A novel decellularization method using sonication treatment is described. Sonication treatment is the combination of physical and chemical agents. These methods will disrupt cell membrane and release cell contents to external environments. The cell removal was facilitated by subsequent rinsing of sodium dodecyl sulfate detergents. Sonication treatment is used in the preparation of complete decellularized bioscaffolds. The aim of this study is to confirm the usefulness of sonication treatment for preparation of biological scaffolds. In this study, samples of aortic tissues are decellularized by sonication treatment at frequency of 170 kHz in 0.1% and 2% sodium dodecyl sulfate detergents for 10-h treatment time. The relation between decellularization and sonication parameters such as dissolved oxygen concentration, conductivity, and pH is investigated. Histological analysis and biomechanical testing is performed to evaluate cell removal efficiency as well as changes in biomechanical properties. Minimal inflammation response elicit by bioscaffolds is confirmed by xenogeneic implantation and immunohistochemistry. Sonication treatment is able to produce complete decellularized tissue suggesting that these treatments could be applied widely as one of the decellularization method.

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A novel sonication decellularization system is developed to prepare complete decellularized tissue. The objective of the study is to determine the influence of acoustic intensity on sonication parameter and decellularization using sonication treatment. The distribution of acoustic intensity for sonication treatment is first demonstrated by simulation followed by experimental measurement. The relation of acoustic intensity with sonication parameter on decellularization is further investigated. The effect of acoustic intensity on decellularization is evaluated by measuring the residual cell in tissue sample using Hematoxylin-Eosin staining. The simulation shows low residual cells upon high acoustic intensity. From the result, acoustic intensity shows positive correlation with dissolved oxygen concentration and pH and negative correlation with conductivity. The present study concludes that decellularization performed by sonication treatment is dependent on acoustic intensity.

Abstract-Sonication treatment is used in the preparation of bioscaffolds that was able to support repopulation of vascular smooth muscle cells (VSMCs) upon cell-seeding. The aim of this study is to investigate the ability of sonicatedly decellularized tissue to repopulate VSMCs after 6 days of cell-seeding. In this study, sample of aorta tissues are decellularized by sonication treatment in 0.1% and 2% sodium dodecyl sulfate (SDS) detergent for 10 hours. It was followed by washing process with PBS solution for 5 days.