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Huybrechts Y, De Ridder R, Steenackers E, Devogelaer JP, Mortier G, Hendrickx G, Van Hul W. Genetic Screening of ZNF687 and PFN1 in a Paget's Disease of Bone Cohort Indicates an Important Role for the Nuclear Localization Signal of ZNF687. Calcif Tissue Int 2023; 113:552-557. [PMID: 37728743 DOI: 10.1007/s00223-023-01137-5] [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: 07/19/2023] [Accepted: 08/31/2023] [Indexed: 09/21/2023]
Abstract
Paget's disease of bone (PDB) is a common, late-onset bone disorder, characterized by focal increases of bone turnover that can result in bone lesions. Heterozygous pathogenic variants in the Sequestosome 1 (SQSTM1) gene are found to be the main genetic cause of PDB. More recently, PFN1 and ZNF687 have been identified as causal genes in patients with a severe, early-onset, polyostotic form of PDB, and an increased likelihood to develop giant cell tumors. In our study, we screened the coding regions of PFN1 and ZNF687 in a Belgian PDB cohort (n = 188). In the PFN1 gene, no variants could be identified, supporting the observation that variants in this gene are extremely rare in PDB. However, we identified 3 non-synonymous coding variants in ZNF687. Interestingly, two of these rare variants (p.Pro937His and p.Arg939Cys) were clustering in the nuclear localization signal of the encoded ZNF687 protein, also harboring the p.Pro937Arg variant, a previously reported disease-causing variant. In conclusion, our findings support the involvement of genetic variation in ZNF687 in the pathogenesis of classical PDB, thereby expanding its mutational spectrum.
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Affiliation(s)
- Yentl Huybrechts
- Center of Medical Genetics, University of Antwerp and University Hospital Antwerp, Antwerp, Belgium
| | - Raphaël De Ridder
- Center of Medical Genetics, University of Antwerp and University Hospital Antwerp, Antwerp, Belgium
| | - Ellen Steenackers
- Center of Medical Genetics, University of Antwerp and University Hospital Antwerp, Antwerp, Belgium
| | - Jean-Pierre Devogelaer
- Department of Rheumatology, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium
| | - Geert Mortier
- Laboratory for Skeletal Dysplasia Research, Department of Human Genetics, KU Leuven and University Hospital Leuven, Louvain, Belgium
| | - Gretl Hendrickx
- Laboratory for Skeletal Dysplasia Research, Department of Human Genetics, KU Leuven and University Hospital Leuven, Louvain, Belgium
| | - Wim Van Hul
- Center of Medical Genetics, University of Antwerp and University Hospital Antwerp, Antwerp, Belgium.
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Ling Z, Aini H, Kajikawa S, Shirakawa J, Tsuji K, Asou Y, Koga H, Sekiya I, Nifuji A, Noda M, Ezura Y. Osteolytic Bone Loss and Skeletal Deformities in a Mouse Model for Early-Onset Paget's Disease of Bone with PFN1 Mutation Are Treatable by Alendronate. Pharmaceuticals (Basel) 2023; 16:1395. [PMID: 37895866 PMCID: PMC10610320 DOI: 10.3390/ph16101395] [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: 08/31/2023] [Revised: 09/22/2023] [Accepted: 09/27/2023] [Indexed: 10/29/2023] Open
Abstract
A novel osteolytic disorder due to PFN1 mutation was discovered recently as early-onset Paget's disease of bone (PDB). Bone loss and pain in adult PDB patients have been treated using bisphosphonates. However, therapeutic strategies for this specific disorder have not been established. Here, we evaluated the efficiency of alendronate (ALN) on a mutant mouse line, recapitulating this disorder. Five-week-old conditional osteoclast-specific Pfn1-deficient mice (Pfn1-cKOOCL) and control littermates (33 females and 22 males) were injected with ALN (0.1 mg/kg) or vehicle twice weekly until 8 weeks of age. After euthanizing, bone histomorphometric parameters and skeletal deformities were analyzed using 3D μCT images and histological sections. Three weeks of ALN administration significantly improved bone mass at the distal femur, L3 vertebra, and nose in Pfn1-cKOOCL mice. Histologically increased osteoclasts with expanded distribution in the distal femur were normalized in these mice. Geometric bone shape analysis revealed a partial recovery from the distal femur deformity. A therapeutic dose of ALN from 5 to 8 weeks of age significantly improved systemic bone loss in Pfn1-cKOOCL mice and femoral bone deformity. Our study suggests that preventive treatment of bony deformity in early-onset PDB is feasible.
