Story perspectives

Stem-Cell Microrobots Restore Spinal Function in Mice, Zebrafish

6/2/2026

Summary

Story summary

ETH Zurich and University of Zurich researchers used stem-cell microrobots to repair spinal cords in mice and zebrafish.
Six-micrometer bots are fabricated on parallel lab-on-chip systems and guided by magnetic fields to injury sites.
Embedded nanoparticles emit electrical impulses that stimulate cell growth, allowing zebrafish larvae to swim near-normally after three days.
Severed-spine mice regained nerve connections and improved gait after 28 days, with no side effects and bots dissolving.

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Story summary

ETH Zurich and University of Zurich researchers used stem-cell microrobots to repair spinal cords in mice and zebrafish.
Six-micrometer bots are fabricated on parallel lab-on-chip systems and guided by magnetic fields to injury sites.
Embedded nanoparticles emit electrical impulses that stimulate cell growth, allowing zebrafish larvae to swim near-normally after three days.
Severed-spine mice regained nerve connections and improved gait after 28 days, with no side effects and bots dissolving.