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Bone marrow origin of a B-cell lymphoma

LF Bertoli, H Kubagawa, GV Borzillo, PD Burrows, MT Schreeder, AJ Carroll and MD Cooper

Division of Developmental and Clinical Immunology, University of Alabama, Birmingham 35294.

To search for precursors of the neoplastic B cells in a patient with a nodular lymphoma, we produced a monoclonal antibody to a variable region idiotope on the lymphoma IgM heavy chain. Clonal ancestors of the lymphoma cells were identified by this marker among bone marrow pre- B cells (5% to 26%). A second antiidiotype (anti-Id) antibody specific for the complete lymphoma IgM kappa recognized 10% of B cells in bone marrow and blood and greater than 95% of B cells in lymphomatous lymph nodes, including one obtained after tumor conversion to a diffuse large cell lymphoma. Immunoglobulin gene analysis surprisingly revealed expansion of multiple clones of early B lineage cells in bone marrow, including members of the neoplastic clone. The data suggest that this lymphoma arose through a progression of transformational events beginning in bone marrow: first, creation of an oligoclonal pre- neoplastic pool of pre-B cells, subsequent conversion of a single subclone into low grade neoplastic B cells that homed to the lymph node follicles, and later progression to a more invasive form of the B-cell lymphoma.

Volume 72, Issue 1, pp. 94-101, 07/01/1988
Copyright © 1988 by The American Society of Hematology


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