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Related Concept Videos

Studying the Cytoskeleton01:17

Studying the Cytoskeleton

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The cytoskeletal architecture can be studied using different microscopic and biochemical techniques. Electron microscopy was instrumental in discovering the cytoskeletal architecture around the 1960s, which allowed obtaining structural information at a high-resolution level. However, the sample preparation procedure often limits this ability in biological samples. Several protocols have been developed over the years to optimize sample preparation. In one of the protocols known as rotary...
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The adherens junctions that anchor cells together are multi-protein complexes that dynamically adapt to mechanical stimuli such as tensile forces and shear stress. Mechanosensory proteins in these junctions can sense such mechanical stimuli and undergo a shift in their conformation, resulting in an altered function — a process called mechanotransduction.
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Cell-matrix's Response to Mechanical Forces01:13

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In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue. 
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Related Experiment Video

Updated: Jul 14, 2025

High-throughput Flow-cytometry Measurement of Cellular Mechanotype Based on Rupture and Delivery of DNA Tension Probes into Cells
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Molecular mechanocytometry using tension-activated cell tagging.

Rong Ma1, Sk Aysha Rashid1, Arventh Velusamy1

  • 1Department of Chemistry, Emory University, Atlanta, GA, USA.

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|October 5, 2023
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Summary

We developed tension-activated cell tagging (TaCT) to label cells using molecular force. This new method allows fluorescent analysis of cell adhesion receptor forces via flow cytometry.

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Area of Science:

  • Biotechnology
  • Cell Biology
  • Biophysics

Background:

  • Flow cytometry is a standard technique for analyzing single-cell properties.
  • Current methods often rely on fluorescent labeling of intracellular molecules or surface markers.

Purpose of the Study:

  • To introduce tension-activated cell tagging (TaCT), a novel method for cell labeling.
  • To demonstrate TaCT's ability to quantify molecular forces transmitted through cell adhesion receptors.

Main Methods:

  • TaCT utilizes fluorescent labeling based on the magnitude of molecular force.
  • Cells are analyzed using conventional flow cytometry after applying TaCT.

Main Results:

  • TaCT successfully labeled cells based on force transmission.
  • Proof-of-concept analysis was performed on fibroblasts and mouse platelets.

Conclusions:

  • TaCT provides a new approach to study cell mechanics at the single-cell level.
  • This technique offers insights into the role of molecular forces in cellular processes.