Lack of expression of adhesion molecules on leukemic cells: possible pathogenetic factor in blood malignancies.
In 68 patients with different leukemias the expression of the following adhesion molecules was examined: CD11a, CD18, CD54, CD44, CD58, and CD59. While in normal individuals all these molecules are broadly expressed on leukocytes, in patients with leukemias the following deviations were observed: (a) at least one of the examined molecules was missing in 64/68 cases (94%); in 12/68 cases (18%) both molecules LFA-1 and ICAM-1 were missing, in 37/68 (54%) either LFA-1 or ICAM-1, and in 15/68 cases (22%) adhesion molecules other than LFA-1 or ICAM-1 were missing; (b) the expression of CD11a/CE18, CD58, CD59 on leukemic cells was heterogeneous, without any clear correlation to the subclass of leukemia; (c) in the majority of cases, CD54 (45/68; 66%) and CD44 (36/68; 53%) were missing, however showing a tendency of expression on leukemic cells with more mature immunophenotype.
Marinov
I
I
Institute of Hematology and Blood Transfusion, Prague, Czech Republic.
Koubek
K
K
Starý
J
J
D015815:Cell Adhesion Molecules / Q000235:genetics / Q000502:physiology*; D015870:Gene Expression; D006801:Humans; D016130:Immunophenotyping; D007938:Leukemia / Q000209:etiology / Q000473:pathology*
D015815:Cell Adhesion Molecules