HLA-Ⅰ基因单核苷酸多态性与中国南方汉族女性乳腺癌易感性的相关性研究

目的:探讨位于白细胞抗原复合体基因HLA-Ⅰ区域的17个单核苷酸多态性位点与中国南方汉族女性乳腺癌易感性的相关性。方法:应用Sequenom MassArray iPLEX检测系统对所选位点在267例乳腺癌患者和274例健康对照女性中进行基因分型分析。χ2检验分析各位点基因型分布频率在病例组和对照组中的差异,非条件Logistic回归评价多态性位点与乳腺癌遗传易感性的相关性。另外,根据临床治疗中癌组织ER、PR和HER-2状态进行分层分析。结果:所选位点在中国南方汉族女性中均存在多态性,其中rs9260682遗传多态性与乳腺癌易感性显著相关,与AA基因型相比,AT基因型可增加携带者乳腺癌的患病风险(P=0.04),且与HER-2阴性乳腺癌相关(P=0.04);rs9260734位点多态性分布在病例-对照分组中无显著性差异(P=0.25),但AA基因型与PR阴性乳腺癌相关(P=0.048);其余位点与乳腺癌易感性、ER、PR和HER-2状态均无显著相关性。结论:位于HLA-Ⅰ基因区域的多态性位点rs9260682既与乳腺癌易感性相关,又与HER-2阴性乳腺癌相关,而rs9260734位点的AA基因型与PR阴性乳腺癌相关。     

广东汉族女性TAP2基因单核苷酸多态性与散发性乳腺癌相关性研究1

目的:探讨TAP2 (Antigen Peptide Transporter 2)基因单核苷酸多态性(single nucleotide polymorphisms,SNP)与广东汉族女性乳腺癌发生的相关性.方法:利用Sequenom系统对来自南方医科大学南方医院的216例广东汉族乳腺癌患者及216人健康对照组的TAP...     

VARS2基因单核苷酸多态性和广东汉族女性散发性乳腺癌相关性研究

目的探讨VARS2(valyl-tRNA synthetase 2)基因中单核苷酸多态性位点(single nucleotide polymorphisms,SNP)rs2249464与广东省汉族女性散发性乳腺癌的相关性。方法采用MassARRAY-IPLEX SNP分型技术,以南方医科大学南方医院的216例广东汉族乳腺癌患者及216例同期健康体检者为研究对象,对rs2249464多态性位点进行基因分型,利用χ2检验统计分析病例组和对照组的基因型频率有无差异,利用非条件Logistic回归计算比数比(odds ratio,OR)和95%可信区间(confidence interval,CI)来评价此位点多态性与乳腺癌的相关性。然后进一步将病例组按雌激素受体(estrogen receptor,ER)和孕激素受体(progesterone receptor,PR)免疫组化结果行分层分析。结果 rs2249464位点C/C,C/T,T/T 3种基因型分布在对照组和病例组之间有统计学差异。根据免疫组化情况进一步分层分析结果表明rs2249464的基因型分布在ER阳性/阴性组之间的差异无统计学意义(P>0.05);但在PR阳性/阴性组之间的差异有统计学意义(P<0.05)。结论 VARS2基因rs2249464位点单核苷酸多态性与广东汉族散发性乳腺癌的易感性具有相关性,且携带T/T基因型的患者更容易罹患PR阴性乳腺癌。     

单核苷酸多态性与疾病易感性

连锁分析方法的发现给基因研究带来巨大进展 .任何易感基因的探测都应被已知基因组学图谱的基因标记 .研究人员必须建立一张包含有数百对作为标记物基因的基因图谱 .在随后发现的更精确的标记物包括Alps(限制断片长度多态性 ) ,Vntrs(变数串联重复体 )和最近发现的Snps(单核苷酸多态性 ) .将来 ,更多数量更有价值的基因标记物在不断发现 .同时 ,遗传流行病学已发展新的更有效的统计学方法和生物信息处理工具来分析基因数据 ,这些先进的研究方法的高效率在以往是不能想像的 .这能让我们从有限的研究对象中得到更多的有用数据 .将来 ,可望基…     

单核苷酸多态性与大肠癌遗传易感性

大肠癌遗传易感性与单核苷酸多态性(SNP)的关系是近年来研究的热点。研究发现COX2,MTHFR等代谢相关基因的某些SNP与大肠癌的发病风险相关,其中携带COX2 9850G-10335A单倍型的个体可显著增加患大肠癌的风险。MMP家族是调控大肠癌侵袭转移的重要基因,MMP7-181G等位型频率可显著增加大肠癌淋巴结转移风险。进一步寻找大肠癌特异性SNP,对筛选大肠癌高危人群,预估发病风险,具有重要意义。     

