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Viakhireva I, Bychkov I, Markova T, Shatokhina O, Karandasheva K, Udalova V, Bekhtereva Y, Ryzhkova O, Skoblov M. The molecular complexity of COL2A1 splicing variants and their significance in phenotype severity. Bone 2024; 181:117013. [PMID: 38246255 DOI: 10.1016/j.bone.2024.117013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 12/25/2023] [Accepted: 01/05/2024] [Indexed: 01/23/2024]
Abstract
Pathogenic single nucleotide variants (SNVs) found in the COL2A1 gene are associated with a broad range of skeletal dysplasias due to their impact on the structure and function of the Col2a1 protein. However, the molecular mechanisms of some nucleotide variants detected during diagnostic testing remain unclear. The interpretation of missense and splicing variants caused by SNVs poses a significant challenge for clinicians. In this work, we analyzed 22 splicing variants in the COL2A1 gene which have been found in patients with COL2A1-associated skeletal dysplasias. Using a minigene system, we investigated the impact of these SNVs on splicing and gained insights into their molecular mechanisms and genotype-phenotype correlations for each patient. The results of our study are very useful for improving the accuracy of diagnosis and the management of patients with skeletal dysplasias caused by SNVs in the COL2A1 gene.
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Affiliation(s)
- I Viakhireva
- Research Centre for Medical Genetics, Moscow, Russian Federation.
| | - I Bychkov
- Research Centre for Medical Genetics, Moscow, Russian Federation
| | - T Markova
- Research Centre for Medical Genetics, Moscow, Russian Federation
| | - O Shatokhina
- Research Centre for Medical Genetics, Moscow, Russian Federation
| | - K Karandasheva
- Research Centre for Medical Genetics, Moscow, Russian Federation
| | - V Udalova
- LLC Genomed, Moscow, Russian Federation
| | | | - O Ryzhkova
- Research Centre for Medical Genetics, Moscow, Russian Federation
| | - M Skoblov
- Research Centre for Medical Genetics, Moscow, Russian Federation
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2
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Johansson J, Lidéus S, Frykholm C, Gunnarsson C, Mihalic F, Gudmundsson S, Ekvall S, Molin AM, Pham M, Vihinen M, Lagerstedt-Robinson K, Nordgren A, Jemth P, Ameur A, Annerén G, Wilbe M, Bondeson ML. Gustavson syndrome is caused by an in-frame deletion in RBMX associated with potentially disturbed SH3 domain interactions. Eur J Hum Genet 2024; 32:333-341. [PMID: 37277488 PMCID: PMC10923852 DOI: 10.1038/s41431-023-01392-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 03/07/2023] [Accepted: 05/12/2023] [Indexed: 06/07/2023] Open
Abstract
RNA binding motif protein X-linked (RBMX) encodes the heterogeneous nuclear ribonucleoprotein G (hnRNP G) that regulates splicing, sister chromatid cohesion and genome stability. RBMX knock down experiments in various model organisms highlight the gene's importance for brain development. Deletion of the RGG/RG motif in hnRNP G has previously been associated with Shashi syndrome, however involvement of other hnRNP G domains in intellectual disability remain unknown. In the current study, we present the underlying genetic and molecular cause of Gustavson syndrome. Gustavson syndrome was first reported in 1993 in a large Swedish five-generation family presented with profound X-linked intellectual disability and an early death. Extensive genomic analyses of the family revealed hemizygosity for a novel in-frame deletion in RBMX in affected individuals (NM_002139.4; c.484_486del, p.(Pro162del)). Carrier females were asymptomatic and presented with skewed X-chromosome inactivation, indicating silencing of the pathogenic allele. Affected individuals presented minor phenotypic overlap with Shashi syndrome, indicating a different disease-causing mechanism. Investigation of the variant effect in a neuronal cell line (SH-SY5Y) revealed differentially expressed genes enriched for transcription factors involved in RNA polymerase II transcription. Prediction tools and a fluorescence polarization assay imply a novel SH3-binding motif of hnRNP G, and potentially a reduced affinity to SH3 domains caused by the deletion. In conclusion, we present a novel in-frame deletion in RBMX segregating with Gustavson syndrome, leading to disturbed RNA polymerase II transcription, and potentially reduced SH3 binding. The results indicate that disruption of different protein domains affects the severity of RBMX-associated intellectual disabilities.
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Affiliation(s)
- Josefin Johansson
- Department of Immunology, Genetics and Pathology, Biomedical Centre, Uppsala University, Uppsala, Sweden
| | - Sarah Lidéus
- Department of Immunology, Genetics and Pathology, Biomedical Centre, Uppsala University, Uppsala, Sweden
| | - Carina Frykholm
- Department of Immunology, Genetics and Pathology, Biomedical Centre, Uppsala University, Uppsala, Sweden
| | - Cecilia Gunnarsson
- Department of Clinical Genetics, and Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Centre for Rare Diseases in South East Region of Sweden, Linköping University, Linköping, Sweden
| | - Filip Mihalic
- Department of Medical Biochemistry and Microbiology, Uppsala University, Box 582, Husargatan 3, 751 23, Uppsala, Sweden
| | - Sanna Gudmundsson
- Department of Immunology, Genetics and Pathology, Biomedical Centre, Uppsala University, Uppsala, Sweden
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA
| | - Sara Ekvall
- Department of Immunology, Genetics and Pathology, Biomedical Centre, Uppsala University, Uppsala, Sweden
| | - Anna-Maja Molin
- Department of Immunology, Genetics and Pathology, Biomedical Centre, Uppsala University, Uppsala, Sweden
| | - Mai Pham
- Department of Immunology, Genetics and Pathology, Biomedical Centre, Uppsala University, Uppsala, Sweden
| | - Mauno Vihinen
- Department of Experimental Medical Science, BMC B13, Lund University, SE-22 184, Lund, Sweden
| | - Kristina Lagerstedt-Robinson
- Clinical Genetics, Karolinska University Hospital, Solna, Sweden
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Ann Nordgren
- Clinical Genetics, Karolinska University Hospital, Solna, Sweden
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Genetics and Genomics, Sahlgrenska University Hospital, Gothenburg, Sweden
- Institute of Biomedicine, Department of Laboratory Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Per Jemth
- Department of Medical Biochemistry and Microbiology, Uppsala University, Box 582, Husargatan 3, 751 23, Uppsala, Sweden
| | - Adam Ameur
- Department of Immunology, Genetics and Pathology, Biomedical Centre, Uppsala University, Uppsala, Sweden
| | - Göran Annerén
- Department of Immunology, Genetics and Pathology, Biomedical Centre, Uppsala University, Uppsala, Sweden
| | - Maria Wilbe
- Department of Immunology, Genetics and Pathology, Biomedical Centre, Uppsala University, Uppsala, Sweden
| | - Marie-Louise Bondeson
- Department of Immunology, Genetics and Pathology, Biomedical Centre, Uppsala University, Uppsala, Sweden.
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Zheng Z, Shang X, Sun K, Hou Y, Zhang X, Xu J, Liu H, Ruan Z, Hou L, Guo Z, Wang G, Xu F, Guo F. P21 resists ferroptosis in osteoarthritic chondrocytes by regulating GPX4 protein stability. Free Radic Biol Med 2024; 212:336-348. [PMID: 38176476 DOI: 10.1016/j.freeradbiomed.2023.12.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/27/2023] [Accepted: 12/30/2023] [Indexed: 01/06/2024]
Abstract
Ferroptosis is involved in the pathogenesis of osteoarthritis (OA) while suppression of chondrocyte ferroptosis has a beneficial effect on OA. However, the molecular mechanism of ferroptosis in OA remains to be elucidated. P21, an indicator of aging, has been reported to inhibit ferroptosis, but the relationship between P21 and ferroptosis in OA remains unclear. Here, we aimed to investigate the expression and function of P21 in OA chondrocytes, and the involvement of P21 in the regulation of ferroptosis in chondrocytes. First, we demonstrated that high P21 expression was observed in the cartilage from OA patients and destabilized medial meniscus (DMM) mice, and in osteoarthritic chondrocytes induced by IL-1β, FAC and erastin. P21 knockdown exacerbated the reduction of Col2a1 and promoted the upregulation of MMP13 in osteoarthritic chondrocytes. Meanwhile, P21 knockdown exacerbated cartilage degradation in DMM-induced OA mouse models and decreased GPX4 expression in vivo. Furthermore, P21 knockdown sensitized chondrocytes to ferroptosis induced by erastin, which was closely associated with the accumulation of lipid peroxides. In mechanism, we demonstrated that P21 regulated the stability of GPX4 protein, and the regulation was independent of NRF2. Meanwhile, we found that P21 significantly affected the recruitment of GPX4 to linear ubiquitin chain assembly complex (LUBAC) and regulated the level of M1-linked ubiquitination of GPX4. Overall, our results suggest that P21 plays an essential anti-ferroptosis role in OA by regulating the stability of GPX4.
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Affiliation(s)
- Zehang Zheng
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xingru Shang
- Department of Rehabilitation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Sun
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yanjun Hou
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiong Zhang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jingting Xu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Haigang Liu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhaoxuan Ruan
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liangcai Hou
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhou Guo
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Genchun Wang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fei Xu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Fengjing Guo
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Yuan L, Chen X, Jankovic J, Deng H. CADASIL: A NOTCH3-associated cerebral small vessel disease. J Adv Res 2024:S2090-1232(24)00001-8. [PMID: 38176524 DOI: 10.1016/j.jare.2024.01.001] [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: 10/18/2023] [Revised: 12/16/2023] [Accepted: 01/01/2024] [Indexed: 01/06/2024] Open
Abstract
BACKGROUND Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is the most common hereditary cerebral small vessel disease (CSVD), pathologically characterized by a non-atherosclerotic and non-amyloid diffuse angiopathy primarily involving small to medium-sized penetrating arteries and leptomeningeal arteries. In 1996, mutation in the notch receptor 3 gene (NOTCH3) was identified as the cause of CADASIL. However, since that time other genetic CSVDs have been described, including the HtrA serine peptidase 1 gene-associated CSVD and the cathepsin A gene-associated CSVD, that clinically mimic the original phenotype. Though NOTCH3-associated CSVD is now a well-recognized hereditary disorder and the number of studies investigating this disease is increasing, the role of NOTCH3 in the pathogenesis of CADASIL remains elusive. AIM OF REVIEW This review aims to provide insights into the pathogenesis and the diagnosis of hereditary CSVDs, as well as personalized therapy, predictive approach, and targeted prevention. In this review, we summarize the current progress in CADASIL, including the clinical, neuroimaging, pathological, genetic, diagnostic, and therapeutic aspects, as well as differential diagnosis, in which the role of NOTCH3 mutations is highlighted. KEY SCIENTIFIC CONCEPTS OF REVIEW In this review, CADASIL is revisited as a NOTCH3-associated CSVD along with other hereditary CSVDs.
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Affiliation(s)
- Lamei Yuan
- Health Management Center, the Third Xiangya Hospital, Central South University, Changsha, China; Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China; Disease Genome Research Center, Central South University, Changsha, China; Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Xiangyu Chen
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China; Disease Genome Research Center, Central South University, Changsha, China; Department of Pathology, Changsha Maternal and Child Health Care Hospital, Changsha, China
| | - Joseph Jankovic
- Parkinson's Disease Center and Movement Disorders Clinic, Department of Neurology, Baylor College of Medicine, Houston, TX, USA
| | - Hao Deng
- Health Management Center, the Third Xiangya Hospital, Central South University, Changsha, China; Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China; Disease Genome Research Center, Central South University, Changsha, China; Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, China.
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5
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Tian R, Tong P, He Y, Zang L, Zhou S, Tian Q. Exome sequencing-aided precise diagnosis of four families with type I Stickler syndrome. Mol Genet Genomic Med 2024; 12:e2331. [PMID: 38073514 PMCID: PMC10767595 DOI: 10.1002/mgg3.2331] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 03/11/2023] [Accepted: 11/28/2023] [Indexed: 01/07/2024] Open
Abstract
BACKGROUND Stickler syndrome is a multisystemic disorder characterized by ophthalmological and non-ophthalmological abnormalities, frequently misdiagnosed due to high clinical heterogeneity. Stickler syndrome type I (STL1) is predominantly caused by mutations in the COL2A1 gene. METHODS Exome sequencing and co-segregation analysis were utilized to scrutinize 35 families with high myopia, and pathogenic mutations were identified. Mutant COL2A1 was overexpressed in cells for mechanistic study. A retrospective genotype-phenotype correlation analysis was further conducted. RESULTS Two novel pathogenic mutations (c.2895+1G>C and c.3505G>A (p.Val1169Ile)) and two reported mutations (c.1597C>T (p.Arg533*) and c.1693C>T (p.Arg565Cys)) in COL2A1 were identified causing STL1. These mutations are all in the G-X-Y triplet, and c.2895+1G>C contributed to aberrant RNA splicing. COL2A1 mutants tended to form large aggregates in the endoplasmic reticulum (ER) and elevated ER stress. Additionally, mutations c.550G>A (p.Ala184Thr) and c.2806G>A (p.Gly936Ser) in COL2A1 were found in high myopia families, but were likely benign, although c.2806G>A (p.Gly936Ser) is on G-X-Y triplet. Moreover, genotype-phenotype correlation analysis revealed that mutations in exon 2 mainly contribute to retinal detachment, whereas mutations in the collagen alpha-1 chain region of COL2A1 tend to cause non-ophthalmologic symptoms. CONCLUSION This study broadens the COL2A1 gene mutation spectrum, provides evidence for ER stress caused by pathogenic COL2A1 mutations and highlights the importance of non-ophthalmological examination in clinical diagnosis of high myopia.
