Group items tagged

It was concluded that omega-3 fatty acid could inhibit the proliferation of pancreatic cancer cell line SW1990 cells and promote their apoptosis. The down-regulation of the cyclin E expression by omega-3 fatty acid might be one of the mechanisms for its anti-tumor effect on pancreatic cancer. \n\nModulatory effects of EPA and DHA on proliferation and apoptosis of pancreatic cancer cells.\nZhang W, Long Y, Zhang J, Wang C.\nJ Huazhong Univ Sci Technolog Med Sci. 2007 Oct;27(5):547-50.\nPMID: 18060632

The precise mechanism of the anti-tumor effect of imiquimod in BCC is not known. It has been postulated that ultraviolet radiation induces mutations in the tumor-suppressor genes and alters the immuno-surveillance, so that tumor cells escape from cytotoxic T cells and apoptosis.[1] Th-2 cytokines, that downregulate tumor surveillance, are raised in BCC.[1],[5] Imiquimod acts on toll-like receptor-7 (TLR-7) present on dendritic cells, macrophages and monocytes and induces expression of interferons, Th-1 cytokines (IL-1, IL-6, IL-10 and IL-12), tumor necrosis factor-a and G-CSF, thereby counteracting Th2 cytokines and promoting tumor surveillance.[1],[5] It also enhances the activity of natural killer cells and epidermal Langerhans' cells. The tumor regression is achieved probably by induction of Fas receptors on the tumor cells resulting in their apoptosis.[10]

Anticancer properties of oxidation products of docosahexaenoic acid.\nSiddiqui RA, Harvey K, Stillwell W.\nChem Phys Lipids. 2008 May;153(1):47-56. Epub 2008 Feb 23. Review.\nPMID: 18343223