Newly Generated 3D Schwann-Like Cell Spheroids From Human Adipose-Derived Stem Cells Using a Modified Protocol

Area of Science:

• Regenerative Medicine
• Cell Therapy
• Neuroscience

Background:

• Peripheral nerve injury (PNI) is a common trauma with limited treatment options.
• Schwann cells (SCs) promote nerve regeneration but are difficult to source clinically.
• Adipose-derived stem cells (ADSCs) can differentiate into Schwann-like cells (SLCs), but their efficacy is limited.

Purpose of the Study:

• To develop an improved method for generating functional Schwann-like cells for PNI treatment.
• To evaluate the efficacy of 3D-cultured Schwann-like cell spheroids derived from ADSCs.

Main Methods:

• ADSCs were differentiated into SLCs using a modified protocol with a recombinant peptide.
• Cells were cultured as 3D spheroids using petaloid μ-pieces.
• In vitro assays (morphology, gene expression, neurotrophic factor secretion, neurite outgrowth) and in vivo sciatic nerve injury model were used for evaluation.

Main Results:

• 3D SLC spheroids showed enhanced differentiation efficiency and neurotrophic factor secretion compared to 2D cultures.
• 3D SLCs promoted significantly greater neurite growth in vitro.
• Transplantation of 3D SLCs into a mouse sciatic nerve injury model improved motor function recovery.

Conclusions:

• 3D culture of ADSC-derived SLCs significantly enhances their regenerative potential.
• This approach offers a promising cell-based therapy for peripheral nerve regeneration.
• 3D SLC spheroids represent a viable strategy for clinical application in treating PNI.