目的：采用实时荧光定量聚合酶链式反应（polymerase chain reaction，PCR）技术，研究P2X受体在大鼠神经胶质瘤和嗜铬细胞瘤及原代培养皮层神经元和星形胶质细胞上的表达差异。方法：取新生1-2 d SD大鼠大脑皮层，分离纯化神经元和星...目的：采用实时荧光定量聚合酶链式反应（polymerase chain reaction，PCR）技术，研究P2X受体在大鼠神经胶质瘤和嗜铬细胞瘤及原代培养皮层神经元和星形胶质细胞上的表达差异。方法：取新生1-2 d SD大鼠大脑皮层，分离纯化神经元和星形胶质细胞，并采用实时荧光定量PCR技术，比较P2X受体在大鼠胶质瘤C6细胞、大鼠肾上腺嗜铬细胞瘤PC-12细胞、星形胶质细胞和皮层神经元上的表达差异。结果：C6细胞P2X2、P2X3和P2X5表达水平显著高于星形胶质细胞，P2X4、P2X6和P2X7表达水平显著低于星形胶质细胞，PC-12细胞P2X1、P2X2、P2X3和P2X6表达水平显著高于皮层神经元，P2X5和P2X7表达水平则显著低于皮层神经元。此外，还发现P2X2、P2X5和P2X6在C6和PC-12细胞上的表达水平存在显著差异。结论：大鼠胶质瘤和嗜铬细胞瘤细胞表达多种P2X受体，且与原代培养细胞存在表达差异，提示核苷酸介导的信号传递系统可能作为潜在的肿瘤治疗靶点。展开更多
The nucleotide sequences in exon 7 of a disintegrin and metalloproteinase with thrombospondin motifs-1(ADAMTS-1)gene in Landrace pig were obtained with cloning and sequencing by using PCR-RFLP technique in this experi...The nucleotide sequences in exon 7 of a disintegrin and metalloproteinase with thrombospondin motifs-1(ADAMTS-1)gene in Landrace pig were obtained with cloning and sequencing by using PCR-RFLP technique in this experiment.Sequence alignment results showed that the C/G substitution in exon 7 induced amino acid change(Arg → Pro).AA,BB and AB genotypes were found in Landrace pig by PvuⅡ-RFLP.Correlation analysis between genotypes and reproductive traits indicated that ADAMTS-1 was significantly correlated with litter size(LS)and number born alive(NBA).展开更多
文摘目的：采用实时荧光定量聚合酶链式反应（polymerase chain reaction，PCR）技术，研究P2X受体在大鼠神经胶质瘤和嗜铬细胞瘤及原代培养皮层神经元和星形胶质细胞上的表达差异。方法：取新生1-2 d SD大鼠大脑皮层，分离纯化神经元和星形胶质细胞，并采用实时荧光定量PCR技术，比较P2X受体在大鼠胶质瘤C6细胞、大鼠肾上腺嗜铬细胞瘤PC-12细胞、星形胶质细胞和皮层神经元上的表达差异。结果：C6细胞P2X2、P2X3和P2X5表达水平显著高于星形胶质细胞，P2X4、P2X6和P2X7表达水平显著低于星形胶质细胞，PC-12细胞P2X1、P2X2、P2X3和P2X6表达水平显著高于皮层神经元，P2X5和P2X7表达水平则显著低于皮层神经元。此外，还发现P2X2、P2X5和P2X6在C6和PC-12细胞上的表达水平存在显著差异。结论：大鼠胶质瘤和嗜铬细胞瘤细胞表达多种P2X受体，且与原代培养细胞存在表达差异，提示核苷酸介导的信号传递系统可能作为潜在的肿瘤治疗靶点。
文摘The nucleotide sequences in exon 7 of a disintegrin and metalloproteinase with thrombospondin motifs-1(ADAMTS-1)gene in Landrace pig were obtained with cloning and sequencing by using PCR-RFLP technique in this experiment.Sequence alignment results showed that the C/G substitution in exon 7 induced amino acid change(Arg → Pro).AA,BB and AB genotypes were found in Landrace pig by PvuⅡ-RFLP.Correlation analysis between genotypes and reproductive traits indicated that ADAMTS-1 was significantly correlated with litter size(LS)and number born alive(NBA).
