Combined liver-cytokine humanization comes to the rescue of circulating human red blood cells.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 33674488.
- Also identified by DOI 10.1126/science.abe2485 and PMC identifier 8292008.
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Abstract
In vivo models that recapitulate human erythropoiesis with persistence of circulating red blood cells (RBCs) have remained elusive. We report an immunodeficient murine model in which combined human liver and cytokine humanization confer enhanced human erythropoiesis and RBC survival in the circulation. We deleted the fumarylacetoacetate hydrolase (<i>Fah</i>) gene in MISTRG mice expressing several human cytokines in place of their murine counterparts. Liver humanization by intrasplenic injection of human hepatocytes (huHep) eliminated murine complement C3 and reduced murine Kupffer cell density. Engraftment of human sickle cell disease (SCD)-derived hematopoietic stem cells in huHepMISTRG<i>Fah</i> <sup>-/-</sup> mice resulted in vaso-occlusion that replicated acute SCD pathology. Combined liver-cytokine-humanized mice will facilitate the study of diseases afflicting RBCs, including bone marrow failure, hemoglobinopathies, and malaria, and also preclinical testing of therapies.
Medical subject headings
- Anemia, Sickle Cell
- Blood Circulation
- Disease Models, Animal
- Erythrocytes
- Erythropoiesis
- Mice