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Microtubule plus-end dynamics link wound repair to the innate immune response.


ABSTRACT: The skin protects animals from infection and physical damage. In Caenorhabditis elegans, wounding the epidermis triggers an immune reaction and a repair response, but it is not clear how these are coordinated. Previous work implicated the microtubule cytoskeleton in the maintenance of epidermal integrity (Chuang et al., 2016). Here, by establishing a simple wounding system, we show that wounding provokes a reorganisation of plasma membrane subdomains. This is followed by recruitment of the microtubule plus end-binding protein EB1/EBP-2 around the wound and actin ring formation, dependent on ARP2/3 branched actin polymerisation. We show that microtubule dynamics are required for the recruitment and closure of the actin ring, and for the trafficking of the key signalling protein SLC6/SNF-12 toward the injury site. Without SNF-12 recruitment, there is an abrogation of the immune response. Our results suggest that microtubule dynamics coordinate the cytoskeletal changes required for wound repair and the concomitant activation of innate immunity.

SUBMITTER: Taffoni C 

PROVIDER: S-EPMC7043892 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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Microtubule plus-end dynamics link wound repair to the innate immune response.

Taffoni Clara C   Omi Shizue S   Huber Caroline C   Mailfert Sébastien S   Fallet Mathieu M   Rupprecht Jean-François JF   Ewbank Jonathan J JJ   Pujol Nathalie N  

eLife 20200129


The skin protects animals from infection and physical damage. In <i>Caenorhabditis elegans,</i> wounding the epidermis triggers an immune reaction and a repair response, but it is not clear how these are coordinated. Previous work implicated the microtubule cytoskeleton in the maintenance of epidermal integrity (Chuang et al., 2016). Here, by establishing a simple wounding system, we show that wounding provokes a reorganisation of plasma membrane subdomains. This is followed by recruitment of th  ...[more]

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