Expression of CD133 in clear cell renal cell carcinoma cells and the related drug resistance
10.3724/SP.J.1008.2009.00252
- Author:
Yu-Jia ZHAI
1
Author Information
1. Qingdao Branch
- Publication Type:Journal Article
- Keywords:
5-fluorouracil;
CD133;
Interferon;
Kidney neoplasms;
Tumor stem cells
- From:
Academic Journal of Second Military Medical University
2010;30(3):252-255
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To observe the expression of CD133 in the clear cell renal cell carcinoma (RCC) and to investigate the related drug resistance. Methods: Flow cytometry and immunohistochemical method were used to examine the expression of CD133 in metastatic RCC cell line RCC05-TXJ, low metastatic RCC cell line RCC05-ZYJ and two clinical non-metastatic RCC primary cultures isolated from a male and a female patient. The four cell lines were treated with IFN-α and 5-FU and the viability of cells were examined by MTT assay before and after treatment. Results: Flow cytometry showed that RCC05-TXJ and RCC05-ZYJ expressed CD133. The in situ carcinomas of male and female patients hardly expressed CD133. Immunohistochemistry examination showed that the local membrane of RCC05-TXJ and RCC05-ZYJ cells expressed CD133. RCC cells of female and male patients hardly expressed CD133. RCC05-TXJ and RCC05-ZYJ cells exposed to IFN-α or 5-FU showed a rebound of survival 24 h after withdrawal of drugs. The survival rates of RCC cells of male and female patients kept at a low level after withdrawal of drugs. Conclusion: There are a small number of CD133+ RCC cells in RCC patients, with a property similar to tumor stem cells, which might be one of the important factors influencing the immunotherapy and chemotherapy of tumors.
