| First Author | Robin C | Year | 2006 |
| Journal | Dev Cell | Volume | 11 |
| Issue | 2 | Pages | 171-80 |
| PubMed ID | 16890157 | Mgi Jnum | J:119282 |
| Mgi Id | MGI:3701714 | Doi | 10.1016/j.devcel.2006.07.002 |
| Citation | Robin C, et al. (2006) An unexpected role for IL-3 in the embryonic development of hematopoietic stem cells. Dev Cell 11(2):171-80 |
| abstractText | Cytokines are important in adult hematopoiesis, yet their function in embryonic hematopoiesis has been largely unexplored. During development, hematopoietic stem cells (HSCs) are found in the aorta-gonad-mesonephros (AGM) region, yolk sac (YS), and placenta and require the Runx1 transcription factor for their normal generation. Since IL-3 is a Runx1 target and this cytokine acts on adult hematopoietic cells, we examined whether IL-3 affects HSCs in the mouse embryo. Using Runx1 haploinsufficient mice, we show that IL-3 amplifies HSCs from E11 AGM, YS, and placenta. Moreover, we show that IL-3 mutant embryos are deficient in HSCs and that IL-3 reveals the presence of HSCs in the AGM and YS prior to the stage at which HSCs are normally detected. Thus, our studies support an unexpected role for IL-3 during development and strongly suggest that IL-3 functions as a proliferation and/or survival factor for the earliest HSCs in the embryo. |
