Recombinant thrombomodulin suppresses tumor growth of pancreatic cancer by blocking thrombin-induced PAR1 and NF-κB activation
2017
Background Thrombomodulin, an anticoagulant that inhibits thrombin-induced growth factor promotion, also has an anti-inflammatory effect. Furthermore, thrombomodulin inhibits nuclear factor-kappa B activation, which plays a crucial role in cancer progression. We assessed the antitumor activity of recombinant thrombomodulin for pancreatic cancer. Methods A xenograft orthotopic model was established in mice by implantation of human pancreatic cancer cells. The animals were treated with intraperitoneal injection of recombinant thrombomodulin 5 times a week for 4 weeks. Nuclear factor-kappa B activation was evaluated by measuring nuclear localization of the p65. Efficacy of recombinant thrombomodulin on the signal transduction of nuclear factor-kappa B was measured in vitro under preconditioning with thrombin or epidermal growth factor. Results Tumor growth was suppressed by recombinant thrombomodulin ( P P P P P P P Conclusion Recombinant thrombomodulin significantly suppressed tumor growth against human pancreatic cancer by blocking thrombin-induced nuclear factor-kappa B activation without adverse effects.
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