNA 염기서열에 존재하는 특정 위치의 뉴클레오티드를 확인하는 기술이다. 대부분의 시퀀싱 기술이 중합효소를 사용하는 것과 달리 중합효소를 사용하지 않으며 DNA ligase가 미스매치 서열을 라이게이션(ligation)하지 않는 특징을 이용한다. SOLiD 시스템이 여기에 해당한다. 이 기법에서는 간격을 두면서 두 개씩 염기를 읽는데, 프라이머 리셋(primer reset)을 통해 독립적으로 다섯 번을 반복하기 때문에, 최종적으로는 각 염기를 두 번씩 중복하여 읽어서 정확도를 높인다.Sequencing by ligation is a sequencing technology that uses DNA ligase to identify a nucleotide at a specific position in a DNA sequence. Unlike most sequencing techniques that use polymerases, they do not use polymerases, and DNA ligases do not ligate mismatched sequences. This is the SOLiD system. In this technique, two bases are read at intervals, and since each base is independently repeated five times through a primer reset, the accuracy is increased by reading each base twice.
시퀀싱 바이 라이게이션의 경우, 16개 조합으로 만들어진 디뉴클레오티드 프라이머 세트 중, 해당 염기서열에 대응되는 디뉴클레오티드 프라이머가 순차적으로 라이게이션되며, 이 라이게이션들의 조합을 최종적으로 분석하여 해당 DNA의 염기서열이 완성된다.In the case of sequencing-by-ligation, among a set of dinucleotide primers made of 16 combinations, dinucleotide primers corresponding to the nucleotide sequence are sequentially ligated, and the combination of these ligations is finally analyzed to determine the nucleotide sequence of the DNA. Completed.
또한, 본 발명은 비만 또는 고혈압 개선용 식단의 선별 방법에 관한 것이다.In addition, the present invention relates to a method of selecting a diet for improving obesity or hypertension.
본 발명의 방법은 대상 식단의 급여 전 후의 개체로부터 분리된 시료에서 서열번호 1의 서열로 이루어진 NPR2 (Natriuretic Peptide Receptor2) 유전자의 프로모터 부위의 메틸화 수준을 비교하는 단계; 및 식단 급여 후에 상기 메틸화 수준이 감소된 경우 해당 식단을 비만 또는 고혈압 개선용 식단으로 선별하는 단계;를 포함한다.The method of the present invention comprises the steps of comparing the methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene consisting of the sequence of SEQ ID NO: 1 in a sample isolated from an individual before and after feeding a subject diet; And if the methylation level is decreased after feeding the diet, selecting the diet as a diet for improving obesity or hypertension.
개체 및 시료는 전술한 범위 내의 것일 수 있다.Subjects and samples may be within the above-described range.
NPR2 (Natriuretic Peptide Receptor2) 유전자의 프로모터 부위의 메틸화 수준의 측정은 전술한 제제를 사용하거나 전술한 방법에 의해 수행할 수 있다.The measurement of the methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene can be performed using the above-described agent or by the above-described method.
상기 메틸화 부위는 예를 들면 서열번호 1의 서열에서 257, 264 또는 270번 위치의 시토신일 수 있다. 또한, 서열번호 1의 서열에서 213, 218, 228, 257, 264, 270 또는 281번 위치의 시토신일 수 있으나, 이에 제한되는 것은 아니다.The methylation site may be, for example, a cytosine at position 257, 264, or 270 in the sequence of SEQ ID NO: 1. Further, it may be a cytosine at position 213, 218, 228, 257, 264, 270, or 281 in the sequence of SEQ ID NO: 1, but is not limited thereto.
대상 식단은 대상 개체용 식단이라면 그 종류는 제한되지 않으며, 예를 들면 전통 한식 식단일 수 있다.If the target diet is a diet for the target individual, the type is not limited, and may be, for example, a traditional Korean diet.
