In vivo and in vitro tracking of erosion in biodegradable materials using non-invasive fluorescence imaging.
In vivo and in vitro tracking of erosion in biodegradable materials using non-invasive fluorescence imaging.
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DOI:
10.1038/nmat3095
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发表时间:
2011-08-21
期刊:
影响因子:
41.2
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中科院分区:
文献类型:
--
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The design of erodible biomaterials relies on the ability to program thein vivoretention time, which necessitates real-time monitoring of erosion. However,in vivoperformance cannot always be predicted by traditional determination ofin vitroerosion,, and standard methods sacrifice samples or animals, preventing sequential measures of the same specimen. We harnessed non-invasive fluorescence imaging to sequentially followin vivomaterial-mass loss to model the degradation of materials hydrolytically (PEG:dextran hydrogel) and enzymatically (collagen). Hydrogel erosion ratesin vivoandin vitrocorrelated, enabling the prediction ofin vivoerosion of new material formulations fromin vitrodata. Collagenin vivoerosion was used to infer physiologicin vitroconditions that mimic erosivein vivoenvironments. This approach enables rapidin vitroscreening of materials, and can be extended to simultaneously determine drug release and material erosion from a drug-eluting scaffold, or cell viability and material fate in tissue-engineering formulations.
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