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Two monoclonal antibodies (anti-3-3 and anti-3-40) were produced, which identify two new leukemia-associated antigens. Both antibodies reacted with most cell lines derived from patients with T lymphoblastic leukemia (T-ALL), but were not detected on suspensions of normal hematopoietic cells (including thymocytes) by cytotoxicity, absorption, or indirect immunofluorescence assays. Analysis of fresh leukemic cells indicated that anti-3-3 only reacted with T-ALL cells, while anti-3-40 also reacted with some non-T, non-B ALL cells and a few acute myelocytic leukemia (AML) cells. The 3-40 antigen was also found histopathologically in frozen sections of several normal tissues, including the epithelial cells and a few lymphoid cells of the thymus, and some malignant tissues. The 3-3 antigen was not found in any tissue studied. A "double absorption"assay provided additional serologic evidence that the two antibodies identify different antigenic determinants. Biochemical analysis indicated that the molecules immunoprecipitated by anti-3-3 and anti-3-40 have molecular weights of 35,000-40,000 daltons. This study demonstrated that the 3-3 and 3-40 antigens are markers for human T-ALL and can be used along with the normal T-lymphocyte antigen, 3A1, to discriminate T-ALL from cutaneous T-cell lymphoma (CTCL), adult T-cell leukemia (ATL), and T-cell chronic lymphocytic leukemia (T-CLL).
K Naito, and
R W Knowles, and
F X Real, and
Y Morishima, and
K Kawashima, and
B Dupont
September 1982,
Blood,
K Naito, and
R W Knowles, and
F X Real, and
Y Morishima, and
K Kawashima, and
B Dupont
October 1982,
Cancer research,
K Naito, and
R W Knowles, and
F X Real, and
Y Morishima, and
K Kawashima, and
B Dupont
April 1987,
Cancer research,
K Naito, and
R W Knowles, and
F X Real, and
Y Morishima, and
K Kawashima, and
B Dupont
March 1981,
Cancer research,
K Naito, and
R W Knowles, and
F X Real, and
Y Morishima, and
K Kawashima, and
B Dupont
June 1981,
International journal of cancer,
K Naito, and
R W Knowles, and
F X Real, and
Y Morishima, and
K Kawashima, and
B Dupont
November 1984,
Clinical and experimental immunology,
K Naito, and
R W Knowles, and
F X Real, and
Y Morishima, and
K Kawashima, and
B Dupont
January 1985,
Neoplasma,
K Naito, and
R W Knowles, and
F X Real, and
Y Morishima, and
K Kawashima, and
B Dupont
June 1981,
Blood,
K Naito, and
R W Knowles, and
F X Real, and
Y Morishima, and
K Kawashima, and
B Dupont
January 1983,
Leukemia research,
K Naito, and
R W Knowles, and
F X Real, and
Y Morishima, and
K Kawashima, and
B Dupont
February 2009,
Expert review of hematology,
