Analysis of platelet integrin signaling and association with vascular diseases
Project/Area Number |
16K09826
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Hematology
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Research Institution | Osaka University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
冨山 佳昭 大阪大学, 医学部附属病院, 准教授 (80252667)
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Project Period (FY) |
2016-04-01 – 2019-03-31
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Project Status |
Completed (Fiscal Year 2018)
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Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
Keywords | インテグリン / 血小板 / 血栓・止血学 |
Outline of Final Research Achievements |
We identified CalDAG-GEFI deficiency and kindlin-3 deficiency by analysis of patients with severe bleeding tendency from their infancy. Using our developed αIIbβ3 activation kinetic assay, we revealed that delayed activation of αIIbβ3 leads to severe bleeding tendency. Furthermore, we analyzed constitutive active αIIb(R995W) knock-in mice, and found that the mice showed macrothrombocytopenia like human subjects. We found that impaired proplatelet formation may responsible for the phenotype. KI mice also showed highly impaired platelet function mainly due to reduced αIIbβ3 expression in platelets.
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Academic Significance and Societal Importance of the Research Achievements |
血小板は動脈硬化性血管病変の形成に中心的役割を担う。今回の研究により血小板機能の中で最も重要であるαIIbβ3の活性化に必須の分子とそのメカニズムの一端を明らかにした。またαIIbβ3の恒常的活性化が血小板産生の障害および血小板機能に重大な影響を与えることをマウスモデルを用いて明らかにした。これらによりαIIbβ3活性化の生体内における新たな生理的意義を明らかにするとともに、αIIbβ3活性化を制御する抗血小板薬開発の可能性を示した。
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Report
(4 results)
Research Products
(29 results)
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[Journal Article] Distinct effects of daratumumab on indirect and direct antiglobulin tests: a new method employing 0.01 mol/L dithiothreitol for negating the daratumumab interference with preserving K antigenicity (Osaka method).2018
Author(s)
Hosokawa M, Kashiwagi H, Nakayama K, Sakuragi M, Nakao M, Morikawa T, Kiyokawa T, Aochi H, Nagamine K, Shibayama H, Tomiyama Y.
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Journal Title
Transfusion
Volume: 58
Issue: 12
Pages: 3003-3013
DOI
Related Report
Peer Reviewed
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[Journal Article] Immature platelet fraction (IPF) as a apredictive value for thrombopoietic recovery after allogeneic stem cell transplantation2018
Author(s)
Sakuragi M, Hayashi S, Maruyama M, Kiyokawa T, Nagamine K, Fujita J, Maeda T, Kato H, Kashiwagi H, Kanakura Y, Tomiyama Y.
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Journal Title
International Journal of Hematology
Volume: 107
Issue: 3
Pages: 320-326
DOI
Related Report
Peer Reviewed
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[Journal Article] Expression levels of ABCG2 on cord red blood cells and study of fetal anemia associated with anti-Jr(a).2016
Author(s)
Fujita S, Kashiwagi H, Tomimatsu T, Ito S, Mimura K, Kanagawa T, Endo M, Miyoshi T, Okamura Y, Tani Y, Tomiyama Y, Kimura T.
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Journal Title
Transfusion.
