The role of bone marrow-derived CD11b positive cells in recurrence of oral cancer
| Project/Area Number |
26293431
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Surgical dentistry
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| Research Institution | Yokohama City University |
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Principal Investigator |
KIOI Mitomu 横浜市立大学, 医学部, 准教授 (30545059)
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| Co-Investigator(Kenkyū-buntansha) |
藤内 祝 横浜市立大学, 医学研究科, 教授 (50172127)
谷口 英樹 横浜市立大学, 医学研究科, 教授 (70292555)
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2016: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2015: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
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| Keywords | がん微小環境 / 再発 / 血管形成 / 癌 / 血管新生 / 腫瘍微小環境 / 癌再発 / がん再発 |
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| Outline of Final Research Achievements |
In the present study, we investigated the role of infiltrating CD11b+ myeloid cells in the vascularization and recurrence of oral squamous cell carcinoma (OSCC). In a xenograft mouse model, local irradiation caused vascular damage and hypoxia in the tumor and increased infiltration of CD11b+ myeloid cells. These infiltrating cells showed characteristics of M2 macrophages (M2Mφs) and are associated with the promotion of vascularization. M2Mφs promoted tumor progression in recurrence after irradiation. In addition, we found that CD11b+ myeloid cells, as well as CD206+ M2Mφs, are increased during recurrence after radiotherapy in human OSCC specimens. Our findings indicate that polarization of M2Mφs derived from recruited CD11b+ cells into tumor after irradiation contributes vascularization leading to recurrence of OSCC.
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Report
(5 results)
Research Products
(4 results)
