Volume 21, Issue 9 2408941
Research Article

Effect of Brief Electrical Stimulation on Cell Biomechanics in Hereditary Sensory Neuropathy

Daniel Ta

Daniel Ta

School of Science, Western Sydney University, Penrith, New South Wales, 2751 Australia

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Anu Anthony

Anu Anthony

School of Science, Western Sydney University, Penrith, New South Wales, 2751 Australia

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Ashour Sliow

Ashour Sliow

School of Science, Western Sydney University, Penrith, New South Wales, 2751 Australia

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Boyang Wan

Boyang Wan

School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, New South Wales, 2006 Australia

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Leo Zhang

Leo Zhang

Centre for Advanced Manufacturing Technology, School of Engineering, Design and Built Environment, Western Sydney University, Penrith, New South Wales, 2751 Australia

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Michael Higgins

Michael Higgins

ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute AIIM Facility Innovation Campus, University of Wollongong, Wollongong, New South Wales, 2522 Australia

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Lisa Lam

Lisa Lam

School of Science, Western Sydney University, Penrith, New South Wales, 2751 Australia

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David Mahns

David Mahns

School of Medicine, Western Sydney University, Penrith, New South Wales, 2751 Australia

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Gaetano Gargiulo

Gaetano Gargiulo

Biomedical Engineering & Neuroscience Research Group, The MARCS Institute, Western Sydney University, Penrith, NSW, 2751 Australia

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Paul Breen

Paul Breen

Biomedical Engineering & Neuroscience Research Group, The MARCS Institute, Western Sydney University, Penrith, NSW, 2751 Australia

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Damia Mawad

Damia Mawad

The School of Materials Science and Engineering, UNSW Sydney, Sydney, New South Wales, 2052 Australia

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Herleen Ruprai

Herleen Ruprai

School of Science, Western Sydney University, Penrith, New South Wales, 2751 Australia

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Simon Myers

Simon Myers

School of Science, Western Sydney University, Penrith, New South Wales, 2751 Australia

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Daunia Laurenti

Daunia Laurenti

School of Medicine, Western Sydney University, Penrith, New South Wales, 2751 Australia

NICM Health Research Institute, Western Sydney University, Penrith, New South Wales, 2751 Australia

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Antonio Lauto

Corresponding Author

Antonio Lauto

School of Science, Western Sydney University, Penrith, New South Wales, 2751 Australia

E-mail: [email protected]

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First published: 03 February 2025
[Correction added on February 18, 2025, after first online publication: The author's name L.Z. has been corrected in the byline.]

Abstract

SH-SY5Y neuroblastoma cells are widely used to model neurodegenerative disorders like Alzheimer's, Parkinson's, Huntington's, and Hereditary Sensory Neuropathy type 1A (HSN-1A), a peripheral nerve condition causing axon degeneration and sensory loss. A cell model of HSN-1A is developed by overexpressing wild-type and mutant SPTLC1 genes (C133W, C133Y, V144D). Cells are cultured on plastic and gold substrates, with brief electrical stimulation applied to the gold-grown cells. Atomic force microscopy (AFM) is used to measure Young's modulus, indentation, and energy dissipation. Finite Element Method and non-linear modeling validate the results. In the absence of stimulation, mutant cells show lower stiffness compared to non-transfected cells, indicating a direct biomechanical impact of the mutations. Brief electrical stimulation significantly increases the stiffness of mutant cells, particularly in C133W (99%), C133Y (100%), and V144D (111%) variants, despite the mutations. Energy dissipation of stimulated V144D cells decreases to levels comparable to untreated non-transfected cells. The simulations support the AFM measurements, demonstrating that brief electrical stimulation can partially reverse the biomechanical effects of gene mutations.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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