Regulatory Functions of the Differentiated Epidermis

摘要 表皮形成了通往外部世界的基本屏障。要做到这一点，它包括 增殖性干细胞，补充组织，产生分化细胞，形成 功能障碍。我们发现，表皮的分化细胞在 在调节其亲代干细胞的行为方面发挥作用，使它们不仅是 干细胞只是它们监管利基的一部分。此外，差异化的机械状态 细胞，即它们的收缩能力，是表皮干细胞多个方面的强大输入 行为，包括增殖、迁移和细胞命运的决定。在这里，我们试图定义 分化的表皮细胞通过机械和化学途径控制这两种 干细胞行为和皮肤生理学。通过以下方式定义利基组件和机制 它们对表皮干细胞行为的影响对于干细胞的操纵是必不可少的 用于再生疗法和/或治疗由干细胞失调引起的疾病。

Abstract The epidermis forms an essential barrier to the outside world. To accomplish this, it contains proliferative stem cells that replenish the tissue, giving rise to differentiated cells that form a functional barrier. We have found that the differentiated cells of the epidermis play an important role in regulating the behavior of their parental stem cells, making them not only descents of the stem cells but part of their regulatory niche. Moreover, the mechanical status of differentiated cells, namely their contractility, is a strong input into multiple aspects of epidermal stem cell behavior, including proliferation, migration, and cell fate decisions. Here we seek to define the pathways, both mechanical and chemical, by which differentiated epidermal cells control both stem cell behavior and skin physiology. Defining the niche components and the mechanisms by which they influence epidermal stem cell behavior is essential to allow manipulation of stem cells for regenerative therapies and/or treatment of diseases that result from stem cell dysregulation.