Neuropathic pain is a type of chronic pain that develops when nerves or the nervous system becomes damaged or irritated. Unlike pain from a simple injury, neuropathic pain is often linked to changes in how nerves send and process signals. This can lead to symptoms such as burning, tingling, numbness, shooting pain, hypersensitivity, or pain caused by touch that would not normally be painful.
Because neuropathic pain can last for months or years, it can affect sleep, movement, mood, daily activities, and quality of life. Many current treatments focus on managing symptoms, but they may not fully address the nerve damage or inflammation that contributes to long-term pain.
In this review published in Frontiers in Cell and Developmental Biology, researchers explored how mesenchymal stem cells, also known as MSCs, may support nerve repair and pain relief through regenerative medicine. The review focused on how MSCs may help regulate inflammation, support axon regeneration, encourage remyelination, release helpful growth factors, and deliver repair signals through exosomes.
What Is Neuropathic Pain?
Neuropathic pain occurs when the nervous system is damaged or not functioning properly. It may be associated with several conditions, including:
- Peripheral nerve injury
- Spinal cord injury
- Diabetic neuropathy
- Postherpetic neuralgia
- Trigeminal neuralgia
- Multiple sclerosis-related nerve pain
- Chronic post-stroke pain
- Painful radiculopathy
The review explains that neuropathic pain is complex because it often involves inflammation, nerve injury, abnormal nerve signaling, and changes in the surrounding tissue environment. This is one reason researchers are studying regenerative approaches that may help support the underlying nerve tissue rather than only reducing pain signals.
Why MSCs Are Being Studied for Nerve Pain
Mesenchymal stem cells are widely studied in regenerative medicine because they can release helpful signaling molecules, interact with immune cells, and support tissue repair. For neuropathic pain, MSCs are especially interesting because they may influence several healing pathways at once.
According to the review, MSCs may help:
- Reduce inflammation
- Support immune balance
- Promote axon regeneration
- Encourage remyelination
- Release neurotrophic factors
- Support blood vessel formation
- Protect nerve cells
- Release exosomes involved in tissue repair
This broad activity is important because nerve pain is rarely caused by one single issue. In many cases, inflammation, nerve damage, impaired blood flow, and abnormal pain signaling all contribute to symptoms.
Supporting Nerve Repair and Remyelination
One of the key areas discussed in the review is the ability of MSCs to support axon regeneration and remyelination.
Axons are the long extensions of nerve cells that help transmit signals throughout the body. Myelin is the protective coating around nerve fibers that helps signals travel properly. When nerves are damaged, both axons and myelin can be affected, which may contribute to pain, weakness, sensitivity, and reduced function.
The review describes research suggesting that MSCs may help support nerve repair by encouraging axon growth and helping restore myelin. Umbilical cord-derived MSCs were also discussed as a promising source of MSCs in nerve injury research, with studies showing support for myelin-related proteins, reduced demyelination, and improved nerve function in experimental models.
Reducing Inflammation Around Damaged Nerves
Inflammation plays a major role in neuropathic pain. After nerve injury, immune cells and support cells in the nervous system may become overactive and release inflammatory molecules that increase pain sensitivity.
The review explains that MSCs may help calm this response by reducing inflammatory cytokines and influencing immune cell behavior. This may help create a more balanced environment around damaged nerves.
MSCs may also affect microglia and astrocytes, which are support cells in the nervous system. When these cells become overly active, they can contribute to neuroinflammation and pain signaling. By helping regulate this activity, MSCs may support healthier nerve communication.
MSC-Derived Exosomes and Pain Relief
The review also highlighted MSC-derived exosomes as an important area of research. Exosomes are tiny particles released by cells that carry proteins, RNA, microRNAs, and other biological signals. These signals can influence how other cells behave.
Researchers are studying MSC-derived exosomes because they may provide many of the helpful effects of MSCs in a cell-free form.
According to the review, MSC-derived exosomes may help:
- Regulate inflammation
- Reduce cell stress
- Support axon regeneration
- Encourage blood vessel formation
- Improve cell communication
- Influence pain-related pathways
Human umbilical cord MSC-derived exosomes were also discussed in the review. Some studies suggested that these exosomes may help reduce pain-related behaviors in animal models by regulating neuroinflammation and supporting repair pathways in the spinal cord.
Why This Research Matters
Neuropathic pain can be difficult to treat because it involves more than discomfort. It often includes nerve damage, inflammation, and changes in how the nervous system processes pain. Because of this, researchers are interested in therapies that may support the nerve environment itself.
This review highlights MSC-based therapy as a promising area of regenerative medicine research because MSCs may help regulate inflammation, support nerve repair, promote remyelination, release growth factors, and deliver exosomes involved in healing.
While more clinical research is still needed, the article shows how regenerative medicine may help move pain treatment beyond symptom management and toward strategies that support nerve repair and recovery.
A Promising Area of Regenerative Pain Research
Mesenchymal stem cells continue to be studied for their potential role in neuropathic pain because of their regenerative, anti-inflammatory, and neuroprotective properties. Their ability to support nerve repair, improve cell communication, and influence inflammation makes them an important focus in chronic nerve pain research.
As scientists continue studying MSCs and MSC-derived exosomes, these approaches may become an increasingly important part of regenerative medicine research for nerve pain and neurological recovery.
Source
Zhang W-J, Pi X-W, Hu D-X, Liu X-P, Wu M-M. Advances and challenges in cell therapy for neuropathic pain based on mesenchymal stem cells. Front Cell Dev Biol. 2025 Feb 21;13:1536566. doi: 10.3389/fcell.2025.1536566. Available from: https://www.frontiersin.org/journals/cell-and-developmental-biology/articles/10.3389/fcell.2025.1536566/full
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