LeRoy BE, Thudi NK, Nadella MVP, Toribio RE, Tannehill-Gregg SH, van Bokhoven A, Davis D, Corn S, Rosol TJ. New bone formation and osteolysis by a metastatic, highly invasive canine prostate carcinoma xenograft.
Prostate 2006;
66:1213-22. [PMID:
16683269 DOI:
10.1002/pros.20408]
[Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND
Osteoblastic metastases are commonly induced by prostate cancer. A canine prostate carcinoma xenograft (Ace-1) was developed and used to evaluate neoplastic prostate cell growth, metastasis, and effects on bone formation in nude mice.
METHODS
Characteristics of the Ace-1 cells were evaluated with histopathology, radiography, and bioluminescent imaging (BLI). Immunohistochemistry and quantitative RT-PCR were used to evaluate the expression of factors important in the development of osteoblastic metastases.
RESULTS
The Ace-1 cells were invasive and induced bone formation and destruction. Radiographs demonstrated a mixed osteoblastic/osteolytic reaction. Lung and lymph node metastases occurred in 30% of mice. The tumor cells expressed parathyroid hormone-related protein (PTHrP-141 isoform), cathepsin K, keratins 8/18, and vimentin, but not keratins 5/14, and were androgen receptor negative. Intracardiac (IC) injections resulted in metastases in vertebrae and long bones.
CONCLUSIONS
The Ace-1 xenograft is a useful model for investigating the pathogenesis of prostate cancer invasion and mixed osteoblastic/osteolytic bone metastases.
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