27 results on '"Hjeij, Rim"'
Search Results
2. Recessively Inherited Deficiency of Secreted WFDC2 (HE4) Causes Nasal Polyposis and Bronchiectasis.
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Dougherty, Gerard W., Ostrowski, Lawrence E., Nöthe-Menchen, Tabea, Raidt, Johanna, Schramm, Andre, Olbrich, Heike, Yin, Weining, Sears, Patrick R., Dang, Hong, Smith, Amanda J., Beule, Achim G., Hjeij, Rim, Rutjes, Niels, Haarman, Eric G., Maas, Saskia M., Ferkol, Thomas W., Noone, Peadar G., Olivier, Kenneth N., Bracht, Diana C., and Barbry, Pascal
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BRONCHIECTASIS ,NASAL polyps ,CILIARY motility disorders ,PSEUDOMONAS aeruginosa infections ,PRIMARY immunodeficiency diseases ,IDIOPATHIC diseases - Abstract
Rationale: Bronchiectasis is a pathological dilatation of the bronchi in the respiratory airways associated with environmental or genetic causes (e.g., cystic fibrosis, primary ciliary dyskinesia, and primary immunodeficiency disorders), but most cases remain idiopathic. Objectives: To identify novel genetic defects in unsolved cases of bronchiectasis presenting with severe rhinosinusitis, nasal polyposis, and pulmonary Pseudomonas aeruginosa infection. Methods: DNA was analyzed by next-generation or targeted Sanger sequencing. RNA was analyzed by quantitative PCR and single-cell RNA sequencing. Patient-derived cells, cell cultures, and secretions (mucus, saliva, seminal fluid) were analyzed by Western blotting and immunofluorescence microscopy, and mucociliary activity was measured. Blood serum was analyzed by electrochemiluminescence immunoassay. Protein structure and proteomic analyses were used to assess the impact of a disease-causing founder variant. Measurements and Main Results: We identified biallelic pathogenic variants in WAP four-disulfide core domain 2 (WFDC2) in 11 individuals from 10 unrelated families originating from the United States, Europe, Asia, and Africa. Expression of WFDC2 was detected predominantly in secretory cells of control airway epithelium and also in submucosal glands. We demonstrate that WFDC2 is below the limit of detection in blood serum and hardly detectable in samples of saliva, seminal fluid, and airway surface liquid from WFDC2-deficient individuals. Computer simulations and deglycosylation assays indicate that the disease-causing founder variant p.Cys49Arg structurally hampers glycosylation and, thus, secretion of mature WFDC2. Conclusions:WFDC2 dysfunction defines a novel molecular etiology of bronchiectasis characterized by the deficiency of a secreted component of the airways. A commercially available blood test combined with genetic testing allows its diagnosis. [ABSTRACT FROM AUTHOR]
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- 2024
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3. Biallelic Variants in MNS1 Are Associated with Laterality Defects and Respiratory Involvement.
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Hjeij, Rim, Leslie, Joseph, Rizk, Hoda, Dworniczak, Bernd, Olbrich, Heike, Raidt, Johanna, Bode, Sebastian Felix Nepomuk, Gardham, Alice, Stals, Karen, Al-Haggar, Mohammad, Osman, Engy, Crosby, Andrew, Eldesoky, Tarek, Baple, Emma, and Omran, Heymut
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CILIA & ciliary motion , *SITUS inversus , *RESPIRATORY distress syndrome , *LATERAL dominance , *CILIARY motility disorders , *RESPIRATORY infections - Abstract
Defects in motile cilia, termed motile ciliopathies, result in clinical manifestations affecting the respiratory and reproductive system, as well as laterality defects and hydrocephalus. We previously defined biallelic MNS1 variants causing situs inversus and male infertility, mirroring the findings in Mns1−/− mice. Here, we present clinical and genomic findings in five newly identified individuals from four unrelated families affected by MNS1-related disorder. Ciliopathy panel testing and whole exome sequencing identified one previously reported and two novel MNS1 variants extending the genotypic spectrum of disease. A broad spectrum of laterality defects including situs inversus totalis and heterotaxia was confirmed. Interestingly, a single affected six-year-old girl homozygous for an MNS1 nonsense variant presented with a history of neonatal respiratory distress syndrome, recurrent respiratory tract infections, chronic rhinitis, and wet cough. Accordingly, immunofluorescence analysis showed the absence of MNS1 from the respiratory epithelial cells of this individual. Two other individuals with hypomorphic variants showed laterality defects and mild respiratory phenotype. This study represents the first observation of heterotaxia and respiratory disease in individuals with biallelic MNS1 variants, an important extension of the phenotype associated with MNS1-related motile ciliopathy disorder. [ABSTRACT FROM AUTHOR]
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- 2024
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4. CFAP45 deficiency causes situs abnormalities and asthenospermia by disrupting an axonemal adenine nucleotide homeostasis module
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Dougherty, Gerard W., Mizuno, Katsutoshi, Nöthe-Menchen, Tabea, Ikawa, Yayoi, Boldt, Karsten, Ta-Shma, Asaf, Aprea, Isabella, Minegishi, Katsura, Pang, Yuan-Ping, Pennekamp, Petra, Loges, Niki T., Raidt, Johanna, Hjeij, Rim, Wallmeier, Julia, Mussaffi, Huda, Perles, Zeev, Elpeleg, Orly, Rabert, Franziska, Shiratori, Hidetaka, Letteboer, Stef J., Horn, Nicola, Young, Samuel, Strünker, Timo, Stumme, Friederike, Werner, Claudius, Olbrich, Heike, Takaoka, Katsuyoshi, Ide, Takahiro, Twan, Wang Kyaw, Biebach, Luisa, Große-Onnebrink, Jörg, Klinkenbusch, Judith A., Praveen, Kavita, Bracht, Diana C., Höben, Inga M., Junger, Katrin, Gützlaff, Jana, Cindrić, Sandra, Aviram, Micha, Kaiser, Thomas, Memari, Yasin, Dzeja, Petras P., Dworniczak, Bernd, Ueffing, Marius, Roepman, Ronald, Bartscherer, Kerstin, Katsanis, Nicholas, Davis, Erica E., Amirav, Israel, Hamada, Hiroshi, and Omran, Heymut
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- 2020
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5. Immunofluorescence Analysis and Diagnosis of Primary Ciliary Dyskinesia with Radial Spoke Defects
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Frommer, Adrien, Hjeij, Rim, Loges, Niki T., Edelbusch, Christine, Jahnke, Charlotte, Raidt, Johanna, Werner, Claudius, Wallmeier, Julia, Groe-Onnebrink, Jörg, Olbrich, Heike, Cindrić, Sandra, Jaspers, Martine, Boon, Mieke, Memari, Yasin, Durbin, Richard, Kolb-Kokocinski, Anja, Sauer, Sascha, Marthin, June K., Nielsen, Kim G., Amirav, Israel, Elias, Nael, Kerem, Eitan, Shoseyov, David, Haeffner, Karsten, and Omran, Heymut
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- 2015
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6. Mutations in CCDC11, which Encodes a Coiled-Coil Containing Ciliary Protein, Causes Situs Inversus Due to Dysmotility of Monocilia in the Left–Right Organizer
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Narasimhan, Vijayashankaranarayanan, Hjeij, Rim, Vij, Shubha, Loges, Niki Tomas, Wallmeier, Julia, Koerner-Rettberg, Cordula, Werner, Claudius, Thamilselvam, Surin Kumar, Boey, Adrian, Choksi, Semil P., Pennekamp, Petra, Roy, Sudipto, and Omran, Heymut
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- 2015
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7. Recessive Mutations in CFAP74 Cause Primary Ciliary Dyskinesia with Normal Ciliary Ultrastructure.