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Affiliation(s)
- Zhu Ling
- Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University (TMDU), Tokyo 170-8455, Japan; (Z.L.)
| | - Hailati Aini
- Department of Nano-Bioscience, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan
| | - Shuhei Kajikawa
- Department of Veterinary Medicine, Okayama University of Science, Imabari 794-8555, Japan
| | - Jumpei Shirakawa
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, University of Miyazaki, Kiyotake, Miyazaki 889-1692, Japan
| | - Kunikazu Tsuji
- Department of Nano-Bioscience, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan
- Department of Orthopedic Surgery, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan
| | - Yoshinori Asou
- Department of Nano-Bioscience, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan
- Department of Orthopedic Surgery, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University (TMDU), Tokyo 170-8455, Japan; (Z.L.)
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan
| | - Akira Nifuji
- Department of Pharmacology, Tsurumi University School of Dental Medicine, Tsurumi, Yokohama 230-8501, Japan
| | - Masaki Noda
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan
| | - Yoichi Ezura
- Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University (TMDU), Tokyo 170-8455, Japan; (Z.L.)
- Faculty of Occupational Therapy, Teikyo Heisei University, Tokyo 170-8445, Japan
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Wu Y, Wu S, Yang E, Zhang G, Shi Q, Liang J, Lian X, Xu J. Association of PFN1 Gene Polymorphisms with Bone Mineral Density, Bone Turnover Markers, and Osteoporotic Fractures in Chinese Population. Calcif Tissue Int 2023; 113:207-215. [PMID: 37401976 DOI: 10.1007/s00223-023-01102-2] [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: 02/13/2023] [Accepted: 05/24/2023] [Indexed: 07/05/2023]
Abstract
Recent studies have discovered an association between the PFN1 gene and Paget's disease. However, it is currently unknown whether the PFN1 gene is related to osteoporosis. This study was performed to investigate the association of Single-Nucleotide Polymorphisms (SNPs) in the PFN1 gene with Bone Mineral Density (BMD) as well as bone turnover markers and osteoporotic fractures in Chinese subjects. A total of 2836 unrelated Chinese subjects comprising 1247 healthy subjects and 1589 osteoporotic fractures patients (Fracture group) were enrolled in this study. Seven tagSNPs (rs117337116, rs238243, rs6559, rs238242, rs78224458, rs4790714, and rs13204) of the PFN1 gene were genotyped. The BMD of the lumbar spine 1-4 (L1-4), femoral neck, and total hip as well as bone turnover markers, such as β-C-Terminal telopeptide of type 1 collagen (β-CTX) and Procollagen type 1 N-terminal Propeptide (P1NP), were measured. The association between 7 tagSNPs and BMD and bone turnover markers was analyzed in 1247 healthy subjects only. After age matching, we selected 1589 osteoporotic fracture patients (Fracture group) and 756 nonfracture controls (Control group, selected from 1247 healthy subjects) for a case-control study, respectively. For the case-control study, we used logistic regression to investigate the relationship between 7 tagSNPs and osteoporotic fractures risk. In the All group, the PFN1 haplotype GAT was associated with the β-CTX (P = 0.007). In the Female group, the PFN1 haplotype GAT was associated with the β-CTX (P = 0.005). In the Male group, the rs13204, the rs78224458, and the PFN1 haplotype GAC were associated with the BMD of the L1-4 (all P = 0.012); the rs13204, the rs78224458, and the PFN1 haplotype GAC were associated with the BMD of the femoral neck (all P = 0.012); the rs13204 and rs78224458 were associated with the BMD of the total hip (both P = 0.015); and the PFN1 haplotype GAT was associated with the β-CTX (P = 0.013). In the subsequent case-control study, the rs13204 and rs78224458 in the male group were associated with the risk of L1-4 fracture (P = 0.016 and 0.010, respectively) and total hip fracture (P = 0.013 and 0.016, respectively). Our study reveals that PFN1 gene polymorphisms are associated with BMD in Chinese males and β-CTX in Chinese people and confirmed the relationship between PFN1 gene polymorphisms and Chinese male osteoporotic fractures in a case-control study.
