Biallelic mutations in SNX14 cause a syndromic form of cerebellar atrophy and lysosome-autophagosome dysfunction
| Autor: | Keith K. Vaux, Mahmut Şamil Sağıroğlu, Laila Bastaki, Seth J. Field, Pascale de Lonlay, Sawsan Abdel-Hadi, Lihadh Al-Gazali, Hülya Kayserili, Ali Dursun, Jeffrey D. Esko, Eric Scott, Xin Wang, Faezeh Mojahedi, Ashleigh E. Schaffer, R. Köksal Özgül, Iman G. Mahmoud, Isabelle Desguerre, Matthew D. Buschman, Laila Selim, Samia A. Temtamy, Jean-Laurent Casanova, Murat Gunel, Abdelrahim Abdrabou Sadek, Philip L.S.M. Gordts, Brett Copeland, Mona Aglan, Amira Masri, Maha S. Zaki, Joseph G. Gleeson, Matloob Azam, Naiara Akizu, Vincent Cantagrel, Antoinette Gelot, Basak Rosti, Jennifer L. Silhavy, Esra Dikoglu, Ulrich Müller, Amera El Badawy, Gennaro Napolitano, Stacey Gabriel, Rasim Ozgur Rosti, Jana Schroth, Samira Ismail, Ghada M H Abdel-Salam |
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| Přispěvatelé: | İç Hastalıkları, Akizu, Naiara, Cantagrel, Vincent, Zaki, Maha S., Al-Gazali, Lihadh, Wang, Xin, Rosti, Rasim Ozgur, Dikoglu, Esra, Gelot, Antoinette Bernabe, Rosti, Basak, Vaux, Keith K., Scott, Eric M., Silhavy, Jennifer L., Schroth, Jana, Copeland, Brett, Schaffer, Ashleigh E., Gordts, Philip L. S. M., Esko, Jeffrey D., Buschman, Matthew D., Field, Seth J., Napolitano, Gennaro, Abdel-Salam, Ghada M., Ozgul, R Koksal, Saglroglu, Mahmut Samil, Azam, Matloob, Ismail, Samira, Aglan, Mona, Selim, Laila, Mahmoud, Iman G., Abdel-Hadi, Sawsan, Badawy, Amera El, Sadek, Abdelrahim A., Mojahedi, Faezeh, Kayserili, Hulya, Masri, Amira, Bastaki, Laila, Temtamy, Samia, Müller, Ulrich, Desguerre, Isabelle, Casanova, Jean-Laurent, Dursun, Ali, Gunel, Murat, Gabriel, Stacey B., De Lonlay, Pascale, Gleeson, Joseph G. |
| Rok vydání: | 2015 |
| Předmět: |
Male
Autophagosome medicine.disease_cause Medical and Health Sciences Lysosomal Storage Disease Gene Frequency Cerebellum Phagosomes Child Sorting Nexins Phagosome Zebrafish 2. Zero hunger Genetics Mutation Cerebellar Disease Syndrome Biological Sciences Lysosome Cell biology medicine.anatomical_structure Child Preschool Female Cerebellar atrophy medicine.symptom Human Ataxia Endosome Biology Article Cerebellar Diseases Clinical Research Autophagy medicine Animals Humans Spinocerebellar Ataxias Preschool Spinocerebellar Ataxia Animal Sorting Nexin Infant Brain Disorders Lysosomal Storage Diseases Sorting nexin Atrophy Lod Score Lysosomes Developmental Biology |
| Zdroj: | Nature genetics, vol 47, iss 5 Nature genetics |
| ISSN: | 1546-1718 1061-4036 |
| Popis: | Pediatric-onset ataxias often present clinically as developmental delay and intellectual disability, with prominent cerebellar atrophy as a key neuroradiographic finding. Here we describe a new clinically distinguishable recessive syndrome in 12 families with cerebellar atrophy together with ataxia, coarsened facial features and intellectual disability, due to truncating mutations in the sorting nexin gene SNX14, encoding a ubiquitously expressed modular PX domain-containing sorting factor. We found SNX14 localized to lysosomes and associated with phosphatidylinositol (3,5)-bisphosphate, a key component of late endosomes/lysosomes. Patient-derived cells showed engorged lysosomes and a slower autophagosome clearance rate upon autophagy induction by starvation. Zebrafish morphants for snx14 showed dramatic loss of cerebellar parenchyma, accumulation of autophagosomes and activation of apoptosis. Our results characterize a unique ataxia syndrome due to biallelic SNX14 mutations leading to lysosome-autophagosome dysfunction. |
| Databáze: | OpenAIRE |
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