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Biebach, Luisa, Cindrić, Sandra, Koenig, Julia, Aprea, Isabella, Dougherty, Gerard W., Raidt, Johanna, Bracht, Diana, Ruppel, Renate, Schreiber, Jens, Hjeij, Rim, Olbrich, Heike, and Omran, Heymut
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CILIARY motility disorders ,MUCOCILIARY system ,CILIA & ciliary motion ,RECEPTOR for advanced glycation end products (RAGE) ,CYTOLOGY ,MOLECULAR volume ,RESPIRATORY distress syndrome - Abstract
The article demonstrates abnormal ciliary beating and reduced mucociliary clearance responsible for the primary ciliary dyskinesia (PCD) phenotype in three affected individuals from two families with compound heterozygous mutations in cilia and flagella associated protein 74 (CFAP74). Topics discussed include multiple morphological abnormalities of the sperm flagella, transmission electron microscopy of respiratory cilia, and ciliary motility in respiratory epithelial cells.
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- 2022
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8. SPEF2- and HYDIN-Mutant Cilia Lack the Central Pair-associated Protein SPEF2, Aiding Primary Ciliary Dyskinesia Diagnostics.
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Cindrić, Sandra, Dougherty, Gerard W., Olbrich, Heike, Hjeij, Rim, Loges, Niki Tomas, Amirav, Israel, Philipsen, Maria C., Marthin, June K., Nielsen, Kim G., Sutharsan, Sivagurunathan, Raidt, Johanna, Werner, Claudius, Pennekamp, Petra, Dworniczak, Bernd, and Omran, Heymut
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CILIARY motility disorders ,TRANSMISSION electron microscopy ,IMMUNOFLUORESCENCE ,NITRIC oxide ,MALE infertility - Abstract
Primary ciliary dyskinesia (PCD) is a genetically heterogeneous chronic destructive airway disease. PCD is traditionally diagnosed by nasal nitric oxide measurement, analysis of ciliary beating, transmission electron microscopy (TEM), and/or genetic testing. In most genetic PCD variants, laterality defects can occur. However, it is difficult to establish a diagnosis in individuals with PCD and central pair (CP) defects, and alternative strategies are required because of very subtle ciliary beating abnormalities, a normal ciliary ultrastructure, and normal situs composition. Mutations in HYDIN are known to cause CP defects, but the genetic analysis of HYDIN variants is confounded by the pseudogene HYDIN2, which is almost identical in terms of intron/exon structure. We have previously shown that several types of PCD can be diagnosed via immunofluorescence (IF) microscopy analyses. Here, using IF microscopy, we demonstrated that in individuals with PCD and CP defects, the CP-associated protein SPEF2 is absent in HYDIN-mutant cells, revealing its dependence on functional HYDIN. Next, we performed IF analyses of SPEF2 in respiratory cells from 189 individuals with suspected PCD and situs solitus. Forty-one of the 189 individuals had undetectable SPEF2 and were subjected to a genetic analysis, which revealed one novel loss-of-function mutation in SPEF2 and three reported and 13 novel HYDIN mutations in 15 individuals. The remaining 25 individuals are good candidates for new, as-yet uncharacterized PCD variants that affect the CP apparatus. SPEF2 mutations have been associated with male infertility but have not previously been identified to cause PCD. We identified a mutation of SPEF2 that is causative for PCD with a CP defect. We conclude that SPEF2 IF analyses can facilitate the detection of CP defects and evaluation of the pathogenicity of HYDIN variants, thus aiding the molecular diagnosis of CP defects. [ABSTRACT FROM AUTHOR]
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- 2020
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9. CiliaCarta: An integrated and validated compendium of ciliary genes.
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van Dam, Teunis J. P., Kennedy, Julie, van der Lee, Robin, de Vrieze, Erik, Wunderlich, Kirsten A., Rix, Suzanne, Dougherty, Gerard W., Lambacher, Nils J., Li, Chunmei, Jensen, Victor L., Leroux, Michel R., Hjeij, Rim, Horn, Nicola, Texier, Yves, Wissinger, Yasmin, van Reeuwijk, Jeroen, Wheway, Gabrielle, Knapp, Barbara, Scheel, Jan F., and Franco, Brunella
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CILIA & ciliary motion ,DEVELOPMENTAL biology ,CYTOLOGY ,GENES ,LIFE sciences ,OUTLINES - Abstract
The cilium is an essential organelle at the surface of mammalian cells whose dysfunction causes a wide range of genetic diseases collectively called ciliopathies. The current rate at which new ciliopathy genes are identified suggests that many ciliary components remain undiscovered. We generated and rigorously analyzed genomic, proteomic, transcriptomic and evolutionary data and systematically integrated these using Bayesian statistics into a predictive score for ciliary function. This resulted in 285 candidate ciliary genes. We generated independent experimental evidence of ciliary associations for 24 out of 36 analyzed candidate proteins using multiple cell and animal model systems (mouse, zebrafish and nematode) and techniques. For example, we show that OSCP1, which has previously been implicated in two distinct non-ciliary processes, causes ciliogenic and ciliopathy-associated tissue phenotypes when depleted in zebrafish. The candidate list forms the basis of CiliaCarta, a comprehensive ciliary compendium covering 956 genes. The resource can be used to objectively prioritize candidate genes in whole exome or genome sequencing of ciliopathy patients and can be accessed at . [ABSTRACT FROM AUTHOR]
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- 2019
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10. Mutations in SPAG1 Cause Primary Ciliary Dyskinesia Associated with Defective Outer and Inner Dynein Arms
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Chaki, Moumita, Raidt, Johanna, Jahnke, Charlotte, Dougherty, Gerard W., Hjeij, Rim, Werner, Claudius, Carson, Johnny L., Schueler, Markus, Gee, Heon Yung, Porath, Jonathan D., Wolf, Whitney E., Loges, Niki T., Wallmeier, Julia, Sagel, Scott D., Ostrowski, Lawrence E., Huang, Lu, Baktai, György, Braun, Daniela A., Olivier, Kenneth N., Hazucha, Milan J., Diaz, Katrina A., Knowles, Michael R., Dell, Sharon D., Otto, Edgar A., Hurd, Toby, Halbritter, Jan, Pennekamp, Petra, Olbrich, Heike, Davis, Stephanie D., Ferkol, Thomas W., Leigh, Margaret W., and Yin, Weining
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otorhinolaryngologic diseases - Abstract
Primary ciliary dyskinesia (PCD) is a genetically heterogeneous, autosomal-recessive disorder, characterized by oto-sino-pulmonary disease and situs abnormalities. PCD-causing mutations have been identified in 20 genes, but collectively they account for only ∼65% of all PCDs. To identify mutations in additional genes that cause PCD, we performed exome sequencing on three unrelated probands with ciliary outer and inner dynein arm (ODA+IDA) defects. Mutations in SPAG1 were identified in one family with three affected siblings. Further screening of SPAG1 in 98 unrelated affected individuals (62 with ODA+IDA defects, 35 with ODA defects, 1 without available ciliary ultrastructure) revealed biallelic loss-of-function mutations in 11 additional individuals (including one sib-pair). All 14 affected individuals with SPAG1 mutations had a characteristic PCD phenotype, including 8 with situs abnormalities. Additionally, all individuals with mutations who had defined ciliary ultrastructure had ODA+IDA defects. SPAG1 was present in human airway epithelial cell lysates but was not present in isolated axonemes, and immunofluorescence staining showed an absence of ODA and IDA proteins in cilia from an affected individual, thus indicating that SPAG1 probably plays a role in the cytoplasmic assembly and/or trafficking of the axonemal dynein arms. Zebrafish morpholino studies of spag1 produced cilia-related phenotypes previously reported for PCD-causing mutations in genes encoding cytoplasmic proteins. Together, these results demonstrate that mutations in SPAG1 cause PCD with ciliary ODA+IDA defects and that exome sequencing is useful to identify genetic causes of heterogeneous recessive disorders.
