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Zhu L, Wang J, Wu Z, Chen S, He Y, Jiang Y, Luo G, Wu Z, Li Y, Xie J, Zou S, Zhou C. AFF4 regulates osteogenic potential of human periodontal ligament stem cells via mTOR-ULK1-autophagy axis. Cell Prolif 2024; 57:e13546. [PMID: 37731335 PMCID: PMC10849782 DOI: 10.1111/cpr.13546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/23/2023] [Accepted: 08/30/2023] [Indexed: 09/22/2023] Open
Abstract
Scaffold protein AF4/FMR2 family member 4 (AFF4) has been found to play a role in osteogenic commitment of stem cells. However, function of AFF4 in human periodontal ligament stem cells (hPDLSCs) has not been studied yet. This present study aims to investigate the biological effect of AFF4 on osteogenic differentiation of hPDLSCs and potential mechanistic pathway. First, AFF4 expression profile was evaluated in conditions of periodontitis and osteogenic differentiation of hPDLSCs by immunohistochemical staining, western blot and qRT-PCR. Next, si-RNA mediated knockdown and lentiviral transduction mediated overexpression of AFF4 were adopted to explore impact of AFF4 on osteogenic capacity of hPDLSCs. Then, possible mechanistic pathway was identified. At last, pharmacological agonist of autophagy, rapamycin, was utilized to affirm the role of autophagy in AFF4-regulated osteogenesis of hPDLSCs. First, AFF4 expressions were significantly lower in inflamed periodontal tissues and lipopolysaccharides-treated hPDLSCs than controls, and were up-regulated during osteogenic differentiation of hPDLSCs. Next, osteogenic potential of hPDLSCs was impaired by AFF4 knockdown and potentiated by AFF4 overexpression. Moreover, AFF4 was found to positively regulate autophagic activity in hPDLSCs. At last, rapamycin treatment was shown to be able to partly restore AFF4 knockdown-suppressed osteogenic differentiation. Our study demonstrates that AFF4 regulates osteogenic potential of hPDLSCs via targeting autophagic activity. The involvement of AFF4 in periodontal homeostasis was identified for the first time.
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Affiliation(s)
- Li Zhu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Jiahe Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Zuping Wu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang ProvinceCancer Center of Zhejiang UniversityHangzhouChina
| | - Sirui Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Yuying He
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Yukun Jiang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Guowen Luo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Zhuoxuan Wu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Yuyu Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Jing Xie
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Shujuan Zou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
- Department of Orthodontics, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Chenchen Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
- Department of Pediatric Dentistry, West China Hospital of StomatologySichuan UniversityChengduChina
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2
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Nascimben M, Kovrlija I, Locs J, Loca D, Rimondini L. Fusion and classification algorithm of octacalcium phosphate production based on XRD and FTIR data. Sci Rep 2024; 14:1489. [PMID: 38233557 PMCID: PMC10794451 DOI: 10.1038/s41598-024-51795-0] [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: 06/23/2023] [Accepted: 01/08/2024] [Indexed: 01/19/2024] Open
Abstract
The present manuscript tested an automated analysis sequence to provide a decision support system to track the OCP synthesis from [Formula: see text]-TCP over time. Initially, the XRD and FTIR signals from a hundredfold scaled-up hydrolysis of OCP from [Formula: see text]-TCP were fused and modeled by the curve fitting based on the significantly established maxima from the literature and nine features extracted from the fitted shapes. Afterward, the analysis sequence enclosed the machine learning techniques for feature ranking, spatial filtering, and dimensionality reduction to support the automatic recognition of the synthesis stages. The proposed analysis pipeline for OCP identification might be the foundation for a decision support system explicitly targeting OCP synthesis. Future projects will exploit the suggested methodology for pinpointing the OCP production over time (including the intermediary phases present in the OCP formation) and for evaluating whether biological variables might be merged with biomaterial properties to build a unified model of tissue response to the implant.
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Affiliation(s)
- Mauro Nascimben
- Center for Translational Research on Autoimmune and Allergic Diseases-CAAD, Department of Health Sciences, Università del Piemonte Orientale UPO, 28100, Novara, Italy.
- Enginsoft SpA, 35129, Padua, Italy.
| | - Ilijana Kovrlija
- Institute of Biomaterials and Bioengineering, Faculty of Natural Sciences and Technology, Riga Technical University, Riga, Pulka 3, LV-1007, Latvia
| | - Janis Locs
- Institute of Biomaterials and Bioengineering, Faculty of Natural Sciences and Technology, Riga Technical University, Riga, Pulka 3, LV-1007, Latvia
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Riga, Latvia
| | - Dagnija Loca
- Institute of Biomaterials and Bioengineering, Faculty of Natural Sciences and Technology, Riga Technical University, Riga, Pulka 3, LV-1007, Latvia
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Riga, Latvia
| | - Lia Rimondini
- Center for Translational Research on Autoimmune and Allergic Diseases-CAAD, Department of Health Sciences, Università del Piemonte Orientale UPO, 28100, Novara, Italy
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3
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Yang S, Gao J, Chen M, Sun Y, Qiao X, Mao H, Guo L, Yu Y, Yang D. Let-7a promotes periodontal bone regeneration of bone marrow mesenchymal stem cell aggregates via the Fas/FasL-autophagy pathway. J Cell Mol Med 2023; 27:4056-4068. [PMID: 37855249 PMCID: PMC10746947 DOI: 10.1111/jcmm.17988] [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: 05/30/2023] [Revised: 08/29/2023] [Accepted: 09/28/2023] [Indexed: 10/20/2023] Open
Abstract
Periodontal bone regeneration using bone marrow mesenchymal stem cell (BMMSC) transplantation is a promising method; however, the method for osteogenic differentiation of BMMSCs needs to be improved. In this research, we sought to identify the roles of let-7a in the osteogenesis of BMMSCs and to provide a potential method for periodontal bone regeneration. Our previous study revealed that Fas/FasL is a target of let-7a. In this study, we demonstrated that let-7a overexpression significantly enhanced BMMSC-CAs osteogenesis both in vitro and in vivo. Mechanistically, upregulation of Fas/FasL using the rfas/rfaslg plasmid obstructed the osteogenesis of BMMSCs by inhibiting autophagy. Furthermore, we confirmed that overexpression of let-7a activated autophagy and alleviated the inhibited osteogenesis by the autophagy inhibitor 3-MA and the rfas/rfaslg plasmid of BMMSCs. In general, our findings showed that let-7a promoted the osteogenesis of BMMSCs through the Fas/FasL-autophagy pathway, suggesting that the application of let-7a in BMMSC-CAs based periodontal bone regeneration could be a promising strategy.
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Affiliation(s)
- Shiyao Yang
- Department of EndodonticsStomatological Hospital of Chongqing Medical UniversityChongqingChina
- Stomatological Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqingChina
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqingChina
| | - Jing Gao
- Department of EndodonticsStomatological Hospital of Chongqing Medical UniversityChongqingChina
- Stomatological Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqingChina
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqingChina
| | - Meng Chen
- Department of Oral and Maxillofacial SurgeryDaping Hospital, Army Medical UniversityChongqingChina
| | - Yuting Sun
- Department of EndodonticsStomatological Hospital of Chongqing Medical UniversityChongqingChina
- Stomatological Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqingChina
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqingChina
| | - Xin Qiao
- Department of EndodonticsStomatological Hospital of Chongqing Medical UniversityChongqingChina
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqingChina
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqingChina
| | - Hongchen Mao
- Department of EndodonticsStomatological Hospital of Chongqing Medical UniversityChongqingChina
- Stomatological Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqingChina
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqingChina
| | - Li Guo
- Department of EndodonticsStomatological Hospital of Chongqing Medical UniversityChongqingChina
- Stomatological Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqingChina
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqingChina
| | - Yang Yu
- Department of EndodonticsStomatological Hospital of Chongqing Medical UniversityChongqingChina
- Stomatological Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqingChina
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqingChina
| | - Deqin Yang
- Department of EndodonticsStomatological Hospital of Chongqing Medical UniversityChongqingChina
- Stomatological Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqingChina
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqingChina
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4
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Pirmoradi L, Shojaei S, Ghavami S, Zarepour A, Zarrabi A. Autophagy and Biomaterials: A Brief Overview of the Impact of Autophagy in Biomaterial Applications. Pharmaceutics 2023; 15:2284. [PMID: 37765253 PMCID: PMC10536801 DOI: 10.3390/pharmaceutics15092284] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/17/2023] [Accepted: 08/25/2023] [Indexed: 09/29/2023] Open
Abstract
Macroautophagy (hereafter autophagy), a tightly regulated physiological process that obliterates dysfunctional and damaged organelles and proteins, has a crucial role when biomaterials are applied for various purposes, including diagnosis, treatment, tissue engineering, and targeted drug delivery. The unparalleled physiochemical properties of nanomaterials make them a key component of medical strategies in different areas, such as osteogenesis, angiogenesis, neurodegenerative disease treatment, and cancer therapy. The application of implants and their modulatory effects on autophagy have been known in recent years. However, more studies are necessary to clarify the interactions and all the involved mechanisms. The advantages and disadvantages of nanomaterial-mediated autophagy need serious attention in both the biological and bioengineering fields. In this mini-review, the role of autophagy after biomaterial exploitation and the possible related mechanisms are explored.
