Aguilar-Santelises M, Mellstedt H, Jondal M. Membrane expression of IL-1 alpha in chronic B lymphocytic leukemia.
Immunol Lett 1993;
37:7-12. [PMID:
8225408 DOI:
10.1016/0165-2478(93)90125-l]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Patients with B chronic lymphocytic leukemia (B-CLL) demonstrate a high variability in disease activity, from a benign monoclonal lymphocytosis to a rapidly fatal condition. Progressive B-CLL is related to a high expression of different growth factor receptors on the leukemic cells and to a high proliferative in vitro response to Staphylococcus aureus strain Cowan 1 (SAC). As the expression of membrane IL-1 alpha (mIL-1 alpha) indicates B lymphocyte activation, we have investigated mIL-1 alpha on cells from patients at different stages of the disease. Total cellular levels of IL-1 alpha were measured by flow cytometry of permeabilized cells and compared with CD5, CD19, CD25 and IgM expression on the cell surface. mIL-1 alpha is upregulated, both in leukemic and normal lymphocytes, in response to sIgM cross-linking with SAC or phorbol ester activation. A significantly higher expression of mIL-1 alpha was found in cells from patients with a clinically benign form of the disease.
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