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  • Title: Characterization of a renal cell carcinoma cell line derived from a human bone metastasis and establishment of an experimental nude mouse model.
    Author: Weber KL, Pathak S, Multani AS, Price JE.
    Journal: J Urol; 2002 Aug; 168(2):774-9. PubMed ID: 12131367.
    Abstract:
    PURPOSE: We provide the necessary tools to study the biology of bone metastasis using renal cell carcinoma as a model. A relevant renal cell carcinoma cell line developed from a human bone metastasis is described and an experimental model in the nude mouse was established. MATERIALS AND METHODS: The novel cell line RBM1 was developed from bone metastasis from a patient with renal cell carcinoma. In vitro methods used to study the cell line included karyotype analysis, reverse-transcriptase polymerase chain reaction, ribonuclease protection assay and Western blot analysis. An intratibial injection model in the nude mouse resulted in bone lesions similar to those in human patients. RESULTS: Chromosomal analysis of this cell line revealed characteristic cytogenetic abnormalities common in renal cell carcinoma. RBM1 cells expressed parathyroid hormone parathyroid hormone related peptide, interleukin-6 and macrophage colony-stimulating factor, which are cytokines involved in osteoclast activation and subsequent bone resorption. Western blot analysis revealed the presence of high levels of epidermal growth factor receptor and c-MET. Reproducible osteolytic lesions developed in the nude mouse after injecting 1 x 106 cells into the tibia. CONCLUSIONS: This cell line and animal model may allow further study of the biology and mechanism of renal cell carcinoma bone metastasis.
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