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Affiliation(s)
- Leila Pirmoradi
- Department of Medical Physiology and Pharmacology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj 66177-13446, Iran;
| | - Shahla Shojaei
- Department of Human Anatomy and Cell Science, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB R3E 0V9, Canada;
| | - Saeid Ghavami
- Academy of Silesia, Faculty of Medicine, Rolna 43, 40-555 Katowice, Poland
- Research Institute of Oncology and Hematology, Cancer Care Manitoba-University of Manitoba, Winnipeg, MB R3E 0V9, Canada
- Children Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB R3E 0V9, Canada
| | - Atefeh Zarepour
- Department of Biomedical Engineering, Faculty of Engineering & Natural Sciences, Istinye University, Istanbul 34396, Türkiye;
| | - Ali Zarrabi
- Department of Biomedical Engineering, Faculty of Engineering & Natural Sciences, Istinye University, Istanbul 34396, Türkiye;
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5
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Zeng C, Wang S, Gu H, Chen F, Wang Z, Li J, Xie Z, Feng P, Shen H, Wu Y. Galangin mitigates glucocorticoid-induced osteoporosis by activating autophagy of BMSCs via triggering the PKA/CREB signaling pathway. Acta Biochim Biophys Sin (Shanghai) 2023; 55:1275-1287. [PMID: 37365870 PMCID: PMC10448057 DOI: 10.3724/abbs.2023063] [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: 12/13/2022] [Accepted: 02/20/2023] [Indexed: 04/05/2023] Open
Abstract
Glucocorticoid-induced osteoporosis (GIOP), one of the most common and serious adverse effects associated with glucocorticoid administration, manifests as decreased bone formation and increased bone resorption, eventually culminating in bone loss. Galangin (GAL) is a flavonoid extracted from the medicinal herbal galangal that possesses a variety of pharmacological activities and can inhibit osteoclastogenesis. However, the effects of GAL on GIOP remain unclear. Our study aims to explore the effects of GAL on GIOP in mice and the underlying mechanism. Our results show that GAL markedly mitigates the severity of dexamethasone (Dex)-induced osteoporosis in mice and potentiates osteogenic differentiation in mouse bone marrow-derived mesenchymal stem cells (BMSCs). Furthermore, GAL also significantly counteracts Dex-mediated suppression of osteogenic differentiation and autophagy in human BMSCs. GAL augments PKA/CREB-mediated autophagic flux in BMSCs and the bones of osteoporotic mice. GAL-mediated osteogenic differentiation in Dex-treated BMSCs is significantly decreased by the PKA inhibitor H89 and autophagy inhibitor 3-methyladenine. Collectively, our data indicate that GAL can ameliorate GIOP, partly by augmenting the mineralization of BMSCs by potentiating PKA/CREB-mediated autophagic flux, highlighting its potential therapeutic use in treating glucocorticoid-related osteoporosis.
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Affiliation(s)
- Chenying Zeng
- Center for BiotherapyEighth Affiliated Hospital of Sun Yat-sen UniversityShenzhen518033China
| | - Shan Wang
- Center for BiotherapyEighth Affiliated Hospital of Sun Yat-sen UniversityShenzhen518033China
| | - Huimin Gu
- Center for BiotherapyEighth Affiliated Hospital of Sun Yat-sen UniversityShenzhen518033China
| | - Fenglei Chen
- Department of OrthopedicsEighth Affiliated Hospital of Sun Yat-sen UniversityShenzhen518033China
| | - Ziming Wang
- Department of OrthopedicsEighth Affiliated Hospital of Sun Yat-sen UniversityShenzhen518033China
| | - Jinteng Li
- Department of OrthopedicsEighth Affiliated Hospital of Sun Yat-sen UniversityShenzhen518033China
| | - Zhongyu Xie
- Department of OrthopedicsEighth Affiliated Hospital of Sun Yat-sen UniversityShenzhen518033China
| | - Pei Feng
- Center for BiotherapyEighth Affiliated Hospital of Sun Yat-sen UniversityShenzhen518033China
| | - Huiyong Shen
- Department of OrthopedicsEighth Affiliated Hospital of Sun Yat-sen UniversityShenzhen518033China
- Department of OrthopedicsSun Yat-sen Memorial Hospital of Sun Yat-sen UniversityGuangzhou510120China
| | - Yanfeng Wu
- Center for BiotherapyEighth Affiliated Hospital of Sun Yat-sen UniversityShenzhen518033China
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6
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Wang J, Zhang Y, Cao J, Wang Y, Anwar N, Zhang Z, Zhang D, Ma Y, Xiao Y, Xiao L, Wang X. The role of autophagy in bone metabolism and clinical significance. Autophagy 2023:1-19. [PMID: 36858962 PMCID: PMC10392742 DOI: 10.1080/15548627.2023.2186112] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
