Protein conformation changes on block copolymer surfaces detected by antibody-functionalized atomic force microscope tips.
Protein conformation changes on block copolymer surfaces detected by antibody-functionalized atomic force microscope tips.
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通过抗体功能化原子力显微镜尖端检测嵌段共聚物表面的蛋白质构象变化。
DOI:
10.1002/jbm.a.33219
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
Bhushan,Bharat
中科院分区:
文献类型:
--
作者:
Palacio,ManuelLB;Schricker,ScottR;Bhushan,Bharat
Conformational changes of fibronectin (Fn) deposited on poly(methyl methacrylate) and poly(acrylic acid) block copolymers with identical chemical compositions were detected using an antibody‐functionalized atomic force microscope (AFM) tip. Based on the antibody‐protein adhesive force maps and phase imaging, it was found that the nanomorphology of the triblock copolymer is conducive to the exposure of the arginine‐glycine‐aspartic acid (RGD) groups in Fn. For the first time, X‐ray photoelectron spectroscopy was used to elucidate surface chemical composition and confirm AFM results. The findings demonstrate that block copolymer nanomorphology can be used to regulate protein conformation and potentially cellular response. © 2011 Wiley Periodicals, Inc. J Biomed Mater Res Part A:, 2012.
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