Cytokinesis failure of cancer cells caused by heat stress and their cell fates. (A) Time-lapse images of MGC-803 cells; (A1) bipolar division, (A2) multipolar division, and (A3) cell apoptosis of MGC-803 cells after cytokinesis failure induced by heat stress, scale bar: 50 μm. (B) Images of MCF-7 cells; (B1) bipolar division, (B2) multipolar division, and (B3) cell apoptosis of MCF-7 cells after cytokinesis failure induced by heat stress, scale bar: 40 μm. (C) The cytokinesis failure frequency of MGC-803 cells and their cell fates; (C1) the frequency of MGC-803 cells with cytokinesis failure (mean values ± SD are shown from three independent experiments); (C2) MGC-803 cells fates with cytokinesis failure; the ratios through the routes of bipolar divisions, multipolar divisions, and cell apoptosis are 4:7:0 in the control and 9:24:6 in the heat shock group of MGC-803 cells, respectively. (D) The cytokinesis failure frequency of MCF-7 cells and their cell fates; (D1) the frequency of MCF-7 cells with cytokinesis failure (mean values ± SD are shown from three independent experiments); (D2) MCF-7 cells fates with cytokinesis failure; the ratios through the routes of bipolar divisions, multipolar divisions and cell apoptosis are 2:17:5 in the control and 1:8:7 in the heat shock group of MCF-7 cells, respectively. BP (bipolar), MP (multipolar), and AP (apoptosis). p-value < 0.05 was considered statistically significant, *** p < 0.001.