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Ito S, Nakashima H, Segi N, Ouchida J, Oishi R, Yamauchi I, Miyairi Y, Morita Y, Ode Y, Imagama S. Ten-Year Follow-up of Posterior Decompression and Fusion Surgery for Thoracic Ossification of the Posterior Longitudinal Ligament. J Bone Joint Surg Am 2024; 106:1600-1609. [PMID: 39102467 DOI: 10.2106/jbjs.23.01475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
BACKGROUND We evaluated the clinical, functional, and quality of life (QoL) outcomes of surgical treatment of thoracic ossification of the posterior longitudinal ligament (T-OPLL). METHODS We retrospectively evaluated 51 patients followed for ≥10 years after posterior decompression and corrective fusion surgery for T-OPLL. The data collected included demographics, comorbidities, and pre- and postoperative symptoms. The Japanese Orthopaedic Association (JOA) score, numerical rating scale (NRS) for back and leg pain, and EuroQol-5 Dimension-5 Level (EQ-5D-5L) were used to assess neurological function, pain, and QoL. Imaging evaluations were conducted to assess changes in kyphotic angles and ossification progression. RESULTS A significant improvement was observed in the JOA score from preoperatively (3.7) to 2 years postoperatively (7.9) (p < 0.05); the score remained stable thereafter. The mean EQ-5D-5L score improved from 0.53 preoperatively to 0.68 at 10 years postoperatively (p < 0.001). NRS scores for back and leg pain decreased from 5.4 to 3.5 and 4.0 to 3.0, respectively, from preoperatively to 10 years (p < 0.001 for both). Radiographic outcomes showed changes in kyphotic angles and ossification areas, with no significant progression after 2 years. Fourteen (27.5%) of the patients experienced postoperative complications. Of these, 8 (15.7%) required reoperation, 6 (11.8%) in the perioperative period and 2 (3.9%) later. Four (7.8%) of the patients underwent additional surgeries for conditions including lumbar spinal canal stenosis and cervical OPLL. Nonetheless, physical function in all cases with postoperative complications or additional surgery remained stable over the decade. CONCLUSIONS Surgical treatment of T-OPLL is effective in improving neurological function, QoL, and pain management over an extended period. The long-term outcomes of T-OPLL surgery revealed that, although cervical and lumbar spinal lesions led to reoperations, they did not affect QoL, and relative improvement was maintained even after 10 years. LEVEL OF EVIDENCE Therapeutic Level IV . See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Sadayuki Ito
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
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Li L, Zheng ZZ, Jiang JJ, Chen JL, Jiang B, Li YW, Dai YL, Wang B. CTSD upregulation as a key driver of spinal ligament abnormalities in spinal stenosis. Bone 2024; 186:117174. [PMID: 38917962 DOI: 10.1016/j.bone.2024.117174] [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: 02/04/2024] [Revised: 05/25/2024] [Accepted: 06/18/2024] [Indexed: 06/27/2024]
Abstract
Spinal stenosis (SS) is frequently caused by spinal ligament abnormalities, such as ossification and hypertrophy, which narrow the spinal canal and compress the spinal cord or nerve roots, leading to myelopathy or sciatic symptoms; however, the underlying pathological mechanism is poorly understood, hampering the development of effective nonsurgical treatments. Our study aims to investigate the role of co-expression hub genes in patients with spinal ligament ossification and hypertrophy. To achieve this, we conducted an integrated analysis by combining RNA-seq data of ossification of the posterior longitudinal ligament (OPLL) and microarray profiles of hypertrophy of the ligamentum flavum (HLF), consistently pinpointing CTSD as an upregulated hub gene in both OPLL and HLF. Subsequent RT-qPCR and IHC assessments confirmed the heightened expression of CTSD in human OPLL, ossification of the ligamentum flavum (OLF), and HLF samples. We observed an increase in CTSD expression in human PLL and LF primary cells during osteogenic differentiation, as indicated by western blotting (WB). To assess CTSD's impact on osteogenic differentiation, we manipulated its expression levels in human PLL and LF primary cells using siRNAs and lentivirus, as demonstrated by WB, ALP staining, and ARS. Our findings showed that suppressing CTSD hindered the osteogenic differentiation potential of PLL and LF cells, while overexpressing CTSD activated osteogenic differentiation. These findings identify CTSD as a potential therapeutic target for treating spinal stenosis associated with spinal ligament abnormalities.
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Affiliation(s)
- Lei Li
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha, China; Hunan Digital Spine Research Institute, Central South University, Changsha, China
| | - Zhen-Zhong Zheng
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha, China; Hunan Digital Spine Research Institute, Central South University, Changsha, China
| | - Jia-Jiong Jiang
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha, China; Hunan Digital Spine Research Institute, Central South University, Changsha, China
| | - Jia-Lin Chen
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha, China; Hunan Digital Spine Research Institute, Central South University, Changsha, China
| | - Bin Jiang
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha, China; Hunan Digital Spine Research Institute, Central South University, Changsha, China
| | - Ya-Wei Li
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha, China; Hunan Digital Spine Research Institute, Central South University, Changsha, China
| | - Yu-Liang Dai
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha, China; Hunan Digital Spine Research Institute, Central South University, Changsha, China
| | - Bing Wang
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha, China; Hunan Digital Spine Research Institute, Central South University, Changsha, China.
