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Creating Two-Dimensional Patterned Substrates for Protein and Cell Confinement
Published on: September 6, 2011
Orientation and confinement of cells on chemically patterned polystyrene surfaces
S A Mitchell1, A H C Poulsson, M R Davidson
1Advanced Materials & Biomaterials Research Centre, School of Engineering, The Robert Gordon University, Aberdeen AB10 1FR, UK. stephen.mitchell@rgu.ac.uk
Colloids and Surfaces. B, Biointerfaces
|November 18, 2005
Summary
This study demonstrates how patterned polystyrene (PS) surfaces influence Chinese hamster ovarian (CHO) cell behavior. Cell alignment and confinement are controlled by surface chemistry and feature width, impacting cell size.
Area of Science:
- Materials Science
- Surface Chemistry
- Cell Biology
Background:
- Controlling surface chemistry is crucial for directing cell behavior.
- Patterned surfaces offer unique environments for cell adhesion and orientation.
Purpose of the Study:
- To create chemically distinct regions on polystyrene surfaces using UV/ozone oxidation and photomasking.
- To investigate the influence of these patterned surfaces on Chinese hamster ovarian (CHO) cell attachment, orientation, and size.
Main Methods:
- Surface modification using UV/ozone oxidation and photomasking.
- Surface characterization via Atomic Force Microscopy (AFM), X-ray Photoelectron Spectroscopy (XPS), and contact angle measurements.
- Cell adhesion and orientation studies using Chinese hamster ovarian (CHO) cells.
Main Results:
- Chemically patterned polystyrene surfaces were successfully created.
- CHO cell orientation was significantly influenced by the width of oxidized polystyrene strips and proximity to chemical borders.
- CHO cells exhibited axial alignment along polar/non-polar borders.
- Cell size was dependent on the area of attachment, with cells on larger areas being smaller.
Conclusions:
- Surface chemistry patterns and feature dimensions on polystyrene can precisely control cell behavior.
- This technique enables spatial control over cell adhesion and orientation.
- The findings have implications for designing biomaterials and understanding cell-surface interactions.