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- 2013
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11. ZMYND10 Is Mutated in Primary Ciliary Dyskinesia and Interacts with LRRC6
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Dell, Sharon D., Al-Mutairi, Dalal A., Hjeij, Rim, Leigh, Margaret W., Kohl, Stefan, Morgan, Lucy C., Olbrich, Heike, Porath, Jonathan D., Kurkowiak, Małgorzata, Gee, Heon Yung, Ferkol, Thomas W., Sagel, Scott D., Spear, Philip C., Dougherty, Gerard W., Hurd, Toby W., Hwang, Daw-Yang, Adan, Mohamed, Olivier, Kenneth N., Halbritter, Jan, Zariwala, Maimoona A., Wolf, Whitney E., Sheridan, Eamonn, Werner, Claudius, Batten, Trevor F.C., Chaki, Moumita, Rosenfeld, Margaret, Burns, Kimberlie A., Loges, Niki T., Esteve-Rudd, Julian, Lovric, Svjetlana, Diaz, Katrina A., and Pittman, Jessica E.
- Abstract
Defects of motile cilia cause primary ciliary dyskinesia (PCD), characterized by recurrent respiratory infections and male infertility. Using whole-exome resequencing and high-throughput mutation analysis, we identified recessive biallelic mutations in ZMYND10 in 14 families and mutations in the recently identified LRRC6 in 13 families. We show that ZMYND10 and LRRC6 interact and that certain ZMYND10 and LRRC6 mutations abrogate the interaction between the LRRC6 CS domain and the ZMYND10 C-terminal domain. Additionally, ZMYND10 and LRRC6 colocalize with the centriole markers SAS6 and PCM1. Mutations in ZMYND10 result in the absence of the axonemal protein components DNAH5 and DNALI1 from respiratory cilia. Animal models support the association between ZMYND10 and human PCD, given that zmynd10 knockdown in zebrafish caused ciliary paralysis leading to cystic kidneys and otolith defects and that knockdown in Xenopus interfered with ciliogenesis. Our findings suggest that a cytoplasmic protein complex containing ZMYND10 and LRRC6 is necessary for motile ciliary function.
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- 2013
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12. Homozygous loss-of-function mutations in MNS1 cause laterality defects and likely male infertility.
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Ta-Shma, Asaf, Hjeij, Rim, Perles, Zeev, Dougherty, Gerard W., Abu Zahira, Ibrahim, Letteboer, Stef J. F., Antony, Dinu, Darwish, Alaa, Mans, Dorus A., Spittler, Sabrina, Edelbusch, Christine, Cindrić, Sandra, Nöthe-Menchen, Tabea, Olbrich, Heike, Stuhlmann, Friederike, Aprea, Isabella, Pennekamp, Petra, Loges, Niki T., Breuer, Oded, and Shaag, Avraham
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GENETIC mutation , *MEIOSIS , *MALE infertility , *CILIA & ciliary motion , *IMMUNOPRECIPITATION - Abstract
The clinical spectrum of ciliopathies affecting motile cilia spans impaired mucociliary clearance in the respiratory system, laterality defects including heart malformations, infertility and hydrocephalus. Using linkage analysis and whole exome sequencing, we identified two recessive loss-of-function MNS1 mutations in five individuals from four consanguineous families: 1) a homozygous nonsense mutation p.Arg242* in four males with laterality defects and infertility and 2) a homozygous nonsense mutation p.Gln203* in one female with laterality defects and recurrent respiratory infections additionally carrying homozygous mutations in DNAH5. Consistent with the laterality defects observed in these individuals, we found Mns1 to be expressed in mouse embryonic ventral node. Immunofluorescence analysis further revealed that MNS1 localizes to the axonemes of respiratory cilia as well as sperm flagella in human. In-depth ultrastructural analyses confirmed a subtle outer dynein arm (ODA) defect in the axonemes of respiratory epithelial cells resembling findings reported in Mns1-deficient mice. Ultrastructural analyses in the female carrying combined mutations in MNS1 and DNAH5 indicated a role for MNS1 in the process of ODA docking (ODA-DC) in the distal respiratory axonemes. Furthermore, co-immunoprecipitation and yeast two hybrid analyses demonstrated that MNS1 dimerizes and interacts with the ODA docking complex component CCDC114. Overall, we demonstrate that MNS1 deficiency in humans causes laterality defects (situs inversus) and likely male infertility and that MNS1 plays a role in the ODA-DC assembly. [ABSTRACT FROM AUTHOR]
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- 2018
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13. DNAH11 Localization in the Proximal Region of Respiratory Cilia Defines Distinct Outer Dynein Arm Complexes.
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Dougherty, Gerard W., Loges, Niki T., Klinkenbusch, Judith A., Olbrich, Heike, Pennekamp, Petra, Menchen, Tabea, Raidt, Johanna, Wallmeier, Julia, Werner, Claudius, Westermann, Cordula, Ruckert, Christian, Mirra, Virginia, Hjeij, Rim, Memari, Yasin, Durbin, Richard, Kolb-Kokocinski, Anja, Praveen, Kavita, Kashef, Mohammad A., Kashef, Sara, and Eghtedari, Fardin
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- 2016
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14. Immuno fluorescence Analysis and Diagnosis of Primary Ciliary Dyskinesia with Radial Spoke Defects.
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Frommer, Adrien, Hjeij, Rim, Loges, Niki T., Edelbusch, Christine, Jahnke, Charlotte, Raidt, Johanna, Werner, Claudius, Wallmeier, Julia, Große-Onnebrink, Jörg, Olbrich, Heike, ć, Sandra Cindri, Jaspers, Martine, Boon, Mieke, Memari, Yasin, Durbin, Richard, Kolb-Kokocinski, Anja, Sauer, Sascha, Marthin, June K., Nielsen, Kim G., and Amirav, Israel
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- 2015
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15. CCDC151 Mutations Cause Primary Ciliary Dyskinesia by Disruption of the Outer Dynein Arm Docking Complex Formation.
