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The Submerged Printing of Cells onto a Modified Surface Using a Continuous Flow Microspotter
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Microscale Electro-Hydrodynamic Cell Printing with High Viability.

Jiankang He1, Xiang Zhao1, Jinke Chang1

  • 1State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China.

Small (Weinheim an Der Bergstrasse, Germany)
|November 3, 2017
PubMed
Summary
This summary is machine-generated.

A novel electro-hydrodynamic cell printing method achieves high resolution and cell viability using an insulating substrate. This technique enables precise fabrication of living cellular constructs for biomedical applications.

Keywords:
cell printingelectro-hydrodynamic printinghydrogeltissue engineering

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Area of Science:

  • Biotechnology
  • Biomaterials Engineering
  • Tissue Engineering

Background:

  • Cell printing is crucial for fabricating living cellular constructs in vitro.
  • Existing methods face challenges in achieving both high cell viability and printing resolution.

Purpose of the Study:

  • To develop an electro-hydrodynamic (EHD) cell printing strategy with microscale resolution and high cellular viability.
  • To optimize EHD printing parameters for improved construct fabrication.

Main Methods:

  • Utilized an insulating substrate instead of a semiconductive one to reduce electrical current.
  • Fixed a small nozzle-to-collector distance (100 µm) for precise filament deposition.
  • Optimized process parameters to achieve microscale resolution (<100 µm) and high cell viability (>95%).

Main Results:

  • Reduced electrical current from milliamperes to microamperes by using an insulating substrate.
  • Achieved a minimum hydrogel filament width of 82.4 ± 14.3 µm.
  • Demonstrated high cellular viability (>95%) and normal postproliferative capability of printed cells.

Conclusions:

  • The developed EHD cell printing strategy offers a novel approach for fabricating living cellular constructs.
  • This technique supports the creation of multiple hydrogels and multilayer cell-laden constructs under cell-friendly conditions.
  • The method holds promise for future biomedical innovations, including microscale tissue engineering and organ-on-a-chip systems.