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Li R, Lai C, Luo H, Lan Y, Duan X, Bao D, Hou Z, Liu H, Fu S. Animal models of tendon calcification: Past, present, and future. Animal Model Exp Med 2024; 7:471-483. [PMID: 38887851 PMCID: PMC11369024 DOI: 10.1002/ame2.12439] [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: 01/08/2024] [Accepted: 05/07/2024] [Indexed: 06/20/2024] Open
Abstract
Tendon calcification is a common clinical condition that frequently occurs as a complication after tendon injury and surgery, or as an expression of fibrodysplasia ossificans progressiva. This condition can be referred to by various names in clinical practice and literature, including tendon ossification, tendon mineralization, heterotopic ossification, and calcific tendonitis. The exact pathogenesis of tendon calcification remains uncertain, but current mainstream research suggests that calcification is mostly cell mediated. To further elucidate the pathogenesis of tendon calcification and to better simulate the overall process, selecting appropriate experimental animal models is important. Numerous animal models have been utilized in various clinical studies, each with its own set of advantages and limitations. In this review, we have discussed the advancements made in research on animal models of tendon calcification, with a focus on the selection of experimental animals, the sites of injury in these models, and the methods employed for modeling.
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Affiliation(s)
- Ruichen Li
- Department of Bone and JointThe Affiliated Traditional Chinese Medicine Hospital, Southwest Medical UniversityLuzhouChina
| | - Canhao Lai
- Department of Bone and JointThe Affiliated Traditional Chinese Medicine Hospital, Southwest Medical UniversityLuzhouChina
| | - Hong Luo
- Department of Bone and JointThe Affiliated Traditional Chinese Medicine Hospital, Southwest Medical UniversityLuzhouChina
| | - Yujian Lan
- Department of Bone and JointThe Affiliated Traditional Chinese Medicine Hospital, Southwest Medical UniversityLuzhouChina
| | - Xinfang Duan
- Department of Bone and JointThe Affiliated Traditional Chinese Medicine Hospital, Southwest Medical UniversityLuzhouChina
| | - Dingsu Bao
- Department of Bone and JointThe Affiliated Traditional Chinese Medicine Hospital, Southwest Medical UniversityLuzhouChina
- Chengdu University of Traditional Chinese MedicineChengduChina
| | - Zhipeng Hou
- Department of Bone and JointThe Affiliated Traditional Chinese Medicine Hospital, Southwest Medical UniversityLuzhouChina
| | - Huan Liu
- Department of Bone and JointThe Affiliated Traditional Chinese Medicine Hospital, Southwest Medical UniversityLuzhouChina
| | - Shijie Fu
- Department of Bone and JointThe Affiliated Traditional Chinese Medicine Hospital, Southwest Medical UniversityLuzhouChina
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Li X, Zhou Y, Chen X, Wang H, Yang S, Yang J, Song Y, Zhao Z, Zhang H, Wu L. Semi-synthetic chondroitin sulfate CS-semi5 upregulates miR-122-5p, conferring a therapeutic effect on osteoarthritis via the p38/MMP13 pathway. Acta Pharm Sin B 2024; 14:3528-3542. [PMID: 39220883 PMCID: PMC11365380 DOI: 10.1016/j.apsb.2024.05.016] [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: 10/20/2023] [Revised: 03/21/2024] [Accepted: 04/18/2024] [Indexed: 09/04/2024] Open
Abstract
Osteoarthritis (OA) is an aging-associated disease characterized by joint stiffness pain and destroyed articular cartilage. Traditional treatments for OA are limited to alleviating various OA symptoms. There is a lack of drugs available in clinical practice that can truly repair cartilage damage. Here, we developed the chondroitin sulfate analog CS-semi5, semi-synthesized from chondroitin sulfate A. In vivo, CS-semi5 alleviated inflammation, provided analgesic effects, and protected cartilage in the modified Hulth OA rat model and papain-induced OA rat model. A bioinformatics analysis was performed on samples from OA patients and an exosome analysis on papain-induced OA rats, revealing miR-122-5p as the key regulator associated with CS-semi5 in OA treatment. Binding prediction revealed that miR-122-5p acted on the 3'-untranslated region of p38 mitogen-activated protein kinase, which was related to MMP13 regulation. Subsequent in vitro experiments revealed that CS-semi5 effectively reduced cartilage degeneration and maintained matrix homeostasis by inhibiting matrix breakdown through the miR-122-5p/p38/MMP13 axis, which was further validated in the articular cartilage of OA rats. This is the first study to investigate the semi-synthesized chondroitin sulfate CS-semi5, revealing its cartilage-protecting, anti-inflammatory, and analgesic properties that show promising therapeutic effects in OA via the miR-122-5p/p38/MMP13 pathway.
