Engineering Multi-Cellular Spheroids for Tissue Engineering and Regenerative Medicine

Se jeong Kim, Eun Mi Kim, Masaya Yamamoto, Hansoo Park, Heungsoo Shin

Research output: Contribution to journalReview articlepeer-review

1 Citation (Scopus)

Abstract

Multi-cellular spheroids are formed as a 3D structure with dense cell–cell/cell–extracellular matrix interactions, and thus, have been widely utilized as implantable therapeutics and various ex vivo tissue models in tissue engineering. In principle, spheroid culture methods maximize cell–cell cohesion and induce spontaneous cellular assembly while minimizing cellular interactions with substrates by using physical forces such as gravitational or centrifugal forces, protein-repellant biomaterials, and micro-structured surfaces. In addition, biofunctional materials including magnetic nanoparticles, polymer microspheres, and nanofiber particles are combined with cells to harvest composite spheroids, to accelerate spheroid formation, to increase the mechanical properties and viability of spheroids, and to direct differentiation of stem cells into desirable cell types. Biocompatible hydrogels are developed to produce microgels for the fabrication of size-controlled spheroids with high efficiency. Recently, spheroids have been further engineered to fabricate structurally and functionally reliable in vitro artificial 3D tissues of the desired shape with enhanced specific biological functions. This paper reviews the overall characteristics of spheroids and general/advanced spheroid culture techniques. Significant roles of functional biomaterials in advanced spheroid engineering with emphasis on the use of spheroids in the reconstruction of artificial 3D tissue for tissue engineering are also thoroughly discussed.

Original languageEnglish
Article number2000608
JournalAdvanced Healthcare Materials
Volume9
Issue number23
DOIs
Publication statusPublished - 2020 Dec 2

Keywords

  • 3D tissues
  • biomaterials
  • cellular aggregates
  • spheroid engineering
  • spheroids

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering
  • Pharmaceutical Science

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