CDC20B is required for deuterosome-mediated centriole production in 1 multiciliated cells

Diego R Revinski (1) , Laure-Emmanuelle Zaragosi (2) , Camille Boutin (1) , Marie Deprez (2) , Virginie Thomé (1) , Olivier Rosnet (3) , Anne-Sophie Gay (2) , Agnès Paquet (2) , Nicolas Pons (2) , Gilles Ponzio (2) , Brice Marcet (2) , Laurent Kodjabachian (1) , Pascal Barbry (2)

1 IBDM - Institut de Biologie du Développement de Marseille
2 IPMC - Institut de pharmacologie moléculaire et cellulaire
3 CRCM - Centre de Recherche en Cancérologie de Marseille

Multiciliated cells (MCCs) harbor dozens to hundreds of motile cilia, which generate hydrodynamic forces important in animal physiology. In vertebrates, MCC differentiation involves massive centriole production by poorly characterized structures called deuterosomes. Here, single-cell RNA sequencing reveals that human deuterosome stage MCCs are characterized by the expression of many cell cycle-related genes. We further investigated the uncharacterized vertebrate-specific cell division cycle 20B (CDC20B) gene, which hosts microRNA-449abc. We show that CDC20B protein associates to deuterosomes and is required for centriole release and subsequent cilia production in mouse and Xenopus MCCs. CDC20B interacts with PLK1, a kinase known to coordinate centriole disengagement with the protease Separase in mitotic cells. Strikingly, over-expression of Separase rescues centriole disengagement and cilia production in CDC20B-deficient MCCs. This work reveals the shaping of deuterosome-mediated centriole production in vertebrate MCCs, by adaptation of canonical and recently evolved cell cycle-related molecules.

Mots clés: multiciliated cell; centriole; deuterosome; motile cilia; CDC20B; Separase; PLK1; 16 cell cycle; Xenopus; mouse; human; multiciliated cell

Domaines: Biologie cellulaire

Diego R Revinski, Laure-Emmanuelle Zaragosi, Camille Boutin, Marie Deprez, Virginie Thomé, et al.. CDC20B is required for deuterosome-mediated centriole production in 1 multiciliated cells. Nature Communications, 2018, 9, pp.4668. ⟨10.1038/s41467-018-06768-z⟩. ⟨hal-02064869⟩