间充质干细胞介导"酶-前药基因"CYP1A2靶向抗肿瘤效应研究

目的 将人细胞色素P450 1A2(CYP1A2)基因转染骨髓间充质干细胞(BMSC),检测转基因BMSC协同化疗前药达卡巴嗪(DTIC)对人恶性淋巴瘤细胞株Raji细胞的靶向促凋亡作用,为以间充质干细胞为载体的"基因介导的酶-前药双靶向抗肿瘤策略"提供体外实验依据.方法 从人肝细胞中克隆CYP1A2基因,构建真核表达载体,分离、鉴定并培养BMSC,脂质体法将CYP1A2基因导入BMSC和Raji细胞中,RT-PCR和Westem blot法检测CYP1A2基因的表达,Transwell法检测BMSC的肿瘤靶向性,MTT法检测转基因Raji细胞对DTIC敏感性的改变,Annexin V/PI染色标记法检测转基因BMSC联合DTIC诱导Raji细胞凋亡的作用.结果 成功克隆CYP1A2基因并将构建的真核表达载体转染BMSC和Raji细胞,流式细胞术检测体外诱导分化结果符合BMSC特性,RT-PCR和Westernblot检测到转基因细胞中CYP1A2表达,Transwell迁移实验证实BMSC有肿瘤趋向性,MTT法检测显示DTIC呈剂量依赖性抑制转CYP1A2基因的Raji细胞生长,而转CYP1A2基因的BMSC细胞对DTIC相对耐受(IC50值分别为1.67 mmol/L和7.53 mmol/L,P＜0.01).Armexin V/PI染色法显示CYP1A2能够使细胞在体外代谢DTIC,产生细胞毒效应使肿瘤细胞凋亡,而且具有旁观者效应.结论 CYP1A2可使细胞在体外代谢DTIC产生细胞毒效应.以BMSC为载体的CYP1A2-DTIC酶-前药系统可发挥双靶向抗肿瘤作用,在体外诱导人恶性淋巴瘤细胞凋亡.     

间充质干细胞向肿瘤组织归巢的潜能

间充质干细胞(MSC)足骨髓中的非造血干细胞,具有自我更新和多系分化的潜能.近年来研究发现,MSC除了具有免疫抑制、支持造血、成骨潜能和修复损伤组织等作用,还可以向肿瘤组织归巢,参与肿瘤微环境的构成.本文结合MSC向炎症、损伤部位归巢的机制,讨论其在白血病等恶性肿瘤发生中的作用及存基因靶向治疗中的运用前景.     

脂质体介导胞嘧啶脱氨酶基因转染鼠骨髓间充质干细胞

背景:自杀基因独有的旁观者效应,可显著提供肿瘤细胞杀伤效果,同时还与放射治疗、免疫摹因治疗联合应用,并克服了基因转导效率低的缺陷.胞嘧啶脱氨酶(cytosine deaminase,CD)即可产生强大的旁观者效应.目的:观察脂质体介导真核表达载体CD基因转染鼠骨髓间充质干细胞的效果及其基因表达.设计、时间及地点:细胞学基因水平实验,于2007-05/12在大连理工大学干细胞与组织工程研发中心完成.材料:SPF级C57BL纯系小鼠6只,由大连医科大学实验动物中心提供.连接产物转化感受态大肠杆菌DH5 α由大连理工大学干细胞与组织工程研发中心提供.LipofectamineTM 2000脂质体为Invitrogen产品.方法:取连接产物转化感受态大肠杆菌DH5 α,提取质粒DNA,对质粒pIRES2-AcGFP1-CD进行Xhol和BamHI双酶切,用于转染.取小鼠双侧下肢股骨和胫骨,贴壁法分离纯化骨髓间充质干细胞,传至第3代制成单细胞恳液,加入荧光标记的CD44,CD45,CD90,CD105抗体后,采用Lipofectamine 2000介导法转染第3代骨髓间充质干细胞.主要观察指标:重组质粒的鉴定,流式细胞仪检测骨髓间充质干细胞表面标记表达,细胞转染后CD基因的表达.结果:质粒pIRES2-AcGFP1-CD酶切产物经琼脂糖凝胶电泳后,于1.0～1.5 kb处有一条带出现,符合CD基因长度.细胞表面标记CD45呈阴性,CD44,CD90,CD105呈阳性.pIRES2-AcGFP1-CD基因转染36 h后,荧光倒置相差显微镜下可见小鼠骨髓间充质干细胞有绿色荧光蛋白的表达,48 h后细胞仍有荧光表达,且强度明显增强.结论:脂质体介导的CD基因在鼠骨髓间充质干细胞中成功表达,于转染48 h后达峰值.     

