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Surface Modification Techniques for Endothelial Cell Seeding in PDMS Microfluidic Devices.

Fahima Akther1,2, Shazwani Binte Yakob3, Nam-Trung Nguyen2

  • 1Australian Institute for Bioengineering and Nanotechnology, the University of Queensland, Brisbane, QLD 4072, Australia.

Biosensors
|November 24, 2020
PubMed
Summary
This summary is machine-generated.

Modifying polydimethylsiloxane (PDMS) surfaces to be hydrophilic is crucial for effective cell seeding in microfluidic lab-on-a-chip devices. This review explores various methods to enhance PDMS hydrophilicity for improved cell culture applications.

Keywords:
PDMSendothelial cellshydrophobicitymicrofluidicssurface treatment

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Cell Biology

Background:

  • Microfluidic lab-on-a-chip devices offer reduced sample/reagent use and enhanced control over the cellular microenvironment.
  • Polydimethylsiloxane (PDMS) is a popular material for microfluidics due to its favorable properties like biocompatibility and optical transparency.
  • The inherent hydrophobicity of PDMS poses challenges for cell adhesion and can lead to non-specific molecule adsorption, impacting cellular behavior.

Purpose of the Study:

  • To review and compare different techniques for hydrophilic modification of PDMS surfaces.
  • To highlight methods that facilitate endothelial cell seeding in PDMS-based microfluidic devices.
  • To provide insights into the advantages and disadvantages of various surface modification strategies.

Main Methods:

  • Literature review of surface modification techniques for PDMS.
  • Analysis of methods aimed at increasing PDMS surface hydrophilicity.
  • Evaluation of techniques based on their effectiveness for endothelial cell culture.

Main Results:

  • Hydrophilic modification is essential to overcome PDMS surface hydrophobicity for successful cell culture.
  • Various surface treatments can alter PDMS wettability and improve cell adhesion.
  • The choice of modification technique impacts device performance and cellular responses.

Conclusions:

  • Effective hydrophilic modification of PDMS is critical for advanced microfluidic cell culture applications.
  • Understanding the trade-offs of different surface treatments allows for optimized device design.
  • Further research into surface modification can enhance the utility of PDMS in cell-based assays.