Erythropoietin-dependent Acquisition of CD71hiCD105hi Phenotype within CD235a- Early Erythroid Progenitors.

ABSTRACT: The development of committed erythroid progenitors and their continued maturation into erythrocytes requires the cytokine erythropoietin (Epo). Here, we describe the immunophenotypic identification of a CD34- colony-forming unit-erythroid (CFU-E) progenitor subtype, termed late CFU-E (lateC), that arises in an Epo-dependent manner during human early erythropoiesis (EE). LateC cells lack CD235a (glycophorin A) but have high levels of CD71 and CD105, characterized as Lin-CD123-CD235a-CD49d+CD117+CD34-CD71hiCD105hi. Analysis of ex vivo cultures of bone marrow (BM) CD34+ cells showed that acquisition of the CD71hiCD105hi phenotype in lateC occurs through the formation of four other EE subtypes. Of these, two are CD34+ burst-forming unit-erythroid (BFU-E) cells, distinguishable as CD71loCD105lo

SUBMITTER: Schippel N 

PROVIDER: S-EPMC12622993 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature