Genome-wide maps of hematopoietic stem and progenitor cells in mice bone marrow.

Purpose: To investigate whether the skeletal retardation observed in NG2-cre/Pot1afl/fl mice affected hematopoiesis. Methods: Whole bone marrow cells mRNA profiles of 2-week-old wild-type (NG2-cre/Pot1awt/wt) and Pot1a knockout (NG2-cre/Pot1afl/fl) mice were generated by deep sequencing, using Illumina NextSeq 500. Results: We compared the relative sizes of these subpopulations between the NG2-cre/Pot1afl/fl and control mice and found a significant reduction in cells of the B-cell lineage in NG2-cre/Pot1afl/fl marrow. Cell subpopulations associated with B-cell differentiation from hematopoietic stem/progenitor cells (HSPCs) were identified according to the expression of established marker genes. Conclusions: Bone marrow microenvironments composed of POT1a-deleted MSPCs impair B-cell development. Overall design: Single cell mRNA profiles of bone marrow HSCs and progenitor cells in NG2-cre/Pot1afl/fl and control mice.