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Altassan R, AlQudairy H, AlJebreen S, AlMuhaizea M, Al-Hindi H, Pena-Guerra KA, Ghebeh H, Almzroua A, Albakheet A, AlDosary M, Colak D, Arold ST, Kaya N. Expanding the phenotypic and genotypic spectrum of GGPS1 related congenital muscular dystrophy. Am J Med Genet A 2024; 194:e63498. [PMID: 38129970 DOI: 10.1002/ajmg.a.63498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/24/2023] [Accepted: 11/26/2023] [Indexed: 12/23/2023]
Abstract
Congenital muscular dystrophies are a group of progressive disorders with wide range of symptoms associated with diverse cellular mechanisms. Recently, biallelic variants in GGPS1 were linked to a distinct autosomal recessive form of muscular dystrophy associated with hearing loss and ovarian insufficiency. In this report, we present a case of a young patient with a homozygous variant in GGPS1. The patient presented with only proximal muscle weakness, and elevated liver transaminases with spared hearing function. The hepatic involvement in this patient caused by a novel deleterious variant in the gene extends the phenotypic and genotypic spectrum of GGPS1 related muscular dystrophy.
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Affiliation(s)
- Ruqaiah Altassan
- Department of Medical Genomics, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia
- College of Medicine, Alfaisal University, Riyadh, Kingdom of Saudi Arabia
| | - Hanan AlQudairy
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia
| | - Sarah AlJebreen
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia
| | - Mohammed AlMuhaizea
- College of Medicine, Alfaisal University, Riyadh, Kingdom of Saudi Arabia
- Center for Neurosciences, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia
| | - Hindi Al-Hindi
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia
| | - Karla A Pena-Guerra
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Thuwal, Kingdom of Saudi Arabia
| | - Hazem Ghebeh
- Stem Cell and Tissue Re-Engineering Program Department, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia
| | - Amer Almzroua
- Stem Cell and Tissue Re-Engineering Program Department, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia
| | - Albandary Albakheet
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia
| | - Mazhor AlDosary
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia
| | - Dilek Colak
- Department of Molecular Oncology, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia
| | - Stefan T Arold
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Thuwal, Kingdom of Saudi Arabia
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Namik Kaya
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia
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2
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Khan A, Al Shamsi B, Al Shehhi M, Kashgari AA, Al Balushi A, Al Dihan FA, Alghamdi MA, Manal A, González‐Álvarez AC, Arold ST, Eyaid W. Further delineation of Wiedemann-Rautenstrauch syndrome linked with POLR3A. Mol Genet Genomic Med 2024; 12:e2274. [PMID: 38348603 PMCID: PMC10958179 DOI: 10.1002/mgg3.2274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 08/03/2023] [Accepted: 08/08/2023] [Indexed: 03/23/2024] Open
Abstract
Wiedemann-Rautenstrauch Syndrome (WRS; MIM 264090) is an extremely rare and highly heterogeneous syndrome that is inherited in a recessive fashion. The patients have hallmark features such as prenatal and postnatal growth retardation, short stature, a progeroid appearance, hypotonia, facial dysmorphology, hypomyelination leukodystrophy, and mental impairment. Biallelic disease-causing variants in the RNA polymerase III subunit A (POLR3A) have been associated with WRS. Here, we report the first identified cases of WRS syndrome with novel phenotypes in three consanguineous families (two Omani and one Saudi) characterized by biallelic variants in POLR3A. Using whole-exome sequencing, we identified one novel homozygous missense variant (NM_007055: c.2456C>T; p. Pro819Leu) in two Omani families and one novel homozygous variant (c.1895G>T; p Cys632Phe) in Saudi family that segregates with the disease in the POLR3A gene. In silico homology modeling of wild-type and mutated proteins revealed a substantial change in the structure and stability of both proteins, demonstrating a possible effect on function. By identifying the homozygous variants in the exon 14 and 18 of the POLR3A gene, our findings will contribute to a better understanding of the phenotype-genotype relationship and molecular etiology of WRS syndrome.
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Affiliation(s)
- Amjad Khan
- Faculty of Science, Department of Biological Sciences (Zoology)University of Lakki MarwatLakki MarwatPakistan
- Institute for Medical Genetics and Applied GenomicsUniversity of TübingenTübingenGermany
- Alexander von Humboldt Fellowship FoundationBerlinGermany
| | - Bushra Al Shamsi
- National Genetics CenterThe Royal Hospital, Ministry of HealthMuscatSultanate of Oman
- Child Health DepartmentThe Royal Hospital, Ministry of HealthMuscatSultanate of Oman
| | - Maryam Al Shehhi
- National Genetics CenterThe Royal Hospital, Ministry of HealthMuscatSultanate of Oman
| | - Amna A. Kashgari
- Genetics Division, Department of Pediatrics, King Abdullah International Medical Research Centre (KAIMRC)King Saud bin Abdulaziz University for Health Science, King Abdulaziz Medical City, Ministry of National Guard‐Health Affairs (MNGHA)RiyadhSaudi Arabia
- King Abdullah Specialized Children's Hospital (KASCH)Ministry of National Guard Health AffairsRiyadhSaudi Arabia
| | - Aaisha Al Balushi
- National Genetics CenterThe Royal Hospital, Ministry of HealthMuscatSultanate of Oman
- Child Health DepartmentThe Royal Hospital, Ministry of HealthMuscatSultanate of Oman
| | - Fahad A. Al Dihan
- College of MedicineKing Saud Bin Abdulaziz University for Health SciencesRiyadhSaudi Arabia
| | - Mohannad A. Alghamdi
- College of MedicineKing Saud Bin Abdulaziz University for Health SciencesRiyadhSaudi Arabia
| | - Abothnain Manal
- Genetics Division, Department of Pediatrics, King Abdullah International Medical Research Centre (KAIMRC)King Saud bin Abdulaziz University for Health Science, King Abdulaziz Medical City, Ministry of National Guard‐Health Affairs (MNGHA)RiyadhSaudi Arabia
- King Abdullah Specialized Children's Hospital (KASCH)Ministry of National Guard Health AffairsRiyadhSaudi Arabia
| | - Ana C. González‐Álvarez
- Bioscience Program, Bioengineering Program, Biological and Environmental Science and Engineering DivisionKing Abdullah University of Science and Technology (KAUST)ThuwalKingdom of Saudi Arabia
- Computational Biology Research CenterKing Abdullah University of Science and TechnologyThuwalKingdom of Saudi Arabia
| | - Stefan T. Arold
- Bioscience Program, Bioengineering Program, Biological and Environmental Science and Engineering DivisionKing Abdullah University of Science and Technology (KAUST)ThuwalKingdom of Saudi Arabia
- Computational Biology Research CenterKing Abdullah University of Science and TechnologyThuwalKingdom of Saudi Arabia
- Centre de Biologie Structurale (CBS), INSERM, CNRSUniversité de MontpellierMontpellierFrance
| | - Wafaa Eyaid
- Genetics Division, Department of Pediatrics, King Abdullah International Medical Research Centre (KAIMRC)King Saud bin Abdulaziz University for Health Science, King Abdulaziz Medical City, Ministry of National Guard‐Health Affairs (MNGHA)RiyadhSaudi Arabia
- King Abdullah Specialized Children's Hospital (KASCH)Ministry of National Guard Health AffairsRiyadhSaudi Arabia
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3
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Alsemari A, Guzmán-Vega FJ, Meyer BF, Arold ST. Novel Homozygous Variants of SLC13A5 Expand the Functional Heterogeneity of a Homogeneous Syndrome of Early Infantile Epileptic Encephalopathy. Pediatr Neurol 2024; 151:68-72. [PMID: 38113697 DOI: 10.1016/j.pediatrneurol.2023.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/19/2023] [Accepted: 10/13/2023] [Indexed: 12/21/2023]
Abstract
BACKGROUND Early infantile epileptic encephalopathy 25 (EIEE25) is a distinct type of neonatal epileptic encephalopathy caused by autosomal recessive mutations in the SLC13A5 gene. SLC13A5 encodes a transmembrane sodium/citrate cotransporter required for regulating citrate entry into cells. METHODS Four families with recessively inherited epileptic encephalopathy were sequenced by clinically accredited laboratories using commercially available epilepsy gene panels. Patients were examined by a neurologist and were clinically diagnosed with infantile epileptic encephalopathy. RESULTS We present four families with global developmental delay, intellectual disability, and defective tooth development with four novel homozygous mutations in SLC13A5. The neurological examination showed spastic quadriplegia with increased deep tendon reflexes. Brain magnetic resonance imaging showed nonspecific signal abnormality of the bilateral hemispheric white matter. Despite similar clinical features, the conditions were based on different molecular mechanisms acting on SLC13A5 (abnormal splicing, large-scale deletions, and tandem-residue insertion). CONCLUSIONS Our results extend the landscape of autosomal recessive inherited homozygous mutations in SLC13A5 that cause a distinctive syndrome of severe neonatal epileptic encephalopathy. Our observations confirm the homogeneity of epileptic encephalopathy and dental abnormalities as a distinct clinical marker for EIEE25 despite the heterogeneous functional and mutational background.
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Affiliation(s)
- Abdulaziz Alsemari
- Department of Neurosciences, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia; Department of Genetics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.
| | - Francisco J Guzmán-Vega
- Saudi Human Genome Project, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Brian F Meyer
- Department of Genetics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia; Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Centre (CBRC), Thuwal, Saudi Arabia
| | - Stefan T Arold
- Saudi Human Genome Project, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
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4
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Guo K, Grünberg R, Ren Y, Chang T, Wustoni S, Strnad O, Koklu A, Díaz-Galicia E, Agudelo JP, Druet V, Castillo TCH, Moser M, Ohayon D, Hama A, Dada A, McCulloch I, Viola I, Arold ST, Inal S. SpyDirect: A Novel Biofunctionalization Method for High Stability and Longevity of Electronic Biosensors. Adv Sci (Weinh) 2023:e2306716. [PMID: 38161228 DOI: 10.1002/advs.202306716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/21/2023] [Indexed: 01/03/2024]
Abstract
Electronic immunosensors are indispensable tools for diagnostics, particularly in scenarios demanding immediate results. Conventionally, these sensors rely on the chemical immobilization of antibodies onto electrodes. However, globular proteins tend to adsorb and unfold on these surfaces. Therefore, self-assembled monolayers (SAMs) of thiolated alkyl molecules are commonly used for indirect gold-antibody coupling. Here, a limitation associated with SAMs is revealed, wherein they curtail the longevity of protein sensors, particularly when integrated into the state-of-the-art transducer of organic bioelectronics-the organic electrochemical transistor. The SpyDirect method is introduced, generating an ultrahigh-density array of oriented nanobody receptors stably linked to the gold electrode without any SAMs. It is accomplished by directly coupling cysteine-terminated and orientation-optimized spyTag peptides, onto which nanobody-spyCatcher fusion proteins are autocatalytically attached, yielding a dense and uniform biorecognition layer. The structure-guided design optimizes the conformation and packing of flexibly tethered nanobodies. This biolayer enhances shelf-life and reduces background noise in various complex media. SpyDirect functionalization is faster and easier than SAM-based methods and does not necessitate organic solvents, rendering the sensors eco-friendly, accessible, and amenable to scalability. SpyDirect represents a broadly applicable biofunctionalization method for enhancing the cost-effectiveness, sustainability, and longevity of electronic biosensors, all without compromising sensitivity.
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Affiliation(s)
- Keying Guo
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Raik Grünberg
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Yuxiang Ren
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Tianrui Chang
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Shofarul Wustoni
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Ondrej Strnad
- Computer, Electrical and Mathematical Science and Engineering, KAUST, Thuwal, 23955-6900, Saudi Arabia
| | - Anil Koklu
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Escarlet Díaz-Galicia
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Jessica Parrado Agudelo
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Victor Druet
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Tania Cecilia Hidalgo Castillo
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Maximilian Moser
- Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | - David Ohayon
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Adel Hama
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Ashraf Dada
- King Faisal Specialist Hospital & Research Centre (KFSH-RC), Jeddah, 21499, Saudi Arabia
| | - Iain McCulloch
- Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | - Ivan Viola
- Computer, Electrical and Mathematical Science and Engineering, KAUST, Thuwal, 23955-6900, Saudi Arabia
| | - Stefan T Arold
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Centre de Biologie Structurale (CBS), INSERM, CNRS, Université de Montpellier, Montpellier, F-34090, France
| | - Sahika Inal
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
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5
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Ramos-Mandujano G, Grünberg R, Zhang Y, Bi C, Guzmán-Vega FJ, Shuaib M, Gorchakov RV, Xu J, Tehseen M, Takahashi M, Takahashi E, Dada A, Ahmad AN, Hamdan SM, Pain A, Arold ST, Li M. An open-source, automated, and cost-effective platform for COVID-19 diagnosis and rapid portable genomic surveillance using nanopore sequencing. Sci Rep 2023; 13:20349. [PMID: 37990068 PMCID: PMC10663496 DOI: 10.1038/s41598-023-47190-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 11/10/2023] [Indexed: 11/23/2023] Open
Abstract
The COVID-19 pandemic, caused by SARS-CoV-2, has emphasized the necessity for scalable diagnostic workflows using locally produced reagents and basic laboratory equipment with minimal dependence on global supply chains. We introduce an open-source automated platform for high-throughput RNA extraction and pathogen diagnosis, which uses reagents almost entirely produced in-house. This platform integrates our methods for self-manufacturing magnetic nanoparticles and qRT-PCR reagents-both of which have received regulatory approval for clinical use-with an in-house, open-source robotic extraction protocol. It also incorporates our "Nanopore Sequencing of Isothermal Rapid Viral Amplification for Near Real-time Analysis" (NIRVANA) technology, designed for tracking SARS-CoV-2 mutations and variants. The platform exhibits high reproducibility and consistency without cross-contamination, and its limit of detection, sensitivity, and specificity are comparable to commercial assays. Automated NIRVANA effectively identifies circulating SARS-CoV-2 variants. Our in-house, cost-effective reagents, automated diagnostic workflows, and portable genomic surveillance strategies provide a scalable and rapid solution for COVID-19 diagnosis and variant tracking, essential for current and future pandemic responses.
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Affiliation(s)
- Gerardo Ramos-Mandujano
- Stem Cell and Regeneration Laboratory, Bioscience Program, Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia
| | - Raik Grünberg
- Structural Biology and Engineering, Computational Biology Research Center. Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia
| | - Yingzi Zhang
- Stem Cell and Regeneration Laboratory, Bioscience Program, Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia
| | - Chongwei Bi
- Stem Cell and Regeneration Laboratory, Bioscience Program, Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia
| | - Francisco J Guzmán-Vega
- Structural Biology and Engineering, Computational Biology Research Center. Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia
| | - Muhammad Shuaib
- Pathogen Genomics Laboratory, Bioscience Program, Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia
| | - Rodion V Gorchakov
- Health, Safety and Environment Department, King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia
| | - Jinna Xu
- Stem Cell and Regeneration Laboratory, Bioscience Program, Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia
| | - Muhammad Tehseen
- Laboratory of DNA Replication and Recombination, Bioscience Program, Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia
| | - Masateru Takahashi
- Laboratory of DNA Replication and Recombination, Bioscience Program, Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia
| | - Etsuko Takahashi
- Laboratory of DNA Replication and Recombination, Bioscience Program, Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia
| | - Ashraf Dada
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Center, Jeddah, Kingdom of Saudi Arabia
- College of Medicine, Al Faisal University, Riyadh, Kingdom of Saudi Arabia
| | - Adeel Nazir Ahmad
- KAUST Health, King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia
| | - Samir M Hamdan
- Laboratory of DNA Replication and Recombination, Bioscience Program, Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia
| | - Arnab Pain
- Pathogen Genomics Laboratory, Bioscience Program, Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia
| | - Stefan T Arold
- Structural Biology and Engineering, Computational Biology Research Center. Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia.
| | - Mo Li
- Stem Cell and Regeneration Laboratory, Bioscience Program, Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia.
- Bioengineering Program, Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900, Thuwal, Kingdom of Saudi Arabia.
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6
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Deng R, Medico-Salsench E, Nikoncuk A, Ramakrishnan R, Lanko K, Kühn NA, van der Linde HC, Lor-Zade S, Albuainain F, Shi Y, Yousefi S, Capo I, van den Herik EM, van Slegtenhorst M, van Minkelen R, Geeven G, Mulder MT, Ruijter GJG, Lütjohann D, Jacobs EH, Houlden H, Pagnamenta AT, Metcalfe K, Jackson A, Banka S, De Simone L, Schwaede A, Kuntz N, Palculict TB, Abbas S, Umair M, AlMuhaizea M, Colak D, AlQudairy H, Alsagob M, Pereira C, Trunzo R, Karageorgou V, Bertoli-Avella AM, Bauer P, Bouman A, Hoefsloot LH, van Ham TJ, Issa M, Zaki MS, Gleeson JG, Willemsen R, Kaya N, Arold ST, Maroofian R, Sanderson LE, Barakat TS. AMFR dysfunction causes autosomal recessive spastic paraplegia in human that is amenable to statin treatment in a preclinical model. Acta Neuropathol 2023; 146:353-368. [PMID: 37119330 PMCID: PMC10328903 DOI: 10.1007/s00401-023-02579-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 05/01/2023]
Abstract
Hereditary spastic paraplegias (HSP) are rare, inherited neurodegenerative or neurodevelopmental disorders that mainly present with lower limb spasticity and muscle weakness due to motor neuron dysfunction. Whole genome sequencing identified bi-allelic truncating variants in AMFR, encoding a RING-H2 finger E3 ubiquitin ligase anchored at the membrane of the endoplasmic reticulum (ER), in two previously genetically unexplained HSP-affected siblings. Subsequently, international collaboration recognized additional HSP-affected individuals with similar bi-allelic truncating AMFR variants, resulting in a cohort of 20 individuals from 8 unrelated, consanguineous families. Variants segregated with a phenotype of mainly pure but also complex HSP consisting of global developmental delay, mild intellectual disability, motor dysfunction, and progressive spasticity. Patient-derived fibroblasts, neural stem cells (NSCs), and in vivo zebrafish modeling were used to investigate pathomechanisms, including initial preclinical therapy assessment. The absence of AMFR disturbs lipid homeostasis, causing lipid droplet accumulation in NSCs and patient-derived fibroblasts which is rescued upon AMFR re-expression. Electron microscopy indicates ER morphology alterations in the absence of AMFR. Similar findings are seen in amfra-/- zebrafish larvae, in addition to altered touch-evoked escape response and defects in motor neuron branching, phenocopying the HSP observed in patients. Interestingly, administration of FDA-approved statins improves touch-evoked escape response and motor neuron branching defects in amfra-/- zebrafish larvae, suggesting potential therapeutic implications. Our genetic and functional studies identify bi-allelic truncating variants in AMFR as a cause of a novel autosomal recessive HSP by altering lipid metabolism, which may potentially be therapeutically modulated using precision medicine with statins.
