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人类皮肤 Meissner 和 Pacinian 小体中巢蛋白阳性细胞的证据。

Evidence of nestin-positive cells in the human cutaneus Meissner and Pacinian corpuscles.

机构信息

Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, C/ Julian Claveria 6, Planta 9, Oviedo, Spain. .

出版信息

CNS Neurol Disord Drug Targets. 2012 Nov 1;11(7):869-77. doi: 10.2174/1871527311201070869.

Abstract

Nestin is an intermediate filament protein expressed in neuroepithelial stem cells during development and it is later replaced by cell specific neuronal or glial filaments. Nevertheless, nestin⁺ cells remain within adult tissues and they can be regarded as potential neural stem cell (NSC). Nestin⁺ cells have been detected in Schwann cells related with sensory corpuscles of rodent and they have been demonstrated to be NSC. We have investigated the existence of nestin⁺ in human cutaneous cells Meissner and Pacinian corpuscles through the use of immunohistochemistry techniques and in situ hybridization. S100 protein (also regarded as a marker for NSC) and vimentin (the intermediate filament of mature Schwann cells in sensory corpuscles) were also investigated. The results show that the adult human cutaneous sensory Meissner and Pacinian corpuscles contains a small population of Schwann-related cells (vimentin⁺) which on the basis of their basic immunohistochemical characteristics (S100 protein⁺, nestin⁺) can be potential NSCs. Cells sharing identical immunohistochemical profile were also found in the close vicinity of Meissner corpuscles. Because their localization they are easily accessible and may represent a peripheral niche of NSC to be used for therapeutic goals.

摘要

巢蛋白是一种中间丝蛋白,在发育过程中表达于神经上皮干细胞,随后被特定的神经元或神经胶质丝取代。然而,巢蛋白+细胞仍然存在于成人组织中,它们可以被视为潜在的神经干细胞(NSC)。巢蛋白+细胞已在与啮齿动物感觉小体相关的施万细胞中被检测到,并且已被证明是 NSC。我们通过免疫组织化学技术和原位杂交技术研究了人皮肤细胞 Meissner 和 Pacinian 小体中巢蛋白+的存在。还研究了 S100 蛋白(也被认为是 NSC 的标志物)和波形蛋白(感觉小体中成熟施万细胞的中间丝)。结果表明,成人皮肤感觉 Meissner 和 Pacinian 小体包含一小群 Schwann 相关细胞(波形蛋白+),根据其基本免疫组织化学特征(S100 蛋白+、巢蛋白+),它们可以是潜在的 NSC。在 Meissner 小体附近也发现了具有相同免疫组织化学特征的细胞。由于它们的定位,它们很容易接近,并且可能代表用于治疗目的的 NSC 的外周生态位。

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