식단은 1회 또는 수회 급여된 것일 수 있고, 예를 들면 1주 이상 또는 2주 이상 급여된 것일 수 있으나, 이에 제한되는 것은 아니다.The diet may be fed once or several times, for example, one week or more, or two or more weeks, but is not limited thereto.
식단 급여 후에 상기 메틸화 수준이 감소된 경우 해당 식단을 비만 또는 고혈압 개선용 식단으로 선별할 수 있다.If the methylation level is decreased after feeding the diet, the diet may be selected as a diet for improving obesity or hypertension.
이하, 본 발명을 구체적으로 설명하기 위해 실시예를 들어 상세하게 설명하기로 한다.Hereinafter, examples will be described in detail to illustrate the present invention in detail.
실시예Example
1. 시료 준비1. Sample preparation
하기 실험 대상을 모집하였고, 이들의 혈액 샘플로부터 게놈 DNA를 추출하여 메틸화 분석에 사용하였다. 정상군은 총 104명, 고혈압군은 총 44명, 비만군은 80명이 최종 선발되었다. 전통한식 군은 총 5명, 서양화된 한식군은 총 5명이 최종 선발되었다. 고혈압군, 비만군의 선정 기준은 하기 표 1, 2와 같고, 그 상세 정보는 하기 표 3, 4와 같다. 그리고 식이 조절 군은 선정 기준은 표 5, 그 상세 정보는 표 6과 같다.The following test subjects were recruited, and genomic DNA was extracted from their blood samples and used for methylation analysis. A total of 104 people in the normal group, 44 people in the hypertensive group, and 80 people in the obese group were selected. A total of 5 people in the traditional Korean group and 5 people in the westernized Korean group were selected. The selection criteria for the hypertensive group and the obese group are shown in Tables 1 and 2 below, and detailed information is shown in Tables 3 and 4 below. And for the diet control group, the selection criteria are shown in Table 5, and detailed information is shown in Table 6.
Figure PCTKR2019010338-appb-T000001
Figure PCTKR2019010338-appb-T000001
Figure PCTKR2019010338-appb-T000002
Figure PCTKR2019010338-appb-T000002
Figure PCTKR2019010338-appb-T000003
Figure PCTKR2019010338-appb-T000003
Figure PCTKR2019010338-appb-T000004
Figure PCTKR2019010338-appb-T000004
Figure PCTKR2019010338-appb-T000005
Figure PCTKR2019010338-appb-T000005
Figure PCTKR2019010338-appb-T000006
Figure PCTKR2019010338-appb-T000006
2. 메틸화 분석2. Methylation Analysis
상기 정상군 및 고혈압군 실험 대상 중 각 4개체와 전통한식을 섭취한 군 및 서양화된 한식을 섭취한 군 실험 대상 각 5개체의 2주간 식이 전후 총 20개의 게놈 DNA 시료를 선별하여 WGBS(whole genome bisulfite sequencing)를 수행하였다. 정상군 및 고혈압군의 WGBS의 분석은 마크로젠(한국)에 의뢰하여 수행하였으며, WGBS의 분석을 통해 정상군과 고혈압군, 비만군에서 메틸화 비율에 차이가 있는 지역을 선정하여, 정상군 104개 시료, 고혈압군 44개 시료, 비만군 80개 시료를 대상으로 해당 위치에 대해 바이설파이트 시퀀싱(bisulfite sequencing)을 수행하였다. 전통한식을 섭취한 군 및 서양화된 한식을 섭취한 군의 WGBS는 마크로젠(한국)에 의뢰하여 수행하였으며, 결과 분석은 한국식품연구원에서 진행하였다. 이를 통하여 2주간의 식이 후 서양화된 한식을 섭취한 군과 전통 한식을 섭취한 군에서 메틸화 비율에 유의적으로 차이가 있는 지역을 선정하였다. 해당 위치에 대하여 전통 한식 식이 전후 각각 5개, 서양화된 한식 각각 5개 시료씩 총 20개의 시료를 대상으로 바이설파이트 시퀀싱을 수행하였다. 바이설파이트 시퀀싱은 (주)엘에이에스(한국)에 의뢰하여 수행하였으며, 일루미나 MiSeq. 플랫폼을 사용하였다. 