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Affiliation(s)
- Xiang Li
- State Key Laboratory of Digestive Health, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Ya Zhou
- State Key Laboratory of Digestive Health, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Xuefeng Chen
- State Key Laboratory of Digestive Health, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Hongjun Wang
- Tide Pharmaceutical Co., Ltd., Beijing 100176, China
| | - Shuang Yang
- State Key Laboratory of Digestive Health, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Jun Yang
- Tide Pharmaceutical Co., Ltd., Beijing 100176, China
| | | | - Zhehui Zhao
- State Key Laboratory of Digestive Health, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Haijing Zhang
- State Key Laboratory of Digestive Health, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Lianqiu Wu
- State Key Laboratory of Digestive Health, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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Jiménez-Ortega RF, Ortega-Meléndez AI, Patiño N, Rivera-Paredez B, Hidalgo-Bravo A, Velázquez-Cruz R. The Involvement of microRNAs in Bone Remodeling Signaling Pathways and Their Role in the Development of Osteoporosis. BIOLOGY 2024; 13:505. [PMID: 39056698 PMCID: PMC11273958 DOI: 10.3390/biology13070505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 06/26/2024] [Accepted: 07/05/2024] [Indexed: 07/28/2024]
Abstract
Bone remodeling, crucial for maintaining the balance between bone resorption and formation, relies on the coordinated activity of osteoclasts and osteoblasts. During osteoclastogenesis, hematopoietic stem cells (HSCs) differentiate into the osteoclast lineage through the signaling pathways OPG/RANK/RANKL. On the other hand, during osteoblastogenesis, mesenchymal stem cells (MSCs) differentiate into the osteoblast lineage through activation of the signaling pathways TGF-β/BMP/Wnt. Recent studies have shown that bone remodeling is regulated by post-transcriptional mechanisms including microRNAs (miRNAs). miRNAs are small, single-stranded, noncoding RNAs approximately 22 nucleotides in length. miRNAs can regulate virtually all cellular processes through binding to miRNA-response elements (MRE) at the 3' untranslated region (3'UTR) of the target mRNA. miRNAs are involved in controlling gene expression during osteogenic differentiation through the regulation of key signaling cascades during bone formation and resorption. Alterations of miRNA expression could favor the development of bone disorders, including osteoporosis. This review provides a general description of the miRNAs involved in bone remodeling and their significance in osteoporosis development.
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Affiliation(s)
- Rogelio F. Jiménez-Ortega
- Laboratorio de Genómica del Metabolismo Óseo, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City 14610, Mexico;
- Unidad de Acupuntura Humana Rehabilitatoria, Universidad Estatal del Valle de Ecatepec (UNEVE), Ecatepec de Morelos 55210, Mexico
| | - Alejandra I. Ortega-Meléndez
- Unidad Académica de Ciencias de la Salud, Universidad ETAC Campus Coacalco, Coacalco de Berriozábal 55700, Mexico;
| | - Nelly Patiño
- Unidad de Citometría de Flujo (UCiF), Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City 14610, Mexico;
| | - Berenice Rivera-Paredez
- Centro de Investigación en Políticas, Población y Salud, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico;
| | - Alberto Hidalgo-Bravo
- Departamento de Medicina Genómica, Instituto Nacional de Rehabilitación, Mexico City 14389, Mexico;
| | - Rafael Velázquez-Cruz
- Laboratorio de Genómica del Metabolismo Óseo, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City 14610, Mexico;
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Yang Z, Zhou J, Liu F, Chai Y, Zhang P, Yuan R. CsPbBr 3 Perovskite Quantum Dots Encapsulated by a Polymer Matrix for Ultrasensitive Dynamic Imaging of Intracellular MicroRNA. Anal Chem 2024; 96:10738-10747. [PMID: 38898770 DOI: 10.1021/acs.analchem.4c01833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Herein, CsPbBr3 perovskite quantum dots (CPB PQDs)@poly(methyl methacrylate) (PMMA) (CPB@PMMA) nanospheres were used as energy donors with high Förster resonance energy transfer (FRET) efficiency and exceptional biocompatibility for ultrasensitive dynamic imaging of tiny amounts of microRNAs in living cells. Impressively, compared with traditional homogeneous single QDs as energy donors, CPB@PMMA obtained by encapsulating numerous CPB PQDs into PMMA as energy donors could not only significantly increase the efficiency of FRET via improving the local concentration of CPB PQDs but also distinctly avoid the problem of cytotoxicity caused by divulged heavy metal ions entering living cells. Most importantly, in the presence of target miRNA-21, DNA dendrimer-like nanostructures labeled with 6-carboxy-tetramethylrhodamine (TAMRA) were generated by the exposed tether interhybridization of the Y-shape structure, which could wrap around the surface of CPB@PMMA nanospheres to remarkably bridge the distance of FRET and increase the opportunity for effective energy transfer, resulting in excellent precision and accuracy for ultrasensitive and dynamic imaging of miRNAs. As proof of concept, the proposed strategy exhibited ultrahigh sensitivity with a detection limit of 45.3 aM and distinctly distinguished drug-irritative miRNA concentration abnormalities with living cells. Hence, the proposed enzyme-free CPB@PMMA biosensor provides convincing evidence for supplying accurate information, which could be expected to be a powerful tool for bioanalysis, diagnosis, and prognosis of human diseases.
