Induction of a hemogenic program in mouse fibroblasts

Research output: Contribution to journalArticle

Abstract

Definitive hematopoiesis emerges during embryogenesis via an endothelial-to-hematopoietic transition. We attempted to induce this process in mouse fibroblasts by screening a panel of factors for hemogenic activity. We identified a combination of four transcription factors, Gata2, Gfi1b, cFos, and Etv6, that efficiently induces endothelial-like precursor cells, with the subsequent appearance of hematopoietic cells. The precursor cells express a human CD34 reporter, Sca1, and Prominin1 within a global endothelial transcription program. Emergent hematopoietic cells possess nascent hematopoietic stem cell gene-expression profiles and cell-surface phenotypes. After transgene silencing and reaggregation culture, the specified cells generate hematopoietic colonies in vitro. Thus, we show that a simple combination of transcription factors is sufficient to induce a complex, dynamic, and multistep developmental program in vitro. These findings provide insights into the specification of definitive hemogenesis and a platform for future development of patient-specific stem and progenitor cells, as well as more-differentiated blood products.

Details

Authors
  • Carlos Filipe Pereira
  • Betty Chang
  • Jiajing Qiu
  • Xiaohong Niu
  • Dmitri Papatsenko
  • Caroline E. Hendry
  • Neil R. Clark
  • Aya Nomura-Kitabayashi
  • Jason C. Kovacic
  • Avi Ma'Ayan
  • Christoph Schaniel
  • Ihor R. Lemischka
  • Kateri Moore
External organisations
  • Icahn School of Medicine at Mount Sinai
Original languageEnglish
Pages (from-to)205-218
Number of pages14
JournalCell Stem Cell
Volume13
Issue number2
Publication statusPublished - 2013 Aug 1
Publication categoryResearch
Peer-reviewedYes
Externally publishedYes