bowel motility

肠动力
  • 文章类型: Journal Article
    先天性巨结肠(HSCR)是一种常见的先天性缺陷。在妊娠的头三个月中,当神经c衍生的肠神经系统(ENS)前体的肠定植不完全时,就会发生这种情况。先前已经研究了几种候选细胞的再生ENS的能力,包括源自天然肠的肠神经c干细胞(En-NCSC)或从人多能干细胞(hPSC)模拟的那些。然而,尚不清楚除En-NCSC以外的天然NCSC是否具有再生功能性肠神经元并在肠环境下产生神经元依赖性运动的潜力。本研究旨在确定迁移前的NCSC(pNCSC)作为一种非肠NCSC,可以形成肠神经元并介导运动。首先将pNCSC移植到成年小鼠的结肠中,并被发现存活下来,migrate,分化为肠神经元,并成功整合到成年小鼠结肠中。当pNCSC和人类肠道类器官的混合物被植入裸鼠的肾下囊并生长到成熟的组织工程肠(TEI)时,pNCSC衍生的神经元介导TEI的神经元依赖性蠕动。这些结果表明,先前假定不是由肠环境或线索诱导的pNCSC可以支配肠并建立神经元依赖性运动。用于ENS再生的未来候选细胞可包括非肠NCSC。
    Hirschsprung\'s disease (HSCR) is a common congenital defect. It occurs when bowel colonization by neural crest-derived enteric nervous system (ENS) precursors is incomplete during the first trimester of pregnancy. Several sources of candidate cells have been previously studied for their capacity to regenerate the ENS, including enteric neural crest stem cells (En-NCSCs) derived from native intestine or those simulated from human pluripotent stem cells (hPSCs). However, it is not yet known whether the native NCSCs other than En-NCSCs would have the potential of regenerating functional enteric neurons and producing neuron dependent motility under the intestinal environment. The present study was designed to determine whether premigratory NCSCs (pNCSCs), as a type of the nonenteric NCSCs, could form enteric neurons and mediate the motility. pNCSCs were firstly transplanted into the colon of adult mice, and were found to survive, migrate, differentiate into enteric neurons, and successfully integrate into the adult mouse colon. When the mixture of pNCSCs and human intestinal organoids was implanted into the subrenal capsule of nude mice and grown into the mature tissue-engineered intestine (TEI), the pNCSCs-derived neurons mediated neuron-dependent peristalsis of TEI. These results show that the pNCSCs that were previously assumed to not be induced by intestinal environment or cues can innervate the intestine and establish neuron-dependent motility. Future cell candidates for ENS regeneration may include nonenteric NCSCs.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

       PDF(Pubmed)

公众号