AnnexinⅡ在已分化人表皮角质形成细胞中表达的研究

Study on annexinⅡ expression in differentiation of human epidermal keratinocyte

目的探讨annexinⅡ在已分化人表皮角质形成细胞(keratinocyte,KC)中的表达。方法采用免疫组织化学(immunoh istochem istry,IHC)技术检测早、中、晚期人胚胎表皮KC及成人表皮KC中annexinⅡ蛋白的表达。结果①annexinⅡ在人胚胎期表皮KC中的表达随胚胎的发育逐渐增强,在成人期表皮KC中的表达明显高于胚胎期。②annexinⅡ呈胞膜方式表达,主要分布于基底上层的分化KC中。结论annexinⅡ可能参与表皮KC分化的调控。

Objective To explore the annexin Ⅱ expression in the differentiation of human epidermal keratinocytes. Methods Immunohistochemistry was used to detect annexin Ⅱ expression in early, middle, late human embryonic skin and adult skin, respectively. Results The expression of annexin Ⅱ in embryonic epidermis was significantly increased with the development of embryo and annexin Ⅱ expressed much higher in adult epidermis than in embryonic epidermis. Annexin Ⅱ localized in the membrane of keratinocyte, mainly in suprabasal, the more differentiated layers of the epidermis. Conclusion Annexin Ⅱ may be involved in regulating the differentiation of human epidermal keratinocytes.