间充质干细胞基因转染的相关研究现状

目的:对间充质干细胞的基因转染进行介绍,以及对骨形态发生蛋白、转化生长因子、血管内皮细胞生长因子等转染间充质干细胞的相关研究进行综述。资料来源:应用计算机检索Pubmed1999-01/2007-01间充质干细胞基因转染的文章,检索词"mesenchymal stem cells,gene transfer",文章语言限定为英语,同时检索中文CNKI全文数据库1999-01/2007-01间充质干细胞基因转染的文章,检索词"间充质干细胞,基因转染",文章语言限定为中文。资料选择:对资料进行初审,并查看每篇文章后的引文。纳入间充质干细胞基因转染的相关实验研究及综述文献,排除陈旧、重复文献。资料提炼:共收集到165篇相关文献,入选29篇。资料综合:间充质干细胞具有高可塑性、可移植性、易接受外源基因、可以传送基因、自身可以参与组织修复等特点,被广泛应用于骨形态发生蛋白、转化生长因子、血管内皮细胞生长因子等的转染,成为基因治疗的理想靶细胞。但间充质干细胞转基因技术在基因工程中还面临一些问题,如完善转基因技术,以及使转染后的靶细胞具有更大的生物效应等。结论:随着研究的进一步深入,间充质干细胞介导的细胞和基因治疗将会逐步成熟,有望更好的用于临床治疗。     

Lipofectamine介导胞嘧啶脱氨酶基因转染鼠骨髓间充质干细胞

背景:自杀基因独有的旁观者效应,可显著提供肿瘤细胞杀伤效果,同时还与放射治疗、免疫基因治疗联合应用,并克服了基因转导效率低的缺陷.胞嘧啶脱氨酶即可产生强大的旁观者效应.目的:观察脂质体介导真核表达载体胞嘧啶脱氨酶基因转染鼠骨髓间充质干细胞的效果及其基因表达.设计、时间及地点:细胞学基因水平体外实验,于2007-05/12在大连理工大学干细胞与组织工程研发中心完成.材料:SPF级C57BL纯系小鼠6只,体质量18-20 g,用于骨髓间充质干细胞的分离培养.连接产物转化感受态大肠杆菌DH5a由大连理工大学干细胞与组织工程研发中心提供.Lipofectamine~(TM)2000脂质体为Invitrogen产品.方法:取连接产物转化感受态大肠杆菌DH5a,提取质粒DNA,对质粒plRES2-cGFP1-CD进行Xhol和BamHI双酶切,用于转染.取小鼠双侧下肢股骨和胫骨,贴壁法分离纯化骨髓间充质干细胞,传至第3代制成单细胞悬液,加入荧光标记的CD44,CD45,CD90,CD105抗体后,采用Lipofectamine~(TM)2000介导法转染第3代鼠骨髓间充质干细胞.主要观察指标:重组质粒的鉴定,流式细胞仪检测鼠骨髓间充质干细胞表面标记表达,荧光倒置显微镜观察细胞转染36,48 h后胞嘧啶脱氨酶基因的表达.结果:质粒plRES2-AcGFP1-CD酶切产物经琼脂糖凝胶电泳后,于1.0～1.5 kb处有1条带出现,符合胞嘧啶脱氨酶基因长度.流式细胞仪检测显示细胞表面标记CD45呈阴性,CD44,CD90,CD105呈阳性.plRES2-AcGFP1-CD基因转染36 h后,荧光倒置相差显微镜下可见小鼠骨髓间充质干细胞有绿色荧光蛋白表达,48 h后细胞仍有荧光表达,且强度明显增强.结论:脂质体介导的胞嘧啶脱氨酶基因在鼠骨髓间充质干细胞中成功表达,于转染48 h后达峰值.     

