Figure 3.

Effect of different Tat variants on cell cycle progression, apoptosis and microtubule network in lymphocytes. (A) Table showing data from fluorescence microscopy after 20 hours treatment with indicated concentration of Tat or paclitaxel. Percentage of apoptotic cells are determined after DAPI staining and the differences in apoptosis between treated and untreated cells used as control obtained in three independent experiments are presented. (B) Jurkat cells were treated with indicated concentrations of paclitaxel and various Tat or were untreated (control). After 20 hours, cells were stained with PI and analysed by flow cytometry. Percentage of cells in G2/M (G2 / M) or apoptotic cells (H) with hypodiploid DNA are indicated in the upper corner of each cell (C) Jurkat cells were treated with 10 μM Tat Eli or 1 μM paclitaxel and processed for immunofluorescence labeling with anti-alpha tubulin antibody as described in materials and methods. Control corresponds to untreated cells.