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A Study on Dual-Response Composite Hydrogels Based on Oriented Nanocellulose.

Lina Dong1,2, Mujiao Liang1,2, Zhongwei Guo1,2

  • 1Macromolecular Platforms for Translational Medicine and Bio-Manufacturing Laboratory, Tsinghua-Berkeley Shenzhen Institute, Shenzhen 518055, P.R. China.

International Journal of Bioprinting
|September 15, 2022
PubMed
Summary
This summary is machine-generated.

Researchers developed dual-responsive cellulose nanofibers + hyaluronic acid methacrylate (CN+HAMA) hydrogels using 3D printing. These oriented hydrogels show promise for soft-tissue repair by guiding cell growth.

Keywords:
3D printingDirectional arrangementNanocellulose hydrogelThermal responseUltraviolet response

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • 3D Printing

Background:

  • Biological tissues often possess oriented structures crucial for function.
  • Traditional hydrogels struggle to replicate internal structural order.
  • Developing easily synthesized, oriented hydrogels is significant for biomimicry.

Purpose of the Study:

  • To fabricate well-ordered, dual-responsive hydrogels using cellulose nanofibers (CN) and hyaluronic acid methacrylate (HAMA).
  • To investigate the potential of these hydrogels in guided cell growth for soft-tissue repair.

Main Methods:

  • Utilized an extrusion-based 3D printing process to create CN+HAMA hydrogels.
  • Leveraged shear stress during extrusion to achieve directional alignment of CN.
  • Evaluated hydrogel responsiveness to temperature and ultraviolet (UV) light.

Main Results:

  • Successfully produced well-ordered CN+HAMA hydrogels with directionally aligned CN.
  • Demonstrated dual-responsiveness to temperature (reversible gel-solution transition) and UV light.
  • Observed that the oriented hydrogels induced directional cell growth.

Conclusions:

  • The 3D printing method enables facile and rapid fabrication of oriented CN+HAMA hydrogels.
  • These hydrogels exhibit tunable properties via dual-responsiveness.
  • The capacity for inducing directional cell growth highlights potential applications in regenerative medicine and ordered biological soft-tissue repair.