皮肤癌干细胞的维持依赖于β-catenin信号传递
Ilaria Malanchi1, Hector Peinado, Deepika Kassen
1Ecole Polytechnique Fédérale de Lausanne/ISREC (Swiss Institute for Experimental Cancer Research) and National Center of Competence in Research Molecular Oncology, Chemin des Boveresses 155, 1066 Epalinges, Switzerland.
Nature
|April 4, 2008
概括
癌症干细胞 (CSCs) 通过采用干细胞特性来驱动瘤生长. 准β-catenin信号传递,对于CSC干性至关重要,但不是正常的皮肤,消除了状细胞癌.
科学领域:
- 干细胞生物学 干细胞生物学
- 癌症研究 癌症研究
- 皮肤病学 皮肤病学
背景情况:
- 表皮组织依赖干细胞进行自我更新.
- 癌症干细胞 (CSCs) 通过模仿干细胞特性来维持上皮瘤.
- 对于大多数瘤来说,CSCs的起源和调节在很大程度上仍未确定.
研究的目的:
- 为了确定表皮瘤中CSCs的细胞起源.
- 阐明监管途径,这对于CSC的发展至关重要.
- 探索针对状细胞癌中CSC的治疗策略.
主要方法:
- 在早期的小鼠表皮瘤中鉴定CD34+细胞群,具有类似干细胞的特性.
- 功能性检测包括移植,以评估瘤启动能力.
- 基因废除β-catenin信号,以评估其在CSC维护中的作用.
- 在人类状细胞癌中对β-catenin信号的分析.
主要成果:
- 在早期表皮瘤中,一个独特的细胞群体在表型和功能上类似于正常的皮肤干细胞.
- 这种群体含有CSCs,负责瘤启动和维持层次组织.
- β-catenin信号传递对于维持CSC表型至关重要;其切除导致CSC损失和瘤回归.
- 升高的β-catenin信号传递与人类状细胞癌有关.
结论:
- 表皮瘤中的CSC与正常皮肤干细胞有相似之处.
- 在CSC维护中,β-catenin信号是不可或缺的.
- 针对Wnt/β-catenin通路提供了一种潜在的策略,通过专门消除CSC来根除平细胞癌,因为它对正常的表皮平衡不至关重要.
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