期刊
NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE
卷 9, 期 5, 页码 694-701出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nano.2012.12.002
关键词
BMP-2 gradient; Concentration effects; poly(methyl methacrylate); C2C12; Biotin-streptavidin
资金
- Centro de Investigacion Biomedica en Red en Bioingenieria, Biomateriales y Nanomedicina (CIBER BBN), Spain
- VI National RDI Plan
- Iniciativa Ingenio
- Consolider Program
- CIBER Actions
- Instituto de Salud Carlos III
- European Regional Development Fund
- Commission for Universities and Research of the Department of Innovation, Universities and Enterprise of the Generalitat de Catalunya [2009 SGR 505]
- Ministerio de Ciencia e Innovacion of Spain
Cells can respond to small changes in a varying concentration of exogenous signaling molecules. Here we propose the use of continuous surface chemical gradients for the in-depth study of dose-dependent effects on cells. A continuous surface gradient of bone morphogenetic protein-2 (BMP-2) is presented. The gradient covers a narrow range of surface densities (from 1.4 to 2.3 pmol/cm(2)) with a shallow slope (0.9 pmol/cm(3)). These characteristics represent a quasi-homogeneous surface concentration at the cell scale, which is crucial for cell screening studies. Cell fate evaluation at early stages of osteogenesis in C2C12 cells, indicates the potential of continuous gradients for in vitro screening applications. From the Clinical Editor: The authors propose the use of surface-applied continuous chemical gradients for in-depth study of dose-dependent effects on cells. The method is demonstrated using BMP-2 proteins on C2C12 cells as a model system. (C) 2013 Elsevier Inc. All rights reserved.
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