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Affiliation(s)
- Zezhou Yang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Jie Zhou
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Fang Liu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Yaqin Chai
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Pu Zhang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
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Geng X, Tang Y, Gu C, Zeng J, Zhao Y, Zhou Q, Jia L, Zhou S, Chen X. Integrin αVβ3 antagonist-c(RGDyk) peptide attenuates the progression of ossification of the posterior longitudinal ligament by inhibiting osteogenesis and angiogenesis. Mol Med 2024; 30:57. [PMID: 38698308 PMCID: PMC11067224 DOI: 10.1186/s10020-024-00822-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 04/22/2024] [Indexed: 05/05/2024] Open
Abstract
BACKGROUND Ossification of the posterior longitudinal ligament (OPLL), an emerging heterotopic ossification disease, causes spinal cord compression, resulting in motor and sensory dysfunction. The etiology of OPLL remains unclear but may involve integrin αVβ3 regulating the process of osteogenesis and angiogenesis. In this study, we focused on the role of integrin αVβ3 in OPLL and explored the underlying mechanism by which the c(RGDyk) peptide acts as a potent and selective integrin αVβ3 inhibitor to inhibit osteogenesis and angiogenesis in OPLL. METHODS OPLL or control ligament samples were collected in surgery. For OPLL samples, RNA-sequencing results revealed activation of the integrin family, particularly integrin αVβ3. Integrin αVβ3 expression was detected by qPCR, Western blotting, and immunohistochemical analysis. Fluorescence microscopy was used to observe the targeted inhibition of integrin αVβ3 by the c(RGDyk) peptide on ligaments fibroblasts (LFs) derived from patients with OPLL and endothelial cells (ECs). The effect of c(RGDyk) peptide on the ossification of pathogenic LFs was detected using qPCR, Western blotting. Alkaline phosphatase staining or alizarin red staining were used to test the osteogenic capability. The effect of the c(RGDyk) peptide on angiogenesis was determined by EC migration and tube formation assays. The effects of the c(RGDyk) peptide on heterotopic bone formation were evaluated by micro-CT, histological, immunohistochemical, and immunofluorescence analysis in vivo. RESULTS The results indicated that after being treated with c(RGDyk), the osteogenic differentiation of LFs was significantly decreased. Moreover, the c(RGDyk) peptide inhibited the migration of ECs and thus prevented the nutritional support required for osteogenesis. Furthermore, the c(RGDyk) peptide inhibited ectopic bone formation in mice. Mechanistic analysis revealed that c(RGDyk) peptide could inhibit osteogenesis and angiogenesis in OPLL by targeting integrin αVβ3 and regulating the FAK/ERK pathway. CONCLUSIONS Therefore, the integrin αVβ3 appears to be an emerging therapeutic target for OPLL, and the c(RGDyk) peptide has dual inhibitory effects that may be valuable for the new therapeutic strategy of OPLL.
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Affiliation(s)
- Xiangwu Geng
- Spine Center, Department of Orthopaedics, Changzheng Hospital, Naval Medical University (Second Military Medical University), Shanghai, 200003, China
| | - Yifan Tang
- Spine Center, Department of Orthopaedics, Changzheng Hospital, Naval Medical University (Second Military Medical University), Shanghai, 200003, China
| | - Changjiang Gu
- Spine Center, Department of Orthopaedics, Changzheng Hospital, Naval Medical University (Second Military Medical University), Shanghai, 200003, China
| | - Junkai Zeng
- Spine Center, Department of Orthopaedics, Changzheng Hospital, Naval Medical University (Second Military Medical University), Shanghai, 200003, China
| | - Yin Zhao
- Spine Center, Department of Orthopaedics, Changzheng Hospital, Naval Medical University (Second Military Medical University), Shanghai, 200003, China
| | - Quanwei Zhou
- Spine Center, Department of Orthopaedics, Changzheng Hospital, Naval Medical University (Second Military Medical University), Shanghai, 200003, China
| | - Lianshun Jia
- Spine Center, Department of Orthopaedics, Changzheng Hospital, Naval Medical University (Second Military Medical University), Shanghai, 200003, China
| | - Shengyuan Zhou
- Spine Center, Department of Orthopaedics, Changzheng Hospital, Naval Medical University (Second Military Medical University), Shanghai, 200003, China.
| | - Xiongsheng Chen
- Spine Center, Department of Orthopaedics, Changzheng Hospital, Naval Medical University (Second Military Medical University), Shanghai, 200003, China.
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Wang L, Jiang W, Zhao S, Xie D, Chen Q, Zhao Q, Wu H, Luo J, Yang L. Sorafenib inhibits ossification of the posterior longitudinal ligament by blocking LOXL2-mediated vascularization. Bone Res 2024; 12:24. [PMID: 38594260 PMCID: PMC11004159 DOI: 10.1038/s41413-024-00327-7] [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: 05/24/2023] [Revised: 03/10/2024] [Accepted: 03/16/2024] [Indexed: 04/11/2024] Open
Abstract
Ossification of the Posterior Longitudinal Ligament (OPLL) is a degenerative hyperostosis disease characterized by the transformation of the soft and elastic vertebral ligament into bone, resulting in limited spinal mobility and nerve compression. Employing both bulk and single-cell RNA sequencing, we elucidate the molecular characteristics, cellular components, and their evolution during the OPLL process at a single-cell resolution, and validate these findings in clinical samples. This study also uncovers the capability of ligament stem cells to exhibit endothelial cell-like phenotypes in vitro and in vivo. Notably, our study identifies LOXL2 as a key regulator in this process. Through gain-and loss-of-function studies, we elucidate the role of LOXL2 in the endothelial-like differentiation of ligament cells. It acts via the HIF1A pathway, promoting the secretion of downstream VEGFA and PDGF-BB. This function is not related to the enzymatic activity of LOXL2. Furthermore, we identify sorafenib, a broad-spectrum tyrosine kinase inhibitor, as an effective suppressor of LOXL2-mediated vascular morphogenesis. By disrupting the coupling between vascularization and osteogenesis, sorafenib demonstrates significant inhibition of OPLL progression in both BMP-induced and enpp1 deficiency-induced animal models while having no discernible effect on normal bone mass. These findings underscore the potential of sorafenib as a therapeutic intervention for OPLL.
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Affiliation(s)
- Longqing Wang
- Spine Center, Department of Orthopaedics, Shanghai Changzheng Hospital, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, PR China
| | - Wenhao Jiang
- Yangzhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), Tongji University School of Medicine, Shanghai, PR China
| | - Siyuan Zhao
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Dong Xie
- Department of Orthopaedics, No. 905 Hospital of PLA Navy, Shanghai, PR China
| | - Qing Chen
- Spine Center, Department of Orthopaedics, Shanghai Changzheng Hospital, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, PR China
| | - Qi Zhao
- Spine Center, Department of Orthopaedics, Shanghai Changzheng Hospital, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, PR China
| | - Hao Wu
- Spine Center, Department of Orthopaedics, Shanghai Changzheng Hospital, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, PR China
| | - Jian Luo
- Yangzhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), Tongji University School of Medicine, Shanghai, PR China.
| | - Lili Yang
- Spine Center, Department of Orthopaedics, Shanghai Changzheng Hospital, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, PR China.
