• 제목/요약/키워드: Candidate gene association study

검색결과 229건 처리시간 0.025초

한국인 조현병 환자에서CNR1 유전자의 (AAT)n 삼핵산 반복 다형성과 안구추적운동 이상에 대한 연합 연구 (No Association between (AAT)n Repeat Polymorphisms in the Cannabinoid Receptor 1 Gene and Smooth Pursuit Eye Movement Abnormality in Korean Patients with Schizophrenia)

  • 김민재;김채리;박진완;백두현;신형두;최인근;한상우;황재욱;이연정;우성일
    • 생물정신의학
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    • 제23권4호
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    • pp.148-156
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    • 2016
  • Objectives According to previous studies, the cannabinoid receptor 1 (CNR1) gene could be an important candidate gene for schizophrenia. Some studies have linked the (AAT)n trinucleotide repeat polymorphism in CNR1 gene with the risk of schizophrenia. Meanwhile, smooth pursuit eye movement (SPEM) has been regarded as one of the most consistent endophenotypes of schizophrenia. In this study, we investigated the association between the (AAT)n trinucleotide repeats in CNR1 gene and SPEM abnormality in Korean patients with schizophrenia. Methods We measured SPEM function in 167 Korean patients with schizophrenia (84 male, 83 female) and they were divided according to SPEM function into two groups, good and poor SPEM function groups. We also investigated allele frequencies of (AAT)n repeat polymorphisms on CNR1 gene in each group. A logistic regression analysis was performed to find the association between SPEM abnormality and the number of (AAT)n trinucleotide repeats. Results The natural logarithm value of signal/noise ratio (Ln S/N ratio) of the good SPEM function group was $4.34{\pm}0.29$ and that of the poor SPEM function group was $3.21{\pm}0.70$. In total, 7 types of trinucleotide repeats were identified, each containing 7, 10, 11, 12, 13, 14, and 15 repeats, respectively. In the patients with $(AAT)7$ allele, the distributions of the good and poor SPEM function groups were 18 (11.1%) and 19 (11.0%) respectively. In the patients with $(AAT)_{10}$ allele, $(AAT)_{11}$ allele, $(AAT)_{12}$ allele, $(AAT)_{13}$ allele, $(AAT)_{14}$ allele and $(AAT)_{15}$ allele, the distributions of good and poor SPEM function groups were 13 (8.0%) and 12 (7.0%), 4 (2.5%) and 6 (3.5%), 31 (19.8%) and 35 (20.3%), 51 (31.5%) and 51 (29.7%), 36 (22.2%) and 45 (26.2%), 9 (5.6%) and 4 (2.3%) respectively. As the number of (AAT) n repeat increased, there was no aggravation of abnormality of SPEM function. Conclusions There was no significant aggravation of SPEM abnormality along with the increase of number of (AAT)n trinucleotide repeats in the CNR1 gene in Korean patients with schizophrenia.

사람의 Interleukin-29 유전자의 새로운 변이의 단리 및 그들의 연관 (Novel Variations in Human Interleukin-29 and Their Association)

  • Song, Ju-Hee;Chae, Soo-Cheon;Lee, Jae-Hoon;Chung, Hun-Taeg
    • 생명과학회지
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    • 제14권2호
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    • pp.275-279
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    • 2004
  • 사이토카인과 그들 수용체의 유전자 다형성은 면역작용에 의한 질병들의 발병원인에 있어서 유전적인 인자로 여겨지는 후보물질들로서, 자가면역질환 및 염증성 그리고 감염질환에 민감하게 연관되어 있다고 알려져 있다. 최근 새롭게 보고된 Interleukin-29유전자는 유전학적 질병들의 복잡한 특성을 해결할 수 있는 중요한 후보유전자이지만 이 유전자에 대한 다형성에 대한 연구는 아직 보고된바 없다. 우리는 이 연구에서 처음으로 프로모터부분을 포함한 Interleukin-29 유전자의 전체 지름 DNA에서 유전자의 다형성을 염기서열 분석 방법을 이용하여 탐색하였다. Interleukin-29 유전자의 다형성들이 한국인의 알레르기성 비염의 감염력과 관련되어 있는지를 알아보기 위하여 알레르기성 비염환자 및 알레르기성 비염이 걸리지 않은 정상인의 다형성을 유전자형과 대립유전자의 빈도를 비교분석 하였다. 우리는 이 연구에서 사람의 Interleukin-29 유전자의 한 개의 신규의 다형성 (1184C>A)을 intron 2에서 그리고 한 개의 신규의 변이부위 (-1842_-1841dupGA)를 프로모터에서 찾아냈다. 우리들의 연구 결과는 이들 유전자 다형성 부위 및 변이부위가 알레르기성 비염과 연관은 없는 것으로 밝혀졌다.

