Preparation of mineralized nanofibers: collagen fibrils containing calcium phosphate.
Preparation of mineralized nanofibers: collagen fibrils containing calcium phosphate.
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DOI:
10.1021/nl200116d
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发表时间:
2011-03-09
期刊:
影响因子:
10.8
通讯作者:
Zare RN
中科院分区:
文献类型:
--
作者:
Maas M;Guo P;Keeney M;Yang F;Hsu TM;Fuller GG;Martin CR;Zare RN
We report a straightforward, bottom-up, scalable process for preparing mineralized nanofibers. Our procedure is based on flowing feed solution, containing both inorganic cations and polymeric molecules, through a nanoporous membrane into a receiver solution with anions, which leads to the formation of mineralized nanofibers at the exit of the pores. With this strategy, we were able to achieve size control of the nanofiber diameters. We illustrate this approach by producing collagen fibrils with calcium phosphate incorporated inside the fibrils. This structure, which resembles the basic constituent of bones, assembles itself without the addition of noncollagenous proteins or their polymeric substitutes. Rheological experiments demonstrated that the stiffness of gels derived from these fibrils is enhanced by mineralization. Growth experiments of human adipose derived stem cells on these gels showed the compatibility of the fibrils in a tissue-regeneration context.
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影响因子:
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