Different motile behaviors of human hematopoietic stem versus progenitor cells at the osteoblastic nicheMore about Open Access at the Crick
Authors listKatie Foster François Lassailly Fernando Dos Anjos Afonso Erin Currie Kevin Rouault-Pierre Dominique Bonnet
Despite advances in our understanding of interactions between mouse hematopoietic stem cells (HSCs) and their niche, little is known about communication between human HSCs and the microenvironment. Using a xenotransplantation model and intravital imaging, we demonstrate that human HSCs display distinct motile behaviors to their hematopoietic progenitor cell (HPC) counterparts, and the same pattern can be found between mouse HSCs and HPCs. HSCs become significantly less motile after transplantation, while progenitor cells remain motile. We show that human HSCs take longer to find their niche than previously expected and suggest that the niche be defined as the position where HSCs stop moving. Intravital imaging is the only technique to determine where in the bone marrow stem cells stop moving, and future analyses should focus on the environment surrounding the HSC at this point.
Journal Stem Cell Reports
Issue number 5