Altered expression of genes involved in hepatic morphogenesis and fibrogenesis are identified by cDNA microarray analysis in biliary atresia
Article first published online: 30 DEC 2003
Copyright © 2003 American Association for the Study of Liver Diseases
Volume 38, Issue 3, pages 567–576, September 2003
How to Cite
Chen, L., Goryachev, A., Sun, J., Kim, P., Zhang, H., Phillips, M. J., Macgregor, P., Lebel, S., Edwards, A. M., Cao, Q. and Furuya, K. N. (2003), Altered expression of genes involved in hepatic morphogenesis and fibrogenesis are identified by cDNA microarray analysis in biliary atresia. Hepatology, 38: 567–576. doi: 10.1053/jhep.2003.50363
- Issue published online: 30 DEC 2003
- Article first published online: 30 DEC 2003
- Manuscript Accepted: 11 JUN 2003
- Manuscript Received: 19 DEC 2002
- Supported in part by a University Research Council Research grant (University of North Carolina) and by an operating grant from the National Cancer Institute of Canada (to K.N.F.) and the Medical Research Council of Canada (to K.N.F.).
Biliary atresia (BA) is characterized by a progressive, sclerosing, inflammatory process that leads to cirrhosis in infancy. Although it is the most common indication for liver transplantation in early childhood, little is known about its etiopathogenesis. To elucidate factors involved in this process, we performed comprehensive genome-wide gene expression analysis using complementary DNA (cDNA) microarrays. We compared messenger RNA expression levels of approximately 18,000 human genes from normal, diseased control, and end-stage BA livers. Reverse-transcription polymerase chain reaction (RT-PCR) and Northern blot analysis were performed to confirm changes in gene expression. Cluster and principal component analysis showed that all BA samples clustered together, forming a distinct group well separated from normal and diseased controls. We further identified 35 genes and ESTs whose expression differentiated BA from normal and diseased controls. Most of these genes are known to be associated with cell signaling, transcription regulation, hepatic development, morphogenesis, and fibrogenesis. In conclusion, this study serves to delineate processes that are involved in the pathogenesis of BA.