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Updated: May 22, 2026

Fabrication of a Multiplexed Artificial Cellular MicroEnvironment Array

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Published on: September 7, 2018

High-throughput cellular screening of engineered ECM based on combinatorial polyelectrolyte multilayer films.

Miloslav Sailer¹, Karen Lai Wing Sun, Ozzy Mermut

¹Department of Chemistry, Program in NeuroEngineering, McGill University, 801 Sherbrooke St. W., Montreal, Quebec H3A 2K6, Canada.

|May 29, 2012

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This study developed a combinatorial method using polyelectrolyte multilayers (PEMs) for high-throughput screening of cellular biocompatibility. Findings reveal that matrix stiffness (modulus) is a critical factor influencing cell survival and viability on engineered surfaces.

Area of Science:

Biomaterials Science
Tissue Engineering
Cell Biology

Background:

Engineering the extracellular matrix is vital for understanding cell function and developing tissue engineering strategies.
Polyelectrolyte multilayers (PEMs) offer a tunable platform for creating 3D cellular environments.
High-throughput screening methods are needed to optimize biomaterial properties for cell support.

Purpose of the Study:

To develop a combinatorial method for generating polyelectrolyte multilayer (PEM) coatings.
To enable high-throughput screening of cellular biocompatibility for optimized cell survival and viability.
To identify key surface properties influencing cell response.

Main Methods:

A combinatorial approach was used to create two-dimensional polyelectrolyte multilayers (PEMs) via layer-by-layer self-assembly from aqueous solutions.

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High-throughput screening was performed using human embryonic kidney 293 cells (HEK 293) and primary rat spinal commissural neurons.

Cell viability was correlated with surface energy (wettability), modulus (stiffness), and surface charge.

Main Results:

Optimized assembly conditions for PEMs supporting cell survival and viability were identified.
Cell viability demonstrated a strong correlation with the modulus (stiffness) of the PEM coatings.
Surface energy and charge also influenced cell viability, but modulus emerged as a critical determinant.

Conclusions:

Combinatorial PEM coatings provide an effective platform for rapid biocompatibility screening.
The mechanical property, specifically the modulus, of engineered surfaces is a crucial factor for supporting cell survival.
This approach advances the design of biomaterials for tissue engineering and regenerative medicine.