The present invention provides for compositions and methods for modulating hematopoietic stem cell populations by using HCS modulators, which are agents that either increase HSC numbers or decrease HSC numbers as desired by a particular indication. For example, HSC modulators found to increase HSC numbers include prostaglandin E2 (PGE2) and agents that stimulate the PGE2 pathway. Conversely, HSC modulators that prevent PGE2 synthesis decrease HSC numbers. HCS modulators may be used in vitro, in vivo, or ex vivo.
本发明提供了通过使用造血干细胞调节剂调节造血干细胞群的组合物和方法,造血干细胞调节剂是根据特定适应症的需要增加造血干细胞数量或减少造血干细胞数量的制剂。例如,可增加造血干细胞数量的造血干细胞调节剂包括
前列腺素E2(
PGE2)和刺激
PGE2途径的制剂。相反,阻止
PGE2 合成的造血干细胞调节剂则会减少造血干细胞的数量。造血干细胞调节剂可在体外、体内或体外使用。