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Affiliation(s)
- Ruizhi Deng
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Whole Genome Sequencing Implementation and Research Task Force, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Eva Medico-Salsench
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Anita Nikoncuk
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Reshmi Ramakrishnan
- Bioscience Program, Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900 Saudi Arabia
| | - Kristina Lanko
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Nikolas A. Kühn
- Department of Cell Biology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Herma C. van der Linde
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Sarah Lor-Zade
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Fatimah Albuainain
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Yuwei Shi
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Soheil Yousefi
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Whole Genome Sequencing Implementation and Research Task Force, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Ivan Capo
- Department for Histology and Embryology, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | | | - Marjon van Slegtenhorst
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Rick van Minkelen
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Geert Geeven
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Whole Genome Sequencing Implementation and Research Task Force, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Monique T. Mulder
- Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - George J. G. Ruijter
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Dieter Lütjohann
- Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany
| | - Edwin H. Jacobs
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Henry Houlden
- Department of Neuromuscular Disorders, UCL Queen Square Institute of Neurology, London, UK
| | - Alistair T. Pagnamenta
- NIHR Biomedical Research Centre, Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Kay Metcalfe
- Manchester Centre for Genomic Medicine, St Mary’s Hospital, Health Innovation Manchester, Manchester University Foundation NHS Trust, Manchester, UK
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, M13 9PL UK
| | - Adam Jackson
- Manchester Centre for Genomic Medicine, St Mary’s Hospital, Health Innovation Manchester, Manchester University Foundation NHS Trust, Manchester, UK
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, M13 9PL UK
| | - Siddharth Banka
- Manchester Centre for Genomic Medicine, St Mary’s Hospital, Health Innovation Manchester, Manchester University Foundation NHS Trust, Manchester, UK
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, M13 9PL UK
| | - Lenika De Simone
- Division of Neurology, Division of Genetics, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, USA
| | - Abigail Schwaede
- Division of Neurology, Division of Genetics, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, USA
| | - Nancy Kuntz
- Division of Neurology, Division of Genetics, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, USA
| | | | - Safdar Abbas
- Department of Biological Science, Dartmouth College, Hanover, NH USA
| | - Muhammad Umair
- Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
- Department of Life Sciences, School of Science, University of Management and Technology (UMT), Lahore, Pakistan
| | - Mohammed AlMuhaizea
- Neuroscience Centre, King Faisal Specialist Hospital and Research Centre (KFSHRC), MBC: 76, Riyadh, 11211 Saudi Arabia
| | - Dilek Colak
- Molecular Oncology Department, King Faisal Specialist Hospital and Research Centre (KFSHRC), MBC: 03, Riyadh, 11211 Saudi Arabia
| | - Hanan AlQudairy
- Translational Genomics Department, Center for Genomics Medicine, King Faisal Specialist Hospital and Research Centre, MBC: 26, PO Box: 3354, Riyadh, 11211 Saudi Arabia
| | - Maysoon Alsagob
- Translational Genomics Department, Center for Genomics Medicine, King Faisal Specialist Hospital and Research Centre, MBC: 26, PO Box: 3354, Riyadh, 11211 Saudi Arabia
- Applied Genomics Technologies Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh, Saudi Arabia
| | | | | | | | | | | | - Arjan Bouman
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Lies H. Hoefsloot
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Whole Genome Sequencing Implementation and Research Task Force, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Tjakko J. van Ham
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Whole Genome Sequencing Implementation and Research Task Force, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Mahmoud Issa
- Clinical Genetics Department, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - Maha S. Zaki
- Clinical Genetics Department, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - Joseph G. Gleeson
- Departments of Neurosciences and Pediatrics, Howard Hughes Medical Institute, University of California, Rady Children’s Institute for Genomic Medicine, San Diego, USA
| | - Rob Willemsen
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Namik Kaya
- Translational Genomics Department, Center for Genomics Medicine, King Faisal Specialist Hospital and Research Centre, MBC: 26, PO Box: 3354, Riyadh, 11211 Saudi Arabia
| | - Stefan T. Arold
- Bioscience Program, Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900 Saudi Arabia
- Centre de Biologie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
| | - Reza Maroofian
- Department of Neuromuscular Disorders, UCL Queen Square Institute of Neurology, London, UK
| | - Leslie E. Sanderson
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Tahsin Stefan Barakat
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Whole Genome Sequencing Implementation and Research Task Force, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- ENCORE Expertise Center for Neurodevelopmental Disorders, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Discovery Unit, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
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7
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Siodmak A, Shahul Hameed UF, Rayapuram N, Völz R, Boudsocq M, Alharbi S, Alhoraibi H, Lee YH, Blilou I, Arold ST, Hirt H. Essential role of the CD docking motif of MPK4 in plant immunity, growth, and development. New Phytol 2023; 239:1112-1126. [PMID: 37243525 DOI: 10.1111/nph.18989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 03/28/2023] [Indexed: 05/29/2023]
Abstract
MAPKs are universal eukaryotic signaling factors whose functioning is assumed to depend on the recognition of a common docking motif (CD) by its activators, substrates, and inactivators. We studied the role of the CD domain of Arabidopsis MPK4 by performing interaction studies and determining the ligand-bound MPK4 crystal structure. We revealed that the CD domain of MPK4 is essential for interaction and activation by its upstream MAPKKs MKK1, MKK2, and MKK6. Cys181 in the CD site of MPK4 was shown to become sulfenylated in response to reactive oxygen species in vitro. To test the function of C181 in vivo, we generated wild-type (WT) MPK4-C181, nonsulfenylatable MPK4-C181S, and potentially sulfenylation mimicking MPK4-C181D lines in the mpk4 knockout background. We analyzed the phenotypes in growth, development, and stress responses, revealing that MPK4-C181S has WT activity and complements the mpk4 phenotype. By contrast, MPK4-C181D cannot be activated by upstream MAPKK and cannot complement the phenotypes of mpk4. Our findings show that the CD motif is essential and is required for activation by upstream MAPKK for MPK4 function. Furthermore, growth, development, or immunity functions require upstream activation of the MPK4 protein kinase.
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Affiliation(s)
- Anna Siodmak
- Plant Science Program, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Umar F Shahul Hameed
- Bioscience Program, Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Naganand Rayapuram
- Plant Science Program, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Ronny Völz
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Korea
| | - Marie Boudsocq
- Université Paris Saclay, CNRS, INRAE, Univ Evry, Université Paris Cité, Institute of Plant Sciences Paris-Saclay IPS2, 91190, Gif sur-Yvette, France
| | - Siba Alharbi
- Bioscience Program, Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Hannah Alhoraibi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, 21551, Saudi Arabia
| | - Yong-Hwan Lee
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Korea
- Center for Fungal Genetic Resources, Seoul National University, Seoul, 08826, Korea
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Korea
- Plant Immunity Research Center, Seoul National University, Seoul, 08826, Korea
| | - Ikram Blilou
- Plant Science Program, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Stefan T Arold
- Bioscience Program, Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Centre de Biologie Structurale (CBS), INSERM, CNRS, Université de Montpellier, F-34090, Montpellier, France
| | - Heribert Hirt
- Plant Science Program, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
- Max Perutz Laboratories, University of Vienna, Dr. Bohrgasse 9, 1030, Vienna, Austria
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8
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Guzmán-Vega FJ, González-Álvarez AC, Peña-Guerra KA, Cardona-Londoño KJ, Arold ST. Leveraging AI Advances and Online Tools for Structure-Based Variant Analysis. Curr Protoc 2023; 3:e857. [PMID: 37540795 DOI: 10.1002/cpz1.857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/06/2023]
Abstract
Understanding how a gene variant affects protein function is important in life science, as it helps explain traits or dysfunctions in organisms. In a clinical setting, this understanding makes it possible to improve and personalize patient care. Bioinformatic tools often only assign a pathogenicity score, rather than providing information about the molecular basis for phenotypes. Experimental testing can furnish this information, but this is slow and costly and requires expertise and equipment not available in a clinical setting. Conversely, mapping a gene variant onto the three-dimensional (3D) protein structure provides a fast molecular assessment free of charge. Before 2021, this type of analysis was severely limited by the availability of experimentally determined 3D protein structures. Advances in artificial intelligence algorithms now allow confident prediction of protein structural features from sequence alone. The aim of the protocols presented here is to enable non-experts to use databases and online tools to investigate the molecular effect of a genetic variant. The Basic Protocol relies only on the online resources AlphaFold, Protein Structure Database, and UniProt. Alternate Protocols document the usage of the Protein Data Bank, SWISS-MODEL, ColabFold, and PyMOL for structure-based variant analysis. © 2023 The Authors. Current Protocols published by Wiley Periodicals LLC. Basic Protocol: 3D Mapping based on UniProt and AlphaFold Alternate Protocol 1: Using experimental models from the PDB Alternate Protocol 2: Using information from homology modeling with SWISS-MODEL Alternate Protocol 3: Predicting 3D structures with ColabFold Alternate Protocol 4: Structure visualization and analysis with PyMOL.
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Affiliation(s)
- Francisco J Guzmán-Vega
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia
- Computational Bioscience Research Center, KAUST, Thuwal, Saudi Arabia
| | - Ana C González-Álvarez
- Bioengineering Program, Biological and Environmental Science and Engineering Division, KAUST, Thuwal, Saudi Arabia
- Computational Bioscience Research Center, KAUST, Thuwal, Saudi Arabia
| | - Karla A Peña-Guerra
- Bioengineering Program, Biological and Environmental Science and Engineering Division, KAUST, Thuwal, Saudi Arabia
- Computational Bioscience Research Center, KAUST, Thuwal, Saudi Arabia
| | - Kelly J Cardona-Londoño
- Bioengineering Program, Biological and Environmental Science and Engineering Division, KAUST, Thuwal, Saudi Arabia
- Computational Bioscience Research Center, KAUST, Thuwal, Saudi Arabia
| | - Stefan T Arold
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia
- Bioengineering Program, Biological and Environmental Science and Engineering Division, KAUST, Thuwal, Saudi Arabia
- Computational Bioscience Research Center, KAUST, Thuwal, Saudi Arabia
- Centre de Biologie Structurale (CBS), INSERM, CNRS, Université de Montpellier, Montpellier, France
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9
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Lin CC, Wieteska L, Poncet-Montange G, Suen KM, Arold ST, Ahmed Z, Ladbury JE. The combined action of the intracellular regions regulates FGFR2 kinase activity. Commun Biol 2023; 6:728. [PMID: 37452126 PMCID: PMC10349056 DOI: 10.1038/s42003-023-05112-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 07/07/2023] [Indexed: 07/18/2023] Open
Abstract
Receptor tyrosine kinases (RTKs) are typically activated through a precise sequence of intracellular phosphorylation events starting with a tyrosine residue on the activation loop (A-loop) of the kinase domain (KD). From this point the mono-phosphorylated enzyme is active, but subject to stringent regulatory mechanisms which can vary dramatically across the different RTKs. In the absence of extracellular stimulation, fibroblast growth factor receptor 2 (FGFR2) exists in the mono-phosphorylated state in which catalytic activity is regulated to allow rapid response upon ligand binding, whilst restricting ligand-independent activation. Failure of this regulation is responsible for pathologic outcomes including cancer. Here we reveal the molecular mechanistic detail of KD control based on combinatorial interactions of the juxtamembrane (JM) and the C-terminal tail (CT) regions of the receptor. JM stabilizes the asymmetric dimeric KD required for substrate phosphorylation, whilst CT binding opposes dimerization, and down-regulates activity. Direct binding between JM and CT delays the recruitment of downstream effector proteins adding a further control step as the receptor proceeds to full activation. Our findings underscore the diversity in mechanisms of RTK oligomerisation and activation.
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Affiliation(s)
- Chi-Chuan Lin
- School of Molecular and Cellular Biology, and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Lukasz Wieteska
- School of Molecular and Cellular Biology, and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Guillaume Poncet-Montange
- Center for the Development of Therapeutics, Broad Institute of MIT & Harvard, Cambridge, MA, 02142, USA
| | - Kin Man Suen
- School of Molecular and Cellular Biology, and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Stefan T Arold
- King Abdullah University of Science and Technology, Computational Bioscience Research Center, Division of Biological and Environmental Sciences and Engineering, Thuwal, 23955-6900, Saudi Arabia
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090, Montpellier, France
| | - Zamal Ahmed
- Department of Molecular and Cellular Oncology, University of Texas, MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - John E Ladbury
- School of Molecular and Cellular Biology, and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK.
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Bohlega S, Abusrair AH, Al-Qahtani Z, Guzmán-Vega FJ, Ramakrishnan R, Aldosari H, Aldakheel A, Al-Qahtani S, Monies D, Arold ST. Expanding the genotype-phenotype landscape of PDE10A-associated movement disorders. Parkinsonism Relat Disord 2023; 108:105323. [PMID: 36805523 DOI: 10.1016/j.parkreldis.2023.105323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 02/15/2023]
Abstract
BACKGROUND Phosphodiesterase 10A (PDE10A) controls body movements by regulating cyclic adenosine monophosphate signaling in the basal ganglia. Two classes of PDE10A variants are reported with distinctive genotype-phenotype correlation. The autosomal recessive mutations in the GAF-A and catalytic domains are associated with compromised membrane localization, and manifest with infantile onset chorea, developmental, and cognition delay with normal brain MRI. Conversely, autosomal dominant mutations in the GAF-B domain cause protein aggregates which results in childhood onset chorea in the context of normal cognition and development, with striatal lesions. METHODS Phenotypic characteristics of affected individuals with PDE10A mutations belonging to a single family were recorded. In addition, Sanger sequencing and in silico analysis were used to identify the mutations. Homozygosity mapping was applied together with whole exome sequencing. RESULTS Four individuals from a consanguineous family affected with PDE10A mutations were observed for up to 40 years. Although these individuals displayed a clinical phenotype attributed to the recessive GAF-A mutations, they revealed a bi-allelic GAF-B mutation (c.883G > A:p. D295 N; p.Asp295Asn) that was segregated with all affected individuals. In addition to chorea, we observed peculiar foot deformities and pronounced social phobia, with normal brain MRI. In silico structural analysis suggested that the GAF-B mutation blocked allosteric PDE10A activation. The resulting lack of PDE10A activity likely phenocopies GAF-A mutations, and this is achieved through a distinct mechanism. CONCLUSIONS Collectively, our findings demonstrate the association of recessive and dominant phenotypes of known variants, and further expands the genotype-phenotype landscape of PDE10A-associated movement disorders.
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Affiliation(s)
- Saeed Bohlega
- Movement Disorders Program, Neuroscience Centre, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Kingdom of Saudi Arabia.
| | - Ali H Abusrair
- Movement Disorders Program, Neuroscience Centre, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Kingdom of Saudi Arabia
| | - Zainah Al-Qahtani
- Movement Disorders Program, Neuroscience Centre, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Kingdom of Saudi Arabia
| | - Francisco J Guzmán-Vega
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia; Computational Biology Research Center, King Abdullah University of Science and Technology, (KAUST), Thuwal, Kingdom of Saudi Arabia
| | - Reshmi Ramakrishnan
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia; Computational Biology Research Center, King Abdullah University of Science and Technology, (KAUST), Thuwal, Kingdom of Saudi Arabia
| | - Haya Aldosari
- Department of Genetics, Research Centre, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Kingdom of Saudi Arabia
| | - Amaal Aldakheel
- Movement Disorders Program, Neuroscience Centre, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Kingdom of Saudi Arabia
| | - Salma Al-Qahtani
- Movement Disorders Program, Neuroscience Centre, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Kingdom of Saudi Arabia
| | - Dorota Monies
- Department of Genetics, Research Centre, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Kingdom of Saudi Arabia
| | - Stefan T Arold
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia; Computational Biology Research Center, King Abdullah University of Science and Technology, (KAUST), Thuwal, Kingdom of Saudi Arabia; Centre de Biologie Structurale (CBS), INSERM, CNRS, Université de Montpellier, F-34090, Montpellier, France
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11
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Adisornkanj P, Chanprasit R, Eliason S, Fons JM, Intachai W, Tongsima S, Olsen B, Arold ST, Ngamphiw C, Amendt BA, Tucker AS, Kantaputra P. Genetic Variants in Protein Tyrosine Phosphatase Non-Receptor Type 23 Are Responsible for Mesiodens Formation. Biology 2023; 12:biology12030393. [PMID: 36979085 PMCID: PMC10045488 DOI: 10.3390/biology12030393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/24/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023]
Abstract
A mesiodens is a supernumerary tooth located in the midline of the premaxilla. In order to investigate the genetic etiology of mesiodens, clinical and radiographic examination and whole exome sequencing (WES) were performed in 24 family members of a two-generation Hmong family and additionally in two unrelated Thai patients with mesiodens. WES in the Hmong family revealed a missense mutation (c.1807G>A;p.Glu603Lys) in PTPN23 in seven affected members and six unaffected members. The mode of inheritance was autosomal dominance with incomplete penetrance (53.84%). Two additional mutations in PTPN23, c.2248C>G;p.Pro750Ala and c.3298C>T;p.Arg1100Cys were identified in two unrelated patients with mesiodens. PTPN23 is a regulator of endosomal trafficking functioning to move activated membrane receptors, such as EGFR, from the endosomal sorting complex towards the ESCRT-III complex for multivesicular body biogenesis, lysosomal degradation, and subsequent downregulation of receptor signaling. Immunohistochemical study and RNAscope on developing mouse embryos showed broad expression of PTPN23 in oral tissues, while immunofluorescence showed that EGFR was specifically concentrated in the midline epithelium. Importantly, PTPN23 mutant protein was shown to have reduced phosphatase activity. In conclusion, mesiodens were associated with genetic variants in PTPN23, suggesting that mesiodens may form due to defects in endosomal trafficking, leading to disrupted midline signaling.