间充质干细胞向肝细胞分化研究

目的探讨间充质干细胞在体外诱导分化为肝细胞后,细胞增殖能力和免疫抑制能力等干细胞生物学的改变。方法间充质干细胞在体外进行向肝细胞诱导分化培养,分化为具有部分成熟肝细胞功能的肝细胞样细胞,并对这些肝细胞样细胞继续培养。流式细胞仪检测细胞表型,BrdU法检测细胞增殖能力,与CD4＋T淋巴细胞共孵育实验检测细胞免疫抑制实验。结果间充质干细胞分化为肝细胞后,虽然具备了部分成熟肝细胞的功能,亦丧失了间充质干细胞本身的一些特性;BrdU法测增值能力,其OD值从1.859±0.117降到1.24±0.103,抑制CD4＋T细胞激活的能力从94.8%（100%-5.2%）降到68.8%（100%-31.2%）等;而且分化后的细胞处于不稳定的分化状态,继续培养后,其细胞生物学相关特性和功能均出现去分化的现象,比如增殖能力恢复到OD值为1.501±0.229,免疫抑制能力恢复到81.8%（100%-18.2%）。这种不稳定的状态,进入体内后,是否会增加突变或致癌的概率,仍需进一步的研究。结论间充质干细胞比其向肝细胞诱导分化后的细胞更具安全性,更适合肝病治疗。     

异基因造血干细胞移植后受者骨髓的间充质干细胞来源研究

为了研究造血干细胞移植植活患者骨髓源间充质干细胞（MSC）的来源，选择临床上供受者性别不同的造血干细胞移植后临床植活的34例患者作为研究对象，抽取骨髓，进行间充质干细胞培养传代，利用流式细胞术（FCM）检测患者MSC的表面抗原表达特征，利用聚合酶链反应（PCR）分析患者MSC的釉基质基因表达情况以确定其性别来源，利用荧光原位杂交（FISH）技术进一步证实患者MSC的性别来源。结果表明：34例患者中有31例患者的MSC原代培养能达到融合，其中24例患者成功传代5代以上，且可进行PCR及FISH检测；FCM结果显示，第5代MSC的CD14^＋CD45^＋细胞表达低于0．04％；PCR结果显示，移植后患者的MSC源于患者本人；FISH结果显示，移植后患者的MSC 100％源于患者本人。结论：造血干细胞移植后患者骨髓中的MSC仍源于患者本人。     

腺病毒介导人转化生长因子β2基因转染诱导骨髓间充质干细胞向软骨细胞的定向分化

背景:前人的工作已证实转化生长因子β1能促进骨髓间充质细胞的增殖,诱导其向软骨细胞分化.目的:进一步验证人转化生长因子β2(human transforming growth factor-β2,hTGFβ2)基因转染诱导骨髓间充质干细胞向成骨细胞定向分化作用.方法:取清洁级3周龄雄性Lewis大鼠16只,用于分离培养骨髓间充质干细胞.通过腺病毒重组载体Ad-hTGFβ2将外源性hTGFβ2基因转染到体外培养的第2代大鼠骨髓间充质干细胞中,48 h后采用免疫组织化学染色、RT-PCR和Western blotting的方法检测转染细胞中目的基因与软骨特异性蛋白--Ⅱ型胶原和蛋白多糖表达的情况.结果与结论:从成体大鼠骨髓组织中培养出骨髓间充质干细胞,体外培养呈成纤维细胞样,能大量稳定增殖传代.Ad-hTGFβ2转染骨髓间充质干细胞获得稳定表达,免疫组织化学染色和Western blotting检测到基因转染细胞中Ⅱ型胶原蛋白的合成表达,RT-PCR检测到Ⅱ型胶原和蛋白多糖aggrecan mRNA的表达.结果提示,从骨髓组织中可获得具有多分化潜能的间充质干细胞,并能在体外稳定增殖传代;Ad-hTGFβ2成功转染骨髓间充质干细胞,诱导其向软骨细胞分化.     

2型重组腺相关病毒介导增强型绿色荧光蛋白在大鼠骨髓间充质干细胞的表达

目的:观察携带增强型绿色荧光蛋白的2型重组腺相关病毒(rAAV_2-EGFP转导骨髓间充质干细胞(MSCs)的效率、表达时间及对细胞增殖的影响。方法:体外培养出MSCs,经传代5次、鉴定后分为2组,rAAV_2组中按感染复数10~6加入0.1 ml rAAV_2-EGFP;PBS组中加入0.1 ml PBS,培养后再传代5次。用流式细胞仪检测2组P5和P10代细胞EGFP转导率,同时绘制2组P10细胞生长曲线。结果:rAAV_2组P5和P10代MSCs转导率分别为21.71%±1.02%、20.34%±1.13%,差异无统计学意义(P=0.862)。生长曲线显示rAAV_2组细胞生长较PBS组缓慢。结论:rAAV_2-EGFP转导MSCs效率可,表达时间长,对细胞增殖稍有影响,标记后的细胞可用于观察干细胞在体内的存活、迁徙及分化。     

