Induced pluripotent stem cell-based mapping of β-globin expression throughout human erythropoietic development

Area of Science:

• Stem cell biology
• Hematopoiesis
• Genetics

Background:

• Robust beta-globin expression in induced pluripotent stem cells (iPSCs) is crucial for modeling red blood cell disorders.
• Existing methods require better tools to quantify and map beta-globin expression during erythropoiesis.

Purpose of the Study:

• To create a beta-globin reporter iPSC line for real-time, single-cell resolution mapping of beta-globin expression.
• To dissect the developmental and maturational status of iPSC-derived erythroid cells.

Main Methods:

• Development of a beta-globin reporter iPSC line.
• Single-cell RNA sequencing (scRNAseq) analysis.
• Mapping of beta-globin expression during erythropoiesis.

Main Results:

• The reporter line enabled real-time, single-cell mapping of beta-globin expression.
• scRNAseq identified distinct features of beta-globin-expressing cells.
• iPSC-derived erythroblasts showed gene expression patterns and biological processes similar to postnatal counterparts, indicating definitive erythropoiesis.

Conclusions:

• The developed reporter iPSC line is a valuable tool for studying erythropoiesis and modeling blood disorders.
• iPSC-derived erythroblasts accurately recapitulate key aspects of definitive erythropoiesis.
• These findings support the potential of iPSC-based approaches for regenerative medicine and disease modeling.