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ID4 controls mammary stem cells and marks breast cancers with a stem cell-like phenotype

  • Simon Junankar
  • , Laura A. Baker
  • , Daniel L. Roden
  • , Radhika Nair
  • , Ben Elsworth
  • , David Gallego-Ortega
  • , Paul Lacaze
  • , Aurélie Cazet
  • , Iva Nikolic
  • , Wee Siang Teo
  • , Jessica Yang
  • , Andrea McFarland
  • , Kate Harvey
  • , Matthew J. Naylor
  • , Sunil R. Lakhani
  • , Peter T. Simpson
  • , Ashwini Raghavendra
  • , Jodi Saunus
  • , Jason Madore
  • , Ewan K. A. Millar

    Research output: Contribution to journalArticlepeer-review

    50 Citations (Scopus)

    Abstract

    Basal-like breast cancer (BLBC) is a heterogeneous disease with poor prognosis; however, its cellular origins and aetiology are poorly understood. In this study, we show that inhibitor of differentiation 4 (ID4) is a key regulator of mammary stem cell self-renewal and marks a subset of BLBC with a putative mammary basal cell of origin. Using an ID4GFP knock-in reporter mouse and single-cell transcriptomics, we show that ID4 marks a stem cell-enriched subset of the mammary basal cell population. ID4 maintains the mammary stem cell pool by suppressing key factors required for luminal differentiation. Furthermore, ID4 is specifically expressed by a subset of human BLBC that possess a very poor prognosis and a transcriptional signature similar to a mammary stem cell. These studies identify ID4 as a mammary stem cell regulator, deconvolute the heterogeneity of BLBC and link a subset of mammary stem cells to the aetiology of BLBC.
    Original languageEnglish
    Article number6548
    Number of pages12
    JournalNature Communications
    Volume6
    DOIs
    Publication statusPublished - 2015

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 3 - Good Health and Well-being
      SDG 3 Good Health and Well-being

    Keywords

    • breast cancer
    • mammary stem cells
    • phenotype

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