Zygote arrest 1 유전자 변이(g.2540T>C)와 두록 정액의 운동학적 특성과의 연관성 분석 (Association with Kinetic Characteristics of sperm in Duroc Boar and the Zygote Arrest 1 gene Polymorphism (g.2540T>C))

  • 이미진;고준호;조규호;최태정;김용민;김영신;진동일;조은석;김남형
    • 한국산학기술학회논문지
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    • 제19권9호
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    • pp.116-123
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    • 2018
  • 정액의 품질은 정자의 운동학적 특성 및 첨체의 온전성 등에 의해서 결정된다. 이전 연구들에서 정액 품질 검사는 현미경을 이용하여 사람이 직접적으로 수행하기 때문에 오차가 컸다. 최근에는 이러한 기법을 보완하고자 분자생물학적 방법을 통한 검사 방법이 새로이 대두되고 있다. ZAR1 유전자는 척추동물의 초기 배아 발달에 영향을 미치는 유전자로 알려져 있지만 정액과 연관성 연구는 진행되어 있지 않다. 본 연구는 ZAR1 유전자의 SNP을 탐색하고 정액의 운동학적 특성과의 연관성을 규명하였다. SNP을 탐색 및 연관성 분석을 하고자 두록 수퇘지 105두의 혈액으로부터 추출한 DNA로 부터 ZAR1 유전자의 전체 염기서열 분석을 실시하였고, 105두의 정액의 운동학적 특성을 분석하였다. 그 결과, ZAR1의 염색체 2540번째 T 서열이 C로 변환되는 것을 확인하였고, ZAR1 SNP의 유전자형을 분석한 결과 major allel은 T 서열이며 minor allele은 C로 확인되었다. ZAR1의 유전자형과 정액의 운동학적 특성과의 연관성 분석 결과 MOT (Motility) (p<0.01)와 VSL (Straight-line Velocity) (p<0.05)에서 유의적인 차이가 나타났다. 또한, 운동학적 특성과 ZAR1 SNP을 비교하였을 때, T allele을 가진 유전자형이 C allele에 비해 MOT와 VSL을 감소시키는 것으로 확인하였다. 따라서 C allele을 가진 돼지가 정액의 MOT와 VSL에서 더 좋은 것으로 판단된다. 이러한 결과들은 우수한 정액을 생산하는 돼지를 판별하는 유전자 진단 기법의 기초자료로 활용할 수 있을 것으로 사료된다.

Genetic Polymorphisms of ARMC4, LRP4 and BCL2 Genes are Associated with Blood Pressure Traits and Hypertension in Korean Population

  • Park, Hye-Jeong;Jeon, Tae-Eun;Kim, Yong-Seob;Jin, Hyun-Soek;Park, Sangjung
    • 대한의생명과학회지
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    • 제26권1호
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    • pp.28-36
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    • 2020
  • High blood pressure (HTN) is a condition in which blood pressure is kept higher than normal. Blood pressure trait measures systolic blood pressure (SBP) which is the highest pressure and diastolic blood pressure (DBP) which is the lowest blood pressure. Pulse pressure (PP) is the difference between systolic and diastolic blood pressure. Hypertension is known as a disease caused by the interaction of the environment and genetic factors. To date, studies have been conducted to find genes associated with hypertension. Genome-Wide Association Study (GWAS) analysis using European data from the UK Biobank reported new 535 loci were associated with blood pressure trait. Among them, 12 genes have been reported to have a significant correlation with SBP, DBP and PP. In the study, 12 genes polymorphisms were extracted based on KARE (Korean association resource) and then we performed linear regression of blood pressure trait. As a result, 6 SNPs of the 3 genes (rs12355413 and rs11006736 of ARMC4, rs2290883, rs2290884 and rs11039014 of LRP4, rs7234941 of BCL2) showed statistically significant correlation (P<0.05) with blood pressure trait. Of the 3 genes, 6 SNPs in 2 genes (rs9651357, rs12355413, rs11006736, rs1889522 of ARMC4 and rs4987774, rs7234941 of BCL2) showed significant correlation with hypertension. These results suggest that genetic polymorphisms of ARMC4, LRP4 and BCL2 genes are associated with blood pressure traits and hypertension in Korean population. Moreover, we expected to help understand the pathogenesis of hypertension.