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Affiliation(s)
- Runyi Tian
- Center for Medical Genetics, School of Life SciencesCentral South UniversityChangshaChina
- Institute of Molecular Precision MedicineXiangya Hospital, Central South UniversityChangshaChina
| | - Ping Tong
- Department of Ophthalmology, The Second Xiangya HospitalCentral South UniversityChangshaChina
| | - Yuhong He
- Institute of Molecular Precision MedicineXiangya Hospital, Central South UniversityChangshaChina
| | - Liyu Zang
- Center for Medical Genetics, School of Life SciencesCentral South UniversityChangshaChina
- Hunan Key Laboratory of Medical Genetics, School of Life SciencesCentral South UniversityChangshaChina
- Hunan Key Laboratory of Animal Models for Human Disease, School of Life SciencesCentral South UniversityChangshaChina
| | - Shimin Zhou
- Center for Medical Genetics, School of Life SciencesCentral South UniversityChangshaChina
- Hunan Key Laboratory of Medical Genetics, School of Life SciencesCentral South UniversityChangshaChina
- Hunan Key Laboratory of Animal Models for Human Disease, School of Life SciencesCentral South UniversityChangshaChina
| | - Qi Tian
- Center for Medical Genetics, School of Life SciencesCentral South UniversityChangshaChina
- Hunan Key Laboratory of Medical Genetics, School of Life SciencesCentral South UniversityChangshaChina
- Hunan Key Laboratory of Animal Models for Human Disease, School of Life SciencesCentral South UniversityChangshaChina
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6
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Cammarata-Scalisi F, Matysiak U, Willoughby CE, Ruzaike G, Cárdenas Tadich A, Araya Castillo M, Zara-Chirinos C, Bracho A, Avendaño A, Jilani H, Callea M. A Severe Case of Spondylometaphyseal Dysplasia Algerian Type with Two Mutations in COL2A1. J Pediatr Genet 2023; 12:339-341. [PMID: 38162154 PMCID: PMC10756726 DOI: 10.1055/s-0041-1732474] [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: 02/10/2021] [Accepted: 06/07/2021] [Indexed: 10/20/2022]
Abstract
Spondylometaphyseal dysplasia Algerian type (MIM no.: 184253) is an uncommon autosomal dominant skeletal dysplasia caused by heterozygous mutations in the COL2A1 gene (MIM no.: 120140). In this case based review, we reported a 5-year-old boy with short stature, severe dorsolumbar scoliosis, lumbar hyperlordosis, short trunk, and severe genu valgum . Radiological examination showed platyspondyly, irregular metaphyseal radiolucencies intermingled with radiodensities, and corner fractures. The patient has a c.3275G > A; p.Gly1092Asp mutation in exon 47 of the COL2A1 gene and a variant of unknown significance in c.1366-13C > A in intron 21. This latter sequence variant could partially or completely disrupt the natural splice acceptor site of intron 21/exon 22 in the COL2A1 gene leading to a potential modification of the phenotypic severity.
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Affiliation(s)
| | - Uta Matysiak
- Department of Pediatrics, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Colin E. Willoughby
- Genomic Medicine, School of Biomedical Sciences, Ulster University, Northern Ireland, United Kingdom
| | - Gunda Ruzaike
- Department of Pediatrics, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | | | | | - Carmen Zara-Chirinos
- Institute of Genetic Research, Faculty of Medicine, University of Zulia, Maracaibo, Venezuela
| | - Ana Bracho
- Institute of Genetic Research, Faculty of Medicine, University of Zulia, Maracaibo, Venezuela
| | - Andrea Avendaño
- Division of Medical Genetics, Department of Pediatrics, Faculty of Medicine, University of Los Andes, Mérida, Venezuela
| | - Houweyda Jilani
- Genetic Department, Mongi Slim Hospital, Marsa, Tunisia
- Faculty of Medicine of Tunis, University of Tunis El Manar, Tunisia
| | - Michele Callea
- Division of Dentistry, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
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Zhao M, Zhang R, Chang C, Jin Y, Xu L, Guo S, Schrodi S, He Y, He D. Case report: Whole exome sequencing and genome-wide methylation profiling of Czech dysplasia in a Chinese pedigree. Front Med (Lausanne) 2023; 10:1244888. [PMID: 38020103 PMCID: PMC10652562 DOI: 10.3389/fmed.2023.1244888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 09/21/2023] [Indexed: 12/01/2023] Open
Abstract
Background Czech dysplasia is a rare skeletal disorder with symptomatology including platyspondyly, brachydactyly of the third and fourth toes, and early-onset progressive pseudorheumatoid arthritis. The disorder segregates in an autosomal dominant fashion. A specific missense mutation (R275C, c.823C > T) in exon 13 of the COL2A1 gene has been identified in German and Japanese families. Case summary We present the case of a Chinese woman diagnosed with Czech dysplasia (proband) who carried a variant in the COL2A1 gene. Whole-exome sequencing (WES) identified the COL2A1 missense mutation (R275C, c.823C > T) in close relatives of the proband who also exhibited the same disorder. Conclusion This study is a thorough clinical and physiological description of Czech dysplasia in a Chinese patient.
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Affiliation(s)
- Mengfei Zhao
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- High Dependency Unit, Shanghai NO.3 Rehabilitation Hospital, Shanghai, China
| | - Runrun Zhang
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
- Department of Rheumatology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Cen Chang
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Arthritis Institute of Integrated Traditional and Western Medicine, Shanghai Chinese Medicine Research Institute, Shanghai, China
| | - Yehua Jin
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lingxia Xu
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Arthritis Institute of Integrated Traditional and Western Medicine, Shanghai Chinese Medicine Research Institute, Shanghai, China
| | - Shicheng Guo
- Department of Medical Genetics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | - Steven Schrodi
- Department of Medical Genetics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | - Yong He
- Department of Orthopedics, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Dongyi He
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Arthritis Institute of Integrated Traditional and Western Medicine, Shanghai Chinese Medicine Research Institute, Shanghai, China
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8
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Xu G, Lu X, Liu S, Zhang Y, Xu S, Ma X, Xia X, Lu F, Zou F, Wang H, Song J, Jiang J. MSC-Derived Exosomes Ameliorate Intervertebral Disc Degeneration By Regulating the Keap1/Nrf2 Axis. Stem Cell Rev Rep 2023; 19:2465-2480. [PMID: 37528254 DOI: 10.1007/s12015-023-10570-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/24/2023] [Indexed: 08/03/2023]
Abstract
Bone marrow mesenchymal stem cell derived exosomes (BMSC-exos) are a crucial means of intercellular communication and can regulate a range of biological processes by reducing inflammation, decreasing apoptosis and promoting tissue repair. The process of intervertebral disc degeneration (IVDD) is accompanied by increased reactive oxygen species (ROS) because of a decrease in the expression of Nrf2, a critical transcription factor that resists excessive ROS. Our study demonstrated that BMSC-exos decreased ROS production by inhibiting Keap1 and promoting Nrf2 expression, attenuating the apoptosis, inflammation, and degeneration of nucelus pulposus (NP) cells. BMSC-exos promoted an increase in Nrf2 and nuclear translocation, while NF-κB expression was downregulated during this process. Additionally, the expression of antioxidative proteins was elevated after treatment with BMSC-exos. In vivo, we found more NP tissue retention in the BMSC-exos-treated group, along with more expression of Nrf2 and antioxidant-related proteins. Our findings demonstrated for the first time that BMSC-exos could restore the down-regulated antioxidant response system in degenerating NP cells by modulating the Keap1/Nrf2 axis. BMSC-exos could be used as an immediate ROS modulator in the treatment of intervertebral disc degeneration. When BMSC-exos were uptaken by NPCs, the expression of Keap1 decreased and this led to increased expression of Nrf2. Nuclear translocation of Nrf2 then promoted the synthesis of antioxidants against ROS and inhibited NF-kB signalling. Cellular inflammation, apoptosis, and ECM-related indicators were further reduced. Together, the process of IVDD was alleviated.
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Affiliation(s)
- Guangyu Xu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Xiao Lu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Siyang Liu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Yuxuan Zhang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Shun Xu
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, Shanghai, 200240, China
| | - Xiaosheng Ma
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Xinlei Xia
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Feizhou Lu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, Shanghai, 200240, China
| | - Fei Zou
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Hongli Wang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Jian Song
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China.
| | - Jianyuan Jiang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China.
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9
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Ouyang Z, Dong L, Yao F, Wang K, Chen Y, Li S, Zhou R, Zhao Y, Hu W. Cartilage-Related Collagens in Osteoarthritis and Rheumatoid Arthritis: From Pathogenesis to Therapeutics. Int J Mol Sci 2023; 24:9841. [PMID: 37372989 DOI: 10.3390/ijms24129841] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/01/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023] Open
Abstract
Collagens serve essential mechanical functions throughout the body, particularly in the connective tissues. In articular cartilage, collagens provide most of the biomechanical properties of the extracellular matrix essential for its function. Collagen plays a very important role in maintaining the mechanical properties of articular cartilage and the stability of the ECM. Noteworthily, many pathogenic factors in the course of osteoarthritis and rheumatoid arthritis, such as mechanical injury, inflammation, and senescence, are involved in the irreversible degradation of collagen, leading to the progressive destruction of cartilage. The degradation of collagen can generate new biochemical markers with the ability to monitor disease progression and facilitate drug development. In addition, collagen can also be used as a biomaterial with excellent properties such as low immunogenicity, biodegradability, biocompatibility, and hydrophilicity. This review not only provides a systematic description of collagen and analyzes the structural characteristics of articular cartilage and the mechanisms of cartilage damage in disease states but also provides a detailed characterization of the biomarkers of collagen production and the role of collagen in cartilage repair, providing ideas and techniques for clinical diagnosis and treatment.
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Affiliation(s)
- Ziwei Ouyang
- Department of Clinical Pharmacology, The Second Affiliated Hospital of Anhui Medical University, Heifei 230601, China
- The Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Heifei 230032, China
| | - Lei Dong
- Department of Clinical Pharmacology, The Second Affiliated Hospital of Anhui Medical University, Heifei 230601, China
- The Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Heifei 230032, China
| | - Feng Yao
- Department of Clinical Pharmacology, The Second Affiliated Hospital of Anhui Medical University, Heifei 230601, China
| | - Ke Wang
- Department of Clinical Pharmacology, The Second Affiliated Hospital of Anhui Medical University, Heifei 230601, China
| | - Yong Chen
- Department of Clinical Pharmacology, The Second Affiliated Hospital of Anhui Medical University, Heifei 230601, China
| | - Shufang Li
- Department of Clinical Pharmacology, The Second Affiliated Hospital of Anhui Medical University, Heifei 230601, China
| | - Renpeng Zhou
- Department of Clinical Pharmacology, The Second Affiliated Hospital of Anhui Medical University, Heifei 230601, China
| | - Yingjie Zhao
- Department of Clinical Pharmacology, The Second Affiliated Hospital of Anhui Medical University, Heifei 230601, China
- The Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Heifei 230032, China
| | - Wei Hu
- Department of Clinical Pharmacology, The Second Affiliated Hospital of Anhui Medical University, Heifei 230601, China
- The Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Heifei 230032, China
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10
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Kaya S, Bailey KN, Schurman CA, Evans DS, Alliston T. Bone-cartilage crosstalk informed by aging mouse bone transcriptomics and human osteoarthritis genome-wide association studies. Bone Rep 2023; 18:101647. [PMID: 36636109 PMCID: PMC9830153 DOI: 10.1016/j.bonr.2022.101647] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 11/28/2022] [Accepted: 12/11/2022] [Indexed: 12/15/2022] Open
Abstract
Subchondral bone participates in crosstalk with articular cartilage to maintain joint homeostasis, and disruption of either tissue results in overall joint degeneration. Among the subchondral bone changes observed in osteoarthritis (OA), subchondral bone plate (SBP) thickening has a time-dependent relationship with cartilage degeneration and has recently been shown to be regulated by osteocytes. Here, we evaluate the effect of age on SBP thickness and cartilage degeneration in aging mice. We find that SBP thickness significantly increases by 18-months of age, corresponding temporally with increased cartilage degeneration. To identify factors in subchondral bone that may participate in bone cartilage crosstalk or OA, we leveraged mouse transcriptomic data from one joint tissue compartment - osteocyte-enriched bone - to search for enrichment with human OA in UK Biobank and Arthritis Research UK Osteoarthritis Genetics (arcOGEN) GWAS using the mouse2human (M2H, www.mouse2human.org) strategy. Genes differentially expressed in aging mouse bone are significantly enriched for human OA, showing joint site-specific (knee vs. hip) relationships, exhibit temporal associations with age, and unique gene clusters are implicated in each type of OA. Application of M2H identifies genes with known and unknown functions in osteocytes and OA development that are clinically associated with human OA. Altogether, this work prioritizes genes with a potential role in bone/cartilage crosstalk for further mechanistic study based on their association with human OA in GWAS.
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Affiliation(s)
- Serra Kaya
- Department of Orthopaedic Surgery, University of California San Francisco, CA, United States of America
| | - Karsyn N. Bailey
- Department of Orthopaedic Surgery, University of California San Francisco, CA, United States of America
- UC Berkeley-UCSF Graduate Program in Bioengineering, San Francisco, CA, United States of America
| | - Charles A. Schurman
- Department of Orthopaedic Surgery, University of California San Francisco, CA, United States of America
- UC Berkeley-UCSF Graduate Program in Bioengineering, San Francisco, CA, United States of America
| | - Daniel S. Evans
- California Pacific Medical Center Research Institute, San Francisco, CA, United States of America
| | - Tamara Alliston
- Department of Orthopaedic Surgery, University of California San Francisco, CA, United States of America
- UC Berkeley-UCSF Graduate Program in Bioengineering, San Francisco, CA, United States of America
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11
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Yue M, Liu Y, Zhang P, Li Z, Zhou Y. Integrative Analysis Reveals the Diverse Effects of 3D Stiffness upon Stem Cell Fate. Int J Mol Sci 2023; 24:ijms24119311. [PMID: 37298263 DOI: 10.3390/ijms24119311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/09/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
The origin of life and native tissue development are dependent on the heterogeneity of pluripotent stem cells. Bone marrow mesenchymal stem cells (BMMSCs) are located in a complicated niche with variable matrix stiffnesses, resulting in divergent stem cell fates. However, how stiffness drives stem cell fate remains unknown. For this study, we performed whole-gene transcriptomics and precise untargeted metabolomics sequencing to elucidate the complex interaction network of stem cell transcriptional and metabolic signals in extracellular matrices (ECMs) with different stiffnesses, and we propose a potential mechanism involved in stem cell fate decision. In a stiff (39~45 kPa) ECM, biosynthesis of aminoacyl-tRNA was up-regulated, and increased osteogenesis was also observed. In a soft (7~10 kPa) ECM, biosynthesis of unsaturated fatty acids and deposition of glycosaminoglycans were increased, accompanied by enhanced adipogenic/chondrogenic differentiation of BMMSCs. In addition, a panel of genes responding to the stiffness of the ECM were validated in vitro, mapping out the key signaling network that regulates stem cells' fate decisions. This finding of "stiffness-dependent manipulation of stem cell fate" provides a novel molecular biological basis for development of potential therapeutic targets within tissue engineering, from both a cellular metabolic and a biomechanical perspective.
