Digestive Diseases and Sciences

, Volume 52, Issue 10, pp 2591–2600

Gene Expression Profile Analysis of the Spontaneous Reversal of Rat Hepatic Fibrosis by cDNA Microarray

  • Qin Pan
  • Zhong-Bing Zhang
  • Xin Zhang
  • Jian Shi
  • Yue-Xiang Chen
  • Ze-Guang Han
  • Wei-Fen Xie
Original Article

DOI: 10.1007/s10620-006-9676-1

Cite this article as:
Pan, Q., Zhang, ZB., Zhang, X. et al. Dig Dis Sci (2007) 52: 2591. doi:10.1007/s10620-006-9676-1

Abstract

Our aim was to gain insight into the gene expression profile during hepatic fibrosis autoreversal. Spontaneous recovery from hepatic fibrosis was created in SD rats by CCl4 exposure for 8 weeks and then withdrawal for 6 weeks. Then differentially expressed genes during regression of fibrosis were analyzed using cDNA microarray. Results obtained were further subjected to hierarchical clustering and validated by semiquantitative RT-PCR. Expression of Mapk1 and Rps6ka1, which are critical members of the mitogen-activated protein kinase (MAPK) signaling pathway, was also investigated by Northern blot and immunohistochemistry. Microarray hybridization identified 254 genes differentially expressed throughout resolution of fibrosis. Being verified by RT-PCR, up- or down-regulated genes were classified into various groups according to clustering and function: (1) metabolic enzymes, (2) facilitated diffusion proteins/transporters/symporters, (3) gastrointestinal hormones/receptors, (4) lipoproteins/fatty acid binding proteins, (5) transcription factors/nuclear factors, and (6) the MAPK signaling pathway. The mRNA level of Mapk1 increased greatly as hepatic fibrosis reversed. Meanwhile Mapk1 and Rps6ka1 were proven to be expressed in hepatocytes and absent from mesenchymal cells. Six groups of genes exhibit a close relation to the recovery of CCl4-induced hepatic fibrosis. The MAPK signaling-dependent pathway, representing one of the gene groups, may contribute to the reversal of hepatic fibrosis.

Keywords

Macroarray Rat Hepatic fibrosis Mitogen-activated protein kinase S6 protein kinase 

Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  • Qin Pan
    • 1
  • Zhong-Bing Zhang
    • 1
  • Xin Zhang
    • 2
  • Jian Shi
    • 1
  • Yue-Xiang Chen
    • 1
  • Ze-Guang Han
    • 2
  • Wei-Fen Xie
    • 1
  1. 1.Department of GastroenterologyChangzheng Hospital, Second Military Medical UniversityShanghai 200003P.R.C.
  2. 2.Chinese National Human Genome Center at ShanghaiShanghai 201203P.R.C.