Mutations in TMEM216 perturb ciliogenesis and cause Joubert, Meckel and related syndromes

Joubert syndrome (JBTS), related disorders (JSRD) and Meckel syndrome (MKS) are ciliopathies. We now report that MKS2 and JBTS2 loci are allelic and due to mutations in TMEM216, encoding an uncharacterized tetraspan transmembrane protein. JBTS2 patients displayed frequent nephronophthisis and polyda...

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Detalles Bibliográficos
Autores principales: Valente, Enza Maria, Logan, Clare V., Mougou-Zerelli, Soumaya, Lee, Jeong Ho, Silhavy, Jennifer L., Brancati, Francesco, Iannicelli, Miriam, Travaglini, Lorena, Romani, Sveva, Illi, Barbara, Adams, Matthew, Szymanska, Katarzyna, Mazzotta, Annalisa, Lee, Ji Eun, Tolentino, Jerlyn C., Swistun, Dominika, Salpietro, Carmelo D., Fede, Carmelo, Gabriel, Stacey, Russ, Carsten, Cibulskis, Kristian, Sougnez, Carrie, Hildebrandt, Friedhelm, Otto, Edgar A., Held, Susanne, Diplas, Bill H., Davis, Erica, Mikula, Mario, Strom, Charles M., Ben-Ze’ev, Bruria, Lev, Dorit, Sagie, Tally Lerman, Michelson, Marina, Yaron, Yuval, Krause, Amanda, Boltshauser, Eugen, Elkhartoufi, Nadia, Roume, Joelle, Shalev, Stavit, Munnich, Arnold, Saunier, Sophie, Inglehearn, Chris, Saad, Ali, Alkindy, Adila, Thomas, Sophie, Vekemans, Michel, Dallapiccola, Bruno, Katsanis, Nicholas, Johnson, Colin A., Attié-Bitach, Tania, Gleeson, Joseph G.
Formato: Texto
Lenguaje:English
Publicado: 2010
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2894012/
https://www.ncbi.nlm.nih.gov/pubmed/20512146
http://dx.doi.org/10.1038/ng.594
Descripción
Sumario:Joubert syndrome (JBTS), related disorders (JSRD) and Meckel syndrome (MKS) are ciliopathies. We now report that MKS2 and JBTS2 loci are allelic and due to mutations in TMEM216, encoding an uncharacterized tetraspan transmembrane protein. JBTS2 patients displayed frequent nephronophthisis and polydactytly, and two cases conformed to the Oro-Facio-Digital type VI phenotype, whereas skeletal dysplasia was common in MKS fetuses. A single p.R73L mutation was identified in all patients of Ashkenazi Jewish descent (n=10). TMEM216 localized to the base of primary cilia, and loss of TMEM216 in patient fibroblasts or following siRNA knockdown caused defective ciliogenesis and centrosomal docking, with concomitant hyperactivation of RhoA and Dishevelled. TMEM216 complexed with Meckelin, encoded by a gene also mutated in JSRD and MKS. Abrogation of tmem216 expression in zebrafish led to gastrulation defects that overlap with other ciliary morphants. The data implicate a new family of proteins in the ciliopathies, and further support allelism between ciliopathy disorders.

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