Giada Vanni, Anna Citron, Ambela Suli, Paolo Contessotto, Robin Caire, Alessandro Gandin, Giovanna Mantovan, Francesca Zanconato, Giovanna Brusatin, Michele Di Palma, Elisa Peirano, Lisa Sofia Pozzer, Carlo Albanese Jr, Roberto A. Steiner, Michelangelo Cordenonsi, Tito Panciera, Stefano Piccolo
{"title":"Microtubule architecture connects AMOT stability to YAP/TAZ mechanotransduction and Hippo signalling","authors":"Giada Vanni, Anna Citron, Ambela Suli, Paolo Contessotto, Robin Caire, Alessandro Gandin, Giovanna Mantovan, Francesca Zanconato, Giovanna Brusatin, Michele Di Palma, Elisa Peirano, Lisa Sofia Pozzer, Carlo Albanese Jr, Roberto A. Steiner, Michelangelo Cordenonsi, Tito Panciera, Stefano Piccolo","doi":"10.1038/s41556-025-01773-z","DOIUrl":null,"url":null,"abstract":"Cellular mechanotransduction is a key informational system, yet its mechanisms remain elusive. Here we unveil the role of microtubules in mechanosignalling, operating downstream of subnuclear F-actin and nuclear envelope mechanics. Upon mechanical activation, microtubules reorganize from a perinuclear cage into a radial array nucleated by centrosomes. This structural rearrangement triggers degradation of AMOT proteins, which we identify as key mechanical rheostats that sequester YAP/TAZ in the cytoplasm. AMOT is stable in mechano-OFF but degraded in mechano-ON cell states, where microtubules allow AMOT rapid transport to the pericentrosomal proteasome in complex with dynein/dynactin. This process ensures swift control of YAP/TAZ function in response to changes in cell mechanics, with experimental loss of AMOT proteins rendering cells insensitive to mechanical modulations. Ras/RTK oncogenes promote YAP/TAZ-dependent tumorigenesis by corrupting this AMOT-centred mechanical checkpoint. Notably, the Hippo pathway fine-tunes mechanotransduction: LATS kinases phosphorylate AMOT, shielding it from degradation, thereby indirectly restraining YAP/TAZ. Thus, AMOT protein stability serves as a hub linking cytoskeletal reorganization and Hippo signalling to YAP/TAZ mechanosignalling. Vanni et al. show a role for microtubules in YAP/TAZ mechanosignalling. Mechanoresponsive microtubule reorganization into centrosomal arrays allows for AMOT delivery to pericentrosomal proteasomes and degradation, leading to YAP/TAZ activation.","PeriodicalId":18977,"journal":{"name":"Nature Cell Biology","volume":"27 10","pages":"1725-1738"},"PeriodicalIF":19.1000,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s41556-025-01773-z.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Cell Biology","FirstCategoryId":"99","ListUrlMain":"https://www.nature.com/articles/s41556-025-01773-z","RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CELL BIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Cellular mechanotransduction is a key informational system, yet its mechanisms remain elusive. Here we unveil the role of microtubules in mechanosignalling, operating downstream of subnuclear F-actin and nuclear envelope mechanics. Upon mechanical activation, microtubules reorganize from a perinuclear cage into a radial array nucleated by centrosomes. This structural rearrangement triggers degradation of AMOT proteins, which we identify as key mechanical rheostats that sequester YAP/TAZ in the cytoplasm. AMOT is stable in mechano-OFF but degraded in mechano-ON cell states, where microtubules allow AMOT rapid transport to the pericentrosomal proteasome in complex with dynein/dynactin. This process ensures swift control of YAP/TAZ function in response to changes in cell mechanics, with experimental loss of AMOT proteins rendering cells insensitive to mechanical modulations. Ras/RTK oncogenes promote YAP/TAZ-dependent tumorigenesis by corrupting this AMOT-centred mechanical checkpoint. Notably, the Hippo pathway fine-tunes mechanotransduction: LATS kinases phosphorylate AMOT, shielding it from degradation, thereby indirectly restraining YAP/TAZ. Thus, AMOT protein stability serves as a hub linking cytoskeletal reorganization and Hippo signalling to YAP/TAZ mechanosignalling. Vanni et al. show a role for microtubules in YAP/TAZ mechanosignalling. Mechanoresponsive microtubule reorganization into centrosomal arrays allows for AMOT delivery to pericentrosomal proteasomes and degradation, leading to YAP/TAZ activation.
期刊介绍:
Nature Cell Biology, a prestigious journal, upholds a commitment to publishing papers of the highest quality across all areas of cell biology, with a particular focus on elucidating mechanisms underlying fundamental cell biological processes. The journal's broad scope encompasses various areas of interest, including but not limited to:
-Autophagy
-Cancer biology
-Cell adhesion and migration
-Cell cycle and growth
-Cell death
-Chromatin and epigenetics
-Cytoskeletal dynamics
-Developmental biology
-DNA replication and repair
-Mechanisms of human disease
-Mechanobiology
-Membrane traffic and dynamics
-Metabolism
-Nuclear organization and dynamics
-Organelle biology
-Proteolysis and quality control
-RNA biology
-Signal transduction
-Stem cell biology