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Hjeij, Rim, Onoufriadis, Alexandros, Watson, Christopher M., Slagle, Christopher E., Klena, Nikolai T., Dougherty, Gerard W., Kurkowiak, Małgorzata, Loges, Niki T., Diggle, Christine P., Morante, Nicholas F.C., Gabriel, George C., Lemke, Kristi L., Li, You, Pennekamp, Petra, Menchen, Tabea, Konert, Franziska, Marthin, June Kehlet, Mans, Dorus A., Letteboer, Stef J.F., and Werner, Claudius
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GENETIC mutation , *CILIARY motility disorders , *DYNEIN , *MOLECULAR docking , *CYTOSKELETAL proteins , *EXTRACELLULAR fluid , *TISSUE scaffolds - Abstract
A diverse family of cytoskeletal dynein motors powers various cellular transport systems, including axonemal dyneins generating the force for ciliary and flagellar beating essential to movement of extracellular fluids and of cells through fluid. Multisubunit outer dynein arm (ODA) motor complexes, produced and preassembled in the cytosol, are transported to the ciliary or flagellar compartment and anchored into the axonemal microtubular scaffold via the ODA docking complex (ODA-DC) system. In humans, defects in ODA assembly are the major cause of primary ciliary dyskinesia (PCD), an inherited disorder of ciliary and flagellar dysmotility characterized by chronic upper and lower respiratory infections and defects in laterality. Here, by combined high-throughput mapping and sequencing, we identified CCDC151 loss-of-function mutations in five affected individuals from three independent families whose cilia showed a complete loss of ODAs and severely impaired ciliary beating. Consistent with the laterality defects observed in these individuals, we found Ccdc151 expressed in vertebrate left-right organizers. Homozygous zebrafish ccdc151 ts272a and mouse Ccdc151 Snbl mutants display a spectrum of situs defects associated with complex heart defects. We demonstrate that CCDC151 encodes an axonemal coiled coil protein, mutations in which abolish assembly of CCDC151 into respiratory cilia and cause a failure in axonemal assembly of the ODA component DNAH5 and the ODA-DC-associated components CCDC114 and ARMC4. CCDC151- deficient zebrafish, planaria, and mice also display ciliary dysmotility accompanied by ODA loss. Furthermore, CCDC151 coimmunoprecipitates CCDC114 and thus appears to be a highly evolutionarily conserved ODA-DC-related protein involved in mediating assembly of both ODAs and their axonemal docking machinery onto ciliary microtubules. [ABSTRACT FROM AUTHOR]
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- 2014
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16. DYX1C1 is required for axonemal dynein assembly and ciliary motility.
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Tarkar, Aarti, Loges, Niki T, Slagle, Christopher E, Francis, Richard, Dougherty, Gerard W, Tamayo, Joel V, Shook, Brett, Cantino, Marie, Schwartz, Daniel, Jahnke, Charlotte, Olbrich, Heike, Werner, Claudius, Raidt, Johanna, Pennekamp, Petra, Abouhamed, Marouan, Hjeij, Rim, Köhler, Gabriele, Griese, Matthias, Li, You, and Lemke, Kristi
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DYNEIN genetics ,CILIARY motility disorders ,CELL migration ,DELETION mutation ,GENETIC mutation ,EPITHELIAL cells - Abstract
DYX1C1 has been associated with dyslexia and neuronal migration in the developing neocortex. Unexpectedly, we found that deleting exons 2-4 of Dyx1c1 in mice caused a phenotype resembling primary ciliary dyskinesia (PCD), a disorder characterized by chronic airway disease, laterality defects and male infertility. This phenotype was confirmed independently in mice with a Dyx1c1 c.T2A start-codon mutation recovered from an N-ethyl-N-nitrosourea (ENU) mutagenesis screen. Morpholinos targeting dyx1c1 in zebrafish also caused laterality and ciliary motility defects. In humans, we identified recessive loss-of-function DYX1C1 mutations in 12 individuals with PCD. Ultrastructural and immunofluorescence analyses of DYX1C1-mutant motile cilia in mice and humans showed disruptions of outer and inner dynein arms (ODAs and IDAs, respectively). DYX1C1 localizes to the cytoplasm of respiratory epithelial cells, its interactome is enriched for molecular chaperones, and it interacts with the cytoplasmic ODA and IDA assembly factor DNAAF2 (KTU). Thus, we propose that DYX1C1 is a newly identified dynein axonemal assembly factor (DNAAF4). [ABSTRACT FROM AUTHOR]
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- 2013
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17. ARMC4 Mutations Cause Primary Ciliary Dyskinesia with Randomization of Left/Right Body Asymmetry.
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Hjeij, Rim, Lindstrand, Anna, Francis, Richard, Zariwala, Maimoona?A., Liu, Xiaoqin, Li, You, Damerla, Rama, Dougherty, Gerard?W., Abouhamed, Marouan, Olbrich, Heike, Loges, Niki?T., Pennekamp, Petra, Davis, Erica?E., Carvalho, Claudia?M.B., Pehlivan, Davut, Werner, Claudius, Raidt, Johanna, Köhler, Gabriele, Häffner, Karsten, and Reyes-Mugica, Miguel
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GENETIC mutation , *RESPIRATORY infections , *MALE infertility , *CYTOPLASM , *RANDOMIZATION (Statistics) , *LATERAL dominance - Abstract
The motive forces for ciliary movement are generated by large multiprotein complexes referred to as outer dynein arms (ODAs), which are preassembled in the cytoplasm prior to transport to the ciliary axonemal compartment. In humans, defects in structural components, docking complexes, or cytoplasmic assembly factors can cause primary ciliary dyskinesia (PCD), a disorder characterized by chronic airway disease and defects in laterality. By using combined high resolution copy-number variant and mutation analysis, we identified ARMC4 mutations in twelve PCD individuals whose cells showed reduced numbers of ODAs and severely impaired ciliary beating. Transient suppression in zebrafish and analysis of an ENU mouse mutant confirmed in both model organisms that ARMC4 is critical for left-right patterning. We demonstrate that ARMC4 is an axonemal protein that is necessary for proper targeting and anchoring of ODAs. [ABSTRACT FROM AUTHOR]
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- 2013
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18. CCDC151 Mutations Cause Primary Ciliary Dyskinesia by Disruption of the Outer Dynein Arm Docking Complex Formation
- Author
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Hjeij, Rim, Onoufriadis, Alexandros, Watson, Christopher M., Slagle, Christopher E., Klena, Nikolai T., Dougherty, Gerard W., Kurkowiak, Małgorzata, Loges, Niki T., Diggle, Christine P., Morante, Nicholas F.C., Gabriel, George C., Lemke, Kristi L., Li, You, Pennekamp, Petra, Menchen, Tabea, Konert, Franziska, Marthin, June Kehlet, Mans, Dorus A., Letteboer, Stef J.F., Werner, Claudius, Burgoyne, Thomas, Westermann, Cordula, Rutman, Andrew, Carr, Ian M., O’Callaghan, Christopher, Moya, Eduardo, Chung, Eddie M.K., Sheridan, Eamonn, Nielsen, Kim G., Roepman, Ronald, Bartscherer, Kerstin, Burdine, Rebecca D., Lo, Cecilia W., Omran, Heymut, and Mitchison, Hannah M.
