Abstract: The present invention relates to the use of CDK8 and/or CDK19 inhibitors in the treatment of ribosomopathies as well as conditions characterized by reduced number of hematopoietic stem cells and/or progenitor cells; and bone anabolic disorders.

Abstract: The present invention relates to alpha-1-microglobulin (A1M) for use in the protection of bone marrow cells in a subject.

Abstract: The present invention relates to the use of CDK8 and/or CDK19 inhibitors in the treatment of ribosomopathies as well as conditions characterized by reduced number of hematopoietic stem cells and/or progenitor cells; and bone anabolic disorders.

Abstract: The invention provides methods of expanding BFU-E cells comprising contacting one or more BFU-E cells with a hypoxia inducible factor 1 activator and a glucocorticoid receptor (GR) activator, e.g., a GR agonist. In some embodiments, the FIIF-1 activator is a prolyl hydroxylase inhibitor (PHI). In some embodiments, the method comprises culturing BFU-E in medium containing a HIF-1a activator and a glucocorticoid receptor (GR) activator, e.g., a GR agonist. In some embodiments the BFU-E cells are human cells. The invention provides cell culture media useful for expanding BFU-Es, wherein the cell culture media comprise a HIF-1 activator and a GR activator (e.g., a GR agonist) The invention provides a method comprises administering a HIF-1 activator and a GR agonist to a subject in need thereof. In some embodiments, the subject suffers from anemia. In some embodiments, the anemia is an Epo-resistant anemia. In some embodiments, the anemia is Diamond-Blackfan anemia.