Abstract:
:Bone marrow mesenchymal stem cells (MSCs) are promising candidates for cell therapy and tissue engineering. We used mesenchymal stem cells from human bone marrow (hMSCs) as the seeding cells to investigate the potential of hepatocytic differentiation of hMSCs in porous polylactic glycolic acid (PLGA) scaffolds under perfusion induction. hMSCs were seeded and proliferated in PLGA scaffolds, and then induced into hepatocyte-like cells with hepatogenic medium in perfusion and static cultures. The results showed that hMSCs could be induced into hepatocyte-like cells in PLGA scaffolds with hepatogenic medium in both static and perfusion induction systems. However, perfusion induction was more effective for cellularity in PLGA scaffolds than in static induction. Cells in the scaffold induced by the hepatogenic medium expressed hepatocyte-specific genes cytokeratin 19 (CK19), α-fetoprotein (αFP), cytokeratin 18 (CK18), albumin and cytochrome P4503A4 (CYP3A4) in a time-dependent manner. Induced cells stained positive for αFP and albumin. Induced cells also acquired the functional characteristics of hepatocytes, i.e. secretion of urea and albumin. In a comparison of survival and hepatogenic differentiation of hMSCs between perfusion and static induction, perfusion induction increased the survival and the uniform distribution of induced cells in scaffolds, which resulted in a higher efficiency of hepatogenesis in the PLGA construct with hMSCs. The oscillatory perfusion induction system combined with the hepatogenic medium should be a valuable and convenient tool for in vitro hepatic tissue engineering using hMSCs.
journal_name
J Tissue Eng Regen Medjournal_title
Journal of tissue engineering and regenerative medicineauthors
Wang J,Zong C,Shi D,Wang W,Shen D,Liu L,Tong X,Zheng Q,Gao Cdoi
10.1002/term.393subject
Has Abstractpub_date
2012-01-01 00:00:00pages
29-39issue
1eissn
1932-6254issn
1932-7005journal_volume
6pub_type
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