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Male ,Axoneme ,Immunoblotting ,Fluorescent Antibody Technique ,Article ,Mice ,Two-Hybrid System Techniques ,Genetics ,Animals ,Humans ,Immunoprecipitation ,Genetics(clinical) ,Exome ,Cilia ,Cells, Cultured ,In Situ Hybridization ,Zebrafish ,Mice, Knockout ,Kartagener Syndrome ,Axonemal Dyneins ,Embryo, Mammalian ,Pedigree ,Phenotype ,Mutation ,Female ,Microtubule-Associated Proteins - Abstract
A diverse family of cytoskeletal dynein motors powers various cellular transport systems, including axonemal dyneins generating the force for ciliary and flagellar beating essential to movement of extracellular fluids and of cells through fluid. Multisubunit outer dynein arm (ODA) motor complexes, produced and preassembled in the cytosol, are transported to the ciliary or flagellar compartment and anchored into the axonemal microtubular scaffold via the ODA docking complex (ODA-DC) system. In humans, defects in ODA assembly are the major cause of primary ciliary dyskinesia (PCD), an inherited disorder of ciliary and flagellar dysmotility characterized by chronic upper and lower respiratory infections and defects in laterality. Here, by combined high-throughput mapping and sequencing, we identified CCDC151 loss-of-function mutations in five affected individuals from three independent families whose cilia showed a complete loss of ODAs and severely impaired ciliary beating. Consistent with the laterality defects observed in these individuals, we found Ccdc151 expressed in vertebrate left-right organizers. Homozygous zebrafish ccdc151(ts272a) and mouse Ccdc151(Snbl) mutants display a spectrum of situs defects associated with complex heart defects. We demonstrate that CCDC151 encodes an axonemal coiled coil protein, mutations in which abolish assembly of CCDC151 into respiratory cilia and cause a failure in axonemal assembly of the ODA component DNAH5 and the ODA-DC-associated components CCDC114 and ARMC4. CCDC151-deficient zebrafish, planaria, and mice also display ciliary dysmotility accompanied by ODA loss. Furthermore, CCDC151 coimmunoprecipitates CCDC114 and thus appears to be a highly evolutionarily conserved ODA-DC-related protein involved in mediating assembly of both ODAs and their axonemal docking machinery onto ciliary microtubules.
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19. Recessive DNAH9 Loss-of-Function Mutations Cause Laterality Defects and Subtle Respiratory Ciliary-Beating Defects.
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Loges, Niki T., Antony, Dinu, Maver, Ales, Deardorff, Matthew A., Güleç, Elif Yýlmaz, Gezdirici, Alper, Nöthe-Menchen, Tabea, Höben, Inga M., Jelten, Lena, Frank, Diana, Werner, Claudius, Tebbe, Johannes, Wu, Kaman, Goldmuntz, Elizabeth, Čuturilo, Goran, Krock, Bryan, Ritter, Alyssa, Hjeij, Rim, Bakey, Zeineb, and Pennekamp, Petra
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GENETIC mutation , *DYNEIN , *IMMUNOPRECIPITATION , *CHLAMYDOMONAS reinhardtii , *PHENOTYPES - Abstract
Dysfunction of motile monocilia, altering the leftward flow at the embryonic node essential for determination of left-right body asymmetry, is a major cause of laterality defects. Laterality defects are also often associated with reduced mucociliary clearance caused by defective multiple motile cilia of the airway and are responsible for destructive airway disease. Outer dynein arms (ODAs) are essential for ciliary beat generation, and human respiratory cilia contain different ODA heavy chains (HCs): the panaxonemally distributed γ-HC DNAH5, proximally located β-HC DNAH11 (defining ODA type 1), and the distally localized β-HC DNAH9 (defining ODA type 2). Here we report loss-of-function mutations in DNAH9 in five independent families causing situs abnormalities associated with subtle respiratory ciliary dysfunction. Consistent with the observed subtle respiratory phenotype, high-speed video microscopy demonstrates distally impaired ciliary bending in DNAH9 mutant respiratory cilia. DNAH9 -deficient cilia also lack other ODA components such as DNAH5, DNAI1, and DNAI2 from the distal axonemal compartment, demonstrating an essential role of DNAH9 for distal axonemal assembly of ODAs type 2. Yeast two-hybrid and co-immunoprecipitation analyses indicate interaction of DNAH9 with the ODA components DNAH5 and DNAI2 as well as the ODA-docking complex component CCDC114. We further show that during ciliogenesis of respiratory cilia, first proximally located DNAH11 and then distally located DNAH9 is assembled in the axoneme. We propose that the β-HC paralogs DNAH9 and DNAH11 achieved specific functional roles for the distinct axonemal compartments during evolution with human DNAH9 function matching that of ancient β-HCs such as that of the unicellular Chlamydomonas reinhardtii. [ABSTRACT FROM AUTHOR]
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- 2018
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20. TTC25 Deficiency Results in Defects of the Outer Dynein Arm Docking Machinery and Primary Ciliary Dyskinesia with Left-Right Body Asymmetry Randomization.
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Wallmeier, Julia, Shiratori, Hidetaka, Dougherty, Gerard W., Edelbusch, Christine, Hjeij, Rim, Loges, Niki T., Menchen, Tabea, Olbrich, Heike, Pennekamp, Petra, Raidt, Johanna, Werner, Claudius, Minegishi, Katsura, Shinohara, Kyosuke, Asai, Yasuko, Takaoka, Katsuyoshi, Lee, Chanjae, Griese, Matthias, Memari, Yasin, Durbin, Richard, and Kolb-Kokocinski, Anja
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CILIARY motility disorders , *DYNEIN , *MOLECULAR docking , *SYMMETRY (Biology) , *GENETIC mutation , *CRISPRS - Abstract
Multiprotein complexes referred to as outer dynein arms (ODAs) develop the main mechanical force to generate the ciliary and flagellar beat. ODA defects are the most common cause of primary ciliary dyskinesia (PCD), a congenital disorder of ciliary beating, characterized by recurrent infections of the upper and lower airways, as well as by progressive lung failure and randomization of left-right body asymmetry. Using a whole-exome sequencing approach, we identified recessive loss-of-function mutations within TTC25 in three individuals from two unrelated families affected by PCD. Mice generated by CRISPR/Cas9 technology and carrying a deletion of exons 2 and 3 in Ttc25 presented with laterality defects. Consistently, we observed immotile nodal cilia and missing leftward flow via particle image velocimetry. Furthermore, transmission electron microscopy (TEM) analysis in TTC25-deficient mice revealed an absence of ODAs. Consistent with our findings in mice, we were able to show loss of the ciliary ODAs in humans via TEM and immunofluorescence (IF) analyses. Additionally, IF analyses revealed an absence of the ODA docking complex (ODA-DC), along with its known components CCDC114, CCDC151, and ARMC4. Co-immunoprecipitation revealed interaction between the ODA-DC component CCDC114 and TTC25. Thus, here we report TTC25 as a new member of the ODA-DC machinery in humans and mice. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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21. ZMYND10 Is Mutated in Primary Ciliary Dyskinesia and Interacts with LRRC6.
