2013 Fiscal Year Final Research Report
Research of Notch signal in pathophysiology and therapeutics of osteoarthritis
Project/Area Number |
23390358
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Orthopaedic surgery
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Research Institution | The University of Tokyo |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
KAWAGUCHI Hiroshi 東京大学, 医学部附属病院, 届出診療医 (40282660)
OHASHI Satoru 東京大学, 医学部附属病院, 助教 (20466767)
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Project Period (FY) |
2011-04-01 – 2014-03-31
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Keywords | 関節軟骨 / 変形性関節症 / Notchシグナル |
Research Abstract |
Notch signaling consists of 5 ligands and 4 receptors (Notch1-4). Upon ligand binding, the Notch receptor is cleaved and its intracellular domain (ICD) translocates to the nucleus, where it binds to Rbpj, a transcription repressor, and activates expression of target genes including Hes/Hey family member. Notch1 and 2 were expressed in mouse and human articular chondrocytes, and their ICDs were translocated to the nucleus with cartilage degradation. When we deleted Rbpj in chondrocytes after skeletal growth using tamoxifen-inducible Cre mice and created an experimental OA model, cartilage degradation and Mmp13 expression were suppressed. We further investigated functions of Hes1, only target gene expressed abundantly in chondrocytes, using Hes1-flox mice. When we deleted Hes1 in the same way, OA development was suppressed while skeletal development was not affected.
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[Journal Article] Generation of Col2a1-EGFP-iPS cells for monitoring chondrogenic differentiation2013
Author(s)
Saito T, Yano F, Mori D, Ohba S, Hojo H, Otsu M, Eto K, Nakauchi H, Tanaka S, Chung UI, Kawaguchi H
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Journal Title
PLoS ONE
Volume: 8
Pages: e74137
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[Journal Article] Hedgehog-Gli activators direct osteo-chondrogenic function of bone morphogenetic protein toward osteogenesis in the perichondrium2013
Author(s)
Hojo H, Ohba S, Taniguchi K, Shirai M, Yano F, Saito T, Ikeda T, Nakajima K, Komiyama Y, Nakagata N, Suzuki K, Mishina Y, Yamada M, Konno T, Takato T, Kawaguchi H, Kambara H, Chung UI.
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Journal Title
J Biol Chem
Volume: 288
Pages: 9924-32
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[Journal Article] Notch signaling in chondrocytes modulates endochondral ossification and osteoarthritis development2013
Author(s)
Hosaka Y, Saito T (equally contributed), Sugita S, Hikata T, Kobayashi H, Fukai A, Taniguchi Y, Hirata M, Akiyama H, Chung UI, Kawaguchi H
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Journal Title
Proc Natl Acad Sci U S A
Volume: 110
Pages: 1875-80
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[Journal Article] A novel disease-modifying osteoarthritis drug targeting Runx12013
Author(s)
Yano F, Hojo H, Ohba S, Fukai A, Hosaka Y, Ikeda T, Saito T, Hirata M, Chikuda H, Takato T, Kawaguchi H, Chung UI
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Journal Title
Ann Rheum Dis
Volume: 72
Pages: 748-53
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[Journal Article] Gli1 Protein Participates in Hedgehog-mediated Specification of Osteoblast Lineage during Endochondral Ossification2012
Author(s)
Hojo H, Ohba S, Yano F, Saito T, Ikeda T, Nakajima K, Komiyama Y, Nakagata N, Suzuki K, Takato T, Kawaguchi H, Chung UI
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Journal Title
J Biol Chem
Volume: 287
Pages: 17860-9
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[Journal Article] C/EBPβ and RUNX2 cooperate to degrade cartilage with MMP-13 as the target and HIF-2α as the inducer in chondrocytes2012
Author(s)
Hirata M, Kugimiya F, Fukai A, Saito T, Yano F, Ikeda T, Mabuchi A, Sapkota BR, Akune T, Nishida N, Yoshimura N, Nakagawa T, Tokunaga K, Nakamura K, Chung UI, Kawaguchi H
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Journal Title
Hum Mol Genet
Volume: 21
Pages: 1111-23
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[Journal Article] Lack of a chondroprotective effect of cyclooxygenase 2 inhibition in a surgically induced model of osteoarthritis in mice2012
Author(s)
Fukai A, Kamekura S, Chikazu D, Nakagawa T, Hirata M, Saito T, Hosaka Y, Ikeda T, Nakamura K, Chung UI, Kawaguchi H
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Journal Title
Arthritis Rheum
Volume: 64
Pages: 198-203
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