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Affiliation(s)
- Ploy Adisornkanj
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Rajit Chanprasit
- Dental Department, Wiang Kaen Hospital, Wiang Kaen, Chiang Rai 57310, Thailand
| | - Steven Eliason
- Department of Anatomy and Cell Biology and the Craniofacial Anomalies Research Center, The University of Iowa, Iowa City, IA 52242, USA
| | - Juan M. Fons
- Centre for Craniofacial and Regenerative Biology, King’s College London, Floor 27 Guy’ Hospital, London Bridge, London SE1 9RT, UK
| | - Worrachet Intachai
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani 12120, Thailand
| | - Bjorn Olsen
- Department of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, MA 02115, USA
| | - Stefan T. Arold
- Computational Bioscience Research Center, Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
- Center for Structural Biology, National Institute of Health and Medical Research, National Centre for Scientific Research, University of Montpellier, 34090 Montpellier, France
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani 12120, Thailand
| | - Brad A. Amendt
- Department of Anatomy and Cell Biology and the Craniofacial Anomalies Research Center, The University of Iowa, Iowa City, IA 52242, USA
- Iowa Institute of Oral Health Research, University of Iowa, Iowa City, IA 52242, USA
| | - Abigail S. Tucker
- Centre for Craniofacial and Regenerative Biology, King’s College London, Floor 27 Guy’ Hospital, London Bridge, London SE1 9RT, UK
| | - Piranit Kantaputra
- Center of Excellence in Medical Genetics Research, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
- Correspondence:
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12
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AlHargan A, AlMuhaizea MA, Almass R, Alwadei AH, Daghestani M, Arold ST, Kaya N. SHQ1-associated neurodevelopmental disorder: Report of the first homozygous variant in unrelated patients and review of the literature. Hum Genome Var 2023; 10:7. [PMID: 36810590 PMCID: PMC9944922 DOI: 10.1038/s41439-023-00234-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/21/2022] [Accepted: 12/13/2022] [Indexed: 02/24/2023] Open
Abstract
Compound heterozygous mutations in SHQ1 have been associated with a rare and severe neurological disorder characterized by global developmental delay (GDD), cerebellar degeneration coupled with seizures, and early-onset dystonia. Currently, only five affected individuals have been documented in the literature. Here, we report three children from two unrelated families harboring a homozygous variant in the gene but with a milder phenotype than previously described. The patients had GDD and seizures. Magnetic resonance imaging analyses revealed diffuse white matter hypomyelination. Sanger sequencing confirmed the whole-exome sequencing results and revealed full segregation of the missense variant (SHQ1:c.833 T > C; p.I278T) in both families. We performed a comprehensive in silico analysis using different prediction classifiers and structural modeling of the variant. Our findings demonstrate that this novel homozygous variant in SHQ1 is likely to be pathogenic and leads to the clinical features observed in our patients.
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Affiliation(s)
- Aljouhra AlHargan
- Translational Genomics Department, MBC: 26, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Saudi Arabia
- Department of Zoology, P.O. Box. 145111, College of Sciences, King Saud University, Riyadh, 11362, Saudi Arabia
| | - Mohammed A AlMuhaizea
- Neuroscience Centre, MBC: 76, King Faisal Specialist Hospital and Research Centre, Riyadh, 11211, Saudi Arabia
- College of Medicine, AlFaisal University, Riyadh, Saudi Arabia
| | - Rawan Almass
- Department of Medical Genomics, MBC: 75, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, 11211, Saudi Arabia
| | - Ali H Alwadei
- Pediatric Neurology Department, National Neuroscience Institute, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Maha Daghestani
- Department of Zoology, P.O. Box. 145111, College of Sciences, King Saud University, Riyadh, 11362, Saudi Arabia
| | - Stefan T Arold
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
- Computational Biology Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Centre de Biologie Structurale (CBS), INSERM, CNRS, Université de Montpellier, F-34090, Montpellier, France
| | - Namik Kaya
- Translational Genomics Department, MBC: 26, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Saudi Arabia.
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13
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AlTassan R, AlQudairy H, Alromayan R, Alfalah A, AlHarbi OA, González-Álvarez AC, Arold ST, Kaya N. Clinical, Radiological, and Genetic Characterization of a Patient with a Novel Homoallelic Loss-of-Function Variant in DNM1. Genes (Basel) 2022; 13:genes13122252. [PMID: 36553519 PMCID: PMC9777962 DOI: 10.3390/genes13122252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 12/02/2022] Open
Abstract
Heterozygous pathogenic variants in DNM1 are linked to an autosomal dominant form of epileptic encephalopathy. Recently, homozygous loss-of-function variants in DNM1 were reported to cause an autosomal recessive form of developmental and epileptic encephalopathy in unrelated patients. Here, we investigated a singleton from a first-degree cousin marriage who presented with facial dysmorphism, global developmental delay, seizure disorder, and nystagmus. To identify the involvement of any likely genetic cause, diagnostic clinical exome sequencing was performed. Comprehensive filtering revealed a single plausible candidate variant in DNM1. Sanger sequencing of the trio, the patient, and her parents, confirmed the full segregation of the variant. The variant is a deletion leading to a premature stop codon and is predicted to cause a protein truncation. Structural modeling implicated a complete loss of function of the Dynamin 1 (DNM1). Such mutation is predicted to impair the nucleotide binding, dimer formation, and GTPase activity of DNM1. Our study expands the phenotypic spectrum of pathogenic homozygous loss-of-function variants in DNM1.
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Affiliation(s)
- Ruqaiah AlTassan
- Department of Medical Genomics, Centre for Genomic Medicine, MBC: 75, P.O. Box 3354, King Faisal Specialist Hospital, and Research Centre, Riyadh 11211, Saudi Arabia
- College of Medicine, P.O. Box 50927, AlFaisal University, Riyadh 11533, Saudi Arabia
| | - Hanan AlQudairy
- Translational Genomic Department, Centre for Genomic Medicine, MBC: 03, P.O. Box 3354, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia
| | - Rakan Alromayan
- Translational Genomic Department, Centre for Genomic Medicine, MBC: 03, P.O. Box 3354, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia
- College of Medicine, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abdullah Alfalah
- Department of Medical Genomics, Centre for Genomic Medicine, MBC: 75, P.O. Box 3354, King Faisal Specialist Hospital, and Research Centre, Riyadh 11211, Saudi Arabia
| | - Omar A. AlHarbi
- Department of Radiology, MBC: 28, P.O. Box 3354, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia
| | - Ana C. González-Álvarez
- Bioengineering Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Stefan T. Arold
- Bioengineering Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
- Computational Biology Research Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
- Centre de Biologie Structurale (CBS), INSERM, CNRS, Université de Montpellier, F-34090 Montpellier, France
| | - Namik Kaya
- Translational Genomic Department, Centre for Genomic Medicine, MBC: 03, P.O. Box 3354, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia
- Correspondence: ; Tel.: +966-112162919 (ext. 39612)
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14
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Zhang J, Vancea AI, Arold ST. Targeting plant UBX proteins: AI-enhanced lessons from distant cousins. Trends Plant Sci 2022; 27:1099-1108. [PMID: 35718708 DOI: 10.1016/j.tplants.2022.05.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 05/21/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
Across all eukaryotic kingdoms, ubiquitin regulatory X (UBX) domain-containing adaptor proteins control the segregase cell division control protein 48 (CDC48), and thereby also control cellular proteostasis and adaptation. The structures and biological roles of UBX proteins in animals and fungi have garnered considerable attention. However, their counterparts in plants remain markedly understudied. Since 2021, the artificial intelligence (AI)-based algorithm AlphaFold has provided predictions of protein structural features that can be highly accurate. Predictions of the proteomes of all major model organisms are now freely accessible to the entire research community through user-friendly web interfaces. We propose that the combination of cross-kingdom comparison with AF analysis produces a wealth of testable hypotheses to inspire and guide experimental research on plant UBX domain-containing (PUX) proteins.
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Affiliation(s)
- Junrui Zhang
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Alexandra I Vancea
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Stefan T Arold
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia; Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France.
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15
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Aldosary M, Alsagob M, AlQudairy H, González-Álvarez AC, Arold ST, Dababo MA, Alharbi OA, Almass R, AlBakheet A, AlSarar D, Qari A, Al-Ansari MM, Oláhová M, Al-Shahrani SA, AlSayed M, Colak D, Taylor RW, AlOwain M, Kaya N. A Novel Homozygous Founder Variant of RTN4IP1 in Two Consanguineous Saudi Families. Cells 2022; 11:3154. [PMID: 36231115 PMCID: PMC9563936 DOI: 10.3390/cells11193154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/26/2022] [Accepted: 10/01/2022] [Indexed: 11/25/2022] Open
Abstract
The genetic architecture of mitochondrial disease continues to expand and currently exceeds more than 350 disease-causing genes. Bi-allelic variants in RTN4IP1, also known as Optic Atrophy-10 (OPA10), lead to early-onset recessive optic neuropathy, atrophy, and encephalopathy in the afflicted patients. The gene is known to encode a mitochondrial ubiquinol oxidoreductase that interacts with reticulon 4 and is thought to be a mitochondrial antioxidant NADPH oxidoreductase. Here, we describe two unrelated consanguineous families from the northern region of Saudi Arabia harboring a missense variant (RTN4IP1:NM_032730.5; c.475G
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Affiliation(s)
- Mazhor Aldosary
- Translational Genomics Department, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
| | - Maysoon Alsagob
- Translational Genomics Department, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
- Center of Excellence for Biomedicine, Joint Centers for Excellence Program, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
| | - Hanan AlQudairy
- Translational Genomics Department, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
| | - Ana C. González-Álvarez
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
- Computational Biology Research Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Stefan T. Arold
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
- Computational Biology Research Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
- Centre de Biologie Structurale (CBS), INSERM, CNRS, Université de Montpellier, F-34090 Montpellier, France
| | - Mohammad Anas Dababo
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
| | - Omar A. Alharbi
- Radiology Department, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
| | - Rawan Almass
- Department of Medical Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
| | - AlBandary AlBakheet
- Translational Genomics Department, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
| | - Dalia AlSarar
- Translational Genomics Department, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Alya Qari
- Department of Medical Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
| | - Mysoon M. Al-Ansari
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
- Department of Molecular Oncology, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
| | - Monika Oláhová
- Welcome Centre for Mitochondrial Research, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Saif A. Al-Shahrani
- Department of Medical Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
| | - Moeenaldeen AlSayed
- Department of Medical Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
- College of Medicine, Alfaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia
| | - Dilek Colak
- Department of Molecular Oncology, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
| | - Robert W. Taylor
- Welcome Centre for Mitochondrial Research, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
- NHS Highly Specialized Service for Rare Mitochondrial Disorders, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne NE1 4LP, UK
| | - Mohammed AlOwain
- Department of Medical Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
| | - Namik Kaya
- Translational Genomics Department, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre (KFSHRC), P.O. Box 3354, Riyadh 11211, Saudi Arabia
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16
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Koklu A, Wustoni S, Guo K, Silva R, Salvigni L, Hama A, Diaz-Galicia E, Moser M, Marks A, McCulloch I, Grünberg R, Arold ST, Inal S. Convection Driven Ultrarapid Protein Detection via Nanobody-Functionalized Organic Electrochemical Transistors. Adv Mater 2022; 34:e2202972. [PMID: 35772173 DOI: 10.1002/adma.202202972] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Conventional biosensors rely on the diffusion-dominated transport of the target analyte to the sensor surface. Consequently, they require an incubation step that may take several hours to allow for the capture of analyte molecules by sensor biorecognition sites. This incubation step is a primary cause of long sample-to-result times. Here, alternating current electrothermal flow (ACET) is integrated in an organic electrochemical transistor (OECT)-based sensor to accelerate the device operation. ACET is applied to the gate electrode functionalized with nanobody-SpyCatcher fusion proteins. Using the SARS-CoV-2 spike protein in human saliva as an example target, it is shown that ACET enables protein recognition within only 2 min of sample exposure, supporting its use in clinical practice. The ACET integrated sensor exhibits better selectivity, higher sensitivity, and lower limit of detection than the equivalent sensor with diffusion-dominated operation. The performance of ACET integrated sensors is compared with two types of organic semiconductors in the channel and grounds for device-to-device variations are investigated. The results provide guidelines for the channel material choice in OECT-based biochemical sensors, and demonstrate that ACET integration substantially decreases the detection speed while increasing the sensitivity and selectivity of transistor-based sensors.
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Affiliation(s)
- Anil Koklu
- Organic Bioelectronics Laboratory, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center (CBRC), KAUST, Thuwal, Saudi Arabia
| | - Shofarul Wustoni
- Organic Bioelectronics Laboratory, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center (CBRC), KAUST, Thuwal, Saudi Arabia
| | - Keying Guo
- Organic Bioelectronics Laboratory, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center (CBRC), KAUST, Thuwal, Saudi Arabia
| | - Raphaela Silva
- Organic Bioelectronics Laboratory, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center (CBRC), KAUST, Thuwal, Saudi Arabia
| | - Luca Salvigni
- Organic Bioelectronics Laboratory, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center (CBRC), KAUST, Thuwal, Saudi Arabia
| | - Adel Hama
- Organic Bioelectronics Laboratory, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center (CBRC), KAUST, Thuwal, Saudi Arabia
| | - Escarlet Diaz-Galicia
- Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center (CBRC), KAUST, Thuwal, Saudi Arabia
| | - Maximilian Moser
- Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | - Adam Marks
- Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | - Iain McCulloch
- Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | - Raik Grünberg
- Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center (CBRC), KAUST, Thuwal, Saudi Arabia
| | - Stefan T Arold
- Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center (CBRC), KAUST, Thuwal, Saudi Arabia
- Centre de Biologie Structurale (CBS), INSERM, CNRS, Université de Montpellier, Montpellier, F-34090, France
| | - Sahika Inal
- Organic Bioelectronics Laboratory, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center (CBRC), KAUST, Thuwal, Saudi Arabia
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17
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Rehman ZU, Momin AA, Aldehaiman A, Irum T, Grünberg R, Arold ST. The exceptionally efficient quorum quenching enzyme LrsL suppresses Pseudomonas aeruginosa biofilm production. Front Microbiol 2022; 13:977673. [PMID: 36071959 PMCID: PMC9441902 DOI: 10.3389/fmicb.2022.977673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 07/27/2022] [Indexed: 11/13/2022] Open
Abstract
Quorum quenching (QQ) is the enzymatic degradation of molecules used by bacteria for synchronizing their behavior within communities. QQ has attracted wide attention due to its potential to inhibit biofilm formation and suppress the production of virulence factors. Through its capacity to limit biofouling and infections, QQ has applications in water treatment, aquaculture, and healthcare. Several different QQ enzymes have been described; however, they often lack the high stability and catalytic efficiency required for industrial applications. Previously, we identified genes from genome sequences of Red Sea sediment bacteria encoding potential QQ enzymes. In this study, we report that one of them, named LrsL, is a metallo-β-lactamase superfamily QQ enzyme with outstanding catalytic features. X-ray crystallography shows that LrsL is a zinc-binding dimer. LrsL has an unusually hydrophobic substrate binding pocket that can accommodate a broad range of acyl-homoserine lactones (AHLs) with exceptionally high affinity. In vitro, LrsL achieves the highest catalytic efficiency reported thus far for any QQ enzyme with a Kcat/KM of 3 × 107. LrsL effectively inhibited Pseudomonas aeruginosa biofilm formation without affecting bacterial growth. Furthermore, LrsL suppressed the production of exopolysaccharides required for biofilm production. These features, and its capacity to regain its function after prolonged heat denaturation, identify LrsL as a robust and unusually efficient QQ enzyme for clinical and industrial applications.
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Affiliation(s)
- Zahid Ur Rehman
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Environmental Science Program, Water Desalination and Reuse Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- *Correspondence: Zahid Ur Rehman, ; Stefan T. Arold,
| | - Afaque A. Momin
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Computational Biology Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Abdullah Aldehaiman
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Computational Biology Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Tayyaba Irum
- Services Hospital, Services Institute of Medical Sciences, Lahore, Pakistan
| | - Raik Grünberg
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Computational Biology Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Stefan T. Arold
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Computational Biology Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Centre de Biologie Structurale (CBS), INSERM, CNRS, Université de Montpellier, Montpellier, France
- *Correspondence: Zahid Ur Rehman, ; Stefan T. Arold,
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18
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Momin AA, Mendes T, Barthe P, Faure C, Hong S, Yu P, Kadaré G, Jaremko M, Girault JA, Jaremko Ł, Arold ST. PYK2 senses calcium through a disordered dimerization and calmodulin-binding element. Commun Biol 2022; 5:800. [PMID: 35945264 PMCID: PMC9363500 DOI: 10.1038/s42003-022-03760-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 07/22/2022] [Indexed: 11/25/2022] Open
Abstract
Multidomain kinases use many ways to integrate and process diverse stimuli. Here, we investigated the mechanism by which the protein tyrosine kinase 2-beta (PYK2) functions as a sensor and effector of cellular calcium influx. We show that the linker between the PYK2 kinase and FAT domains (KFL) encompasses an unusual calmodulin (CaM) binding element. PYK2 KFL is disordered and engages CaM through an ensemble of transient binding events. Calcium increases the association by promoting structural changes in CaM that expose auxiliary interaction opportunities. KFL also forms fuzzy dimers, and dimerization is enhanced by CaM binding. As a monomer, however, KFL associates with the PYK2 FERM-kinase fragment. Thus, we identify a mechanism whereby calcium influx can promote PYK2 self-association, and hence kinase-activating trans-autophosphorylation. Collectively, our findings describe a flexible protein module that expands the paradigms for CaM binding and self-association, and their use for controlling kinase activity. Protein tyrosine kinase 2-beta is shown to function as a sensor and effector of cellular calcium influx through self-association.
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Affiliation(s)
- Afaque A Momin
- Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.,Bioscience Program, Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Tiago Mendes
- Inserm UMR-S 1270, Sorbonne Université, Faculty of Sciences and Engineering, Institut du Fer à Moulin, 75005, Paris, France
| | - Philippe Barthe
- Centre de Biologie Structurale (CBS), University Montpellier, INSERM U1054, CNRS UMR 5048, 34090, Montpellier, France
| | - Camille Faure
- Inserm UMR-S 1270, Sorbonne Université, Faculty of Sciences and Engineering, Institut du Fer à Moulin, 75005, Paris, France
| | - SeungBeom Hong
- Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.,Bioscience Program, Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Piao Yu
- Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.,Bioscience Program, Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Gress Kadaré
- Inserm UMR-S 1270, Sorbonne Université, Faculty of Sciences and Engineering, Institut du Fer à Moulin, 75005, Paris, France
| | - Mariusz Jaremko
- Bioscience Program, Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Jean-Antoine Girault
- Inserm UMR-S 1270, Sorbonne Université, Faculty of Sciences and Engineering, Institut du Fer à Moulin, 75005, Paris, France
| | - Łukasz Jaremko
- Bioscience Program, Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Stefan T Arold
- Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia. .,Bioscience Program, Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia. .,Centre de Biologie Structurale (CBS), University Montpellier, INSERM U1054, CNRS UMR 5048, 34090, Montpellier, France.