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Zariwala, Maimoona?A., Gee, Heon?Yung, Kurkowiak, Małgorzata, Al-Mutairi, Dalal?A., Leigh, Margaret?W., Hurd, Toby?W., Hjeij, Rim, Dell, Sharon?D., Chaki, Moumita, Dougherty, Gerard?W., Adan, Mohamed, Spear, Philip?C., Esteve-Rudd, Julian, Loges, Niki?T., Rosenfeld, Margaret, Diaz, Katrina A., Olbrich, Heike, Wolf, Whitney?E., Sheridan, Eamonn, and Batten, Trevor?F.C.
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RESPIRATORY infections , *CILIARY motility disorders , *MALE infertility , *DISEASE relapse , *GENETIC mutation , *CENTRIOLES - Abstract
Defects of motile cilia cause primary ciliary dyskinesia (PCD), characterized by recurrent respiratory infections and male infertility. Using whole-exome resequencing and high-throughput mutation analysis, we identified recessive biallelic mutations in ZMYND10 in 14 families and mutations in the recently identified LRRC6 in 13 families. We show that ZMYND10 and LRRC6 interact and that certain ZMYND10 and LRRC6 mutations abrogate the interaction between the LRRC6 CS domain and the ZMYND10 C-terminal domain. Additionally, ZMYND10 and LRRC6 colocalize with the centriole markers SAS6 and PCM1. Mutations in ZMYND10 result in the absence of the axonemal protein components DNAH5 and DNALI1 from respiratory cilia. Animal models support the association between ZMYND10 and human PCD, given that zmynd10 knockdown in zebrafish caused ciliary paralysis leading to cystic kidneys and otolith defects and that knockdown in Xenopus interfered with ciliogenesis. Our findings suggest that a cytoplasmic protein complex containing ZMYND10 and LRRC6 is necessary for motile ciliary function. [ABSTRACT FROM AUTHOR]
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- 2013
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22. CiliaCarta: An integrated and validated compendium of ciliary genes
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Gerard W. Dougherty, Victor L. Jensen, Jan Frederik Scheel, Katarzyna Szymanska, Uwe Wolfrum, Radek Szklarczyk, Miriam Schmidts, Julie Kennedy, Erwin van Wijk, Brunella Franco, Toby J. Gibson, Machteld M. Oud, Chunmei Li, Nils J. Lambacher, Erik de Vrieze, Grischa Toedt, Teunis J. P. van Dam, Karsten Boldt, Heymut Omran, Yves Texier, Rachel H. Giles, Ronald Roepman, Kirsten A. Wunderlich, Sylvia E. C. van Beersum, Oliver E. Blacque, Thanh-Minh T. Nguyen, Konstantinos Koutroumpas, Hannie Kremer, Nicola Horn, Martijn A. Huynen, Michel R. Leroux, Gabrielle Wheway, Rim Hjeij, Philip L. Beales, Gisela G. Slaats, Robert B. Russell, Robin van der Lee, François Képès, Yasmin Wissinger, Barbara Knapp, Dorus A. Mans, Suzanne Rix, Marius Ueffing, Colin A. Johnson, Stef J.F. Letteboer, Victor Hernandez-Hernandez, Qianhao Lu, Jeroen van Reeuwijk, Sub Bioinformatics, Theoretical Biology and Bioinformatics, MUMC+: DA KG Lab Centraal Lab (9), Klinische Genetica, RS: GROW - R4 - Reproductive and Perinatal Medicine, van Dam, Teunis J P, Kennedy, Julie, van der Lee, Robin, de Vrieze, Erik, Wunderlich, Kirsten A, Rix, Suzanne, Dougherty, Gerard W, Lambacher, Nils J, Li, Chunmei, Jensen, Victor L, Leroux, Michel R, Hjeij, Rim, Horn, Nicola, Texier, Yve, Wissinger, Yasmin, van Reeuwijk, Jeroen, Wheway, Gabrielle, Knapp, Barbara, Scheel, Jan F, Franco, Brunella, Mans, Dorus A, van Wijk, Erwin, Képès, Françoi, Slaats, Gisela G, Toedt, Grischa, Kremer, Hannie, Omran, Heymut, Szymanska, Katarzyna, Koutroumpas, Konstantino, Ueffing, Mariu, Nguyen, Thanh-Minh T, Letteboer, Stef J F, Oud, Machteld M, van Beersum, Sylvia E C, Schmidts, Miriam, Beales, Philip L, Lu, Qianhao, Giles, Rachel H, Szklarczyk, Radek, Russell, Robert B, Gibson, Toby J, Johnson, Colin A, Blacque, Oliver E, Wolfrum, Uwe, Boldt, Karsten, Roepman, Ronald, Hernandez-Hernandez, Victor, and Huynen, Martijn A
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Proteomics ,Sensory Receptors ,Nematoda ,Social Sciences ,Ciliopathies ,Biochemistry ,Sensory disorders Donders Center for Medical Neuroscience [Radboudumc 12] ,Transcriptome ,0302 clinical medicine ,Animal Cells ,Psychology ,RETINAL PHOTORECEPTOR CELLS ,Exome ,Neurons ,0303 health sciences ,030302 biochemistry & molecular biology ,Eukaryota ,Genomics ,PRIMARY CILIUM ,thecilium ,3. Good health ,Nucleic acids ,Genetic interference ,Osteichthyes ,Medicine ,Epigenetics ,Cellular Structures and Organelles ,Cellular Types ,proteomic databases ,Sensory Receptor Cells ,Science ,education ,Ciliary genes ,LEBER CONGENITAL AMAUROSIS ,03 medical and health sciences ,Genetics ,Cilia ,Caenorhabditis elegans ,IDENTIFICATION ,MUTATIONS ,Embryos ,cilia ,Organisms ,Biology and Life Sciences ,Bayes Theorem ,Molecular Sequence Annotation ,medicine.disease ,Invertebrates ,Fish ,ciliary proteome ,Animal Studies ,Caenorhabditis ,Gene expression ,embryos ,030217 neurology & neurosurgery ,Developmental Biology ,Neuroscience ,Photoreceptors ,Candidate gene ,Embryology ,Oligonucleotides ,Morpholino ,Database and Informatics Methods ,RNA interference ,Bayesian classifier ,TRANSITION ZONE ,Zebrafish ,Antisense Oligonucleotides ,Multidisciplinary ,Spectrometric Identification of Proteins ,Proteomic Databases ,Nucleotides ,Cilium ,Stable Isotope Labeling by Amino Acids in Cell Culture ,photoreceptors ,Metabolic Disorders Radboud Institute for Molecular Life Sciences [Radboudumc 6] ,Animal Models ,Phenotype ,INTRAFLAGELLAR TRANSPORT ,DIFFERENTIATION ,Experimental Organism Systems ,Caenorhabditis Elegans ,Vertebrates ,Sensory Perception ,Research Article ,Signal Transduction ,EXPRESSION ,Stable isotope labeling by amino acids in cell culture ,Computational biology ,Biology ,Research and Analysis Methods ,SOLUTE-CARRIER-PROTEIN ,Model Organisms ,medicine ,Animals ,data integration ,030304 developmental biology ,Afferent Neurons ,Reproducibility of Results ,Cell Biology ,zebrafish ,biology.organism_classification ,Ciliopathy ,Renal disorders Radboud Institute for Molecular Life Sciences [Radboudumc 11] ,Biological Databases ,Cellular Neuroscience ,RNA ,OSCP1 ,CiliaCarta - Abstract
