| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
It was revealed that HDM2 was the ubiquitin ligase which regulated the ubiquitination of integrin beta 8 by binding to EGF-like repeat domains in integrin beta 8 subunit leg. Treatment of oral squamous cell carcinoma cells with HDM2 E3 ligase inhibitor led to the enhancement of expression of integrin beta 8 protein. In addition, the enhancement of expression of HDM2 protein promoted cell motility of oral squamous cell carcinoma cells. These findings indicated that HDM2 might tightlyregulate the degradation of integrin beta 8 protein by ubiquitin-proteasome system, and participate in regulation of invasion and metastasis of oral cancer. Therefore, it is expected that molecular targeted therapy targeting HDM2 ubiquitin ligase has the potential to be the novel therapy for oral squamous cell carcinoma.
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