期刊
CLINICAL & DEVELOPMENTAL IMMUNOLOGY
卷 -, 期 -, 页码 -出版社
HINDAWI LTD
DOI: 10.1155/2012/820827
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资金
- New Energy and Industrial Technology Development Organization
- Japanese Ministry of Education, Science, Sports, and Culture
- Grants-in-Aid for Scientific Research [24591455] Funding Source: KAKEN
We previously reported monocyte-derived multipotential cells (MOMCs), which include progenitors capable of differentiating into a variety of mesenchymal cells and endothelial cells. In vitro generation of MOMCs from circulating CD14(+) monocytes requires their binding to extracellular matrix (ECM) protein and exposure to soluble factor(s) derived from circulating CD14(-) cells. Here, we investigated the molecular factors involved in MOMC generation by examining the binding of monocytes to ECM proteins. We found that MOMCs were obtained on the fibronectin, but not on type I collagen, laminin, or poly-L-lysine. MOMC generation was followed by changes in the expression profiles of transcription factors and was completely inhibited by either anti-alpha(5) integrin antibody or a synthetic peptide that competed with the RGD domain for the beta(1)-integrin binding site. These results indicate that acquisition of the multidifferentiation potential by circulating monocytes depends on their binding to the RGD domain of fibronectin via cell-surface alpha(5)beta(1) integrin.
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