Coculture of interleukin 3-dependent mouse mast cells with fibroblasts results in a phenotypic change of the mast cells - PubMed (original) (raw)

Coculture of interleukin 3-dependent mouse mast cells with fibroblasts results in a phenotypic change of the mast cells

F Levi-Schaffer et al. Proc Natl Acad Sci U S A. 1986 Sep.

Erratum in

Abstract

The heparin-containing mast cells that reside in the connective tissue of the mouse, but not the chondroitin sulfate-containing mast cells in the gastrointestinal mucosa, stain with safranin when exposed to alcian blue/safranin. Mouse bone marrow-derived mast cells (BMMC), the probable in vitro counterparts of in vivo mucosal mast cells, were cultured for 14 days with mouse skin-derived 3T3 fibroblasts in RPMI 1640 medium containing 10% fetal calf serum and 50% WEHI-3 conditioned medium. Although the BMMC adhered to the fibroblast monolayer, they continued to divide, probably due to the presence of interleukin 3 in the conditioned medium. The mast cells remained viable throughout the period of coculture, since they failed to release lactate dehydrogenase and because they increased their histamine content approximately 15-fold. After 12-14 days of coculture, greater than 50% of the BMMC changed histochemically to become safranin+; 30-40% of the 35S-labeled glycosaminoglycans on the proteoglycans synthesized by these cocultured mast cells were heparin, whereas heparin was not detected in the initial BMMC. In the absence of WEHI-3 conditioned medium, BMMC adhered to the fibroblast monolayer, and after 8 days of coculture, the number of mast cells did not change and their histamine content remained the same. However, these mast cells also became safranin+ and synthesized 40% heparin glycosaminoglycans. Thus, coculture of BMMC with fibroblasts induces a phenotypic change so that the resulting mast cells stain safranin+ and synthesize heparin proteoglycans, whereas the presence of WEHI-3 conditioned medium stimulates proliferation and an increase in histamine content.

PubMed Disclaimer

Similar articles

Cited by

References

    1. J Immunol. 1981 Aug;127(2):788-94 - PubMed
    1. Proc Natl Acad Sci U S A. 1981 Apr;78(4):2559-61 - PubMed
    1. Immunology. 1982 Feb;45(2):371-80 - PubMed
    1. J Biol Chem. 1982 Jun 25;257(12):7229-36 - PubMed
    1. J Biol Chem. 1982 Aug 10;257(15):8661-6 - PubMed

Publication types

MeSH terms

Substances

LinkOut - more resources