A potential link between p53, cell competition and ribosomopathy in mammals and in Drosophila

Nicholas E. Baker, Marianthi Kiparaki, Chaitali Khan

Research output: Contribution to journalComment/debate

2 Scopus citations


The term cell competition has been used to describe the phenomenon whereby particular cells can be eliminated during tissue growth only when more competitive cells are available to replace them. Multiple examples implicate differential activity of p53 in cell competition in mammals, but p53 has not been found to have the same role in Drosophila, where the phenomenon of cell competition was first recognized. Recent studies now show that Drosophila cells harboring mutations in Ribosomal protein (Rp) genes, which are eliminated by cell competition with wild type cells, activate a p53 target gene, Xrp1. In Diamond Blackfan Anemia, human Rp mutants activate p53 itself, through a nucleolar stress pathway. These results suggest a link between mammalian and Drosophila Rp mutants, translation, and cell competition.

Original languageEnglish (US)
Pages (from-to)17-19
Number of pages3
JournalDevelopmental Biology
Issue number1
StatePublished - Feb 1 2019



  • Cell competition
  • Diamond Blackfan Anemia
  • Minute
  • P53
  • Ribosomal protein

ASJC Scopus subject areas

  • Molecular Biology
  • Developmental Biology
  • Cell Biology

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