STK15 Phe31Ile基因多态性与乳腺癌易感性的Meta分析

目的探讨STK15 Phe31Ile基因多态性与乳腺癌易感性的关系。方法由两名评价员以＂STK15/Aurora/BTAK＂、＂polymorphism＂、＂SNPs＂、＂breast cancer＂、＂Phe31Ile＂、＂基因多态性＂、＂乳腺癌＂、＂易感性＂等为主题词分别检索Pubmed、EMbase、SCI、Web of Science、CNKI、VIP、万方等中英文数据库,未进行语种限制。对所获文献进行质量评价、筛选和提取相关病例对照研究资料,并以OR值及95%可信区间为效应指标,对照组基因型频数分布均符合Hardy-Weinberg遗传平衡定律。利用Stata10.0软件进行Meta分析。结果最终纳入7项病例对照研究进行Meta分析,其中病例组5615例,对照组7539例。以STK15 Phe/Phe或Phe/Ile基因型携带者为参照,携带Ile/Ile基因型的个体患乳腺癌的风险显著增加,（OR=1.23,95%CI=1.00-1.50）。结论 STK15 Phe31Ile位点多态性与乳腺癌易感性相关,Ile/Ile基因型为乳腺癌的易感基因型。     

ATM基因rs227060位点单核苷酸多态性与肺癌易感性的相关性

目的:探讨共济失调毛细血管扩张症突变基因(ataxia telangiectasia mutated,ATM)rs227060位点单核苷酸多态性(single nucleotide polymorphisms,SNPs)与肺癌易感性之间的相关性.方法:采用聚合酶链反应-SNP敏感性分子开关方法,检测225例肺癌患者和128例健康体检者ATM基因rs227060多态位点等位基因以及基因型频率分布特点;并应用非条件Logistic回归法统计分析rs227060单核苷酸多态性与肺癌的相关性.结果:rs227060多态位点共检测出CC,CT,TT三种基因型和C,T两种等位基因,其在肺癌组与对照组的基因型分布频率为:CC基因型17.3％与29.7％、CT基因型61,4％与59.3％、TT基因型21.3％与11％,两组间基因型频率和等位基因频率分布差异均有统计学意义(P＜0.05).在对ATM rs227060基因型的多态性分析过程中发现:吸烟史在肺癌组与对照组相比差异无统计学意义(P＞0.05),而年龄、性别、肿瘤家族史在肺癌组与对照组相比差异均有统计学意义(P＜0.05);且以CC基因型作为对照,携带TT基因型的个体患肺癌的风险是携带CT基因型个体的3.49倍(OR=1.829;95％CI:1.045～3.199).结论:ATM基因rs227060位点单核苷酸多态性与肺癌易感性存在相关性,且携带TT基因型可增加肺癌的发病风险.     

IL-10、MD-1基因单核苷酸多态性与哮喘易感性的相关性研究

目的:分析IL-10基因 rs1800896、rs3024492位点和髓样分化蛋白1(Myeloid differentiation 1,MD-1)基因rs7740529、rs2233128位点单核苷酸多态性(Single nucleotide polymorphism,SNP)与哮喘遗传易感性的相关性以及过敏性鼻炎(Allergic rhinitis,AR)对哮喘遗传易感性的影响.方法:应用Sequenom MassARRAY○ R SNP分型技术对141例哮喘患者和145例正常对照的四个SNP位点(rs1800896、rs3024492、rs7740529、rs2233128)进行基因分型,再将哮喘患者中确定有过敏性鼻炎和无过敏性鼻炎者分别与正常对照组比较.χ2检验统计分析病例组和对照组的基因型频率;采用非条件Logistic回归校正年龄、性别影响,计算比数比(OR)和95%可信区间(CI),以此评价各位点多态性与哮喘遗传易感性的相关性以及过敏性鼻炎对哮喘易感性的影响.结果:(1)IL-10 rs1800896多态性位点GG、GA、AA三种基因型分布频率在哮喘组、哮喘和过敏性鼻炎共患组、哮喘而无鼻炎组的分布频率和对照组相比,差异均有统计学意义(P＜0.001),有无过敏性鼻炎对其影响不明显.相较GG或AA基因型,携带基因型GA的个体,哮喘的患病风险明显降低(OR=0.033,95%CI:0.017～0.065).(2)MD-1 rs7740529位点CC、CT、TT三种基因型分布频率在哮喘患者组、哮喘和过敏性鼻炎共患组、哮喘而无鼻炎组的分布频率和对照组相比,差异也均有统计学意义(P≤0.005),有无过敏性鼻炎对其影响不明显.相比较CC或TT基因型,携带基因型CT的个体,哮喘的患病风险明显降低(OR=0.369,95%CI:0.225～0.606).(3)IL-10 rs3024492位点TA、AA基因型和MD-1 rs2233128位点AG、GG基因型在哮喘人群中的分布频率与对照组相比无统计学意义(P＞0.05).结论:IL-10 rs1800896与MD-1 rs7740529位点多态性与哮喘的遗传易感性相关,其杂合型的患病风险均明显降低,且有无过敏性鼻炎对其影响不明显.     

