Home › Cell Biology › Cellular Encapsulation in 3D Hydrogels for Tissue Engineering
Cell Biology JoVE (Open Access) Citable · DOI

Cellular Encapsulation in 3D Hydrogels for Tissue Engineering

DOI: 10.3791/1590-v
What you'll learn
  • ✓ Prepare and sterilize materials for 3D hydrogel cell encapsulation
  • ✓ Execute two distinct hydrogel crosslinking methods: michael-type and light-initiated
  • ✓ Assess encapsulated cell viability and behavior using established techniques
Protocol

We present protocols for the 3-dimensional (3D) encapsulation of cells within synthetic hydrogels. The encapsulation procedure is outlined for two commonly used methods of crosslinking (michael-type addition and light-initiated free radical mechanisms), as well as a number of techniques for assessing encapsulated cell behavior.

Difficulty
intermediate
Total time
~4–6 hours per batch (material prep through crosslinking and initial assessment)
Biosafety
BSL-1

Steps

1
Prepare and sterilize hydrogel materials

Gather synthetic hydrogel precursors and sterilize all materials and equipment. Ensure proper storage and handling of crosslinking reagents according to manufacturer protocols.

▶ 00:35
2
Prepare cells for encapsulation

Culture, harvest, and resuspend cells to target density for encapsulation. Verify cell viability and count prior to gel formulation.

▶ 02:45
3
Form hydrogels via michael-type crosslinking

Mix cell-laden hydrogel precursors and initiate michael-type addition crosslinking. Allow gelation to proceed according to protocol timelines.

▶ 04:56
4
Form hydrogels via light-initiated crosslinking

Prepare cell-precursor mixture and expose to controlled light source for free radical-initiated polymerization. Monitor crosslinking progression and gel formation.

▶ 06:25
5
Assess encapsulated cell behavior and viability

Apply established techniques to quantify cell survival, proliferation, and differentiation within 3D gels. Document outcomes and potential tissue engineering applications.

▶ 07:17
💬 Comments coming soon