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Wei L, Cao P, Xu C, Hu B, Wu H, Tian Y, Chen H, Shen X, Yuan W. A Novel Posterior Compression Score System for Outcome Prediction in Laminoplasty Treated OPLL Patients: A Propensity-Matched Analysis. Global Spine J 2024; 14:941-948. [PMID: 36164680 PMCID: PMC11192126 DOI: 10.1177/21925682221130045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
STUDY DESIGN A retrospective observational study. OBJECTIVE To describe a novel outcome indication system, the posterior compression score (PCS), and investigate its clinical value in cervical ossification of the posterior longitudinal ligament (OPLL) patients treated with laminoplasty. METHODS A total of 282 OPLL patients who underwent laminoplasty from January 2013 to December 2018 were reviewed. The patients were divided into high-score (HS) or low-score (LS) groups based on whether the PCS was over 8. Propensity score matching analysis with a caliper of .1 was used to attenuate the potential selection bias. Clinical measurements, including the Japanese Orthopedic Association (JOA) score, visual analog scale (VAS), neck disability index (NDI), and radiological measurements, including C2-C7 lordotic angle and range of motion (ROM), were compared between the groups. RESULTS The mean follow-up period was 29.87 ± 9.17 months. There were no significant differences between the two groups regarding patients' baseline demographical and clinical characteristics after propensity score matching. No significant differences were found in the operative time, blood loss, postoperative VAS score for neck and arm pain, postoperative C2-C7 lordotic angle, or postoperative ROM (P > .05). However, the postoperative JOA score and recovery rate were significantly higher in the HS group than in the LS group, while the postoperative NDI was significantly lower in the HS group (P < .05). CONCLUSION OPLL patients with higher PCS scores displayed better clinical outcomes. The novel PCS system is suggested to be a reliable scoring system for surgical outcome evaluation in patients with cervical OPLL.
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Affiliation(s)
- Leixin Wei
- Department of Orthopedic Surgery, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Peng Cao
- Department of Orthopedic Surgery, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Chen Xu
- Department of Orthopedic Surgery, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Bo Hu
- Department of Orthopedic Surgery, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Huiqiao Wu
- Department of Orthopedic Surgery, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Ye Tian
- Department of Orthopedic Surgery, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Huajiang Chen
- Department of Orthopedic Surgery, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Xiaolong Shen
- Department of Orthopedic Surgery, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Wen Yuan
- Department of Orthopedic Surgery, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, China
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Ito S, Nakashima H, Segi N, Ouchida J, Oda M, Yamauchi I, Oishi R, Miyairi Y, Mori K, Imagama S. Automated Detection of the Thoracic Ossification of the Posterior Longitudinal Ligament Using Deep Learning and Plain Radiographs. BIOMED RESEARCH INTERNATIONAL 2023; 2023:8495937. [PMID: 38054045 PMCID: PMC10695689 DOI: 10.1155/2023/8495937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 11/05/2023] [Accepted: 11/08/2023] [Indexed: 12/07/2023]
Abstract
Ossification of the ligaments progresses slowly in the initial stages, and most patients are unaware of the disease until obvious myelopathy symptoms appear. Consequently, treatment and clinical outcomes are not satisfactory. This study is aimed at developing an automated system for the detection of the thoracic ossification of the posterior longitudinal ligament (OPLL) using deep learning and plain radiography. We retrospectively reviewed the data of 146 patients with thoracic OPLL and 150 control cases without thoracic OPLL. Plain lateral thoracic radiographs were used for object detection, training, and validation. Thereafter, an object detection system was developed, and its accuracy was calculated. The performance of the proposed system was compared with that of two spine surgeons. The accuracy of the proposed object detection model based on plain lateral thoracic radiographs was 83.4%, whereas the accuracies of spine surgeons 1 and 2 were 80.4% and 77.4%, respectively. Our findings indicate that our automated system, which uses a deep learning-based method based on plain radiographs, can accurately detect thoracic OPLL. This system has the potential to improve the diagnostic accuracy of thoracic OPLL.
