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Effects of Gravity, Microgravity or Microgravity Simulation on Early Mammalian Development.

Douglas M Ruden1,2, Alan Bolnick1, Awoniyi Awonuga1

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Keywords:
embryogenesismicrogravityprotein kinase

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Area of Science:

  • Space Biology
  • Developmental Biology
  • Gravitational Biology

Background:

  • Life on Earth evolved gravity responses for homeostasis.
  • Microgravity in space (e.g., International Space Station) causes physiological changes.
  • These changes impact health, work efficiency, and quality of life.

Purpose of the Study:

  • To review mammalian early development in microgravity.
  • To analyze enzymatic and epigenetic mechanisms mediating gravity responses.
  • To update experimental techniques for space-based developmental biology.

Main Methods:

  • Review of existing literature on microgravity simulation and spaceflight experiments.
  • Analysis of mammalian fertilization and early development data.
  • Examination of enzymatic and epigenetic factors.

Main Results:

  • No effects of microgravity simulation on mouse fertilization observed in some studies.
  • Negative effects of microgravity simulation on early mammalian development (pre-gastrulation) reported.
  • Varied outcomes depending on the microgravity simulation modality.

Conclusions:

  • Mammalian development may be sensitive to microgravity, with potential prenatal and transgenerational effects.
  • Enzymatic and epigenetic mechanisms are key to understanding these responses.
  • Further research and refined experimental techniques are needed for zero-gravity developmental biology.