骨髓间充质干细胞防治心肌细胞凋亡的基因及蛋白研究

背景:骨髓间充质干细胞移植后可作用于心肌细胞,防止心肌细胞损伤的发生或继发性的病变.目的:分析骨髓间充质干细胞对心肌细胞凋亡的基因蛋白表达影响.方法:由第一作者检索1997/2010 PubMed数据及万方数据库有关骨髓间充质干细胞、心肌细胞凋亡以及基因蛋白表达等方面的文献.结果与结论:骨髓间充质干细胞以其获取方便、分化能力强、低免疫原性、无排斥反应等特点成为研究的重点.骨髓间充质干细胞能够作用于心肌细胞,防止心肌细胞损伤的发生或继发性的病变,主要是通过调控Bcl-2、Bax、Fas、FasL、Caspase等基因蛋白的表达,抑制心肌细胞凋亡的发生,对于运动过程中出现的因心肌细胞凋亡而影响其成绩下降的现象具有一定的保护作用和应用价值.     

Genetic polymorphisms of drug-metabolizing phase I enzymes CYP2E1, CYP2A6 and CYP3A5 in South Indian population

CYP2E1, CYP2A6 and CYP3A5 enzymes belong to phase I group of drug-metabolizing enzymes, which are involved in the metabolism of various compounds and xenobiotics. Presence of polymorphisms in the genes coding for these enzymes results in interindividual variations in drug metabolism, therapeutic response and susceptibility towards various diseases. The frequencies of these variants in genes differ considerably between ethnic groups. This study was carried out to estimate the allele and genotype frequencies of common variants in CYP2E1, CYP2A6 and CYP3A5 in South Indian population. Six hundred and fifty-two unrelated healthy volunteers of South Indian origin (Andhra Pradesh, Karnataka, Kerala and Tamil Nadu) were included in this study. Polymerase chain reaction-restriction fragment length polymorphism, allele-specific PCR, real-time PCR, SNaPshot and gene sequencing methods were used for the identification of gene polymorphisms. The frequencies of CYP2E1*1B, CYP2E1*5B and CYP2E1*6 alleles in South Indian population were 14.3, 1.3 and 22.4%, respectively. The frequencies of CYP2A6*2, CYP2A6*4A and CYP2A6*5 alleles were found to be 1, 8.9 and 0.7%, respectively. The distribution of CYP3A5*3 allele was 63.5%. There were no variant alleles of CYP3A5*2, CYP3A5*4 and CYP3A5*6 in South Indian population. The frequencies of CYP2E1, CYP2A6 and CYP3A5 in the South Indian population are distinct from Caucasians, Chinese, Japanese, African Americans and other compared populations. This is the first study conducted in the South Indian population with a larger sample size. The findings of our study provide the basic genetic information for further pharmacogenomic investigations in the population.     

The effect of transcatheter arterial chemoembolization on CYP1A2 activity in patients with hepatocellular carcinoma

Aim: CYP1A2, a constitutive enzyme expressed in the liver, is among the phase I enzymes responsible for polycyclic aromatic hydrocarbons metabolism. Phenacetin O‐de‐ethylation is a marker for CYP1A2 activity. This study investiagtes the metabolism of phenacetin in patients with hepatocellular carcinoma (HCC). Methods: The phenacetin test was performed in 56 normal subjects and 92 HCC patients. The test was repeated in HCC patients after treatment with transcatheter arterial chemoembolization (TACE). The recovery of phenacetin’s urinary metabolites was studies in 12 normal subjects and 14 patients with HCC. Results: Compared with normal controls, the recovery of phenacetin O‐de‐ethylated metabolites decreased by 42·5% (P < 0·01) in patients with HCC and diminished further after TACE (P < 0·05). The ratio of plasma total paracetamol to phenacetin was much lower than in normal controls (P < 0·01) and was reduced by 40·7% more after TACE (P < 0·05). Conclusions: The metabolism of phenacetin is impaired in patient with HCC. TACE damages the activity of CYP1A2. The phenacetin test can be used to predict effect of TACE on liver function in HCC patients.     