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Affiliation(s)
- Muxin Yue
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Yunsong Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Ping Zhang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Zheng Li
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Yongsheng Zhou
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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12
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Tapak L, Ghasemi MK, Afshar S, Mahjub H, Soltanian A, Khotanlou H. Identification of gene profiles related to the development of oral cancer using a deep learning technique. BMC Med Genomics 2023; 16:35. [PMID: 36849997 PMCID: PMC9972685 DOI: 10.1186/s12920-023-01462-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 02/15/2023] [Indexed: 03/01/2023] Open
Abstract
BACKGROUND Oral cancer (OC) is a debilitating disease that can affect the quality of life of these patients adversely. Oral premalignant lesion patients have a high risk of developing OC. Therefore, identifying robust survival subgroups among them may significantly improve patient therapy and care. This study aimed to identify prognostic biomarkers that predict the time-to-development of OC and survival stratification for patients using state-of-the-art machine learning and deep learning. METHODS Gene expression profiles (29,096 probes) related to 86 patients from the GSE26549 dataset from the GEO repository were used. An autoencoder deep learning neural network model was used to extract features. We also used a univariate Cox regression model to select significant features obtained from the deep learning method (P < 0.05). High-risk and low-risk groups were then identified using a hierarchical clustering technique based on 100 encoded features (the number of units of the encoding layer, i.e., bottleneck of the network) from autoencoder and selected by Cox proportional hazards model and a supervised random forest (RF) classifier was used to identify gene profiles related to subtypes of OC from the original 29,096 probes. RESULTS Among 100 encoded features extracted by autoencoder, seventy features were significantly related to time-to-OC-development, based on the univariate Cox model, which was used as the inputs for the clustering of patients. Two survival risk groups were identified (P value of log-rank test = 0.003) and were used as the labels for supervised classification. The overall accuracy of the RF classifier was 0.916 over the test set, yielded 21 top genes (FUT8-DDR2-ATM-CD247-ETS1-ZEB2-COL5A2-GMAP7-CDH1-COL11A2-COL3A1-AHR-COL2A1-CHORDC1-PTP4A3-COL1A2-CCR2-PDGFRB-COL1A1-FERMT2-PIK3CB) associated with time to developing OC, selected among the original 29,096 probes. CONCLUSIONS Using deep learning, our study identified prominent transcriptional biomarkers in determining high-risk patients for developing oral cancer, which may be prognostic as significant targets for OC therapy. The identified genes may serve as potential targets for oral cancer chemoprevention. Additional validation of these biomarkers in experimental prospective and retrospective studies will launch them in OC clinics.
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Affiliation(s)
- Leili Tapak
- Department of Biostatistics, School of Public Health and Modeling of Noncommunicable Diseases Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohammad Kazem Ghasemi
- Department of Biostatistics, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Saeid Afshar
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Hossein Mahjub
- Department of Biostatistics, School of Public Health and Modeling of Noncommunicable Diseases Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Alireza Soltanian
- Department of Biostatistics, School of Public Health and Modeling of Noncommunicable Diseases Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Hassan Khotanlou
- Department of Computer Engineering, Bu-Ali Sina University, Hamadan, Iran
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13
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Azam FK, Sohrabi B, Rahimi H, Ganji M. Trio whole-exome sequencing reveals a novel de novo mutation in COL2A1 gene in an Iranian patient with hypochondroplasia. GENE REPORTS 2023. [DOI: 10.1016/j.genrep.2023.101754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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14
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Ultra-Rare Variants Identify Biological Pathways and Candidate Genes in the Pathobiology of Non-Syndromic Cleft Palate Only. Biomolecules 2023; 13:biom13020236. [PMID: 36830605 PMCID: PMC9953608 DOI: 10.3390/biom13020236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/20/2023] [Accepted: 01/24/2023] [Indexed: 01/28/2023] Open
Abstract
In recent decades, many efforts have been made to elucidate the genetic causes of non-syndromic cleft palate (nsCPO), a complex congenital disease caused by the interaction of several genetic and environmental factors. Since genome-wide association studies have evidenced a minor contribution of common polymorphisms in nsCPO inheritance, we used whole exome sequencing data to explore the role of ultra-rare variants in this study. In a cohort of 35 nsCPO cases and 38 controls, we performed a gene set enrichment analysis (GSEA) and a hypergeometric test for assessing significant overlap between genes implicated in nsCPO pathobiology and genes enriched in ultra-rare variants in our cohort. GSEA highlighted an enrichment of ultra-rare variants in genes principally belonging to cytoskeletal protein binding pathway (Probability Density Function corrected p-value = 1.57 × 10-4); protein-containing complex binding pathway (p-value = 1.06 × 10-2); cell adhesion molecule binding pathway (p-value = 1.24 × 10-2); ECM-receptor interaction pathway (p-value = 1.69 × 10-2); and in the Integrin signaling pathway (p-value = 1.28 × 10-2). Two genes implicated in nsCPO pathobiology, namely COL2A1 and GLI3, ranked among the genes (n = 34) with nominal enrichment in the ultra-rare variant collapsing analysis (Fisher's exact test p-value < 0.05). These genes were also part of an independent list of genes highly relevant to nsCPO biology (n = 25). Significant overlap between the two sets of genes (hypergeometric test p-value = 5.86 × 10-3) indicated that enriched genes are likely to be implicated in physiological palate development and/or the pathological processes of oral clefting. In conclusion, ultra-rare variants collectively impinge on biological pathways crucial to nsCPO pathobiology and point to candidate genes that may contribute to the individual risk of disease. Sequencing can be an effective approach to identify candidate genes and pathways for nsCPO.
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15
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Treatment outcomes of hips in patients with epiphyseal dysplasia. J Pediatr Orthop B 2022; 31:554-559. [PMID: 35502749 DOI: 10.1097/bpb.0000000000000982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Hip containment surgeries in multiple epiphyseal and spondyloepiphyseal dysplasia (MED/SED) patients aim to improve the mechanical environment of the hip joint. The purpose of this study was to determine if surgical intervention to improve femoral head coverage improved radiographic and clinical outcomes. A retrospective study identified patients with MED/SED seen in clinic between May 2000 and September 2017, with a minimum of 2-year follow-up. Patient charts/radiographs were reviewed for radiographic hip measurements, pain, and gait. Sixty-nine hips in 35 patients were identified. Forty-four hips were treated nonoperatively and 25 were treated surgically. The mean age at diagnosis was 6.2 years. The mean follow-up was 7.7 years for the surgical group and 7.1 years for the nonsurgical group. The mean postoperative follow-up was 5.4 years. Acetabular index decreased from initial to final visit by 9.0° in the surgical group and 1.6° in the nonsurgical group. Tonnis angle decreased by 13.5° in the surgical group and 1.5° in the nonsurgical group. Center edge angle increased by 19.0° in the surgical group and 7.1° in the nonsurgical group. Hips in the surgical group were 6.1 times more likely to experience an improvement in pain compared with hips in the nonsurgical group. Gait at the final follow-up was similar among the two groups. In this study cohort, containment surgery provided increased femoral head coverage; however, there was equal femoral head deformation despite intervention. Hips treated surgically were more likely to experience an improvement in pain; however, gait alterations did not improve.
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16
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Reeck JC, Oxford JT. The Shape of the Jaw-Zebrafish Col11a1a Regulates Meckel's Cartilage Morphogenesis and Mineralization. J Dev Biol 2022; 10:jdb10040040. [PMID: 36278545 PMCID: PMC9590009 DOI: 10.3390/jdb10040040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/19/2022] [Accepted: 09/14/2022] [Indexed: 11/25/2022] Open
Abstract
The expression of the col11a1a gene is essential for normal skeletal development, affecting both cartilage and bone. Loss of function mutations have been shown to cause abnormalities in the growth plate of long bones, as well as in craniofacial development. However, the specific effects on Meckel's cartilage have not been well studied. To further understand the effect of col11a1a gene function, we analyzed the developing jaw in zebrafish using gene knockdown by the injection of an antisense morpholino oligonucleotide using transgenic Tg(sp7:EGFP) and Tg(Fli1a:EGFP) EGFP reporter fish, as well as wildtype AB zebrafish. Our results demonstrate that zebrafish col11a1a knockdown impairs the cellular organization of Meckel's cartilage in the developing jaw and alters the bone formation that occurs adjacent to the Meckel's cartilage. These results suggest roles for Col11a1a protein in cartilage intermediates of bone development, the subsequent mineralization of the bony collar of long bones, and that which occurs adjacent to Meckel's cartilage in the developing jaw.
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17
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Christopoulos P, Eleftheriades A, Paltoglou G, Paschalidou E, Kalampokas E, Florentin L, Billi C, Eleftheriades M. Familial Aggregation of a Novel Missense Variant of COL2A1 Gene Associated with Short Extremities: Case Report and Review of the Literature. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9081229. [PMID: 36010119 PMCID: PMC9406900 DOI: 10.3390/children9081229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 04/16/2022] [Accepted: 04/16/2022] [Indexed: 11/25/2022]
Abstract
We present two cases of family members (first cousins) with short extremities caused by a novel variant of COL2A1 gene (NM_001844.5). Case 1 description: A 29-year-old woman presented in her first pregnancy for a second trimester anomaly scan at 23 weeks of gestation. Fetal long bones were measured below the third centile for gestational age. Follow-up scans revealed fetal long bone growth deceleration. Initial genetic work-up was negative and the rest of the maternal follow-up was unremarkable. A male baby weighing 3180 g was delivered at 39 weeks and 4 days of gestation. Case 2 description: A 33-year-old pregnant woman presented for a routine second trimester anomaly scan at 20 weeks and 4 days of gestation. All fetal measurements were appropriate for the gestational age. The routine growth scan performed at 32 weeks showed fetal long bone measurements below the third centile for gestational age, while the follow-up growth scan at 36 weeks and 4 days of gestation revealed consistent, below the third centile, fetal long bone growth. Given that the fetuses of these two cases were related (first cousins), whole exome sequencing (WES) was performed on Case 2. WES revealed a novel heterozygous missense variant c.1132G>A (p. Gly378Ser) of COL2A1 gene (NM_001844.5). Subsequently, targeted genetic sequencing for the variant was performed on Case 1 and the same novel variant was found. Targeted sequencing revealed the same variant in the mother of Case 1 and the father of Case 2 (siblings). A female baby weighing 3200 g was delivered at 40 weeks and 4 days of gestation.
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Affiliation(s)
- Panagiotis Christopoulos
- Second Department of Obstetrics and Gynaecology, ‘Aretaieio’ Hospital, Medical School, National and Kapodistrian University of Athens, 11528 Athens, Greece
| | - Anna Eleftheriades
- Second Department of Obstetrics and Gynaecology, ‘Aretaieio’ Hospital, Medical School, National and Kapodistrian University of Athens, 11528 Athens, Greece
- Postgraduate Programme “Maternal Fetal Medicine”, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Correspondence:
| | - George Paltoglou
- First Department of Pediatrics, ‘Aghia Sophia’ Children’s Hospital, Division of Endocrinology, Metabolism and Diabetes, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Eleni Paschalidou
- Second Department of Obstetrics and Gynaecology, ‘Aretaieio’ Hospital, Medical School, National and Kapodistrian University of Athens, 11528 Athens, Greece
| | - Emmanouil Kalampokas
- Second Department of Obstetrics and Gynaecology, ‘Aretaieio’ Hospital, Medical School, National and Kapodistrian University of Athens, 11528 Athens, Greece
| | | | | | - Makarios Eleftheriades
- Second Department of Obstetrics and Gynaecology, ‘Aretaieio’ Hospital, Medical School, National and Kapodistrian University of Athens, 11528 Athens, Greece
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18
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Fan L, Ji L, Xu Y, Shen G, Tang K, Li Z, Ye S, Shen X. A Novel Mutation c.3392G>T of COL2A1 Causes Spondyloepiphyseal Dysplasia Congenital by Affecting Pre-mRNA Splicing. Front Genet 2022; 13:827560. [PMID: 35692839 PMCID: PMC9174977 DOI: 10.3389/fgene.2022.827560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 03/22/2022] [Indexed: 11/13/2022] Open
Abstract
Spondyloepiphyseal dysplasia congenital (SEDC) is a rare chondrodysplasia caused by dominant pathogenic variants in COL2A1. Here, we detected a novel variant c.3392G > T (NM_001844.4) of COL2A1 in a Chinese family with SEDC by targeted next-generation sequencing. To confirm the pathogenicity of the variant, we generated an appropriate minigene construct based on HeLa and HEK293T cell lines. Splicing assay indicated that the mutated minigene led to aberrant splicing of COL2A1 pre-mRNA and produced an alternatively spliced transcript with a skipping of partial exon 48, which generated a predicted in-frame deletion of 15 amino acids (p. Gly1131_Pro1145del) in the COL2A1 protein. Due to the pathogenicity of the variation, we performed prenatal diagnosis on the proband’s wife, which indicated that the fetus carried the same mutation.
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Affiliation(s)
- Lihong Fan
- Center of Prenatal Diagnosis, Huzhou Maternity & Child Health Care Hospital, Huzhou, China
| | - Longfei Ji
- Department of Clinical Laboratory, The First People's Hospital of Huzhou, Huzhou, China
| | - Yuqing Xu
- Department of Reproductive Genetics, Women's Hospital, School of Medicine Zhejiang University, Hangzhou, China
| | - Guosong Shen
- Center of Prenatal Diagnosis, Huzhou Maternity & Child Health Care Hospital, Huzhou, China
| | - Kefeng Tang
- Center of Prenatal Diagnosis, Huzhou Maternity & Child Health Care Hospital, Huzhou, China
| | - Zhi Li
- Center of Prenatal Diagnosis, Huzhou Maternity & Child Health Care Hospital, Huzhou, China
| | - Sisi Ye
- Center of Prenatal Diagnosis, Huzhou Maternity & Child Health Care Hospital, Huzhou, China
| | - Xueping Shen
- Center of Prenatal Diagnosis, Huzhou Maternity & Child Health Care Hospital, Huzhou, China
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Expanding the clinical spectrum of COL2A1 related disorders by a mass like phenotype. Sci Rep 2022; 12:4489. [PMID: 35296718 PMCID: PMC8927422 DOI: 10.1038/s41598-022-08476-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 03/04/2022] [Indexed: 11/16/2022] Open
Abstract
MASS phenotype is a connective tissue disorder clinically overlapping with Marfan syndrome and caused by pathogenic variants in FBN1. We report four patients from three families presenting with a MASS-like phenotype consisting of tall stature, arachnodactyly, spinal deformations, dural ectasia, pectus and/or feet deformations, osteoarthritis, and/or high arched palate. Gene panel sequencing was negative for FBN1 variants. However, it revealed likely pathogenic missense variants in three individuals [c.3936G > T p.(Lys1312Asn), c.193G > A p.(Asp65Asn)] and a missense variant of unknown significance in the fourth patient [c.4013G > A p.(Ser1338Asn)] in propeptide coding regions of COL2A1. Pathogenic COL2A1 variants are associated with type II collagenopathies comprising a remarkable clinical variablility. Main features include skeletal dysplasia, ocular anomalies, and auditory defects. A MASS-like phenotype has not been associated with COL2A1 variants before. Thus, the identification of likely pathogenic COL2A1 variants in our patients expands the phenotypic spectrum of type II collagenopathies and suggests that a MASS-like phenotype can be assigned to various hereditary disorders of connective tissue. We compare the phenotypes of our patients with related disorders of connective tissue and discuss possible pathomechanisms and genotype–phenotype correlations for the identified COL2A1 variants. Our data recommend COL2A1 sequencing in FBN1-negative patients suggestive for MASS/Marfan-like phenotype (without aortopathy).
