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Related Experiment Video

Updated: Jul 2, 2025

In Vitro Growth of Mouse Preantral Follicles Under Simulated Microgravity
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Morphological Changes of 3T3 Cells under Simulated Microgravity.

Minh Thi Tran1, Chi Nguyen Quynh Ho2,3, Son Nghia Hoang2,3

  • 1Faculty of Applied Technology, School of Technology, Van Lang University, Ho Chi Minh City 70000, Vietnam.

Cells
|February 23, 2024
PubMed
Summary
This summary is machine-generated.

Simulated microgravity (SMG) alters 3T3 cell morphology by affecting cytoskeletal structures and cell cycle progression. These changes are linked to reduced expression of key structural proteins and cell cycle regulators.

Keywords:
3T3 cellcell cycle progressioncytokinesiscytoskeletonmorphologysimulated microgravity

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Area of Science:

  • Cell Biology
  • Gravitational Biology
  • Biophysics

Background:

  • Cells exhibit sensitivity to gravitational changes, particularly affecting cytoskeletal organization and cell morphology.
  • Understanding these effects is crucial for fields like astrobiology and space medicine.

Purpose of the Study:

  • To investigate the impact of simulated microgravity (SMG) on 3T3 cell morphology.
  • To characterize changes in cell and nuclear shape, cytoskeleton, and cell cycle progression under SMG.

Main Methods:

  • 3T3 cells were exposed to SMG for 72 hours using Gravite®.
  • Fluorescent staining, cell cycle analysis, and Western blot were employed to assess morphological and molecular changes.

Main Results:

  • SMG induced decreased nuclear intensity, area, and altered nuclear shape, alongside increased cell diameter.
  • Cytoskeletal alterations included disrupted microtubule distribution and irregular contractile ring/spindle formation.
  • SMG led to cell cycle arrest by downregulating key cell cycle regulators and structural proteins like β-actin and α-tubulin.

Conclusions:

  • Simulated microgravity significantly remodels 3T3 cell morphology.
  • These morphological changes are driven by alterations in cytoskeletal structure and downregulation of structural proteins and cell cycle regulators.