RRC ID 41848
Author Fukuda J, Okamura K, Nakazawa K, Ijima H, Yamashita Y, Shimada M, Shirabe K, Tsujita E, Sugimachi K, Funatsu K.
Title Efficacy of a polyurethane foam/spheroid artificial liver by using human hepatoblastoma cell line (Hep G2).
Journal Cell Transplant
Abstract We invesigated the availability of human hepatoblastoma cell line (Hep G2), compared with human primary hepatocytes (HH) and porcine primary hepatocytes (PH), as a cell source for the hybrid artificial liver support system (HALSS) by using polyurethane foam (PUF). All three kinds of hepatocytes spontaneously formed spherical multicellular aggregates (spheroids) of 100-200 microm diameter in the pores of PUF within 3 days of culture. In a PUF stationary culture, Hep G2 spheroids recovered the ammonia removal activity that was lost in monolayer culture, although the removal for each unit cell number was about one tenth that of HH spheroids and about one eighth of PH spheroids. The synthesis activities of albumin and fibrinogen of each unit cell number of Hep G2 were also upregulated by PUF spheroid culture, and were about twice as high as in monolayer culture. The albumin secretion activity of Hep G2 spheroids was almost the same as that of PH spheroids. HH scarcely secreted these proteins in this experiment, probably because they were cultured in a serum-free medium. In the PUF module in a circulation culture, HH had high ammonia removal and low synthesis activities similar to stationary culture. Hep G2 proliferated to a high cell density, such as about 4.8 x 10(7) cells/cm3-module at 10 days of culture. Although Hep G2 spheroids had low ammonia removal activity in each cell, the removal rate in the PUF module was almost the same as for PH at 7 days of culture because of the high cell density culture by cell proliferation. The albumin secretion rate by Hep G2 in the PUF module also increased with cell proliferation and was about 10 times higher than the initial for the rate for PH at 7 days of culture. These results suggest that Hep G2 is a potential cell source PUF-HALSS.
Volume 12(1)
Pages 51-8
Published 2003-1-1
DOI 10.3727/000000003783985151
PMID 12693664
MeSH Albumins / metabolism Ammonia / metabolism Animals Artificial Organs* Cell Aggregation / physiology Cell Culture Techniques / methods* Cell Division / physiology Fibrinogen / metabolism Hepatoblastoma / metabolism* Hepatocytes / cytology Hepatocytes / metabolism Humans Polyurethanes / therapeutic use* Spheroids, Cellular / cytology Spheroids, Cellular / metabolism* Tumor Cells, Cultured / cytology Tumor Cells, Cultured / metabolism* Up-Regulation / physiology
IF 3.341
Times Cited 50
Human and Animal Cells Hep G2(RCB1648)