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Human basophilic cell differentiation promoted by 2.5S nerve growth factor
H Matsuda1, J Switzer, M D Coughlin
1Department of Pathology, McMaster University, Hamilton, Ont., Canada.
International Archives of Allergy and Applied Immunology
|January 1, 1988
Summary
Nerve growth factor (NGF) stimulates T-lymphocyte-dependent basophil differentiation from human cord blood cells. This finding suggests NGF may support basophil and mast cell development in allergic inflammation.
Area of Science:
- Immunology
- Cell Biology
- Hematology
Background:
- Nerve growth factor (NGF) is known for its role in neuronal development.
- The role of NGF in hematopoiesis and immune cell differentiation is less understood.
- Human cord blood mononuclear cells are a source of hematopoietic stem and progenitor cells.
Purpose of the Study:
- To investigate the activity of 2.5S nerve growth factor (NGF) in inducing basophil and eosinophil differentiation.
- To determine if NGF enhances differentiation stimulated by conditioned medium from a human T cell line (Mo-CM).
- To explore the dependence of NGF's activity on T lymphocytes.
Main Methods:
- Culturing human cord blood mononuclear cells with varying concentrations of purified 2.5S NGF.
- Co-culturing cells with NGF and Mo-CM, a T cell-derived conditioned medium.
- Assessing basophil and eosinophil differentiation and histamine synthesis after 2 weeks in vitro.
Main Results:
- NGF significantly increased basophil differentiation and histamine synthesis.
- NGF did not enhance eosinophil differentiation.
- NGF amplified Mo-CM-induced basophil differentiation, an effect dependent on T lymphocytes.
Conclusions:
- NGF promotes T-lymphocyte-dependent basophil differentiation from human cord blood progenitors.
- NGF may play a role in supporting basophil and mast cell differentiation in vivo.
- These findings suggest a potential role for NGF in allergic tissue inflammation.