Supporting Healthier Spinal Discs
The discs between the bones of the spine help absorb shock and support movement. As these discs begin to degenerate, inflammation, cell damage, and changes in the surrounding tissue can contribute to discomfort and reduced function.
Researchers are exploring regenerative approaches that may help support healthier disc cells. A 2025 study examined whether extracellular vesicles (EVs) derived from Wharton’s Jelly mesenchymal stem cells (WJ-MSCs) could help human disc cells respond more positively when exposed to inflammatory stress.
Studying the Signals Released by MSCs
Extracellular vesicles are tiny particles released by cells that carry proteins, genetic material, and other biological signals.
In this study, researchers collected EVs from MSCs found in Wharton’s Jelly, the connective tissue of the umbilical cord. They then tested these EVs on degenerative human disc cells grown in a three-dimensional laboratory model.
The goal was to see whether the EVs could help:
- Support disc-cell growth and survival
- Reduce inflammation and cellular stress
- Encourage production of materials that help maintain healthy disc structure
Encouraging Changes in Human Disc Cells
The results showed several positive effects.
Treatment with WJ-MSC-derived EVs increased the growth of human disc cells and improved cell survival compared with cells exposed to inflammation alone.
Researchers also observed increased production of components that make up the extracellular matrix, the supportive material that helps spinal discs maintain their structure and cushioning ability.
Other findings suggested that the EVs helped:
- Reduce markers linked to inflammation and tissue breakdown
- Lower oxidative stress
- Promote biological activity associated with healthier disc tissue
Together, these changes suggest that WJ-MSC-derived EVs may help create a more supportive environment for damaged or degenerating disc cells.
Why a Cell-Free Approach Is Interesting
One of the most notable aspects of this research is that it focused on the signals produced by MSCs rather than the cells themselves.
Researchers increasingly believe that many of the regenerative effects associated with MSCs may come from the substances they release. Extracellular vesicles offer a way to deliver some of these signals through a cell-free regenerative approach.
Wharton’s Jelly MSCs are especially interesting because they come from umbilical cord tissue and are widely studied for their ability to communicate with surrounding cells and influence inflammation and repair.
What This Could Mean for Future Research
This study provides encouraging evidence that Wharton’s Jelly MSC-derived EVs may have potential in future regenerative approaches for intervertebral disc degeneration.
The research was performed in the laboratory using human disc cells rather than directly in patients, so clinical studies will still be needed.
Even so, the findings showed that WJ-MSC-derived EVs supported cell growth and survival while reducing several processes associated with inflammation and degeneration. As research continues, these cell-free signals may become an increasingly important part of regenerative medicine for spine and joint health.
Source Tilotta V, Vadalà G, Di Giacomo G, et al. Wharton’s Jelly Mesenchymal Stromal Cell-Derived Extracellular Vesicles Attenuate Intervertebral Disc Degeneration Under Inflammatory Stress in an In Vitro 3D Culture System. JOR Spine. 2025;8(3). doi: 10.1002/jsp2.70106. PMID: 40842947; PMCID: PMC12366443. Available from: https://pmc.ncbi.nlm.nih.gov/articles/PMC12366443/
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