The Wnt/PCP formin Daam1 drives cell-cell adhesion during nephron development

Vanja Krneta-Stankic, Mark E. Corkins, Adriana Paulucci-Holthauzen, Malgorzata Kloc, Andrew B. Gladden, Rachel K. Miller

Research output: Contribution to journalArticlepeer-review

Abstract

E-cadherin junctions facilitate assembly and disassembly of cell contacts that drive development and homeostasis of epithelial tissues. In this study, using Xenopus embryonic kidney and Madin-Darby canine kidney (MDCK) cells, we investigate the role of the Wnt/planar cell polarity (PCP) formin Daam1 (Dishevelled-associated activator of morphogenesis 1) in regulating E-cadherin-based intercellular adhesion. Using live imaging, we show that Daam1 localizes to newly formed cell contacts in the developing nephron. Furthermore, analyses of junctional filamentous actin (F-actin) upon Daam1 depletion indicate decreased microfilament localization and slowed turnover. We also show that Daam1 is necessary for efficient and timely localization of junctional E-cadherin, mediated by Daam1’s formin homology domain 2 (FH2). Finally, we establish that Daam1 signaling promotes organized movement of renal cells. This study demonstrates that Daam1 formin junctional activity is critical for epithelial tissue organization.

Original languageEnglish (US)
Article number109340
JournalCell Reports
Volume36
Issue number1
DOIs
StatePublished - Jul 6 2021

Keywords

  • Daam1
  • E-cadherin
  • F-actin
  • Wnt
  • Xenopus
  • adhesion
  • formin
  • kidney
  • nephron
  • tubulogenesis

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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