Untersuchungen über die wirkung von tumornekrosefaktor auf humane hamatopoetische vorläuferzellen

B. Völkers, A. Ganser, J. Greher, C. Carlo Stella, D. Hoelzer

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of human recombinant tumor necrosis factor (rhTNF-alpha) on the in vitro colony growth of normal hematopoietic progenitor cells was investigated. In a clonal colony-assay a dose-dependent inhibition of erythroid BFU-E. granulocyte/monocyte CFU-GM and megakaryocyte CFU-Mk was demonstrated. CFU-Mk were completely inhibited by low doses of TNF-alpha (3 U-300 U/ml). 50% inhibition occurred at 10 U/ml of TNF for CFU-Mk, 100% inhibition at 300 U/ml of TNF. 50% inhibition occured at 233 U/ml of TNF for CFU-GM, and 100% inhibition for CFU-GM was not observed. For inhibition of BFU-E higher doses of TNF-alpha were neccessary (100 U-1,000 U/ml). The growth inhibitory effect could selectively be abolished by antibodies against TNF-alpha. Removal of adherent cells and T-lymphocytes from the bone marrow cells had no significant influence of the suppressive effect of TNF-alpha. The inhibitory effect of TNF-alpha is due to a direct action on hematopoietic progenitor cells and not mediated by accessory cells.

Original languageGerman
Pages (from-to)109-115
Number of pages7
JournalOncology Research and Treatment
Volume12
Issue number3
DOIs
Publication statusPublished - 1989

Keywords

  • BFU-E
  • CFU
  • CFU-Mk
  • GM
  • Human hematopoietic progenitor cells
  • Recombinant human tumor necrosis factor (rhTNF-alpha)

ASJC Scopus subject areas

  • Cancer Research
  • Hematology
  • Oncology

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