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Updated: Jan 10, 2026
06:54
Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology
Published on: July 5, 2022
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Nuclear Packing Sets Fluidity Along the Epithelial to Mesenchymal Spectrum
Biorxiv : the Preprint Server for Biology
|November 24, 2025
Summary
Cancer cell fluidity during the epithelial-to-mesenchymal transition (EMT) is linked to nuclear stiffness. Softening cell nuclei promotes fluidity, revealing nuclear morphology as a key determinant of cancer cell jamming and movement.
Area of Science:
- Cell biology
- Biophysics
- Cancer research
Background:
- Jamming in cancer is often studied using phase diagrams to map fluidity during the epithelial-to-mesenchymal transition (EMT).
- Understanding cancer cell fluidity is crucial for comprehending metastasis and developing effective treatments.
Purpose of the Study:
- To investigate the role of nuclear properties in regulating cancer cell fluidity and coalescence.
- To identify key cellular and nuclear features that predict fluidity during EMT.
Main Methods:
- Coalescence assays using homotypic and heterotypic multicellular spheroids.
- Analysis of nuclear morphology (stiffness, shape, internuclear spacing) and cellular properties.
- Development of an effective nuclear packing metric.
Main Results:
- Small changes in EMT status dramatically alter cancer cell fluidity.
- Stiff cell nuclei impede spheroid coalescence, while softening nuclei promote fluidization.
- Cancer cell fluidity is accurately predicted by static nuclear properties like spacing and shape.
Conclusions:
- Nuclear morphology and packing are critical determinants of cancer cell fluidity.
- The effective nuclear packing metric, based on nuclear occupancy and elongation, predicts fluidity.
- These findings offer new insights into cancer cell dynamics and potential therapeutic targets.
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