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Updated: Dec 8, 2025

In Vitro Growth of Mouse Preantral Follicles Under Simulated Microgravity
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Changes in Nuclear Shape and Gene Expression in Response to Simulated Microgravity Are LINC Complex-Dependent.

Srujana Neelam1,2,3, Brian Richardson4, Richard Barker2

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The Linker of Nucleoskeleton and Cytoskeleton (LINC) complex mediates cellular responses to simulated microgravity. Nuclear shape and gene expression change with microgravity exposure duration in a LINC-dependent manner.

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Area of Science:

  • Cell biology
  • Biophysics
  • Space biology

Background:

  • Microgravity affects cytoskeleton organization, cell and nuclear morphology, and gene expression.
  • The Linker of Nucleoskeleton and Cytoskeleton (LINC) complex connects the nucleus to the cytoskeleton.
  • The role of the LINC complex in microgravity responses is not well understood.

Purpose of the Study:

  • To investigate if the LINC complex mediates cellular responses to simulated microgravity.
  • To understand the role of LINC complex proteins in adapting to microgravity.

Main Methods:

  • Utilized a 3-D clinostat (Gravite) to simulate microgravity.
  • Assessed nuclear shape and gene expression changes.
  • Examined responses based on duration of simulated microgravity exposure.

Main Results:

  • Nuclear shape is responsive to simulated microgravity in a LINC-dependent manner.
  • Differential gene expression is also LINC-dependent under simulated microgravity.
  • The observed cellular responses vary with the duration of microgravity exposure.

Conclusions:

  • The LINC complex plays a crucial role in mediating cellular responses to microgravity.
  • LINC-dependent genes are likely involved in sensing and responding to mechanical forces from gravity.
  • Findings suggest LINC complex's importance in understanding cellular adaptation to space environments.