Absence of common ALL antigen on normal bipotent myeloid, erythroid, and
granulocyte progenitors
LA Clavell, JM Lipton, RC Bast , M Kudisch, J Pesando, SF Scholssman and J Ritz
The presence of the common acute lymphoblastic leukemia antigen (CALLA) on
leukemic cells from the great majority of patients with non-T cell acute
lymphoblastic leukemia and chronic myelogenous leukemia in blast crisis
suggests that CALLA could be differentiation antigen expressed by normal
lymphoid and myeloid stem cells. Treatment with a murine monoclonal
anti-CALLA antibody and complement lysed CALLA-positive leukemic cells
quantitatively, whereas similar treatment of nucleated cells from
peripheral blood and bone marrow failed to affect the expression, in
semisolid culture, of CFU-G/E, BFU-E, CFU-E, or CFU-C. These data suggest
that CALLA is not a normal differentiation antigen of the myeloid bipotent
cell or its committed progenitors.
Volume 58,
Issue 2,
pp. 333-336,
08/01/1981
Copyright © 1981 by The American Society of Hematology