분석에 사용된 참조 서열은 UCSC GenomeBrowser(http://genome.ucsc.edu/cgi-bin/hgGateway)에서 Human GRCh37/hg19을 이용하였다.A total of 20 genomic DNA samples were selected before and after diet for 2 weeks for each of the 4 subjects in the normal group and the hypertensive group, and the group that consumed traditional Korean food and the group that consumed westernized Korean food for 2 weeks. bisulfite sequencing) was performed. The analysis of WGBS in the normal group and hypertensive group was performed by requesting Macrogen (Korea), and through the analysis of WGBS, regions with differences in methylation ratio in the normal group, hypertension group, and obese group were selected, and 104 samples of the normal group, Bisulfite sequencing was performed for the location of 44 samples in the hypertensive group and 80 samples in the obese group. The WGBS of the group who ate traditional Korean food and the group who ate Westernized Korean food was commissioned by Macrogen (Korea) and analyzed the results by the Korea Food Research Institute. Through this, regions with significant differences in the methylation rate were selected in the group who ate Westernized Korean food and the group who ate traditional Korean food after a two-week diet. For the location, bisulfite sequencing was performed on a total of 20 samples, 5 samples each before and after traditional Korean food, and 5 samples each for westernized Korean food. Bisulfite sequencing was performed by requesting LAS Co., Ltd. (Korea), and Illumina MiSeq. Platform was used. The reference sequence used for the analysis was Human GRCh37/hg19 from UCSC GenomeBrowser (http://genome.ucsc.edu/cgi-bin/hgGateway).
3. NPR2 유전자 프로모터 부위 (hg19:chr9:35,791,398-35,791,819) 메틸화 분석을 통한 정상군과 비만군간의 검정3. NPR2 gene promoter region (hg19:chr9:35,791,398-35,791,819) Assay between normal and obese groups through methylation analysis
NPR2 유전자의 프로모터 부위를 대상으로 모집된 실험 대상 전체의 게놈 DNA를 이용하여 (정상군 n=104, 비만군 n=80) 메틸화 여부를 확인하였다. 11개 시토신 위치(35,791,555 / 35,791,610 / 35,791,615 / 35,791,625 / 35,791,650 / 35,791,654 / 35,791,658 / 35,791,661 / 35,791,663 / 35,791,667 / 35,791,678)에서 정상군 대비 비만군에서 DNA 메틸화가 증가되었다(표 7).Using the genomic DNA of the entire experimental subjects recruited for the promoter region of the NPR2 gene (normal group n=104, obese group n=80), methylation was confirmed. DNA methylation was increased in the obese group compared to the normal group at 11 cytosine positions (35,791,555 / 35,791,610 / 35,791,615 / 35,791,625 / 35,791,650 / 35,791,654 / 35,791,658 / 35,791,661 / 35,791,663 / 35,791,667 / 35,791,678).
도 1의 (b)는 정상군(검정색)과 비만군(빨간색)의 NPR2 유전자 프로모터 부위의 BSAS 분석결과이며, 정상군과 비만군 사이에 메틸화 수준이 유의적으로 차이를 보이는 것으로 확인된 11개 시토신 위치는 별표로 표시된 부위와 같다. 1B is a BSAS analysis result of the NPR2 gene promoter region of the normal group (black) and the obese group (red), and 11 cytosine positions confirmed to show a significant difference in methylation level between the normal group and the obese group Is the same as the area marked with an asterisk.