Association of Endocrine Factors (Insulin-Like Growth Factor-II and Binding Protein-3) with Litter Size in Pigs

  • Yun, J.S.;Kang, W.J.;Seo, D.S.;Park, S.S.;Hong, K.C.;Lee, C.Y.;Ko, Y.
    • Asian-Australasian Journal of Animal Sciences
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    • 제14권3호
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    • pp.307-315
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    • 2001
  • Litter size has been one of the important economic traits in porcine reproduction. The insulin-like growth factor (IGF) system has been shown to mediate actions of the steroid hormone or to synergize with other endocrine factors so that it consequently plays roles in reproductive processes, including ovulation, implantation, maintenance of pregnancy, and fetal development. However, the effect of the serum IGF system on porcine litter size has not been deeply studied. Therefore, this study was conducted to relate serum IFG-II concentration and IGF binding protein-3 (IGFBP-3) expression with porcine litter size. Moreover, the possible association of those with estrogen receptor (ER) as a candidate gene for litter size was investigated. Swine were separated into two groups showing high and low litter sizes, and sera were collected from sows in the estrous cycle to postnatal growth of their female progeny. Serum IFG-II concentration was measured by radioimmunoassay and IGFBP-3 expression was detected by Western ligand blotting. During the estrous cycle, IGFBP-3 expression in both groups decreased moderately from metestrus to estrus, but IFG-II concentration showed a reverse pattern. Also, IFG-II concentration and IGFBP-3 expression decreased gradually as pregnancy proceeded. Unlike IGFBP-3, IFG-II decreased moderately as newborn pigs grew. Significant differences in serum IFG-II amount between the two groups were detected at 60 (p<0.01), 75, 90, and 105 d (p<0.05) of pregnancy and at 60 (p<0.01), 45, and 105 d (p<0.05) of postnatal growth. Furthermore, based on ER genotypes, a high litter size group with genotypes AB and BB showed lower IFG-II concentration than a low litter size group with a genotype AA during pregnancy. Taken together, the results indicate that the serum IFG-II and IGFBP-3 are correlated with the litter size in pigs.

Decreases in $Casz1$ mRNA by an siRNA Complex Do not Alter Blood Pressure in Mice

  • Ji, Su-Min;Shin, Young-Bin;Park, So-Yon;Lee, Hyeon-Ju;Oh, Berm-Seok
    • Genomics & Informatics
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    • 제10권1호
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    • pp.40-43
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    • 2012
  • Recent genomewide association studies of large samples have identified genes that are associated with blood pressure. The Global Blood Pressure Genetics (Global BPgen) and Cohorts for Heart and Aging Research in Genome Epidemiology (CHARGE) consortiums identified 14 loci that govern blood pressure on a genomewide significance level, one of which is $CASZ1$ confirmed in both Europeans and Asians. $CASZ1$ is a zinc finger transcription factor that controls apoptosis and cell fate and suppresses neuroblastoma tumor growth by reprogramming gene expression, like a tumor suppressor. To validate the function of $CASZ1$ in blood pressure, we decreased $Casz1$ mRNA levels in mice by siRNA. $Casz1$ siRNA reduced mRNA levels by 59% in a mouse cell line. A polyethylenimine-mixed siRNA complex was injected into mouse tail veins, reducing $Casz1$ mRNA expression to 45% in the kidney. However, blood pressure in the treated mice was unaffected, despite a 55% reduction in $Casz1$ mRNA levels in the kidney on multiple siRNA injections daily. Even though $Casz1$ siRNA-treated mice did not experience any significant change in blood pressure, our study demonstrates the value of $in$ $vivo$ siRNA injection in analyzing the function of candidate genes identified by genomewide association studies.

