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Related Experiment Video

Updated: Sep 22, 2025

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Surface Optimization and Design Adaptation toward Spheroid Formation On-Chip.

Neda Azizipour1, Rahi Avazpour2, Mohamad Sawan1,3,4

  • 1Institut de Génie Biomédical, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada.

Sensors (Basel, Switzerland)
|May 20, 2022
PubMed
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This summary is machine-generated.

Uniform spheroid formation is crucial for cancer research drug testing. Surface-optimized polydimethylsiloxane (PDMS) biochips using bovine serum albumin (BSA) coating enable consistent, homogenous spheroid generation for improved preclinical models.

Area of Science:

  • Biotechnology
  • Materials Science
  • Cancer Research

Background:

  • Spheroids are vital for preclinical cancer research and drug testing.
  • Spheroid uniformity (size, shape, density) is critical for reliable results.
  • Controlling cell self-assembly for homogenous spheroids on polydimethylsiloxane (PDMS) is challenging.

Purpose of the Study:

  • To develop surface-optimized PDMS biochips for uniform spheroid formation.
  • To investigate the efficacy of surface modification in controlling cell adhesion and aggregation.
  • To establish a reliable method for producing homogenous, non-scaffold-based spheroids.

Main Methods:

  • Developed PDMS biochip platforms with optimized surface treatments.
  • Utilized bovine serum albumin (BSA) for surface modification to suppress cell adhesion.
Keywords:
3D cell culturePDMScancermicrofluidicspheroidsurface modification

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  • Tested biochips with six human cell lines and a co-culture model for spheroid generation.

    • Main Results:

    • Surface-optimized PDMS biochips successfully produced uniform, homogenous spheroids.
    • 10% BSA coating effectively suppressed cell adhesion to PDMS surfaces.
    • BSA concentration is critical; 3% BSA showed limited cell repellent properties.

    Conclusions:

    • Surface modification of PDMS biochips is essential for controlled spheroid formation.
    • BSA-coated biochips provide a robust platform for generating uniform, non-scaffold spheroids.
    • This method enhances the reliability of spheroid-based preclinical cancer drug testing.