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NanoIndentation, an ImageJ Plugin for the Quantification of Cell Mechanics

  • Vincent Mirabet
  • , Nelly Dubrulle
  • , Léa Rambaud
  • , Léna Beauzamy
  • , Mathilde Dumond
  • , Yuchen Long
  • , Pascale Milani
  • , Arezki Boudaoud
  • Ecole Normale Supérieure de Lyon

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

Growth and morphogenesis in plants depend on cell wall mechanics and on turgor pressure. Nanoindentation methods, such as atomic force microscopy (AFM), enable measurements of mechanical properties of a tissue at subcellular resolution, while confocal microscopy of tissues expressing fluorescent reporters indicates cell identity. Associating mechanical data with specific cells is essential to reveal the links between cell identity and cell mechanics. Here we describe an image analysis protocol that allows us to segment AFM scans containing information on tissue topography and/or mechanics, to stitch several scans in order to reconstitute an entire region of the tissue investigated, to segment the scans and label cells, and to associate labeled cells to the projection of confocal images. Thus all mechanical data can be mapped to the corresponding cells and to their identity. This protocol is implemented using NanoIndentation, a plugin that we are developing in the Fiji distribution of ImageJ.

Original languageEnglish
Title of host publicationMethods in Molecular Biology
PublisherHumana Press Inc.
Pages97-106
Number of pages10
DOIs
Publication statusPublished - 1 Jan 2022
Externally publishedYes

Publication series

NameMethods in Molecular Biology
Volume2395
ISSN (Print)1064-3745
ISSN (Electronic)1940-6029

Keywords

  • Atomic force microscopy
  • Confocal microscopy
  • Epifluorescence
  • Fiji
  • Image analysis
  • ImageJ
  • Mechanical image
  • Nanoindentation
  • Segmentation
  • Stitching
  • Topographic image
  • Turgor pressure
  • Young’s modulus

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