Decellularized Splenic Matrix as a Scaffold for Spleen Bioengineering

Area of Science:

• Regenerative Medicine
• Tissue Engineering
• Immunology

Background:

• The spleen is vital for immune function, and its absence or dysfunction leads to increased susceptibility to infections, thromboembolism, and cancer.
• Current spleen-preserving surgical techniques have limitations, with high morbidity and mortality rates persisting.
• Developing functional bioengineered spleens is crucial for addressing these clinical challenges.

Purpose of the Study:

• To create a viable splenic scaffold using decellularization for recellularization and potential transplantation.
• To evaluate the structural integrity and biocompatibility of the decellularized splenic matrix.
• To assess the potential of the scaffold for supporting cell adhesion, proliferation, and viability for spleen reconstruction.

Main Methods:

• Decellularization technique applied to spleen tissue to create a biological scaffold.
• Assessment of structural components (white pulp, red pulp, vascular network) and matrix preservation.
• Evaluation of residual DNA and SDS to minimize immunogenicity.
• Partial recellularization of the scaffold with neonatal rat spleen stromal cells.

Main Results:

• The decellularized scaffold preserved key splenic structural components and vascular networks.
• Minimal residual DNA and SDS were detected, crucial for reducing immune rejection.
• Approximately 72% of matrisomal protein content was retained, indicating matrix integrity.
• Recellularization demonstrated successful cell adhesion, proliferation, and viability on the scaffold.

Conclusions:

• The developed splenic scaffold is a promising foundation for spleen reconstruction and bioengineered spleen transplantation.
• This approach holds potential for complete recovery of splenic function in future clinical applications.
• Further research into complete recellularization and functional assessment is warranted.