Published in:
01-07-2013 | Original Article
Transdifferentiation of human fibroblasts into hepatocyte-like cells by defined transcriptional factors
Authors:
Tomomi Kogiso, Hikaru Nagahara, Motoyuki Otsuka, Keiko Shiratori, Steven F. Dowdy
Published in:
Hepatology International
|
Issue 3/2013
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Abstract
Purpose
Liver transplantation is currently the only curative therapeutic option for end-stage liver cirrhosis. However, due to the limitations of donor liver availability and occasional rejection, it cannot always be successfully applied. In this study, we determined whether fibroblasts can be transdifferentiated into hepatocyte-like cells by transcription factors that initiate and maintain hepatocyte differentiation.
Methods
Fibroblasts were transduced with retrovirus vectors carrying FOXA2, HNF4α, and C/EBPβ. To enhance the efficiency of transdifferentiation, cMyc was also expressed.
Results
Transdifferentiation was successful using both neonatal fibroblasts and human forehead fibroblasts. The transdifferentiated cells produced hepatocyte-specific proteins such as albumin and cytochrome, and had important hepatocyte-specific functions, such as glycogen storage and indocyanine green uptake, suggesting that the cells function at least as partial hepatocytes.
Conclusions
These results provide a novel method of generating differentiated hepatocyte-like cells, and may represent an alternative source of cells for future cell-based therapeutics for end-stage liver diseases.