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首页> 外文期刊>Cell and Tissue Research >Localization of TFF3 peptide in human esophageal submucosal glands and gastric cardia: differentiation of two types of gastric pit cells along the rostro-caudal axis
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Localization of TFF3 peptide in human esophageal submucosal glands and gastric cardia: differentiation of two types of gastric pit cells along the rostro-caudal axis

机译:TFF3肽在人食管粘膜下腺和胃card门中的定位:沿肩axis尾轴分化两种类型的胃凹细胞

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摘要

TFF3 (trefoil factor family 3), which is a major secretory product of the gastric antrum and the intestine, but which is nearly absent in the gastric corpus, plays a key role in the maintenance of mucosal integrity. Here, we have systematically investigated TFF3 expression in the esophagus and gastric cardia by the use of reverse transcription/polymerase chain reaction (RT-PCR) analysis and immunohistochemistry. Synthesis of TFF3, but not TFF1 or TFF2, is detectable in esophageal submucosal glands. The stratified squamous epithelium is devoid of TFF synthesis. Prominent TFF3 expression starts at the Z-line with a sharply decreasing gradient toward the cardia. Immunohistochemistry has localized TFF3 to surface mucous cells of the proximal cardia. TFF3 distribution differs characteristically from that of TFF1 (secreted primarily by superficial surface mucous cells), whereas TFF3, together with the mucin MUC5AC, is also found in deeper lying cells toward the isthmus. This is the first report of TFF3 as a typical secretory peptide of esophageal submucosal glands and gastric cardia. The different expression patterns of TFF3 and TFF1 in the cardia suggest a stepwise maturation of surface mucous cells from TFF3/MUC5AC-positive cells close to the isthmus to TFF1/TFF3/MUC5AC-positive cells at the pit. The gradient of TFF3 expression along the gastric rostro-caudal axis defines two types of gastric pit cells: those secreting TFF3 in the cardia and the antrum and those nearly devoid of TFF3 synthesis in the corpus. This indicates the special requirement, particularly of the esophagogastric junction, for TFF3-triggered protection and repair.
机译:TFF3(三叶因子家族3)是胃窦和肠的主要分泌产物,但在胃体中几乎不存在,在维持粘膜完整性中起着关键作用。在这里,我们已经通过使用逆转录/聚合酶链反应(RT-PCR)分析和免疫组化系统研究了TFF3在食道和胃ia门的表达。在食管粘膜下腺中可检测到TFF3的合成,但未检测到TFF1或TFF2的合成。分层的鳞状上皮缺乏TFF合成。突出的TFF3表达从Z线开始,向with门的梯度急剧下降。免疫组织化学已将TFF3定位于近端card门的表面粘膜细胞。 TFF3的分布特征不同于TFF1(主要由表层粘液分泌),而TFF3与粘蛋白MUC5AC一起也位于较深的朝向峡部的细胞中。这是TFF3作为食管粘膜下腺和胃card门的典型分泌肽的首次报道。 FF门中TFF3和TFF1的不同表达方式表明,表面粘液从接近峡部的TFF3 / MUC5AC阳性细胞逐步成熟到凹坑处的TFF1 / TFF3 / MUC5AC阳性细胞。 TFF3在胃尾尾轴上的表达梯度定义了两种类型的胃凹细胞:在the门和胃窦分泌TFF3的细胞以及在胃体几乎没有TFF3合成的细胞。这表明对TFF3触发的保护和修复有特殊要求,尤其是食管胃交界处。

著录项

  • 来源
    《Cell and Tissue Research》 |2007年第2期|365-374|共10页
  • 作者单位

    Institut für Molekularbiologie und Medizinische Chemie Universitätsklinikum Otto-von-Guericke-Universität Magdeburg Leipziger Strasse 44 39120 Magdeburg Germany;

    Institut für Pathologie Otto-von-Guericke-Universität Magdeburg 39120 Magdeburg Germany;

    Klinik für Gastroenterologie Hepatologie und Infektiologie Otto-von-Guericke-Universität Magdeburg 39120 Magdeburg Germany;

    Klinik für Gastroenterologie Hepatologie und Infektiologie Otto-von-Guericke-Universität Magdeburg 39120 Magdeburg Germany;

    Medizinisch-Naturwissenschaftliches Forschungszentrum Eberhard-Karls-Universität Tübingen 72074 Tübingen Germany;

    Institut für Pathologie Otto-von-Guericke-Universität Magdeburg 39120 Magdeburg Germany;

    Klinik für Chirurgie Otto-von-Guericke-Universität Magdeburg 39120 Magdeburg Germany;

    Institut für Pathologie Otto-von-Guericke-Universität Magdeburg 39120 Magdeburg Germany;

    Klinik für Gastroenterologie Hepatologie und Infektiologie Otto-von-Guericke-Universität Magdeburg 39120 Magdeburg Germany;

    Klinik für Chirurgie Otto-von-Guericke-Universität Magdeburg 39120 Magdeburg Germany;

    Institut für Molekularbiologie und Medizinische Chemie Universitätsklinikum Otto-von-Guericke-Universität Magdeburg Leipziger Strasse 44 39120 Magdeburg Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    TFF domain; Trefoil; Intestinal trefoil factor; Esophagus; Cardia; Gastric restitution; Stomach; Human;

    机译:TFF域;三叶;肠三叶因子;食道;Card门;胃复原;胃;人;

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