Spinal cord injuries frequently result in irreversible paralysis due to the limited regenerative capabilities of nerve cells and the formation of scar tissue that obstructs the growth of new nerve fibers. In an innovative study conducted in Switzerland, researchers have developed a method that involves integrating living stem cells—capable of transforming into neurons—with magnetoelectric nanoparticles.
These microbots, measuring just 6 micrometers in width, were injected into the injured area and subsequently directed to the site using a magnetic field. The nanoparticles effectively converted magnetic signals into small electrical impulses, stimulating the stem cells to differentiate into nerve cells.
In experiments with zebrafish larvae suffering from spinal cord injuries, the treated subjects regained their normal swimming abilities in a mere three days. Similarly, in mice with completely severed spinal cords, new neural connections emerged at the injury location within a month, leading to marked improvements in their walking abilities and coordination.
Before this groundbreaking technology can advance to human trials, researchers must establish the ideal magnetic-field parameters and ensure the long-term safety of the treatment, including understanding the fate of the nanoparticles post-treatment. Nevertheless, the research team is optimistic that this technique could eventually be adapted for applications in cardiology, cancer treatment, and wound healing.
Informational material. 18+.