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19
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Aboheimed GI, AlRasheed MM, Almudimeegh S, Peña-Guerra KA, Cardona-Londoño KJ, Salih MA, Seidahmed MZ, Al-Mohanna F, Colak D, Harvey RJ, Harvey K, Arold ST, Kaya N, Ruiz AJ. Clinical, genetic, and functional characterization of the glycine receptor β-subunit A455P variant in a family affected by hyperekplexia syndrome. J Biol Chem 2022; 298:102018. [PMID: 35526563 PMCID: PMC9241032 DOI: 10.1016/j.jbc.2022.102018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 04/21/2022] [Accepted: 04/27/2022] [Indexed: 12/01/2022] Open
Abstract
Hyperekplexia is a rare neurological disorder characterized by exaggerated startle responses affecting newborns with the hallmark characteristics of hypertonia, apnea, and noise or touch-induced nonepileptic seizures. The genetic causes of the disease can vary, and several associated genes and mutations have been reported to affect glycine receptors (GlyRs); however, the mechanistic links between GlyRs and hyperekplexia are not yet understood. Here, we describe a patient with hyperekplexia from a consanguineous family. Extensive genetic screening using exome sequencing coupled with autozygome analysis and iterative filtering supplemented by in silico prediction identified that the patient carries the homozygous missense mutation A455P in GLRB, which encodes the GlyR β-subunit. To unravel the physiological and molecular effects of A455P on GlyRs, we used electrophysiology in a heterologous system as well as immunocytochemistry, confocal microscopy, and cellular biochemistry. We found a reduction in glycine-evoked currents in N2A cells expressing the mutation compared to WT cells. Western blot analysis also revealed a reduced amount of GlyR β protein both in cell lysates and isolated membrane fractions. In line with the above observations, coimmunoprecipitation assays suggested that the GlyR α1-subunit retained coassembly with βA455P to form membrane-bound heteromeric receptors. Finally, structural modeling showed that the A455P mutation affected the interaction between the GlyR β-subunit transmembrane domain 4 and the other helices of the subunit. Taken together, our study identifies and validates a novel loss-of-function mutation in GlyRs whose pathogenicity is likely to cause hyperekplexia in the affected individual.
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Affiliation(s)
- Ghada I Aboheimed
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia; Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh, Kingdom of Saudi Arabia; Department of Pharmacology, The School of Pharmacy, University College London, London, United Kingdom
| | - Maha M AlRasheed
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Sultan Almudimeegh
- Department of Pharmacology, The School of Pharmacy, University College London, London, United Kingdom; Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Karla A Peña-Guerra
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia
| | - Kelly J Cardona-Londoño
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia
| | - Mustafa A Salih
- Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Mohammed Z Seidahmed
- Department of Pediatrics, Security Forces Hospital, Riyadh, Kingdom of Saudi Arabia
| | - Futwan Al-Mohanna
- Department of Cell Biology, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia
| | - Dilek Colak
- Department of Molecular Oncology, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia
| | - Robert J Harvey
- School of Health and Behavioural Sciences, University of the Sunshine Coast, Maroochydore, Queensland, Australia; Sunshine Coast Health Institute, Birtinya, Queensland, Australia
| | - Kirsten Harvey
- Department of Pharmacology, The School of Pharmacy, University College London, London, United Kingdom
| | - Stefan T Arold
- Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia; Centre de Biologie Structurale, CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Namik Kaya
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia.
| | - Arnaud J Ruiz
- Department of Pharmacology, The School of Pharmacy, University College London, London, United Kingdom.
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20
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Khan A, Bruno LP, Alomar F, Umair M, Pinto AM, Khan AA, Khan A, Saima, Fabbiani A, Zguro K, Furini S, Mencarelli MA, Renieri A, Resciniti S, Peña-Guerra KA, Guzmán-Vega FJ, Arold ST, Ariani F, Khan SN. SPTBN5, Encoding the βV-Spectrin Protein, Leads to a Syndrome of Intellectual Disability, Developmental Delay, and Seizures. Front Mol Neurosci 2022; 15:877258. [PMID: 35782384 PMCID: PMC9248767 DOI: 10.3389/fnmol.2022.877258] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 04/07/2022] [Indexed: 12/14/2022] Open
Abstract
Whole exome sequencing has provided significant opportunities to discover novel candidate genes for intellectual disability and autism spectrum disorders. Variants in the spectrin genes SPTAN1, SPTBN1, SPTBN2, and SPTBN4 have been associated with neurological disorders; however, SPTBN5 gene-variants have not been associated with any human disorder. This is the first report that associates SPTBN5 gene variants (ENSG00000137877: c.266A>C; p.His89Pro, c.9784G>A; p.Glu3262Lys, c.933C>G; p.Tyr311Ter, and c.8809A>T; p.Asn2937Tyr) causing neurodevelopmental phenotypes in four different families. The SPTBN5-associated clinical traits in our patients include intellectual disability (mild to severe), aggressive tendencies, accompanied by variable features such as craniofacial and physical dysmorphisms, autistic behavior, and gastroesophageal reflux. We also provide a review of the existing literature related to other spectrin genes, which highlights clinical features partially overlapping with SPTBN5.
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21
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Huntington B, Zhao L, Bron P, Shahul Hameed UF, Arold ST, Qureshi BM. Thicker Ice Improves the Integrity and Angular Distribution of CDC48A Hexamers on Cryo-EM Grids. Front Mol Biosci 2022; 9:890390. [PMID: 35782862 PMCID: PMC9247313 DOI: 10.3389/fmolb.2022.890390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 05/26/2022] [Indexed: 11/21/2022] Open
Abstract
Many cryogenic electron microscopy (cryo-EM) single particle analyses are constrained by the sample preparation step upon which aggregation, dissociation, and/or preferential orientation of particles can be introduced. Here, we report how we solved these problems in the case of CDC48A, a hexameric AAA ATPase from Arabidopsis thaliana. CDC48A hexamers are well preserved under negative staining conditions but disassemble during grid freezing using the classical blotting method. Vitrification of grids using the blot-free Chameleon method preserved the integrity of particles but resulted in their strong preferential orientation. We then used a strategy where we improved in parallel the purification of CDC48A and the conditions for cryo-EM data acquisition. Indeed, we noted that images taken from thicker ice presented an even distribution of intact particles with random orientations, but resulted in a lower image resolution. Consequently, in our case, distribution, orientation, image resolution, and the integrity of particles were tightly correlated with ice thickness. By combining the more homogeneous and stable CDC48A hexamers resulting from our improved purification protocol with an iterative search across different ice thicknesses, we identified an intermediate thickness that retained sufficiently high-resolution structural information while maintaining a complete distribution of particle orientations. Our approach may provide a simple, fast, and generally applicable strategy to record data of sufficient quality under standard laboratory and microscope settings. This method may be of particular value when time and resources are limited.
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Affiliation(s)
- Brandon Huntington
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Computational Biology Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Lingyun Zhao
- Imaging and Characterization Core Lab, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Patrick Bron
- Centre de Biologie Structurale (CBS), INSERM, CNRS, Université de Montpellier, Montpellier, France
| | - Umar F. Shahul Hameed
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Computational Biology Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- *Correspondence: Umar F. Shahul Hameed, ; Stefan T. Arold, ; Bilal M. Qureshi,
| | - Stefan T. Arold
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Computational Biology Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Centre de Biologie Structurale (CBS), INSERM, CNRS, Université de Montpellier, Montpellier, France
- *Correspondence: Umar F. Shahul Hameed, ; Stefan T. Arold, ; Bilal M. Qureshi,
| | - Bilal M. Qureshi
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Computational Biology Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Division of Structural Biology (Strubi), University of Oxford, Oxford, United Kingdom
- Scientific Center of Optical and Electron Microscopy (ScopeM), ETH Zurich, Zurich, Switzerland
- *Correspondence: Umar F. Shahul Hameed, ; Stefan T. Arold, ; Bilal M. Qureshi,
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22
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Abstract
Cell-free transcription and translation systems promise to accelerate and simplify the engineering of proteins, biological circuits and metabolic pathways. Their encapsulation on microfluidic platforms can generate millions of cell-free reactions in picoliter volume droplets. However, current methods struggle to create DNA diversity between droplets while also reaching sufficient protein expression levels. In particular, efficient multi-gene expression has remained elusive. We here demonstrate that co-encapsulation of DNA-coated beads with a defined cell-free system allows high protein expression while also supporting genetic diversity between individual droplets. We optimize DNA loading on commercially available microbeads through direct binding as well as through the sequential coupling of up to three genes via a solid-phase Golden Gate assembly or BxB1 integrase-based recombineering. Encapsulation with an off-the-shelf microfluidics device allows for single or multiple protein expression from a single DNA-coated bead per 14 pL droplet. We envision that this approach will help to scale up and parallelize the rapid prototyping of more complex biological systems.
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Affiliation(s)
- Ana Maria Restrepo Sierra
- Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia
- KAUST Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia
- Bionanoscience Department/Applied Sciences, Technische Universiteit Delft, Delft, The Netherlands
| | - Stefan T. Arold
- Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia
- KAUST Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia
- Centre de Biologie Structurale (CBS)/CNRS/INSERM, Université Montpellier, Montpellier, France
| | - Raik Grünberg
- Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia
- KAUST Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia
- * E-mail:
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23
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Zarban RA, Hameed UFS, Jamil M, Ota T, Wang JY, Arold ST, Asami T, Al-Babili S. Rational design of Striga hermonthica-specific seed germination inhibitors. Plant Physiol 2022; 188:1369-1384. [PMID: 34850204 PMCID: PMC8825254 DOI: 10.1093/plphys/kiab547] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 10/11/2021] [Indexed: 05/20/2023]
Abstract
The obligate hemiparasitic weed Striga hermonthica grows on cereal roots and presents a severe threat to global food security by causing enormous yield losses, particularly in sub-Saharan Africa. The rapidly increasing Striga seed bank in infested soils provides a major obstacle in controlling this weed. Striga seeds require host-derived strigolactones (SLs) for germination, and corresponding antagonists could be used as germination inhibitors. Recently, we demonstrated that the common detergent Triton X-100 is a specific inhibitor of Striga seed germination by binding noncovalently to its receptor, S. hermonthica HYPO-SENSITIVE TO LIGHT 7 (ShHTL7), without blocking the rice (Oryza sativa) SL receptor DWARF14 (OsD14). Moreover, triazole ureas, the potent covalently binding antagonists of rice SL perception with much higher activity toward OsD14, showed inhibition of Striga but were less specific. Considering that Triton X-100 is not suitable for field application and by combining structural elements of Triton and triazole urea, we developed two hybrid compounds, KK023-N1 and KK023-N2, as potential Striga-specific germination inhibitors. Both compounds blocked the hydrolysis activity of ShHTL7 but did not affect that of OsD14. Binding of KK023-N1 diminished ShHTL7 interaction with S. hermonthica MORE AXILLARY BRANCHING 2, a major component in SL signal transduction, and increased ShHTL7 thermal specificity. Docking studies indicate that KK023-N1 binding is not covalent but is caused by hydrophobic interactions. Finally, in vitro and greenhouse tests revealed specific inhibition of Striga seed germination, which led to a 38% reduction in Striga infestation in pot experiments. These findings reveal that KK023-N1 is a potential candidate for combating Striga and a promising basis for rational design and development of further Striga-specific herbicides.
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Affiliation(s)
- Randa A Zarban
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, The BioActives Lab, Thuwal, 23955-6900, Saudi Arabia
| | - Umar F Shahul Hameed
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Computational Bioscience Research Center, Thuwal, 23955-6900, Saudi Arabia
| | - Muhammad Jamil
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, The BioActives Lab, Thuwal, 23955-6900, Saudi Arabia
| | - Tsuyoshi Ota
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Jian You Wang
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, The BioActives Lab, Thuwal, 23955-6900, Saudi Arabia
| | - Stefan T Arold
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Computational Bioscience Research Center, Thuwal, 23955-6900, Saudi Arabia
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, Montpellier, 34090 France
| | - Tadao Asami
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, Montpellier, 34090 France
| | - Salim Al-Babili
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, The BioActives Lab, Thuwal, 23955-6900, Saudi Arabia
- Author for communication:
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24
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Shahul Hameed U, Haider I, Jamil M, Guo X, Zarban RA, Kim D, Al‐Babili S, Arold ST. Structural basis for specific inhibition of the highly sensitive ShHTL7 receptor. EMBO Rep 2022; 23:e54145. [PMID: 35238175 PMCID: PMC8892310 DOI: 10.15252/embr.202154145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 01/13/2022] [Indexed: 03/28/2024] Open
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25
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Díaz-Galicia E, Grünberg R, Arold ST. How to Find the Right RNA-Sensing CRISPR-Cas System for an In Vitro Application. Biosensors 2022; 12:bios12020053. [PMID: 35200314 PMCID: PMC8869480 DOI: 10.3390/bios12020053] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/17/2022] [Accepted: 01/18/2022] [Indexed: 12/26/2022]
Abstract
CRISPR-Cas systems have a great and still largely untapped potential for in vitro applications, in particular, for RNA biosensing. However, there is currently no systematic guide on selecting the most appropriate RNA-targeting CRISPR-Cas system for a given application among thousands of potential candidates. We provide an overview of the currently described Cas effector systems and review existing Cas-based RNA detection methods. We then propose a set of systematic selection criteria for selecting CRISPR-Cas candidates for new applications. Using this approach, we identify four candidates for in vitro RNA.
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Affiliation(s)
- Escarlet Díaz-Galicia
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia;
| | - Raik Grünberg
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia;
- Correspondence: (R.G.); (S.T.A.)
| | - Stefan T. Arold
- Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia;
- Centre de Biologie Structurale (CBS), INSERM, CNRS, Université de Montpellier, F-34090 Montpellier, France
- Correspondence: (R.G.); (S.T.A.)
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26
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Vogeley C, Sondermann NC, Woeste S, Momin AA, Gilardino V, Hartung F, Heinen M, Maaß SK, Mescher M, Pollet M, Rolfes KM, Vogel CFA, Rossi A, Lang D, Arold ST, Nakamura M, Haarmann-Stemmann T. Unraveling the differential impact of PAHs and dioxin-like compounds on AKR1C3 reveals the EGFR extracellular domain as a critical determinant of the AHR response. Environ Int 2022; 158:106989. [PMID: 34991250 PMCID: PMC8852774 DOI: 10.1016/j.envint.2021.106989] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/14/2021] [Accepted: 11/16/2021] [Indexed: 06/14/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs), dioxin-like compounds (DLCs) and structurally-related environmental pollutants may contribute to the pathogenesis of various diseases and disorders, primarily by activating the aryl hydrocarbon receptor (AHR) and modulating downstream cellular responses. Accordingly, AHR is considered an attractive molecular target for preventive and therapeutic measures. However, toxicological risk assessment of AHR-modulating compounds as well as drug development is complicated by the fact that different ligands elicit remarkably different AHR responses. By elucidating the differential effects of PAHs and DLCs on aldo-keto reductase 1C3 expression and associated prostaglandin D2 metabolism, we here provide evidence that the epidermal growth factor receptor (EGFR) substantially shapes AHR ligand-induced responses in human epithelial cells, i.e. primary and immortalized keratinocytes and breast cancer cells. Exposure to benzo[a]pyrene (B[a]P) and dioxin-like polychlorinated biphenyl (PCB) 126 resulted in a rapid c-Src-mediated phosphorylation of EGFR. Moreover, both AHR agonists stimulated protein kinase C activity and enhanced the ectodomain shedding of cell surface-bound EGFR ligands. However, only upon B[a]P treatment, this process resulted in an auto-/paracrine activation of EGFR and a subsequent induction of aldo-keto reductase 1C3 and 11-ketoreduction of prostaglandin D2. Receptor binding and internalization assays, docking analyses and mutational amino acid exchange confirmed that DLCs, but not B[a]P, bind to the EGFR extracellular domain, thereby blocking EGFR activation by growth factors. Finally, nanopore long-read RNA-seq revealed hundreds of genes, whose expression is regulated by B[a]P, but not by PCB126, and sensitive towards pharmacological EGFR inhibition. Our data provide novel mechanistic insights into the ligand response of AHR signaling and identify EGFR as an effector of environmental chemicals.
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Affiliation(s)
- Christian Vogeley
- IUF - Leibniz-Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
| | - Natalie C Sondermann
- IUF - Leibniz-Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
| | - Selina Woeste
- IUF - Leibniz-Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
| | - Afaque A Momin
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Viola Gilardino
- IUF - Leibniz-Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
| | - Frederick Hartung
- IUF - Leibniz-Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
| | - Markus Heinen
- IUF - Leibniz-Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
| | - Sophia K Maaß
- IUF - Leibniz-Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
| | - Melina Mescher
- IUF - Leibniz-Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
| | - Marius Pollet
- IUF - Leibniz-Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
| | - Katharina M Rolfes
- IUF - Leibniz-Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
| | - Christoph F A Vogel
- Department of Environmental Toxicology and Center for Health and the Environment, University of California, Davis, CA 95616, USA
| | - Andrea Rossi
- IUF - Leibniz-Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
| | - Dieter Lang
- Bayer AG, Pharmaceuticals, Research Center, 42096 Wuppertal, Germany
| | - Stefan T Arold
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia; Centre de Biologie Structurale (CBS), INSERM, CNRS, Université de Montpellier, F-34090 Montpellier, France
| | - Motoki Nakamura
- IUF - Leibniz-Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany; Department of Environmental and Geriatric Dermatology, Graduate School of Medical Sciences, Nagoya City University, Nagoya 467-8601, Japan
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27
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Aldhalaan H, AlBakheet A, AlRuways S, AlMutairi N, AlNakiyah M, AlGhofaili R, Cardona-Londoño KJ, Alahmadi KO, AlQudairy H, AlRasheed MM, Colak D, Arold ST, Kaya N. A Novel GEMIN4 Variant in a Consanguineous Family Leads to Neurodevelopmental Impairment with Severe Microcephaly, Spastic Quadriplegia, Epilepsy, and Cataracts. Genes (Basel) 2021; 13:genes13010092. [PMID: 35052432 PMCID: PMC8774908 DOI: 10.3390/genes13010092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 12/24/2021] [Accepted: 12/25/2021] [Indexed: 12/24/2022] Open
Abstract
Pathogenic variants in GEMIN4 contribute to a hereditary disorder characterized by neurodevelopmental features, microcephaly, cataracts, and renal abnormalities (known as NEDMCR). To date, only two homoallelic variations have been linked to the disease. Moreover, clinical features associated with the variants have not been fully elucidated yet. Here, we identified a novel variant in GEMIN4 (NM_015721:exon2:c.440A>G:p.His147Arg) in two siblings from a consanguineous Saudi family by using whole exome sequencing followed by Sanger sequence verification. We comprehensively investigated the patients’ clinical features, including brain imaging and electroencephalogram findings, and compared their phenotypic characteristics with those of previously reported cases. In silico prediction and structural modeling support that the p.His147Arg variant is pathogenic.
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Affiliation(s)
- Hesham Aldhalaan
- Neurosciences Department, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia;
| | - Albandary AlBakheet
- Translational Genomic Department, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia; (A.A.); (S.A.); (N.A.); (M.A.); (R.A.); (H.A.)
| | - Sarah AlRuways
- Translational Genomic Department, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia; (A.A.); (S.A.); (N.A.); (M.A.); (R.A.); (H.A.)
- Clinical Pharmacy Department, College of Pharmacy, King Saud University, Riyadh 11211, Saudi Arabia;
| | - Nouf AlMutairi
- Translational Genomic Department, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia; (A.A.); (S.A.); (N.A.); (M.A.); (R.A.); (H.A.)
- Clinical Pharmacy Department, College of Pharmacy, King Saud University, Riyadh 11211, Saudi Arabia;
| | - Maha AlNakiyah
- Translational Genomic Department, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia; (A.A.); (S.A.); (N.A.); (M.A.); (R.A.); (H.A.)
