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- W3171237296 abstract "为了研究绵羊Musclin对糖代谢和胰岛素作用的影响,本试验运用生物信息学软件对其结构特征进行预测,并构建绵羊Musclin基因真核表达载体。分4组对绵羊胎儿成肌细胞进行处理:空载体组(pcDNA3.1)、Musclin过表达组(pcDNA3.1-Musclin)、空载体+胰岛素组(pcDNA3.1+Insulin)、Musclin过表达+胰岛素组(pcDNA3.1-Musclin+Insulin)。然后分别在分化48和72 h时收集细胞,检测Musclin对正常或添加胰岛素培养的分化状态绵羊肌细胞糖代谢的影响,并利用荧光定量PCR检测相关基因表达的变化。酶切鉴定和测序结果表明,成功构建了表达载体pcDNA3.1-Musclin。生物信息学分析表明,绵羊Musclin蛋白含有一个信号肽,并在28氨基酸位点处存在一个酶切位点。亚细胞定位在胞外,属于分泌蛋白。其二级和三级结构以α螺旋和无规则卷曲为主。细胞试验表明,绵羊Musclin基因过表达明显减少了正常或胰岛素处理的绵羊肌细胞糖原含量并增加了培养液中葡萄糖含量。诱导分化72 h时,过表达Musclin抑制了Musclin过表达组和Musclin过表达+胰岛素组绵羊肌细胞中IRS1、AKT1、AKT2、GLUT1、GLUT4基因mRNA表达,并促进了GSK3β mRNA表达;而诱导分化48 h时,只有GLUT4基因的表达受到抑制。综上所述,绵羊Musclin基因过表达可以影响肌细胞糖代谢并减弱胰岛素的作用,二者相互协调以维持糖代谢稳态。其作用机制涉及到上述相关基因的表达变化,且与绵羊成肌细胞的分化状态有关。" @default.
- W3171237296 created "2021-06-22" @default.
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- W3171237296 date "2021-03-23" @default.
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- W3171237296 title "绵羊 Musclin 基因真核表达载体的构建及其对肌细胞糖代谢和胰岛素作用的影响" @default.
- W3171237296 doi "https://doi.org/10.11843/j.issn.0366-6964.2021.03.008" @default.
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