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Xiong J, He Z, Wang L, Fan C, Chao J. DNA Origami-Enabled Gene Localization of Repetitive Sequences. J Am Chem Soc 2024; 146:6317-6325. [PMID: 38391280 DOI: 10.1021/jacs.4c00039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Repetitive sequences, which make up over 50% of human DNA, have diverse applications in disease diagnosis, forensic identification, paternity testing, and population genetic analysis due to their crucial functions for gene regulation. However, representative detection technologies such as sequencing and fluorescence imaging suffer from time-consuming protocols, high cost, and inaccuracy of the position and order of repetitive sequences. Here, we develop a precise and cost-effective strategy that combines the high resolution of atomic force microscopy with the shape customizability of DNA origami for repetitive sequence-specific gene localization. "Tri-block" DNA structures were specifically designed to connect repetitive sequences to DNA origami tags, thereby revealing precise genetic information in terms of position and sequence for high-resolution and high-precision visualization of repetitive sequences. More importantly, we achieved the results of simultaneous detection of different DNA repetitive sequences on the gene template with a resolution of ∼6.5 nm (19 nt). This strategy is characterized by high efficiency, high precision, low operational complexity, and low labor/time costs, providing a powerful complement to sequencing technologies for gene localization of repetitive sequences.
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Affiliation(s)
- Jinxin Xiong
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Zhimei He
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Lianhui Wang
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Chunhai Fan
- School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules, Zhangjiang Institute for Advanced Study and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
- Institute of Molecular Medicine, Shanghai Key Laboratory for Nucleic Acids Chemistry and Nanomedicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Jie Chao
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
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Seefried L, Banholzer D, Fischer R, Grafe I, Hüning I, Morhart R, Oheim R, Semler O, Siggelkow H, Stockklausner C, Hoyer-Kuhn H. [Recommendations for the healthcare of patients with FOP]. ORTHOPADIE (HEIDELBERG, GERMANY) 2023; 52:924-930. [PMID: 37603129 PMCID: PMC10622346 DOI: 10.1007/s00132-023-04425-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/10/2023] [Indexed: 08/22/2023]
Abstract
BACKGROUND Fibrodysplasia ossificans progressiva (FOP) is a very rare, severe genetic disorder triggered by a gain-of-function mutation in the ACVR1 gene that codes for the type I bone morphogenetic protein (BMP) receptor ACVR1 (activin A receptor-type 1), also known as ALK2 (activin receptor-like kinase-2). It leads to the onset and progression of heterotopic ossification (HO) in soft and connective tissue. HO is often preceded by episodes of soft tissue swelling or flare-ups. Flare-ups, characteristic of FOP, may be induced by trauma, infection, vaccination, or other medications, as well as surgical procedures or may occur spontaneously. As patients age, they develop severe mobility limitations due to progressive HO formation, including immobility, causing a shortened life expectancy. FOP's first characteristic clinical sign is the congenital malformation of one or both big toes with valgus axis deviation, which is present in almost all patients. To confirm the diagnosis, molecular genetic analysis of the ACVR1 gene is possible. AIM OF THE RECOMMENDATIONS This white paper aims to provide an overview of the necessary prerequisites and conditions for the care of patients with FOP and positively contribute to patients with FOP by improving the overall availability of knowledge. To achieve this, relevant aspects of the care of the very rare disease FOP are presented, from the initial diagnosis to the care in regular care based on the authors' knowledge (German FOP network) and the international FOP Treatment Guidelines. The recommendations presented here are addressed to all actors and decision-makers in the health care system and are also intended to inform patients and the public.
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Affiliation(s)
- L Seefried
- Osteologie/Klinische Studieneinheit, Universität Würzburg, Brettreichstr. 11, 97074, Würzburg, Deutschland.
