Receptor for platelet-activating factor (PAF) is not detectable by flow cytometry on the surface of myeloid leukemic cells

Berdel, Wolfgang E.; Kulimova, Emma; Kolkmeyer, Astrid; Zühlsdorf, Michael; Serve, Hubert; Büchner, Thomas; Oelmann, Elisabeth
December 2005
Annals of Hematology;Dec2005, Vol. 84 Issue 12, p771
Academic Journal
Flow cytometry was applied to test for platelet-activating-factor receptor (PAF-R) presence on the membranes of acute myeloid leukemia (AML) cells. We have used six human AML cell lines and freshly taken density gradient separated blasts from the bone marrow of ten AML patients covering the majority of French–American–British (FAB) subtypes. Additionally, we have used one histiocytic lymphoma cell line and mature human granulocytes/monocytes as controls. Our results indicate lack of membrane PAF-R on AML of all FAB subtypes tested. This was particularly true for the more mature and differentiated subtypes M4 and M5, including monocytic cell elements, and the promyelocytic M3 AML. In contrast, membrane PAF-R could be easily detected in a histiocytic lymphoma cell line and mature granulocytes/monocytes from peripheral blood used as positive controls. In conclusion, this observation precludes the use of membrane PAF-R as an immunophenotypic marker for AML classification or detection of minimal residual disease.


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