Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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Outline of Final Research Achievements |
In the human pancreatic cancer cells which showed resistance to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL), as an anticancer drug, I investigated to restore the sensitivity to TRAIL and elucidate its cellular mechanisms. Pifithrin-mu, an inhibitor of autophagy or ABT-263, a Bcl-2 family inhibitor which targets Bcl-2, Bcl-xL, and Bcl-w significantly enhanced the sensitivity to TRAIL in human pancreatic cancer cells. Knockdown of HIF-2alpha, but not HIF-1alpha, using siRNA increased the susceptibility of pancreatic cancer cells to TRAIL via decreased the expression of anti-apoptotic protein survivin, and induced antitumor effects. These results suggest that inhibition of HIF-2alpha, autophagy, or anti-apoptotic molecules can enhance the efficacy of immune therapies to cancers.
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