Proliferation and differentiation of murine haemopoietic progenitor cells in stroma-free culture in the presence of metabolites of chlorinated pesticides.
Affiliation
Institute of Transfusion Medicine and Immune Haematology, Sandhofstrasse 1, D-60528 Frankfurt, Germany. thenschler@bsdhessen.deIssue Date
2001-02
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We have studied the influence of metabolites of chlorinated pesticides (lindane, pentachlorophenol, hexachlorobenzene) on proliferation and differentiation in two stroma-free murine bone marrow culture models, a multipotent progenitor cell line (FDCP-mix) and primary lineage-depleted bone marrow cells. Tetrachlorohydroquinone (Cl(4)pHQ), tetrachloro-p-benzoquinone (Cl(4p)BQ), but not their positional isomers, tetrachlorocatechol (Cl(4)oHQ) and tetrachloro-o-benzoquinone (Cl(4)oBQ), nor 2,4,6-trichlorophenol (2,4,6-Cl(3)P), were much more toxic to FDCP-mix cells cultured under conditions which lead to self-renewal than under conditions which lead to granulocyte-macrophage differentiation. Under the latter conditions, Cl(4)pHQ and Cl(4p)BQ even stimulated growth at intermediate concentration levels. In the primary cell cultures, pronounced differences were observed in the sensitivity between individual developmental pathways and between the different compounds. The percent of cells differentiating into the granulocytic lineage was increased at high concentration levels of each test compound. However, stimulatory effects on the macrophage lineage were observed at intermediate concentration levels of Cl(4)pHQ, Cl(4p)BQ and 2,4,6-Cl(3)P, and differentiation into erythrocytes was stimulated at low concentrations of 2,4,6-Cl(3)P. It is concluded that chlorinated monocyclic pesticides, after biotransformation to quinoid metabolites, may interact directly with haemopoietic progenitor cells with differential effects on self-renewal and differentiation. These mechanisms could lead to myeloplastic disorders.Citation
Proliferation and differentiation of murine haemopoietic progenitor cells in stroma-free culture in the presence of metabolites of chlorinated pesticides. 2001, 15 (1):31-7 Toxicol In VitroJournal
Toxicology In VitroPubMed ID
11259867Type
ArticleLanguage
enISSN
0887-2333Collections
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