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Related Experiment Video

Updated: Dec 30, 2025

Preparation of Tunable Extracellular Matrix Microenvironments to Evaluate Schwann Cell Phenotype Specification

Preparation of Tunable Extracellular Matrix Microenvironments to Evaluate Schwann Cell Phenotype Specification

Published on: June 2, 2020

Modulating cell response on cellulose surfaces; tunable attachment and scaffold mechanics.

James C Courtenay^1,2, Christoph Deneke³, Evandro M Lanzoni³

¹1Centre for Sustainable Chemical Technologies, University of Bath, Bath, BA2 7AY UK.

Cellulose (London, England)

|January 28, 2020

Summary

Surface modification of cellulose with positively charged groups enhances mammalian cell attachment. Tuning scaffold stiffness further regulates cell morphology, offering new biomaterial possibilities without protein additives.

Keywords:

Cell response Cellulose Chemical modification Simple manufacture Tunable tissue scaffold

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Area of Science:

Biomaterials Science
Surface Chemistry
Cell Biology

Background:

Cell attachment and morphology are crucial for biomaterial performance.
Current methods often rely on protein modifiers or ligands for cell adhesion.
Developing cell-instructive biomaterials without exogenous agents is a significant challenge.

Purpose of the Study:

To chemically modify cellulose surfaces to promote direct mammalian cell attachment.
To investigate the influence of surface charge and scaffold stiffness on cell behavior.
To create novel functionalized cellulose biomaterials for cell support and morphology regulation.

Main Methods:

Cellulose surface modification via reaction with glycidyltrimethylammonium chloride (GTMAC) to introduce trimethylammonium groups.
Quantification of surface charge using ζ-potential and electric force microscopy.
Modulation of cellulose film stiffness through glyoxal crosslinking and measurement via atomic force microscopy.
Assessment of MG-63 cell attachment and morphology on modified cellulose scaffolds.

Main Results:

A low degree of substitution (1.4%) of cationic groups on cellulose significantly increased MG-63 cell attachment (>90%).
Cell attachment plateaued at higher degrees of substitution (ca. 1.85%), correlating with surface charge.
Cell morphology could be effectively regulated by tuning scaffold stiffness (76-448 kPa) via crosslinking.
Direct cell attachment and morphology control were achieved without protein modifiers.

Conclusions:

Tailored cationic cellulose biomaterials can be synthesized through surface functionalization and crosslinking.
These materials promote direct mammalian cell attachment and allow for tunable control over cell morphology.
This approach represents a significant advancement towards cell-instructive biomaterials for implantation, utilizing only scaffold and cell interactions.