Sphere-forming tumor cells possess stem-like properties in human fibrosarcoma primary tumors and cell lines

被引:22
作者
Liu, Wei-Dong [1 ]
Zhang, Tao [1 ]
Wang, Chun-Lei [1 ]
Meng, Hong-Mei [1 ]
Song, Yu-Wen [1 ]
Zhao, Zhe [1 ]
Li, Zheng-Min [2 ]
Liu, Jiang-Kun [1 ]
Pan, Shang-Ha [3 ]
Wang, Wen-Bo [1 ]
机构
[1] Harbin Med Univ, Affiliated Hosp 1, Dept Orthoped, Harbin 150001, Peoples R China
[2] Harbin Med Univ, Affiliated Tumor Hosp, Dept Orthoped, Harbin 150001, Peoples R China
[3] Harbin Med Univ, Affiliated Hosp 1, Cent Lab, Harbin 150001, Peoples R China
关键词
human fibrosarcoma; cancer stem cell; drug resistance; aggressiveness; tumorigenicity; BRAIN-TUMORS; IDENTIFICATION; EXPRESSION; SARCOMAS; TARGET; BREAST;
D O I
10.3892/ol.2012.940
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Fibrosarcoma is a malignant soft tissue tumor of mesenchymal origin. Despite advances in medical and surgical treatment, patient survival rates have remained poor. According to the cancer stem cell hypothesis, tumors are comprised of heterogeneous cell populations that have different roles in tumor formation and growth. Cancer stem cells are a small cell subpopulation that exhibits stem-like properties to gain aggressiveness and recurrence. These cells have been identified in a variety of cancerous tumors, but not in human fibrosarcoma. In this study, we observed that HT1080 cells and primary fibrosarcoma cells formed spheres and showed higher self-renewal capacity, invasiveness and drug resistance compared with their adherent counterparts. Moreover, we demonstrated that the cells showed higher expression of the embryonic stem cell-related genes Nanog, Oct3/4, Sox2, Sox10 and their encoding proteins, as well as greater tumorigenic capacity in nude mice. In conclusion, our data suggest the presence of a stem-like cell population in human fibrosarcoma tumors, which provides more evidence for the cancer stem cell hypothesis and assistance in designing new therapeutic strategies against human fibrosarcoma.
引用
收藏
页码:1315 / 1320
页数:6
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