- Clinical Pharmacy Department, College of Pharmacy, King Saud University, Riyadh 11211, Saudi Arabia;
| | - Reema AlGhofaili
- Translational Genomic Department, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia; (A.A.); (S.A.); (N.A.); (M.A.); (R.A.); (H.A.)
- Clinical Pharmacy Department, College of Pharmacy, King Saud University, Riyadh 11211, Saudi Arabia;
| | - Kelly J. Cardona-Londoño
- Division of Biological and Environmental Sciences and Engineering (BESE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; (K.J.C.-L.); (S.T.A.)
| | - Khalid Omar Alahmadi
- Department of Radiology, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia;
| | - Hanan AlQudairy
- Translational Genomic Department, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia; (A.A.); (S.A.); (N.A.); (M.A.); (R.A.); (H.A.)
| | - Maha M. AlRasheed
- Clinical Pharmacy Department, College of Pharmacy, King Saud University, Riyadh 11211, Saudi Arabia;
| | - Dilek Colak
- Department of Biostatistics, Epidemiology and Scientific Computing, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia;
| | - Stefan T. Arold
- Division of Biological and Environmental Sciences and Engineering (BESE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; (K.J.C.-L.); (S.T.A.)
| | - Namik Kaya
- Translational Genomic Department, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia; (A.A.); (S.A.); (N.A.); (M.A.); (R.A.); (H.A.)
- Correspondence: ; Tel.: +966-11-4647272 (ext. 39612)
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28
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Medico Salsench E, Maroofian R, Deng R, Lanko K, Nikoncuk A, Pérez B, Sánchez-Lijarcio O, Ibáñez-Mico S, Wojcik A, Vargas M, Abbas Al-Sannaa N, Girgis MY, Silveira TRD, Bauer P, Schroeder A, Fong CT, Begtrup A, Babaei M, Toosi MB, Ashrafzadeh F, Imannezhad S, Doosti M, Ahangari N, Najarzadeh Torbati P, Ghayoor Karimiani E, Murphy D, Cali E, Kaya IH, AlMuhaizea M, Colak D, Cardona-Londoño KJ, Arold ST, Houlden H, Bertoli-Avella A, Kaya N, Barakat TS. Expanding the mutational landscape and clinical phenotype of the YIF1B related brain disorder. Brain 2021; 144:e85. [PMID: 34373908 PMCID: PMC8634087 DOI: 10.1093/brain/awab297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 06/27/2021] [Indexed: 11/18/2022] Open
Affiliation(s)
- Eva Medico Salsench
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Reza Maroofian
- Department of Neuromuscular Disorders, UCL Queen Square Institute of Neurology, London WC1N 3BG, UK
| | - Ruizhi Deng
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Kristina Lanko
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Anita Nikoncuk
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Belén Pérez
- Centro de Diagnóstico de Enfermedades Moleculares. Centro de Biología Molecular, Universidad Autonoma de Madrid, CIBER Enfermedades Raras, IdiPAZ, Madrid, Spain
| | - Obdulia Sánchez-Lijarcio
- Centro de Diagnóstico de Enfermedades Moleculares. Centro de Biología Molecular, Universidad Autonoma de Madrid, CIBER Enfermedades Raras, IdiPAZ, Madrid, Spain
| | | | - Antonina Wojcik
- Gillette Children's Specialty Healthcare, St. Paul, MN 55101, USA
| | - Marcelo Vargas
- Gillette Children's Specialty Healthcare, St. Paul, MN 55101, USA
| | | | - Marian Y Girgis
- Pediatric Department, Children's Hospital, Cairo University, Cairo, Egypt
| | | | | | - Audrey Schroeder
- Division of Medical Genetics, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Chin-To Fong
- Departments of Pediatrics and of Medicine, University of Rochester Medical Center, Rochester, NY 14642, USA
| | | | - Meisam Babaei
- Department of Pediatrics, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Mehran Beiraghi Toosi
- Department of Pediatrics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Farah Ashrafzadeh
- Department of Pediatrics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Shima Imannezhad
- Department of Pediatrics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Doosti
- Department of Medical Genetics, Next Generation Genetic Polyclinic, Mashhad, Iran
| | - Najmeh Ahangari
- Department of Medical Genetics, Next Generation Genetic Polyclinic, Mashhad, Iran
| | | | - Ehsan Ghayoor Karimiani
- Department of Medical Genetics, Next Generation Genetic Polyclinic, Mashhad, Iran
- Molecular and Clinical Sciences Institute, St. George’s, University of London, London SW17 0RE, UK
- Innovative Medical Research Center, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - David Murphy
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, University College London, UK
| | - Elisa Cali
- Department of Neuromuscular Disorders, UCL Queen Square Institute of Neurology, London WC1N 3BG, UK
| | - Ibrahim H Kaya
- College of Medicine, AlFaisal University, Riyadh, Kingdom of Saudi Arabia
| | - Mohammad AlMuhaizea
- College of Medicine, AlFaisal University, Riyadh, Kingdom of Saudi Arabia
- Department of Neurosciences, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, Kingdom of Saudi Arabia
| | - Dilek Colak
- Department of Biostatistics, Epidemiology and Scientific Computing, KFSHRC, Riyadh, Kingdom of Saudi Arabia
| | - Kelly J Cardona-Londoño
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Stefan T Arold
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
- Centre de Biologie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
| | - Henry Houlden
- Department of Neuromuscular Disorders, UCL Queen Square Institute of Neurology, London WC1N 3BG, UK
| | | | - Namik Kaya
- Department of Translational Genomics, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Kingdom of Saudi Arabia
| | - Tahsin Stefan Barakat
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
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29
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Khan A, Molitor A, Mayeur S, Zhang G, Rinaldi B, Lannes B, Lhermitte B, Umair M, Arold ST, Friant S, Rastegar S, Anheim M, Bahram S, Carapito R. A Homozygous Missense Variant in PPP1R1B/DARPP-32 Is Associated With Generalized Complex Dystonia. Mov Disord 2021; 37:365-374. [PMID: 34820905 DOI: 10.1002/mds.28861] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/16/2021] [Accepted: 10/18/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The dystonias are a heterogeneous group of hyperkinetic disorders characterized by sustained or intermittent muscle contractions that cause abnormal movements and/or postures. Although more than 200 causal genes are known, many cases of primary dystonia have no clear genetic cause. OBJECTIVES To identify the causal gene in a consanguineous family with three siblings affected by a complex persistent generalized dystonia, generalized epilepsy, and mild intellectual disability. METHODS We performed exome sequencing in the parents and two affected siblings and characterized the expression of the identified gene by immunohistochemistry in control human and zebrafish brains. RESULTS We identified a novel missense variant (c.142G>A (NM_032192); p.Glu48Lys) in the protein phosphatase 1 regulatory inhibitor subunit 1B gene (PPP1R1B) that was homozygous in all three siblings and heterozygous in the parents. This gene is also known as dopamine and cAMP-regulated neuronal phosphoprotein 32 (DARPP-32) and has been involved in the pathophysiology of abnormal movements. The uncovered variant is absent in public databases and modifies the conserved glutamate 48 localized close to the serine 45 phosphorylation site. The PPP1R1B protein was shown to be expressed in cells and regions involved in movement control, including projection neurons of the caudate-putamen, substantia nigra neuropil, and cerebellar Purkinje cells. The latter cells were also confirmed to be positive for PPP1R1B expression in the zebrafish brain. CONCLUSIONS We report the association of a PPP1R1B/DARPP-32 variant with generalized dystonia in man. It might be relevant to include the sequencing of this new gene in the diagnosis of patients with otherwise unexplained movement disorders. © 2021 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Amjad Khan
- Laboratoire d'ImmunoRhumatologie Moléculaire, Plateforme GENOMAX, INSERM UMR_S 1109, Faculté de Médecine, Fédération Hospitalo-Universitaire OMICARE, ITI TRANSPLANTEX NG, Université de Strasbourg, Strasbourg, France.,Strasbourg Federation of Translational Medicine (FMTS), Strasbourg University, Strasbourg, France.,Faculty of Science, Department of Biological Sciences (Zoology), University of Lakki Marwat, Lakki Marwat, Khyber Pakhtunkhwa, Pakistan
| | - Anne Molitor
- Laboratoire d'ImmunoRhumatologie Moléculaire, Plateforme GENOMAX, INSERM UMR_S 1109, Faculté de Médecine, Fédération Hospitalo-Universitaire OMICARE, ITI TRANSPLANTEX NG, Université de Strasbourg, Strasbourg, France.,Strasbourg Federation of Translational Medicine (FMTS), Strasbourg University, Strasbourg, France
| | - Sylvain Mayeur
- Laboratoire d'ImmunoRhumatologie Moléculaire, Plateforme GENOMAX, INSERM UMR_S 1109, Faculté de Médecine, Fédération Hospitalo-Universitaire OMICARE, ITI TRANSPLANTEX NG, Université de Strasbourg, Strasbourg, France.,Strasbourg Federation of Translational Medicine (FMTS), Strasbourg University, Strasbourg, France.,Department of Pathology, Strasbourg University Hospitals, Strasbourg, France
| | - Gaoqun Zhang
- Institute of Biological and Chemical Systems-Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Bruno Rinaldi
- Laboratoire de Génétique Moléculaire, Génomique, Microbiologie, GMGM UMR7156 CNRS/Université de Strasbourg, IPCB, Strasbourg, France
| | - Béatrice Lannes
- Strasbourg Federation of Translational Medicine (FMTS), Strasbourg University, Strasbourg, France.,Department of Pathology, Strasbourg University Hospitals, Strasbourg, France
| | - Benoît Lhermitte
- Strasbourg Federation of Translational Medicine (FMTS), Strasbourg University, Strasbourg, France.,Department of Pathology, Strasbourg University Hospitals, Strasbourg, France
| | - Muhammad Umair
- Medical Genomics Research Department, King Abdullah International Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia.,Department of Life Sciences, School of Science, University of Management and Technology (UMT), Lahore, Pakistan
| | - Stefan T Arold
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Thuwal, Saudi Arabia.,Centre de Biologie Structurale, CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Sylvie Friant
- Laboratoire de Génétique Moléculaire, Génomique, Microbiologie, GMGM UMR7156 CNRS/Université de Strasbourg, IPCB, Strasbourg, France
| | - Sepand Rastegar
- Institute of Biological and Chemical Systems-Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Mathieu Anheim
- Strasbourg Federation of Translational Medicine (FMTS), Strasbourg University, Strasbourg, France.,Department of Neurology, Strasbourg University Hospitals, Strasbourg, France.,INSERM UMR_S 964; CNRS UMR 7104, University of Strasbourg, Illkirch-Graffenstaden, France
| | - Seiamak Bahram
- Laboratoire d'ImmunoRhumatologie Moléculaire, Plateforme GENOMAX, INSERM UMR_S 1109, Faculté de Médecine, Fédération Hospitalo-Universitaire OMICARE, ITI TRANSPLANTEX NG, Université de Strasbourg, Strasbourg, France.,Strasbourg Federation of Translational Medicine (FMTS), Strasbourg University, Strasbourg, France.,Service d'Immunologie Biologique, Plateau Technique de Biologie, Pôle de Biologie, Nouvel Hôpital Civil, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Raphael Carapito
- Laboratoire d'ImmunoRhumatologie Moléculaire, Plateforme GENOMAX, INSERM UMR_S 1109, Faculté de Médecine, Fédération Hospitalo-Universitaire OMICARE, ITI TRANSPLANTEX NG, Université de Strasbourg, Strasbourg, France.,Strasbourg Federation of Translational Medicine (FMTS), Strasbourg University, Strasbourg, France.,Service d'Immunologie Biologique, Plateau Technique de Biologie, Pôle de Biologie, Nouvel Hôpital Civil, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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30
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Renn D, Shepard L, Vancea A, Karan R, Arold ST, Rueping M. Novel Enzymes From the Red Sea Brine Pools: Current State and Potential. Front Microbiol 2021; 12:732856. [PMID: 34777282 PMCID: PMC8578733 DOI: 10.3389/fmicb.2021.732856] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 10/05/2021] [Indexed: 11/23/2022] Open
Abstract
The Red Sea is a marine environment with unique chemical characteristics and physical topographies. Among the various habitats offered by the Red Sea, the deep-sea brine pools are the most extreme in terms of salinity, temperature and metal contents. Nonetheless, the brine pools host rich polyextremophilic bacterial and archaeal communities. These microbial communities are promising sources for various classes of enzymes adapted to harsh environments - extremozymes. Extremozymes are emerging as novel biocatalysts for biotechnological applications due to their ability to perform catalytic reactions under harsh biophysical conditions, such as those used in many industrial processes. In this review, we provide an overview of the extremozymes from different Red Sea brine pools and discuss the overall biotechnological potential of the Red Sea proteome.
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Affiliation(s)
- Dominik Renn
- KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Institute of Organic Chemistry, RWTH Aachen, Aachen, Germany
| | - Lera Shepard
- KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Alexandra Vancea
- Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Ram Karan
- KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Stefan T. Arold
- Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Centre de Biologie Structurale, CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Magnus Rueping
- KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Institute for Experimental Molecular Imaging (ExMI), University Clinic, RWTH Aachen, Aachen, Germany
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31
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Mourier T, de Alvarenga DAM, Kaushik A, de Pina-Costa A, Douvropoulou O, Guan Q, Guzmán-Vega FJ, Forrester S, de Abreu FVS, Júnior CB, de Souza Junior JC, Moreira SB, Hirano ZMB, Pissinatti A, Ferreira-da-Cruz MDF, de Oliveira RL, Arold ST, Jeffares DC, Brasil P, de Brito CFA, Culleton R, Daniel-Ribeiro CT, Pain A. The genome of the zoonotic malaria parasite Plasmodium simium reveals adaptations to host switching. BMC Biol 2021; 19:219. [PMID: 34592986 PMCID: PMC8485552 DOI: 10.1186/s12915-021-01139-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 09/03/2021] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND Plasmodium simium, a malaria parasite of non-human primates (NHP), was recently shown to cause zoonotic infections in humans in Brazil. We sequenced the P. simium genome to investigate its evolutionary history and to identify any genetic adaptions that may underlie the ability of this parasite to switch between host species. RESULTS Phylogenetic analyses based on whole genome sequences of P. simium from humans and NHPs reveals that P. simium is monophyletic within the broader diversity of South American Plasmodium vivax, suggesting P. simium first infected NHPs as a result of a host switch of P. vivax from humans. The P. simium isolates show the closest relationship to Mexican P. vivax isolates. Analysis of erythrocyte invasion genes reveals differences between P. vivax and P. simium, including large deletions in the Duffy-binding protein 1 (DBP1) and reticulocyte-binding protein 2a genes of P. simium. Analysis of P. simium isolated from NHPs and humans revealed a deletion of 38 amino acids in DBP1 present in all human-derived isolates, whereas NHP isolates were multi-allelic. CONCLUSIONS Analysis of the P. simium genome confirmed a close phylogenetic relationship between P. simium and P. vivax, and suggests a very recent American origin for P. simium. The presence of the DBP1 deletion in all human-derived isolates tested suggests that this deletion, in combination with other genetic changes in P. simium, may facilitate the invasion of human red blood cells and may explain, at least in part, the basis of the recent zoonotic infections.
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Affiliation(s)
- Tobias Mourier
- Pathogen Genomics Laboratory, Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Denise Anete Madureira de Alvarenga
- Grupo de Pesquisa em Biologia Molecular e Imunologia da Malária, Instituto René Rachou, Fundação Oswaldo Cruz (Fiocruz), Belo Horizonte, MG, 30190-009, Brazil
| | - Abhinav Kaushik
- Pathogen Genomics Laboratory, Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Anielle de Pina-Costa
- Centro de Pesquisa, Diagnóstico e Treinamento em Malária (CPD-Mal), Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil
- Laboratório de Pesquisa Clínica em Doenças Febris Agudas, Instituto Nacional de Infectologia Evandro Chagas, Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil
- Centro Universitário Serra dos Órgãos (UNIFESO), Teresópolis, RJ, 25964-004, Brazil
| | - Olga Douvropoulou
- Pathogen Genomics Laboratory, Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Qingtian Guan
- Pathogen Genomics Laboratory, Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Francisco J Guzmán-Vega
- Computational Bioscience Research Center, Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Sarah Forrester
- Department of Biology and York Biomedical Research Institute, University of York, Wentworth Way, York, YO10 5DD, UK
| | - Filipe Vieira Santos de Abreu
- Centro de Pesquisa, Diagnóstico e Treinamento em Malária (CPD-Mal), Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz (IOC), Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil
| | - Cesare Bianco Júnior
- Centro de Pesquisa, Diagnóstico e Treinamento em Malária (CPD-Mal), Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil
- Laboratório de Pesquisa em Malária, IOC, Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil
| | - Julio Cesar de Souza Junior
- Universidade Regional de Blumenau (FURB), Centro de Pesquisas Biológicas de Indaial (CEPESBI)/ Projeto bugio, Blumenau, Indaial, SC, Brazil
| | | | - Zelinda Maria Braga Hirano
- Universidade Regional de Blumenau (FURB), Centro de Pesquisas Biológicas de Indaial (CEPESBI)/ Projeto bugio, Blumenau, Indaial, SC, Brazil
| | - Alcides Pissinatti
- Centro de Primatologia do Rio de Janeiro (CPRJ/Inea), Guapimirim, RJ, 25940-000, Brazil
| | - Maria de Fátima Ferreira-da-Cruz
- Centro de Pesquisa, Diagnóstico e Treinamento em Malária (CPD-Mal), Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil
- Laboratório de Pesquisa em Malária, IOC, Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil
| | - Ricardo Lourenço de Oliveira
- Centro de Pesquisa, Diagnóstico e Treinamento em Malária (CPD-Mal), Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz (IOC), Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil
| | - Stefan T Arold
- Computational Bioscience Research Center, Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Centre de Biologie Structurale, CNRS, INSERM, Université de Montpellier, 34090, Montpellier, France
| | - Daniel C Jeffares
- Department of Biology and York Biomedical Research Institute, University of York, Wentworth Way, York, YO10 5DD, UK
| | - Patrícia Brasil
- Centro de Pesquisa, Diagnóstico e Treinamento em Malária (CPD-Mal), Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil
- Laboratório de Pesquisa Clínica em Doenças Febris Agudas, Instituto Nacional de Infectologia Evandro Chagas, Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil
| | - Cristiana Ferreira Alves de Brito
- Grupo de Pesquisa em Biologia Molecular e Imunologia da Malária, Instituto René Rachou, Fundação Oswaldo Cruz (Fiocruz), Belo Horizonte, MG, 30190-009, Brazil
| | - Richard Culleton
- Division of Molecular Parasitology, Proteo-Science Center, Ehime University, Toon, Ehime, 791-0295, Japan
| | - Cláudio Tadeu Daniel-Ribeiro
- Centro de Pesquisa, Diagnóstico e Treinamento em Malária (CPD-Mal), Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil.
