Deletion of Eps15 and Eps15L1 in the hematopoietic system causes microcytic hypochromic anemia. Deletion of Eps15 and Eps15L1 in the hematopoietic system.

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Presentation transcript:

Deletion of Eps15 and Eps15L1 in the hematopoietic system causes microcytic hypochromic anemia. Deletion of Eps15 and Eps15L1 in the hematopoietic system causes microcytic hypochromic anemia. (A) Relative TfR endocytic constant (Ke) (top) and TfR surface levels per cell (bottom) in WT, Eps15L1-KO (L1KO), Eps15-KO (15KO), and DKO fibroblasts. WT value (= 1.0) is shown by a dashed red line. (B) Values of RBCs, hemoglobin (HGB), hematocrit (HCT), MCV, and RBC distribution width in newborn WT, Eps15L1-KO (L1KO), conditional Eps15-KO (c15KO), and conditional Eps15-KO/Eps15L1-KO (c15/L1KO) mice. At least eight animals for each genotype were analyzed. (C) May–Grünwald–Giemsa staining of blood smears from newborn mice of the indicated genotype. Arrows point to reticulocytes, which retain methylene blue dye. Bar, 10 μm. (D) Quantitation of the experiments shown in (C). Number of newborn mice analyzed: WT = 7, L1KO = 6, c15KO = 6, c15/L1KI = 6. (E) Values of RBCs, HGB, HCT, and MCV in adult WT and cDKO mice. At least nine animals of each genotype were analyzed. (F) Blood smears of adult WT and cDKO mice stained with May–Grünwald–Giemsa (top) or o-dianisidine (bottom). Bar, 10 μm. (G) Representative fluorescence-activated cell sorting (FACS) analysis of peripheral blood from adult WT and cDKO mice, stained with thiazole orange (TO) to reveal reticulocytes (top) or with TfR (CD71) and thiazole orange for nucleic acids (bottom). In the top panels, the percentage of TO+ cells in one representative WT and in one representative cDKO is shown. In the main test, average ± SEM of TO+ cells, calculated from at least five animals of each genotype, is indicated. (H) Percentage of positive and negative RBCs for surface TfR (CD71) among TO+ and TO− blood cells, in adult WT and cDKO mice. At least five animals of each genotype were analyzed. In (A), (B), (D), (E), and (H): *P < 0.05 versus WT; **P < 0.01 versus WT; ***P < 0.001 versus WT. Cinzia Milesi et al. LSA 2019;2:e201800273 © 2019 Milesi et al.