PMID: 12775234May 31, 2003Paper

Expression and significance of IL-18 in the bone marrow of patients with hematological diseases

Chinese Medical Journal
Bin ZhangKefu Wu

Abstract

To investigate the levels of IL-18 in the bone marrow of both normal subjects and patients with hematological diseases and to determine the possible significance of IL-18 in pathogenesis of some hematological malignancies. The IL-18 mRNA levels in the bone marrow of 140 patients with hematological diseases and 15 normal donors were determined by the semi-quantitative reverse transcriptase polymerase chain reaction (RT-PCR). Immunohistochemical method was used to detect IL-18 protein in 12 patients with acute myeloid leukemia (AML). The possible regulation of IL-18 for proliferation of some leukemia cells was investigated using antisense techniques. IL-18 mRNA levels were obviously higher in the patients with leukemia or other malignant hematological diseases (OMHD) than in normal donors. However, no significant difference was found in the level of transcription between patients with iron deficiency anemia (IDA) and normal controls. Immunohistochemical method confirmed the presence of IL-18 protein in 10 out of 12 AML cases with positive transcription. By 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay, IL-18 antisense oligodeoxynucleotides (ASON) clearly inhibited the growth of J6-1 and HL-60 cells (42...Continue Reading

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