Identification of CNVs and their association with the meat traits of Hanwoo

  • Chan Mi Bang;Khaliunaa Tseveen;Gwang Hyeon Lee;Gil Jong Seo;Hong Sik Kong
    • 한국동물생명공학회지
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    • 제38권3호
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    • pp.158-166
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    • 2023
  • Background: Copy number variation (CNV) can be identified using next-generation sequencing and microarray technologies, the research on the analysis of its association with meat traits in livestock breeding has significantly increased in recent years. Hanwoo is an inherent species raised in the Republic of Korea. It is now considered one of the most economically important species and a major food source mainly used for meat (Hanwoo beef). Methods: In this study, CNVs and the relationship between the obtained CNV regions (CNVRs) can be identified in the Hanwoo steer samples (n = 473) using Illumina Hanwoo SNP 50K bead chip and bioinformatic tools, which were used to locate the required data and meat traits were investigated. The PennCNV software was used for the identification of CNVs, followed by the use of the CNV Ruler software for locating the different CNVRs. Furthermore, bioinformatics analysis was performed. Results: We found a total of 2,575 autosomal CNVs (933 losses, 1,642 gains) and 416 CNVRs (289 gains, 111 losses, and 16 mixed), which were established with ranged in size from 2,183 bp to 983,333 bp and 10,004 bp to 381,836 bp, respectively. Upon analyzing the restriction of minor alleles frequency > 0.05 for meat traits association, 6 CNVRs in the carcass weight, 2 CNVRs in the marbling score, 3 CNVRs in the backfat thickness, and 2 CNVRs in the longissimus muscle area were related to the meat traits. In addition, we identified an overlap of 347 CNVRs. Moreover, 3 CNVRs were determined to have a gene that affects meat quality. Conclusions: Our results confirmed the relationship between Hanwoo CNVR and meat traits, and the possibility of overlapping candidate genes, annotations, and quantitative trait loci that results depended on to contribute to the greater understanding of CNVs in Hanwoo and its role in genetic variation among cattle livestock.

Association Analysis of Monocyte Chemotactic Protein-3 (MCP3) Polymorphisms with Asthmatic Phenotypes

  • Park, Byung-Lae;Kim, Lyoung-Hyo;Choi, Yoo-Hyun;Cheong, Hyun-Sub;Park, Hae-Sim;Hong, Soo-Jong;Choi, Byoung-Whui;Lee, June-Hyuk;Uh, Soo-Taek;Park, Choon-Sik;Shin, Hyoung-Doo
    • BMB Reports
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    • 제38권1호
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    • pp.77-81
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    • 2005
  • The monocyte chemotactic protein-3 (MCP3), on chromosome 17q11.2-q12, is a secreted chemokine, which attracts macrophages during inflammation and metastasis. In an effort to discover additional polymorphism(s) in genes whose variant(s) have been implicated in asthma, we scrutinized the genetic polymorphisms in MCP3 to evaluate it as a potential candidate gene for asthma host genetic study. By direct DNA sequencing in twenty-four individuals, we identified four sequence variants within the 3 kb full genome including 1,000bp promoter region of MCP3; one in promoter region (-420T>C), three in intron (+136C>G, +563C>T, +984G>A) respectively. The frequencies of those four SNPs were 0.020 (-420T>C), 0.038 (+136C>G), 0.080 (+563C>T), 0.035 (+984G>A), respectively, in Korean population (n = 598). Haplotypes, their frequencies and linkage disequilibrium coefficients (|D'|) between SNP pairs were estimated. The associations with the risk of asthma, skin-test reactivity and total serum IgE levels were analyzed. Using statistical analyses for association of MCP3 polymorphisms with asthma development and asthma-related phenotypes, no significant signals were detected. In conclusion, we identified four genetic polymorphisms in the important MCP3 gene, but no significant associations of MCP3 variants with asthma phenotypes were detected. MCP3 variation/haplotype information identified in this study will provide valuable information for future association studies of other allergic diseases.