- Laboratório de Pesquisa em Malária, IOC, Fiocruz, Rio de Janeiro, RJ, 21040-360, Brazil.
| | - Arnab Pain
- Pathogen Genomics Laboratory, Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia.
- Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, N20 W10 Kita-ku, Sapporo, Japan.
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32
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Abstract
The histone-like nucleoid structuring (H-NS) protein controls the expression of hundreds of genes in Gram-positive bacteria through its capability to coat and condense DNA. This mechanism requires the formation of superhelical H-NS protein filaments that are sensitive to temperature and salinity, allowing H-NS to act as an environment sensor. We use multiscale modeling and simulations to obtain detailed insights into the mechanism of H-NS filament's sensitivity to environmental changes. Through the simulations of the superhelical H-NS filament, we reveal how different environments induce heterogeneity of H-NS monomers. Further, we observe that transient self-association within the H-NS filament creates temperature-inducible strain and might mildly oppose DNA binding. We also probe different H-NS-DNA complex architectures and show that complexation enhances the stability of both DNA and H-NS superhelices. Overall, our results provide unprecedented molecular insights into the environmental sensing and DNA interactions of a prototypical nucleoid-structuring bacterial protein filament.
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Affiliation(s)
- Xiaochuan Zhao
- Departments of Chemistry and Materials Science, University of Vermont, Burlington VT 05405
| | - Jacob M. Remington
- Departments of Chemistry and Materials Science, University of Vermont, Burlington VT 05405
| | - Severin T. Schneebeli
- Departments of Chemistry and Materials Science, University of Vermont, Burlington VT 05405
| | - Stefan T. Arold
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering (BESE), Thuwal, 23955-6900, Saudi Arabia
- Centre de Biologie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
| | - Jianing Li
- Departments of Chemistry and Materials Science, University of Vermont, Burlington VT 05405
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33
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Sanderson LE, Lanko K, Alsagob M, Almass R, Al-Ahmadi N, Najafi M, Al-Muhaizea MA, Alzaidan H, AlDhalaan H, Perenthaler E, van der Linde HC, Nikoncuk A, Kühn NA, Antony D, Owaidah TM, Raskin S, Vieira LGDR, Mombach R, Ahangari N, Silveira TRD, Ameziane N, Rolfs A, Alharbi A, Sabbagh RM, AlAhmadi K, Alawam B, Ghebeh H, AlHargan A, Albader AA, Binhumaid FS, Goljan E, Monies D, Mustafa OM, Aldosary M, AlBakheet A, Alyounes B, Almutairi F, Al-Odaib A, Aksoy DB, Basak AN, Palvadeau R, Trabzuni D, Rosenfeld JA, Karimiani EG, Meyer BF, Karakas B, Al-Mohanna F, Arold ST, Colak D, Maroofian R, Houlden H, Bertoli-Avella AM, Schmidts M, Barakat TS, van Ham TJ, Kaya N. Bi-allelic variants in HOPS complex subunit VPS41 cause cerebellar ataxia and abnormal membrane trafficking. Brain 2021; 144:769-780. [PMID: 33764426 PMCID: PMC8041041 DOI: 10.1093/brain/awaa459] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 09/17/2020] [Accepted: 10/17/2020] [Indexed: 02/06/2023] Open
Abstract
Membrane trafficking is a complex, essential process in eukaryotic cells responsible for protein transport and processing. Deficiencies in vacuolar protein sorting (VPS) proteins, key regulators of trafficking, cause abnormal intracellular segregation of macromolecules and organelles and are linked to human disease. VPS proteins function as part of complexes such as the homotypic fusion and vacuole protein sorting (HOPS) tethering complex, composed of VPS11, VPS16, VPS18, VPS33A, VPS39 and VPS41. The HOPS-specific subunit VPS41 has been reported to promote viability of dopaminergic neurons in Parkinson’s disease but to date has not been linked to human disease. Here, we describe five unrelated families with nine affected individuals, all carrying homozygous variants in VPS41 that we show impact protein function. All affected individuals presented with a progressive neurodevelopmental disorder consisting of cognitive impairment, cerebellar atrophy/hypoplasia, motor dysfunction with ataxia and dystonia, and nystagmus. Zebrafish disease modelling supports the involvement of VPS41 dysfunction in the disorder, indicating lysosomal dysregulation throughout the brain and providing support for cerebellar and microglial abnormalities when vps41 was mutated. This provides the first example of human disease linked to the HOPS-specific subunit VPS41 and suggests the importance of HOPS complex activity for cerebellar function.
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Affiliation(s)
- Leslie E Sanderson
- Department of Clinical Genetics, Erasmus MC University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Kristina Lanko
- Department of Clinical Genetics, Erasmus MC University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Maysoon Alsagob
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia.,KACST-BWH/Harvard Centre of Excellence for Biomedicine, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology, Riyadh 12354, Saudi Arabia
| | - Rawan Almass
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia.,Department of Medical Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia
| | - Nada Al-Ahmadi
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia.,Department of Biology, Imam Abdulrahman bin Faisal University, Dammam 34212, Kingdom of Saudi Arabia
| | - Maryam Najafi
- Genome Research Division, Human Genetics Department, Radboud University Medical Center, Geert Grooteplein Zuid 10, 6525 GA, Nijmegen, The Netherlands.,Center for Pediatrics and Adolescent Medicine, University Hospital Freiburg, Freiburg University, Faculty of Medicine, Freiburg 79106, Germany
| | | | - Hamad Alzaidan
- Department of Medical Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia
| | - Hesham AlDhalaan
- Department of Neurosciences, KFSHRC, Riyadh, 11211, Kingdom of Saudi Arabia
| | - Elena Perenthaler
- Department of Clinical Genetics, Erasmus MC University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Herma C van der Linde
- Department of Clinical Genetics, Erasmus MC University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Anita Nikoncuk
- Department of Clinical Genetics, Erasmus MC University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Nikolas A Kühn
- Department of Clinical Genetics, Erasmus MC University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Dinu Antony
- Center for Pediatrics and Adolescent Medicine, University Hospital Freiburg, Freiburg University, Faculty of Medicine, Freiburg 79106, Germany
| | - Tarek Mustafa Owaidah
- Department of Pathology and Laboratory Medicine, KFSHRC, Riyadh, 11211, Kingdom of Saudi Arabia
| | - Salmo Raskin
- Positivo University Medical School, Curitiba, Parana, 81280-330, Brazil
| | | | - Romulo Mombach
- Núcleo de Assistência Integral ao Paciente Especial, Prefeitura de Joinvile, Joinvile, Santa Catarina, 89202-450, Brazil
| | - Najmeh Ahangari
- Department of Medical Genetics and Molecular Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, 9177899191, Mashhad, Iran
| | | | | | - Arndt Rolfs
- CENTOGENE GmbH, 18055 Rostock.,Medical University of Rostock, 18051 Rostock
| | - Aljohara Alharbi
- Department of Pathology and Laboratory Medicine, KFSHRC, Riyadh, 11211, Kingdom of Saudi Arabia
| | - Raghda M Sabbagh
- Department of Pathology and Laboratory Medicine, KFSHRC, Riyadh, 11211, Kingdom of Saudi Arabia
| | - Khalid AlAhmadi
- Department of Neurosciences, KFSHRC, Riyadh, 11211, Kingdom of Saudi Arabia
| | - Bashayer Alawam
- Department of Medical Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia
| | - Hazem Ghebeh
- Stem Cell and Tissue Re-engineering Program, KFSHRC, Riyadh, 11211, Kingdom of Saudi Arabia
| | - Aljouhra AlHargan
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia
| | - Anoud A Albader
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia
| | - Faisal S Binhumaid
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia
| | - Ewa Goljan
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia
| | - Dorota Monies
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia
| | - Osama M Mustafa
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia
| | - Mazhor Aldosary
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia
| | - Albandary AlBakheet
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia
| | - Banan Alyounes
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia
| | - Faten Almutairi
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia
| | - Ali Al-Odaib
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia
| | - Durdane Bekar Aksoy
- Gaziosmanpasa University, School of Medicine, Neurology Dept. Tokat, 8FJH+CW Tokat, Merkez/Tokat, Turkey
| | - A Nazli Basak
- Koc University, School of Medicine, Suna and Inan Kirac Foundation, NDAL- KUTTAM, Davutpasa cad. No.4, 34010, Zeytinburnu, İstanbul, Turkey
| | - Robin Palvadeau
- Koc University, School of Medicine, Suna and Inan Kirac Foundation, NDAL- KUTTAM, Davutpasa cad. No.4, 34010, Zeytinburnu, İstanbul, Turkey
| | - Daniah Trabzuni
- Department of Molecular Neuroscience, University College London Institute of Neurology, London WC1N 3BG, UK
| | - Jill A Rosenfeld
- Department of Molecular and Human Genetics, Baylor College of Medicine, and Baylor Genetics Laboratories, Houston, TX, USA
| | - Ehsan Ghayoor Karimiani
- Molecular and Clinical Sciences Institute, St. George's, University of London, Cranmer Terrace, London SW17 0RE, UK.,Innovative Medical Research Center, Mashhad Branch, Islamic Azad University, 9G58 + 69 Mashhad, Razavi Khorasan Province, Iran
| | - Brian F Meyer
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia.,Saudi Human Genome Program, King Abdulaziz City for Science and Technology, Riyadh, Kingdom of Saudi Arabia.,Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, 11211, Riyadh, Kingdom of Saudi Arabia
| | - Bedri Karakas
- Department of Molecular Oncology, KFSHRC, Riyadh, 11211, Kingdom of Saudi Arabia
| | - Futwan Al-Mohanna
- Department of Cell Biology, KFSHRC, Riyadh, 11211, Kingdom of Saudi Arabia
| | - Stefan T Arold
- Division of Biological and Environmental Sciences and Engineering (BESE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia.,Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
| | - Dilek Colak
- Department of Biostatistics, Epidemiology and Scientific Computing, KFSHRC, Riyadh, 11211, Kingdom of Saudi Arabia
| | - Reza Maroofian
- Department of Neuromuscular Disorders, UCL Queen Square Institute of Neurology, London, WC1N 3BG, UK
| | - Henry Houlden
- Department of Neuromuscular Disorders, UCL Queen Square Institute of Neurology, London, WC1N 3BG, UK
| | | | - Miriam Schmidts
- Genome Research Division, Human Genetics Department, Radboud University Medical Center, Geert Grooteplein Zuid 10, 6525 GA, Nijmegen, The Netherlands.,Center for Pediatrics and Adolescent Medicine, University Hospital Freiburg, Freiburg University, Faculty of Medicine, Freiburg 79106, Germany
| | - Tahsin Stefan Barakat
- Department of Clinical Genetics, Erasmus MC University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Tjakko J van Ham
- Department of Clinical Genetics, Erasmus MC University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Namik Kaya
- Department of Genetics, King Faisal Specialist Hospital and Research Centre (KFSHRC), Riyadh, 11211, Kingdom of Saudi Arabia.,Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, 11211, Riyadh, Kingdom of Saudi Arabia
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34
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Abouelhoda M, Mohty D, Alayary I, Meyer BF, Arold ST, Fadel BM, Monies D. Established and candidate transthyretin amyloidosis variants identified in the Saudi population by data mining. Hum Genomics 2021; 15:52. [PMID: 34380564 PMCID: PMC8359098 DOI: 10.1186/s40246-021-00351-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 06/08/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Familial transthyretin (TTR) amyloidosis (ATTR) is an autosomal dominant disease with significant phenotypic heterogeneity. Its prevalence in Saudi Arabia has not previously been investigated. An existing exome variant database of Saudi individuals, sequenced to globally investigate rare diseases in the population, was mined for TTR variants and filtered for missense mutations resulting in single amino acid changes. A total of 13,906 Saudi exomes from unrelated individuals were analyzed blindly. RESULTS Three TTR variants known to be associated with ATTR amyloidosis were identified. Additionally, three novel TTR mutations were identified. Structural analysis of the three novel variants suggests that at least two could be amyloidogenic. The most common variant associated with amyloidosis was p.Val142Ile (allele frequency 0.001). Further investigation of these variants and their translation to clinical practice may help to diagnose, monitor, and manage patients with ATTR amyloidosis. CONCLUSION Multiple TTR variants potentially associated with systemic ATTR amyloidosis were identified in the Saudi population. Early diagnosis and intervention, facilitated by familial genetic testing of patients with ATTR amyloidosis, may benefit in the management of this disease. Early diagnosis could be enhanced through inclusion of ATTR variants in existing population-based screening programs.
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Affiliation(s)
- Mohamed Abouelhoda
- Department of Genetics, King Faisal Specialist Hospital and Research Centre, P.O. Box 3354, Riyadh, 11211, Saudi Arabia
| | - Dania Mohty
- Heart Center, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
- Al-Faisal University, College of Medicine, Affiliate Harvard Medical School International, Riyadh, Saudi Arabia
| | | | - Brian F Meyer
- Department of Genetics, King Faisal Specialist Hospital and Research Centre, P.O. Box 3354, Riyadh, 11211, Saudi Arabia
| | - Stefan T Arold
- Computational Bioscience Research Center, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Bahaa M Fadel
- Heart Center, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
- Al-Faisal University, College of Medicine, Affiliate Harvard Medical School International, Riyadh, Saudi Arabia
| | - Dorota Monies
- Department of Genetics, King Faisal Specialist Hospital and Research Centre, P.O. Box 3354, Riyadh, 11211, Saudi Arabia.
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35
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Zhang J, Vancea AI, Shahul Hameed UF, Arold ST. Versatile control of the CDC48 segregase by the plant UBX-containing (PUX) proteins. Comput Struct Biotechnol J 2021; 19:3125-3132. [PMID: 34141135 PMCID: PMC8181520 DOI: 10.1016/j.csbj.2021.05.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 11/26/2022] Open
Abstract
In plants, AAA-adenosine triphosphatase (ATPase) Cell Division Control Protein 48 (CDC48) uses the force generated through ATP hydrolysis to pull, extract, and unfold ubiquitylated or sumoylated proteins from the membrane, chromatin, or protein complexes. The resulting changes in protein or RNA content are an important means for plants to control protein homeostasis and thereby adapt to shifting environmental conditions. The activity and targeting of CDC48 are controlled by adaptor proteins, of which the plant ubiquitin regulatory X (UBX) domain-containing (PUX) proteins constitute the largest family. Emerging knowledge on the structure and function of PUX proteins highlights that these proteins are versatile factors for plant homeostasis and adaptation that might inspire biotechnological applications.
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Affiliation(s)
- Junrui Zhang
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Alexandra I Vancea
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Umar F Shahul Hameed
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Stefan T Arold
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia.,Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
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36
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Alghamdi M, Alhumsi TR, Altweijri I, Alkhamis WH, Barasain O, Cardona-Londoño KJ, Ramakrishnan R, Guzmán-Vega FJ, Arold ST, Ali G, Adly N, Ali H, Basudan A, Bakhrebah MA. Clinical and Genetic Characterization of Craniosynostosis in Saudi Arabia. Front Pediatr 2021; 9:582816. [PMID: 33937142 PMCID: PMC8085561 DOI: 10.3389/fped.2021.582816] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 03/03/2021] [Indexed: 11/20/2022] Open
Abstract
Background: Craniosynostosis (CS) is defined as pre-mature fusion of one or more of the cranial sutures. CS is classified surgically as either simple or complex based on the number of cranial sutures involved. CS can also be classified genetically as isolated CS or syndromic CS if the patient has extracranial deformities. Currently, the link between clinical and genetic patterns of CS in the Saudi population is poorly understood. Methodology: We conducted a retrospective cohort study among 28 CS patients, of which 24 were operated and four were not. Clinical and genetic data were collected between February 2015 and February 2019, from consenting patient's families. The electronic chart data were collected and analyzed including patient demographics, craniofacial features, other anomalies and dysmorphic features, operative data, intra cranial pressure (ICP), parent consanguinity and genetic testing results. Results: The most common deformity in our population was trigonocephaly. The most performed procedure was cranial vault reconstruction with fronto-orbital advancement, followed by posterior vault distraction osteogenesis and suturectomy with barrel staving. Genetics analysis revealed pathogenic mutations in FGFR2 (6 cases), TWIST1 (3 cases), ALPL (2 cases), and TCF12 (2 cases), and FREM1 (2 case). Conclusion: Compared to Western countries, our Saudi cohort displays significant differences in the prevalence of CS features, such as the types of sutures and prevalence of inherited CS. The genomic background allows our phenotype-genotype study to reclassify variants of unknown significance. Worldwide, the sagittal suture is the most commonly affected suture in simple CS, but in the Saudi population, the metopic suture fusion was most commonly seen in our clinic. Further studies are needed to investigate the characteristics of CS in our population in a multicenter setting.
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Affiliation(s)
- Malak Alghamdi
- Medical Genetic Division, Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
- Department of Pediatrics, King Saud University Medical City, Riyadh, Saudi Arabia
| | - Taghreed R. Alhumsi
- Department of Plastic Surgery, King Saud University Medical City, Riyadh, Saudi Arabia
| | - Ikhlass Altweijri
- Department of Neurosurgery, King Saud University Medical City, Riyadh, Saudi Arabia
| | - Waleed H. Alkhamis
- Obstetrics and Gynecology, King Saud University Medical City, Riyadh, Saudi Arabia
| | - Omar Barasain
- College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Kelly J. Cardona-Londoño
- Biological and Environmental Science and Engineering (BESE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Reshmi Ramakrishnan
- Biological and Environmental Science and Engineering (BESE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Francisco J. Guzmán-Vega
- Biological and Environmental Science and Engineering (BESE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Stefan T. Arold
- Biological and Environmental Science and Engineering (BESE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Center de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Ghaida Ali
- College of Medicine, Imam Muhammad Ibn Saud University, Riyadh, Saudi Arabia
| | - Nouran Adly
- College of Medicine Research Centre, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Hebatallah Ali
- College of Medicine Research Centre, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Ahmed Basudan
- Chair of Medical and Molecular Genetics, Department of Clinical Laboratory Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Muhammed A. Bakhrebah
- Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
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37
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Naveed H, Reglin C, Schubert T, Gao X, Arold ST, Maitland ML. Identifying Novel Drug Targets by iDTPnd: A Case Study of Kinase Inhibitors. Genomics Proteomics Bioinformatics 2021; 19:986-997. [PMID: 33794377 PMCID: PMC9403029 DOI: 10.1016/j.gpb.2020.05.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 01/08/2020] [Accepted: 05/11/2020] [Indexed: 11/16/2022]
Abstract
Current FDA-approved kinase inhibitors cause diverse adverse effects, some of which are due to the mechanism-independent effects of these drugs. Identifying these mechanism-independent interactions could improve drug safety and support drug repurposing. Here, we develop iDTPnd (integrated Drug Target Predictor with negative dataset), a computational approach for large-scale discovery of novel targets for known drugs. For a given drug, we construct a positive structural signature as well as a negative structural signature that captures the weakly conserved structural features of drug-binding sites. To facilitate assessment of unintended targets, iDTPnd also provides a docking-based interaction score and its statistical significance. We confirm the interactions of sorafenib, imatinib, dasatinib, sunitinib, and pazopanib with their known targets at a sensitivity of 52% and a specificity of 55%. We also validate 10 predicted novel targets by using in vitro experiments. Our results suggest that proteins other than kinases, such as nuclear receptors, cytochrome P450, and MHC class I molecules, can also be physiologically relevant targets of kinase inhibitors. Our method is general and broadly applicable for the identification of protein–small molecule interactions, when sufficient drug–target 3D data are available. The code for constructing the structural signatures is available at https://sfb.kaust.edu.sa/Documents/iDTP.zip.
