Human Recombinant Peptide Sponge Enables Novel, Less Invasive Cell Therapy for Ischemic Stroke

Area of Science:

• Regenerative Medicine
• Neuroscience
• Biomaterials Science

Background:

• Ischemic stroke poses a significant therapeutic challenge.
• Bone marrow stromal cell (BMSC) transplantation shows promise for stroke treatment.
• Optimal delivery routes and scaffolds for BMSC therapy remain under investigation.

Purpose of the Study:

• To evaluate a novel recombinant peptide (RCP) sponge as a scaffold for BMSC transplantation in a rat ischemic stroke model.
• To assess the safety and efficacy of BMSC-RCP sponge constructs compared to traditional BMSC suspension delivery.

Main Methods:

• Rats underwent permanent middle cerebral artery occlusion (MCAo) to induce ischemic stroke.
• BMSCs were cultured within RCP sponges and transplanted onto the neocortex 7 days post-MCAo.
• Control groups received BMSC suspension or vehicle.
• Functional recovery was assessed via motor function tests, and histological analysis was performed.

Main Results:

• BMSCs proliferated effectively within the RCP sponge.
• The BMSC-RCP sponge significantly improved functional recovery compared to the vehicle group.
• Histological analysis showed minimal inflammatory response to the RCP sponge.
• Transplanted BMSCs migrated to the peri-infarct area and some differentiated into neurons.

Conclusions:

• The RCP sponge serves as a beneficial and less invasive scaffold for BMSC transplantation in ischemic stroke.
• This approach promotes significant functional recovery and neurogenesis.
• The RCP sponge represents a promising animal protein-free scaffold for future human cell therapy applications in stroke treatment.