Yonsei Med J.  2002 Oct;43(5):657-664. 10.3349/ymj.2002.43.5.657.

Expression Patterns of Cytokines and Chemokines Genes in Human Hepatoma Cells

Affiliations
  • 1Department of Microbiology, Yonsei University College of Medicine, Seoul, Korea. jhpark5277@yumc.yonsei.ac.kr
  • 2Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea.
  • 3Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.

Abstract

Various cytokines and chemokines play a role in carcinogenesis. However, no study has previously been undertaken to investigate comprehensively the expressions of cytokines and chemokines in hepatoma cells. In this study, we determined which cytokines and chemokines are expressed in hepatoma cells. Recently, it was reported that the expressions of several chemokines could be increased by Fas stimulus in many normal and cancer cells. Therefore, we also investigated whether chemokines expression is regulated by Fas ligation. To address this issue, we performed RNase protection assays upon 13 cytokines and 8 chemokines genes in 10 human hepatoma cell lines, comprising 8 hepatitis B virus (HBV)-associated hepatoma cell lines. Transforming growth factor-beta2 (TGF-beta2) was found to be expressed in 8 HBV-associated hepatoma cell lines, and to be potently expressed in 5 cell lines; however, the mRNA expressions of interleukin-10 (IL-10), IL-12, interferon-gamma(IFN-gamma) and tumor necrosis factor-alpha(TNF-alpha) were not detected in any cell lines examined. Among the chemokines investigated in this study, IL-8 was expressed by 8 HBV- associated hepatoma cell lines, and monocyte chemoattractant protein-1 (MCP-1) by 7 HBV-associated hepatoma cell lines. However, the mRNA expressions of macrophage inflammatory protein-1alpha (MIP-1alpha), MIP-beta, interferon-inducible protein-10 (IP-10), RANTES, lymphotactin and I-309 were either very weak or undetectable. Fas ligation did not increase chemokines expression in hepatoma cells. Conclusively, TGF-beta2, IL-8 and MCP-1 were overexpressed in HBV-associated hepatoma cells, and the expressions of chemokines were not increased by Fas ligation in human hepatoma cells.

Keyword

Hepatoma; cytokine; chemokine; TGF-beta; interleukin-8; MCP-1; Fas

MeSH Terms

Antigens, CD95/physiology
Carcinoma, Hepatocellular/*metabolism
Chemokines/*genetics
Cytokines/*genetics
Gene Expression Profiling
Human
Liver Neoplasms/*metabolism
RNA, Messenger/analysis
Tumor Cells, Cultured
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