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Affiliation(s)
- Hammad Naveed
- Toyota Technological Institute at Chicago, Chicago, IL 60637, USA; Department of Computer Science, National University of Computer and Emerging Sciences, Islamabad 44000, Pakistan.
| | | | | | - Xin Gao
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division, Thuwal 23955, Saudi Arabia
| | - Stefan T Arold
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Biological and Environmental Sciences and Engineering (BESE) Division, Thuwal 23955, Saudi Arabia
| | - Michael L Maitland
- Inova Center for Personalized Health and Schar Cancer Institute, Falls Church, VA 22042 USA,; University of Virginia Cancer Center, Annandale, Virginia 22003, USA
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38
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Alsaif HS, Alshehri A, Sulaiman RA, Al-Hindi H, Guzmán-Vega FJ, Arold ST, Alkuraya FS. MYH1 is a candidate gene for recurrent rhabdomyolysis in humans. Am J Med Genet A 2021; 185:2131-2135. [PMID: 33755318 DOI: 10.1002/ajmg.a.62188] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/01/2021] [Accepted: 03/05/2021] [Indexed: 01/04/2023]
Abstract
Rhabdomyolysis is a serious medical condition characterized by muscle injury, and there are recognized genetic causes especially in recurrent forms. The majority of these cases, however, remain unexplained. Here, we describe a patient with recurrent rhabdomyolysis in whom extensive clinical testing failed to identify a likely etiology. Whole-exome sequencing revealed a novel missense variant in MYH1, which encodes a major adult muscle fiber protein. Structural biology analysis revealed that the mutated residue is extremely well conserved and is located in the actin binding cleft. Furthermore, immediately adjacent mutations in that cleft in other myosins are pathogenic in humans. Our results are consistent with the finding that MYH1 is mutated in rhabdomyolysis in horses and suggest that this gene should be investigated in cases with recurrent rhabdomyolysis.
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Affiliation(s)
- Hessa S Alsaif
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Ali Alshehri
- Department of Neuroscience, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Raashda A Sulaiman
- Department of Medical Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Hindi Al-Hindi
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Francisco J Guzmán-Vega
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Thuwal, Saudi Arabia
| | - Stefan T Arold
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Thuwal, Saudi Arabia.,Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Fowzan S Alkuraya
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.,Department of Anatomy and Cell Biology, College of Medicine, Riyadh, Saudi Arabia
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39
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Salamina M, Montefiore BC, Liu M, Wood DJ, Heath R, Ault JR, Wang LZ, Korolchuk S, Baslé A, Pastok MW, Reeks J, Tatum NJ, Sobott F, Arold ST, Pagano M, Noble ME, Endicott JA. Discriminative SKP2 Interactions with CDK-Cyclin Complexes Support a Cyclin A-Specific Role in p27KIP1 Degradation. J Mol Biol 2021; 433:166795. [PMID: 33422522 PMCID: PMC7895821 DOI: 10.1016/j.jmb.2020.166795] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/11/2020] [Accepted: 12/28/2020] [Indexed: 12/29/2022]
Abstract
The SCFSKP2 ubiquitin ligase relieves G1 checkpoint control of CDK-cyclin complexes by promoting p27KIP1 degradation. We describe reconstitution of stable complexes containing SKP1-SKP2 and CDK1-cyclin B or CDK2-cyclin A/E, mediated by the CDK regulatory subunit CKS1. We further show that a direct interaction between a SKP2 N-terminal motif and cyclin A can stabilize SKP1-SKP2-CDK2-cyclin A complexes in the absence of CKS1. We identify the SKP2 binding site on cyclin A and demonstrate the site is not present in cyclin B or cyclin E. This site is distinct from but overlapping with features that mediate binding of p27KIP1 and other G1 cyclin regulators to cyclin A. We propose that the capacity of SKP2 to engage with CDK2-cyclin A by more than one structural mechanism provides a way to fine tune the degradation of p27KIP1 and distinguishes cyclin A from other G1 cyclins to ensure orderly cell cycle progression.
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Affiliation(s)
- Marco Salamina
- Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Paul O’Gorman Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Bailey C. Montefiore
- Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Paul O’Gorman Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Mengxi Liu
- Department of Biochemistry and Molecular Pharmacology, Perlmutter NYU Cancer Center, New York University Grossman School of Medicine, and Howard Hughes Medical Institute, The Alexandria Center of Life Science, East Tower, 450 E, 29th Street, New York, NY 10016, USA
| | - Daniel J. Wood
- Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Paul O’Gorman Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Richard Heath
- Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Paul O’Gorman Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - James R. Ault
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Lan-Zhen Wang
- Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Paul O’Gorman Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Svitlana Korolchuk
- Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Paul O’Gorman Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Arnaud Baslé
- Biosciences Institute, Newcastle University, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Martyna W. Pastok
- Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Paul O’Gorman Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Judith Reeks
- Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Paul O’Gorman Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Natalie J. Tatum
- Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Paul O’Gorman Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Frank Sobott
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Stefan T. Arold
- Division of Biological and Environmental Sciences and Engineering (BESE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
| | - Michele Pagano
- Department of Biochemistry and Molecular Pharmacology, Perlmutter NYU Cancer Center, New York University Grossman School of Medicine, and Howard Hughes Medical Institute, The Alexandria Center of Life Science, East Tower, 450 E, 29th Street, New York, NY 10016, USA
| | - Martin E.M. Noble
- Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Paul O’Gorman Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Jane A. Endicott
- Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Paul O’Gorman Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
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40
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Zohra Smaili F, Tian S, Roy A, Alazmi M, Arold ST, Mukherjee S, Scott Hefty P, Chen W, Gao X. QAUST: Protein Function Prediction Using Structure Similarity, Protein Interaction, and Functional Motifs. Genomics Proteomics Bioinformatics 2021; 19:998-1011. [PMID: 33631427 PMCID: PMC9403031 DOI: 10.1016/j.gpb.2021.02.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 04/03/2019] [Accepted: 05/17/2019] [Indexed: 11/25/2022]
Abstract
The number of available protein sequences in public databases is increasing exponentially. However, a significant percentage of these sequences lack functional annotation, which is essential for the understanding of how biological systems operate. Here, we propose a novel method, Quantitative Annotation of Unknown STructure (QAUST), to infer protein functions, specifically Gene Ontology (GO) terms and Enzyme Commission (EC) numbers. QAUST uses three sources of information: structure information encoded by global and local structure similarity search, biological network information inferred by protein–protein interaction data, and sequence information extracted from functionally discriminative sequence motifs. These three pieces of information are combined by consensus averaging to make the final prediction. Our approach has been tested on 500 protein targets from the Critical Assessment of Functional Annotation (CAFA) benchmark set. The results show that our method provides accurate functional annotation and outperforms other prediction methods based on sequence similarity search or threading. We further demonstrate that a previously unknown function of human tripartite motif-containing 22 (TRIM22) protein predicted by QAUST can be experimentally validated.
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Affiliation(s)
- Fatima Zohra Smaili
- Computational Bioscience Research Center (CBRC), Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
| | - Shuye Tian
- Department of Biology, Southern University of Science and Technology of China (SUSTC), Shenzhen 518055, China
| | - Ambrish Roy
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Meshari Alazmi
- Computational Bioscience Research Center (CBRC), Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia; College of Computer Science and Engineering, University of Hail, Hail 55476, Saudi Arabia
| | - Stefan T Arold
- Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
| | - Srayanta Mukherjee
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA
| | - P Scott Hefty
- Department of Molecular Bioscience, University of Kansas, Lawrence, KS 66047, USA
| | - Wei Chen
- Department of Biology, Southern University of Science and Technology of China (SUSTC), Shenzhen 518055, China.
| | - Xin Gao
- Computational Bioscience Research Center (CBRC), Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia.
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41
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Hala S, Antony CP, Momin AA, Alshehri M, Ben-Rached F, Al-Ahmadi G, Zakri S, Baadhaim M, Alsaedi A, Thaqafi OAA, Arold ST, Al-Amri A, Pain A. Co-occurrence of mcr-1 and mcr-8 genes in multi-drug-resistant Klebsiella pneumoniae from a 2015 clinical isolate. Int J Antimicrob Agents 2021; 57:106303. [PMID: 33592301 DOI: 10.1016/j.ijantimicag.2021.106303] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 01/30/2021] [Accepted: 02/06/2021] [Indexed: 11/17/2022]
Affiliation(s)
- S Hala
- Pathogen Genomics Laboratory, Division of Biological and Environmental Sciences and Engineering, Thuwal, Makkah, Saudi Arabia; King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Makkah, Saudi Arabia; King Abdullah International Medical Research Centre, Jeddah, Makkah, Saudi Arabia; Ministry of National Guard Health Affairs, Jeddah Makkah, Saudi Arabia
| | - C P Antony
- Pathogen Genomics Laboratory, Division of Biological and Environmental Sciences and Engineering, Thuwal, Makkah, Saudi Arabia; Red Sea Research Centre, Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Saudi Arabia
| | - A A Momin
- Computational Bioscience Research Centre, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Makkah, Saudi Arabia
| | - M Alshehri
- King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Makkah, Saudi Arabia; King Abdullah International Medical Research Centre, Jeddah, Makkah, Saudi Arabia; Ministry of National Guard Health Affairs, Jeddah Makkah, Saudi Arabia
| | - F Ben-Rached
- Pathogen Genomics Laboratory, Division of Biological and Environmental Sciences and Engineering, Thuwal, Makkah, Saudi Arabia
| | - G Al-Ahmadi
- Ministry of National Guard Health Affairs, Jeddah Makkah, Saudi Arabia
| | - S Zakri
- King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Makkah, Saudi Arabia; King Abdullah International Medical Research Centre, Jeddah, Makkah, Saudi Arabia; Ministry of National Guard Health Affairs, Jeddah Makkah, Saudi Arabia
| | - M Baadhaim
- King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Makkah, Saudi Arabia; King Abdullah International Medical Research Centre, Jeddah, Makkah, Saudi Arabia; Ministry of National Guard Health Affairs, Jeddah Makkah, Saudi Arabia
| | - A Alsaedi
- King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Makkah, Saudi Arabia; King Abdullah International Medical Research Centre, Jeddah, Makkah, Saudi Arabia; Ministry of National Guard Health Affairs, Jeddah Makkah, Saudi Arabia
| | - O A Al Thaqafi
- King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Makkah, Saudi Arabia
| | - S T Arold
- Computational Bioscience Research Centre, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Makkah, Saudi Arabia
| | - A Al-Amri
- King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Makkah, Saudi Arabia; King Abdullah International Medical Research Centre, Jeddah, Makkah, Saudi Arabia; Ministry of National Guard Health Affairs, Jeddah Makkah, Saudi Arabia
| | - A Pain
- Pathogen Genomics Laboratory, Division of Biological and Environmental Sciences and Engineering, Thuwal, Makkah, Saudi Arabia; Global Institution for Collaborative Research and Education, Hokkaido University, Kita-ku, Sapporo, Japan.
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42
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Alghamdi MA, Mulla J, Saheb Sharif-Askari N, Guzmán-Vega FJ, Arold ST, Abd-Alwahed M, Alharbi N, Kashour T, Halwani R. A Novel Biallelic STING1 Gene Variant Causing SAVI in Two Siblings. Front Immunol 2021; 11:599564. [PMID: 33488593 PMCID: PMC7820697 DOI: 10.3389/fimmu.2020.599564] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 12/02/2020] [Indexed: 12/24/2022] Open
Abstract
STING-associated vasculopathy of infantile-onset (SAVI) is one of the newly identified types of interferonopathies. SAVI is caused by heterozygous gain-of-function mutations in the STING1. We herein report for the first time a homozygous variant in the STING1 gene in two siblings that resulted in constitutive activation of STING gene and the SAVI phenotype. Exome sequencing revealed a novel homozygous NM_198282.3: c.841C>T; p.(Arg281Trp) variant in exon 7 of the STING1 gene. The variant segregated in the family to be homozygous in all affected and either heterozygous or wild type in all healthy. Computational structural analysis of the mutants revealed changes in the STING protein structure/function. Elevated serum beta-interferon levels were observed in the patients compared to the control family members. Treatment with Janus kinase inhibitor (JAK-I) Ruxolitinib suppressed the inflammatory process, decreased beta-interferon levels, and stopped the progression of the disease.
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Affiliation(s)
- Malak Ali Alghamdi
- Department of Pediatrics, Medical Genetic Division, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Jaazeel Mulla
- Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Narjes Saheb Sharif-Askari
- Sharjah Institute of Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Francisco J Guzmán-Vega
- Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Stefan T Arold
- Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Mervat Abd-Alwahed
- College of Medicine Research Center, King Saud University, Riyadh, Saudi Arabia
| | - Nasser Alharbi
- Department of Pediatrics, Pulmonology Division, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Tarek Kashour
- Cardiology Department, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Rabih Halwani
- Department of Clinical Sciences, Sharjah Institute for Medical Research (SIMR), College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
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43
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Zhao X, Shahul Hameed UF, Kharchenko V, Liao C, Huser F, Remington JM, Radhakrishnan AK, Jaremko M, Jaremko Ł, Arold ST, Li J. Molecular basis for the adaptive evolution of environment-sensing by H-NS proteins. eLife 2021; 10:57467. [PMID: 33410747 PMCID: PMC7817174 DOI: 10.7554/elife.57467] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 01/06/2021] [Indexed: 12/02/2022] Open
Abstract
The DNA-binding protein H-NS is a pleiotropic gene regulator in gram-negative bacteria. Through its capacity to sense temperature and other environmental factors, H-NS allows pathogens like Salmonella to adapt their gene expression to their presence inside or outside warm-blooded hosts. To investigate how this sensing mechanism may have evolved to fit different bacterial lifestyles, we compared H-NS orthologs from bacteria that infect humans, plants, and insects, and from bacteria that live on a deep-sea hypothermal vent. The combination of biophysical characterization, high-resolution proton-less nuclear magnetic resonance spectroscopy, and molecular simulations revealed, at an atomistic level, how the same general mechanism was adapted to specific habitats and lifestyles. In particular, we demonstrate how environment-sensing characteristics arise from specifically positioned intra- or intermolecular electrostatic interactions. Our integrative approach clarified the exact modus operandi for H-NS-mediated environmental sensing and suggested that this sensing mechanism resulted from the exaptation of an ancestral protein feature.
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Affiliation(s)
- Xiaochuan Zhao
- Department of Chemistry, The University of Vermont, Burlington, United States
| | - Umar F Shahul Hameed
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering (BESE), Thuwal, Saudi Arabia
| | - Vladlena Kharchenko
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering (BESE), Thuwal, Saudi Arabia
| | - Chenyi Liao
- Department of Chemistry, The University of Vermont, Burlington, United States
| | - Franceline Huser
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering (BESE), Thuwal, Saudi Arabia
| | - Jacob M Remington
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering (BESE), Thuwal, Saudi Arabia
| | - Anand K Radhakrishnan
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering (BESE), Thuwal, Saudi Arabia
| | - Mariusz Jaremko
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering (BESE), Thuwal, Saudi Arabia
| | - Łukasz Jaremko
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering (BESE), Thuwal, Saudi Arabia
| | - Stefan T Arold
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering (BESE), Thuwal, Saudi Arabia.,Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Jianing Li
- Department of Chemistry, The University of Vermont, Burlington, United States
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44
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Alghamdi MA, Alkhamis WH, Jamjoom DZ, Al Khalifah R, Alshammari NR, Alsumaili K, Arold ST. Succinic semialdehyde dehydrogenase deficiency presenting with central hypothyroidism. Clin Case Rep 2021; 9:229-235. [PMID: 33489165 PMCID: PMC7813088 DOI: 10.1002/ccr3.3504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 09/28/2020] [Accepted: 10/03/2020] [Indexed: 11/17/2022] Open
Abstract
Central hypothyroidism might be another clinical sign of SSADH deficiency which prompts urinary organic acid screening for GHB in central hypothyroidism patients. Studies on GABA and thyroid hormone interaction might be a concept of a new therapy.
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Affiliation(s)
- Malak Ali Alghamdi
- Medical Genetics DivisionDepartment of PediatricsCollege of MedicineKing Saud UniversityRiyadhSaudi Arabia
- Medical Genetics DivisionDepartment of PediatricsKing Saud University Medical cityRiyadhSaudi Arabia
| | - Waleed H. Alkhamis
- Department of Obstetrics and GynecologyKing Saud University Medical CityRiyadhSaudi Arabia
| | - Dima Z. Jamjoom
- Department of Radiology and Medical ImagingCollege of MedicineKing Saud UniversityRiyadhSaudi Arabia
| | - Reem Al Khalifah
- Pediatric Endocrinology DivisionDepartment of PediatricsCollege of MedicineKing Saud UniversityRiyadhSaudi Arabia
| | | | - Khalid Alsumaili
- Biochemical Genetic DivisionDepartment of PathologyCollege of MedicineKing Saud UniversityRiyadhSaudi Arabia
| | - Stefan T. Arold
- Division of Biological and Environmental Sciences and Engineering (BESE)King Abdullah University of Science and Technology (KAUST)Computational Bioscience Research Center (CBRC)ThuwalSaudi Arabia
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45
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Guan Q, Sadykov M, Mfarrej S, Hala S, Naeem R, Nugmanova R, Al-Omari A, Salih S, Al Mutair A, Carr MJ, Hall WW, Arold ST, Pain A. A genetic barcode of SARS-CoV-2 for monitoring global distribution of different clades during the COVID-19 pandemic. Int J Infect Dis 2020; 100:216-223. [PMID: 32841689 PMCID: PMC7443060 DOI: 10.1016/j.ijid.2020.08.052] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/15/2020] [Accepted: 08/18/2020] [Indexed: 01/20/2023] Open
Abstract
OBJECTIVE The SARS-CoV-2 pathogen has established endemicity in humans. This necessitates the development of rapid genetic surveillance methodologies to serve as an adjunct with existing comprehensive, albeit though slower, genome sequencing-driven approaches. METHODS A total of 21,789 complete genomes were downloaded from GISAID on May 28, 2020 for analyses. We have defined the major clades and subclades of circulating SARS-CoV-2 genomes. A rapid sequencing-based genotyping protocol was developed and tested on SARS-CoV-2-positive RNA samples by next-generation sequencing. RESULTS We describe 11 major mutations which defined five major clades (G614, S84, V251, I378 and D392) of globally circulating viral populations. The clades can specifically identify using an 11-nucleotide genetic barcode. An analysis of amino acid variation in SARS-CoV-2 proteins provided evidence of substitution events in the viral proteins involved in both host entry and genome replication. CONCLUSION Globally circulating SARS-CoV-2 genomes could be classified into 5 major clades based on mutational profiles defined by an 11-nucleotide barcode. We have successfully developed a multiplexed sequencing-based, rapid genotyping protocol for high-throughput classification of major clade types of SARS-CoV-2 in clinical samples. This barcoding strategy will be required to monitor decreases in genetic diversity as treatment and vaccine approaches become widely available.