Figure PCTKR2019010338-appb-T000007
Figure PCTKR2019010338-appb-T000007
수치는 methylation ratio (mean± SD), p 값은 sex, age, smoking, drinking을 adjust 한 General linear model을 이용하여 구하였고, p<0.05 수준에서 유의성을 확인하였다. 그 결과, 정상군과 비만군 사이에 의해 메틸화 수준이 유의적으로 증가되는 NPR2 유전자 프로모터 부위의 11개 시토신 위치 중 35,791,650 위치의 시토신을 제외한 10개 시토신 위치가 패스트푸드 섭취횟수와 유의적으로 상관관계가 있는 것으로 확인되었다(표 8).The value was obtained using the methylation ratio (mean± SD), the p value was obtained using a general linear model that adjusted sex, age, smoking, and drinking, and the significance was confirmed at the p<0.05 level. As a result, among the 11 cytosine positions of the NPR2 gene promoter site, where the methylation level is significantly increased by the normal and obese groups, 10 cytosine positions excluding those at 35,791,650 were significantly correlated with the number of fast food intakes. It was confirmed that there is (Table 8).
Figure PCTKR2019010338-appb-T000008
Figure PCTKR2019010338-appb-T000008
4. NPR2 유전자 프로모터 부위 (hg19:chr9:35,791,398-35,791,819) 메틸화 분석을 통한 군과 고혈압군간의 검정4. NPR2 gene promoter region (hg19:chr9:35,791,398-35,791,819) Assay between group and hypertension group through methylation analysis
NPR2 유전자의 프로모터 부위를 대상으로 모집된 실험 대상 전체의 게놈 DNA를 이용하여(정상군 n=104, 고혈압군 n=44) 메틸화 여부를 확인하였다. 4개 시토신 위치(35,791,654, 35,791,661, 35,791,663, 35,791,667)에서 정상군 대비 고혈압군에서 DNA 메틸화가 증가되었다(표 9).The methylation was confirmed using the genomic DNA of the entire experimental subjects recruited for the promoter region of the NPR2 gene (normal group n=104, hypertension group n=44). DNA methylation was increased in the hypertensive group compared to the normal group at the four cytosine positions (35,791,654, 35,791,661, 35,791,663, 35,791,667) (Table 9).
도 1의 (c)는 정상군(검정색)과 고혈압군(빨간색)의 NPR2 유전자 프로모터 부위의 BSAS 분석결과이며, 정상군과 고혈압군 사이에 메틸화 수준이 유의적으로 차이를 보이는 것으로 확인된 4개 시토신 위치는 별표로 표시된 부위와 같다.(C) of Figure 1 is the BSAS analysis results of the NPR2 gene promoter region of the normal group (black) and the hypertensive group (red), four confirmed that the methylation level shows a significant difference between the normal group and the hypertension group The cytosine location is the same as the site marked with an asterisk.
Figure PCTKR2019010338-appb-T000009
Figure PCTKR2019010338-appb-T000009
수치는 methylation ratio (mean± SD), p 값은 sex, age, smoking, drinking, BMI 을 adjust 한 General linear model을 이용하여 구하였고. p<0.05 수준에서 유의성을 확인하였다.The value was calculated using a general linear model that adjusted the methylation ratio (mean± SD), and the p value was adjusted for sex, age, smoking, drinking, and BMI. Significance was confirmed at the p<0.05 level.
