Elucidation of molecular regulatory mechanism of communication between bone constituent cells under skeletal loading
Project/Area Number |
15K10499
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Orthopaedic surgery
|
Research Institution | University of Occupational and Environmental Health, Japan |
Principal Investigator |
Sakai Akinori 産業医科大学, 医学部, 教授 (90248576)
|
Project Period (FY) |
2015-04-01 – 2020-03-31
|
Project Status |
Completed (Fiscal Year 2019)
|
Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
|
Keywords | メカニカルストレス / カルシトニン / 副甲状腺ホルモン / 海綿骨 / 皮質骨 / アルデヒド脱水素酵素 / マウス / 骨形態計測 / 副甲状腺ホルモン受容体 / 非荷重 / 骨細胞 / 骨粗鬆症 / アセトアルデヒド脱水素酵素 / 二次海綿骨 / 破骨細胞 / TRACP / 骨髄細胞 / カルシトニン受容体 / スクレロスチン / RANKL / カテプシンK / 骨芽細胞 / 海綿骨量 |
Outline of Final Research Achievements |
This investigation revealed that skeletal loading or unloading induced un-coupling of bone formation and bone resorption. Under the unloading condition, osteoclasts were activated and calcitonin receptors were highly expressed in osteoclasts, while under the loading condition or disruption of aldehyde dehydrogenase 2 gene, osteoblasts were activated and parathyroid hormone receptors were highly expressed in osteoblasts and osteocytes. Our studies demonstrated that signal through calcitonin receptor in osteoclasts under the unloading condition and signal through parathyroid hormone receptor in osteoblasts and osteocytes under the loading condition were important for regulatory mechanism for bone adaption of mechanical alteration.
|
Academic Significance and Societal Importance of the Research Achievements |
長期間の臥床や宇宙空間での滞在などの非荷重環境や運動などの荷重環境では、骨芽細胞による骨形成と破骨細胞による骨吸収は連動せずに、個別の変化を示す。本研究課題ではその病態を解明した。非荷重状態では破骨細胞におけるカルシトニン受容体の発現が亢進しその受容体を介したシグナルが、また、荷重負荷状態やアルデヒド脱水素酵素遺伝子欠損状態では骨芽細胞と骨細胞における副甲状ホルモン受容体の発現が亢進しその受容体を介したシグナルが、それぞれ重要である。これらの受容体を介したシグナルを調節することで、非荷重による骨量減少を抑制し、荷重による骨量増加を促進することをさらに効率的にできる可能性がある。
|
Report
(6 results)
Research Products
(59 results)
-
[Journal Article] Acetaldehyde dehydrogenase 2 deficiency increases mitochondrial reactive oxygen species emission and induces mitochondrial protease Omi/HtrA2 in skeletal muscle.2020
Author(s)
Wakabayashi Y, Tamura Y, Kouzaki K, Kikuchi N, Hiranuma K, Menuki K, Tajima T, Yamanaka Y, Sakai A, Nakayama KI, Kawamoto T, Kitagawa K, Nakazato K.
-
Journal Title
Am. J. Physiol. Regul. Integr. Comp. Physiol.
Volume: 318
Issue: 4
Pages: 677-690
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
-
-
-
-
[Journal Article] Influence on the bone mineral density and bone metabolism marker after the interruption and reinitiation of monthly minodronate therapy in postmenopausal women with osteoporosis.2018
Author(s)
Okimoto Nobukazu, Arita Shinobu, Akahoshi Shoji, Baba Kenji, Fukuhara Shito, Ishikura Toru, Yoshioka Toru, Fuse Yoshifumi, Okamoto Ken, Menuki Kunitaka, Sakai Akinori
-
Journal Title
Osteoporos Sarcopenia
Volume: 4
Issue: 2
Pages: 61-68
DOI
Related Report
Peer Reviewed / Open Access
-
-
-
-
-
-
-
-
-
[Journal Article] Spontaneous differentiation of human mesenchymal stem cells on poly-lactic-co-glycolic acid nano-fiber scaffold2016
Author(s)
Koshiro Sonomoto, Kunihiro Yamaoka, Hiroaki Kaneko, Kaoru Yamagata, Kei Sakata, Xiangmei Zhang, Masahiro Kondo, Yukichi Zenke, Ken Sabanai, Shingo Nakayamada, Akinori Sakai, Yoshiya Tanaka
-
Journal Title
PLOS ONE
Volume: in press
Issue: 4
Pages: e0153231-e0153231
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
-
-
-
-
-
-
-
[Journal Article] Efficacy of combined treatment with alendronate (ALN) and eldecalcitol, a new active vitamin D analog, compared to that of concomitant ALN, vitamin D plus calcium treatment in Japanese patients with primary osteoporosis.2015
Author(s)
Sakai A, Ito M, Tomomitsu T, Tsurukami H, Ikeda S, Fukuda F, Mizunuma H, Inoue T, Saito H, Nakamura T
-
Journal Title
Osteoporos Int
Volume: 26
Issue: 3
Pages: 1193-1202
DOI
Related Report
Peer Reviewed / Open Access
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] 骨折と骨代謝の接点2016
Author(s)
酒井昭典
Organizer
第42回 日本骨折治療学会
Place of Presentation
京王プラザホテル(東京都・新宿区)
Year and Date
2016-07-01
Related Report
Invited
-
-
-
-
-
-
-
-
[Presentation] 骨折と骨代謝の接点2015
Author(s)
酒井昭典
Organizer
第33回日本骨代謝学会学術集会
Place of Presentation
京王プラザホテル(東京都新宿区)
Year and Date
2015-07-23
Related Report
Invited
-
-
-
-
-
-
-
-
-