Biocompatibility of rat’s nature decellularized pancreatic biological scaffolds

doi:10.3969/j.issn.0529-1356.2014.04.022

Abstract

Abstract:

Objective To harvest pancreatic tissues from rats, prepare decellularized bio-derived pancreatic scaffolds (DBPS), and to examine the integrity and biocompatibility of the scaffolds. Methods Normal pancreases were harvested from healthy adult SD rats. DBPS was prepared by perfusing SDS and Triton X-100 through bile duct and the portal vein, respectively. After decellularization, normal pancreatic tissue and DBPS were compared via HE staining, and transmission electron microscopy (TEM). Abdominal wall and subcutaneous implantations were used to compare biocompatibility, and the remain quantity of residual protein and growth factors were determined via enzyme linked immunosorbent assay（ELISA）. MTT assay was used to test the scaffolds’ cytotoxicity. The scaffolds were co-cultured with endotheliocyte. Results HE staining and TEM study indicated no residual cells in the DBPS as well as preservation of the complete extracellular matrix. The remain quantity of residual protein and growth factors in ECM was high. The abdominal wall and subcutaneous implantation revealed that DBPS triggered a lower immune response as compared to the control group. MTT assay showed little cytotoxicity. Endotheliocyte assembled and growed with the scaffolds together.
Conclusion DBPS are completely decellularized, and exhibit a higher level of biocompatibility in vivo. Using the way of vessels can make the integrity of extracellular matrix to be fully preserves and contain more growth factors. So using vessels way is better than bile duct.

Key words: Decellularization, Pancreas, Extracellular matrix, Biocompatibility, Tissue engineering, Rat

SHAO Ying-kuan YAN Xia-lin RAO Zhi-heng HUANG Gao-jian LI Jia-wei HUANG Jun-jie MEI Jin* LIN Ke-zhi*. Biocompatibility of rat’s nature decellularized pancreatic biological scaffolds[J]. AAS, 2014, 45(4): 561-568.

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