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Role of HLA class II molecules expressed on hematopoietic progenitor cells
F Mascle1, N Mooney, A Devergie
1Laboratoire d'Immunogénétique Moléculaire, Institut des Cordeliers, Paris, France.
The fixation of monoclonal antibodies (MoAb) to the molecule HLA-DR induced an augmentation of thymidine uptake by bone marrow cells, an increased formation of granulo-monocytic colonies and the activation of membrane phospholipase C (PLC) in hematopoietic progenitor cell (HPC) population. The molecule DR expressed on HPC is therefore implicated in signal transduction leading to hematopoietic differentiation.
The fixation of monoclonal antibodies (MoAb) to the molecule HLA-DR induced an augmentation of thymidine uptake by bone marrow cells, an increased formation of granulo-monocytic colonies and the activation of membrane phospholipase C (PLC) in hematopoietic progenitor cell (HPC) population. The molecule DR expressed on HPC is therefore implicated in signal transduction leading to hematopoietic differentiation.