Expression of B-Cell-Associated Antigens During B-Cell Ontogeny
The development of the B-cell lineage from stem cells to mature B lymphocytes and antibody-secreting plasma cells is a multistep process of differentiation. Stages of B-cell maturation have been characterized by the rearrangement and expression of the immunoglobulin (Ig) genes, by surface markers, and by susceptibilities to growth and differentiation factors (Tonegawa 1983; Alt et al. 1986; Campana et al. 1985; Loken et al. 1987; Kishimoto 1987; Cooper 1987). B-lineage acute lymphoblastic leukemia’s are presumed to result from leukemogenic events that occur in progenitor B cells during early phases of B-cell ontogeny and lead to a maturational arrest at discrete stages of early B-cell differentiation (Greaves 1986). Recently published data on molecular components of the B-cell antigen receptor complex, molecules selectively expressed in pre-B cells, and B-lineage- associated differentiation antigens have provided a new insight into early B-cell development, and this will contribute to a better understanding of the cell biology of B-lineage acute lymphoblastic leukemia’s.
KeywordsAcute Lymphoblastic Leukemia Light Chain Expression Cytoplasmic CD22 Common Acute Lymphoblastic Leukemia Antigen Antigen Receptor Complex
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