首页> 外文期刊>Islets >The redundant role of JAK2 in regulating pancreatic β-cell mass
【24h】

The redundant role of JAK2 in regulating pancreatic β-cell mass

机译:JAK2在调节胰腺β细胞质量中的冗余作用

获取原文
获取原文并翻译 | 示例
           

摘要

Janus kinase (JAK) 2 is a non-receptor tyrosine kinase that mediates the downstream effects of various growth factors, including growth hormone, 1 prolactin, 2 placental lactogen 3 and erythropoietin (EPO). 4 EPO is a hematopoietic growth factor that is largely known for its role in promoting proliferation, differentiation and survival of cells in the erythroid lineage. Global loss of the EPO receptor (EPO-R) has been shown to be embryonically lethal in mice due to anemia attributed to defects in erythropoiesis. 5 Interestingly, mice with global deficiency of JAK2 share a similar developmental phenotype as the EPO-R knockout mice, 6 demonstrating that JAK2 is essential in eliciting the biological effects of EPO, particularly in erythrocytosis. Recent studies from our group have shown that exogenous EPO protects mice against diabetes through direct effects on pancreatic β-cells, and these protective effects are dependent on the presence of JAK2 in the β-cells. 7 Here, we briefly highlight the cytoprotective effects of exogenous EPO in the pancreatic β-cells, as well as our new findings on the redundant role of JAK2 in β-cell expansion after high-fat feeding in mice.
机译:Janus激酶(JAK)2是一种非受体酪氨酸激酶,可介导各种生长因子的下游效应,包括生长激素,1种催乳激素,2种胎盘催乳素3和促红细胞生成素(EPO)。 4 EPO是造血生长因子,因其在促进类红细胞谱系中细胞的增殖,分化和存活中的作用而广为人知。 EPO受体(EPO-R)的整体丧失已被证明是由于红细胞生成缺陷导致的贫血,在小鼠中具有胚胎致死性。 5有趣的是,具有JAK2整体缺陷的小鼠具有与EPO-R基因敲除小鼠相似的发育表型,6证明JAK2在引起EPO的生物学效应(特别是在红细胞增多症)中至关重要。我们小组的最新研究表明,外源性EPO通过对胰腺β细胞的直接作用来保护小鼠免于糖尿病,这些保护作用取决于β细胞中JAK2的存在。 7在这里,我们简要强调了外源性EPO对胰腺β细胞的细胞保护作用,以及我们对高脂喂养小鼠后JAK2在β细胞扩增中的冗余作用的新发现。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号