ABCG2 基因rs3114018单核苷酸多态性与武陵山地区痛风及高尿酸血症的相关性研究

目的：探讨三磷酸腺苷结合盒转运蛋白 G2 基因(ABCG2) rs3114018位点与武陵山地区原发性痛风和高尿酸血症的相关性。方法：采用Hi-SNP结合多重PCR技术和高通量测序技术,对159例原发性痛风患者、188例高尿酸血症患者和106例健康对照者的ABCG2 rs3114018位点进行基因分型,并分析不同等位基因或基因型与原发性痛风、高尿酸血症易感性的关系。结果：痛风组基因型频率与正常组相比差异具有统计学显著统计学意义（P<0.001),Logistic回归分析显示,基因型CC和C等位基因均是痛风的易感因素(OR=5.861,95%CI:2.239~15.340,P<0.001;OR=2.461,95%CI:1.671~3.622,P<0.001）;高尿酸血症组基因型频率与正常组相比没有显著差异（P>0.05),该位点多态与高尿酸血症没有相关性（P>0.05）;痛风组与高尿酸血症组相比,基因型频率具有统计学差异（P<0.001),基因型CC和C等位基因分别使痛风的发生风险增加了4.131倍和1.994倍。结论：ABCG2 rs3114018位点单核苷酸多态性可能与武陵山地区原发性痛风的发病相关,等位基因C可能是原发性痛风发病的危险因素,携带CC基因型的个体可能更容易患痛风;该位点多态性与高尿酸血症没有显著相关性。     

MiRNA-146a的单核苷酸多态性rs2910164与2型糖尿病相关性的系统分析

目的 对miR-146a rs2910164 与T2DM相关性进行荟萃分析.方法 在Pubmed、EMBASE、以及CNKI、万方数据库进行文献检索,收集病例对照研究,对纳入的文献进行质量评价,并获取相关数据,使用Stata12进行meta分析.结果共检索文献499篇,最终有4篇符合入选标准,其中病例组共2069人,对照组1950人.结果显示rs2910164的基因位点及各遗传模型与T2DM均无明显相关性,但以种族进行分层分析,在各遗传模型中纯合子模型及隐性模型提示与白种人T2DM有关,增加T2DM的发病风险(OR=1.79 95% CI 1.07~3.00, PH=0.216;GG+GC/CC:OR=1.80 95% CI 1.09~2.97, PH=0.314).在敏感性分析中去除Wang等人的研究,此基因位点及纯合子模型与T2DM有关,也提示增加T2DM的发病风险(G/C:OR=1.32 95% CI 1.05~1.67, PH =0.104;GG/CC:OR=1.97 95% CI 1.49~2.61, PH=0.420).结论 miR-146a rs2910164可能增加T2DM的患病风险,但仍需纳入更多高质量、更多不同种族的文献研究,进行综合分析.     

miR-146a基因rs2910164 G/C多态性与miR-146a异常表达与胃癌风险相关性的研究

目的:探讨miR-146a基因单核苷酸多态位点rs2910164 G/C是否影响miR-146a的表达并改变其对胃癌的易感性。方法:选取53例胃癌患者和6株胃癌细胞株(AGS、BGC-823、HGC27、MKN-28、MKN-45和SGC-7901),采用Taqman定量PCR检测miR-146a的表达,构建miR-1...     

