Investigating dynamic structural and mechanical changes of neuroblastoma cells associated with glutamate-mediated neurodegeneration

Yuqiang FANG, Catherine Y. Y. IU, Cathy N. P. LUI, Yukai ZOU, Carmen K. M. FUNG, Hung Wing LI, Ning XI, Kin Lam Ken YUNG, King W. C. LAI

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59 Citations (Scopus)

Abstract

Glutamate-mediated neurodegeneration resulting from excessive activation of glutamate receptors is recognized as one of the major causes of various neurological disorders such as Alzheimer's and Huntington's diseases. However, the underlying mechanisms in the neurodegenerative process remain unidentified. Here, we investigate the real-time dynamic structural and mechanical changes associated with the neurodegeneration induced by the activation of N-methyl-D-aspartate (NMDA) receptors (a subtype of glutamate receptors) at the nanoscale. Atomic force microscopy (AFM) is employed to measure the three-dimensional (3-D) topography and mechanical properties of live SH-SY5Y cells under stimulus of NMDA receptors. A significant increase in surface roughness and stiffness of the cell is observed after NMDA treatment, which indicates the time-dependent neuronal cell behavior under NMDA-mediated neurodegeneration. The present AFM based study further advance our understanding of the neurodegenerative process to elucidate the pathways and mechanisms that govern NMDA induced neurodegeneration, so as to facilitate the development of novel therapeutic strategies for neurodegenerative diseases. Copyright © 2014 authors.

Original languageEnglish
Article number7074
JournalScientific Reports
Volume4
DOIs
Publication statusPublished - Nov 2014

Citation

Fang, Y., Iu, C. Y. Y., Lui, C. N. P., Zou, Y., Fung, C. K. M., Li, H. W., Xi, N., Yung, K. K. L., & Lai, K. W. C. (2014). Investigating dynamic structural and mechanical changes of neuroblastoma cells associated with glutamate-mediated neurodegeneration. Scientific Reports, 4, Article 7074. https://doi.org/10.1038/srep07074

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