Pancreas cancer is the fourth leading cause of cancer death due to the limited treatment success rate. The wide
number of signalling pathway aberrations contributing to tumorigenesis, progression and drug resistance, is the main
reason for unsuccessful treatments in pancreatic cancer. An additional and still under-investigated intracellular cancer
target is the peroxisome proliferator activated receptor gamma (PPAR-γ). Several studies have shown the in vitro
antitumor activity of PPAR-γ agonists in cancer cells but, if used in monotherapy, they were poorly effective in cancer
treatment. The present review will focus on the potential therapeutic role of PPAR-γ agonists in combination with other
drugs (type I interferons, gemcitabine and COX-2 inhibitors), highlighting molecular interactions and signalling pathways
involved in pancreatic cancer cells. Understanding of the underlying molecular mechanisms and survival pathways
activated in cancer cells should promote the development of more successful strategies based on the specific targeting of
molecular pathways involved in the resistance to anti-cancer agents.
Keywords: Cancer therapy, COX-2 inhibitors, gemcitabine, interferon-β, pancreatic cancer, PPAR-γ, thiazolodinediones.
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