Different colony-stimulating factors are detected by the "interleukin-3"-dependent cell lines FDC-Pl and 32D cl-23

A J Hapel, H S Warren, D A Hume

Research output: Contribution to journalArticlepeer-review


The cell lines FDC-Pl and 32D cl-23 have previously been used as unique indicators for the growth-promoting activity of interleukin-3. We show that FDC-Pl cells respond to granulocyte/macrophage colony-stimulating factor (GM-CSF, CSF-2) as well as to interleukin-3. In keeping with this finding, FDC-Pl cells express the macrophage-specific marker, F4/80. FDC-Pl cells do not, however, respond to macrophage CSF (M-CSF, CSF-1). In contrast, 32D cl-23 cells do not respond to GM-CSF and lack F4/80. Instead, 32D cl-23 cells respond to an as yet undefined factor in conditioned medium (CM) from the primate T cell line, MLA-144, and CM from mitogen-stimulated human lymphocytes (HLCM). 32D cl-23 cells are Lyt-1+. Both FDC-Pl and 32D cl-23 cells consume interleukin-3, but only FDC Pl cells consume GM-CSF. Similarly, 32D cl-23, but not FDC-Pl, cells consume 32D cl-23 growth factor from MLA-144 CM and HLCM. Interleukin-3-dependent cell lines must therefore concurrently express different functional cell surface receptors for a variety of biochemically distinct growth factors.
Original languageEnglish
Pages (from-to)786-90
Number of pages5
Issue number4
Publication statusPublished - Oct 1984


  • Antibodies, Monoclonal
  • Cell Line
  • Colony-Stimulating Factors
  • Growth Substances
  • Humans
  • Interleukin-3
  • Lymphokines
  • Phenotype

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