5. NPR2 유전자 프로모터 부위 (hg19:chr9:35,791,398-35,791,819) 메틸화 분석을 통한 전통한식 섭취군과 서양화된 한식 섭취군 간의 검정5. NPR2 gene promoter region (hg19:chr9:35,791,398-35,791,819) Assay between traditional Korean food intake group and Westernized Korean food intake group through methylation analysis
실험 대상이 섭취한 전통한식(Korean diet, K-diet)과 서양화된 한식(control diet)의 구성 특징은 표 10과 같으며, 다음 게재된 논문에 명시된 전통한식의 정의 및 특징에 기반하여 식단을 구성하고 제공하였다. (SH Kim et al. Korean diet: Characteristics and historical background. J Ethn Foods. 2016;3:26-31)The composition characteristics of the Korean diet (K-diet) and the Westernized Korean food (control diet) consumed by the test subjects are shown in Table 10, and the diet was prepared based on the definition and characteristics of traditional Korean food specified in the following published paper. Constructed and provided. (SH Kim et al. Korean diet: Characteristics and historical background. J Ethn Foods. 2016;3:26-31)
NPR2 유전자의 프로모터 부위를 대상으로 모집된 실험 대상 전체의 게놈 DNA를 이용하여 (전통 한식군 n=3, 서양화된 한식군 n=4) 메틸화 여부를 확인하였다. 19개 시토신 위치(35,791,421 / 35,791,434 / 35,791,517 / 35,791,566 / 35,791,576 / 35,791,610 / 35,791,615 / 35,791,619 / 35,791,625 / 35,791,640 / 35,791,654 / 35,791,661 / 35,791,667 / 35,791,678 / 35,791,708 / 35,791,712 / 35,791,731 / 35,791,767 / 35,791,775)에서 서양화된 한식을 급여한 군 대비 전통 한식을 급여한 군에서 DNA 메틸화가 감소되었다(표 11).Using the genomic DNA of the entire experimental subjects recruited for the promoter region of the NPR2 gene (traditional Korean group n=3, westernized Korean group n=4), methylation was confirmed. 19 Cytosine Locations (35,791,421 / 35,791,434 / 35,791,517 / 35,791,566 / 35,791,576 / 35,791,610 / 35,791,615 / 35,791,619 / 35,791,625 / 35,791,640 / 35,791,654 / 35,791,661 / 35,791,667 / 35,791 / 35,791,35,791 Korean / 35,791 / 35,791, Korean 35,791) DNA methylation was decreased in the group fed traditional Korean food compared to the group (Table 11).
도 1의 (a)는 전통 한식군(검정색)과 서양화된 한식군(빨간색)의 NPR2 유전자 프로모터 부위의 BSAS 분석결과이며, 전통한식과 서양화된 한식군 사이에 메틸화 수준이 유의적으로 차이를 보이는 것으로 확인된 위치는 별표로 표시된 부위와 같다.Figure 1 (a) is a BSAS analysis result of the NPR2 gene promoter region of the traditional Korean group (black) and the westernized Korean group (red), showing a significant difference in the methylation level between the traditional Korean and westernized Korean groups. The identified locations are the same as those marked with an asterisk.
Figure PCTKR2019010338-appb-T000010
Figure PCTKR2019010338-appb-T000010
Figure PCTKR2019010338-appb-T000011
Figure PCTKR2019010338-appb-T000011
수치는 methylation ratio (mean± SD), p < 0.05 수준에서 전통한식군과 서양화된 한식군 간의 유의성을 확인하였다.The numerical value confirmed the significance between the traditional Korean food group and the westernized Korean food group at the methylation ratio (mean±SD), p <0.05.
6. 공통 위치 검증6. Common location verification
비만에 의해 메틸화 수준이 증가되는 NPR2 유전자 프로모터 부위의 11개 시토신 위치는 한식식사패턴에 의해 회복되는 7개 시토신 위치(35,791,610 / 35,791,615 / 35,791,625 / 35,791,654 / 35,791,661 / 35,791,667 / 35,791,678)를 포함한다(p < 0.05, 표 12)The 11 cytosine positions in the NPR2 gene promoter site, where methylation levels are increased by obesity, include 7 cytosine positions (35,791,610 / 35,791,615 / 35,791,625 / 35,791,654 / 35,791,661 / 35,791,667 / 35,791,678) restored by the Korean diet pattern (p < 0.05, Table 12)
고혈압에 의해 메틸화 수준이 증가되는 NPR2 유전자 프로모터 부위의 4개 시토신 위치는 한식식사패턴에 의해 회복되는 3개 시토신 위치(35,791,654 / 35,791,661 / 35,791,667)를 포함한다(p < 0.05, 표 13).The four cytosine positions in the NPR2 gene promoter region, where methylation levels are increased by hypertension, contain three cytosine positions (35,791,654 / 35,791,661 / 35,791,667) restored by the Korean food pattern (p <0.05, Table 13).
