期刊
SCANDINAVIAN JOURNAL OF CLINICAL & LABORATORY INVESTIGATION
卷 69, 期 1, 页码 151-155出版社
TAYLOR & FRANCIS AS
DOI: 10.1080/00365510802460466
关键词
Co-culture; DU145; FACS; LNCaP; metastases; osteoblasts; PC3; prostate cancer; RANKL
资金
- Swedish Cancer Society
- Lundberg Foundation
- Hedlund Foundation
- King Gustav V Jubilee Foundation
The molecular mediators of bone remodelling, receptor activator of nuclear factor-kappaB ligand (RANKL), receptor activator of nuclear factor-kappaB (RANK) and osteoprotegerine (OPG), are believed to be involved in the cellular mechanisms by which tumours metastasize to bone. RANKL is a potent stimulator of osteoclastic bone resorption and is expressed in a variety of tumour cells. We have investigated if the membrane bound form of RANKL is expressed in prostate cancer cell lines, and whether this expression might be regulated by the presence of human osteoblasts. Three prostate cancer cell lines were co-cultured with human osteoblast-like cells (hOB) and RANKL expression on cell surface was measured by FACS. We found basal expression of RANKL on the cell surface, and in co-culture with hOBs the number of cells expressing RANKL was increased between 2.5 and 4 times. These data suggest a signalling mechanism between bone cells and prostate cancer cells that might increase bone resorption and thereby promote bone metastases.
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