卵磷脂胆固醇酰基转移酶基因单核苷酸多态性与冠心病脂代谢易感性的关联研究

目的：检测卵磷脂胆固醇酰基转移酶（lecithin cholesterol acyltransferase,LCAT）基因3个编码区单核苷酸多态位点在中国人群中的分布频率，并初步探讨它们与脂代谢和冠状动脉粥样硬化性心脏病（coronary atherosclerotic heart disease,CHD）易感性的关系。方法：采用聚合酶链反应－限制性片段长度多态性方法，分析209名正常人和203例CHD患者中608C／T、911T／C和1188C／T（参照序列：NM_000229）3个位点的多态性。结果：608C和608T等位基因频率分布符合Hardy-Weinberg平衡。CHD患者组608T频率显著低于正常人群（P＝0．034）。与无608T CHD患者相比，具有608T的CHD患者的血浆高密度脂蛋白胆固醇显著升高（P＝0．015）。911T／C和1188C/T在两组中均未检出。结论：LCAT基因608T等位基因与CHD患者较高的血浆高密度脂蛋白胆固醇水平相关联，可能与中国人CHD相关。911T／C和1188C／T在中国人群中非常罕见。     

中国汉族人群TIRAP基因编码区多态性与结核病易感性的相关性研究

目的 筛选中国汉族人群Toll/白细胞介素1受体结构域衔接蛋白(TIRAP)基因编码区多态性位点,并分析其与结核病易感性的相关性.方法 在小样本中测序筛选TIRAP基因编码区多态性位点,再用连接酶特异检测技术在大样本中进行单核苷酸多态性(SNP)分型,并通过统计学方法分析基因多态性与结核病易感性的相关性.结果 共筛选到4个TIRAP基因编码区多态性位点.G394A位点在结核病病人中的突变频率高于健康人,但是该位点等位基因频率在两组人群中的差异没有统计学意义(P>0.05).G164A位点跟结核病病情有关,复治病人与健康人该位点等位基因差异具有统计学意义(P<0.05),同时肺部形成空洞病人与菌阳病人突变率均比健康人要低.结论 TIRAP 基因编码区多态性可能是中国汉族人群结核病发生发展的危险因素.

Abstract：

Objective To detect specific polymorphisms in Toll-interleukin 1 receptor domain containing adaptor protein(TIRAP) coding region for Chinese Han population, and verify whether they are associated with susceptibility to tuberculosis. Methods Search TIRAP polymorphisms by sequencing in small sample; detect single nucleotide polymorphism(SNP) by ligase detection reaction technique in large sample; analyze whether polymorphisms are related to tuberculosis by statistic methods. Results Four polymorphisms were present in the TIRAP coding region. 394A had higher frequencies in the tuberculosis(TB)group than the control. But allelic and genotypic analysis showed that there were no significant difference in statistic between TB patients and controls(P>0.05). The SNP G164A mutation related with TB patient's condition. Comparing to controls, retreatment patients' allelic frequencies had significant difference in statistic(P<0.05), sputum positive patients and lung cavitation patients had lower 164A frequencies. Conclusion TIRAP coding region polymorphisms may be risk factors for TB occurrence and development in Chinese Han population.     