공통적으로 메틸화가 변하는 것으로 확인된 위치는 도 1의 빨간색 네모로 표시된 부위와 같다.Locations in which methylation is commonly found to be changed are the same as those indicated by red squares in FIG.
Figure PCTKR2019010338-appb-T000012
Figure PCTKR2019010338-appb-T000012
수치는 methylation ratio (mean± SD), p < 0.05 수준에서 유의성을 확인하였다.The numerical value confirmed significance at the level of methylation ratio (mean±SD), p <0.05.
Figure PCTKR2019010338-appb-T000013
Figure PCTKR2019010338-appb-T000013
수치는 methylation ratio (mean± SD), p < 0.05 수준에서 유의성을 확인하였다.The numerical value confirmed significance at the level of methylation ratio (mean±SD), p <0.05.

Claims (14)

  1. 서열번호 1의 서열로 이루어진 NPR2 (Natriuretic Peptide Receptor2) 유전자의 프로모터 부위의 메틸화 수준을 측정하는 제제를 포함하는, 고혈압 또는 비만의 예측 또는 진단용 조성물.A composition for predicting or diagnosing hypertension or obesity, comprising an agent for measuring the methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene consisting of the sequence of SEQ ID NO: 1.
  2. 청구항 1에 있어서, 메틸화된 서열번호 1의 염기서열로 이루어진 NPR2 유전자 프로모터 부위를 포함하는 단편을 증폭할 수 있는 프라이머 세트, 메틸화된 서열번호 1의 염기서열로 이루어진 NPR2 유전자 프로모터 부위와 혼성화할 수 있는 프로브, 메틸화된 서열번호 1의 염기서열로 이루어진 NPR2 유전자 프로모터 부위와 결합할 수 있는 메틸화 특이적 결합 단백질, 메틸화 특이적 결합 항체 또는 압타머, 시퀀싱 프라이머, 시퀀싱 바이 신세시스 프라이머 및 시퀀싱 바이 라이게이션 프라이머로 이루어진 군으로부터 선택되는 하나 이상인 조성물.The method according to claim 1, A primer set capable of amplifying a fragment including the NPR2 gene promoter region consisting of the methylated nucleotide sequence of SEQ ID NO: 1, and hybridizing with the NPR2 gene promoter region consisting of the methylated nucleotide sequence of SEQ ID NO: 1 Probe, methylation specific binding protein capable of binding to the NPR2 gene promoter region consisting of the methylated nucleotide sequence of SEQ ID NO: 1, methylation specific binding antibody or aptamer, sequencing primer, sequencing bi-synthesis primer and sequencing bi-ligation primer One or more compositions selected from the group consisting of.
  3. 청구항 1에 있어서, 상기 제제는 서열번호 2 및 3의 서열로 이루어진 프라이머 세트를 포함하는 것인 조성물.The composition of claim 1, wherein the formulation comprises a primer set consisting of the sequences of SEQ ID NOs: 2 and 3.
  4. 청구항 1에 있어서, 상기 메틸화 부위는 서열번호 1의 서열에서 257, 264, 266 또는 270번의 시토신인, 조성물.The composition of claim 1, wherein the methylation site is a cytosine of 257, 264, 266 or 270 in the sequence of SEQ ID NO: 1.
  5. 청구항 1에 있어서, 예측 대상 질환은 비만이고, 상기 메틸화 부위는 서열번호 1의 서열에서 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 또는 281번 위치의 시토신인, 조성물.The composition of claim 1, wherein the predicted disease is obesity, and the methylation site is a cytosine at position 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 or 281 in the sequence of SEQ ID NO: 1 .
