Note (General)In Orthodontic therapy, osteoclast precursors such as monocytes and macrophages migrate from vessels into the periodontium and then differentiate into osteoclasts, causing bone resorption. Focal adhesion kinase (FAK) is a 125-kDa non-receptor type tyrosine kinase that localizes to focal adhesions. FAK is involved in osteoclastic bone resorption. Vascular cell adhesion molecule-1 (VCAM -1) is bound to VLA-4(very late antigen-4) which is kind of the α<sub>4</sub> β1-integrin, and recruits monocytic osteoclast progenitors and elevates local osteoclast activity.In our present study we focused on VCAM-1 /α<sub>4</sub> integrin-mediated the differentiation into osteoclasts and found that this type of the differentiation was mediated through FAK. RAW267.4 expressed both α<sub>4</sub> integrins, and it was reported that expression of α<sub>4</sub> integrin and its counterreceptor, VCAM-1, was not enhanced in response to receptor activator of NF-B ligand (RANKL). Neutralizing antibodies against integrin α4 effectively inhibit the differentiation into osteoclasts and phosphorylation of FAK. These findings establish VCAM-1 regulate the differentiation into osteoclasts in bone.
2013
Collection (particular)国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文
Date Accepted (W3CDTF)2022-03-06T04:54:00+09:00
Data Provider (Database)国立国会図書館 : 国立国会図書館デジタルコレクション