Abstract
Cyclooxygenase-2 (COX-2) is overexpressed in colon tumors. Its main product is the immunosuppressive prostaglandin PGE2 that aids tumor immune escape. In this study, we analyzed mechanisms of action of the COX-2 inhibitor rofecoxib on the immune response to colorectal cancer in an animal model. The murine colorectal cancer cell line MC26, and splenocytes from BALB/c mice immune to irradiated MC26 cells, were incubated with rofecoxib or PGE2. In MC26 cells, 100 nM rofecoxib caused a complete abrogation of PGE2 production and inhibited cell proliferation. Splenocytes from tumor immune mice showed a 300% (P
Original language | English |
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Pages (from-to) | 614-623 |
Number of pages | 10 |
Journal | Journal of Immunotherapy |
Volume | 30 |
Issue number | 6 |
DOIs | |
Publication status | Published - Sep 2007 |
Keywords
- Animals
- Cell Line, Tumor
- Cell Proliferation
- Chemokines
- Colorectal Neoplasms
- Cyclooxygenase 2
- Cyclooxygenase 2 Inhibitors
- Dinoprostone
- Female
- Gene Expression
- Lactones
- Mice
- Mice, Inbred BALB C
- Monocytes
- Spleen
- Sulfones