| First Author | Molotkov A | Year | 2018 |
| Journal | Dev Biol | Volume | 442 |
| Issue | 1 | Pages | 155-161 |
| PubMed ID | 30026121 | Mgi Jnum | J:265825 |
| Mgi Id | MGI:6201678 | Doi | 10.1016/j.ydbio.2018.07.010 |
| Citation | Molotkov A, et al. (2018) Distinct mechanisms for PDGF and FGF signaling in primitive endoderm development. Dev Biol 442(1):155-161 |
| abstractText | FGF signaling is known to play a critical role in the specification of primitive endoderm (PrE) and epiblast (Epi) from the inner cell mass (ICM) during mouse preimplantation development, but how FGFs synergize with other growth factor signaling pathways is unknown. Because PDGFRalpha signaling has also been implicated in the PrE, we investigated the coordinate functions of PDGFRalpha together with FGFR1 or FGFR2 in PrE development. PrE development was abrogated in Pdgfra; Fgfr1 compound mutants, or significantly reduced in Pdgfra; Fgfr2 or Pdgfra(PI3K); Fgfr2 compound mutants. We provide evidence that both Fgfr2 and Pdgfra play roles in PrE cell survival while Fgfr1 controls PrE cell specification. Our results suggest a model where FGFR1-engaged ERK1/2 signaling governs PrE specification while PDGFRalpha- and by analogy possibly FGFR2- engaged PI3K signaling regulates PrE survival and positioning in the embryo. Together, these studies indicate how multiple growth factors and signaling pathways can cooperate in preimplantation development. |