Volume: 56
Issue: 5
Pages: 1171-1181
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] Acquired Glanzmann thrombasthenia due to marked reduction of surface αIIbβ3 expression with non function-blocking anti-αIIbβ3 antibodies2018
Author(s)
Akuta K, Kashiwagi H, Yujiri T, Nishiura N, Morikawa Y, Kato H, Honda S, Kanakura Y, Tomiyama Y
Organizer
The 10th Congress of the Asian-Pacific Society on Thrombosis and Hemostasis (2018.6.28-30, Royton Sapporo, Hokkaido, Japan)
Related Report
Int'l Joint Research
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[Presentation] Platelet integrin αIIbβ3 activation kinetics in inherited platelet functional disorders; the role of ADP receptor P2Y12, CalDAG-GEFI and kindlin-3 in αIIbβ3 activation by inside-out signaling2018
Author(s)
Kato H, Nishiura N, Akura K, Kashiwagi H, Kokame K, Miyata T, Kanakura Y, Tomiyama Y
Organizer
The American Society of Hematology 60th Annual Meeting (2018.12.1-4, San Diego Convention Center, CA, USA)
Related Report
Int'l Joint Research
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[Presentation] αIIb(R990W), a Gain-of Function Mutation of αIIbβ3, Knock-in Mice Show Moderately Impaired Thrombopoiesis2018
Author(s)
Akuta K, Kiyomizu K, Kashiwagi H, Kunishima S, Banno F, Kokame K, Nishiura N, Kato H, Honda S, Kanakura Y, Miyata T, Tomiyama Y
Organizer
The American Society of Hematology 60th Annual Meeting (2018.12.1-4, San Diego Convention Center, CA, USA)
Related Report
Int'l Joint Research
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[Presentation] FCMを用いた血小板減少患者における血小板機能~凝集能を含めた検討~2018
Author(s)
西浦伸子, 柏木浩和, 芥田敬吾, 森川陽一郎, 加藤 恒, 本田繁則, 金倉譲, 冨山佳昭
Organizer
第40回日本血栓止血学会学術集会(2018.6.28-30, ロイトン札幌, 北海道, 渥美達也)
Related Report
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[Presentation] 血小板機能異常症におけるフィブリノゲン受容体インテグリンaIIbb3活性化キネティクスの評価2018
Author(s)
加藤 恒, 柏木浩和, 森川陽一郎, 芥田敬吾, 西浦伸子, 本田繁則, 小亀浩市, 宮田敏行, 金倉 譲, 冨山佳昭
Organizer
第40回日本血栓止血学会学術集会(2018.6.28-30, ロイトン札幌, 北海道, 渥美達也)
Related Report
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[Presentation] インテグリンαIIbβ3活性化変異αIIb (R990W)ノックインマウスにおける血小板産生障害2018
Author(s)
芥田敬吾, 清水一亘, 柏木浩和, 國島伸治, 坂野史明, 小亀浩市, 西浦伸子, 森川陽一郎, 加藤 恒, 本田繁則, 金倉 譲, 宮田敏行, 冨山佳昭
Organizer
第40回日本血栓止血学会学術集会(2018.6.28-30, ロイトン札幌, 北海道, 渥美達也)
Related Report
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[Presentation] インテグリンαIIbβ3活性化変異αIIb (R990W)ノックインマウスにおける血小板産生障害2018
Author(s)
芥田敬吾, 清水一亘, 柏木浩和, 國島伸治, 坂野史明, 小亀浩市, 西浦伸子, 森川陽一郎, 加藤恒, 本田繁則, 金倉譲, 宮田敏行, 冨山佳昭
Organizer
第80回日本血液学会学術集会 (2018.10.12-14, 大阪国際会議場, 大阪, 松村到)
Related Report
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[Presentation] 家族歴を有する血小板減少症の女性に認めたインテグリンβ3L744P変異の一例2018
Author(s)
中澤英之,酒井 均, 仁科さやか, 川上徹, 柏木浩和, 冨山佳昭, 石川真澄, 山口智美, 古庄知己, 石田文宏
Organizer
第80回日本血液学会学術集会 (2018.10.12-14, 大阪国際会議場, 大阪, 松村到)
Related Report
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[Presentation] Acquired Glanzmann thromboasthenia due to marked reduction of surface aIIbb3 expression with non function-blocking anti-aIIbb3 antibodies2017
Author(s)
Akuta K, Kashiwagi H, Yujiri T, Nishiura N, Morikawa Y, Kato H, Honda S, Kanakura Y, Tomiyama Y
Organizer
International Society on THrombosis and Haemostasis 2017 Congress, Berlin, Germany
Related Report
Int'l Joint Research
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[Presentation] Complete failure of integrin aIIbb3 activation in kinetic assay association with severe bleeding problems in a patient with kindlin-3 deficiency2017
Author(s)
Kato H, Ito Y, Kashiwagi H, Morikawa Y, AKuta K, Nishiura N, Honda S, Kokame K, Miyata T, Kanakura Y, Tomiyama Y
Organizer
International Society on THrombosis and Haemostasis 2017 Congress, Berline, Germany
Related Report
Int'l Joint Research
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