Stephen Galli

Publication Details

  • EFFECTS OF INTERLEUKIN-3 WITH OR WITHOUT THE C-KIT LIGAND, STEM-CELL FACTOR, ON THE SURVIVAL AND CYTOPLASMIC GRANULE FORMATION OF MOUSE BASOPHILS AND MAST-CELLS IN-VITRO AMERICAN JOURNAL OF PATHOLOGY Dvorak, A. M., SEDER, R. A., PAUL, W. E., Morgan, E. S., GALLI, S. J. 1994; 144 (1): 160-170

    Abstract:

    We assessed the ultrastructure and the cell-surface expression of receptors for immunoglobulin E (Fc epsilon R), and c-kit, the receptor for stem cell factor (SCF), in mouse basophils and mast cells present in short-term cultures of mouse bone marrow cells in interleukin-3 (IL-3) with or without SCF. Basophils did not develop increased numbers of cytoplasmic granules and underwent apoptosis in cultures containing IL-3 and SCF, whereas mast cells thrived and developed increased numbers of granules. Basophils were nearly all Fc epsilon R+ c-kit- when sorted after culture in IL-3 and SCF; most mast cells were Fc epsilon R+ c-kit+. However, a second population of Fc epsilon R+ c-kit- mast cells was present after culture in IL-3 and SCF. These c-kit receptor-negative mast cells were less mature than c-kit+ mast cells and contained significantly fewer cytoplasmic granules than the c-kit+ mast cells present in the same cultures (P < 0.001). Thus, mouse basophils express little or no c-kit receptor on their surface, nor can they survive for long periods in SCF-supplemented cultures. By contrast, mouse mast cells seem to express the Fc epsilon R early in their development, even before they express detectable c-kit receptors on their surface. IL-3 promotes cytoplasmic granule formation in immature mast cells, but even more granules are formed when c-kit receptor-positive immature mast cells are cultured in both SCF and IL-3.

    View details for Web of Science ID A1994MR31000017

    View details for PubMedID 7507298

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