Pre-miR-146a基因rs2910164位点单核苷酸基因多态性及miR-146a表达与类风湿关节炎相关性研究

目的 探讨pre-miR-146a基因rs2910164位点单核苷酸基因多态性及miR-146a表达与类风湿关节炎相关性.方法 采用聚合酶链反应-连接酶检测反应检测123例类风湿关节炎(RA)患者和220例健康对照者pre-miR-146a rs2910164位点基因多态性,应用实时荧光定量聚合酶链反应检测68例RA患者、10例骨关节炎(OA)患者及20例健康对照外周血单个核细胞中miR-146a的表达水平,并选取10例RA疾病活动患者行激素加免疫抑制剂正规治疗3个月后miR-146a表达水平的测定.收集并计算RA患者临床参数:发病年龄、性别、类风湿因子(RF)和抗环瓜氨酸肽(抗-CCP)抗体、RA疾病活动(DAS28≥3.2)、骨破坏(X＞Ⅰ期).统计学处理采用X2检验、方差分析、t检验和Pearson相关分析.结果 RA组pre-miR-146a rs2910164位点的基因型频率和等位基因频率与健康对照组比较,差异无统计学意义(P均＞0.05).RA患者pre-miR-146ars2910164位点基因型与发病年龄、性别、RF和抗-CCP抗体阳性率、RA疾病活动、骨破坏阳性率及miR-146a表达量均无相关性(P均＞0.05).RA患者组miR-146a的表达量高于健康对照组和OA组(P均＜0.01),后两组miR-146a的表达量无统计学差异(P＞0.05).RA疾病活动组miR-146a表达高于非活动组和对照组(P均＜0.01),后两组miR-146a的表达量无统计学差异(P＞0.05).RA疾病活动患者治疗后miR-146a表达下降(P＜0.05),DAS28评分降低(P＜0.01).RA患者组miR-146a的表达与红细胞沉降率(ESR,即血沉)、C反应蛋白(CRP)及DAS28评分之间呈正相关(P均＜0.01),与RF、抗-CCP抗体滴度无相关性(P均＞0.05).结论 我国汉族人群中,pre-miR-146a rs2910164位点多态性与RA的易感性、临床参数及miR-146a的表达无相关性,RA患者外周血单个核细胞miR-146a表达上调,其表达水平与RA病情活动有关,miR-146a的检测可能是RA病情活动的一个有用的判断指标.     

中国广西人群miR-146a、miR-149 基因遗传多态性的研究

目的：研究广西人群miR-146a C>G (rs2910164）、miR-149 T>C（rs2292832）等位基因及基因型频率分布,分析其与不同民族种族间的差异性。方法：采用单碱基延伸技术和DNA测序技术对303例广西人群中miR-146a C>G和miR-149 T>C基因单核苷酸多态性(SNP)位点进行分型检测,并与人类基因组计划 (Hapmap) 数据库中公布的非洲人、欧洲人、日本人和中国北京人群的SNP分型数据比较。结果：miR-146a C>G、miR-149 T>C等位基因和基因型频率在广西男女人群之间分布均无差异性（P均>0.05）。广西人群miR-146a C>G和miR-149 T>C基因型及等位基因频率与非洲人、欧洲人、中国北京人比较有统计学意义（P均<0.05）。结论：广西人群miR-146a C>G和miR-149 T>C存在基因多态性,与其他种族人群比较有差异性,这种差异性对人类遗传病的研究可能会起到重要作用。     

MicroRNA 146a基因单核苷酸多态性与卵巢上皮性肿瘤易感性的研究

目的 分析microRNA 146a(miR-146a)基因单核苷酸多态(single nucleotide polymorphisms,SNPs)位点rs2910164(G/C)与卵巢上皮性肿瘤易感性的关系.方法 采用病例-对照研究方法,纳入卵巢上皮性肿瘤患者184例为病例组,无卵巢肿瘤病史的人群200例为对照组.使用基因测序方法确定miR-146a基因rs2910164 (G/C)位点的多态基因型,比较不同基因型在病例组和对照组中的分布情况,并对年龄、月经周期、产次、口服避孕药、家族病史因素进行分层研究.结果 在miR-146a基因多态位点rs2910164(G/C)处,病例组和对照组均有GG、GC和CC 3种基因型,且两组的基因型总体分布差异具有统计学意义(P=0.002).与CC基因型相比,GG和GC基因型携带者的卵巢上皮性肿瘤发病风险较低(OR=0.396,95％ CI=0.219～0.717,P=0.002;OR=0.502,95％ CI =0.308～0.818,P=0.006).分层分析显示,这种影响在年龄≤50岁、产次≤2、未口服避孕药、无家族病史的情况下差异显著,x2检验P值分别为:0.001、0.000、0.001、0.001.结论 miR-146a单核苷酸多态位点rs2910164(G/C)与卵巢上皮性肿瘤易感性相关.GG和GC基因型携带者患卵巢上皮性肿瘤的发病风险低于CC基因型携带者.     

