IL-18 increases invasiveness of HL-60 myeloid leukemia cells: Up-regulation of matrix metalloproteinases-9 (MMP-9) expression

Bin Zhang, Ke Fu Wu*, Zhen Yu Cao, Qing Rao, Xiao Tong Ma, Guo Guang Zheng, Ge Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

Similar to matrix metalloproteinases (MMP-9/-2), IL-18 was overexpressed in some hematologic malignancies such as acute myeloid leukemia (AML), which is associated with a poor clinical outcome. To establish a possible functional relationship between IL-18 and MMPs in myeloid leukemia, we used semi-quantitative PCR and zymographic analysis to examine whether IL-18 stimulates human myeloid leukemia cell line HL-60 to produce MMPs and/or specific tissue inhibitors (TIMPs), and to degrade extracellular matrix (ECM) gel in vitro. In the ECM invasion assay IL-18 significantly up-regulated transmigration of HL-60 cells, which in turn was inhibited by a synthetic MMP inhibitor: O-phenanthroline (o-PE), anti-MMP-9, anti-MMP-2 as well as anti-IL-18 monoclonal antibody (McAb), respectively, suggesting that induction of gelatinases by IL-18 leads to ECM degradation by these cells. Moreover, IL-18 could significantly increase MMP-9 but not MMP-2 production at both mRNA and/or protein level, slightly up-regulate TIMP-1 mRNA, and clearly induce TIMP-2 mRNA secretion. We postulate that IL-18 may in part play a role in the clinical aggressiveness of human myeloid leukemia by stimulating MMP-9 production.

Original languageEnglish (US)
Pages (from-to)91-95
Number of pages5
JournalLeukemia Research
Volume28
Issue number1
DOIs
StatePublished - Jan 1 2004

Keywords

  • HL-60
  • IL-18
  • Invasion
  • Matrix metalloproteinase-9

ASJC Scopus subject areas

  • Hematology
  • Oncology
  • Cancer Research

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