소 FASN 유전자 변이의 연관불균형과 한우 도체형질에 미치는 영향 (Characterization of the Bovine FASN Gene Variation for Carcass and Beef Quality Traits in Hanwoo)

  • 이송란;김상욱;이중재;이준헌;윤두학;김종주;정영철;전순홍;최재원;김내수;김관석
    • Journal of Animal Science and Technology
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    • 제51권3호
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    • pp.185-192
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    • 2009
  • 소 염색체 19번에 존재하는 유지방 함량 및 지방산 조성에 영향을 미치는 양적경제 형질 유전자 좌위에서 발견된 지방산 합성 효소인 FASN 유전자는 포화지방산과 불포화지방산의 함량을 조절하는 강력한 후보유전자이다. 본 연구에서 FASN 유전자의 g.17924 A>G 변이를 한우집단과 미국산 육우 집단에서 분석하였고 그 결과는 한우에서는 GG형의 개체빈도가(71%)로 매우 높았으며, 미국산육우에서는 GG형 빈도는 불과(35%)밖에 되지 않았다. 한우 품종에서 FASN 유전자의 염기서열 분석을 하여 27 개의 단일염기 변이를 발견 하였고, 그 중 9개는 본 연구에서 처음으로 밝혀지는 단일염기 변이이다. 한우 집단 100두와 수입우 집단 96에 대하여 유전자형 분석을 수행한 결과, FASN 유전자 내의 4개의 단일염기 변이의 연관 불평형 및 반수체 구역을 연구하였다. g.10568 C>T와 g.11280 G>A 단일염기 변이의 다형성은 한우집단에서 고기의 육색(P=0.004)과 고기의 조직감(P=0.0114)에 고도의 유의성이 통계적인 분석에 의하여 나타났다. 그리고 g.13125 C>T와 g.17924 G>A 다형성은 등지방두께 및 육량지수에 유의성을 관찰할 수 있었다(P=0.0179, 0.0495). 이상의 결과는 소 FASN 유전자 내의 변이들이 한우집단의 불포화 지방산 함량과 도체 형질에 연관성은 차별화된 고급한우육을 생산하기 위한 중요한 DNA 마커로써 활용가치가 있을 것으로 사료된다.

돼지 mitochondrial calcium uptake 1 (MICU1) 유전자의 3'UTR 내 SNP가 육질에 미치는 영향 (Effects of Polymorphisms in the 3' Untranslated Region of the Porcine Mitochondrial calcium uptake 1 (MICU1) Gene on Meat Quality Traits)

  • 지예솔;조은석;전현정;이시우;임규상;김태헌;이경태
    • 생명과학회지
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    • 제26권11호
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    • pp.1232-1236
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    • 2016
  • Mitochondrial calcium uptake 1 (MICU1)은 2개의 canonical EF hands를 가지고 미토콘드리아 내막에 위치하여, 미토콘드리아의 칼슘 섭취에 중요한 기능을 하는 것으로 알려져 있다. 근육 세포의 미토콘드리아 칼슘 섭취는 사후에 급속냉각 또는 냉장 시, 근육 내 칼슘 방출로 인한 강직과 관련되어 있으므로 궁극적으로는 육질 형성에 관련이 있을 것으로 판단된다. 따라서 본 연구에서는 돼지 MICU1 유전자의 exon영역의 변이를 탐색하고, 발굴된 변이에 대해 육질 형질과의 연관성 분석을 실시하였다. 이를 위해 버크셔 667두(암퇘지 347두, 거세수퇘지 320두)가 이용되었으며, MICU1 유전자의 cDNA를 염기서열 해독하여 비교함으로써 exon 영역의 변이를 발굴하였다. 그 결과 MICU1의 3' 비해독 영역(untranslated region, UTR)에서 3개의 단일염기다형성(single-nucleotide polymorphism, SNP)를 발견했다. 그리고 이들 SNP에 대해 공시돈의 육질형질(근육 pH, 육즙 손실, 육색, 근내지방함량)과 연관성 분석을 실시했다. SNP1 (c.*136G>A)에서는 육즙 손실(p=0.017), 근내지방함량(p=0.039)과 연관되어 있었고, SNP2 (c.*222G>A)와 SNP3 (c.*485G>A)에서는 각각 육즙 손실(p=0.018)과 근내지방함량(p<0.001)과 연관되어 있는 것을 확인하였다. 따라서 본 결과를 바탕으로, 돼지에서 육질과 관련된 후보 유전자로 추정된 MICU1 유전자로부터 3' 비해독 영역의 변이가 유의적으로 육질 형질과 관련되어있다는 것이 확인되었다. 향후 MICU1 유전자의 3' 비해독 영역의 변이들에 기능적 역할을 정확히 파악하기 위한 분자생물학적 특성 연구가 필요할 것으로 판단된다.