The cilium is an essential organelle at the surface of mammalian cells whose dysfunction causes a wide range of genetic diseases collectively called ciliopathies. The current rate at which new ciliopathy genes are identified suggests that many ciliary components remain undiscovered. We generated and rigorously analyzed genomic, proteomic, transcriptomic and evolutionary data and systematically integrated these using Bayesian statistics into a predictive score for ciliary function. This resulted in 285 candidate ciliary genes. We generated independent experimental evidence of ciliary associations for 24 out of 36 analyzed candidate proteins using multiple cell and animal model systems (mouse, zebrafish and nematode) and techniques. For example, we show that OSCP1, which has previously been implicated in two distinct non-ciliary processes, causes ciliogenic and ciliopathy-associated tissue phenotypes when depleted in zebrafish. The candidate list forms the basis of CiliaCarta, a comprehensive ciliary compendium covering 956 genes. The resource can be used to objectively prioritize candidate genes in whole exome or genome sequencing of ciliopathy patients and can be accessed at http://bioinformatics.bio.uu.nl/john/syscilia/ciliacarta/. This work was supported by the European Community’s Seventh Framework Programme [241955, 278568 to MU and KB, 602273 to RS]; the Virgo consortium, funded by the Dutch government [FES0908 to TvD, RvdL and MAH]; the Netherlands Genomics Initiative [050-060-452 to TvD, RvdL and MAH]; the Canadian Institutes of Health Research [MOP-142243, MOP-82870 and PJT-156042 to MRL]; Michael Smith Foundation for Health Research to MRL and VLJ; Kidney Research Scientist Core Education and National Training fellowship to VLJ; The Foundation Fighting Blindness [PPA-0717-0719-RAD to UW, RR, and MU]; the Dutch Kidney Foundation “KOUNCIL” consortium [CP11.18 to RHG, PLB and RR]; The Deutsche Forschungsgemeinschaft [Excellence grant CellNetworks to RBR and QL, CRC1140 “Kidney Disease – From Genes to Mechanisms” to MS, collaborative research center grant SFB-1411 KIDGEM to MS]; Metakids Foundation to RS; the National Institute for Health Research to PLB and VH-H. PLB is an NIHR Senior Investigator; Radboudumc Hypatia Tenure Track Fellowship, Radboud Universiteit excellence fellowship, ERC starting grant TREATCilia, grant agreement no. 716344 to MS; and the Netherlands Organization for Scientific Research [NWO Vici-865.12.005 to RR].
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- 2019
23. Biallelic DAW1 variants cause a motile ciliopathy characterized by laterality defects and subtle ciliary beating abnormalities.
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Leslie JS, Hjeij R, Vivante A, Bearce EA, Dyer L, Wang J, Rawlins L, Kennedy J, Ubeyratna N, Fasham J, Irons ZH, Craig SB, Koenig J, George S, Pode-Shakked B, Bolkier Y, Barel O, Mane S, Frederiksen KK, Wenger O, Scott E, Cross HE, Lorentzen E, Norris DP, Anikster Y, Omran H, Grimes DT, Crosby AH, and Baple EL
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- Animals, Humans, Mice, Axoneme genetics, Cilia metabolism, Mutation, Proteins genetics, Zebrafish genetics, Ciliary Motility Disorders genetics, Ciliary Motility Disorders metabolism, Ciliary Motility Disorders pathology, Ciliopathies genetics, Ciliopathies metabolism, Ciliopathies pathology, Cytoskeletal Proteins genetics
- Abstract
Purpose: The clinical spectrum of motile ciliopathies includes laterality defects, hydrocephalus, and infertility as well as primary ciliary dyskinesia when impaired mucociliary clearance results in otosinopulmonary disease. Importantly, approximately 30% of patients with primary ciliary dyskinesia lack a genetic diagnosis., Methods: Clinical, genomic, biochemical, and functional studies were performed alongside in vivo modeling of DAW1 variants., Results: In this study, we identified biallelic DAW1 variants associated with laterality defects and respiratory symptoms compatible with motile cilia dysfunction. In early mouse embryos, we showed that Daw1 expression is limited to distal, motile ciliated cells of the node, consistent with a role in left-right patterning. daw1 mutant zebrafish exhibited reduced cilia motility and left-right patterning defects, including cardiac looping abnormalities. Importantly, these defects were rescued by wild-type, but not mutant daw1, gene expression. In addition, pathogenic DAW1 missense variants displayed reduced protein stability, whereas DAW1 loss-of-function was associated with distal type 2 outer dynein arm assembly defects involving axonemal respiratory cilia proteins, explaining the reduced cilia-induced fluid flow in particle tracking velocimetry experiments., Conclusion: Our data define biallelic DAW1 variants as a cause of human motile ciliopathy and determine that the disease mechanism involves motile cilia dysfunction, explaining the ciliary beating defects observed in affected individuals., Competing Interests: Conflict of Interest The authors declare no conflicts of interest., (Copyright © 2022 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
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24. Randomization of Left-right Asymmetry and Congenital Heart Defects: The Role of DNAH5 in Humans and Mice.
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Nöthe-Menchen T, Wallmeier J, Pennekamp P, Höben IM, Olbrich H, Loges NT, Raidt J, Dougherty GW, Hjeij R, Dworniczak B, and Omran H
- Abstract
Background - Nearly one in 100 live births presents with congenital heart defects (CHD). CHD are frequently associated with laterality defects, such as situs inversus totalis (SIT), a mirrored positioning of internal organs. Body laterality is established by a complex process: monocilia at the embryonic left-right organizer (LRO) facilitate both the generation and sensing of a leftward fluid flow. This induces the conserved left-sided Nodal signaling cascade to initiate asymmetric organogenesis. Primary ciliary dyskinesia (PCD) originates from dysfunction of motile cilia, causing symptoms such as chronic sinusitis, bronchiectasis and frequently SIT. The most frequently mutated gene in PCD, DNAH5 is associated with randomization of body asymmetry resulting in SIT in half of the patients; however, its relation to CHD occurrence in humans has not been investigated in detail so far. Methods - We performed genotype / phenotype correlations in 132 PCD patients carrying disease-causing DNAH5 mutations, focusing on situs defects and CHD. Using high speed video microscopy-, immunofluorescence-, and in situ hybridization analyses, we investigated the initial steps of left-right axis establishment in embryos of a Dnah5 mutant mouse model. Results - 65.9% (87 / 132) of the PCD patients carrying disease-causing DNAH5 mutations had laterality defects: 88.5% (77 / 87) presented with SIT, 11.5% (10 / 87) presented with situs ambiguus ; and 6.1% (8 / 132) presented with CHD. In Dnah5
mut/mut mice, embryonic LRO monocilia lack outer dynein arms resulting in immotile cilia, impaired flow at the LRO, and randomization of Nodal signaling with normal, reversed or bilateral expression of key molecules. Conclusions - For the first time, we directly demonstrate the disease-mechanism of laterality defects linked to DNAH5 deficiency at the molecular level during embryogenesis. We highlight that mutations in DNAH5 are not only associated with classical randomization of left-right body asymmetry but also with severe laterality defects including CHD.- Published
- 2019
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25. Mutations in C11orf70 Cause Primary Ciliary Dyskinesia with Randomization of Left/Right Body Asymmetry Due to Defects of Outer and Inner Dynein Arms.
