Transcription factor profiling in individual hematopoietic progenitors by digital RT-PCR

Research output: Contribution to journalArticle


We report here a systematic, quantitative population analysis of transcription factor expression within developmental progenitors, made possible by a microfluidic chip-based "digital RT-PCR" assay that can count template molecules in cDNA samples prepared from single cells. In a survey encompassing five classes of early hematopoietic precursor, we found markedly heterogeneous expression of the transcription factor PU.1 in hematopoietic stem cells and divergent patterns of PU.1 expression within flk2(-) and flk2(+) common myeloid progenitors. The survey also revealed significant differences in the level of the housekeeping transcript GAPDH across the surveyed populations, which demonstrates caveats of normalizing expression data to endogenous controls and underscores the need to put gene measurement on an absolute, copy-per-cell basis.


Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Cell and Molecular Biology


  • PU.1, microfluidics, gene profiling, hematopoiesis, stem cells
Original languageEnglish
Pages (from-to)17807-17812
JournalProceedings of the National Academy of Sciences
Issue number47
Publication statusPublished - 2006
Publication categoryResearch

Bibliographic note

The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Hematopoietic Stem Cell Laboratory (013022012), Division of Molecular Hematology (DMH) (013017011)