Selective and Improved Photoannealing of Microporous Annealed Particle (MAP) Scaffolds.

Selective and Improved Photoannealing of Microporous Annealed Particle (MAP) Scaffolds.
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DOI:
10.1021/acsbiomaterials.0c01580
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发表时间:
2021-02-08
影响因子:
5.8
通讯作者:
Griffin DR
Griffin DR
中科院分区:
工程技术2区
文献类型:
--
作者:
Pfaff BN;Pruett LJ;Cornell NJ;de Rutte J;Di Carlo D;Highley CB;Griffin DR

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Microporous Annealed Particle (MAP) scaffolds consist of a slurry of hydrogel microspheres that undergo annealing to form a solid scaffold. MAP scaffolds have contained functional groups with dual abilities to participate in Michael-type addition (gelation) and radical polymerization (photoannealing). Functional groups with efficient Michael-type additions react with thiols and amines under physiological conditions, limiting usage for therapeutic delivery. We present a heterofunctional maleimide/methacrylamide 4-arm PEG macromer (MethMal) engineered for selective photopolymerization compatible with multiple polymer backbones. Rheology using two classes of photoinitiators demonstrates advantageous photopolymerization capabilities. Functional assays show benefits for therapeutic delivery and 3D printing without impacting cell viability.
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