Related Experiment Videos
Immunoglobulin negative follicle centre cell lymphoma
British Journal of Cancer
|December 1, 1984
Summary
Immunoglobulin (Ig) was not detected in most neoplastic cells of follicle centre cell lymphoma, despite typical follicular histology. This challenges B cell differentiation models and suggests novel mechanisms for Ig expression failure.
Area of Science:
- Hematology
- Oncology
- Immunology
Background:
- Follicle centre cell lymphoma (FCCL) typically exhibits B cell lineage characteristics.
- Immunoglobulin (Ig) expression is a hallmark of B cell differentiation.
Purpose of the Study:
- To investigate immunoglobulin expression in neoplastic cells of FCCL with centroblastic/centrocytic histology.
- To explore potential discrepancies between cellular phenotype and histological classification.
Main Methods:
- Immunohistology on frozen and paraffin-embedded sections.
- Flow cytometry on cell suspensions using fluorescein-labeled antibodies (B1, FMC4, J5, UCHT1, OKT11).
- In vitro culture of cells for Ig production.
Main Results:
- Neoplastic cells in most cases lacked detectable surface or cytoplasmic Ig.
- A monotypic surface Ig population or light chain imbalance was found in only a minority of cases.
- Residual cells expressed T cell markers, and some neoplastic cells stained with pan-B cell and HLA class II antibodies.
Conclusions:
- The majority of neoplastic cells in these FCCL cases failed to express Ig, contrasting with their follicular histology.
- This Ig-negative phenotype challenges current B cell differentiation models.
- Further research is needed to elucidate the mechanisms underlying this Ig expression failure.