Summary
The humoral immune response to autologous leukemic cells was investigated in childhood ALL using a 125I protein A binding assay. In 5/7 patients antibodies were demonstrated at diagnosis and in 3/7 cases also after chemotherapy. Sera from 2/3 patients, which bound significantly to autologous leukemic cells, did not bind significantly to autologous remission cells. In allogeneic experiments sera bound significantly to ALL leukemic cells (6/7 positive combinations), but not to AML leukemic cells (8/8 negative combinations). We propose that ALL sera contain antibodies binding to autologous leukemic cells and that they are directed against a common ALL antigen(s).
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Abbreviations
- ALL:
-
acute lymphoblastic leukemia
- AML:
-
acute myeloid leukemia
- CALLA:
-
common ALL antigen
- CPM:
-
counts per minute
- HTLV 1:
-
human T cell leukemia/lymphoma virus, type 1
- I a:
-
immune-associated antigens
- SE:
-
standard error
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Fäldt, R., Ankerst, J. & Garwicz, S. Demonstration of antibodies binding to autologous and allogeneic leukemic cells in childhood ALL. Blut 52, 337–343 (1986). https://doi.org/10.1007/BF00320780
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DOI: https://doi.org/10.1007/BF00320780