Fig. 7: IRX-type leukemia-initiating potential is lost earlier in B-cell development than HOXA-type potential.

a Schematic outline of in vitro CB transformation assay. CB HSPCs were sorted, transduced with KMT2A-Aff1, and cultured on MS-5 stroma cells under lymphoid conditions. b Flow cytometry plots of KMT2A-Aff1-transformed HSPCs. c RT-PCR of IRX1 and HOXA9 in the transformed HSPCs. HOXA-type (PER-494) and IRX-type (PER-785) cell lines are shown as controls. Experiments were independently repeated three times, and representative results are shown. Source data are provided as a Source Data file.