Peripheral Nerve Regeneration Using a Cytokine Cocktail Secreted by Skeletal Muscle-Derived Stem Cells in a Mouse...

Area of Science:

• Regenerative Medicine
• Neuroscience
• Stem Cell Biology

Background:

• Severe peripheral nerve injuries often require clinical intervention due to limited natural healing.
• Skeletal muscle-derived stem cells (Sk-MSCs) are a potential source of therapeutic factors for tissue repair.

Purpose of the Study:

• To investigate the efficacy of a cytokine cocktail derived from Sk-MSCs in promoting peripheral nerve regeneration.
• To evaluate the potential of Sk-MSC-secreted factors as a nerve regeneration acceleration agent.

Main Methods:

• A 6 mm gap in the mouse sciatic nerve was bridged with a collagen tube.
• The cytokine cocktail from Sk-MSCs was administered into the tube (CT group) or a control medium was used (NT group).
• Nerve regeneration was assessed by measuring muscle tension recovery and quantifying axon and myelinated fiber regeneration.

Main Results:

• The cytokine treatment group (CT) exhibited significantly higher tension recovery in plantar flexor muscles.
• Numerical recovery of axons and myelinated fibers was significantly improved in the CT group compared to the NT group.
• Seventeen candidate factors within the cytokine cocktail were identified.

Conclusions:

• The cytokine cocktail secreted by Sk-MSCs effectively facilitates peripheral nerve regeneration.
• This cytokine cocktail represents a promising therapeutic strategy for accelerating nerve repair in clinical settings.