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Affiliation(s)
- Sadayuki Ito
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroaki Nakashima
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Naoki Segi
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Jun Ouchida
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masahiro Oda
- Information Strategy Office, Information and Communications, Nagoya University Nagoya, Japan
| | - Ippei Yamauchi
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Ryotaro Oishi
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuichi Miyairi
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kensaku Mori
- Information Strategy Office, Information and Communications, Nagoya University Nagoya, Japan
- Department of Intelligent Systems, Nagoya University Graduate School of Informatics, Nagoya, Japan
- Research Center for Medical Bigdata, National Institute of Informatics, Tokyo, Japan
| | - Shiro Imagama
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
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11
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Jiang X, Yang J, Lin Y, Liu F, Tao J, Zhang W, Xu J, Zhang M. Extracellular vesicles derived from human ESC-MSCs target macrophage and promote anti-inflammation process, angiogenesis, and functional recovery in ACS-induced severe skeletal muscle injury. Stem Cell Res Ther 2023; 14:331. [PMID: 37964317 PMCID: PMC10647154 DOI: 10.1186/s13287-023-03530-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 10/09/2023] [Indexed: 11/16/2023] Open
Abstract
BACKGROUND Acute compartment syndrome (ACS) is one of the most common complications of musculoskeletal injury, leading to the necrosis and demise of skeletal muscle cells. Our previous study showed that embryonic stem cells-derived mesenchymal stem cells (ESC-MSCs) are novel therapeutics in ACS treatment. As extracellular vesicles (EVs) are rapidly gaining attention as cell-free therapeutics that have advantages over parental stem cells, the therapeutic potential and mechanisms of EVs from ESC-MSCs on ACS need to be explored. METHOD In the present study, we examined the protective effects in the experimental ACS rat model and investigated the role of macrophages in mediating these effects. Next, we used transcriptome sequencing to explore the mechanisms by which ESC-MSC-EVs regulate macrophage polarization. Furthermore, miRNA sequencing was performed on ESC-MSC-EVs to identify miRNA candidates associated with macrophage polarization. RESULTS We found that intravenous administration of ESC-MSC-EVs, given at the time of fasciotomy, significantly promotes the anti-inflammation process, angiogenesis, and functional recovery of muscle in ACS. The beneficial effects were associated with ESC-MSC-EVs affecting macrophage polarization by delivering various miRNAs which regulate NF-κB, JAK/STAT, and PI3K/AKT pathways. Our data further illustrate that ESC-MSC-EVs mainly modulate macrophage polarization via the miR-21/PTEN, miR-320a/PTEN, miR-423/NLRP3, miR-100/mTOR, and miR-26a/TLR3 axes. CONCLUSION Together, our results demonstrated the beneficial effects of ESC-MSC-EVs in ACS, wherein the miRNAs present in ESC-MSC-EVs regulate the polarization of macrophages.
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Affiliation(s)
- Xiangkang Jiang
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, No. 88 Jiefang Road, Hangzhou, 310009, Zhejiang Province, China
- Key Laboratory of the Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou, China
- Zhejiang Provincial Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, China
| | - Jingyuan Yang
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, No. 88 Jiefang Road, Hangzhou, 310009, Zhejiang Province, China
- Key Laboratory of the Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou, China
- Zhejiang Provincial Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, China
| | - Yao Lin
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, No. 88 Jiefang Road, Hangzhou, 310009, Zhejiang Province, China
- Key Laboratory of the Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou, China
- Zhejiang Provincial Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, China
| | - Fei Liu
- Department of Emergency Medicine, Nanjing Drum Tower Hospital, Medical School, Nanjing University, Nanjing, China
| | - Jiawei Tao
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, No. 88 Jiefang Road, Hangzhou, 310009, Zhejiang Province, China
- Key Laboratory of the Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou, China
- Zhejiang Provincial Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, China
| | - Wenbin Zhang
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, No. 88 Jiefang Road, Hangzhou, 310009, Zhejiang Province, China
- Key Laboratory of the Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou, China
- Zhejiang Provincial Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, China
| | - Jiefeng Xu
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, No. 88 Jiefang Road, Hangzhou, 310009, Zhejiang Province, China.
- Key Laboratory of the Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou, China.
- Zhejiang Provincial Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, China.
| | - Mao Zhang
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, No. 88 Jiefang Road, Hangzhou, 310009, Zhejiang Province, China.
- Key Laboratory of the Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou, China.
- Zhejiang Provincial Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, China.
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12
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Xue HH, Tang D, Zhao WH, Chen L, Liao Z, Xue JL. Static mechanical analysis of the vertebral body after modified anterior cervical discectomy and fusion (partial vertebral osteotomy): a finite element model. J Orthop Surg Res 2023; 18:554. [PMID: 37528421 PMCID: PMC10391851 DOI: 10.1186/s13018-023-04033-8] [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: 04/22/2023] [Accepted: 07/20/2023] [Indexed: 08/03/2023] Open
Abstract
BACKGROUND Modified anterior cervical discectomy and fusion (Mod ACDF) can effectively address ossification of the posterior longitudinal ligament (OPLL), which is difficult to remove directly from the posterior edge of the vertebral body, with considerably lesser damage as compared to anterior cervical corpectomy and fusion (ACCF). We compared the static mechanics of different anterior approaches by using an ideal finite element model. METHODS A complete finite element model was established and classified into the following three surgical models according to different model cutting operations: ACDF, ACCF, and Mod ACDF. Three different bone volume situations (normal bone mineral density, osteopenia, and osteoporosis) were simulated. After fixing the lower surface of C5 or C6, a load was applied to the upper surface of C4, and the stress distribution and displacement of the upper surface of C5 or C6 were observed and the related values were recorded. RESULTS The average Von Mises Stress and displacement levels of Mod ACDF were between those of ACDF and ACCF; with the peak Von Mises Stress occurring on the posterior side of the vertebral body (Points 1-4). The change in Von Mises Stress of the vertebral body is not significant during bone loss. However, the degree of displacement of the vertebral body surface and risk of vertebral collapse are increased (100 N: 13.91 vs. 19.47 vs. 21.62 μm; 150 N: 19.60 vs. 29.30 vs. 31.64 μm; 200 N: 28.53 vs. 38.65 vs. 44.83 μm). CONCLUSIONS The static biomechanical effects caused by Mod ACDF are intermediate between ACDF and ACCF, and the risk of vertebral body collapse is lower than that by ACCF. Therefore, Mod ACDF may be an effective solution when targeting OPLL with poorly positioned posterior vertebral body edges.
