Isolation of Murine Myeloid Progenitor Populations by CD34/CD150 Surface Markers

Myeloid progenitors are intermediates between Hematopoietic Stem Cells (HSCs) and Myeloid effector progeny. In mouse bone marrow, they are part of the Lineage(-) cKit(+) Sca1(-) (LK) compartment. To date, most researchers used CD34 and Fc gamma R surface markers for the dissection of this compartment into various populations. Surprisingly, however, this approach does not provide distinct separation by fluorescence-activated cell sorting (FACS). In this study, we suggest using CD150 instead of Fc gamma R. We re-analyzed published single-cell RNA-Seq data and found that CD34/CD150 provides better sub-populations separation, compared to the classical CD34/Fc gamma R-based approach. We confirm our findings by independent FACS analysis. We demonstrate comparable differentiation potential of the newly-obtained LK sub-populations, like previous classical ones. Therefore, we suggest the CD34/CD150 gating strategy, utilizing commonly-used surface markers, as a robust and reproducible separation of the LK compartment into distinct sub-populations.

Automated summary

In this study, the researchers propose using CD34/CD150 instead of the traditional CD34/Fc gamma R approach to separate sub-populations in the LK compartment. They re-analyzed single-cell RNA-Seq data and confirmed their findings through independent FACS analysis. The newly-obtained LK sub-populations showed comparable differentiation potential to the classical ones.