Hydrogel microparticles for biomedical applications.

Hydrogel microparticles for biomedical applications.
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DOI:
10.1038/s41578-019-0148-6
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发表时间:
2020-01
期刊:
Nature reviews. Materials
影响因子:
--
通讯作者:
Burdick JA
Burdick JA
中科院分区:
其他
文献类型:
--
作者:
Daly AC;Riley L;Segura T;Burdick JA

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水凝胶微粒(HMPs)在生物医学领域具有广阔的应用前景,从细胞和药物的治疗性输送到组织修复支架的生产和3D打印的生物墨水的生产。生物制剂(细胞和药物)可以使用各种制造技术(间歇乳化、微流体、光刻、电流体(EHD)喷涂和机械粉碎)封装成预定形状和大小的HMP。HMPS可以配制成悬浮液来提供治疗药物,作为颗粒(颗粒状水凝胶)的聚集体,形成促进细胞渗透的微孔支架,或嵌入到块状水凝胶中以获得多尺度行为。HMP悬浮液和颗粒状水凝胶可用于生物制剂的微创输送,当它们由不同HMP种群的混合物组成时,它们显示出模块化特性。在这篇综述中,我们讨论了可用于制备HMP的制备技术,以及HMP体系的多尺度行为及其功能特性,强调了它们相对于传统块状水凝胶的优势。此外,我们还讨论了HMPs在细胞递送、药物递送、支架设计和生物制造方面的应用。
Hydrogel microparticles (HMPs) are promising for biomedical applications, ranging from the therapeutic delivery of cells and drugs to the production of scaffolds for tissue repair and bioinks for 3D printing. Biologics (cells and drugs) can be encapsulated into HMPs of predefined shapes and sizes using a variety of fabrication techniques (batch emulsion, microfluidics, lithography, electrohydrodynamic (EHD) spraying and mechanical fragmentation). HMPs can be formulated in suspensions to deliver therapeutics, as aggregates of particles (granular hydrogels) to form microporous scaffolds that promote cell infiltration or embedded within a bulk hydrogel to obtain multiscale behaviours. HMP suspensions and granular hydrogels can be injected for minimally invasive delivery of biologics, and they exhibit modular properties when comprised of mixtures of distinct HMP populations. In this Review, we discuss the fabrication techniques that are available for fabricating HMPs, as well as the multiscale behaviours of HMP systems and their functional properties, highlighting their advantages over traditional bulk hydrogels. Furthermore, we discuss applications of HMPs in the fields of cell delivery, drug delivery, scaffold design and biofabrication.
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