| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Outline of Final Research Achievements |
A mouse model for sporadic medulloblastoma has been successfully established. Progression of medulloblastoma in the cerebellum tissue was observed to be affected by the genetic background of a model mouse, implicating that the gene dosage of the tumor suppressor gene , Patched1 (Ptc1), has a critical role not only for tumor formation, but for tumor microenvironment. In the cerebellum of Ptc1(+/-) mice, expression of CXCL9 for immune response is elevated significantly, and CXCL10 is also highly expressed in the tumor tissue itself. These chemokines are specific ligands for activation of the CXCR3 receptor signaling pathway, and it was suggested that this pathway is critically involved in forming a microenvironment for tumor progression through the regulation of the microglia-mediated immune response .
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