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Affiliation(s)
- Yinghao Wu
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, People's Republic of China
| | - Shengting Wu
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, People's Republic of China
| | - Erzhu Yang
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, People's Republic of China
| | - Guowang Zhang
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, People's Republic of China
| | - Qiang Shi
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, People's Republic of China
| | - Jiaming Liang
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, People's Republic of China
| | - XiaoFeng Lian
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, People's Republic of China.
| | - JianGuang Xu
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, People's Republic of China.
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Assessing the Role of Ancestral Fragments and Selection Signatures by Whole-Genome Scanning in Dehong Humped Cattle at the China-Myanmar Border. BIOLOGY 2022; 11:biology11091331. [PMID: 36138810 PMCID: PMC9495559 DOI: 10.3390/biology11091331] [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: 07/30/2022] [Revised: 08/31/2022] [Accepted: 09/04/2022] [Indexed: 12/05/2022]
Abstract
Dehong humped cattle are precious livestock resources of Yunnan Province, China; they have typical zebu traits. Here, we investigated their genetic characteristics using whole-genome resequencing data of Dehong humped animals (n = 18). When comparing our data with the publicly-available data, we found that Dehong humped cattle have high nucleotide diversity. Based on clustering models in a population structure analysis, Dehong humped cattle had a mutual genome ancestor with Chinese and Indian indicine cattle. While using the RFMix method, it is speculated that the body sizes of Dehong humped cattle were influenced by the Chinese indicine segments and that the immune systems of Dehong humped cattle were affected by additional ancestral segments (Indian indicine). Furthermore, we explored the position selection regions harboring genes in the Dehong humped cattle, which were related to heat tolerance (FILIP1L, ABHD6) and immune responses (GZMM, PRKCZ, STOML2, LRBA, PIK3CD). Notably, missense mutations were detected in the candidate gene ABHD6 (c.870C>A p.Asp290Glu; c.987C>A p.Ser329Arg). The missense mutations may have implications for Dehong humped cattle adaptation to hot environments. This study provides valuable genomic resource data at the genome-wide level and paves the way for future genetic breeding work in the Dehong humped cattle.
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Gennari L, Rendina D, Merlotti D, Cavati G, Mingiano C, Cosso R, Materozzi M, Pirrotta F, Abate V, Calabrese M, Falchetti A. Update on the pathogenesis and genetics of Paget’s disease of bone. Front Cell Dev Biol 2022; 10:932065. [PMID: 36035996 PMCID: PMC9412102 DOI: 10.3389/fcell.2022.932065] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 07/25/2022] [Indexed: 11/24/2022] Open
Abstract
Studies over the past two decades have led to major advances in the pathogenesis of Paget’s disease of bone (PDB) and particularly on the role of genetic factors. Germline mutations of different genes have been identified, as a possible cause of this disorder, and most of the underlying pathways are implicated in the regulation of osteoclast differentiation and function, whereas other are involved in cell autophagy mechanisms. In particular, about 30 different germline mutations of the Sequestosome 1 gene (SQSTM1) have been described in a significant proportion of familial and sporadic PDB cases. The majority of SQSTM1 mutations affect the ubiquitin-binding domain of the protein and are associated to a more severe clinical expression of the disease. Also, germline mutations in the ZNF687 and PFN1 genes have been associated to severe, early onset, polyostotic PDB with increased susceptibly to neoplastic degeneration, particularly giant cell tumor. Mutations in the VCP (Valosin Containing Protein) gene cause the autosomal dominant syndrome “Inclusion Body Myopathy, PDB, Fronto-temporal Dementia,” characterized by pagetic manifestations, associated with myopathy, amyotrophic lateral sclerosis and fronto-temporal dementia. Moreover, germline mutations in the TNFRSF11A gene, which encodes for RANK, were associated with rare syndromes showing some histopathological, radiological, and clinical overlap with PDB and in two cases of early onset PDB-like disease. Likewise, genome wide association studies performed in unrelated PDB cases identified other potential predisposition genes and/or susceptibility loci. Thus, it is likely that polygenic factors are involved in the PDB pathogenesis in many individuals and that modifying genes may contribute in refining the clinical phenotype. Moreover, the contribution of somatic mutations of SQSTM1 gene and/or epigenetic mechanisms in the pathogenesis of skeletal pagetic abnormalities and eventually neoplastic degeneration, cannot be excluded. Indeed, clinical and experimental observations indicate that genetic susceptibility might not be a sufficient condition for the clinical development of PDB without the concomitant intervention of viral infection, in primis paramixoviruses, and/or other environmental factors (e.g., pesticides, heavy metals or tobacco exposure), at least in a subset of cases. This review summarizes the most important advances that have been made in the field of cellular and molecular biology PDB over the past decades.
