Modelling Congenital Dyserythropoietic Anemia Type II through Gene Editing in Hematopoietic Stem and Progenitor Cells
BLOOD(2020)
摘要
Congenital dyserythropoietic anemias (CDAs) are a group of inherited anemias that affect the development of the erythoid lineage. They are characterized by ineffective erythropoiesis with distinct morphologic abnormalities of erythroblasts, a degree of hemolysis, and secondary hemochromatosis. Patients usually present with congenital anemia, jaundice, splenomegaly, and an absolute reticulocyte count inadequate for the degree of anemia. CDA type II (CDAII) is the most frequent type. CDAII patients show anemia of variable degrees, and 20% are transfusion dependent. The most specific finding of CDAII marrow is the presence of more than 10% mature binucleated erythroblasts with two nuclei at the same erythroid maturation stage. Treatment of CDAII patients may involve blood transfusions, iron chelation therapy and splenectomy. The only described definitive therapy is allogeneic bone marrow transplantation, which implies additional side effects for these patients. Therefore, new therapeutic approaches are needed.
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关键词
gene editing,anemia,hematopoietic stem
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