钠依赖性磷酸转运蛋白在痛风/高尿酸血症中的研究进展

钠依赖性磷酸转运蛋白由溶质载体家族17基因编码,编码基因位于6号染色体上,是人体重要的以有机阴离子为底物的转运蛋白,在肾脏等组织中表达。其中钠依赖性磷酸转运蛋白1、3和4有转运尿酸的功能,功能异常会导致尿酸排泄减少,从而引起高尿酸血症,甚至诱发痛风。     

miR-107基因多态性及其表达与缺血性脑卒中的相关性研究

目的:探讨miR-107基因rs2296616位点多态性与缺血性脑卒中(IS)易感性的关联性,检测IS患者和对照者miR-107的表达水平,并分析rs2296616多态性与miR-107的表达是否存在相关性。方法:收集349例IS患者和372例健康对照者,采用多重单碱基延伸SNP分型技术和DNA测序法检rs2296616位点的多态性。利用SYBR Green实时荧光定量PCR的方法检测IS组和对照组中miR-107的表达水平,并分析miR-107基因rs2296616多态性与miR-107表达的相关性。结果:miR-107基因rs2296616位点在IS组和对照组中均存在多态性,rs2296616多态性位点在IS组和对照组中的基因型频率分布均符合HardyWeinberg遗传平衡定律(P均>0.05)。rs2296616位点多态性在IS组和对照组男、女性别间,差异无统计学意义(P均>0.05)。无论是否校正混杂因素的影响,rs2296616多态性位点的基因型、等位基因、显性模型(GG+AG vs AA)、隐性模型(GG vs AA+AG)以及超显性模型(GG+AA vs AG)的频率分布在IS组与对照组间的差异均无统计学意义(P均>0.05)。IS组患者外周血单个核细胞中miR-107的表达水平显著高于对照组(P<0.001),但rs2296616位点不同基因型之间miR-107的表达水平差异无统计学意义(P>0.05)。结论:miR-107基因rs2296616位点多态性与IS易感性不存在关联性。IS患者外周血单个核细胞中异常增高的miR-107可能是IS诊断的潜在新型生物学标志物,但rs2296616位点多态性对miR-107的表达不具有调节性。     

甲状腺乳头状癌患者外周血miR-146a、miR-146b表达水平与预后的关系研究

目的 探讨甲状腺乳头状癌(papillary thyroid cancer,PTC)患者血清miR-146a、miR-146b的表达水平及其与临床病理特征、预后的关系.方法 采用前瞻性研究方法,选取2018年6月至2020年2月本院收治的PTC患者80例为研究对象,50例同期健康人群作为对照组.荧光定量PCR检测外周血...     

FTO rs8050136多态性与黑龙江地区汉族人群2型糖尿病的相关性

目的探讨FTO基因rs8050136单核苷酸多态性与2型糖尿病（T2DM）的相关性。方法采用病例对照研究：病例组为500例,对照组为500例。利用SNa Pshot方法检测基因型。研究FTO基因rs8050136等位基因、基因型和显性模型与T2DM的关系。结果 FTO基因SNP rs8050136等位基因A与C相比,在T2DM组和对照组间的分布频率有统计学意义（P〈0.05,OR：1.28,95%CI：1.12~1.54）;与CC基因型相比,CA基因型和显性模型CA＋AA在两组间的比较有显著差异（P〈0.05,OR：1.25,95%CI：1.03~1.59;P〈0.05,OR：1.29,95%CI：1.13~1.47）。结论 FTO基因SNP rs8050136增加我省人群患T2DM的风险。     