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Rodríguez-Olivas AO, Hernández-Zamora E, Reyes-Maldonado E. Legg-Calvé-Perthes disease overview. Orphanet J Rare Dis 2022; 17:125. [PMID: 35292045 PMCID: PMC8922924 DOI: 10.1186/s13023-022-02275-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 02/27/2022] [Indexed: 01/19/2023] Open
Abstract
Background Legg–Calvé–Perthes Disease (LCPD) is a necrosis of the femoral head which affects the range of motion of the hips. Its incidence is variable, ranging from 0.4/100,000 to 29.0/ 100,000 children. Although LCPD was first described in the beginning of the past century, limited is known about its etiology. Our objective is to describe the main areas of interest in Legg–Calve–Perthes disease. Methods A review of the literature regarding LCPD etiology was performed, considering the following inclusion criteria: Studies reporting clinical or preclinical results. The research group carried out a filtered search on the PubMed and Science Direct databases. To maximize the suitability of the search results, we combined the terms ‘‘Perthes disease” OR “LCPD” OR “children avascular femoral head necrosis” with “diagnostic” OR “treatment” OR “etiology” as either key words or MeSH terms. Results In this article been described some areas of interest in LCPD, we include topics such as: history, incidence, pathogenesis, diagnosis, treatment and possible etiology, since LCPD has an unknown etiology. Conclusions This review suggests that LCPD has a multifactorial etiology where environmental, metabolic and genetic agents could be involved.
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Affiliation(s)
- Armando O Rodríguez-Olivas
- Department of Morphology, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n, Col. Santo Tomás, Miguel Hidalgo, C.P. 11340, Mexico City, Mexico
| | - Edgar Hernández-Zamora
- Department of Morphology, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n, Col. Santo Tomás, Miguel Hidalgo, C.P. 11340, Mexico City, Mexico. .,Genomic Medicine, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City, Mexico.
| | - Elba Reyes-Maldonado
- Department of Morphology, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n, Col. Santo Tomás, Miguel Hidalgo, C.P. 11340, Mexico City, Mexico.
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Clinical and Genetic Characteristics of COL2A1-Associated Skeletal Dysplasias in 60 Russian Patients: Part I. Genes (Basel) 2022; 13:genes13010137. [PMID: 35052477 PMCID: PMC8775336 DOI: 10.3390/genes13010137] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/09/2022] [Accepted: 01/11/2022] [Indexed: 02/04/2023] Open
Abstract
The significant variability in the clinical manifestations of COL2A1-associated skeletal dysplasias makes it necessary to conduct a clinical and genetic analysis of individual nosological variants, which will contribute to improving our understanding of the pathogenetic mechanisms and prognosis. We presented the clinical and genetic characteristics of 60 Russian pediatric patients with type II collagenopathies caused by previously described and newly identified variants in the COL2A1 gene. Diagnosis confirmation was carried out by new generation sequencing of the target panel with subsequent validation of the identified variants using automated Sanger sequencing. It has been shown that clinical forms of spondyloepiphyseal dysplasias predominate in childhood, both with more severe clinical manifestations (58%) and with unusual phenotypes of mild forms with normal growth (25%). However, Stickler syndrome, type I was less common (17%). In the COL2A1 gene, 28 novel variants were identified, and a total of 63% of the variants were found in the triple helix region resulted in glycine substitution in Gly-XY repeats, which were identified in patients with clinical manifestations of congenital spondyloepiphyseal dysplasia with varying severity, and were not found in Stickler syndrome, type I and Kniest dysplasia. In the C-propeptide region, five novel variants leading to the development of unusual phenotypes of spondyloepiphyseal dysplasia have been identified.
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Genome sequencing identifies three molecular diagnoses including a mosaic variant in the COL2A1 gene in an individual with Pol III-related leukodystrophy and Feingold syndrome. Cold Spring Harb Mol Case Stud 2021; 7:mcs.a006143. [PMID: 34737199 PMCID: PMC8751417 DOI: 10.1101/mcs.a006143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 11/02/2021] [Indexed: 12/30/2022] Open
Abstract
Undiagnosed genetic disease imposes a significant burden on families and health-care resources, especially in cases with a complex phenotype. Here we present a child with suspected leukodystrophy in the context of additional features, including hearing loss, clinodactyly, rotated thumbs, tapered fingers, and simplified palmar crease. Trio genome sequencing (GS) identified three molecular diagnoses in this individual: compound heterozygous missense variants associated with polymerase III (Pol III)–related leukodystrophy, a 4-Mb de novo copy-number loss including the MYCN gene associated with Feingold syndrome, and a mosaic single-nucleotide variant associated with COL2A1-related disorders. These variants fully account for the individual's features, but also illustrate the potential for superimposed and unclear contributions of multiple diagnoses to an individual's overall presentation. This report demonstrates the advantage of GS in detection of multiple variant types, including low-level mosaic variants, and emphasizes the need for comprehensive genetic analysis and detailed clinical phenotyping to provide individuals and their families with the maximum benefit for clinical care and genetic counseling.
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23
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Wu K, Li Z, Zhu Y, Wang X, Chen G, Hou Z, Zhang Q. Discovery of sensorineural hearing loss and ossicle deformity in a Chinese Li nationality family with spondyloepiphyseal dysplasia congenita caused by p.G504S mutation of COL2A1. BMC Med Genomics 2021; 14:170. [PMID: 34182999 PMCID: PMC8240210 DOI: 10.1186/s12920-021-01020-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 05/24/2021] [Indexed: 11/10/2022] Open
Abstract
Background Spondyloepiphyseal dysplasia congenita (SEDC) is an autosomal dominant chondrodysplasia characterized by disproportionate short stature, abnormal epiphyses, and flattened vertebral bodies. COL2A1 has been confirmed as the pathogenic gene. Hearing loss represents an infrequent manifestation for 25–30% of patients with SEDC. The characteristics of the hearing impairment were rarely documented. Methods Audiological, ophthalmic, imaging examinations were conducted on the family members. The whole exome sequencing (WES) was performed to detect the candidate gene, and the Sanger sequencing was used to confirm the causative variation. Results COL2A1 c.1510G>A (p.G504S), a hot spot variation, was identified as the disease-causing mutation of the Chinese Li nationality family with SEDC. This variation was co-segregated with the SEDC phenotype in the family and was absent in the 1000 Genomes Project, ESP and ExAC. Clinically, several manifestations were first demonstrated in SEDC patients caused by p.G504S, including sensorineural hearing loss, auditory ossicles deformity, retinal detachment, sacrum cracked and elbow and wrist joints deformity. Other classical SEDC manifestations such as bones and joints pain, midfacial dysplasia, disproportionate short stature, spinal deformity, thoracocyllosis, coxa arthropathy, myopia and waddling gait were also showed in the family patients. Conclusion We first identified the mutation p.G504S in COL2A1 gene as the pathogenesis in a Chinese Li nationality family and reported the correlation between p.G504S and atypical clinical phenotypes including sensorineural hearing loss, auditory ossicles deformity, retinal detachment, sacrum cracked and elbow and wrist joints deformity. Our findings would extend the phenotypic spectrum of SEDC and deepen clinicians' understanding of genotype–phenotype correlation of the disease. Supplementary Information The online version contains supplementary material available at 10.1186/s12920-021-01020-y.
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Affiliation(s)
- Kan Wu
- Department of Otolaryngology-Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China.,Centre of Clinical Aerospace Medicine, School of Aerospace Medicine, Key Laboratory of Aerospace Medicine of Ministry of Education, Air Force Medical University, Xi'an, 710032, Shanxi Province, China
| | - Zhumei Li
- Department of Otolaryngology-Head and Neck Surgery, Wanning People's Hospital, Wanning, 571500, Hainan Province, China
| | - Yuhua Zhu
- Department of Otolaryngology-Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Xiaocheng Wang
- Centre of Clinical Aerospace Medicine, School of Aerospace Medicine, Key Laboratory of Aerospace Medicine of Ministry of Education, Air Force Medical University, Xi'an, 710032, Shanxi Province, China
| | - Guohui Chen
- Department of Otolaryngology-Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Zhaohui Hou
- Department of Otolaryngology-Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Qiujing Zhang
- Department of Otolaryngology-Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China.
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24
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Zhang Z, Zhu K, Dai H, Wang Q, Zhang C, Zhang Z. A novel mutation of COL2A1 in a large Chinese family with avascular necrosis of the femoral head. BMC Med Genomics 2021; 14:147. [PMID: 34088323 PMCID: PMC8178877 DOI: 10.1186/s12920-021-00995-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 05/27/2021] [Indexed: 12/05/2022] Open
Abstract
Avascular necrosis of the femoral head (ANFH) is a debilitating bone disease, characterized by collapse of the femoral head and subsequent loss of hip joint function. Heterozygous mutations in COL2A1 have been identified to cause familial ANFH. Here we report on a large Chinese family with ANFH and a novel heterozygous mutation (c.3517 G > A, p.Gly1173Ser) in exon 50 of COL2A1 in the Gly-X–Y domain. Previously, only five different COL2A1 mutations have been described in patients with familial ANFH. Therefore, our findings provide significant clues to the phenotype–genotype relationships in familial ANFH and may be helpful in clinical diagnosis. Furthermore, these results should assist further studies of the mechanisms underlying collagen diseases.
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Affiliation(s)
- Zeng Zhang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated the Sixth People's Hospital, 600 Yi-Shan Rd., Shanghai, 200233, People's Republic of China
| | - Kechao Zhu
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated the Sixth People's Hospital, 600 Yi-Shan Rd., Shanghai, 200233, People's Republic of China
| | - Huiyong Dai
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated the Sixth People's Hospital, 600 Yi-Shan Rd., Shanghai, 200233, People's Republic of China
| | - Qi Wang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated the Sixth People's Hospital, 600 Yi-Shan Rd., Shanghai, 200233, People's Republic of China.
| | - Changqing Zhang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated the Sixth People's Hospital, 600 Yi-Shan Rd., Shanghai, 200233, People's Republic of China
| | - Zhenlin Zhang
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Diseases, Shanghai Jiao Tong University Affiliated the Sixth People's Hospital, 600 Yi-Shan Rd., Shanghai, 200233, People's Republic of China
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25
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Plachy L, Dusatkova P, Maratova K, Petruzelkova L, Elblova L, Kolouskova S, Snajderova M, Obermannova B, Zemkova D, Sumnik Z, Lebl J, Pruhova S. Familial Short Stature-A Novel Phenotype of Growth Plate Collagenopathies. J Clin Endocrinol Metab 2021; 106:1742-1749. [PMID: 33570564 DOI: 10.1210/clinem/dgab084] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Indexed: 02/06/2023]
Abstract
CONTEXT Collagens are the most abundant proteins in the human body. In a growth plate, collagen types II, IX, X, and XI are present. Defects in collagen genes cause heterogeneous syndromic disorders frequently associated with short stature. Less is known about oligosymptomatic collagenopathies. OBJECTIVE This work aims to evaluate the frequency of collagenopathies in familial short stature (FSS) children and to describe their phenotype, including growth hormone (GH) treatment response. METHODS Eighty-seven FSS children (pretreatment height ≤ -2 SD both in the patient and his or her shorter parent) treated with GH were included in the study. Next-generation sequencing was performed to search for variants in the COL2A1, COL9A1, COL9A2, COL9A3, COL10A1, COL11A1, and COL11A2 genes. The results were evaluated using American College of Medical Genetics and Genomics guidelines. The GH treatment response of affected children was retrospectively evaluated. RESULTS A likely pathogenic variant in the collagen gene was found in 10 of 87 (11.5%) children. Detailed examination described mild asymmetry with shorter limbs and mild bone dysplasia signs in 2 of 10 and 4 of 10 affected children, respectively. Their growth velocity improved from a median of 5.3 cm/year to 8.7 cm/year after 1 year of treatment. Their height improved from a median of -3.1 SD to -2.6 SD and to -2.2 SD after 1 and 3 years of therapy, respectively. The final height reached by 4 of 10 children differed by -0.67 to +1.0 SD and -0.45 to +0.5 SD compared to their pretreatment height and their affected untreated parent's height, respectively. CONCLUSION Oligosymptomatic collagenopathies are a frequent cause of FSS. The short-term response to GH treatment is promising.
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Affiliation(s)
- Lukas Plachy
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, 150 06 Prague 5, Czech Republic
| | - Petra Dusatkova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, 150 06 Prague 5, Czech Republic
| | - Klara Maratova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, 150 06 Prague 5, Czech Republic
| | - Lenka Petruzelkova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, 150 06 Prague 5, Czech Republic
| | - Lenka Elblova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, 150 06 Prague 5, Czech Republic
| | - Stanislava Kolouskova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, 150 06 Prague 5, Czech Republic
| | - Marta Snajderova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, 150 06 Prague 5, Czech Republic
| | - Barbora Obermannova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, 150 06 Prague 5, Czech Republic
| | - Dana Zemkova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, 150 06 Prague 5, Czech Republic
| | - Zdenek Sumnik
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, 150 06 Prague 5, Czech Republic
| | - Jan Lebl
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, 150 06 Prague 5, Czech Republic
| | - Stepanka Pruhova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, 150 06 Prague 5, Czech Republic
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26
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Shboul M, Sassi H, Jilani H, Rejeb I, Elaribi Y, Hizem S, Jemaa LB, Hilmi M, Kircher SG, Al Kaissi A. The phenotypic spectrum in a patient with Glycine to Serine mutation in the <i>COL2A1</i> gene: overview study. AIMS MOLECULAR SCIENCE 2021. [DOI: 10.3934/molsci.2021006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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27
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Travessa AM, Díaz-González F, Mirco T, Oliveira-Ramos F, Parrón-Pajares M, Heath KE, Sousa AB. Spondyloepiphyseal dysplasia type Stanescu: Expanding the clinical and molecular spectrum of a very rare type II collagenopathy. Am J Med Genet A 2020; 182:2715-2721. [PMID: 32856782 DOI: 10.1002/ajmg.a.61817] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 07/01/2020] [Accepted: 07/18/2020] [Indexed: 12/25/2022]
Abstract
Spondyloepiphyseal dysplasia type Stanescu (SED-S) is a very rare type II collagenopathy. We describe an 8-year-old boy who presented with short trunk, C2-C3 vertebral fusion, hand, foot, leg and thigh pain, stiffness and limited joint mobility, and waddling gait. Radiographs showed platyspondyly with anterior wedging and endplate irregularities, broad femoral necks, and large epiphyses and epiphyseal equivalents. Differential diagnosis included progressive pseudorheumatoid dysplasia and SED-S. A skeletal dysplasia custom-designed NGS panel was performed and the heterozygous pathogenic variant c.620G>A; p.(Gly207Glu) in COL2A1 was detected, establishing the diagnosis of SED-S. Vertebral fusions, observed in our patient, have not been previously described in this dysplasia. This variant has not been previously associated with SED-S, but was reported in two other families with spondyloepiphyseal dysplasia. Thus, this case expands the clinical and mutational spectrum of SED-S and demonstrates that SED-S significantly overlaps with other skeletal dysplasias.
