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The Extracellular Matrix01:42

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Fabrication of a Biomimetic Nano-Matrix with Janus Base Nanotubes and Fibronectin for Stem Cell Adhesion
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Nanoparticle-Decorated Biomimetic Extracellular Matrix for Cell Nanoencapsulation and Regulation.

Kyungsene Lee1, Brandon Davis1, Xuelin Wang1

  • 1Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, USA.

Angewandte Chemie (International Ed. in English)
|June 5, 2023
PubMed
Summary

Researchers developed a novel cell nanoencapsulation method using biomimetic extracellular matrices. This technique enables precise cell regulation and high-capacity nanoparticle delivery, enhancing cell-based applications.

Keywords:
Biomimetic MaterialCell RegulationCell Surface EngineeringEncapsulationNanoparticle

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Nanotechnology

Background:

  • Current cell encapsulation technologies primarily focus on cell protection, neglecting essential cell regulation mechanisms.
  • Effective cell regulation is critical for numerous cell-based applications, including transplantation and biological production.

Purpose of the Study:

  • To develop a novel cell nanoencapsulation method that facilitates both cell protection and precise regulation.
  • To create a platform for high-capacity nanoparticle retention and controlled delivery to encapsulated cells.

Main Methods:

  • Utilized an ultrathin biomimetic extracellular matrix to construct cell nanocapsules (CN2).
  • Decorated nanocapsules with gold nanoparticles (AuNPs) to demonstrate nanoparticle carrying capacity.
  • Investigated the effect of light irradiation on encapsulated cells, monitoring temperature changes and reporter gene expression via the heat shock protein 70 (HSP70) promoter.

Main Results:

  • The developed CN2 method achieved high-capacity nanoparticle retention near cell surfaces.
  • Encapsulated cells exhibited high viability and maintained normal metabolic functions.
  • Light irradiation of AuNP-decorated nanocapsules induced localized heating, activating the HSP70 promoter and regulating reporter gene expression.

Conclusions:

  • The biomimetic nanocapsule platform (CN2) effectively enables cell nanoencapsulation and regulation.
  • CN2's ability to be decorated with various nanoparticles offers a versatile tool for advancing cell-based applications.
  • This technology holds significant promise for applications requiring controlled cellular responses and targeted delivery.