Up-regulation of the expression of activins in the pancreatic duct by reduction of the beta-cell mass.

Up-regulation of the expression of activins in the pancreatic duct by reduction of the beta-cell mass.
复制标题

通过减少β细胞量上调胰管中激活素的表达。

DOI:
10.1210/en.2002-220089
复制
发表时间:
2002
期刊:
影响因子:
4.8
通讯作者:
I. Kojima
I. Kojima
中科院分区:
医学2区
文献类型:
--
作者:
You;Hui Zhang;A. Maeshima;H. Kurihara;J. Miyagawa;T. Takeuchi;I. Kojima

文献摘要

参考文献

被引文献

相似文献

胰腺祖细胞中表达的激活素在发育过程中调节内分泌细胞的分化。在某些条件下,成年动物体内会发生β细胞的新生,并且β细胞被认为是由位于胰管中的前体细胞产生的。在本研究中,我们研究了激活素是否在β细胞新生开始的导管中表达。 β(A) 和 β(B) 亚基的 mRNA 在离体小鼠胰管中表达。免疫组织化学检测显示,在胰管中检测到了 β(A) 亚基,并与细胞角蛋白(导管细胞的标记物)共定位。 β(A)-亚基也在导管中的巢蛋白阳性细胞中表达。同样,在胰管中也检测到了 β(B) 亚基。此外,II型和IIB型激活素受体的mRNA在导管中表达。注射链脲佐菌素后,两个激活素亚基的 mRNA 表达显着增加。同样,部分胰腺切除术后 mRNA 表达上调。这些结果表明激活素在胰管中表达,并在β细胞质量减少后不久上调。导管中激活素的诱导可能是β细胞新生启动的关键步骤。
Activins expressed in progenitor cells of the pancreas regulate differentiation of endocrine cells during development. Neogenesis of beta-cells takes place in adult animals under some conditions, and beta-cells are thought to arise from precursors locating in the pancreatic duct. In the present study, we investigated whether or not activins are expressed in the duct where beta-cell neogenesis is initiated. mRNA for the beta(A)- and beta(B)-subunits was expressed in isolated mouse pancreatic ducts. Immunohistochemically, the beta(A)-subunit was detected in the pancreatic duct and colocalized with cytokeratin, a marker of ductal cells. The beta(A)-subunit was also expressed in nestin-positive cells in the duct. Likewise, the beta(B)-subunit was detected in the pancreatic duct. In addition, mRNA for the type II and type IIB activin receptors was expressed in the duct. Expression of mRNA for two activin subunits was markedly increased after streptozotocin injection. Similarly, the mRNA expression was up-regulated after partial pancreatectomy. These results indicate that activins are expressed in the pancreatic duct and are up-regulated shortly after the reduction of the beta-cell mass. Induction of activins in the duct may be a critical step in the initiation of beta-cell neogenesis.
DOI: 10.2337/diabetes.49.2.163
发表时间: 2000-02-01
期刊: DIABETES
影响因子: 7.7
作者:
Jensen, J;Heller, RS;Serup, P
通讯作者: Serup, P
DOI: 10.2337/diabetes.50.3.521
发表时间: 2001-03-01
期刊: DIABETES
影响因子: 7.7
作者:
Zulewski, H;Abraham, EJ;Habener, JF
通讯作者: Habener, JF
再生胰腺中的移行细胞。
DOI: 10.1242/dev.120.7.1873
发表时间: 1994
期刊: Development (Cambridge, England)
影响因子: --
作者:
Gu,D;Lee,MS;Krahl,T;Sarvetnick,N
通讯作者: Sarvetnick,N
导管-胰岛细胞轴的营养刺激:治疗糖尿病的新方法。
DOI: 10.1007/978-1-4615-3448-8_11
发表时间: 1992
影响因子: --
作者:
Rosenberg,L;Vinik,AI
通讯作者: Vinik,AI
IFN-g 转基因小鼠的上皮细胞增殖和胰岛新生。
DOI: 10.1242/dev.118.1.33
发表时间: 1993
期刊: Development (Cambridge, England)
影响因子: --
作者:
Gu,D;Sarvetnick,N
通讯作者: Sarvetnick,N