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Affiliation(s)
- André M Travessa
- Department of Medical Genetics, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Centro Académico de Medicina de Lisboa, Lisbon, Portugal.,Institute of Histology and Developmental Biology, Faculty of Medicine, University of Lisbon, Lisbon, Portugal
| | - Francisca Díaz-González
- Institute of Medical & Molecular Genetics (INGEMM), IdiPAZ, Hospital Universitario La Paz, Universidad Autonóma de Madrid (UAM), and CIBERER, ISCIII, Madrid, Spain.,Skeletal Dysplasia Multidisciplinary Unit (UMDE), Hospital Universitario La Paz, UAM, Madrid, Spain
| | - Teresa Mirco
- Department of Physical Therapy and Rehabilitation, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Centro Académico de Medicina de Lisboa, Lisbon, Portugal
| | - Filipa Oliveira-Ramos
- Department of Rheumatology, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Centro Académico de Medicina de Lisboa, Lisbon, Portugal
| | - Manuel Parrón-Pajares
- Skeletal Dysplasia Multidisciplinary Unit (UMDE), Hospital Universitario La Paz, UAM, Madrid, Spain.,Department of Radiology, Hospital Universitario La Paz, UAM, Madrid, Spain
| | - Karen E Heath
- Institute of Medical & Molecular Genetics (INGEMM), IdiPAZ, Hospital Universitario La Paz, Universidad Autonóma de Madrid (UAM), and CIBERER, ISCIII, Madrid, Spain.,Skeletal Dysplasia Multidisciplinary Unit (UMDE), Hospital Universitario La Paz, UAM, Madrid, Spain
| | - Ana Berta Sousa
- Department of Medical Genetics, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Centro Académico de Medicina de Lisboa, Lisbon, Portugal.,Laboratory of Basic Immunology, Faculty of Medicine, University of Lisbon, Lisbon, Portugal
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28
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Bennett NK, Nguyen MK, Darch MA, Nakaoka HJ, Cousineau D, Ten Hoeve J, Graeber TG, Schuelke M, Maltepe E, Kampmann M, Mendelsohn BA, Nakamura JL, Nakamura K. Defining the ATPome reveals cross-optimization of metabolic pathways. Nat Commun 2020; 11:4319. [PMID: 32859923 PMCID: PMC7455733 DOI: 10.1038/s41467-020-18084-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 08/04/2020] [Indexed: 12/24/2022] Open
Abstract
Disrupted energy metabolism drives cell dysfunction and disease, but approaches to increase or preserve ATP are lacking. To generate a comprehensive metabolic map of genes and pathways that regulate cellular ATP-the ATPome-we conducted a genome-wide CRISPR interference/activation screen integrated with an ATP biosensor. We show that ATP level is modulated by distinct mechanisms that promote energy production or inhibit consumption. In our system HK2 is the greatest ATP consumer, indicating energy failure may not be a general deficiency in producing ATP, but rather failure to recoup the ATP cost of glycolysis and diversion of glucose metabolites to the pentose phosphate pathway. We identify systems-level reciprocal inhibition between the HIF1 pathway and mitochondria; glycolysis-promoting enzymes inhibit respiration even when there is no glycolytic ATP production, and vice versa. Consequently, suppressing alternative metabolism modes paradoxically increases energy levels under substrate restriction. This work reveals mechanisms of metabolic control, and identifies therapeutic targets to correct energy failure.
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Affiliation(s)
- Neal K Bennett
- Gladstone Institute of Neurological Disease, San Francisco, CA, 94158, USA
| | - Mai K Nguyen
- Gladstone Institute of Neurological Disease, San Francisco, CA, 94158, USA
| | - Maxwell A Darch
- Gladstone Institute of Neurological Disease, San Francisco, CA, 94158, USA
| | - Hiroki J Nakaoka
- Department of Radiation Oncology, University of California, San Francisco, CA, 94158, USA
| | - Derek Cousineau
- Gladstone Institute of Neurological Disease, San Francisco, CA, 94158, USA
| | - Johanna Ten Hoeve
- UCLA Metabolomics Center, Crump Institute for Molecular Imaging, Department of Molecular and Medical Pharmacology, University of California, Los Angeles, CA, 90095, USA
| | - Thomas G Graeber
- UCLA Metabolomics Center, Crump Institute for Molecular Imaging, Department of Molecular and Medical Pharmacology, University of California, Los Angeles, CA, 90095, USA
| | - Markus Schuelke
- NeuroCure Clinical Research Center, Charité-Universitätsmedizin Berlin, 10117, Berlin, Germany
- Department of Neuropediatrics, Charité-Universitätsmedizin Berlin, 13353, Berlin, Germany
| | - Emin Maltepe
- Department of Pediatrics, University of California, San Francisco, CA, USA
| | - Martin Kampmann
- Department of Biochemistry and Biophysics and Institute for Neurodegenerative Diseases, University of California, San Francisco, CA, USA
- Chan Zuckerberg Biohub, San Francisco, CA, 94158, USA
| | - Bryce A Mendelsohn
- Gladstone Institute of Neurological Disease, San Francisco, CA, 94158, USA
| | - Jean L Nakamura
- Department of Radiation Oncology, University of California, San Francisco, CA, 94158, USA
| | - Ken Nakamura
- Gladstone Institute of Neurological Disease, San Francisco, CA, 94158, USA.
- Department of Neurology, University of California, San Francisco, CA, 94158, USA.
- Graduate Program in Biomedical Sciences, University of California, San Francisco, CA, USA.
- Graduate Program in Neuroscience, University of California, San Francisco, CA, USA.
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29
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Zhang B, Wang C, Zhang Y, Jiang Y, Qin Y, Pang D, Zhang G, Liu H, Xie Z, Yuan H, Ouyang H, Wang J, Tang X. A CRISPR-engineered swine model of COL2A1 deficiency recapitulates altered early skeletal developmental defects in humans. Bone 2020; 137:115450. [PMID: 32450343 DOI: 10.1016/j.bone.2020.115450] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/08/2020] [Accepted: 05/20/2020] [Indexed: 12/15/2022]
Abstract
Loss-of-function mutations in the COL2A1 gene were previously described as a cause of type II collagenopathy (e.g., spondyloepiphyseal dysplasia, Stickler syndrome type I), a major subgroup of genetic skeletal diseases. However, the pathogenic mechanisms associated with COL2A1 mutations remain unclear, and there are few large-mammal models of these diseases. In this study, we established a swine model carrying COL2A1 mutations using CRISPR/Cas9 and somatic cell nuclear transfer technologies. Animals mutant for COL2A1 exhibited severe skeletal dysplasia characterized by shortened long bones, abnormal vertebrae, depressed nasal bridge, and cleft palate. Importantly, COL2A1 mutant piglets suffered tracheal collapse, which was almost certainly the cause of their death shortly after birth. In conclusion, we have demonstrated for the first time that overt and striking skeletal dysplasia occurring in human patients can be recapitulated in large transgenic mammals. This model underscores the importance of employing large animals as models to investigate the pathogenesis and potential therapeutics of skeletal diseases.
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Affiliation(s)
- Boyan Zhang
- Orthopedic Medical Center, The Second Hospital of Jilin University, 130041 Changchun, China
| | - Chenyu Wang
- Department of Plastic and Reconstructive Surgery, First Bethune Hospital of Jilin University, 130021 Changchun, China
| | - Yue Zhang
- Department of Radiation Oncology, First Bethune Hospital of Jilin University, 130021 Changchun, China
| | - Yuan Jiang
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, China
| | - Yanguo Qin
- Orthopedic Medical Center, The Second Hospital of Jilin University, 130041 Changchun, China.
| | - Daxin Pang
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, China.
| | - Guizhen Zhang
- Orthopedic Medical Center, The Second Hospital of Jilin University, 130041 Changchun, China; Research Centre of the Second Hospital of Jilin University, 130041 Changchun, China.
| | - He Liu
- Orthopedic Medical Center, The Second Hospital of Jilin University, 130041 Changchun, China.
| | - Zicong Xie
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, China.
| | - Hongming Yuan
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, China
| | - Hongsheng Ouyang
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, China.
| | - Jincheng Wang
- Orthopedic Medical Center, The Second Hospital of Jilin University, 130041 Changchun, China.
| | - Xiaochun Tang
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, 130062 Changchun, China.
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30
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Liu X, Li J, Lin S, Xiao X, Luo J, Wei W, Ling Y, Fang L, Xiao H, Chen L, Huang J, Zhong Y, Zhang Q. Evaluation of the genetic association between early-onset primary angle-closure glaucoma and retinitis pigmentosa. Exp Eye Res 2020; 197:108118. [PMID: 32562694 DOI: 10.1016/j.exer.2020.108118] [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] [Received: 02/19/2020] [Revised: 04/11/2020] [Accepted: 06/14/2020] [Indexed: 12/12/2022]
Abstract
Primary angle-closure glaucoma (PACG) and retinitis pigmentosa (RP) can co-occur, but the mechanism of their association is not yet established. The purpose of this study was to investigate the differences in ocular biometry parameters and molecular genetics in patients with PACG with or without RP, and to determine the association between PACG and RP. Patients with early-onset PACG (age of onset <45 years) with or without RP were selected from the glaucoma outpatient department after full ocular examinations by the same glaucoma specialist (LX). Ocular biometry parameters were statistically analyzed. Blood samples were collected from the probands, and genomic DNA was sent out for whole exome sequencing. Variants in 326 selected genes, were extracted from the whole exome sequencing data and filtered using multiple bioinformatics analysis. The 326 genes included 10 PACG-associated genes from two genome wide association studies; 45 genes associated with anterior segment dysgenesis, microcornea, and microphthalmia; and 271 RetNet genes. Potential pathogenic variants (PPV) were obtained and underwent further genotype-phenotype analysis. As a result, a total of 32 probands with early-onset PACG were collected; nine had accompanying RP. No significant differences were noted for ocular biometry parameters between patients with PACG with RP and with PACG alone. Systematic analysis of the variants revealed that 16 of 32 probands (50%) carried PPV in 15 of 326 genes, including 14 RetNet genes and one anterior segment dysgenesis-associated gene. Of these 16 probands with PPV, five (55.56%) were from the group of nine probands with both had PACG and RP and 11 (47.83%) were from the group of 23 probands with PACG alone. Of the 15 genes, five genes, CRB1, COL2A1, RHO, RP1L1, and PAX6, were reported to cause phenotypes including glaucoma. The variants in RetNet genes appeared to be associated with a significant proportion of PACG, especially in probands with both PACG and RP. These findings enrich the phenotype spectrum of RetNet genes and provide clues for genetic screening for glaucoma. Our study suggests a genetic association between PACG and RP, although the cause-effect relationship between them needs further validation.
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Affiliation(s)
- Xing Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China.
| | - Jiali Li
- Department of Ophthalmology, Zhujiang Hospital, Southern Medical University, Guangzhou, 515282, China
| | - Shufen Lin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Xueshan Xiao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Jingyi Luo
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Wei Wei
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Yunlan Ling
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Lei Fang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Hui Xiao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Liming Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Jingjing Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Yimin Zhong
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Qingjiong Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China
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31
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Wang D, Gao F, Hu F, Li J, Zhang S, Xu P, Chang Q, Jiang R, Wu J. Next-generation sequencing-aided precise diagnosis of Stickler syndrome type I. Acta Ophthalmol 2020; 98:e440-e446. [PMID: 31736238 DOI: 10.1111/aos.14302] [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] [Received: 06/24/2019] [Accepted: 10/15/2019] [Indexed: 12/14/2022]
Abstract
PURPOSE To explore an early, rapid and precise diagnosis of Stickler syndrome type I (STL1) and to enrich the spectrum of COL2A1 mutations in the Chinese population, which is poorly studied at present. METHODS In the current study, we analysed 115 patients with high myopia by next-generation sequencing and identified five STL1 patients from four unrelated Chinese families. The clinical features of all patients were reviewed in detail. RESULTS Four variants of COL2A1 were identified, including two novel variants (c.1435delG and c.184delG) and two previously reported variants (c.1221+1G>A and c.1030C>T). Three variants caused premature termination codons which were common in STL1. In addition, we proposed a new diagnostic tactic to improve early diagnostics of STL1 in patients. CONCLUSION In this study, our findings expanded the spectrum of COL2A1 mutations with two novel variants and provided a new diagnostic tactic for reference, which was of great significance. Precise diagnosis on the basis of clinical manifestations and genetic testing will become the gold standard to diagnose inherited ocular disorders or syndromes in the future.
