NewslettersHematopoiesis News Gpr171 Regulates Embryonic Hematopoietic Stem Cell Emergence via ERK1/2 and Notch Signaling By Emily Salmini - January 28, 2026 0 41 Researchers identifed GPR171, a P2Y-family G-protein-coupled receptor, as a critical regulator of vertebrate embryonic HSC specification. [Proceedings of The National Academy of Sciences of The United States of America] Abstract