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Affiliation(s)
- Luigi Gennari
- Department of Medicine Surgery and Neurosciences, University of Siena Italy, Siena, Italy
- *Correspondence: Luigi Gennari, ; Alberto Falchetti,
| | - Domenico Rendina
- Department of Clinical Medicine and Surgery, Federico II University, Naples, Italy
| | - Daniela Merlotti
- Department of Medical Sciences, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | - Guido Cavati
- Department of Medicine Surgery and Neurosciences, University of Siena Italy, Siena, Italy
| | - Christian Mingiano
- Department of Medicine Surgery and Neurosciences, University of Siena Italy, Siena, Italy
| | - Roberta Cosso
- Unit of Rehabilitation Medicine, San Giuseppe Hospital, Istituto Auxologico Italiano, Piancavallo, Italy
| | - Maria Materozzi
- Department of Medicine Surgery and Neurosciences, University of Siena Italy, Siena, Italy
- Age Related Diseases Unit, Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milano, Italy
| | - Filippo Pirrotta
- Department of Medicine Surgery and Neurosciences, University of Siena Italy, Siena, Italy
| | - Veronica Abate
- Department of Clinical Medicine and Surgery, Federico II University, Naples, Italy
| | - Marco Calabrese
- Department of Medicine Surgery and Neurosciences, University of Siena Italy, Siena, Italy
| | - Alberto Falchetti
- Experimental Research Laboratory on Bone Metabolism, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Istituto Auxologico Italiano, Milano, Italy
- *Correspondence: Luigi Gennari, ; Alberto Falchetti,
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Kajikawa S, Ezura Y, Izu Y, Nakashima K, Noda M, Nifuji A. Profilin-1 negatively controls osteoclast migration by suppressing the protrusive structures based on branched actin filaments. J Bone Miner Metab 2022; 40:561-570. [PMID: 35428898 DOI: 10.1007/s00774-022-01320-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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 02/21/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Profilin-1 (Pfn1), an evolutionarily conserved actin-binding protein, is an important regulator of the cytoskeleton. We previously reported the osteoclast-specific Pfn1-conditional knockout (cKO) mice had postnatal osteolytic phenotype with craniofacial and long-bone deformities associated with increased migration of cultured osteoclasts. We hypothesized the increased cellular processes structured with branched actin filaments may underlies the mechanism of increased bone resorption in these mutant mice. MATERIALS AND METHODS The morphological structure and cell migration of the cultured osteoclasts were analyzed using fluorescent microscopy and time-lapse image capturing. Fractional migration distances, as well as the index of protrusive structures (%-PB) that evaluates relative border length of the protrusion were compared between the cells from control and Pfn1-cKO mice. RESULTS Time-lapse image analysis showed that %-PB was significantly larger in Pfn1-cKO osteoclasts. In addition, the fractional migration distance was positively correlated with the index. When the branched actin filament organization was suppressed by chemical inhibitors, the osteoclast migration was declined. Importantly, the suppression was more extensive in Pfn1-cKO than in control osteoclasts. CONCLUSION Our results indicated the causative involvement of the increased branched actin filament formation at least in part for their excessive migration. Our findings provide a mechanistic rationale for testing novel therapeutic approaches targeting branched actin filaments in osteolytic disorders.
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Affiliation(s)
- Shuhei Kajikawa
- Department of Veterinary Medicine, The Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime, 794-8555, Japan
| | - Yoichi Ezura
- Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University (TMDU), Tokyo, 113-8510, Japan.