Impact of miR-SNP rs2910164 on miR-146a expression in osteoarthritic chondrocytes

PurposeMiR-146a acts as a negative inflammatory mediator in different diseases and has been implicated in osteoarthritis (OA) pathogenesis. In our study, we investigated the association between miR-SNP rs2910164 and OA susceptibility and its role on the expression of miR-146a, inflammatory and catabolic mediators in osteoarthritic chondrocytes.Materials and methodsGenetic association analysis was performed in 1688 knee OA patients and healthy individuals of Greek origin. Genomic DNA was extracted from blood and genotyped for rs2910164 (G > C) using Restriction-Fragment Length Polymorphism (RFLP). Total RNA was extracted from chondrocytes of 18 OA patients and miR-146a, IL-1 Receptor-Associated Kinase 1 (IRAK-1), TNF Receptor-Associated Factor 6 (TRAF-6), A Disintegrin and Metalloproteinase with Thrombospondin Motifs 5 (ADAMTS-5), Matrix Metalloproteinase-13 (MMP-13), Interleukin-6 (IL-6), Interleukin-1 Beta (IL-1β) and Tumor Necrosis Factor-Alpha (TNF-α) expression was evaluated using quantitative Real-Time PCR (qRT-PCR).ResultsOA patients carrying rs2910164-GC and CC genotypes did not have an increased risk for OA development compared to GG genotype carriers. MiR-146a expression in OA chondrocytes was significantly lower in patients with rs2910164-GC genotype than in the GG carriers. OA patients carrying the rs2910164-GC genotype in their chondrocytes exhibited increased IRAK-1, TRAF-6, MMP-13, IL-1β and IL-6 expression levels compared with rs2910164-GG carriers.ConclusionWe demonstrate, for the first time, that miR-SNP rs2910164 in miR-146a gene is associated with reduced miR-146a and increased inflammatory and catabolic mediators’ expression in OA chondrocytes. Our data imply that genetic variations in miRNAs linked to OA pathogenesis may regulate their expression levels, suggesting new therapeutic strategies for patients with cartilage diseases.     

Association between the three functional miR-146a single-nucleotide polymorphisms,rs2910164, rs57095329, and rs2431697, and autoimmune disease susceptibility: A meta-analysis

Studies suggest associations between the miR-146a single nucleotide polymorphisms (SNPs) and susceptibility to autoimmune diseases. However, the results are inconsistent and inconclusive. Therefore, the aim of this study was to arrive at a conclusion about the association between the three functional miR-146a SNPs and autoimmune disease risk. Studies were identified through PubMed/MEDLINE searches for studies published up to January 2016 using as keywords rs2910164, rs57095329, rs2431697, and miR-146a polymorphisms. Thirty studies were included in the meta-analysis. The SNP rs2910164?G?>?C was found to be associated with increased risk of multiple sclerosis (CC?+?CG versus GG, OR = 1.25, 95% CI: 1.01–1.55), with decreased risks of psoriasis (C versus G, OR = 0.81, 95% CI: 0.69–0.96; CC versus GC?+?GG, OR = 0.73, 95% CI: 0.56–0.94), Behcet’s disease (CC versus GC?+?GG, OR = 0.60, 95% CI: 0.50–0.73), asthma (C versus G, OR = 0.80, 95% CI: 0.69–0.93; CC versus GC?+?GG, OR = 0.65, 95% CI: 0.48–0.86), and uveitis (CC?+?CG versus GG, OR = 0.61, 95% CI: 0.49–0.77). The SNP rs2431697 C?>?T was found to be associated with an increased risk of SLE (T versus C, OR = 1.26, 95% CI: 1.15–1.38; TC?+?TT versus CC, OR = 1.28, 95% CI: 1.03–1.58; TT versus TC?+?CC, OR = 1.40, 95% CI: 1.21–1.62). The SNP rs57095329 A?>?G was found to be associated with an increased risk of SLE (G versus C, OR = 1.25, 95% CI: 1.17–1.35). The miR-146a SNPs rs2910164, rs57095329, rs2431697 are associated with susceptibility to certain autoimmune diseases. However, for other autoimmune diseases, they may be protective or insignificant.     

