微粒体谷胱甘肽S-转移酶1(microsomal glutathione S-transferase 1,MGST1)是谷胱甘肽S-转移酶(glutathione S-transferase,GST)超家族和花生四烯酸与谷胱甘肽代谢中的膜相关蛋白(membrane-associated proteins in eicosanoid and gluta...微粒体谷胱甘肽S-转移酶1(microsomal glutathione S-transferase 1,MGST1)是谷胱甘肽S-转移酶(glutathione S-transferase,GST)超家族和花生四烯酸与谷胱甘肽代谢中的膜相关蛋白(membrane-associated proteins in eicosanoid and glutathione metabolism,MAPEG)超家族的共同成员,它通过催化外源性物质的II相解毒过程,从而保护细胞膜免受氧化应激的损伤。众多研究发现MGST1与恶性肿瘤的发生发展密切相关,有望成为癌症治疗的新型分子靶点。本文就MGST1在恶性肿瘤中的研究进展予以综述。展开更多
Several recent studies have demonstrated the possible involvement of the microsomal glutathione S-transferase 2 (MGST2) gene in the pathogenesis of psoriasis. The objectives of this work are to determine whether the g...Several recent studies have demonstrated the possible involvement of the microsomal glutathione S-transferase 2 (MGST2) gene in the pathogenesis of psoriasis. The objectives of this work are to determine whether the genetic polymorphisms of the MGST2 gene were associated with an increased risk of psoriasis in Chinese patients. We first characterized the linkage disequilibrium pattern within MGST2 and identified single-nucleotide polymorphisms (SNPs) for tagging common genetic variants. Genotype-and haplotype-based analyses were then performed by genotyping the Tag SNPs in a large-scale sample of cases and controls. We characterized the linkage disequilibrium pattern within MGST2 using 12 densely distributed SNPs and identified 6 SNPs for tagging common genetic variants. We then performed an association analysis by genotyping the six SNPs in 552 cases and 384 controls, but none of the genotype-and haplotype-based analyses revealed significant evidence for association. We also performed family-based association analysis by genotyping the six SNPs in 95 trios; no evidence for association was identified. Our comprehensive genetic analysis of MGST2 common variants in a large Chinese sample of psoriasis did not provide any supporting evidence for MGST2 to be the susceptibility gene within the PSORS9 locus.展开更多
目的用二代转录组测序(RNA-seq)技术,结合差异基因GO分析、KEGG富集分析,探讨谷胱甘肽转移酶(GST)在高脂饮食诱导的小鼠非酒精性脂肪性肝病(NAFLD)中的作用。方法14只雄性C57BL/6J小鼠随机抽样分为对照组(n=6)和模型组(n=8)。对照组小...目的用二代转录组测序(RNA-seq)技术,结合差异基因GO分析、KEGG富集分析,探讨谷胱甘肽转移酶(GST)在高脂饮食诱导的小鼠非酒精性脂肪性肝病(NAFLD)中的作用。方法14只雄性C57BL/6J小鼠随机抽样分为对照组(n=6)和模型组(n=8)。对照组小鼠喂养普通饲料;模型组喂养高脂饲料,连续7周,构建NAFLD模型。试剂盒检测血清ALT、AST活性及TG水平、苏木精-伊红(HE)和油红染色观察肝组织病理和脂滴沉积情况;提取肝组织RNA进行高通量转录组测序,将基因表达量差异倍数≥2.0且P<0.05定义为差异基因,筛选对照组与模型组肝组织差异基因,应用GO、KEGG数据库进行功能分析,并采用qRT-PCR验证差异基因表达。符合正态分布的计量资料两组比较采用独立样本t检验。结果对照组与模型组小鼠体质量、血清ALT、AST差异无统计学意义(P值均>0.05)。