- Department of Occupational Therapy, Faculty of Health and Medical Sciences, Teikyo Heisei University, Tokyo, 170-0013, Japan.
| | - Yayoi Izu
- Department of Veterinary Medicine, The Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime, 794-8555, Japan
| | - Kazuhisa Nakashima
- Department of Pharmacology, Tsurumi University School of Dental Medicine, Tsurumi, Kanagawa, 230-8501, Japan
| | - Masaki Noda
- Department of Orthopedics, TMDU, Tokyo, 113-8510, Japan
- Center for Stem Cell and Regenerative Medicine, TMDU, Tokyo, 113-8510, Japan
| | - Akira Nifuji
- Department of Pharmacology, Tsurumi University School of Dental Medicine, Tsurumi, Kanagawa, 230-8501, Japan
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Zhao J, Liu L, Lv S, Wang C, Yue H, Zhang Z. PFN1 Gene Polymorphisms and the Bone Mineral Density Response to Alendronate Therapy in Postmenopausal Chinese Women with Low Bone Mass. Pharmgenomics Pers Med 2022; 14:1669-1678. [PMID: 34992429 PMCID: PMC8711734 DOI: 10.2147/pgpm.s344818] [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: 10/21/2021] [Accepted: 12/15/2021] [Indexed: 11/23/2022] Open
Abstract
Purpose Alendronate is a widely used anti-osteoporotic drug. PFN1 gene is a newly identified early-onset Paget’s disease pathogenic gene. The purpose of this study is to study whether the genetic variations in this gene affect the clinical efficacy of alendronate in postmenopausal Chinese women with low bone mass. Patients and Methods Seven single nucleotide polymorphisms in PFN1 gene were genotyped. A total of 500 postmenopausal women with osteoporosis or osteopenia were included. All participants were treated with weekly alendronate 70 mg for 12 months. A total of 466 subjects completed the follow-up. Bone mineral density (BMD) of lumbar spine, femoral neck and total hip were measured at baseline and after treatment. Results After 12 months of treatment, the BMD of lumbar spine, femoral neck and total hip all increased significantly (all P < 0.001), with an average increase of 4.72 ± 5.31%, 2.08 ± 4.45%, and 2.42 ± 3.46%, respectively. At baseline, there were no significant differences in BMD at lumbar spine, femoral neck and total hip between different genotype groups (P > 0.05). We failed to identify any significant association between the genotypes or haplotypes of PFN1 and the BMD response to alendronate therapy. Conclusion Genetic polymorphisms of PFN1 may not be a major contributor to the therapeutic response to alendronate treatment in Chinese women with low bone mass.
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Affiliation(s)
- Jiao Zhao
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Disease, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, People's Republic of China
| | - Li Liu
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Disease, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, People's Republic of China
| | - Shanshan Lv
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Disease, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, People's Republic of China
| | - Chun Wang
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Disease, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, People's Republic of China
| | - Hua Yue
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Disease, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, People's Republic of China
| | - Zhenlin Zhang
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Disease, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, People's Republic of China
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Wei Z, Li S, Tao X, Zhu G, Sun Z, Wei Z, Jiao Q, Zhang H, Chen L, Li B, Zhang Z, Yue H. Mutations in Profilin 1 Cause Early-Onset Paget's Disease of Bone With Giant Cell Tumors. J Bone Miner Res 2021; 36:1088-1103. [PMID: 33599011 PMCID: PMC8251538 DOI: 10.1002/jbmr.4275] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 02/02/2021] [Accepted: 02/14/2021] [Indexed: 12/24/2022]
Abstract
