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Modeling of Cell-Mediated Self-Assembled Colloidal Scaffolds.

C S Dias1,2, C A Custódio3, G C Antunes1,2

  • 1Departamento de Fı́sica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal.

ACS Applied Materials & Interfaces
|October 16, 2020
PubMed
Summary

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Researchers explored self-assembling 3D scaffolds for tissue engineering. They found that scaffold size is maximized at an optimal cell-to-particle ratio, especially when cell adhesion is reduced.

Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Biophysics

Background:

  • Tissue engineering relies on 3D biocompatible scaffolds for cell proliferation and tissue growth.
  • Current scaffold fabrication methods involve controlled processing and *in vivo* implantation, posing biocompatibility challenges.
  • Self-organization of colloidal particles mediated by cells offers an alternative for *in loco* scaffold assembly.

Purpose of the Study:

  • To investigate the self-assembly of 3D scaffolds using a combination of experimental and computational approaches.
  • To determine the relationship between scaffold size and cell-to-particle ratio.
  • To identify parameters that can be tuned to control scaffold size and structure for tissue engineering applications.

Main Methods:

  • Particle-based simulations and mean-field calculations were employed to model scaffold self-assembly.
Keywords:
3D biocompatible matricesbiocompatibilitycolloidal particlesimplantationtissue engineering

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  • Experimental validation was conducted to support simulation findings.
  • The influence of cell-to-particle ratio and cell-cell adhesion on scaffold formation was analyzed.

    • Main Results:

    • Scaffold size generally scales with the cell-to-particle ratio.
    • An optimal cell-to-particle ratio was identified, leading to maximal scaffold size when cell-cell adhesion is minimal.
    • The study demonstrates the potential for designing scaffold size and structure by modulating cell adhesion.

    Conclusions:

    • Numerical simulations provide valuable predictive information for scaffold design in tissue engineering.
    • Tuning cell adhesion in colloidal suspensions is a viable strategy for controlling the size and structure of self-assembled scaffolds.
    • This approach offers a promising alternative to traditional scaffold fabrication and implantation methods.