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Affiliation(s)
- Dan‐Dan Wang
- Eye Institute Eye and ENT Hospital Shanghai Medical College Fudan University Shanghai China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Science and Technology Commission of Shanghai Municipality Shanghai China
- Key Laboratory of Myopia (Fudan University) Chinese Academy of Medical Sciences National Health Commission Shanghai China
| | - Feng‐Juan Gao
- Eye Institute Eye and ENT Hospital Shanghai Medical College Fudan University Shanghai China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Science and Technology Commission of Shanghai Municipality Shanghai China
- Key Laboratory of Myopia (Fudan University) Chinese Academy of Medical Sciences National Health Commission Shanghai China
| | - Fang‐Yuan Hu
- Eye Institute Eye and ENT Hospital Shanghai Medical College Fudan University Shanghai China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Science and Technology Commission of Shanghai Municipality Shanghai China
- Key Laboratory of Myopia (Fudan University) Chinese Academy of Medical Sciences National Health Commission Shanghai China
| | | | - Sheng‐Hai Zhang
- Eye Institute Eye and ENT Hospital Shanghai Medical College Fudan University Shanghai China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Science and Technology Commission of Shanghai Municipality Shanghai China
- Key Laboratory of Myopia (Fudan University) Chinese Academy of Medical Sciences National Health Commission Shanghai China
| | - Ping Xu
- Eye Institute Eye and ENT Hospital Shanghai Medical College Fudan University Shanghai China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Science and Technology Commission of Shanghai Municipality Shanghai China
- Key Laboratory of Myopia (Fudan University) Chinese Academy of Medical Sciences National Health Commission Shanghai China
| | - Qing Chang
- Eye Institute Eye and ENT Hospital Shanghai Medical College Fudan University Shanghai China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Science and Technology Commission of Shanghai Municipality Shanghai China
- Key Laboratory of Myopia (Fudan University) Chinese Academy of Medical Sciences National Health Commission Shanghai China
| | - Rui Jiang
- Eye Institute Eye and ENT Hospital Shanghai Medical College Fudan University Shanghai China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Science and Technology Commission of Shanghai Municipality Shanghai China
- Key Laboratory of Myopia (Fudan University) Chinese Academy of Medical Sciences National Health Commission Shanghai China
| | - Ji‐Hong Wu
- Eye Institute Eye and ENT Hospital Shanghai Medical College Fudan University Shanghai China
- Shanghai Key Laboratory of Visual Impairment and Restoration, Science and Technology Commission of Shanghai Municipality Shanghai China
- Key Laboratory of Myopia (Fudan University) Chinese Academy of Medical Sciences National Health Commission Shanghai China
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Bessueille L, Briolay A, Como J, Mebarek S, Mansouri C, Gleizes M, El Jamal A, Buchet R, Dumontet C, Matera EL, Mornet E, Millan JL, Fonta C, Magne D. Tissue-nonspecific alkaline phosphatase is an anti-inflammatory nucleotidase. Bone 2020; 133:115262. [PMID: 32028019 PMCID: PMC7185042 DOI: 10.1016/j.bone.2020.115262] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 01/16/2020] [Accepted: 02/03/2020] [Indexed: 12/11/2022]
Abstract
Tissue-nonspecific alkaline phosphatase (TNAP) is necessary for skeletal mineralization by its ability to hydrolyze the mineralization inhibitor inorganic pyrophosphate (PPi), which is mainly generated from extracellular ATP by ectonucleotide pyrophosphatase phosphodiesterase 1 (NPP1). Since children with TNAP deficiency develop bone metaphyseal auto-inflammations in addition to rickets, we hypothesized that TNAP also exerts anti-inflammatory effects relying on the hydrolysis of pro-inflammatory adenosine nucleotides into the anti-inflammatory adenosine. We explored this hypothesis in bone metaphyses of 7-day-old Alpl+/- mice (encoding TNAP), in mineralizing hypertrophic chondrocytes and osteoblasts, and non-mineralizing mesenchymal stem cells (MSCs) and neutrophils, which express TNAP and are present, or can be recruited in the metaphysis. Bone metaphyses of 7-day-old Alpl+/- mice had significantly increased levels of Il-1β and Il-6 and decreased levels of the anti-inflammatory Il-10 cytokine as compared with Alpl+/+ mice. In bone metaphyses, murine hypertrophic chondrocytes and osteoblasts, Alpl mRNA levels were much higher than those of the adenosine nucleotidases Npp1, Cd39 and Cd73. In hypertrophic chondrocytes, inhibition of TNAP with 25 μM of MLS-0038949 decreased the hydrolysis of AMP and ATP. However, TNAP inhibition did not significantly modulate ATP- and adenosine-associated effects in these cells. We observed that part of TNAP proteins in hypertrophic chondrocytes was sent from the cell membrane to matrix vesicles, which may explain why TNAP participated in the hydrolysis of ATP but did not significantly modulate its autocrine pro-inflammatory effects. In MSCs, TNAP did not participate in ATP hydrolysis nor in secretion of inflammatory mediators. In contrast, in neutrophils, TNAP inhibition with MLS-0038949 significantly exacerbated ATP-associated activation and secretion of IL-1β, and extended cell survival. Collectively, these results demonstrate that TNAP is a nucleotidase in both hypertrophic chondrocytes and neutrophils, and that this nucleotidase function is associated with autocrine effects on inflammation only in neutrophils.
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Affiliation(s)
- L Bessueille
- Univ Lyon; University Lyon 1; ICBMS, UMR CNRS 5246, F-69622 Lyon, France
| | - A Briolay
- Univ Lyon; University Lyon 1; ICBMS, UMR CNRS 5246, F-69622 Lyon, France
| | - J Como
- Univ Lyon; University Lyon 1; ICBMS, UMR CNRS 5246, F-69622 Lyon, France
| | - S Mebarek
- Univ Lyon; University Lyon 1; ICBMS, UMR CNRS 5246, F-69622 Lyon, France
| | - C Mansouri
- Univ Lyon; University Lyon 1; ICBMS, UMR CNRS 5246, F-69622 Lyon, France
| | - M Gleizes
- Centre de recherche cerveau et cognition (CERCO), UMR CNRS 5549 université de Toulouse, UPS, France
| | - A El Jamal
- Univ Lyon; University Lyon 1; ICBMS, UMR CNRS 5246, F-69622 Lyon, France
| | - R Buchet
- Univ Lyon; University Lyon 1; ICBMS, UMR CNRS 5246, F-69622 Lyon, France
| | - C Dumontet
- Anticancer Antibodies, CRCL, INSERM U1052, CNRS UMR 5286, CLB, UCBL, Lyon, France
| | - E L Matera
- Anticancer Antibodies, CRCL, INSERM U1052, CNRS UMR 5286, CLB, UCBL, Lyon, France
| | - E Mornet
- Service de biologie, unité de génétique constitutionnelle, centre hospitalier de Versailles, Le Chesnay, France
| | - J L Millan
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - C Fonta
- Centre de recherche cerveau et cognition (CERCO), UMR CNRS 5549 université de Toulouse, UPS, France
| | - D Magne
- Univ Lyon; University Lyon 1; ICBMS, UMR CNRS 5246, F-69622 Lyon, France.
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Wang DD, Gao FJ, Hu FY, Zhang SH, Xu P, Wu JH. Mutation Spectrum of Stickler Syndrome Type I and Genotype-phenotype Analysis in East Asian Population: a systematic review. BMC MEDICAL GENETICS 2020; 21:27. [PMID: 32039712 PMCID: PMC7008542 DOI: 10.1186/s12881-020-0963-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 01/24/2020] [Indexed: 12/18/2022]
Abstract
Abstract
Background
Stickler syndrome is the most common genetic cause of rhegmatogenous retinal detachment (RRD) in children, and has a high risk of blindness. Type I (STL1) is the most common subtype, caused by COL2A1 mutations. This study aims to analyze the mutation spectrum of COL2A1 and further elucidate the genotype-phenotype relationships in the East Asian populations with STL1, which is poorly studied at present.
Methods
By searching MEDLINE, Web of Science, CNKI, Wanfang Data, HGMD and Clinvar, all publications associated with STL1 were collected. Then, they were carefully screened to obtain all reported STL1-related variants in COL2A1 and clinical features in East Asian patients with STL1.
Results
There were 274 COL2A1 variants identified in 999 patients with STL1 from 466 unrelated families, and more than half of them were truncation mutations. Of the 107 STL1 patients reported in the East Asian population, it was found that patients with truncation mutations had milder systemic phenotypes, whereas patients with splicing mutations had severer phenotypes. In addition, several recurrent variants (c.3106C > T, c.1833 + 1G > A, c.2710C > T and c.1693C > T) were found.
Conclusions
Genotype-phenotype correlations should certainly be studied carefully, contributed to making personalized follow-up plans and predicting prognosis of this disorder. Genome editing holds great potential for treating inherited diseases caused by pathogenic mutations. In this study, several recurrent variants were found, providing potential candidate targets for genetic manipulation in the future.
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Zheng WB, Li LJ, Zhao DC, Wang O, Jiang Y, Xia WB, Xing XP, Li M. Novel variants in COL2A1 causing rare spondyloepiphyseal dysplasia congenita. Mol Genet Genomic Med 2020; 8:e1139. [PMID: 31972903 PMCID: PMC7057085 DOI: 10.1002/mgg3.1139] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 12/29/2019] [Accepted: 01/05/2020] [Indexed: 12/13/2022] Open
Abstract
Background Spondyloepiphyseal dysplasia congenita (SEDC) is an extremely rare inherited chondrodysplasia characterized by abnormal epiphyses, short stature, and flattened vertebral bodies. We investigate the phenotypes and the disease‐associated variants of SEDC in two unrelated Chinese families. Methods We identified disease‐associated variants in two nonconsanguineous families with SEDC using targeted next‐generation sequencing and confirmed the variants using Sanger sequencing. We investigated the phenotypes of the patients, including clinical manifestations, bone turnover biomarkers, bone mineral density and skeletal radiographic features. Results Two probands were diagnosed as SEDC according to the phenotypes of disproportionately short‐trunk stature, kyphosis, lumbar lordosis and adduction deformity of hips. Radiographs revealed kyphosis and lumbar lordosis, flattened vertebral bodies, compressed femoral heads and shortening of the femurs. Bone mineral density of the probands was lower than that of age‐ and gender‐matched normal children, but bone turnover biomarker levels were within normal range. Two novel heterozygous missense variants (NM_001844.5: c.1654 G>A, NP_001835.3: p.Gly552Arg; NM_001844.5: c.3518G>T, NP_001835.3: p.Gly1173Val) in collagen type II alpha 1 chain (COL2A1) were detected in the two families, which would impair the formation of stable triple‐helical type II collagen. Conclusions We identified two novel disease‐associated variants in COL2A1, which led to severe SEDC. Our findings expanded the gene variant spectrum and phenotypic spectrum of extremely rare type II collagenopathies.
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Affiliation(s)
- Wen-Bin Zheng
- Key Laboratory of Endocrinology, Department of Endocrinology, National Health and Family Planning Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lu-Jiao Li
- Key Laboratory of Endocrinology, Department of Endocrinology, National Health and Family Planning Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Di-Chen Zhao
- Key Laboratory of Endocrinology, Department of Endocrinology, National Health and Family Planning Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ou Wang
- Key Laboratory of Endocrinology, Department of Endocrinology, National Health and Family Planning Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yan Jiang
- Key Laboratory of Endocrinology, Department of Endocrinology, National Health and Family Planning Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wei-Bo Xia
- Key Laboratory of Endocrinology, Department of Endocrinology, National Health and Family Planning Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiao-Ping Xing
- Key Laboratory of Endocrinology, Department of Endocrinology, National Health and Family Planning Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Mei Li
- Key Laboratory of Endocrinology, Department of Endocrinology, National Health and Family Planning Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Xu Y, Li L, Wang C, Yue H, Zhang H, Gu J, Hu W, Liu L, Zhang Z. Clinical and Molecular Characterization and Discovery of Novel Genetic Mutations of Chinese Patients with COL2A1-related Dysplasia. Int J Biol Sci 2020; 16:859-868. [PMID: 32071555 PMCID: PMC7019135 DOI: 10.7150/ijbs.38811] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Accepted: 10/30/2019] [Indexed: 01/01/2023] Open
Abstract
COL2A1-related disorders represent a heterogeneous group of skeletal dysplasias with a wide phenotypic spectrum. Our aim is to characterize the clinical and molecular phenotypes of Chinese patients with COL2A1-related dysplasia and to explore their phenotype-genotype relations. Clinical data were collected, physical examinations were conducted, and X-ray radiography and genetic analyses were performed in ten families involving 29 patients with COL2A1-related dysplasia. Nine mutations were identified in COL2A1, including five novel (c.816+6C>T, p.Gly246Arg, p.Gly678Glu, p.Gly1014Val and p.Ter1488Gln) and four reported previously (p.Gly204Val, p.Arg275Cys, p.Gly504Ser and p.Arg719Cys). Based on clinical features and molecular mutations, the ten families were classified into five definite COL2A1-related disorders: four families with spondyloepiphyseal dysplasia congenita (SEDC), three with osteoarthritis with mild chondrodysplasia (OSCPD), one with Czech dysplasia, one with Kniest dysplasia, and one with epiphyseal dysplasia, multiple, with myopia and deafness (EDMMD). Based on genetic testing results, prenatal diagnosis and genetic counseling were accomplished for one female proband with OSCDP. Chinese patients with OSCDP, Czech dysplasia and EDMMD caused by COL2A1 mutations were first reported, expanding the spectrum of COL2A1 mutations and the phenotype of COL2A1-related disorders and providing further evidence for the phenotype-genotype relations, which may help improve procreative management of COL2A1-related disorders.
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Affiliation(s)
- Yang Xu
- Department of Osteoporosis and Bone Diseases, Metabolic Bone Disease and Genetics Research Unit, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China
| | - Li Li
- Department of Osteoporosis and Bone Diseases, Metabolic Bone Disease and Genetics Research Unit, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China
| | - Chun Wang
- Department of Osteoporosis and Bone Diseases, Metabolic Bone Disease and Genetics Research Unit, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China
| | - Hua Yue
- Department of Osteoporosis and Bone Diseases, Metabolic Bone Disease and Genetics Research Unit, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China
| | - Hao Zhang
- Department of Osteoporosis and Bone Diseases, Metabolic Bone Disease and Genetics Research Unit, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China
| | - Jiemei Gu
- Department of Osteoporosis and Bone Diseases, Metabolic Bone Disease and Genetics Research Unit, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China
| | - Weiwei Hu
- Department of Osteoporosis and Bone Diseases, Metabolic Bone Disease and Genetics Research Unit, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China
| | - Lianyong Liu
- Department of Endocrinology, Punan Hospital of Pudong New District, 279 Linyi Road, Shanghai 200125, China
| | - Zhenlin Zhang
- Department of Osteoporosis and Bone Diseases, Metabolic Bone Disease and Genetics Research Unit, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China
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Zhang B, Zhang Y, Wu N, Li J, Liu H, Wang J. Integrated analysis of COL2A1 variant data and classification of type II collagenopathies. Clin Genet 2019; 97:383-395. [PMID: 31758797 DOI: 10.1111/cge.13680] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/18/2019] [Accepted: 11/20/2019] [Indexed: 11/29/2022]
Abstract
The COL2A1 gene encodes the alpha-1 chain of type II procollagen. Type II collagen, comprised of three identical alpha-1 chains, is the major component of cartilage. COL2A1 gene variants are the etiologies of genetic diseases, termed type II collagenopathies, with a wide spectrum of clinical presentations. To date, at least 460 distinct COL2A1 mutations, identified in 663 independent probands, and 21 definite disorders have been reported. Nevertheless, a well-defined genotype-phenotype correlation has not been established, and few hot spots of mutation have been reported. In this study, we analyzed data of COL2A1 variants and clinical information of patients obtained from the Leiden Open Variation Database 3.0, as well as the currently available relevant literature. We determined the characteristics of the COL2A1 variants and distributions of the clinical manifestations in patients, and identified four likely genotype-phenotype correlations. Moreover, we classified 21 COL2A1-related disorders into five categories, which may assist clinicians in understanding the essence of these complex phenotypes and prompt genetic screening in clinical practice.