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Höben IM, Hjeij R, Olbrich H, Dougherty GW, Nöthe-Menchen T, Aprea I, Frank D, Pennekamp P, Dworniczak B, Wallmeier J, Raidt J, Nielsen KG, Philipsen MC, Santamaria F, Venditto L, Amirav I, Mussaffi H, Prenzel F, Wu K, Bakey Z, Schmidts M, Loges NT, and Omran H
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- Cilia metabolism, Cilia ultrastructure, Dyneins ultrastructure, Female, Genes, Recessive, Humans, Loss of Function Mutation genetics, Male, Sperm Tail metabolism, Body Patterning, Dyneins genetics, Kartagener Syndrome genetics, Mutation genetics, Nuclear Proteins genetics
- Abstract
Primary ciliary dyskinesia (PCD) is characterized by chronic airway disease, male infertility, and randomization of the left/right body axis as a result of defects of motile cilia and sperm flagella. We identified loss-of-function mutations in the open-reading frame C11orf70 in PCD individuals from five distinct families. Transmission electron microscopy analyses and high-resolution immunofluorescence microscopy demonstrate that loss-of-function mutations in C11orf70 cause immotility of respiratory cilia and sperm flagella, respectively, as a result of the loss of axonemal outer (ODAs) and inner dynein arms (IDAs), indicating that C11orf70 is involved in cytoplasmic assembly of dynein arms. Expression analyses of C11orf70 showed that C11orf70 is expressed in ciliated respiratory cells and that the expression of C11orf70 is upregulated during ciliogenesis, similar to other previously described cytoplasmic dynein-arm assembly factors. Furthermore, C11orf70 shows an interaction with cytoplasmic ODA/IDA assembly factor DNAAF2, supporting our hypothesis that C11orf70 is a preassembly factor involved in the pathogenesis of PCD. The identification of additional genetic defects that cause PCD and male infertility is of great importance for the clinic as well as for genetic counselling., (Copyright © 2018 American Society of Human Genetics. Published by Elsevier Inc. All rights reserved.)
- Published
- 2018
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26. Ciliary beat pattern and frequency in genetic variants of primary ciliary dyskinesia.
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Raidt J, Wallmeier J, Hjeij R, Onnebrink JG, Pennekamp P, Loges NT, Olbrich H, Häffner K, Dougherty GW, Omran H, and Werner C
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- Gene Frequency, Genetic Variation, Genotype, Heterozygote, Homozygote, Humans, Kartagener Syndrome genetics, Microscopy, Video, Mutation, Phenotype, Cilia physiology, Kartagener Syndrome physiopathology
- Abstract
Primary ciliary dyskinesia (PCD) is a rare genetic disorder leading to recurrent respiratory tract infections. High-speed video-microscopy analysis (HVMA) of ciliary beating, currently the first-line diagnostic tool for PCD in most centres, is challenging because recent studies have expanded the spectrum of HVMA findings in PCD from grossly abnormal to very subtle. The objective of this study was to describe the diversity of HVMA findings in genetically confirmed PCD individuals. HVMA was performed as part of the routine work-up of individuals with suspected PCD. Subsequent molecular analysis identified biallelic mutations in the PCD-related genes of 66 individuals. 1072 videos of these subjects were assessed for correlation with the genotype. Biallelic mutations (19 novel) were found in 17 genes: DNAI1, DNAI2, DNAH5, DNAH11, CCDC103, ARMC4, KTU/DNAAF2, LRRC50/DNAAF1, LRRC6, DYX1C1, ZMYND10, CCDC39, CCDC40, CCDC164, HYDIN, RSPH4A and RSPH1. Ciliary beat pattern variations correlated well with the genetic findings, allowing the classification of typical HVMA findings for different genetic groups. In contrast, analysis of ciliary beat frequency did not result in additional diagnostic impact. In conclusion, this study provides detailed knowledge about the diversity of HVMA findings in PCD and may therefore be seen as a guide to the improvement of PCD diagnostics., (©ERS 2014.)
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- 2014
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27. Mutations in SPAG1 cause primary ciliary dyskinesia associated with defective outer and inner dynein arms.
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Knowles MR, Ostrowski LE, Loges NT, Hurd T, Leigh MW, Huang L, Wolf WE, Carson JL, Hazucha MJ, Yin W, Davis SD, Dell SD, Ferkol TW, Sagel SD, Olivier KN, Jahnke C, Olbrich H, Werner C, Raidt J, Wallmeier J, Pennekamp P, Dougherty GW, Hjeij R, Gee HY, Otto EA, Halbritter J, Chaki M, Diaz KA, Braun DA, Porath JD, Schueler M, Baktai G, Griese M, Turner EH, Lewis AP, Bamshad MJ, Nickerson DA, Hildebrandt F, Shendure J, Omran H, and Zariwala MA
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- Adolescent, Adult, Animals, Axoneme genetics, Child, Child, Preschool, Cytoplasm genetics, Epithelial Cells metabolism, Exome, Female, Humans, Infant, Male, Pedigree, Phenotype, Young Adult, Zebrafish, Antigens, Surface genetics, Cilia genetics, Ciliary Motility Disorders genetics, Dyneins genetics, GTP-Binding Proteins genetics, Kartagener Syndrome genetics, Mutation genetics
- Abstract
Primary ciliary dyskinesia (PCD) is a genetically heterogeneous, autosomal-recessive disorder, characterized by oto-sino-pulmonary disease and situs abnormalities. PCD-causing mutations have been identified in 20 genes, but collectively they account for only ∼65% of all PCDs. To identify mutations in additional genes that cause PCD, we performed exome sequencing on three unrelated probands with ciliary outer and inner dynein arm (ODA+IDA) defects. Mutations in SPAG1 were identified in one family with three affected siblings. Further screening of SPAG1 in 98 unrelated affected individuals (62 with ODA+IDA defects, 35 with ODA defects, 1 without available ciliary ultrastructure) revealed biallelic loss-of-function mutations in 11 additional individuals (including one sib-pair). All 14 affected individuals with SPAG1 mutations had a characteristic PCD phenotype, including 8 with situs abnormalities. Additionally, all individuals with mutations who had defined ciliary ultrastructure had ODA+IDA defects. SPAG1 was present in human airway epithelial cell lysates but was not present in isolated axonemes, and immunofluorescence staining showed an absence of ODA and IDA proteins in cilia from an affected individual, thus indicating that SPAG1 probably plays a role in the cytoplasmic assembly and/or trafficking of the axonemal dynein arms. Zebrafish morpholino studies of spag1 produced cilia-related phenotypes previously reported for PCD-causing mutations in genes encoding cytoplasmic proteins. Together, these results demonstrate that mutations in SPAG1 cause PCD with ciliary ODA+IDA defects and that exome sequencing is useful to identify genetic causes of heterogeneous recessive disorders., (Copyright © 2013 The American Society of Human Genetics. Published by Elsevier Inc. All rights reserved.)
- Published
- 2013
- Full Text
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