Paget's disease of bone (PDB) is a late-onset chronic progressive bone disease characterized by abnormal activation of osteoclasts that results in bone pain, deformities, and fractures. PDB is very rare in Asia. A subset of PDB patients have early onset and can develop malignant giant cell tumors (GCTs) of the bone (PDB/GCTs), which arise within Paget bone lesions; the result is a significantly higher mortality rate. SQSTM1, TNFRSF11A, OPG, VCP, and HNRNPA2B1 have been identified as pathogenic genes of PDB, and ZNF687 is the only confirmed gene to date known to cause PDB/GCT. However, the molecular mechanism underlying PDB/GCT has not been fully elucidated. Here, we investigate an extended Chinese pedigree with eight individuals affected by early-onset and polyostotic PDB, two of whom developed GCTs. We identified a heterozygous 4-bp deletion in the Profilin 1 (PFN1) gene (c.318_321delTGAC) by genetic linkage analysis and exome sequencing for the family. Sanger sequencing revealed another heterozygous 1-bp deletion in PFN1 (c.324_324delG) in a sporadic early-onset PDB/GCT patient, further proving its causative role. Interestingly, a heterozygous missense mutation of PFN1 (c.335 T > C) was identified in another PDB/GCT family, revealing that not only deletion but also missense mutations in PFN1 can cause PDB/GCT. Furthermore, we established a Pfn1-mutated mouse model (C57BL/6J mice) and successfully obtained Pagetic phenotypes in heterozygous mice, verifying loss of function of PFN1 as the cause of PDB/GCT development. In conclusion, our findings reveal mutations in PFN1 as the pathological mechanism in PDB/GCT, and we successfully established Pfn1-mutated mice as a suitable animal model for studying PDB-associated pathological mechanisms. The identification of PFN1 mutations has great diagnostic value for identifying PDB individuals predisposed toward developing GCTs. © 2021 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Zhe Wei
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Shanshan Li
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Xiaohui Tao
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Guoying Zhu
- Department of Radiation Health, Institute of Radiation Medicine, Fudan University, Shanghai, China
| | - Zhenkui Sun
- Department of Nuclear Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Zhanying Wei
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Qiong Jiao
- Department of Pathology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Huizhen Zhang
- Department of Pathology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Lin Chen
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Daping Hospital, Army Medical University, Chongqing, China
| | - Baojie Li
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, Ministry of Education, Shanghai, China
| | - Zhenlin Zhang
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Hua Yue
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
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Scotto di Carlo F, Pazzaglia L, Esposito T, Gianfrancesco F. The Loss of Profilin 1 Causes Early Onset Paget's Disease of Bone. J Bone Miner Res 2020; 35:1387-1398. [PMID: 31991009 DOI: 10.1002/jbmr.3964] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 01/12/2020] [Accepted: 01/19/2020] [Indexed: 11/07/2022]
Abstract
Paget's disease of bone (PDB) is a late-onset disorder frequently caused by mutations in the SQSTM1 gene, leading to hyperactive osteoclasts and resulting in bone pain, deformities, and fractures. However, some more severe forms of PDB-negative for SQSTM1 mutations-have been described, in which the disease degenerates into bone cancers and shows a poor prognosis. Osteosarcoma is the most frequent and aggressive tumor arising in PDB (OS/PDB), with a 5-year survival rate almost nil, but the underlying molecular mechanism is unknown. Here, we investigated an extended pedigree with 11 individuals affected by early onset and polyostotic PDB, mainly interesting the appendicular skeleton. Interestingly, three members also developed secondary osteosarcoma. We performed exome sequencing and identified a 4-bp deletion in the PFN1 gene, resulting in the degradation of the mutant protein. Copy number screening on 218 PDB individuals of our biobank disclosed that four of them (~2%) carry a germline heterozygous deletion of PFN1. The identification of these subjects, who exhibit a particularly severe form of disease, emphasizes the diagnostic value of this genetic screening to identify PDB individuals predisposed to develop osteosarcoma. In fact, we detected allelic imbalance at PFN1 locus also in 8 of 14 (57%) sporadic OS/PDB, further proving its causative role. in vitro experiments also confirmed PFN1 involvement in this form of PDB. Indeed, CRISPR-Cas9-mediated Pfn1 knockout in pre-osteoclasts resulted into enhanced osteoclast differentiation and resorption, with the formation of large osteoclasts never described before in PDB. In addition, Pfn1 lacking pre-osteoblasts lost their differentiation capability and failed to efficiently mineralize bone. Moreover, they acquired features of malignant transformation, including loss of focal adhesions and increased invasion ability. In conclusion, these findings disclose PFN1 haploinsufficiency as the pathological mechanism in OS/PDB. © 2020 American Society for Bone and Mineral Research.