SLO1B1和CYP2C9联合突变对那格列奈降血糖效果的影响

目的:研究SLO1B1 521TC变异以及SLO181 521TC和CYP2C9·3的联合突变对口服降糖药那格列奈的降血糖效果的影响.方法:对48名健康志愿者(12例SLCO181 521TT/CYP2C9·1基因型,14例SLCO1B1 521 TT/CYP2C9·3基因型,12例SLCO1B1 521TC/CC/CYP2C9·1基因型,10例SLCO1B1521TC/CYP2C9·3基因型)单次口服120 mg那格列奈,分别在给药前和给药后0.25、0.5、0.75、1、1.5、2、3、4、6、8 h采血,用自动生化分析仪进行血糖浓度分析.结果:单一的SLO181 521TC多态和CYP2C9·3多态对于那格列奈的降血糖效果与野生型对照组比较差异无显著性.联合突变组在最大血糖升高值,0～4 h和0～8 h的血糖浓度平均变化值与野生型组比较差异无显著性,但是在最大血糖降低值与野生型对照组和SLO1B1 521TC突变组比较差异有显著性意义(P=0.027,P=0.048).结论:在健康受试者,单一及联合的SLO1B1和CYP2C9多态性对那格列奈降血糖效果没有显著影响:但是在2型糖尿病患者中,有关影响需要进一步的研究.     

Genetic polymorphisms of drug-metabolizing enzymes CYP2D6, CYP2C9, CYP2C19 and CYP3A5 in the Greek population

The aim of the present study was to determine the prevalence of the most common allelic variants of the polymorphic cytochrome P450 (CYP) enzymes CYP2D6, CYP2C9, CYP2C19 and CYP3A5 and to predict the genotype frequency for each polymorphism in the Greek population. DNA isolated from peripheral blood samples derived from 283 non-related Greek ethnic subjects was used to determine the frequency of CYP2D6*3, CYP2D6*4, CYP2C9*2, CYP2C9*3 and CYP3A5*3 allelic variants by the polymerase chain reaction (PCR)-restriction fragment length polymorphism method, CYP2C19*2 and CYP2C19*3 with allelic specific amplification (PCR-ASA), and CYP2D6*2 (gene duplications) by long PCR analysis. The allelic frequencies (out of a total of 566 alleles) for CYP2D6*3 and CYP2D6*4, were 2.3% and 17.8%, respectively, while gene duplications (CYP2D6*2) were found in 7.4% of the subjects tested. For CYP2C9*2 and CYP2C9*3 polymorphisms the allelic frequencies were 12.9% and 8.13% respectively. For CYP2C19, the *2 polymorphism was present at an allelic frequency of 13.1%, while no subjects were found carrying the CYP2C19*3 allele. Finally, the CYP3A5*3 allele was abundantly present in the Greek population with an allelic frequency of 94.4%. Overall our results show that the frequencies of the common defective allelic variants of CYP2C9, CYP2C19 and CYP3A5 in Greek subjects are similar to those reported for several other Caucasian populations. Finally, a high prevalence of CYP2D6 gene duplication among Greeks was found, a finding that strengthens the idea that a South/North gradient exists in the occurrence of CYP2D6 ultrarapid metabolizers in European populations.     

CYP17A1基因多态性与原发性高血压的相关性研究

目的探讨CYP17A1基因rs11191548位点多态性与原发性高血压关系。方法选取原发性高血压患者143例和健康体检者199例。应用Taq Man探针分析CYP17A1基因rs11191548位点多态性的基因型,并探讨其相关性,采用逐步Logistic回归分析,分析获得性因素对高血压的影响。结果经χ~2检验,2组间基因型分布差异有统计学意义(P0.05),2组间等位基因频率分布差异有统计学意义(P0.05)。TT和CT基因型较CC基因型对于患病具有较高风险,CC基因型的个体患高血压的风险分别是携带TT基因型的0.370倍,携带T等位基因的个体患高血压的风险是携带C等位基因的1.776倍。获得性因素中,空腹血糖、甘油三酯及年龄较高的人群具有更高的患病风险。结论 CYP17A1基因rs11191548多态性与原发性高血压发病可能相关,其中TT基因型及T等位基因的个体患高血压的风险升高,获得性因素对高血压的发病有显著影响。     

Pharmacogenetics of acenocoumarol: CYP2C9, CYP2C19, CYP1A2, CYP3A4, CYP3A5 and ABCB1 gene polymorphisms and dose requirements