  6. 청구항 1 내지 5 중 어느 한 항의 조성물을 포함하는 고혈압 또는 비만의 예측 또는 진단용 키트.A kit for predicting or diagnosing hypertension or obesity comprising the composition of any one of claims 1 to 5.
  7. 분리된 생물학적 시료로부터 서열번호 1의 서열로 이루어진 NPR2 (Natriuretic Peptide Receptor2) 유전자의 프로모터 부위의 메틸화를 정상 대조군 시료의 메틸화와 비교하는 단계를 포함하는, 고혈압 또는 비만의 예측 또는 진단을 위한 정보 제공 방법.Method of providing information for predicting or diagnosing hypertension or obesity, comprising comparing methylation of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene consisting of the sequence of SEQ ID NO: 1 from the isolated biological sample with the methylation of a normal control sample .
  8. 청구항 7에 있어서, 상기 생물학적 시료로부터 NPR2 유전자의 프로모터 부위의 메틸화를 검출하는 단계를 더 포함하는, 방법.The method of claim 7, further comprising detecting methylation of the promoter region of the NPR2 gene from the biological sample.
  9. 청구항 7에 있어서, 상기 메틸화 부위는 서열번호 1의 서열에서 257, 264, 266 또는 270번의 시토신인, 방법.The method of claim 7, wherein the methylation site is a cytosine of 257, 264, 266 or 270 in the sequence of SEQ ID NO: 1.
  10. 청구항 7에 있어서, 예측 대상 질환은 비만이고, 상기 메틸화 부위는 서열번호 1의 서열에서 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 또는 281번 위치의 시토신인, 방법.The method of claim 7, wherein the predicted disease is obesity, and the methylation site is a cytosine at position 158, 213, 218, 228, 253, 257, 261, 264, 266, 270 or 281 in the sequence of SEQ ID NO: 1. .
  11. 청구항 7에 있어서, 상기 시료로부터 얻어진 메틸화 수준이 정상 대조군 시료의 메틸화 수준보다 높은 경우 고혈압 또는 비만에 해당하거나, 발병 가능성이 높다는 정보를 제공하는, 방법.The method according to claim 7, wherein when the methylation level obtained from the sample is higher than the methylation level of the normal control sample, it corresponds to hypertension or obesity, or provides information that there is a high possibility of developing.
  12. 대상 식단의 급여 전 후의 개체로부터 분리된 시료에서 서열번호 1의 서열로 이루어진 NPR2 (Natriuretic Peptide Receptor2) 유전자의 프로모터 부위의 메틸화 수준을 비교하는 단계; 및Comparing the methylation level of the promoter region of the NPR2 (Natriuretic Peptide Receptor2) gene consisting of the sequence of SEQ ID NO: 1 in the sample isolated from the individual before and after feeding the subject diet; And
    식단 급여 후에 상기 메틸화 수준이 감소된 경우 해당 식단을 비만 또는 고혈압 개선용 식단으로 선별하는 단계;를 포함하는 비만 또는 고혈압 개선용 식단의 선별 방법.Selecting a diet for improving obesity or hypertension when the methylation level is reduced after feeding a diet, selecting the diet as a diet for improving obesity or hypertension.
  13. 청구항 12에 있어서, 상기 메틸화 부위는 서열번호 1의 서열에서 257, 264 또는 270번 위치의 시토신인, 방법.The method of claim 12, wherein the methylation site is a cytosine at position 257, 264 or 270 in the sequence of SEQ ID NO: 1.
  14. 청구항 12에 있어서, 대상 질병은 비만이고, 상기 메틸화 부위는 서열번호 1의 서열에서 213, 218, 228, 257, 264, 270 또는 281번 위치의 시토신인, 방법.The method of claim 12, wherein the disease of interest is obesity, and the methylation site is a cytosine at position 213, 218, 228, 257, 264, 270 or 281 in the sequence of SEQ ID NO: 1.
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