骨保护素基因单核苷酸多态性与类风湿关节炎发病的相关性研究

 目的：探讨骨保护素（OPG）基因163A/G及245T/G单核苷酸多态性（SNPs）与我国汉族人群类风湿关节炎（RA）发病的相关性。方法：采用聚合酶链反应-限制性片段长度多态性（PCR-RFLP）技术检测我国南方汉族正常人群及RA患者的OPG 163A/G 和245T/G 2个SNP位点;进行Hardy-Weinberg平衡检验;计算基因型和等位基因频率,及这2个位点的连锁关系,并分析这2个SNP位点与RA的关系。结果：所研究基因分布符合Hardy-Weinberg平衡,163A/G 位点基因型AA、AG、GG分布频率在2组比较有显著差异（P<0.05）;等位基因A、G分布比较在2组有显著差异（P<0.05）,携带163GG基因型者发生RA的危险性是非携带者的1.219倍（OR=1219, 95％CI：1066~2.339, P<0.05)。但245T/G位点各基因型及等位基因频率在2组中均未见差异（P>005）。结论：OPG 基因 163A/G SNP可能与我国汉族人群RA发病相关,携带G等位基因可能是发病的危险因素。     

Association of ABCB1 and VEGFA gene polymorphisms with breast cancer susceptibility and prognosis

Breast cancer (BC) is the most common cause of cancer-related death in women worldwide. Several ABCB1 and VEGFA gene polymorphisms, such as ABCB1-G1199 T/A (rs2229109), VEGFA -634 G > C (rs2010963), VEGFA 2578 C > A (rs699947) and VEGFA 7 C > T (rs25648) have been associated with risk of BC and clinical outcomes. The purpose of this study was to evaluate the association between these gene polymorphisms and BC risk and prognosis.A retrospective case-control study was conducted, including 84 BC cases and 119 controls of Spanish (European, Caucasian) origin. ABCB1-G1199 T/A (rs2229109), VEGFA -634 G > C (rs2010963), VEGFA 2578 C > A (rs699947) and VEGFA 7 C > T (rs25648) gene polymorphisms were analysed by TaqMan®.The genotypic logistic regression model adjusted by aged revealed no association with any of the polymorphisms and BC risk, although the C-allele of VEGFA 2578 C > A showed a trend to higher BC risk in the allelic and recessive models (p = 0.055 and 0.054, respectively). There was no influence of these gene polymorphisms on overall survival (OS). The univariate Cox model showed that carriers of the A-allele for VEGFA 2578 C > A tended to have longer OS compared to CC patients (CC vs A-allele Hazard ratio (HR): 2.08; CI95 % = 0.96–4.49; p = 0.0587). There was no association between the gene polymorphisms analysed and disease-free survival (DFS). The univariate Cox model showed a trend toward a longer DFS in patients carrying ABCB1-G1199 T/A GG genotype compared to those with A-allele (GG vs A-allele HR: 0.43; CI95 % = 0.18–1.03; p = 0.0612).No influence of ABCB1-G1199 T/A (rs2229109), VEGFA -634 G > C (rs2010963), VEGFA 2578 C > A (rs699947) and VEGFA 7 C > T (rs25648) gene polymorphisms on risk of developing BC was found in our study. There was no association between the polymorphisms studied and DFS and OS.     

Association of single nucleotide polymorphisms of CDH13 gene with metabolic syndrome among ethnic Han ChineseCSCD

Objective: To assessthe association of single nucleotide polymorphisms (SNPs) of the T-cadherin (CDH13) gene with metabolic syndrome (MS) among ethnic Han Chinese. Methods: Genotypes of 6 SNPs(rsll646213, rsl2596316, rs3865188, rsl2444338, rsl2051272, and rs7195409) of the CDH13 gene among 453 patients with MS and 526 controls were determined with a TaqMan method, and their association with MS was assessed. Results: For 5 SNPs (rsll646213, rs3865188, rsl2444338, rsl2051272, and rs7195409), no difference was found in allelic and genotypic frequencies of the CDH13 gene between the two groups. Comparing with rsl2596316 (AA+GG) genotype, rsl2596316 AG genotype has significantly increased the risk of MS(P = 0.01, OR=1.38, 95%CI: 1.07-1.78), though no association was found between particular alleles of the rsl2596316 with MS. There was no difference in the frequencies of rsll646213-rsl2596316-rs3865188-rsl2444338-rsl2051272 haplotype between the two groups(P>0.05). Conclusion: No association was found between the five SNPs (rsll646213, rs3865188, rsl2444338, rsl2051272 and rs7195409) of the CDH13 gene with the MS, while the rsl2596316AG genotype of the CDH13 gene is associated with the susceptibility to MS among ethnic Han Chinese. © 2018 West China University of Medical Sciences. All rights reserved.     