Association between miRNA-146a rs2910164 (G/C) polymorphism with the susceptibility to chronic HBV infection and spontaneous viral clearance in an Iranian population

Hepatitis B virus (HBV) infection is one of the clinical dilemmas in chronic liver diseases. MicroRNAs (miRNAs) are small noncoding RNA molecules that play an important role in the pathogenesis of liver diseases and single nucleotide polymorphisms (SNPs) in miRNA genes affect the clinical course of HBV infection. Previous studies have shown that miRNA-146a rs2910164 polymorphism can be associated with the pathogenesis of liver diseases such as hepatocellular carcinoma. The present study investigated the association between miRNA-146a rs2910164 polymorphism and susceptibility to HBV infection in an Iranian population. The study comprised 266 patients with chronic HBV infection, 172 patients with spontaneous viral clearance (SVC) after acute HBV infection, and 266 healthy control adjusted for sex and age. The genotyping of the miRNA-146a rs2910164 polymorphism was performed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Our data revealed that GG genotype and G allele of miRNA-146a rs2910164 SNP is dominated (P < 0.001) in patients with chronic HBV infection (Odds ratio [OR] = 3.92; 95% confidence interval [CI] = 2.1-7.32). miRNA-146a rs2910164 polymorphism showed a statistically significant association (P < 0.001) between CC genotype and allele C with SVC (OR = 2.92; 95% CI = 1.56-546). Our findings suggest miRNA-146a SNP (C/G) in our population may be associated with the susceptibility to HBV infection and CC genotype is associated with SVC. Also, the GG genotype and G allele at miRNA-146a rs2910164 is associated with chronic HBV infection in our population.     

Association of two polymorphisms rs2910164 in miRNA-146a and rs3746444 in miRNA-499 with rheumatoid arthritis: A meta-analysis

Background

It has been reported that two single nucleotide polymorphisms (SNPs) rs2910164 in miRNA-146a and rs3746444 in miRNA-499 might be associated with the susceptibility to rheumatoid arthritis (RA). Owing to mixed and inconclusive results, we conducted a meta-analysis to systematically summarize and clarify the association between the two SNPs and RA risk.

Methodology/main results

A systematic search of studies on the association of two SNPs with susceptibility to RA was conducted in PubMed and Embase. Odds ratios (ORs) and 95% confidence intervals (95% CIs) were used to pool the effect size. A total of 6 case-control studies on rs2910164 and 3 studies on rs3746444 were included. Though no evidence of association was found between rs2910164 polymorphism and RA risk in all the genetic models, a trend of reduced risk could be drawn. (C versus G: OR = 0.93, 95% CI 0.82–1.05; GC versus GG: OR = 0.89, 95% CI 0.73–1.10; CC versus GG: OR = 0.84, 95% CI 0.64–1.10; GC/CC versus GG: OR = 0.89, 95% CI 0.73–1.08; CC versus GC/GG: OR = 0.94, 95% CI 0.77–1.14). A significant increased risk of RA was observed in the rs3746444 polymorphism in homozygote comparison, recessive comparison, and allele comparison, but there was insufficient data to fully confirm the association of RA and rs3746444 in miRNA-499.

Conclusions

MiRNA-146a rs2910164 polymorphism is not associated with RA risk, while miRNA-499 rs3746444 polymorphism is correlated with RA risk. However, the results of miRNA-499 rs3746444 should be interpreted with caution due to limited sample and heterogeneity. Large-scale and well-designed studies are needed to validate our findings.     

