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Development of Bioengineered Organ Using Biological Acellular Rat Liver Scaffold and Hepatocytes

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Journal Organogenesis
Date 2020 May 5
PMID 32362216
Citations 14
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Abstract

The increasing demand for organs for transplantation necessitates the development of substitutes to meet the structural and physiological functions. Tissue decellularization and recellularization aids in retaining the three-dimensional integrity, biochemical composition, tissue ultra-structure, and mechanical behavior, which makes them functionally suitable for organ transplantation. Herein, we attempted to rebuild functional liver grafts in small animal model (Wistar rat) with a potential of translation. A soft approach was adopted using 0.1% SDS (Sodium Dodecyl Sulfate) for decellularization and primary hepatocytes were used as a potential cell source for recellularization. The decellularization process was evaluated and confirmed using histology, DNA content, ultra-structure analysis. The resultant scaffold was re-seeded with the rat hepatocytes and their biocompatibility was assessed by its metabolic functions and gene expression. The structural components of the Extracellular matrix (ECM) (Laminins, Collagen type I, Reticulins) were conserved and the liver cell-specific proteins like CK-18, alpha-fetoprotein, albumin were expressed in the recellularized scaffold. The functionality and metabolic activity of the repopulated scaffold were evident from the albumin and urea production. Expression of Cytokeratin-19 (CK-19), Glucose 6-Phosphatase (G6P), Albumin, Gamma Glutamyl Transferase (GGT) genes has distinctly confirmed the translational signals after the repopulation process. Our study clearly elucidates that the native extracellular matrix of rat liver can be utilized as a scaffold for effective recellularization for whole organ regeneration.

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