华西口腔医学杂志

• 基础研究 • 上一篇    下一篇

p75神经营养蛋白受体阳性舌鳞状细胞癌细胞的生物学特性研究

佟冬冬1,2 张风河1,2 姚瑶3 张兆弢1,2 王进兵1,2 李青1,2 张新莲1,2   

  1. 1.山东大学口腔医院口腔颌面外科;2.山东省口腔生物医学重点实验室,济南 250012;3.安徽省第二人民医院口腔科,合肥 230022
  • 出版日期:2014-02-01 发布日期:2014-02-01
  • 通讯作者: 张风河,教授,博士,E-mail:zfengh@sdu.edu.cn
  • 作者简介:佟冬冬,住院医师,硕士, E-mail:13176448231@sina.com

Study of the biological characteristics of p75 neurotrophin receptor positive tongue squamous cell carcinoma cells

Tong Dongdong1,2, Zhang Fenghe1,2, Yao Yao3, Zhang Zhaotao1,2, Wang Jinbing1,2, Li Qing1,2, Zhang Xinlian1,2   

  1. 1. Dept. of Oral and Maxillofacial Surgery, Stomatology Hospital of Shandong University, Jinan 250012, China;2. Shandong Provincial Key Labo-ratory of Oral Biomedicine, Jinan 250012, China; 3. Dept. of Stomatology, Anhui No.2 Provincial People’s Hospital, Anhui 230022, China
  • Online:2014-02-01 Published:2014-02-01

摘要:

目的 对流式细胞仪分选获得的p75神经营养蛋白受体(p75NTR)阳性舌鳞状细胞癌细胞进行生物学特性研究。方法 通过流式细胞术检测舌鳞状细胞癌细胞系Tca-8113和Cal-27中p75NTR阳性细胞的表达。对流式细胞仪分选获取的 p75NTR阳性细胞进行单克隆培养、四甲基偶氮唑盐比色法及划痕实验检测,以未分选细胞为对照,分析 p75NTR阳性细胞的生物学特性。结果 舌鳞状细胞癌细胞株Tca-8113、Cal-27中,p75NTR阳性细胞的比例分别为3.1%和1.9%。与未分选的细胞相比,p75NTR阳性细胞的单克隆形成能力更高( Tca-8113细胞, P=0.024;Cal-27细胞,P=0.009);单克隆 p75NTR阳性细胞再培养 2周后, p75NTR阳性细胞率分别降为14.5%(Tca-8113)和5.8%(Cal-27);p75NTR阳性细胞体外增殖能力显著增强,且具有明显的侵袭迁移能力。结论 p75NTR阳性舌鳞状细胞癌细胞具有肿瘤干细胞的特性。

关键词: 舌鳞状细胞癌, 肿瘤干细胞, p75神经营养蛋白受体

Abstract:

Objective To study the biological characteristics of p75 neurotrophin receptor positive (p75NTR+) tongue squa-mous cell carcinoma cells which were separated by flow cytometry cell sorting. Methods To determine the biological cha-racteristics of p75NTR+ cells which were separated from Tca-8113 and Cal-27 tongue squamous cell carcinoma cells by flow cytometry cell sorting, including study the capacity of cloning, 3-(4,5)-demethylthiazo(z-y1)-3,5-diphenytetrazoliumromide (MTT) assay, wound healing assay. p75NTR+ cells with non-sorted cells were as control group. Results In Tca-8ll3 and Cal-27 tongue squamous cell carcinoma cell lines, the percentage of p75NTR+ cells were 3.1% and 1.9%. Compared with p75NTR+ cells with non-sorted cells, p75NTR+ cells possess higher capacity of cloning (Tca-8113, P=0.024; Cal-27, P=0.009). The per-centage of p75NTR+cells of the progeny cells generated from monoclonal p75NTR+ cells decreased to 14.5% (Tca-8113) and 5.8% (Cal-27) after cultured two weeks. p75NTR+ cells possessed higher proliferation ability and higher metastasis ability than non-sorted cells. Conclusion p75NTR+ cells isolated from tongue squamous cell carcinoma have the characteristics of cancer stem cells.

Key words: tongue squamous cell carcinoma, cancer stem cells, p75 neurotrophin receptor