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Related Experiment Video

Updated: Apr 20, 2026

Cellular Encapsulation in 3D Hydrogels for Tissue Engineering
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Developing robust, hydrogel-based, nanofiber-enabled encapsulation devices (NEEDs) for cell therapies.

Duo An1, Yewei Ji2, Alan Chiu1

  • 1Department of Biological and Environmental Engineering, Cornell University Ithaca, NY 14853, USA.

Biomaterials
|December 3, 2014
PubMed
Summary
This summary is machine-generated.

We developed novel nanofiber-enabled encapsulation devices (NEEDs) for treating hormone deficiencies. These robust hydrogel devices successfully encapsulated cells and corrected diabetes in mice, showing therapeutic potential.

Keywords:
Cell encapsulationCompartmentalizationHydrogel devicesNanofibersType 1 diabetes

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Cell Therapy

Background:

  • Cell encapsulation is promising for treating hormone deficiencies and endocrine disorders.
  • Existing methods face challenges in device robustness and cell function maintenance.

Purpose of the Study:

  • To develop a universal approach for fabricating robust, hydrogel-based, nanofiber-enabled encapsulation devices (NEEDs).
  • To assess the NEEDs' biocompatibility, mass transfer properties, and therapeutic potential in a diabetes model.

Main Methods:

  • Fabrication of NEEDs using electrospun nanofiber membranes impregnated with hydrogel precursors.
  • Utilizing capillary action for hydrogel infiltration and crosslinking within nanofiber scaffolds.
  • Encapsulating and culturing various cell types, including pancreatic islets, within the NEEDs.
  • In vivo testing of islet-encapsulated NEEDs in chemically-induced diabetic mice.

Main Results:

  • Successfully fabricated macroscopic NEEDs with retained hydrogel biocompatibility and nanofiber mechanical robustness.
  • Demonstrated facile mass transfer and successful cell culture within the devices.
  • Achieved sustained correction of diabetes in mice for 8 weeks post-implantation of islet-loaded NEEDs.
  • Retrieved implants showed minimal fibrosis with live, functional islets.

Conclusions:

  • The NEEDs design offers a versatile and effective platform for cell encapsulation.
  • This technology has the potential to overcome key challenges in cell encapsulation for therapeutic applications.
  • NEEDs show promise for advancing cell-based therapies for endocrine disorders and beyond.