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Description:

The extracellular matrix determines cell morphology and stiffness by manipulating the cytoskeleton. The impacts of extracellular matrix cues, including the mechanical and topographical cues on microtubules and their role in biological behaviors, are previously studied. However, there is a lack of understanding about how microtubules (MTs) are affected by environmental chemical cues, such as extracellular matrix density. Specifically, it is crucial to understand the connection between cellular morphology and mechanics induced by chemical cues and the role of microtubules in these cellular responses. To address this, surfaces with high and low cRGD (cyclic Arginine-Glycine-Aspartic acid) peptide ligand densities are used. The cRGD is diluted with a bioinert ligand to prevent surface native cellular remodeling. The cellular morphology, actin, and microtubules differ on these surfaces. Confocal fluorescence microscopes and atomic force microscopy (AFM) are used to determine the structural and mechanical cellular responses with and without microtubules. Microtubules are vital as an intracellular scaffold in elongated morphology correlated with low cRGD compared to rounded morphology in high cRGD substrates. The contributions of MTs to nucleus morphology and cellular mechanics are based on the underlying cRGD densities. Finally, this study reveals a significant correlation between MTs, actin networks, and vimentin in response to the underlying densities of cRGD.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: Mechanobiology, Tensegrity, Microtubules, cRGD, Cytoekeleton

Date published: 2024-09-29

Publisher: Wiley

Journal:

• Small (ISSN: 16136810) vol. 21 issue. 13

Funding:

• Japan Society for the Promotion of Science 21J40229
• Japan Society for the Promotion of Science 23KJ2167
• Japan Society for the Promotion of Science 22H00596
• Japan Society for the Promotion of Science 23K17481

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1002/smll.202312282

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Updated at: 2025-06-10 07:53:10 +0900

Published on MDR: 2025-06-10 12:22:43 +0900