BACKGROUND AND OBJECTIVE: Acenocoumarol (AC) is a coumarin derivative, vitamin K antagonist anticoagulant drug. It has a narrow therapeutic index and shows large pharmacokinetic and pharmacodynamic interindividual variability. Our objective was to investigate the association between AC dose requirements to achieve a target level of anticoagulation and genetic polymorphisms of genes possibly associated with its metabolism (CYP1A2, CYP2C9, CYP2C19, CYP3A4, CYP3A5) and transport (ABCB1). METHODS: Ninety-six Bulgarian patients treated orally with AC for at least 3 months were included. They were separated into three groups according to their AC dose requirement, i.e. low, medium and high. RESULTS AND DISCUSSION: CYP2C9*1/*3 (associated with an intermediate CYP2C9 activity), CYP2C9*2/*2, and CYP2C9*2/*3 genotypes (associated with a low CYP2C9 activity) were more prevalent in the group with low dose requirement of AC compared with the other two groups (P = 0.003). The frequency of CYP2C9*1/*1 genotype, which is associated with an extensive CYP2C9 activity, was higher in the group of patients with high dose requirements (79%), compared with the groups of the medium and low dose requirements (67% and 21% respectively). In addition, the ABCB1 2677GG/3435CC haplotype was associated with use of lower AC dose, whereas the 2677TT/3435TT and 2677GT/3435TT haplotypes were associated with use of higher AC dose (P = 0.03). The distribution of polymorphisms of other genes did not show significant differences between the three groups. CONCLUSION: In vivo, cytochromes P450 isoforms other than CYP2C9 [corrected] were not significantly associated with dose requirement of AC. In our Bulgarian patients, the presence of CYP2C9*2 or/and CYP2C9*3 alleles, as well as the ABCB1 2677GG/3435CC haplotype were associated with low dose requirement of AC.     

Two novel methods for the determination of CYP1A2 activity using the paraxanthine/caffeine ratio

Cytochrome P450 1A2 (CYP1A2) plays an important role in drug metabolism. Provocation with caffeine is used to estimate CYP1A2 activity, but in most tests a long period of caffeine abstinence has to be taken into account. We compared two novel methods with the currently applied test. The pharmacokinetic (PK) parameters of caffeine and paraxanthine were estimated in eight caffeine-taking healthy volunteers by fitting serum concentration-time data to a two-compartment PK model. Then a three-step approach was followed. Step 1: The caffeine administration regimens of three provocation methods, which differ by their periods of abstinence, together with the PK parameters of each volunteer, were entered in a PK simulation program and the molecular ratio of the paraxanthine/caffeine concentration (P/C molratio) of each method was estimated for the individual volunteers. Step 2: For each method a relationship for the population between the caffeine clearance (Clc) and the corresponding P/C molratio was empirically established. Step 3: The true caffeine clearance (Clc tr) of each volunteer, as found by fitting the individual PK curve, was compared for all three methods with the clearance estimated from the individual P/C molratio using the relationship of step 2. The predictive values for Clc of the three methods did not differ significantly from Clc tr. For the three methods the values for bias were 6.7, 4.3 and 3.1%, respectively and for precision they were 12.3, 20.6 and 17.8%. We conclude that the two novel methods of caffeine provocation show good predictive performance for Clc when compared with the conventional method. Abstaining from caffeine for a long period is not necessary to estimate CYP1A2 activity (using the P/C molratio) accurately.     

EMILIN1 CYP11B2基因多态性与原发性高血压相关性研究

目的 研究 EMILIN1、CYP11B2基因多态性与原发性高血压的相关性。方法 回顾性分析该院2010年3月至2012年3月期间收治的100例原发性高血压患者,将其作为临床研究对象（患者组）,另选取血压正常的健康自愿者100例作为健康对照组,进行基因多态性的对比研究。采用聚合酶链反应-限制性片段长度多态性（PCR-RFLP）方法 分别检测两组EMILIN1基因SNP位点和CYP11B2基因SNP位点的等位基因及基因型分布情况。结果 患者组患者EMILIN1基因rs2304682位点上的基因型与等位基因频率与健康对照组比较,差异有统计学意义（P＜0．05）,患者组CG基因型、G等位基因频率明显高于健康对照组,而CC基因型、C等位基因频率则比健康对照组低;CYP11B2基因多态性基因型及等位基因频率发现,患者组（CYP11B2）-344 T/C基因多态性中TT基因型、T基因频率明显高于健康对照组,而CT 基因型、C基因频率则低于健康对照组,差异均有统计学意义（P＜0．05）。结论 EMILIN1基因多态性可能与原发性高血压有一定的相关性,（CYP11B2）-344T/C位点上等位基因T的频率较高。