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Affiliation(s)
- Huo-huo Xue
- Department of Spine Surgery, Fuzhou Second Hospital, 350007 Fuzhou, China
| | - Dian Tang
- Department of Spine Surgery, Fuzhou Second Hospital, 350007 Fuzhou, China
| | - Wen-han Zhao
- Fujian Medical University Union Hospital, Fuzhou, 350100 China
| | - Liang Chen
- Fujian Medical University Union Hospital, Fuzhou, 350100 China
| | - Zhong Liao
- Department of Spine Surgery, Fuzhou Second Hospital, 350007 Fuzhou, China
| | - Jing-lai Xue
- Department of Spine Surgery, Fuzhou Second Hospital, 350007 Fuzhou, China
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13
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Li S, Kong Z, Ma B, Wang H, Han Y, Zhao H, Shi X, Lv P, Yue H, Grässel S, Yin L. Low miR-182-5p Expressing Extracellular Vesicles Derived From Human Bone Marrow Stromal Cells of Subjects With Steroid-Induced Osteonecrosis of the Femoral Head Aggravate Disease Progression. J Bone Miner Res 2023; 38:976-993. [PMID: 37155311 DOI: 10.1002/jbmr.4823] [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: 09/29/2022] [Revised: 04/28/2023] [Accepted: 05/03/2023] [Indexed: 05/10/2023]
Abstract
Steroid-induced osteonecrosis of the femoral head (SONFH) is a refractory, progressive disease. However, the underlying mechanisms that aggravate femoral head necrosis remain unclear. Extracellular vesicles (EVs) act as molecular carriers in intercellular communication. We hypothesize that EVs derived from human (h) bone marrow stromal cells (BMSC) resident in SONFH lesion areas promote the pathogenesis of SONFH. In the present study, we determined the modulatory effects of SONFH-hBMSCs-derived EVs on the pathogenesis of SONFH in vitro and in vivo. We found that the expression of hsa-miR-182-5p was downregulated in SONFH-hBMSCs and EVs isolated from those hBMSCs. After tail vein injection, EVs isolated from hBMSCs transfected with hsa-miR-182-5p inhibitor aggravated femoral head necrosis in the SONFH mouse model. We conclude that miR-182-5p regulates bone turnover in the SONFH mouse model via targeting MYD88 and subsequent upregulation of RUNX2 expression. We further assume that EVs derived from hBMSCs resident in SONFH lesion areas aggravate femoral head necrosis by downregulating miR-182-5p secreted from hBMSC located outside these lesions. We suggest that miR-182-5p could provide a novel target for future therapeutic approaches to treat or prevent SONFH. © 2023 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Shushan Li
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhiheng Kong
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Baodong Ma
- Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - Haitao Wang
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yu Han
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hongbo Zhao
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiangyu Shi
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Pengju Lv
- Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - Han Yue
- Henan Provincial People's Hospital, Zhengzhou, China
| | - Susanne Grässel
- Department of Orthopaedic Surgery, Experimental Orthopaedics, Centre for Medical Biotechnology (ZMB/Biopark 1), University of Regensburg, Regensburg, Germany
| | - Li Yin
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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14
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Tang T, Zhu Z, He Z, Wang F, Chen H, Liu S, Zhan M, Wang J, Tian W, Chen D, Wu X, Liu X, Zhou Z, Liu S. DLX5 regulates the osteogenic differentiation of spinal ligaments cells derived from ossification of the posterior longitudinal ligament patients via NOTCH signaling. JOR Spine 2023; 6:e1247. [PMID: 37361333 PMCID: PMC10285757 DOI: 10.1002/jsp2.1247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/01/2023] [Accepted: 01/08/2023] [Indexed: 01/30/2023] Open
Abstract
Background Ossification of the posterior longitudinal ligaments (OPLL) is common disorder characterized by heterotopic ossification of the spinal ligaments. Mechanical stimulation (MS) plays an important role in OPLL. DLX5 is an essential transcription factor required for osteoblast differentiation. However, the role of DLX5 during in OPLL is unclear. This study aims to investigate whether DLX5 is associated with OPLL progression under MS. Methods Stretch stimulation was applied to spinal ligaments cells derived from OPLL (OPLL cells) and non-OPLL (non-OPLL cells) patients. Expression of DLX5 and osteogenesis-related genes were determined by quantitative real-time polymerase chain reaction and Western blot. The osteogenic differentiation ability of the cells was measured using alkaline phosphatase (ALP) staining and alizarin red staining. The protein expression of DLX5 in the tissues and the nuclear translocation of NOTCH intracellular domain (NICD) was examined by immunofluorescence. Results Compared with non-OPLL cells, OPLL cells expressed higher levels of DLX5 in vitro and vivo (p < 0.01). Upregulated expression of DLX5 and osteogenesis-related genes (OSX, RUNX2, and OCN) were observed in OPLL cells induced with stretch stimulation and osteogenic medium, whereas there was no change in the non-OPLL cells (p < 0.01). Cytoplasmic NICD protein translocated from the cytoplasm to the nucleus inducing DLX5 under stretch stimulation, which was reduced by the NOTCH signaling inhibitors (DAPT) (p < 0.01). Conclusions These data suggest that DLX5 play a critical role in MS-induced progression of OPLL through NOTCH signaling, which provides a new insight into the pathogenesis of OPLL.
