Bioorthogonal layer-by-layer encapsulation of pancreatic islets via hyperbranched polymers.
Bioorthogonal layer-by-layer encapsulation of pancreatic islets via hyperbranched polymers.
复制标题
通过超支聚合物对胰岛的生物正交分层封装。
DOI:
10.1021/am401981g
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发表时间:
2013-10-23
影响因子:
9.5
通讯作者:
Stabler, Cherie L.
中科院分区:
文献类型:
--
作者:
Gattas-Asfura, Kerim M.;Stabler, Cherie L.
The encapsulation of viable tissues via layer-by-layer polymer assembly provides a versatile platform for cell surface engineering, with nanoscale control over capsule properties. Herein, we report the development of a hyperbranched polymer-based, ultrathin capsule architecture expressing bioorthogonal functionality and tailored physiochemical properties. Random carbodiimide-based condensation of 3,5-dicarboxyphenyl glycineamide on alginate yielded a highly branched polysaccharide with multiple, spatially restricted, and readily functionalizable terminal carboxylate moieties. Poly(ethylene glycol) (PEG) was utilized to link azido end groups to the structured alginate. Together with phosphine functionalized poly(amido amine) (PAMAM) dendrimer, nanoscale layer-by-layer coatings, covalently stabilized via Staudinger ligation, were assembled onto solid surfaces and pancreatic islets. The effects of electrostatic and/or bioorthogonal covalent interlayer interactions on the resulting coating efficiency and stability, as well as pancreatic islet viability and function, were studied. These hyperbranched polymers provide a flexible platform for the formation of covalently stabilized ultrathin coatings on viable cells and tissues. In addition, the hyperbranched nature of the polymers presents a highly functionalized surface capable of bioorthogonal conjugation of additional bioactive or labeling motifs.
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影响因子:
4.9
作者:
Gattas-Asfura, Kerim M.;Fraker, Christopher A.;Stabler, Cherie L.
通讯作者:
Stabler, Cherie L.
影响因子:
15
作者:
Such, Georgina K.;Quinn, John F.;Caruso, Frank
通讯作者:
Caruso, Frank
影响因子:
4.1
作者:
Ahrer, K;Buchacher, A;Jungbauer, A
通讯作者:
Jungbauer, A
DOI:
10.1016/0021-9673(92)85088-b
发表时间:
1992-02-21
期刊:
JOURNAL OF CHROMATOGRAPHY
影响因子:
--
作者:
DOLLINGER, G;CUNICO, B;JONES, R
通讯作者:
JONES, R
DOI:
10.1073/pnas.1113560109
发表时间:
2012-03-13
影响因子:
11.1
作者:
Pedraza, Eileen;Coronel, Maria M.;Stabler, Cherie L.
通讯作者:
Stabler, Cherie L.