The dynamics of hippo signaling during drosophila wing development

Yuanwang Pan, Herve Aleǵot, Cordelia Rauskolb, Kenneth D. Irvine

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Tissue growth needs to be properly controlled for organs to reach their correct size and shape, but the mechanisms that control growth during normal development are not fully understood. We report here that the activity of the Hippo signaling transcriptional activator Yorkie gradually decreases in the central region of the developing Drosophila wing disc. Spatial and temporal changes in Yorkie activity can be explained by changes in cytoskeletal tension and biomechanical regulators of Hippo signaling. These changes in cellular biomechanics correlate with changes in cell density, and experimental manipulations of cell density are sufficient to alter biomechanical Hippo signaling and Yorkie activity. We also relate the pattern of Yorkie activity in older discs to patterns of cell proliferation. Our results establish that spatial and temporal patterns of Hippo signaling occur during wing development, that these patterns depend upon cell-density modulated tissue mechanics and that they contribute to the regulation of wing cell proliferation.

Original languageEnglish (US)
Article numberdev165712
JournalDevelopment (Cambridge)
Volume145
Issue number20
DOIs
StatePublished - 2018

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Developmental Biology

Keywords

  • Biomechanics
  • Hippo
  • Organ growth
  • Stress
  • Yorkie

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