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. 2020 Dec 23;107(1):58–76. doi: 10.3324/haematol.2020.260331

Figure 6.

Figure 6.

Combined inhibition of BCL-2 and MCL-1 has strong anti-leukemia activity and prolongs survival in a patient-derived xenograft model of acquired venetoclax/decitabine-resistant acute myeloid leukemia. (A) Patient-derived xenograft (PDX) model and experimental scheme. (B) Circulating human CD45+ (hCD45+) cells in mouse peripheral blood (PB) samples obtained from each treatment group on treatment day (d) 18. (C) hCD45+ cells in mouse bone marrow (BM) samples obtained from each treatment group on treatment d 25. (D) hCD45+ cells in mouse spleens and spleen sizes of each treatment group on treatment d 25. hCD45+ cells were measured by flow cytometry. (E) Survival curves. (F) BM leukemia cell clusters based on the expression of cell surface markers and viable leukemic cells in various cell populations on treatment d 25 in each treatment group as determined by cytometry by time of flight (CyTOF). *P≤0.05; **P≤0.01; ***P≤0.001; ****P≤0.0001. Results are expressed as the mean ± standard error of the mean. Survival data were analyzed using the log-rank test. Con: control; VEN: venetoclax; 5991: AZD5991; 4573: AZD4573.