Related Experiment Videos
In vitro development and functions of human mast cells
T Ishizaka1, T Furitsu, N Inagaki
1La Jolla Institute for Allergy and Immunology, Calif.
International Archives of Allergy and Applied Immunology
|January 1, 1991
Summary
Human umbilical cord blood cells can develop into mature mast cells in vitro using 3T3 fibroblast co-culture. These cultured mast cells release histamine and mediators upon stimulation, offering a model for studying mast cell function.
Area of Science:
- Immunology
- Cell Biology
- Hematology
Background:
- Human mast cells are crucial immune cells involved in allergic responses and inflammation.
- Generating mature human mast cells in vitro is essential for research but has been challenging.
Purpose of the Study:
- To establish a reliable in vitro method for differentiating human mast cells from cord blood progenitors.
- To characterize the morphology, function, and mediator release of these newly developed mast cells.
Main Methods:
- Co-culture of human umbilical cord blood mononuclear cells with 3T3 fibroblasts.
- Analysis of mast cell morphology via electron microscopy.
- Functional assays measuring histamine and eicosanoid release upon stimulation.
Main Results:
- Developed morphologically and functionally mature human mast cells containing histamine and Fc epsilon RI receptors.
- Mast cells released histamine in response to anti-IgE, A23187, and substance P.
- Cultured mast cells produced prostaglandin D2 (PGD2) and leukotriene C4 (LTC4) upon anti-IgE challenge.
Conclusions:
- 3T3 fibroblasts provide essential soluble factors for human mast cell differentiation in vitro.
- This co-culture system provides a valuable model for studying human mast cell biology and allergic diseases.