Association of three single nucleotide polymorphisms of ESR1 with breast cancer susceptibility: a meta-analysis

Expression of estrogen receptors is correlated with breast cancer risk, but inconsistent results have been reported. To clarify potential estrogen receptor (ESR)-related breast cancer risk, we analyzed genetic variants of ESR1 in association with breast cancer susceptibility. We performed a meta-analysis to investigate the association between rs2234693, rs1801132, and rs2046210 (single nucleotide polymorphisms of ESR1), and breast cancer risk. Our analysis included 44 case-control studies. For rs2234693, the CC genotype had a higher risk of breast cancer compared to the TT or CT genotype. For rs2046210, the AA, GA, or GA + GG genotype had a much higher risk compared to the GG genotype. No significant association was found for the rs1801132 polymorphism with breast cancer risk. This meta-analysis demonstrates association between the rs2234693 and rs2046210 polymorphisms of ESR1 and breast cancer risk. The correlation strength between rs2234693 and breast cancer susceptibility differs in subgroup assessment by ethnicity.     

中国汉族群体中PDCD1基因多态性与结直肠癌的相关性CSCD

目的探讨程序性细胞死亡受体1（ programmed cell death 1,PDCD1）基因多态性与结直肠癌的发生发展的关联性。方法应用聚合酶链反应-限制性片段长度多态性（PCR-restriction fragment length polymorphism, PCR-RFLP）方法对426例结直肠癌患者及500名正常个体的rs36084323、rs11568821、rs2227981、rs2227982和rs10204525位点进行多态性分析。结果rs36084323位点G等位基因在显性遗传模型下与TNM分期进展期结直肠癌的发生正关联（OR＝1.59,95%CI：1.02～2.48）。rs36084323、rs11568821、rs2227981、rs2227982和rs10204525位点组成的单倍型G-G-C-T-A和A-G-C-C-G与结直肠癌的发生负关联。结论PDCD1基因rs36084323位点AG和GG基因型与TNM分期进展期的结直肠癌存在正关联。而G-G-C-T-A和A-G-C-C-G单倍型与结直肠癌的发生负关联。     

Association between single nucleotide polymorphisms in the hMSH3 gene and sporadic colon cancer with microsatellite instability

The association between three single nucleotide polymorphisms (SNPs) in the hMSH3 gene and sporadic colon cancer with microsatellite instability (MSI) was analyzed. Of the three SNPs observed in this population, SNPs at residues 235 and 693 were novel, while that at residue 3133 was previously described. The SNPs at residues 235 and 3133 caused amino acid substitutions, V79I and T1045A, respectively. We analyzed the allele frequencies of the three SNPs in samples from 19 patients with sporadic colon cancer with MSI and 90 healthy controls. We found that the V79 allele frequency was significantly higher in the tumor samples than in controls. In addition, the frequency of the G693 allele showed a higher trend in the tumor samples than in controls. These results indicated that some SNPs in the hMSH3 gene were associated with colon cancer with MSI. Received: February 16, 2000 / Accepted: February 25, 2000     

人BLCAP基因单核苷酸多态性与宫颈癌的相关性

人膀胱癌相关蛋白 (BLCAP)基因是本研究室从细胞原癌、抑癌基因分类芯片中筛选并克隆的宫颈癌候选抑癌基因。为检测该基因调控区的单核苷酸多态性 (SNP)及其不同基因型与宫颈癌的相关性 ,采用病例 对照研究方法及动态等位基因杂交 (DASH)技术 ,对 30例原发性宫颈癌患者和 6 0例正常人BLCAP基因调控区的 2个SNP位点进行了检测。结果显示 :位于BLCAP基因下游调控区的SNPrs3795 14 7位点存在AA、AC和CC 3种基因型 ,且与宫颈癌发病存在显著相关性 (P <0 0 1)。SNPrs3795 14 7处在BLCAP基因下游调控区域 ,其多态类型可能在某种程度上影响BLCAP基因的表达调控 ,从而进一步支持了 :BLCAP基因与宫颈癌的发生、发展可能存在密切关系。     

免疫调节基因多态性与乳腺癌关联的研究进展

机体免疫系统的功能状态是影响乳腺癌发生和发展的一个重要因素，受复杂精确的调节网络所控制，该网络任何环节发生异常都会使正常免疫调节失去平衡，影响其功能的发挥。免疫调节基因决定了各种免疫调节因子的数量和质量，因此在免疫调节中发挥了关键作用。在基因组中，由核苷酸水平上的差异引起的DNA序列多态性称为单核苷酸多态性（SNP），它们构成了人类遗传变异的主要部分。乳腺癌相关的免疫调节基因的单核苷酸多态性及单体型研究成为近年来国外研究的热点之一，研究表明，免疫调节基因的多态性在调节乳腺癌患者的免疫功能方面起着重要作用，影响乳腺癌的治疗和预后。