Hydrogel microparticles for biomedical applications.

Journal Article (Journal Article)

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.

Full Text

Duke Authors

Cited Authors

  • Daly, AC; Riley, L; Segura, T; Burdick, JA

Published Date

  • January 2020

Published In

Volume / Issue

  • 5 / 1

Start / End Page

  • 20 - 43

PubMed ID

  • 34123409

Pubmed Central ID

  • PMC8191408

Electronic International Standard Serial Number (EISSN)

  • 2058-8437

International Standard Serial Number (ISSN)

  • 2058-8437

Digital Object Identifier (DOI)

  • 10.1038/s41578-019-0148-6

Language

  • eng