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Colony stimulating factor in human mixed leukocyte cultures
Stem Cells
|January 1, 1982
Summary
Human peripheral mononuclear cells cultured in mixed leukocyte cultures (MLC) produce colony-stimulating factor (CSF). This study identifies optimal conditions for CSF production and highlights its potential as a source for granulocyte and macrophage proliferation.
Area of Science:
- Immunology
- Hematology
Background:
- Colony-stimulating factor (CSF) is crucial for granulocyte and macrophage proliferation and differentiation.
- Understanding the relationship between immune reactivity and CSF production is vital for immunological research.
Purpose of the Study:
- To investigate the production of CSF from human peripheral mononuclear cells using mixed leukocyte cultures (MLC).
- To determine optimal conditions for CSF production and assess its characteristics.
Main Methods:
- Human peripheral mononuclear cells were cultured in two-way mixed leukocyte cultures (MLC).
- CSF levels in the supernatant were measured over 9 days of incubation.
- Optimal cell concentrations for MLC were determined.
- Species specificity of MLC-CSF was evaluated.
Main Results:
- CSF levels in MLC supernatant peaked at day 7 and then declined.
- Optimal cell concentration for CSF production was 1-2 x 10^6 cells/ml.
- CSF activity decreased at higher cell concentrations (4 x 10^6 cells/ml).
- MLC-CSF demonstrated cross-species activity, stimulating both human and mouse CFU-c.
Conclusions:
- MLC-conditioned medium (MLC-CM) is a potential source of CSF.
- MLC-CSF production is dependent on cell concentration and incubation time.
- MLC-CSF exhibits non-species-specific activity, suggesting broad applicability.