Kindlin2 enables EphB/ephrinB bi-directional signaling to support vascular development

Wenqing Li, Lai Wen, Bhavisha Rathod, Anne Claude Gingras, Klaus Ley, Ho Sup Lee

Research output: Contribution to journalArticlepeer-review

Abstract

Direct contact between cells expressing either ephrin ligands or Eph receptor tyrosine kinase produces diverse developmental responses. Transmembrane ephrinB ligands play active roles in transducing bi-directional signals downstream of EphB/ephrinB interaction. However, it has not been well understood how ephrinB relays transcellular signals to neighboring cells and what intracellular effectors are involved. Here, we report that kindlin2 can mediate bi-directional ephrinB signaling through binding to a highly conserved NIYY motif in the ephrinB2 cytoplasmic tail. We show this interaction is important for EphB/ephrinB-mediated integrin activation in mammalian cells and for blood vessel morphogenesis during zebrafish development. A mixed two-cell population study revealed that kindlin2 (in ephrinB2-expressing cells) modulates transcellular EphB4 activation by promoting ephrinB2 clustering. This mechanism is also operative for EphB2/ephrinB1, suggesting that kindlin2-mediated regulation is conserved for EphB/ephrinB signaling pathways. Together, these findings show that kindlin2 enables EphB4/ephrinB2 bi-directional signal transmission.

Original languageEnglish (US)
JournalLife Science Alliance
Volume6
Issue number3
DOIs
StatePublished - Mar 1 2023

ASJC Scopus subject areas

  • Ecology
  • Biochemistry, Genetics and Molecular Biology (miscellaneous)
  • Plant Science
  • Health, Toxicology and Mutagenesis

Fingerprint

Dive into the research topics of 'Kindlin2 enables EphB/ephrinB bi-directional signaling to support vascular development'. Together they form a unique fingerprint.

Cite this