Background：H syndrome （OMIM 612391） is a recently described autosomal recessive genodermatosis characterized by indurated hyperpigmented and hypertrichotic skin,as well as other systemic manifestations.Most of the ...Background：H syndrome （OMIM 612391） is a recently described autosomal recessive genodermatosis characterized by indurated hyperpigmented and hypertrichotic skin,as well as other systemic manifestations.Most of the cases occurred in the Middle East areas or nearby countries such as Spain or India.The syndrome is caused by mutations in solute carrier family 29,member 3 （SLC29A3）,the gene encoding equilibrative nucleoside transporter 3.The aim of this study was to identify pathogenic SLC29A 3 mutations in a Chinese patient clinically diagnosed with H syndrome.Methods：Peripheral blood samples were collected from the patient and his parents.Genomic DNA was isolated by the standard method.All six SLC29A3 exons and their flanking intronic sequences were polymerase chain reaction （PCR）-amplified and the PCR products were subjected to direct sequencing.Results：The patient,an 18-year-old man born to a nonconsanguineous Chinese couple,had more extensive cutaneous lesions,involving both buttocks and knee.In his genomic DNA,we identified a novel homozygous insertion-deletion,c.1269_1270delinsA,in SLC29A3.Both of his parents were carriers of the mutation.Conclusions：We have identified a pathogenic mutation in a Chinese patient with H syndrome.展开更多
目的探究外周血白细胞溶质载体家族45成员4(solute carrier family 45 member 4,SLC45A4)和α血红蛋白稳定蛋白(αhemoglobin stabilizing protein,AHSP)基因甲基化与乳腺癌发病的关系。方法通过差异甲基化分析等方法在GSE51032、GSE104...目的探究外周血白细胞溶质载体家族45成员4(solute carrier family 45 member 4,SLC45A4)和α血红蛋白稳定蛋白(αhemoglobin stabilizing protein,AHSP)基因甲基化与乳腺癌发病的关系。方法通过差异甲基化分析等方法在GSE51032、GSE104942和GSE89093数据集中筛选与乳腺癌发病潜在相关的基因。采用病例对照研究,纳入545例乳腺癌患者和524例非乳腺癌对照作为研究对象。使用MethylTarget靶向测序检测目标基因甲基化并分析其与乳腺癌的关系。结果本研究共筛选出4个基因,控制混杂因素后,SLC45A4和AHSP高甲基化与乳腺癌关系的ORadj分别为0.218(95%CI:0.158~0.299)和0.535(95%CI:0.384~0.741)。在不同亚组中SLC45A4高甲基化与乳腺癌的关联仍有统计学意义,ORadj最高为0.427(95%CI:0.270~0.679),最低为0.153(95%CI:0.085~0.274),而AHSP高甲基化仅在管腔A型(Luminal A)、管腔B型(Luminal B)、雌激素受体阳性(estrogen receptor+,ER+)和≤60岁年龄组中与乳腺癌的关联有统计学意义。异质核糖核酸蛋白C(heterogeneous nuclear ribonucleoproteins C,HNRNPC)甲基化与乳腺癌的关系与公共数据结果相反,ORadj为0.747(95%CI:0.569~0.980),锌指蛋白425(zinc finger protein 425,ZNF425)甲基化与乳腺癌的关联无统计学意义(P=0.158)。结论外周血白细胞SLC45A4和AHSP基因高甲基化可能是乳腺癌发病的保护因素。展开更多
目的:探讨溶质载体家族22成员14(SLC22A14)和精子相关抗原6(SPAG6),在特发性弱精子症患者精子中的表达情况。方法:收集精子库合格捐精者(正常对照组)和特发性弱精子症患者(弱精子症组)各50例精子样本,采用非连续密度梯度离心纯化精子,...目的:探讨溶质载体家族22成员14(SLC22A14)和精子相关抗原6(SPAG6),在特发性弱精子症患者精子中的表达情况。方法:收集精子库合格捐精者(正常对照组)和特发性弱精子症患者(弱精子症组)各50例精子样本,采用非连续密度梯度离心纯化精子,分别用RT-PCR和Western印迹检测SLC22A14、SPAG6 mRNA及蛋白的表达。结果:RT-PCR检测结果显示,弱精子症组的SLC22A14、SPAG6 mRNA表达均显著低于正常对照组(SLC22A14:0.53±0.10 vs 0.77±0.08,t=12.834,P<0.01;SPAG6:0.52±0.10 vs 0.77±0.06,t=13.755,P<0.01),Western印迹检测结果显示,弱精子症组的SLC22A14和SPAG6蛋白表达量同样均显著低于正常对照组,分别为(SLC22A14:0.55±0.10 vs 0.80±0.09,t=12.884,P<0.01;SPAG6:0.56±0.09 vs 0.78±0.09,t=12.257,P<0.01)。结论:在特发性弱精子症患者中SLC22A14和SPAG6表达降低可能是导致弱精子症的重要原因之一。展开更多
