Effect of macrophages on pancreatic cancer.
2018
324Background: Pancreatic Ductal Adenocarcinoma (PDAC) is expected to be the second leading cause of cancer related deaths by 2030. TGF-β is a well-studied PDAC mediator with a context dependent role as initially a tumor suppressor with potential to convert to a tumor promoter in later stages. Tumor associated macrophages and interleukins, such as the pro-inflammatory interleukin, IL23, are not well studied regarding PDAC. We hypothesized PDAC treated with TGF-β and macrophages would induce a more aggressive phenotype. Methods: We investigated aggressive behavior with a primary PDAC cell line in vivo and a metastatic PDAC cell line in vitro. A primary pancreatic cell line, Panc-1 cells, were pre-treated with PBS, IL23, macrophages (10:1 ratio of Panc-1 cells to macrophages), IL23 + macrophages, TGF-s, TGF-s + macrophages, or TGF-s + macrophages + IL23. After treatment, cells were orthotopically implanted into the pancreas of NOD SCID gamma mice with 5 mice per group. Mice weights were recorded twice weekl...
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