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Affiliation(s)
- Qingtian Guan
- King Abdullah University of Science and Technology (KAUST), Pathogen Genomics Laboratory, Biological and Environmental Science and Engineering (BESE), Thuwal-Jeddah, 23955-6900, Saudi Arabia
| | - Mukhtar Sadykov
- King Abdullah University of Science and Technology (KAUST), Pathogen Genomics Laboratory, Biological and Environmental Science and Engineering (BESE), Thuwal-Jeddah, 23955-6900, Saudi Arabia
| | - Sara Mfarrej
- King Abdullah University of Science and Technology (KAUST), Pathogen Genomics Laboratory, Biological and Environmental Science and Engineering (BESE), Thuwal-Jeddah, 23955-6900, Saudi Arabia
| | - Sharif Hala
- King Abdullah University of Science and Technology (KAUST), Pathogen Genomics Laboratory, Biological and Environmental Science and Engineering (BESE), Thuwal-Jeddah, 23955-6900, Saudi Arabia; Clinical Microbiology Department, King Abdullah International Medical Research Centre, Ministry of National Guard Health Affairs, Jeddah, Saudi Arabia; King Saud bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia
| | - Raeece Naeem
- King Abdullah University of Science and Technology (KAUST), Pathogen Genomics Laboratory, Biological and Environmental Science and Engineering (BESE), Thuwal-Jeddah, 23955-6900, Saudi Arabia
| | - Raushan Nugmanova
- King Abdullah University of Science and Technology (KAUST), Pathogen Genomics Laboratory, Biological and Environmental Science and Engineering (BESE), Thuwal-Jeddah, 23955-6900, Saudi Arabia
| | - Awad Al-Omari
- School of Medicine, Alfaisal University, Riyadh, Saudi Arabia; Dr.Suliman Al-Habib Medical Group, Riyadh, Saudi Arabia
| | - Samer Salih
- Dr.Suliman Al-Habib Medical Group, Riyadh, Saudi Arabia
| | | | - Michael J Carr
- National Virus Reference Laboratory (NVRL), School of Medicine, University College Dublin, Belfield, D04 V1W8, Dublin, Ireland; Research Center for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, N20 W10 Kita-ku, Sapporo, 001-0020 Japan
| | - William W Hall
- National Virus Reference Laboratory (NVRL), School of Medicine, University College Dublin, Belfield, D04 V1W8, Dublin, Ireland; Research Center for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, N20 W10 Kita-ku, Sapporo, 001-0020 Japan; Global Virus Network (GVN), 801 W. Baltimore St., Baltimore, MD, 21201, USA
| | - Stefan T Arold
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Biological and Environmental Science and Engineering (BESE), Thuwal-Jeddah, 23955-6900, Saudi Arabia; Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
| | - Arnab Pain
- King Abdullah University of Science and Technology (KAUST), Pathogen Genomics Laboratory, Biological and Environmental Science and Engineering (BESE), Thuwal-Jeddah, 23955-6900, Saudi Arabia; Research Center for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, N20 W10 Kita-ku, Sapporo, 001-0020 Japan; Nuffield Division of Clinical Laboratory Sciences (NDCLS), The John Radcliffe Hospital, University of Oxford, Headington, Oxford, OX3 9DU, United Kingdom.
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46
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Karan R, Mathew S, Muhammad R, Bautista DB, Vogler M, Eppinger J, Oliva R, Cavallo L, Arold ST, Rueping M. Understanding High-Salt and Cold Adaptation of a Polyextremophilic Enzyme. Microorganisms 2020; 8:microorganisms8101594. [PMID: 33081237 PMCID: PMC7602713 DOI: 10.3390/microorganisms8101594] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 09/30/2020] [Accepted: 10/01/2020] [Indexed: 12/27/2022] Open
Abstract
The haloarchaeon Halorubrum lacusprofundi is among the few polyextremophilic organisms capable of surviving in one of the most extreme aquatic environments on Earth, the Deep Lake of Antarctica (−18 °C to +11.5 °C and 21–28%, w/v salt content). Hence, H. lacusprofundi has been proposed as a model for biotechnology and astrobiology to investigate potential life beyond Earth. To understand the mechanisms that allow proteins to adapt to both salinity and cold, we structurally (including X-ray crystallography and molecular dynamics simulations) and functionally characterized the β-galactosidase from H. lacusprofundi (hla_bga). Recombinant hla_bga (produced in Haloferax volcanii) revealed exceptional stability, tolerating up to 4 M NaCl and up to 20% (v/v) of organic solvents. Despite being cold-adapted, hla_bga was also stable up to 60 °C. Structural analysis showed that hla_bga combined increased surface acidity (associated with halophily) with increased structural flexibility, fine-tuned on a residue level, for sustaining activity at low temperatures. The resulting blend enhanced structural flexibility at low temperatures but also limited protein movements at higher temperatures relative to mesophilic homologs. Collectively, these observations help in understanding the molecular basis of a dual psychrophilic and halophilic adaptation and suggest that such enzymes may be intrinsically stable and functional over an exceptionally large temperature range.
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Affiliation(s)
- Ram Karan
- KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; (S.M.); (D.B.B.); (M.V.); (J.E.); (R.O.); (L.C.)
- Correspondence: (R.K.); (S.T.A.); (M.R.)
| | - Sam Mathew
- KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; (S.M.); (D.B.B.); (M.V.); (J.E.); (R.O.); (L.C.)
| | - Reyhan Muhammad
- Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia;
| | - Didier B. Bautista
- KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; (S.M.); (D.B.B.); (M.V.); (J.E.); (R.O.); (L.C.)
| | - Malvina Vogler
- KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; (S.M.); (D.B.B.); (M.V.); (J.E.); (R.O.); (L.C.)
| | - Jorg Eppinger
- KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; (S.M.); (D.B.B.); (M.V.); (J.E.); (R.O.); (L.C.)
| | - Romina Oliva
- KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; (S.M.); (D.B.B.); (M.V.); (J.E.); (R.O.); (L.C.)
- Department of Sciences and Technologies, University Parthenope of Naples, Centro Direzionale Isola C4, I-80143 Naples, Italy
| | - Luigi Cavallo
- KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; (S.M.); (D.B.B.); (M.V.); (J.E.); (R.O.); (L.C.)
| | - Stefan T. Arold
- Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia;
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
- Correspondence: (R.K.); (S.T.A.); (M.R.)
| | - Magnus Rueping
- KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; (S.M.); (D.B.B.); (M.V.); (J.E.); (R.O.); (L.C.)
- Correspondence: (R.K.); (S.T.A.); (M.R.)
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47
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Alghamdi M, Bashiri FA, Abdelhakim M, Adly N, Jamjoom DZ, Sumaily KM, Alghanem B, Arold ST. Phenotypic and molecular spectrum of pyridoxamine-5'-phosphate oxidase deficiency: A scoping review of 87 cases of pyridoxamine-5'-phosphate oxidase deficiency. Clin Genet 2020; 99:99-110. [PMID: 32888189 PMCID: PMC7820968 DOI: 10.1111/cge.13843] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/30/2020] [Accepted: 08/31/2020] [Indexed: 12/29/2022]
Abstract
Pyridoxamine-5'-phosphate oxidase (PNPO) deficiency is an autosomal recessive pyridoxal 5'-phosphate (PLP)-vitamin-responsive epileptic encephalopathy. The emerging feature of PNPO deficiency is the occurrence of refractory seizures in the first year of life. Pre-maturity and fetal distress, combined with neonatal seizures, are other associated key characteristics. The phenotype results from a dependency of PLP which regulates several enzymes in the body. We present the phenotypic and genotypic spectrum of (PNPO) deficiency based on a literature review (2002-2020) of reports (n = 33) of patients with confirmed PNPO deficiency (n = 87). All patients who received PLP (n = 36) showed a clinical response, with a complete dramatic PLP response with seizure cessation observed in 61% of patients. In spite of effective seizure control with PLP, approximately 56% of patients affected with PLP-dependent epilepsy suffer developmental delay/intellectual disability. There is no diagnostic biomarker, and molecular testing required for diagnosis. However, we noted that cerebrospinal fluid (CSF) PLP was low in 81%, CSF glycine was high in 80% and urinary vanillactic acid was high in 91% of the cases. We observed only a weak correlation between the severity of PNPO protein disruption and disease outcomes, indicating the importance of other factors, including seizure onset and time of therapy initiation. We found that pre-maturity, the delay in initiation of PLP therapy and early onset of seizures correlate with a poor neurocognitive outcome. Given the amenability of PNPO to PLP therapy for seizure control, early diagnosis is essential.
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Affiliation(s)
- Malak Alghamdi
- Medical Genetics Division, Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia.,Department of Pediatrics, King Saud University Medical City, Riyadh, Saudi Arabia
| | - Fahad A Bashiri
- Department of Pediatrics, King Saud University Medical City, Riyadh, Saudi Arabia.,Neurology division, Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Marwa Abdelhakim
- Computer, Electrical and Mathematical Science and Engineering Division (CEMSE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Nouran Adly
- College of Medicine Research Center, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Dima Z Jamjoom
- Department of Radiology and Medical Imaging, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Khalid M Sumaily
- Clinical Biochemistry Unit, Department of Laboratory Medicine, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia
| | - Bandar Alghanem
- Medical Research Core Facility and Platforms (MRCFP), King Abdullah International Medical, Research Center/King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), King, Abdulaziz Medical City (KAMC), NGHA, Riyadh, Saudi Arabia
| | - Stefan T Arold
- Computational Bioscience, Research Center (CBRC); Division of Biological and Environmental Sciences and Engineering, (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia.,Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, Montpellier, France
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48
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Alam T, Alazmi M, Naser R, Huser F, Momin AA, Astro V, Hong S, Walkiewicz KW, Canlas CG, Huser R, Ali AJ, Merzaban J, Adamo A, Jaremko M, Jaremko Ł, Bajic VB, Gao X, Arold ST. Proteome-level assessment of origin, prevalence and function of leucine-aspartic acid (LD) motifs. Bioinformatics 2020; 36:1121-1128. [PMID: 31584626 PMCID: PMC7703752 DOI: 10.1093/bioinformatics/btz703] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 09/03/2019] [Accepted: 09/28/2019] [Indexed: 01/08/2023] Open
Abstract
Motivation Leucine-aspartic acid (LD) motifs are short linear interaction motifs (SLiMs) that link paxillin family proteins to factors controlling cell adhesion, motility and survival. The existence and importance of LD motifs beyond the paxillin family is poorly understood. Results To enable a proteome-wide assessment of LD motifs, we developed an active learning based framework (LD motif finder; LDMF) that iteratively integrates computational predictions with experimental validation. Our analysis of the human proteome revealed a dozen new proteins containing LD motifs. We found that LD motif signalling evolved in unicellular eukaryotes more than 800 Myr ago, with paxillin and vinculin as core constituents, and nuclear export signal as a likely source of de novo LD motifs. We show that LD motif proteins form a functionally homogenous group, all being involved in cell morphogenesis and adhesion. This functional focus is recapitulated in cells by GFP-fused LD motifs, suggesting that it is intrinsic to the LD motif sequence, possibly through their effect on binding partners. Our approach elucidated the origin and dynamic adaptations of an ancestral SLiM, and can serve as a guide for the identification of other SLiMs for which only few representatives are known. Availability and implementation LDMF is freely available online at www.cbrc.kaust.edu.sa/ldmf; Source code is available at https://github.com/tanviralambd/LD/. Supplementary information Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Tanvir Alam
- Computational Bioscience Research Center (CBRC), Division of Computer, Electrical and Mathematical Sciences & Engineering (CEMSE), Saudi Arabia
| | - Meshari Alazmi
- Computational Bioscience Research Center (CBRC), Division of Computer, Electrical and Mathematical Sciences & Engineering (CEMSE), Saudi Arabia
| | - Rayan Naser
- Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Saudi Arabia
| | - Franceline Huser
- Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Saudi Arabia
| | - Afaque A Momin
- Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Saudi Arabia
| | - Veronica Astro
- Division of Biological and Environmental Sciences and Engineering (BESE), Saudi Arabia
| | - SeungBeom Hong
- Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Saudi Arabia
| | - Katarzyna W Walkiewicz
- Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Saudi Arabia
| | | | - Raphaël Huser
- Division of Computer, Electrical and Mathematical Sciences & Engineering (CEMSE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Amal J Ali
- Division of Biological and Environmental Sciences and Engineering (BESE), Saudi Arabia
| | - Jasmeen Merzaban
- Division of Biological and Environmental Sciences and Engineering (BESE), Saudi Arabia
| | - Antonio Adamo
- Division of Biological and Environmental Sciences and Engineering (BESE), Saudi Arabia
| | - Mariusz Jaremko
- Division of Biological and Environmental Sciences and Engineering (BESE), Saudi Arabia
| | - Łukasz Jaremko
- Division of Biological and Environmental Sciences and Engineering (BESE), Saudi Arabia
| | - Vladimir B Bajic
- Computational Bioscience Research Center (CBRC), Division of Computer, Electrical and Mathematical Sciences & Engineering (CEMSE), Saudi Arabia
| | - Xin Gao
- Computational Bioscience Research Center (CBRC), Division of Computer, Electrical and Mathematical Sciences & Engineering (CEMSE), Saudi Arabia
| | - Stefan T Arold
- Computational Bioscience Research Center (CBRC), Division of Biological and Environmental Sciences and Engineering (BESE), Saudi Arabia
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49
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Alam I, Kamau AA, Kulmanov M, Jaremko Ł, Arold ST, Pain A, Gojobori T, Duarte CM. Functional Pangenome Analysis Shows Key Features of E Protein Are Preserved in SARS and SARS-CoV-2. Front Cell Infect Microbiol 2020; 10:405. [PMID: 32850499 PMCID: PMC7396417 DOI: 10.3389/fcimb.2020.00405] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 06/30/2020] [Indexed: 11/13/2022] Open
Abstract
The spread of the novel coronavirus (SARS-CoV-2) has triggered a global emergency, that demands urgent solutions for detection and therapy to prevent escalating health, social, and economic impacts. The spike protein (S) of this virus enables binding to the human receptor ACE2, and hence presents a prime target for vaccines preventing viral entry into host cells. The S proteins from SARS and SARS-CoV-2 are similar, but structural differences in the receptor binding domain (RBD) preclude the use of SARS-specific neutralizing antibodies to inhibit SARS-CoV-2. Here we used comparative pangenomic analysis of all sequenced reference Betacoronaviruses, complemented with functional and structural analyses. This analysis reveals that, among all core gene clusters present in these viruses, the envelope protein E shows a variant cluster shared by SARS and SARS-CoV-2 with two completely-conserved key functional features, namely an ion-channel, and a PDZ-binding motif (PBM). These features play a key role in the activation of the inflammasome causing the acute respiratory distress syndrome, the leading cause of death in SARS and SARS-CoV-2 infections. Together with functional pangenomic analysis, mutation tracking, and previous evidence, on E protein as a determinant of pathogenicity in SARS, we suggest E protein as an alternative therapeutic target to be considered for further studies to reduce complications of SARS-CoV-2 infections in COVID-19.
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Affiliation(s)
- Intikhab Alam
- Biological and Environmental Science and Engineering (BESE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Allan A. Kamau
- Biological and Environmental Science and Engineering (BESE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Maxat Kulmanov
- Biological and Environmental Science and Engineering (BESE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Łukasz Jaremko
- Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Stefan T. Arold
- Biological and Environmental Science and Engineering (BESE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Arnab Pain
- Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Takashi Gojobori
- Biological and Environmental Science and Engineering (BESE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Carlos M. Duarte
- Biological and Environmental Science and Engineering (BESE), Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
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Lemtiri-Chlieh F, Arold ST, Gehring C. Mg 2+ Is a Missing Link in Plant Cell Ca 2+ Signalling and Homeostasis-A Study on Vicia faba Guard Cells. Int J Mol Sci 2020; 21:ijms21113771. [PMID: 32471040 PMCID: PMC7312177 DOI: 10.3390/ijms21113771] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 05/13/2020] [Accepted: 05/15/2020] [Indexed: 01/04/2023] Open
Abstract
Hyperpolarization-activated calcium channels (HACCs) are found in the plasma membrane and tonoplast of many plant cell types, where they have an important role in Ca2+-dependent signalling. The unusual gating properties of HACCs in plants, i.e., activation by membrane hyperpolarization rather than depolarization, dictates that HACCs are normally open in the physiological hyperpolarized resting membrane potential state (the so-called pump or P-state); thus, if not regulated, they would continuously leak Ca2+ into cells. HACCs are permeable to Ca2+, Ba2+, and Mg2+; activated by H2O2 and the plant hormone abscisic acid (ABA); and their activity in guard cells is greatly reduced by increasing amounts of free cytosolic Ca2+ ([Ca2+]Cyt), and hence closes during [Ca2+]Cyt surges. Here, we demonstrate that the presence of the commonly used Mg-ATP inside the guard cell greatly reduces HACC activity, especially at voltages ≤ −200 mV, and that Mg2+ causes this block. Therefore, we firstly conclude that physiological cytosolic Mg2+ levels affect HACC gating and that channel opening requires either high negative voltages (≥−200 mV) or displacement of Mg2+ away from the immediate vicinity of the channel. Secondly, based on structural comparisons with a Mg2+-sensitive animal inward-rectifying K+ channel, we propose that the likely candidate HACCs described here are cyclic nucleotide gated channels (CNGCs), many of which also contain a conserved diacidic Mg2+ binding motif within their pores. This conclusion is consistent with the electrophysiological data. Finally, we propose that Mg2+, much like in animal cells, is an important component in Ca2+ signalling and homeostasis in plants.
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Affiliation(s)
- Fouad Lemtiri-Chlieh
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia;
- Department of Neuroscience, University of Connecticut School of Medicine, Farmington, CT 06030, USA
- Correspondence: (F.L.-C); (C.G.)
| | - Stefan T. Arold
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia;
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Thuwal 23955-6900, Saudi Arabia
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
| | - Chris Gehring
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia;
- Department of Chemistry, Biology & Biotechnology, University of Perugia, 06121 Perugia, Italy
- Correspondence: (F.L.-C); (C.G.)
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