膜相关转运蛋白Slc45a2(solute carrier family 45 member 2)调节黑素体中的p H值,进而调节酪氨酸酶活性,在黑色素生成中发挥重要作用。小眼畸形转录因子(microphthalmia-associated transcription factor,MITF)已被证实是Slc45a2的调...膜相关转运蛋白Slc45a2(solute carrier family 45 member 2)调节黑素体中的p H值,进而调节酪氨酸酶活性,在黑色素生成中发挥重要作用。小眼畸形转录因子(microphthalmia-associated transcription factor,MITF)已被证实是Slc45a2的调节因子,然而其调控机制仍待研究。该研究旨在探讨Slc45a2在不同毛色小鼠皮肤是否存在差异表达,以及与毛色形成是否存在相关性。QRTPCR检测显示,Slc45a2在不同毛色小鼠皮肤样品中均有表达,在棕色和灰色小鼠皮肤中Slc45a2的表达量是黑色小鼠皮肤的6.29倍(P<0.01)和1.18倍(P<0.05);Western印迹结果显示,在棕色和灰色小鼠皮肤中Slc45a2蛋白表达量是黑色小鼠皮肤的1.44(P<0.01)和1.03倍;免疫组织化学结果表明,Slc45a2在不同毛色皮肤毛囊的毛基质、内外毛根鞘、毛乳头等区域均有表达。为了进一步了解Slc45a2在黑色素细胞色素沉着的重要作用,将Slc45a2转染到小鼠黑色素细胞并测定黑色素含量,同时检测色素沉着相关基因的表达水平。结果表明,转染Slc45a2与空载组相比黑色素含量明显增加。此外,MITF、TYR、TYRP1和TYRP2蛋白水平分别升高1.31倍、1.37倍、1.63倍和2.21倍,差异显著(P<0.05);TYRP2蛋白显著升高2.47倍(P<0.01)。MITF mRNA显著升高1.64(P<0.05);TYR和TYRP1 mRNA显著升高2.96倍(P<0.01)和8.85倍(P<0.01);TYRP2 mRNA表达量变化不明显。Slc45a2在不同毛色小鼠皮肤中均可有效表达,且差异显著。Slc45a2过量表达,使色素沉着相关基因的表达量及黑色素含量增加。由此表明,Slc45a2通过调控色素的生成,进而影响毛色的形成。展开更多
溶质载体家族7成员11(solute carrier family 7 member 11,SLC7A11/xCT)作为一种胱氨酸/谷氨酸逆向转运蛋白,参与氨基酸在质膜上的转运,调节细胞铁死亡的发生机制。近年来,越来越多的研究表明,SLC7A11与心血管系统疾病的发生、发展密切...溶质载体家族7成员11(solute carrier family 7 member 11,SLC7A11/xCT)作为一种胱氨酸/谷氨酸逆向转运蛋白,参与氨基酸在质膜上的转运,调节细胞铁死亡的发生机制。近年来,越来越多的研究表明,SLC7A11与心血管系统疾病的发生、发展密切相关。本文综述了SLC7A11的结构、功能、调控机制及其在心血管疾病发展中的作用机理,旨在寻找与心血管疾病防治相关的潜在靶点。展开更多
文摘Background：H syndrome （OMIM 612391） is a recently described autosomal recessive genodermatosis characterized by indurated hyperpigmented and hypertrichotic skin,as well as other systemic manifestations.Most of the cases occurred in the Middle East areas or nearby countries such as Spain or India.The syndrome is caused by mutations in solute carrier family 29,member 3 （SLC29A3）,the gene encoding equilibrative nucleoside transporter 3.The aim of this study was to identify pathogenic SLC29A 3 mutations in a Chinese patient clinically diagnosed with H syndrome.Methods：Peripheral blood samples were collected from the patient and his parents.Genomic DNA was isolated by the standard method.All six SLC29A3 exons and their flanking intronic sequences were polymerase chain reaction （PCR）-amplified and the PCR products were subjected to direct sequencing.Results：The patient,an 18-year-old man born to a nonconsanguineous Chinese couple,had more extensive cutaneous lesions,involving both buttocks and knee.In his genomic DNA,we identified a novel homozygous insertion-deletion,c.1269_1270delinsA,in SLC29A3.Both of his parents were carriers of the mutation.Conclusions：We have identified a pathogenic mutation in a Chinese patient with H syndrome.
文摘目的:探讨溶质载体家族22成员14(SLC22A14)和精子相关抗原6(SPAG6),在特发性弱精子症患者精子中的表达情况。方法:收集精子库合格捐精者(正常对照组)和特发性弱精子症患者(弱精子症组)各50例精子样本,采用非连续密度梯度离心纯化精子,分别用RT-PCR和Western印迹检测SLC22A14、SPAG6 mRNA及蛋白的表达。结果:RT-PCR检测结果显示,弱精子症组的SLC22A14、SPAG6 mRNA表达均显著低于正常对照组(SLC22A14:0.53±0.10 vs 0.77±0.08,t=12.834,P<0.01;SPAG6:0.52±0.10 vs 0.77±0.06,t=13.755,P<0.01),Western印迹检测结果显示,弱精子症组的SLC22A14和SPAG6蛋白表达量同样均显著低于正常对照组,分别为(SLC22A14:0.55±0.10 vs 0.80±0.09,t=12.884,P<0.01;SPAG6:0.56±0.09 vs 0.78±0.09,t=12.257,P<0.01)。结论:在特发性弱精子症患者中SLC22A14和SPAG6表达降低可能是导致弱精子症的重要原因之一。
文摘溶质载体家族7成员11(solute carrier family 7 member 11,SLC7A11/xCT)作为一种胱氨酸/谷氨酸逆向转运蛋白,参与氨基酸在质膜上的转运,调节细胞铁死亡的发生机制。近年来,越来越多的研究表明,SLC7A11与心血管系统疾病的发生、发展密切相关。本文综述了SLC7A11的结构、功能、调控机制及其在心血管疾病发展中的作用机理,旨在寻找与心血管疾病防治相关的潜在靶点。
