Jul 30, 2019

Subsurface Imaging of Cell Organelles by Force Microscopy

ACS Nano
Carlos R GuerreroRicardo Garcia

Abstract

The development of high-resolution, label-free, noninvasive, and subsurface microscopy methods of living cells remains a formidable problem. Force-microscopy-based stiffness measurements contribute to our understanding of single-cell nanomechanics. The elastic properties of the cell's outer structures, such as the plasma membrane and actin cytoskeleton, dominate stiffness measurements, which in turns prevents the imaging of intracellular structures. We propose that the above limitation could be overcome by combining 2D sections of the cell's viscoelastic properties. We show the simultaneous imaging of the outer cell's cytoskeleton and the organelles inside the nucleus. The elastic component of interaction force carries information on the cell's outer elements as the cortex and the actin cytoskeleton. The inelastic component is sensitive to the hydrodynamic drag of the inner structures such the nucleoli.

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Mentioned in this Paper

2-Dimensional
Cytoskeleton of Muscle Cell
Giemsa Stain Method
Structure of Inner Surface of Rib
Cell Nucleus
Structure of Outer Surface of Rib
Noninvasive
Microscopy, Atomic Force
Microfilaments
Cell Nucleolus

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