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  • Title: Radial flow bioreactor for the creation of bioartificial liver and kidney.
    Author: Iwahori T, Matsuno N, Johjima Y, Konno O, Akashi I, Nakamura Y, Hama K, Iwamoto H, Uchiyama M, Ashizawa T, Nagao T.
    Journal: Transplant Proc; 2005; 37(1):212-4. PubMed ID: 15808597.
    Abstract:
    A radial flow bioreactor (RFB) is used for a three-dimensional perfusion culture of hepatocellular carcinoma (HCC) cells and renal cells, to create a bioartificial liver and kidney. The cylindrical reactor is filled with porous cellulose microcarrier. RFB can be characterized as a system in which the medium flows from the periphery toward the center of the reactor, thereby delivering an adequate supply of oxygen and nutrients to cells at the center as well as at the periphery. HCC cells incubated in the RFB system at high density maintained viability for long periods of time. Proximal tubular cells (LLC-PK1) as well as HCC cells, but not human immortalized mesangial cells (HMC) were cultured in the RFB for more than 14 days. The mRNA expression of some enzymes involved in the urea cycle, cytochrome P450s in HCC cells, and the 1-alpha-hydroxylase (CYP27B1) in LLC-PK1 cells was higher than that in monolayer cultures. These results suggest that the RFB system composed of HCC cells or renal cells may be useful for a bioartificial liver and kidney.
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