Predictive role of miR-146a rs2910164 (C>G), miR-149 rs2292832 (T>C), miR-196a2 rs11614913 (T>C) and miR-499 rs3746444 (T>C) in the development of hepatocellular carcinoma

We conducted a case-control study to evaluate the association of miR-146a rs2910164 (C>G), miR-149 rs2292832 (T>C), miR-196a2 rs11614913 (T>C) and miR-499 rs3746444 (T>C) polymorphisms with the risk of hepatocellular carcinoma. A total of 274 patients with HCC were collected between January 2013 and December 2014. The polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was taken to determine the polymorphism of miR-146a C>G, miR-149 T>C, miR-196a2 T>C and miR-499 T>C. By comparing with control groups, patients with HCC were more likely to be males (OR=2.01, 95% CI=1.38-2.95), have older age (OR=1.52, 95% CI=1.09-2.13), have a history of alcohol drinking (OR=2.09, 95% CI=1.49-2.93), and be infected with HBV (OR=32.98, 95% CI=19.70-55.46) and HCV (OR=56.26, 95% CI=23.28-152.98) infection. By conditional regression analysis, individuals carrying the TC and CC genotypes of miR-196a2 T>C were found to be associated with an elevated risk of HCC compared to the TT genotype, and the adjusted odds ratio were 1.50 (1.03-2.17) and 2.86 (1.60-5.16), respectively. Moreover, the TC+CC genotype was correlated with an increased risk of HCC (OR=1.69, 95% CI=1.19-2.41) compared to the wide-type genotype. In conclusion, our results suggested that miR-196a2 T>C polymorphism is associated with HCC risk in Chinese population.     

ABCG2基因rs2231142位点多态性与浙南地区人群原发性痛风的关系

目的探讨三磷酸腺苷结合盒转运蛋白G2基因(ABCG2)rs2231142位点与浙南地区原发性痛风的相关性。方法收集浙南地区原发性痛风样本508例和正常健康体检样本558例,用微滴式数字化PCR技术进行基因分型,分析该位点多态性与痛风的相关性。结果痛风组尿酸、三酰甘油、胆固醇、尿素氮、肌酐以及收缩压水平显著高于正常组(P0.05)。痛风组ABCG2基因rs2231142位点AA型和A等位基因频率显著高于正常组(P0.05)。痛风组AA基因型/AC基因型尿酸、尿素氮和肌酐水平型显著高于痛风组CC基因(P0.05)。结论 ABCG2基因rs2231142位点是浙南地区原发性痛风的易感基因位点,提示A等位基因提高了痛风患者的尿酸水平,携带AA基因型的个体更易患痛风。     

Association of MIR146A rs2910164 variation with a predisposition to sporadic breast cancer in a Pakistani cohort

Single‐nucleotide polymorphisms (SNPs) in genes coding for microRNAs (miRNAs) play a pivotal role in the progression of breast cancer (BC). We investigated the association of miR‐146a rs2910164 GC polymorphism with the risk of BC in the Pakistani population. The miR‐146a rs2910164 polymorphism was genotyped in 300 BC cases and 300 age‐ and gender‐matched healthy controls using T‐ARMS‐PCR. Genotype and allele frequencies were calculated and the association between genotypes and the risk of BC was calculated by odds ratio (OR) and confidence interval (95%). A significant difference in genotypic frequencies (χ² = 63.10; P = <0.0001) and allelic frequencies (OR = 0.3955 (0.3132–0.4993); P = < 0.0001) was observed between cases and controls. Furthermore, we also found that miR‐146 rs2910164 CC homozygote increased the risk of BC in the dominant (OR = 0.2397 (0.1629–0.3526); P = 0.0001; GG vs. GC + CC) and recessive (OR = 2.803 (1.865–4.213); P = <0.0001; CC vs. GC + GG) inheritance models. In summary, miR‐146a rs2910164 GC is significantly associated with BC in the Pakistani population. To our knowledge, this is the first study that assessed MIR146a rs2910164 G > C SNP in Pakistani population. By analyzing the secondary structure of MIR146A variant, a significant structural modification was noted. Study with a larger sample size is needed to further confirm of these findings.