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Red Blood Cell Distribution Width May Predict Drug-Induced Anemia and Prognosis in Patients Affected by Primary/Secondary Myelofibrosis Treated with Ruxolitinib.
Oncol Ther
January 2025
Hematology, Department of Translational and Precision Medicine, Policlinico Umberto I-Sapienza University, Via Benevento 6, 00161, Rome, Italy.
Introduction: Myelofibrosis (MF) is often characterized by a multifactorial anemia determined, in part, by bone marrow (BM) fibrosis, extramedullary erythropoiesis and splenomegaly. Ruxolitinib (RUX) is the first-in-class janus kinase 2 (JAK2) inhibitor approved for treatment of MF, proved to reduce spleen volume and decrease symptom burden. The red cell distribution width (RDW) is the measure of erythrocyte volume variability (anisocytosis).
View Article and Find Full Text PDFMonocytes generated by interleukin-6-treated human hematopoietic stem and progenitor cells secrete calprotectin that inhibits erythropoiesis.
iScience
January 2025
INSERM U1287, Université Paris-Saclay, Gustave Roussy Cancer Center, Villejuif, France.
Elevated circulating levels of calprotectin (CAL), the S100A8/A9 heterodimer, are biomarkers of severe systemic inflammation. Here, we investigate the effects of CAL on early human hematopoiesis. CAL demonstrates limited impact on gene expression in stem and progenitor cells, in contrast with interleukin-6 (IL6), which promotes the expression of the and genes in hematopoietic progenitors and the generation of monocytes that release CAL.
View Article and Find Full Text PDFOur knowledge of which bone marrow cells affect red cell production is still incomplete. To explore the role of osteocytes in the process we performed bulk RNAseq of osteocytes isolated from control and phlebotomized mice. The top-upregulated gene following phlebotomy was , erythroferrone ( ).
View Article and Find Full Text PDFA Recombinant Antibody Against ALK2 Promotes Tissue Iron Redistribution and Contributes to Anemia Resolution in a Mouse Model of Anemia of Inflammation.
Am J Hematol
January 2025
Keros Therapeutics, Lexington, Massachusetts, USA.
Patients with chronic inflammation are burdened with anemia of inflammation (AI), where inflammatory cytokines inhibit erythropoiesis, impede erythropoietin production, and limit iron availability by inducing the iron regulator hepcidin. High hepcidin hinders iron absorption and recycling, thereby worsening the impaired erythropoiesis by restricting iron availability. AI management is important as anemia impacts quality of life and potentially affects morbidity and mortality.
View Article and Find Full Text PDFEarly differentiation of committed erythroid cells defined by miR-144/451 expression.
J Mol Cell Biol
January 2025
Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu 610052, China.
Before committing to an erythroid cell lineage, hematopoietic stem cells differentiate along a myeloid cell pathway to generate megakaryocyte-erythroid biopotential progenitor cells in bone marrow. Recent studies suggest that erythroid progenitors (EryPs) could be generated at the level of common myeloid progenitors (CMPs). However, due to a lack of suitable markers, little is known about the early differentiation of these committed EryP cells during CMP development.
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