Nox4-IGF2 Axis Promotes Differentiation of Embryoid Body Cells Into Derivatives of the Three Embryonic Germ Layers

Jusong Kim, Jaewon Kim, Hee Jung Lim, Sanghyuk Lee, Yun Soo Bae, Jaesang Kim

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Reactive oxygen species (ROS) play important roles as second messengers in a wide array of cellular processes including differentiation of stem cells. We identified Nox4 as the major ROS-generating enzyme whose expression is induced during differentiation of embryoid body (EB) into cells of all three germ layers. The role of Nox4 was examined using induced pluripotent stem cells (iPSCs) generated from Nox4 knockout (Nox4−/−) mouse. Differentiation markers showed significantly reduced expression levels consistent with the importance of Nox4-generated ROS during this process. From transcriptomic analyses, we found insulin-like growth factor 2 (IGF2), a member of a gene family extensively involved in embryonic development, as one of the most down-regulated genes in Nox4−/− cells. Indeed, addition of IGF2 to culture partly restored the differentiation competence of Nox4−/− iPSCs. Our results reveal an important signaling axis mediated by ROS in control of crucial events during differentiation of pluripotent stem cells. Graphical Abstract: [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)1181-1192
Number of pages12
JournalStem Cell Reviews and Reports
Volume18
Issue number3
DOIs
StatePublished - Mar 2022

Keywords

  • ES cells
  • Embryoid body
  • IGF2
  • Nox4
  • ROS
  • iPSCs

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