Recruitment of Jub by α-catenin promotes Yki activity and Drosophila wing growth

Herve Alégot, Christopher Markosian, Cordelia Rauskolb, Janice Yang, Elmira Kirichenko, Yu Chiun Wang, Kenneth D. Irvine

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The Hippo signaling network controls organ growth through YAP family transcription factors, including the Drosophila Yorkie protein. YAP activity is responsive to both biochemical and biomechanical cues, with one key input being tension within the F-actin cytoskeleton. Several potential mechanisms for the biomechanical regulation of YAP proteins have been described, including tension-dependent recruitment of Ajuba family proteins, which inhibit kinases that inactivate YAP proteins, to adherens junctions. Here, we investigate the mechanism by which the Drosophila Ajuba family protein Jub is recruited to adherens junctions, and the contribution of this recruitment to the regulation of Yorkie. We identify α-catenin as the mechanotransducer responsible for tension-dependent recruitment of Jub by identifying a region of α-catenin that associates with Jub, and by identifying a region, which when deleted, allows constitutive, tension-independent recruitment of Jub. We also show that increased Jub recruitment to α-catenin is associated with increased Yorkie activity and wing growth, even in the absence of increased cytoskeletal tension. Our observations establish α-catenin as a multi-functional mechanotransducer and confirm Jub recruitment to α-catenin as a key contributor to biomechanical regulation of Hippo signaling.

Original languageEnglish (US)
Article numberjcs222018
JournalJournal of cell science
Volume132
Issue number5
DOIs
StatePublished - Mar 1 2019

Fingerprint

Catenins
Drosophila
Adherens Junctions
Growth
Proteins
Actin Cytoskeleton
Cues
Actins
Transcription Factors
Phosphotransferases

All Science Journal Classification (ASJC) codes

  • Cell Biology

Keywords

  • Ajuba
  • Growth
  • Hippo
  • Mechanotransduction
  • Tension

Cite this

Alégot, H., Markosian, C., Rauskolb, C., Yang, J., Kirichenko, E., Wang, Y. C., & Irvine, K. D. (2019). Recruitment of Jub by α-catenin promotes Yki activity and Drosophila wing growth. Journal of cell science, 132(5), [jcs222018]. https://doi.org/10.1242/jcs.222018
Alégot, Herve ; Markosian, Christopher ; Rauskolb, Cordelia ; Yang, Janice ; Kirichenko, Elmira ; Wang, Yu Chiun ; Irvine, Kenneth D. / Recruitment of Jub by α-catenin promotes Yki activity and Drosophila wing growth. In: Journal of cell science. 2019 ; Vol. 132, No. 5.
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Alégot, H, Markosian, C, Rauskolb, C, Yang, J, Kirichenko, E, Wang, YC & Irvine, KD 2019, 'Recruitment of Jub by α-catenin promotes Yki activity and Drosophila wing growth', Journal of cell science, vol. 132, no. 5, jcs222018. https://doi.org/10.1242/jcs.222018

Recruitment of Jub by α-catenin promotes Yki activity and Drosophila wing growth. / Alégot, Herve; Markosian, Christopher; Rauskolb, Cordelia; Yang, Janice; Kirichenko, Elmira; Wang, Yu Chiun; Irvine, Kenneth D.

In: Journal of cell science, Vol. 132, No. 5, jcs222018, 01.03.2019.

Research output: Contribution to journalArticle

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AU - Alégot, Herve

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AU - Kirichenko, Elmira

AU - Wang, Yu Chiun

AU - Irvine, Kenneth D.

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Alégot H, Markosian C, Rauskolb C, Yang J, Kirichenko E, Wang YC et al. Recruitment of Jub by α-catenin promotes Yki activity and Drosophila wing growth. Journal of cell science. 2019 Mar 1;132(5). jcs222018. https://doi.org/10.1242/jcs.222018