Figure 4A Representative IHCs in human reactive lymphoid tissue, where HK2 expression is mainly restricted to proliferating blasts within germinal centers (center), and in patient B-CLL cells. Scale bar 100 µm. Effect of cl-HK2pep on human B-CLL cells freshly isolated from patients. HK2-expressing B-CLL cells (B; GAPDH and respiratory complex III subunit UQCRC2 are cytosol and mitochondrial loading controls, respectively) Cells are treated with 5 µM cl-HK2pep; PD150606 (50 μM) is pre-incubated for 1 h. Experiments are carried out on samples from at least 10 patients and on CD19+, primary B lymphocytes from 5 healthy controls. Effect of cl-HK2pep on human B-CLL cells freshly isolated from patients. HK2-expressing B-CLL cells undergo mitochondrial depolarization assessed by TMRM staining (C) Experiments are carried out on samples from at least 10 patients and on CD19+, primary B lymphocytes from 5 healthy controls. data are presented as mean±SEM; all data were obtained from 3 technical replicates in all analyzed patient samples. two-way ANOVA: p<0.0001 (cl-HK2pep treatment vs cl-HK2pep+PD150606 or cl-SCRpep treatments) Student's t test; ***p<0.01, *p<0.05. ffect of cl-HK2pep on human B-CLL cells freshly isolated from patients. cell death, measured by cytofluorimetric analysis of Annexin V-FITC and 7-AAD staining Cells are treated with 5 µM cl-HK2pep; PD150606 (50 μM) is pre-incubated for 1 h. Experiments are carried out on samples from at least 10 patients and on CD19+, primary B lymphocytes from 5 healthy controls. In C, D, F and G data are presented as mean±SEM; all data were obtained from 3 technical replicates in all analyzed patient samples. wo-way ANOVA: p<0.0001 (cl-HK2pep treatment vs cl-HK2pep+PD150606 or cl-SCRpep treatments); tudent's t test; ***p<0.01, *p<0.05. Effect of cl-HK2pep on human B-CLL cells freshly isolated from patients. cell death, measured by cytofluorimetric analysis of Annexin V-FITC and 7-AAD staining Cells are treated with 5 µM cl-HK2pep; PD150606 (50 μM) is pre-incubated for 1 h. Experiments are carried out on samples from at least 10 patients and on CD19+, primary B lymphocytes from 5 healthy controls. Effect of cl-HK2pep on human B-CLL cells freshly isolated from patients. cell death, measured by cytofluorimetric analysis of Annexin V-FITC and 7-AAD staining Cells are treated with 5 µM cl-HK2pep; PD150606 (50 μM) is pre-incubated for 1 h. Experiments are carried out on samples from at least 10 patients and on CD19+, primary B lymphocytes from 5 healthy controls. data are presented as mean±SEM; all data were obtained from 3 technical replicates in all analyzed patient samples. Bonferroni post-test in graph ***p<0.001(cl-HK2pep vs cl-SCRpep and cl-HK2pep vs PD150606+cl-HK2pep) Student's t test; ***p<0.01, *p<0.05. Effect of cl-HK2pep on human B-CLL cells freshly isolated from patients. cell death, measured by cytofluorimetric analysis of Annexin V-FITC and 7-AAD staining Cells are treated with 5 µM cl-HK2pep; PD150606 (50 μM) is pre-incubated for 1 h. Experiments are carried out on samples from at least 10 patients and on CD19+, primary B lymphocytes from 5 healthy controls. data are presented as mean±SEM; all data were obtained from 3 technical replicates in all analyzed patient samples. Bonferroni post-test in graph ***p<0.001(cl-HK2pep vs cl-SCRpep and cl-HK2pep vs PD150606+cl-HK2pep) Student's t test; ***p<0.01, *p<0.05.