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Updated: Aug 11, 2026
09:49
Induction and Assessment of Class Switch Recombination in Purified Murine B Cells
Published on: August 13, 2010
Immunoglobulin synthesis and its induction in B-lymphoid cells
Acta Endocrinologica. Supplementum
|January 1, 1975
Summary
B-lymphocytes mature into antibody-secreting plasma cells through a process involving cell division and immunoglobulin (Ig) synthesis. A translational block on heavy-chain mRNA (H-mRNA) delays Ig production until the cell matures.
Area of Science:
- Immunology
- Molecular Biology
- Cell Biology
Background:
- Small lymphocytes differentiate into plasma cells that secrete high levels of immunoglobulin (Ig).
- Understanding the molecular mechanisms of B-cell maturation is crucial for immunology.
Purpose of the Study:
- To analyze the molecular events during the conversion of lymphocytes to mature, Ig-secreting plasma cells.
- To investigate the regulation of immunoglobulin synthesis and B-cell maturation.
Main Methods:
- Utilized lipopolysaccharide (LPS) activation of murine B-lymphocytes as a model system.
- Examined cell division (mitosis) and heavy-chain messenger RNA (H-mRNA) synthesis rates.
- Investigated the timing of Ig production relative to cellular maturation and endoplasmic reticulum organization.
Main Results:
- High rates of mitosis and H-mRNA synthesis preceded high-level Ig production.
- A translational block on H-mRNA was suggested, releasing only after cellular maturation.
- B-cell maturation is not always a direct consequence of division stimuli in vivo, except for T-independent antigens.
Conclusions:
- B-cell maturation involves a regulated translational block of H-mRNA, ensuring Ig production aligns with cellular readiness.
- Regulatory signals likely control the dissociation between B-cell division and maturation, a process not fully understood.
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