| | - D Banholzer
- Sozialpädiatrisches Zentrum, Standort Mitte - Olgahospital, Haus M - Pädiatrie 1, Klinikum Stuttgart, Kriegsbergstr. 60, 70174, Stuttgart, Deutschland
| | - R Fischer
- FOP e. V., c/o Ralf Fischer, Frankfurter Landstr. 11a, 61440, Oberursel, Deutschland
| | - I Grafe
- Medizinische Klinik und Poliklinik III, Bereich Endokrinologie und Stoffwechsel, Diabetes, Knochenerkrankungen, UniversitätsCentrum für Gesundes Altern, Universitätsklinikum Carl Gustav Carus der Technischen Universität Dresden, Fetscherstr. 74, 01307, Dresden, Deutschland
- Zentrum für Metabolisch-Immunologische Erkrankungen und Therapietechnologien Sachsen (MITS), Technische Universität Dresden, Dresden, Deutschland
| | - I Hüning
- Institut für Humangenetik, Universitätsklinikum Schleswig-Holstein, Ratzeburger Allee 160, 23538, Lübeck, Deutschland
| | - R Morhart
- , Triftstr. 12, 82467, Garmisch-Partenkirchen, Deutschland
| | - R Oheim
- Institut für Osteologie und Biomechanik, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Deutschland
| | - O Semler
- Medizinische Fakultät und Uniklinik Köln, Klinik und Poliklinik für Kinder- und Jugendmedizin, Universität zu Köln, Köln, Deutschland
- Medizinische Fakultät und Uniklinik Köln, Zentrum für seltene Erkrankungen, Universität zu Köln, Köln, Deutschland
| | - H Siggelkow
- Zentrum für Endokrinologie, Osteologie, Rheumatologie, Nuklearmedizin und Humangenetik, MVZ ENDOKRINOLOGIKUM Göttingen, 37075, Göttingen, Deutschland
- Klinik für Gastroenterologie, gastrointestinale Onkologie und Endokrinologie, Universitätsmedizin Göttingen, Göttingen, Deutschland
| | - C Stockklausner
- Abteilung Kinder & Jugendmedizin, Klinikum Garmisch-Partenkirchen, Auenstr. 6, 82467, Garmisch-Partenkirchen, Deutschland
| | - H Hoyer-Kuhn
- Medizinische Fakultät und Uniklinik Köln, Klinik und Poliklinik für Kinder- und Jugendmedizin, Universität zu Köln, Köln, Deutschland.
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Kotb MM, Omar UF, Kaliya-Perumal AK. Living with Fibrodysplasia Ossificans Progressiva: Radiological Images of a Patient with Extensive Heterotopic Ossification. Diagnostics (Basel) 2023; 13:diagnostics13101711. [PMID: 37238196 DOI: 10.3390/diagnostics13101711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Fibrodysplasia ossificans progressiva (FOP) is an exceptionally rare genetic disorder characterized by the progressive formation of heterotopic bone in soft tissues. Here, we present the radiological findings of an 18-year-old female diagnosed with FOP who had severe spinal and right-upper-limb abnormalities. Her SF-36 scores suggested significant impairment in physical function, affecting work and other regular daily activities. Radiographic evaluation with X-rays and CT scans revealed scoliosis and total fusion of almost all levels of the spine, with only a few disc spaces spared. A large mass of heterotopic bone was observed, corresponding to the location of the paraspinal muscles in the lumbar region, branching upwards and fusing with the scapulae on both sides. On the right side, this exuberant heterotopic bone mass fused with the humerus, resulting in a fixed right shoulder, while the rest of the upper and lower limbs are spared and have a range of motion. Our report highlights the extensive ossification that can manifest in patients with FOP, resulting in restricted mobility and a poor quality of life. While there is no definite treatment that can reverse the effects of the disease, preventing injuries and minimizing iatrogenic harm is of critical importance in this patient as inflammation is known to play a key role in triggering heterotopic bone. Meanwhile, ongoing research into therapeutic strategies holds the key to unlocking a potential cure for FOP in the future.
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Affiliation(s)
- Mohammed Mostafa Kotb
- Department of Orthopedics and Traumatology, Reconstructive Microsurgery Unit, Assiut University School of Medicine, Assiut 71526, Egypt
| | - Usama Farghaly Omar
- Department of Orthopaedic Surgery, Hand and Reconstructive Microsurgery Service, Khoo Teck Puat Hospital, Singapore 768828, Singapore
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Ravazzolo R. Editorial of Special Issue “Fibrodysplasia Ossificans Progressiva: Studies on Disease Mechanism towards Novel Therapeutic Approaches”. Biomedicines 2022; 10:biomedicines10010140. [PMID: 35052819 PMCID: PMC8773764 DOI: 10.3390/biomedicines10010140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 11/08/2021] [Indexed: 11/16/2022] Open
Abstract
The Special Issue on “Fibrodysplasia Ossificans Progressiva: Studies on Disease Mechanism towards Novel Therapeutic Approaches” has published interesting and useful review articles and original experimental articles on fibrodysplasia ossificans progressiva (FOP), a very rare genetic disorder for which much effort is being devoted to search for a cure. In this editorial, I briefly cite the essential content of all the published articles.
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Affiliation(s)
- Roberto Ravazzolo
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Sciences (DiNOGMI), University of Genova, 16100 Genova, Italy
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