首页> 外文期刊>Life sciences >Keratinocyte acetylcholine receptors regulate cell adhesion.
【24h】

Keratinocyte acetylcholine receptors regulate cell adhesion.

机译:角质形成细胞的乙酰胆碱受体调节细胞粘附。

获取原文
获取原文并翻译 | 示例
           

摘要

We investigated the mechanism mediating cholinergic control of cell-to-cell adhesion of human epidermal keratinocytes (KC) by non-neuronal acetylcholine produced by KC themselves. We first measured cholinergic effects on the expression of desmoglein (Dsg) 1 and 3 in KC using the semi-quantitative immunofluorescence and Western blot assays. Monolayers of KC were treated overnight with 0.25 mM of the cholinergic agonist carbachol (CCh) or the acetylcholinesterase inhibitor pyridostigmine bromide (PBr). Both CCh and PBr increased the relative amounts of Dsg 1 and Dsg 3. To determine the role for cholinergic receptor-mediated phosphorylation of Dsg molecules in assembly/disassembly of keratinocyte desmosomes, we tested the effects of a cholinergic antagonist on keratinocyte adhesion and Dsg phosphorylation status in DJM-1 cell line. Atropine (Atr), 0.02 mM, induced rapid detachment of cells from each other (acantholysis), and also increased phosphorylation of Dsg 3 by 33%. The Atr-dependent phosphorylationof Dsg 3 was inhibited in the presence of 0.5 mM CCh. Thus, keratinocyte cholinergic receptors regulate desmosomal adhesion of KC by altering the level of expression of both Dsg 1 and Dsg 3 and the phosphorylation status of Dsg 3.
机译:我们调查了由KC自身产生的非神经元乙酰胆碱介导胆碱能控制人表皮角质形成细胞(KC)的细胞间粘附的机制。我们首先使用半定量免疫荧光法和Western印迹法测量了胆碱能对KC中desmoglein(Dsg)1和3的表达的影响。用0.25 mM胆碱能激动剂卡巴胆碱(CCh)或乙酰胆碱酯酶抑制剂溴化斯的明溴化物(PBr)处理KC单层过夜。 CCh和PBr均增加了Dsg 1和Dsg 3的相对含量。为了确定胆碱能受体介导的Dsg分子在角化细胞桥粒组装/拆卸中的作用,我们测试了胆碱能拮抗剂对角质形成细胞粘附和Dsg磷酸化的影响。 DJM-1细胞系中的状态。 0.02 mM的阿托品(Atr)诱导细胞彼此快速分离(棘皮分解术),并使Dsg 3的磷酸化增加33%。在0.5 mM CCh的存在下,Dsg 3的Atr依赖性磷酸化受到抑制。因此,角质形成细胞胆碱能受体通过改变Dsg 1和Dsg 3的表达水平以及Dsg 3的磷酸化状态来调节KC的桥粒粘附。

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