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A Novel Stretching Platform for Applications in Cell and Tissue Mechanobiology

A Novel Stretching Platform for Applications in Cell and Tissue Mechanobiology

Published on: June 3, 2014

A soft, stretchable and conductive biointerface for cell mechanobiology.

Irene Bernardeschi¹, Francesco Greco, Gianni Ciofani

¹Center for Micro-BioRobotics, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025, Pontedera, PI, Italy.

Biomedical Microdevices

|March 24, 2015

Summary

Researchers developed a new soft, stretchable biointerface for studying cell mechanics. This device enables mechanical stimulation and electrical recording, observing a 30% reduction in impedance variation during cell differentiation.

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Live Cell Imaging during Mechanical Stretch

Live Cell Imaging during Mechanical Stretch

Published on: August 19, 2015

Area of Science:

Mechanobiology
Biomaterials
Bioelectronics

Background:

Investigating cellular responses to mechanical stimuli (mechanotransduction) requires advanced tools.
Current methods often lack the dynamic, non-invasive, and natural-like conditions necessary for accurate cell studies.

Purpose of the Study:

To develop a novel soft, stretchable, and conductive biointerface for simultaneous mechanical stimulation and dynamic electrical impedance recording of cells.
To evaluate the biocompatibility, cell adhesion, proliferation, and differentiation on the developed biointerface.

Main Methods:

Fabrication of a wrinkled poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) conductive layer on a pre-stretched poly(dimethylsiloxane) (PDMS) substrate.
Assessment of biointerface conductivity under uniaxial strain (up to 10%) and during cell culturing.
Evaluation of SH-SY5Y human neuroblastoma cell adhesion, proliferation, and differentiation on the biointerface.

Main Results:

The biointerface demonstrated excellent stretchability and conductivity, maintaining electrical integrity up to 10% strain.
Successful cell culturing, adhesion, and proliferation were observed on the transparent and biocompatible surface.
A significant reduction of approximately 30% in relative impedance variation was measured upon mechanical stimulation, indicating altered cellular responses.

Conclusions:

The novel soft, stretchable, and conductive biointerface effectively supports cell culture and enables dynamic mechanotransduction studies.
The device allows for non-invasive mechanical stimulation and simultaneous electrical monitoring of cellular responses.
This technology advances the study of mechanobiology by providing a more naturalistic platform for cell investigation.