Entosis Is Induced by Glucose Starvation

Jens C. Hamann, Alexandra Surcel, Ruoyao Chen, Carolyn Teragawa, John Albeck, Douglas N. Robinson, Michael Overholtzer

Research output: Contribution to journalArticle

48 Scopus citations

Abstract

Entosis is a mechanism of cell death that involves neighbor cell ingestion. This process occurs in cancers and promotes a form of cell competition, where winner cells engulf and kill losers. Entosis is driven by a mechanical differential that allows softer cells to eliminate stiffer cells. While this process can be induced by matrix detachment, whether other stressors can activate entosis is unknown. Here, we find that entosis is induced in adherent cells by glucose withdrawal. Glucose withdrawal leads to a bimodal distribution of cells based on their deformability, where stiffer cells appear in a manner requiring the energy-sensing AMP-activated protein kinase (AMPK). We show that loser cells with high levels of AMPK activity are eliminated by winners through entosis, which supports winner cell proliferation under nutrient-deprived conditions. Our findings demonstrate that entosis serves as a cellular response to metabolic stress that enables nutrient recovery through neighbor cell ingestion.

Original languageEnglish (US)
Pages (from-to)201-210
Number of pages10
JournalCell Reports
Volume20
Issue number1
DOIs
StatePublished - Jul 5 2017

Keywords

  • AMPK
  • cannibalism
  • cell death
  • cell-in-cell
  • entosis
  • glucose starvation
  • myosin
  • tension

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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    Hamann, J. C., Surcel, A., Chen, R., Teragawa, C., Albeck, J., Robinson, D. N., & Overholtzer, M. (2017). Entosis Is Induced by Glucose Starvation. Cell Reports, 20(1), 201-210. https://doi.org/10.1016/j.celrep.2017.06.037