1
|
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] [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.
Collapse
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
| |
Collapse
|
2
|
Perkins RS, Singh R, Abell AN, Krum SA, Miranda-Carboni GA. The role of WNT10B in physiology and disease: A 10-year update. Front Cell Dev Biol 2023; 11:1120365. [PMID: 36814601 PMCID: PMC9939717 DOI: 10.3389/fcell.2023.1120365] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 01/16/2023] [Indexed: 02/09/2023] Open
Abstract
WNT10B, a member of the WNT family of secreted glycoproteins, activates the WNT/β-catenin signaling cascade to control proliferation, stemness, pluripotency, and cell fate decisions. WNT10B plays roles in many tissues, including bone, adipocytes, skin, hair, muscle, placenta, and the immune system. Aberrant WNT10B signaling leads to several diseases, such as osteoporosis, obesity, split-hand/foot malformation (SHFM), fibrosis, dental anomalies, and cancer. We reviewed WNT10B a decade ago, and here we provide a comprehensive update to the field. Novel research on WNT10B has expanded to many more tissues and diseases. WNT10B polymorphisms and mutations correlate with many phenotypes, including bone mineral density, obesity, pig litter size, dog elbow dysplasia, and cow body size. In addition, the field has focused on the regulation of WNT10B using upstream mediators, such as microRNAs (miRNAs) and long non-coding RNAs (lncRNAs). We also discussed the therapeutic implications of WNT10B regulation. In summary, research conducted during 2012-2022 revealed several new, diverse functions in the role of WNT10B in physiology and disease.
Collapse
Affiliation(s)
- Rachel S. Perkins
- Department of Orthopaedic Surgery and Biomedical Engineering, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Rishika Singh
- College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Amy N. Abell
- Department of Biological Sciences, University of Memphis, Memphis, TN, United States
| | - Susan A. Krum
- Department of Orthopaedic Surgery and Biomedical Engineering, University of Tennessee Health Science Center, Memphis, TN, United States,Center for Cancer Research, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Gustavo A. Miranda-Carboni
- Center for Cancer Research, University of Tennessee Health Science Center, Memphis, TN, United States,Department of Medicine, Division of Hematology and Oncology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States,*Correspondence: Gustavo A. Miranda-Carboni,
| |
Collapse
|
3
|
Bilal M, Hayat A, Umair M, Ullah A, Khawaja S, Malik E, Burmeister M, Bibi N, Umm-E-Kalsoom, Memon MI, Basit S, Ahmad W, Khan B. Sequence Variants in the WNT10B and TP63 Genes Underlying Isolated Split-Hand/Split-Foot Malformation. Genet Test Mol Biomarkers 2020; 24:600-607. [PMID: 32762550 DOI: 10.1089/gtmb.2020.0024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Aims: Split-hand/split-foot malformation (SHFM) is a developmental and congenital limb malformation characterized by variable degrees of medial clefting or absence of one or more digits in hands and/or feet. The aim of this study was to identify the underlying cause of three consanguineous Pakistani families showing various types of SHFM-related features. Materials and Methods: Standard molecular methods, including whole-genome sequencing (WGS), whole-exome sequencing (WES), microsatellite markers-based genotyping, and Sanger sequencing were performed to search for the likely causative variants. Results: In family A, WES revealed a novel homozygous missense variant [c.338G>A, p.(Gly113Asp)] in the WNT10B gene. In family B, microsatellite-based genotyping followed by Sanger sequencing revealed a novel homozygous 13 base pairs deletion [c.884-896delTCCAGCCCCGTCT, p.(Phe295Cysfs*87)] in the same gene. In family C, WGS divulged a previously reported heterozygous missense variant [c.956G>A, p.(Arg319His)] in the TP63 gene. Conclusions: Mapping and sequencing genes and variants for severe skeletal disorders, such as SHRM, will facilitate establishing specific genotype-phenotype correlations and providing genetic counseling for the families suffering from such conditions.
Collapse
Affiliation(s)
- Muhammad Bilal
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Amir Hayat
- Department of Biochemistry, Abdul Wali Khan University, Mardan, Pakistan
| | - Muhammad Umair
- Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Asmat Ullah
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan.,Department of Molecular Biology, Shaheed Zulfiqar Ali Bhutto Medical University, Islamabad, Pakistan.,Department of Human Genetics, University of Michigan, Ann Arbor, Michigan, USA
| | - Sundus Khawaja
- Department of Biotechnology, University of Azad Jammu & Kashmir, Muzaffarabad, Pakistan
| | - Erum Malik
- Department of Biochemistry, Shah Abdul Latif University, Khairpur, Pakistan
| | - Margit Burmeister
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan, USA
| | - Nousheen Bibi
- Department of Bioinformatics, Shaheed Benazir Bhutto Women University, Peshawar, Pakistan
| | - Umm-E-Kalsoom
- Department of Biochemistry, Hazara University Mansehra, Mansehra, Pakistan
| | - Muhammad Iqbal Memon
- Department of Anesthesia and Critical Care, PIMS, Shaheed Zulfiqar Ali Bhutto Medical University, Islamabad, Pakistan
| | - Sulman Basit
- Center for Genetics and Inherited Diseases, Taibah University, Medina, Saudi Arabia
| | - Wasim Ahmad
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Bushra Khan
- Department of Biochemistry, Abdul Wali Khan University, Mardan, Pakistan
| |
Collapse
|