Stem Cells and Regenerative Medicine
Can microgravity help expand stem cells for therapy, and what has been shown?
Chapter summary
it is plausible but unproven.
Key takeaways
- 1
Stem-cell therapies need large numbers of cells grown without losing their ability to become specialised tissue, and some studies suggest microgravity can help expand certain stem cells while keeping them undifferentiated.
- 2
NASA's InSPA programme funded a bioreactor for blood-forming stem cells with BioServe Space Technologies and the University of Colorado Boulder; neural crest stem cells returned from the ISS in 2026 still functioned.
- 3
But therapies would need cells made under clinical manufacturing rules and delivered fresh, which capsule logistics cannot yet guarantee.
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