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Affiliation(s)
- Federica Scotto di Carlo
- Institute of Genetics and Biophysics "Adriano Buzzati-Traverso", National Research Council of Italy, Naples, Italy
| | - Laura Pazzaglia
- IRCCS Istituto Ortopedico Rizzoli, Laboratory of Experimental Oncology, Bologna, Italy
| | - Teresa Esposito
- Institute of Genetics and Biophysics "Adriano Buzzati-Traverso", National Research Council of Italy, Naples, Italy
- IRCCS INM Neuromed, Pozzilli, Italy
| | - Fernando Gianfrancesco
- Institute of Genetics and Biophysics "Adriano Buzzati-Traverso", National Research Council of Italy, Naples, Italy
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Merlotti D, Materozzi M, Bianciardi S, Guarnieri V, Rendina D, Volterrani L, Bellan C, Mingiano C, Picchioni T, Frosali A, Orfanelli U, Cenci S, Gennari L. Mutation of PFN1 Gene in an Early Onset, Polyostotic Paget-like Disease. J Clin Endocrinol Metab 2020; 105:5835857. [PMID: 32392277 DOI: 10.1210/clinem/dgaa252] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 05/05/2020] [Indexed: 12/11/2022]
Abstract
CONTEXT Paget disease of bone (PDB) is a metabolic bone disease whose genetic cause remains unknown in up to 50% of familial patients. OBJECTIVE Our aim was to investigate the underlying genetic defect in a large pedigree with a severe, early onset, autosomal dominant form of PDB across 3 generations. METHODS Whole exome sequencing was performed in affected and unaffected family members, and then mutation screening was replicated in a sample of PDB patients with early-onset, polyostotic PDB. RESULTS We identified a frameshift D107Rfs*3 mutation in PFN1 (encoding for profilin 1, a highly conserved regulator of actin-polymerization and cell motility) causing the truncation of the C-terminal part of the protein. The mutation was also detected in a 17-year-old asymptomatic family member who upon biochemical and radiological analyses was indeed found to be affected. Sequencing of the entire PFN1 coding region in unrelated PDB patients identified the same mutation in 1 patient. All mutation carriers had a reduced response to bisphosphonates, requiring multiple zoledronate infusions to control bone pain and achieve biochemical remission over a long term. In vitro osteoclastogenesis in peripheral blood mononuclear cells (PBMCs) from mutation carriers showed a higher number of osteoclasts with PDB-like features. A similar phenotype was observed upon PFN1 silencing in murine bone marrow-derived monocytes, suggesting that the frameshift PFN1 mutation confers a loss of function in profilin 1 activity that induces PDB-like features in the osteoclasts, likely due to enhanced cell motility and actin ring formation. CONCLUSIONS Our findings indicate that PFN1 mutation causes an early onset, polyostotic PDB-like disorder.
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Affiliation(s)
- Daniela Merlotti
- Department of Medicine, Surgery and Neurosciences, University of Siena, Italy
| | - Maria Materozzi
- Department of Medicine, Surgery and Neurosciences, University of Siena, Italy
- Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milan, Italy
| | - Simone Bianciardi
- Department of Medicine, Surgery and Neurosciences, University of Siena, Italy
| | - Vito Guarnieri
- Medical Genetics Service, IRCCS "Casa Sollievo della Sofferenza" Hospital, San Giovanni Rotondo (FG), Italy
| | - Domenico Rendina
- Department of Clinical and Surgical Sciences, Federico II University Medical School, Naples, Italy
| | - Luca Volterrani
- Department of Medicine, Surgery and Neurosciences, University of Siena, Italy
| | - Cristiana Bellan
- Department of Medical Biotechnologies, University of Siena, Italy
| | - Christian Mingiano
- Department of Medicine, Surgery and Neurosciences, University of Siena, Italy
| | - Tommaso Picchioni
- Department of Medicine, Surgery and Neurosciences, University of Siena, Italy
| | - Alessandro Frosali
- Department of Medicine, Surgery and Neurosciences, University of Siena, Italy
| | - Ugo Orfanelli
- Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milan, Italy
| | - Simone Cenci
- Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milan, Italy
| | - Luigi Gennari
- Department of Medicine, Surgery and Neurosciences, University of Siena, Italy
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