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Affiliation(s)
- Tao Tang
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Zhengya Zhu
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
| | - Zhongyuan He
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Fuan Wang
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Hongkun Chen
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
| | - Shengkai Liu
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Mingbin Zhan
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Jianmin Wang
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
| | - Wei Tian
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical MaterialsBeijing Research Institute of Orthopaedics and Traumatology, Beijing Jishuitan HospitalBeijingChina
| | - Dafu Chen
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical MaterialsBeijing Research Institute of Orthopaedics and Traumatology, Beijing Jishuitan HospitalBeijingChina
| | - Xinbao Wu
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical MaterialsBeijing Research Institute of Orthopaedics and Traumatology, Beijing Jishuitan HospitalBeijingChina
| | - Xizhe Liu
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Zhiyu Zhou
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Shaoyu Liu
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
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Review of Basic Research about Ossification of the Spinal Ligaments Focusing on Animal Models. J Clin Med 2023; 12:jcm12051958. [PMID: 36902744 PMCID: PMC10003841 DOI: 10.3390/jcm12051958] [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: 01/31/2023] [Revised: 02/25/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
Ossification of the posterior longitudinal ligament (OPLL) is a heterotopic ossification that may cause spinal cord compression. With the recent development of computed tomography (CT) imaging, it is known that patients with OPLL often have complications related to ossification of other spinal ligaments, and OPLL is now considered part of ossification of the spinal ligaments (OSL). OSL is known to be a multifactorial disease with associated genetic and environmental factors, but its pathophysiology has not been clearly elucidated. To elucidate the pathophysiology of OSL and develop novel therapeutic strategies, clinically relevant and validated animal models are needed. In this review, we focus on animal models that have been reported to date and discuss their pathophysiology and clinical relevance. The purpose of this review is to summarize the usefulness and problems of existing animal models and to help further the development of basic research on OSL.
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Gao KJ, Yin RH, Wang Y, Wang Z, Ma AJ. Exosomal miR-320e as a Novel Potential Biomarker for Cerebral Small Vessel Disease. Int J Gen Med 2023; 16:641-655. [PMID: 36851997 PMCID: PMC9961587 DOI: 10.2147/ijgm.s399338] [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: 11/30/2022] [Accepted: 01/20/2023] [Indexed: 02/23/2023] Open
Abstract
Background Cerebral small vessel disease (CSVD) with an insidious onset can cause overall neurological dysfunction and dementia, bringing a massive burden to society. However, the pathogenesis of CSVD is complex and reliable non-invasive biomarkers for diagnosis are still not available at present. Our study aimed to investigate abnormal exosomal miRNA patterns via microarray analysis and identify candidate biomarkers for CSVD. Methods We isolated exosomes from the plasma of all subjects and identified exosomes via currently universally accepted methods. The miRNAs were profiled through microarrays, and then the expression of selected differentially expressed miRNAs was validated through RT-PCR. GO and KEGG analysis predicted possible functions of differentially expressed miRNAs. Receiver operating characteristic (ROC) curve was employed to observe the diagnostic value of selective miRNAs. Finally, the relationship between the expression of miR-320e and the CSVD burden was analyzed. Results A total of 14 miRNAs displayed differential enrichment levels with |fold change|≥1.5 and p<0.05 through miRNA microarray analysis. The RT-PCR analysis validated that exosomal miR-320e was significantly downregulated in CSVD patients (p<0.0001). ROC curve analysis of exosomal miR-320e showed the area under the curve of 0.752. According to the multivariable analysis, miR-320e was an independent predictor of white matter hyperintensity ([aOR]= 0.452, 95% confidence interval [CI]= 0.258-0.792, p=0.006) and exhibited a negative correlation with the load of periventricular white matter hyperintensities (p=0.0021) and deep white matter hyperintensities (p=0.0018), respectively. In addition, it exhibited a negative correlation with total CSVD burden score (r=-0.276, p=0.001). Conclusion In our study, plasma exosomal miR-320e has a certain diagnostic value for CSVD, and a significant correlation with imaging burden of CSVD. Overall, exosomal miR-320e has the potential to be a novel biomarker for CSVD, but further research with a large sample size is necessary to assess its clinical utility.
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Affiliation(s)
- Ke-Jin Gao
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, People’s Republic of China
| | - Rui-Hua Yin
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, People’s Republic of China
| | - Yuan Wang
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, People’s Republic of China
| | - Zheng Wang
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, People’s Republic of China
| | - Ai-Jun Ma
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, People’s Republic of China
- Institute of Cerebrovascular, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, People’s Republic of China
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Zhang H, Zhang Q, Yuan Z, Dong J. Non-coding RNAs in ossification of the posterior longitudinal ligament. Front Genet 2022; 13:1069575. [PMID: 36506306 PMCID: PMC9729789 DOI: 10.3389/fgene.2022.1069575] [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: 10/14/2022] [Accepted: 11/14/2022] [Indexed: 11/25/2022] Open
Abstract
Ossification of the posterior longitudinal ligament (OPLL) is a kind of disease that involves a variety of factors leading to ectopic bone deposition of the spinal ligament. Although the detailed mechanism is not clear, genetic factors play important roles in the development of this disease. Noncoding RNA (ncRNA) refers to an RNA molecule that is not translated into a protein but participates in the regulation of gene expression. Functionally important types of ncRNA associated with OPLL include long noncoding RNA, microRNA, and circular RNA. We listed the differentially expressed ncRNAs in OPLL patients and normal controls to find the ncRNAs most relevant to the pathogenesis of the disease. The potential regulatory networks of ncRNA in OPLL cells were analyzed based on their most abundant signal transduction pathway data. The analysis of the highly connected ncRNAs in the regulatory network suggests that they play an important role in OPLL. These findings provide new directions for the study of OPLL pathogenesis and therapeutic targets. In this paper, we reviewed and analyzed the literature on ncRNAs in OPLL published in recent years, aiming to help doctors better understand and treat this disease.
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