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Proliferation and Differentiation of Murine Myeloid Precursor 32D/G-CSF-R Cells
Published on: February 21, 2018
Deregulated c-fos modulates B cell responses to switch mediators
1Department of Immunology, ICMR, Kobe University School of Medicine, Japan.
Cellular Immunology
|June 1, 1993
Summary
Deregulated c-fos expression in B cells enhances proliferation but impairs antibody production at high LPS concentrations. This suggests c-fos impacts B cell differentiation and function.
Area of Science:
- Immunology
- Molecular Biology
- Cell Biology
Background:
- c-fos is a proto-oncogene involved in cell proliferation and differentiation.
- B cells are crucial for adaptive immunity, producing antibodies.
- Dysregulation of c-fos may impact B cell function.
Purpose of the Study:
- To investigate the role of deregulated c-fos in B cell proliferation and differentiation.
- To analyze the effects of c-fos on B cell responses to lipopolysaccharide (LPS) and interleukin-4 (IL-4).
Main Methods:
- Utilized splenic B cells from H2-c-fos transgenic mice.
- Cultured B cells with lipopolysaccharide (LPS) and recombinant interleukin-4 (rIL-4).
- Assessed B cell proliferation and IgG1 production in vitro.
Main Results:
- Augmented B cell proliferation was observed across all LPS doses.
- Increased IgG1 production occurred at lower LPS concentrations (< 2.5 µg/ml).
- Impaired IgG1 production at higher LPS concentrations (> 5 µg/ml) was linked to disrupted differentiation into antibody-forming cells.
Conclusions:
- Deregulated c-fos expression modulates B cell proliferation and differentiation.
- c-fos plays a complex role in B cell responses to LPS and IL-4 stimulation.
- Perturbation of B cell differentiation by c-fos affects antibody production.
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