| Project/Area Number |
23592707
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Morphological basic dentistry
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| Research Institution | Kyushu Dental College |
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Principal Investigator |
MATSUO Kou 九州歯科大学, 歯学部, 准教授 (70238971)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
JIMI Eijiro 九州歯科大学, 歯学部, 教授 (40276598)
|
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| Co-Investigator(Renkei-kenkyūsha) |
AOKI Kazuhiro 東京医科歯科大学, 大学院医歯学総合研究科, 准教授 (40272603)
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| Project Period (FY) |
2011 – 2013
|
| Project Status |
Completed (Fiscal Year 2013)
|
| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 口腔癌 / 顎骨浸潤 / NF-κB / NF-kB / 口腔扁平上皮癌 |
|---|
| Research Abstract |
Nuclear factor-kB (NF-kB) is constitutively activated in many cancers, including oral squamous cell carcinoma (OSCC). However, the cellular mechanism underlying NF-kB's promotion of bone invasion by OSCC is unclear. Therefore, we investigated the role of NF-kB in bone invasion by OSCC in vivo. Immunohistochemical staining of OSCC invading bone in 10 patients indicated that the nuclear translocation of NF-kB was increased in OSCC compared with normal squamous epithelial cells. We next injected mouse OSCC SCCVII cells into the masseter region of C3H/HeN mice. Treatment with NBD peptide, a selective NF-kB inhibitor, decreased zygoma and mandible destruction by SCCVII cells, reduced number of osteoclasts by inhibiting RANKL expression in osteoblastic cells and SCCVII cells, increased apoptosis and suppressed the proliferation of SCCVII cells. Taken together, our data clearly indicate that inhibition of NF-kB is useful for inhibiting bone invasion by OSCC
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