Calcein Binding to Assess Mineralization in Hydrogel Microspheres.

Calcein Binding to Assess Mineralization in Hydrogel Microspheres.
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DOI:
10.3390/polym13142274
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发表时间:
2021-07-11
期刊:
影响因子:
5
通讯作者:
Olabisi R
Olabisi R
中科院分区:
工程技术3区
文献类型:
--
作者:
White K;Chalaby R;Lowe G;Berlin J;Glackin C;Olabisi R

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We describe a method to assess mineralization by osteoblasts within microspheres using calcein. Fluorescence imaging of calcein bound to the calcium in hydroxyapatite permits assessment of the mineralized portion of the extracellular matrix. Colorimetric imaging of Alizarin Red S complexed with calcium also gives measures of mineralization, and in tissue cultures calcein and Alizarin Red S have been shown to bind to the same regions of mineral deposits. We show that when the mineralization takes place within hydrogel microspheres, Alizarin Red S does not stain mineral deposits as consistently as calcein. As tissue engineers increasingly encapsulate osteoprogenitors within hydrogel scaffolds, calcein staining may prove a more reliable method to assess this mineralization.
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