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Affiliation(s)
- Boyan Zhang
- Orthopedic Medical Center, The Second Hospital of Jilin University, Changchun, China
| | - Yue Zhang
- Department of Radiation Oncology, First Bethune Hospital of Jilin University, Changchun, China
| | - Naichao Wu
- Orthopedic Medical Center, The Second Hospital of Jilin University, Changchun, China
| | - Jianing Li
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun, China
| | - He Liu
- Orthopedic Medical Center, The Second Hospital of Jilin University, Changchun, China
| | - Jincheng Wang
- Orthopedic Medical Center, The Second Hospital of Jilin University, Changchun, China
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Liu C, Yang M, Liu L, Zhang Y, Zhu Q, Huang C, Wang H, Zhang Y, Li H, Li C, Huang B, Feng C, Zhou Y. Molecular basis of degenerative spinal disorders from a proteomic perspective (Review). Mol Med Rep 2019; 21:9-19. [PMID: 31746390 PMCID: PMC6896343 DOI: 10.3892/mmr.2019.10812] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 10/16/2019] [Indexed: 02/07/2023] Open
Abstract
Intervertebral disc degeneration (IDD) and ligamentum flavum hypertrophy (LFH) are major causes of degenerative spinal disorders. Comparative and proteomic analysis was used to identify differentially expressed proteins (DEPs) in IDD and LFH discs compared with normal discs. Subsequent gene ontology term enrichment analysis and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis of the DEPs in human IDD discs or LFH samples were performed to identify the biological processes and signaling pathways involved in IDD and LFH. The PI3K-AKT signaling pathway, advanced glycation endproducts-receptor for advanced glycation endproducts signaling pathway, p53 signaling pathway, and transforming growth factor-b signaling pathway were activated in disc degeneration. This review summarizes the recently identified DEPs, including prolargin, fibronectin 1, cartilage intermediate layer protein, cartilage oligomeric matrix protein, and collagen types I, II and IV, and their pathophysiological roles in degenerative spinal disorders, and may provide a deeper understanding of the pathological processes of human generative spinal disorders. The present review aimed to summarize significantly changed proteins in degenerative spinal disorders and provide a deeper understanding to prevent these diseases.
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Affiliation(s)
- Chang Liu
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing 400037, P.R. China
| | - Minghui Yang
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing 400037, P.R. China
| | - Libangxi Liu
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing 400037, P.R. China
| | - Yang Zhang
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing 400037, P.R. China
| | - Qi Zhu
- Medical Research Center, Southwestern Hospital, Army Medical University, Chongqing 400037, P.R. China
| | - Cong Huang
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing 400037, P.R. China
| | - Hongwei Wang
- Department of Orthopedics, General Hospital of Shenyang Military Area Command of Chinese PLA, Shenyang, Liaoning 110016, P.R. China
| | - Yaqing Zhang
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing 400037, P.R. China
| | - Haiyin Li
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing 400037, P.R. China
| | - Changqing Li
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing 400037, P.R. China
| | - Bo Huang
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing 400037, P.R. China
| | - Chencheng Feng
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing 400037, P.R. China
| | - Yue Zhou
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing 400037, P.R. China
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Plachy L, Strakova V, Elblova L, Obermannova B, Kolouskova S, Snajderova M, Zemkova D, Dusatkova P, Sumnik Z, Lebl J, Pruhova S. High Prevalence of Growth Plate Gene Variants in Children With Familial Short Stature Treated With GH. J Clin Endocrinol Metab 2019; 104:4273-4281. [PMID: 30753492 DOI: 10.1210/jc.2018-02288] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 02/04/2019] [Indexed: 12/28/2022]
Abstract
CONTEXT Familial short stature (FSS) is a term describing a growth disorder that is vertically transmitted. Milder forms may result from the combined effect of multiple genes; more severe short stature is suggestive of a monogenic condition. The etiology of most FSS cases has not been thoroughly elucidated to date. OBJECTIVES To identify the genetic etiology of severe FSS in children treated with GH because of the diagnosis of small for gestational age or GH deficiency (SGA/GHD). DESIGN, SETTINGS, AND PATIENTS Of 736 children treated with GH because of GHD/SGA, 33 with severe FSS (life-minimum height -2.5 SD or less in both the patient and shorter parent) were included in the study. The genetic etiology was known in 5 of 33 children prior to the study [ACAN (in 2], NF1, PTPN11, and SOS1). In the remaining 28 of 33, whole-exome sequencing was performed. The results were evaluated using American College of Medical Genetics and Genomics standards and guidelines. RESULTS In 30 of 33 children (90%), we found at least one variant with potential clinical significance in genes known to affect growth. A genetic cause was elucidated in 17 of 33 (52%). Of these children, variants in growth plate-related genes were found in 9 of 17 [COL2A1, COL11A1, and ACAN (all in 2), FLNB, FGFR3, and IGF1R], and IGF-associated proteins were affected in 2 of 17 (IGFALS and HMGA2). In the remaining 6 of 17, the discovered genetic mechanisms were miscellaneous (TRHR, MBTPS2, GHSR, NF1, PTPN11, and SOS1). CONCLUSIONS Single-gene variants are frequent among families with severe FSS, with variants affecting the growth plate being the most prevalent.
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Affiliation(s)
- Lukas Plachy
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
- University Hospital Motol, Prague 5, Czech Republic
| | - Veronika Strakova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
- University Hospital Motol, Prague 5, Czech Republic
| | - Lenka Elblova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
- University Hospital Motol, Prague 5, Czech Republic
| | - Barbora Obermannova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
- University Hospital Motol, Prague 5, Czech Republic
| | - Stanislava Kolouskova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
- University Hospital Motol, Prague 5, Czech Republic
| | - Marta Snajderova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
- University Hospital Motol, Prague 5, Czech Republic
| | - Dana Zemkova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
- University Hospital Motol, Prague 5, Czech Republic
| | - Petra Dusatkova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
- University Hospital Motol, Prague 5, Czech Republic
| | - Zdenek Sumnik
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
- University Hospital Motol, Prague 5, Czech Republic
| | - Jan Lebl
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
- University Hospital Motol, Prague 5, Czech Republic
| | - Stepanka Pruhova
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
- University Hospital Motol, Prague 5, Czech Republic
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Liu J, Huang L, He Z, Lin S, Wang Y, Luo Y. Clinical value of genetic analysis in prenatal diagnosis of short femur. Mol Genet Genomic Med 2019; 7:e978. [PMID: 31566912 PMCID: PMC6825856 DOI: 10.1002/mgg3.978] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 08/26/2019] [Accepted: 08/29/2019] [Indexed: 12/31/2022] Open
Abstract
Background Fetal femur length (FL) is an important biometric index in prenatal screening. The etiology of short femur is diverse, with some pathogenic causes leading to adverse outcomes. To improve the accuracy and practicability of diagnosis, we investigated the value of genetic analysis in prenatal diagnosis of short femur. Methods We examined chromosomal microarray analysis (CMA) (64 fetuses) and karyotyping (59 fetuses) data retrospectively for short femur without fetal growth restriction (FGR). Genetic testing was conducted for 15 fetuses. Results Karyotyping and CMA detected chromosomal aberrations at rates of 13.6% and 27.2%, respectively. Among fetuses with other abnormalities, detection rates were 21.0% higher with CMA than karyotyping. CMA identified chromosomal abnormalities in 36.4% of cases with a FL 2–4 standard deviations (SDs) below the gestational age (GA) mean. Abnormality detection by CMA reached 38.5% in the second trimester. Duplication of 12p, 16p13.1 deletion, and uniparental disomy 16 were identified by CMA in three cases of short femur. Gene sequencing detected clinically notable mutations in 12/15 fetuses, among which 9/12 fetuses had FLs >4 SDs below the GA mean. Conclusions CMA yielded a higher detection value than karyotyping in fetuses with other abnormalities or a FL 2–4 SDs below the GA mean during the second trimester. Gene sequencing should be performed when FL is >4 SDs below the mean.
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Affiliation(s)
- Jialiu Liu
- Department of Obstetrics & Gynecology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Linhuan Huang
- Department of Obstetrics & Gynecology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Zhiming He
- Department of Obstetrics & Gynecology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Shaobin Lin
- Department of Obstetrics & Gynecology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Ye Wang
- Department of Obstetrics & Gynecology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Yanmin Luo
- Department of Obstetrics & Gynecology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China
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Li Q, Luo T, Lu W, Yi X, Zhao Z, Liu J. Proteomic analysis of human periodontal ligament cells under hypoxia. Proteome Sci 2019; 17:3. [PMID: 31496921 PMCID: PMC6717648 DOI: 10.1186/s12953-019-0151-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 08/20/2019] [Indexed: 02/05/2023] Open
Abstract
Background The periodontal ligament is essential for homeostasis of periodontal tissue. A hypoxic milieu of the periodontal tissue is generated under periodontitis or during orthodontic treatment, which affects the periodontal and bone remodelling process. Here, we provide a comprehensive proteomic characterization of periodontal ligament cells under hypoxic conditions, aiming to reveal previously unappreciated biological changes and to help advance hypoxia-based therapeutic strategies for periodontal diseases. Methods Human periodontal ligament cells (hPDLCs) were characterized using immunohistochemistry (IHC) and flow cytometry (FACS). Successful hypoxia treatment of hPDLCs with 1% O2 was confirmed by qRT-PCR. Proliferation was evaluated using an MTT assay. The proteomic expression profile under hypoxia was studied with the isobaric tags for relative and absolute quantification (iTRAQ) approach followed by protein identification and bioinformatic analysis, and western blot verification was performed. Results The hPDLCs were positive for vimentin, CD73 and CD105 and negative for keratin, CD34 and CD45. After hypoxia treatment, the mRNA expression of hypoxia-inducible factor 1a (HIF1a) was upregulated. The proliferation rate was elevated during the first 6 h but decreased from 6 h to 72 h. A total of 220 differentially expressed proteins were quantified in hPDLCs under hypoxia (1% O2, 24 h), including 153 upregulated and 67 downregulated proteins, five of which were verified by western blot analysis. The Gene Ontology enriched terms included the energy metabolic process, membrane-bound organelle and vesicle, and protein binding terms. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis indicated several involved pathways, including glycolysis/gluconeogenesis, biosynthesis of amino acids, the HIF-1 signalling pathway, and focal adhesion. A protein–protein interaction (PPI) network demonstrated the dominant role of autophagy over apoptosis under hypoxia. Conclusion The proteomic profile of hPDLCs under hypoxia was mainly related to energy metabolism, autophagy, and responses to stimuli such as adhesion and inflammation. Previously unrecognized proteins including solute carrier family proteins, heat shock proteins, ubiquitination-related enzymes, collagen and S100 family proteins are involved in adaptive response to hypoxia in hPDLCs and are thus of great research interest in future work. Electronic supplementary material The online version of this article (10.1186/s12953-019-0151-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Qiwen Li
- 1State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No.14, 3rd Section, South Renmin Road, Chengdu, 610041 China
| | - Tao Luo
- 1State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No.14, 3rd Section, South Renmin Road, Chengdu, 610041 China.,2Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Wenxin Lu
- 1State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No.14, 3rd Section, South Renmin Road, Chengdu, 610041 China.,3Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xiaoxiao Yi
- 1State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No.14, 3rd Section, South Renmin Road, Chengdu, 610041 China.,3Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zhihe Zhao
- 1State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No.14, 3rd Section, South Renmin Road, Chengdu, 610041 China.,3Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jun Liu
- 1State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No.14, 3rd Section, South Renmin Road, Chengdu, 610041 China.,3Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Liu Y, Wang L, Yang YK, Liang Y, Zhang TJ, Liang N, Yang LM, Li SJ, Shan D, Wu QQ. Prenatal diagnosis of fetal skeletal dysplasia using targeted next-generation sequencing: an analysis of 30 cases. Diagn Pathol 2019; 14:76. [PMID: 31299979 PMCID: PMC6626426 DOI: 10.1186/s13000-019-0853-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 07/03/2019] [Indexed: 12/12/2022] Open
Abstract
Background This study aims to provide genetic diagnoses for 30 cases of fetal skeletal dysplasia, and a molecular basis for the future prenatal diagnosis of fetal skeletal dysplasia. Methods A total of 30 cases of fetal skeletal dysplasia detected with ultrasound between January 2014 and June 2017 were analyzed. Among these fetuses, 15 fetuses had local skeletal malformations, while 15 fetuses had short limb malformations. Samples of fetal umbilical cord blood, amniotic fluid, and/or aborted tissue were collected from all cases. Karyotyping, whole genome sequencing, and targeted next-generation sequencing of skeletal disease-related pathogenic genes were performed, as needed. Blood samples were taken from the parents for verification using Sanger sequencing. Results Among the 30 cases of fetal skeletal dysplasia, two cases were diagnosed with trisomy 18. However, none of these cases were identified with any microdeletions or microreplications associated with skeletal dysplasia. Among the 28 chromosomally normal cases with fetal skeletal dysplasia, 21 cases were detected with mutations in genes related to skeletal diseases. Furthermore, collagen gene mutations were detected in six fetuses with short limb malformations, while heterozygous disease-causing mutations in the fibroblast growth factor receptor 3 (FGFR3) gene were detected in seven fetuses. The remaining fetuses carried mutations in other various genes, including tumor protein p63 (TP63), cholestenol delta-isomerase (EBP), cholinergic receptor nicotinic gamma subunit (CHRNG), filamin B (FLNB), and SRY-box 9 (SOX9). Three compound heterozygous mutations in CHRNG, COL11A2 and SOX9 were carried by phenotypically healthy parents. Conclusion Targeted next-generation sequencing can significantly improve the prenatal diagnoses of fetal skeletal dysplasia, providing parents with more precision medicine, and improved genetic counseling.
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Affiliation(s)
- Yan Liu
- Department of Obstetrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China
| | - Li Wang
- Department of Ultrasound, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China
| | - Yi-Ke Yang
- Department of Obstetrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China
| | - Ying Liang
- Department of Radiology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, No. 251 of Yaojia Yuan Street, Chaoyang District, Beijing, 100026, China
| | - Tie-Juan Zhang
- Department of Ultrasound, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China
| | - Na Liang
- Department of Ultrasound, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China
| | - Li-Man Yang
- Department of Ultrasound, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China
| | - Si-Jing Li
- Department of Ultrasound, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China
| | - Dan Shan
- Department of Obstetrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China
| | - Qing-Qing Wu
- Department of Ultrasound, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China.
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Lamandé SR, Bateman JF. Genetic Disorders of the Extracellular Matrix. Anat Rec (Hoboken) 2019; 303:1527-1542. [PMID: 30768852 PMCID: PMC7318566 DOI: 10.1002/ar.24086] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 10/26/2018] [Indexed: 12/11/2022]
Abstract
Mutations in the genes for extracellular matrix (ECM) components cause a wide range of genetic connective tissues disorders throughout the body. The elucidation of mutations and their correlation with pathology has been instrumental in understanding the roles of many ECM components. The pathological consequences of ECM protein mutations depend on its tissue distribution, tissue function, and on the nature of the mutation. The prevalent paradigm for the molecular pathology has been that there are two global mechanisms. First, mutations that reduce the production of ECM proteins impair matrix integrity largely due to quantitative ECM defects. Second, mutations altering protein structure may reduce protein secretion but also introduce dominant negative effects in ECM formation, structure and/or stability. Recent studies show that endoplasmic reticulum (ER) stress, caused by mutant misfolded ECM proteins, makes a significant contribution to the pathophysiology. This suggests that targeting ER‐stress may offer a new therapeutic strategy in a range of ECM disorders caused by protein misfolding mutations. Anat Rec, 2019. © 2019 The Authors. The Anatomical Record published by Wiley Periodicals, Inc. on behalf of American Association of Anatomists.
