Phase separation of an actin nucleator by junctional microtubules regulates epithelial function

DOI IR (HANDLE) HANDLE Web Site PubMed 1 Citations 37 References Open Access

Description

Liquid-liquid phase separation (LLPS) is involved in various dynamic biological phenomena. In epithelial cells, dynamic regulation of junctional actin filaments tethered to the apical junctional complex (AJC) is critical for maintaining internal homeostasis against external perturbations; however, the role of LLPS in this process remains unknown. Here, after identifying a multifunctional actin nucleator, cordon bleu (Cobl), as an AJC-enriched microtubule-associated protein, we conducted comprehensive in vitro and in vivo analyses. We found that apical microtubules promoted LLPS of Cobl at the AJC, and Cobl actin assembly activity increased upon LLPS. Thus, microtubules spatiotemporally regulated junctional actin assembly for epithelial morphogenesis and paracellular barriers. Collectively, these findings established that LLPS of the actin nucleator Cobl mediated dynamic microtubule-actin cross-talk in junctions, which fine-tuned the epithelial barrier.

Journal

  • Science Advances

    Science Advances 9 (7), eadf6358-, 2023-02

    American Association for the Advancement of Science (AAAS)

Citations (1)*help

See more

References(37)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top