Inositol hexakisphosphate kinase 1 (Ip6k1) deletion enhances mesenchymal stem/stromal cell (MSC) hematopoiesis‐support activity. (A): Methylcellulose colony forming assays using conditioned media from Ip6K1+/+ versus Ip6k1
−/− MSCs. Data are mean ± SD (n = 3). **, p < .01 by analysis of variance (ANOVA) and Tukey post hoc test. (B): Conditioned media from Ip6K1+/+ versus Ip6k1
−/− MSCs was concentrated 50‐fold and analyzed using Luminex‐based multiplex bead arrays. Data represent mean ± SD (n = 2). (A) is two‐way ANOVA with Tukey post hoc test (**, p < .001) and (B–D) are Student's t test (*, p < .05; **, p < .01). Abbreviations: BFU, blast forming unit; CFU, colony forming unit; E, erythroid; G, granulocyte; GEMM, granulocyte, erythrocyte, monocyte, megakaryocyte; GM, granulcoyte, monocyte; M, monocyte; IL‐6, interleukin‐6; IP6K1, inositol hexakisphosphate kinase 1; SCF, stem cell factor; SDF, stromal derived factor; VEGF, vascular endothelial growth factor.