与对照组相比,模型组血清TG水平明显高于对照组[(2.02±0.50)mmol/L vs(1.00±0.29)mmol/L,t=-4.45,P=0.001]。HE染色提示:模型组可见弥漫性脂肪变性和气球样变。油红染色显示:模型组肝细胞胞浆内橘红色脂滴明显增多,且肝细胞脂肪变分级明显高于对照组(1.88±0.64 vs 1.00±0.00,t=-3.86,P=0.006)。转录组测序提示两组差异基因1367个,其中上调基因数608个、下调基因数759个;且两组中GST基因差异表达17个。选择差异倍数最明显的前10个GST基因进行验证。与对照组相比,GSTa2、GSTa3、GSTa4、GSTm1、GSTm2、GSTm3、GSTm4、GSTp1、GSTo1表达下调,GSTk1表达上调。实验结果与测序结果一致。结论GST通过参与类固醇代谢过程、脂肪酸代谢过程、胆固醇代谢过程等多个生物学过程影响脂质代谢,与NAFLD发病密切相关。展开更多
文摘Several recent studies have demonstrated the possible involvement of the microsomal glutathione S-transferase 2 (MGST2) gene in the pathogenesis of psoriasis. The objectives of this work are to determine whether the genetic polymorphisms of the MGST2 gene were associated with an increased risk of psoriasis in Chinese patients. We first characterized the linkage disequilibrium pattern within MGST2 and identified single-nucleotide polymorphisms (SNPs) for tagging common genetic variants. Genotype-and haplotype-based analyses were then performed by genotyping the Tag SNPs in a large-scale sample of cases and controls. We characterized the linkage disequilibrium pattern within MGST2 using 12 densely distributed SNPs and identified 6 SNPs for tagging common genetic variants. We then performed an association analysis by genotyping the six SNPs in 552 cases and 384 controls, but none of the genotype-and haplotype-based analyses revealed significant evidence for association. We also performed family-based association analysis by genotyping the six SNPs in 95 trios; no evidence for association was identified. Our comprehensive genetic analysis of MGST2 common variants in a large Chinese sample of psoriasis did not provide any supporting evidence for MGST2 to be the susceptibility gene within the PSORS9 locus.
文摘目的用二代转录组测序(RNA-seq)技术,结合差异基因GO分析、KEGG富集分析,探讨谷胱甘肽转移酶(GST)在高脂饮食诱导的小鼠非酒精性脂肪性肝病(NAFLD)中的作用。方法14只雄性C57BL/6J小鼠随机抽样分为对照组(n=6)和模型组(n=8)。对照组小鼠喂养普通饲料;模型组喂养高脂饲料,连续7周,构建NAFLD模型。试剂盒检测血清ALT、AST活性及TG水平、苏木精-伊红(HE)和油红染色观察肝组织病理和脂滴沉积情况;提取肝组织RNA进行高通量转录组测序,将基因表达量差异倍数≥2.0且P<0.05定义为差异基因,筛选对照组与模型组肝组织差异基因,应用GO、KEGG数据库进行功能分析,并采用qRT-PCR验证差异基因表达。符合正态分布的计量资料两组比较采用独立样本t检验。结果对照组与模型组小鼠体质量、血清ALT、AST差异无统计学意义(P值均>0.05)。与对照组相比,模型组血清TG水平明显高于对照组[(2.02±0.50)mmol/L vs(1.00±0.29)mmol/L,t=-4.45,P=0.001]。HE染色提示:模型组可见弥漫性脂肪变性和气球样变。油红染色显示:模型组肝细胞胞浆内橘红色脂滴明显增多,且肝细胞脂肪变分级明显高于对照组(1.88±0.64 vs 1.00±0.00,t=-3.86,P=0.006)。转录组测序提示两组差异基因1367个,其中上调基因数608个、下调基因数759个;且两组中GST基因差异表达17个。选择差异倍数最明显的前10个GST基因进行验证。与对照组相比,GSTa2、GSTa3、GSTa4、GSTm1、GSTm2、GSTm3、GSTm4、GSTp1、GSTo1表达下调,GSTk1表达上调。实验结果与测序结果一致。结论GST通过参与类固醇代谢过程、脂肪酸代谢过程、胆固醇代谢过程等多个生物学过程影响脂质代谢,与NAFLD发病密切相关。
