Preprint Watch: January
The first monthly trawl for 2025 is plentiful: 9 preprints focusing on Acute Myeloid Leukemia, but also spatial fate mapping meets barcoding, how cell fate decisions occur in hematopoietic progenitors, and more! If there's a specific preprint you enjoyed and would like to see featured, please send it to us using this form . STEM AND PROGENITOR CELLS BIOLOGY Semaphorin 4A maintains functional diversity of the hematopoietic stem cell pool https://www.biorxiv.org/content/10.1101/2024.11.12.622506v1?rss=1 The authors looked at Semaphorin 4A (Sema4A), a protein produced by neutrophils and signaling through Plexin D1, able to protect myeloid-biased hematopoietic stem cells (myHSCs) from inflammatory stress, preserving their epigenetic state and regenerative capacity. In the absence of Sema4A, myHSCs exhibit inflammatory hyper-responsiveness, leading to excessive expansion, myeloid bias, and impaired function with age. Mitochondria Regulate the Cell Fate Decisions of Megakaryocyte-Erythro...