Identification of B cells in multilineage hematopoietic colonies derived from cells of patients with lymphocytic lymphoma.

AUTOR(ES)

Fauser, A A

RESUMO

Pluripotent stem cells from human bone marrow can be identified in culture by their ability to form multilineage hematopoietic colonies containing different myeloid lineages and T cells of different phenotypes. The observation of a common progenitor of myeloid and lymphoid cells in normal and disturbed hematopoiesis prompted the question of whether B cells are part of the differentiation program of stem cells. The availability of hybridomas of azaguanine-resistant T-cell lines secreting monoclonal growth factors for B cells and clinical conditions that are considered to originate from malignant B cells might facilitate this investigation. We were able to identify surface immunoglobulin and B-cell-associated antigen-positive cells within such colonies, indicating that B cells are generated from a myelolymphopoietic stem cell. This report describes the presence of B cells in these colonies derived from bone marrow cells of patients with non-Hodgkin lymphoma.

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