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Published on: October 17, 2009
Cytoplasmic expression of a CD24-related epitope in human PHA activated normal T lymphocytes
M C Salamone1, B Achino, L Fainboim
1Laboratorio de Inmunogenética, Hospital de Clínicas José de San Martin, Buenos Aires, Argentina.
Abstract:
In this study we have analysed by immunoperoxidase (IPx) and indirect immunofluorescence (IIF) the intracellular and cell surface reactivity of VIB-E3 mAb, previously clustered as anti-CD24 antigen, on resting and activated normal human T lymphocytes. By IPx assay VIB-E3 mAb did not show reactivity with normal resting T cells. In contrast, the analysis of 11 different samples of PHA activated normal mononuclear cells, showed an intracytoplasmic expression of CD24. Kinetic studies showed that CD24 appears 24 to 48 h after PHA stimulation. To our knowledge, this is the first evidence that a CD24-related epitope is expressed in normal activated T lymphocytes.
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