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Affiliation(s)
- Shireen R Lamandé
- Musculoskeletal Research, Murdoch Children's Research Institute, Royal Children's Hospital, Parkville Victoria, Australia.,Department of Paediatrics, University of Melbourne, Parkville Victoria, Australia
| | - John F Bateman
- Musculoskeletal Research, Murdoch Children's Research Institute, Royal Children's Hospital, Parkville Victoria, Australia.,Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville Victoria, Australia
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Savarirayan R, Bompadre V, Bober MB, Cho TJ, Goldberg MJ, Hoover-Fong J, Irving M, Kamps SE, Mackenzie WG, Raggio C, Spencer SS, White KK. Best practice guidelines regarding diagnosis and management of patients with type II collagen disorders. Genet Med 2019; 21:2070-2080. [PMID: 30696995 DOI: 10.1038/s41436-019-0446-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 01/16/2019] [Indexed: 11/09/2022] Open
Abstract
PURPOSE Skeletal dysplasias comprise a heterogeneous group of inherited disorders of development, growth, and maintenance of the human skeleton. Because of their relative rarity and wide phenotypic variability, patients should be accurately identified, uniformly assessed, and managed by clinicians who are aware of their potential complications and possess the knowledge and resources to treat them effectively. This study presents expert guidelines developed to improve the diagnosis and management of patients with type II collagen skeletal disorders to optimize clinical outcomes. METHODS A panel of 11 multidisciplinary international experts in the field of skeletal dysplasia participated in a Delphi process, which comprised analysis of a thorough literature review with subsequent generation of 26 diagnosis and care recommendations, followed by two rounds of anonymous voting with an intervening face-to-face meeting. Those recommendations with more than 80% agreement were considered as consensual. RESULTS After the first voting round, consensus was reached to support 12 of 26 (46%) statements. After the panel discussion, the group reached consensus on 22 of 24 revised statements (92%). CONCLUSIONS Consensus-based, expert best practice guidelines developed as a standard of care to assist accurate diagnosis, minimize associated health risks, and improve clinical outcomes for patients with type II collagen skeletal dysplasias.
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Affiliation(s)
- Ravi Savarirayan
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, University of Melbourne, VIC, Parkville, Australia.
| | - Viviana Bompadre
- Department of Orthopedics and Sports Medicine, Seattle Children's Hospital, Seattle, WA, USA
| | - Michael B Bober
- Division of Genetics, Nemours A.I. duPont Hospital for Children, Wilmington, DE, USA
| | - Tae-Joon Cho
- Division of Pediatric Orthopaedics, Seoul National University Children's Hospital, Seoul, South Korea
| | - Michael J Goldberg
- Department of Orthopedics and Sports Medicine, Seattle Children's Hospital, University of Washington, Seattle, WA, USA
| | - Julie Hoover-Fong
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Melita Irving
- Department of Clinical Genetics, Guy's and St Thomas NHS, London, UK
| | - Shawn E Kamps
- Department of Radiology, Seattle Children's Hospital, University of Washington, Seattle, WA, USA
| | - William G Mackenzie
- Department of Orthopedic Surgery, Nemours A.I. duPont Hospital for Children, Wilmington, DE, USA
| | - Cathleen Raggio
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Samantha S Spencer
- Department of Orthopedic Surgery, Boston Children's Hospital, Boston, MA, USA
| | - Klane K White
- Department of Orthopedics and Sports Medicine, Seattle Children's Hospital, University of Washington, Seattle, WA, USA
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Al Kaissi A, Ryabykh S, Pavlova OM, Ochirova P, Kenis V, Chehida FB, Ganger R, Grill F, Kircher SG. The Managment of cervical spine abnormalities in children with spondyloepiphyseal dysplasia congenita: Observational study. Medicine (Baltimore) 2019; 98:e13780. [PMID: 30608389 PMCID: PMC6344193 DOI: 10.1097/md.0000000000013780] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Spondyloepiphyseal dysplasia congenita (SEDC) is an autosomal dominant disorder, characterized by disproportionate dwarfism with short spine, short neck associated with variable degrees of coxa vara. Cervical cord compression is the most hazardous skeletal deformity in patients with SEDC which requires special attention and management.Ten patients with the clinical and the radiographic phenotypes of spondyloepiphyseal dysplasia congenita have been recognized and the genotype was compatible with single base substitutions, deletions or duplication of part of the COL2A1 gene (6 patients out of ten have been sequenced). Cervical spine radiographs showed apparent atlantoaxial instability in correlation with odontoid hypoplasia or os-odontoideum.Instability of 8 mm or more and or the presence of symptoms of myelopathy were the main indications for surgery. Posterior cervical fusion from the occiput or C1-3, decompression of C1-2 and application of autorib transfer followed by halo vest immobilization have been applied accordingly.Orthopedic management of children with spondyloepiphyseal dysplasia congenita (SEDC) should begin with the cervical spine to avoid serious neurological deficits and or mortality.
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Affiliation(s)
- Ali Al Kaissi
- Ludwig Boltzmann Institute of Osteology, Hanusch Hospital of WGKK and, AUVA TraumaCentre Meidling, First Medical Department, Hanusch Hospital
- Orthopaedic Hospital of Speising- Pediatric Department, Vienna, Austria
| | - Sergey Ryabykh
- Division Spine Pathology and Rare Diseases, Russian Scientific Ilizarov Center, Kurgan, Russia
| | - Olga M. Pavlova
- Division Spine Pathology and Rare Diseases, Russian Scientific Ilizarov Center, Kurgan, Russia
| | - Polina Ochirova
- Division Spine Pathology and Rare Diseases, Russian Scientific Ilizarov Center, Kurgan, Russia
| | - Vladimir Kenis
- Pediatric Orthopedic Institute n.a. H. Turner, Department of Foot and Ankle Surgery, Neuroorthopaedics and Systemic Disorders, Saint-Petersburg, Russia
| | | | - Rudolf Ganger
- Orthopaedic Hospital of Speising- Pediatric Department, Vienna, Austria
| | - Franz Grill
- Orthopaedic Hospital of Speising- Pediatric Department, Vienna, Austria
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Hu P, Yuan L, Deng H. Molecular genetics of the POMT1-related muscular dystrophy-dystroglycanopathies. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2018; 778:45-50. [PMID: 30454682 DOI: 10.1016/j.mrrev.2018.09.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 08/06/2018] [Accepted: 09/10/2018] [Indexed: 01/22/2023]
Abstract
Protein O-mannosyltransferase 1 (POMT1) is a critical enzyme participating in the first step of protein O-mannosylation. Mutations in the coding gene, POMT1, have been described to be related to a series of autosomal recessive disorders associated with defective alpha-dystroglycan glycosylation, later termed muscular dystrophy-dystroglycanopathies (MDDGs). MDDGs are characterized by a broad phenotypic spectrum of congenital muscular dystrophy or later-onset limb-girdle muscular dystrophy, accompanied by variable degrees of intellectual disability, brain defects, and ocular abnormalities. To date, at least 76 disease-associated mutations in the POMT1 gene, including missense, nonsense, splicing, deletion, insertion/duplication, and insertion-deletion mutations, have been reported in the literature. In this review, we highlight the present knowledge of the identified disease-associated POMT1 gene mutations and genetic animal models related to the POMT1 gene. This review may help further normative classification of phenotypes, assist in definite clinical and genetic diagnoses, and genetic counseling, and may comprehensively improve our understanding of the basis of complex phenotypes and possible pathogenic mechanisms involved.
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Affiliation(s)
- Pengzhi Hu
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, PR China; Department of Radiology, the Third Xiangya Hospital, Central South University, Changsha, PR China
| | - Lamei Yuan
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, PR China.
| | - Hao Deng
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, PR China.
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A novel de novo mutation in COL2A1 leading to spondyloepiphyseal dysplasia congenita in a Chinese family. Hum Genome Var 2018; 5:17059. [PMID: 29354277 PMCID: PMC5763142 DOI: 10.1038/hgv.2017.59] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 11/09/2017] [Accepted: 11/12/2017] [Indexed: 01/29/2023] Open
Abstract
Spondyloepiphyseal dysplasia congenita (SEDC) is an extremely rare autosomal dominant chondrodysplasia that is usually caused by substitution of glycine with another amino acid in the triple helical region of COL2A1. Herein, we describe a case of SEDC in a Chinese family with a novel de novo mutation in the COL2A1 gene, c.1150G>A (p.Gly384Ser), which may impair protein stability and lead to dysfunction of type II collagen.
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Lian C, Gao B, Wu Z, Qiu X, Peng Y, Liang A, Xu C, Su P, Huang D. Collagen type II is downregulated in the degenerative nucleus pulposus and contributes to the degeneration and apoptosis of human nucleus pulposus cells. Mol Med Rep 2017; 16:4730-4736. [PMID: 28791354 PMCID: PMC5647025 DOI: 10.3892/mmr.2017.7178] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 06/12/2017] [Indexed: 12/31/2022] Open
Abstract
Degenerative disc disease (DDD) is a common degenerative condition initiated mainly within the nucleus pulposus (NP). To date, the etiopathogenesis of DDD remains unclear, and because no effective therapeutic strategies are available to target its pathological processes, DDD is still treated with symptomatic interventions that are far from adequate. Collagen type II is one of the major matrix components of the NP, and is considered to be essential to NP homeostasis. However, the specific mechanisms by which collagen type II influences NP cells remain unknown. In the present study, collagen type II expression was detected using immunohistochemistry analysis and quantitative polymerase chain reaction, and it was demonstrated to be significantly downregulated in NP tissues from patients with DDD compared with nondegenerative controls. To further explore the mechanism in vitro, interleukin (IL)-1β stimulation was used to induce degeneration of a human NP cell line. IL-1β stimulation upregulated both the mRNA and protein levels of the catabolic markers matrix metalloproteinase 13 (MMP13) and a disintegrin and metalloproteinase with thrombospondin motifs 4 (ADAMTS4), while it downregulated the anabolic makers aggrecan and collagen type II. However, addition of purified collagen type II prevented this IL-1β-induced metabolic disturbance of the NP cells. Furthermore, IL-1β stimulation significantly promoted apoptosis in NP cells, while collagen type II treatment decreased the apoptotic rate and the protein levels of cleaved caspase-3. In conclusion, collagen type II exhibited protective effects in suppressing NP cell degeneration through its anticatabolic, proanabolic and antiapoptotic effects, suggesting that it may be a promising therapeutic agent for the prevention and treatment of DDD.
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Affiliation(s)
- Chengjie Lian
- Department of Orthopedics, Sun Yat‑sen Memorial Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Bo Gao
- Department of Orthopedics, Sun Yat‑sen Memorial Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Zizhao Wu
- Department of Orthopedics, Sun Yat‑sen Memorial Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Xianjian Qiu
- Department of Orthopedics, Sun Yat‑sen Memorial Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Yan Peng
- Department of Orthopedics, Sun Yat‑sen Memorial Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Anjing Liang
- Department of Orthopedics, Sun Yat‑sen Memorial Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Caixia Xu
- Research Centre for Translational Medicine, The First Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Peiqiang Su
- Department of Orthopedics, The First Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Dongsheng Huang
- Department of Orthopedics, Sun Yat‑sen Memorial Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510120, P.R. China
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Chen J, Ma X, Zhou Y, Li G, Guo Q. Recurrent c.G1636A (p.G546S) mutation of COL2A1 in a Chinese family with skeletal dysplasia and different metaphyseal changes: a case report. BMC Pediatr 2017; 17:175. [PMID: 28738883 PMCID: PMC5525314 DOI: 10.1186/s12887-017-0930-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 07/20/2017] [Indexed: 11/22/2022] Open
Abstract
Background Mutations in the COL2A1 gene cause type II collagenopathies characterized by skeletal dysplasia with a wide spectrum of phenotypic severity. Most COL2A1 mutations located in the triple-helical region, and the glycine to bulky amino acid substitutions (e.g., glycine to serine) in the Gly-X-Y repeat were identified frequently. However, the same COL2A1 mutations are associated with different phenotypes and the genotype-phenotype relationship is still poorly understood. Therefore, the studies of more patients about the recurrent mutations in COL2A1 will be needed for further research to provide more comprehensive clinical and genetic data. In this paper, we report a rare recurrent c.G1636A (p.G546S) mutation in COL2A1 associated with different metaphyseal changes in a Chinese family. Case presentation The proband (III-3) was the second child of the family with skeletal dysplasia. She was 2 years and 3 months old with disproportional short stature, short neck, pectus carinatum, genu varum, bilateral pes planus, and obvious waddling gait. Notably, she displayed severe metaphyseal lesions, especially typical “dappling” and “corner fracture” appearance, whereas no particular metaphyseal involvement was detected in the proband’s mother (II-3) and elder sister (III-2) in the family. We identified a heterozygous mutation (c.1636G > A) in COL2A1 in the three patients, causing the substitution of glycine to serine in codon 546. Although the same mutation has been reported in two previous studies, the phenotypes of the previous patients were different from those of our patients, and the characteristic “dappling” and “corner fracture” metaphyseal abnormalities were not reported previously. Conclusions In this study, we identified a c.G1636A (p.G546S) mutation in the COL2A1 associated with different metaphyseal changes, which was never reported in the literature. Our findings revealed a different causative amino acid substitution (glycine to serine) associated with the “dappling” and “corner fracture” metaphyseal abnormalities, and may provide a useful reference for evaluating the phenotypic spectrum and variability of type II collagenopathies.
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Affiliation(s)
- Jing Chen
- United Diagnostic and Research Center for Clinical Genetics, School of Public Health of Xiamen University & Xiamen Maternal and Child Health Hospital, Xiamen, Fujian, China.,Department of Child Health, Maternal and Child Health Hospital, Xiamen, Fujian, China
| | - Xiaomin Ma
- Department of Radiology, Maternal and Child Health Care Hospital, Xiamen, Fujian, China
| | - Yulin Zhou
- United Diagnostic and Research Center for Clinical Genetics, School of Public Health of Xiamen University & Xiamen Maternal and Child Health Hospital, Xiamen, Fujian, China
| | - Guimei Li
- Department of Pediatrics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.
| | - Qiwei Guo
- United Diagnostic and Research Center for Clinical Genetics, School of Public Health of Xiamen University & Xiamen Maternal and Child Health Hospital, Xiamen, Fujian, China.
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