The skeletal system is the basis of the vertebral body composition, which affords stabilization sites for muscle attachment, protects vital organs, stores mineral ions, supplies places to the hematopoietic system, and participates in complex endocrine and immune system. Not surprisingly, bones are constantly reabsorbed, formed, and remodeled under physiological conditions. Once bone metabolic homeostasis is interrupted (including inflammation, tumors, fractures, and bone metabolic diseases), the body rapidly initiates bone regeneration to maintain bone tissue structure and quality. Macroautophagy/autophagy is an essential metabolic process in eukaryotic cells, which maintains metabolic energy homeostasis and plays a vital role in bone regeneration by controlling molecular degradation and organelle renewal. One relatively new observation is that mesenchymal cells, osteoblasts, osteoclasts, osteocytes, chondrocytes, and vascularization process exhibit autophagy, and the molecular mechanisms and targets involved are being explored and updated. The role of autophagy is also emerging in degenerative diseases (intervertebral disc degeneration [IVDD], osteoarthritis [OA], etc.) and bone metabolic diseases (osteoporosis [OP], osteitis deformans, osteosclerosis). The use of autophagy regulators to modulate autophagy has benefited bone regeneration, including MTOR (mechanistic target of rapamycin kinase) inhibitors, AMPK activators, and emerging phytochemicals. The application of biomaterials (especially nanomaterials) to trigger autophagy is also an attractive research direction, which can exert superior therapeutic properties from the material-loaded molecules/drugs or the material's properties such as shape, roughness, surface chemistry, etc. All of these have essential clinical significance with the discovery of autophagy associated signals, pathways, mechanisms, and treatments in bone diseases in the future.Abbreviations: Δψm: mitochondrial transmembrane potential AMPK: AMP-activated protein kinase ARO: autosomal recessive osteosclerosis ATF4: activating transcription factor 4 ATG: autophagy-related β-ECD: β-ecdysone BMSC: bone marrow mesenchymal stem cell ER: endoplasmic reticulum FOXO: forkhead box O GC: glucocorticoid HIF1A/HIF-1α: hypoxia inducible factor 1 subunit alpha HSC: hematopoietic stem cell HSP: heat shock protein IGF1: insulin like growth factor 1 IL1B/IL-1β: interleukin 1 beta IVDD: intervertebral disc degradation LPS: lipopolysaccharide MAPK: mitogen-activated protein kinase MSC: mesenchymal stem cell MTOR: mechanistic target of rapamycin kinase NP: nucleus pulposus NPWT: negative pressure wound therapy OA: osteoarthritis OP: osteoporosis PTH: parathyroid hormone ROS: reactive oxygen species SIRT1: sirtuin 1 SIRT3: sirtuin 3 SQSTM1/p62: sequestosome 1 TNFRSF11B/OPG: TNF receptor superfamily member 11b TNFRSF11A/RANK: tumor necrosis factor receptor superfamily, member 11a TNFSF11/RANKL: tumor necrosis factor (ligand) superfamily, member 11 TSC1: tuberous sclerosis complex 1 ULK1: unc-51 like autophagy activating kinase 1.
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Affiliation(s)
- Jing Wang
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, People's Republic of China
| | - Yi Zhang
- Department of Hygiene Toxicology, School of Public Health, Zunyi Medical University, Zunyi, Guizhou, People's Republic of China
| | - Jin Cao
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, People's Republic of China
| | - Yi Wang
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, People's Republic of China
| | - Nadia Anwar
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, People's Republic of China
| | - Zihan Zhang
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, People's Republic of China
| | - Dingmei Zhang
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, People's Republic of China
| | - Yaping Ma
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, People's Republic of China
| | - Yin Xiao
- Australia-China Centre for Tissue Engineering and Regenerative Medicine, Queensland University of Technology, Brisbane, Queensland, Australia.,School of Medicine and Dentistry & Menzies Health Institute Queensland, Griffith University, Queensland, Australia
| | - Lan Xiao
- School of Mechanical, Medical and Process Engineering, Centre for Biomedical Technologies, Queensland University of Technology, Brisbane, Australia.,Australia-China Centre for Tissue Engineering and Regenerative Medicine, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Xin Wang
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, People's Republic of China.,School of Mechanical, Medical and Process Engineering, Centre for Biomedical Technologies, Queensland University of Technology, Brisbane, Australia.,Australia-China Centre for Tissue Engineering and Regenerative Medicine, Queensland University of Technology, Brisbane, Queensland, Australia
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7
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Huang J, Zhou H, He L, Zhong L, Zhou D, Yin Z. The promotive role of USP1 inhibition in coordinating osteogenic differentiation and fracture healing during nonunion. J Orthop Surg Res 2023; 18:152. [PMID: 36859264 PMCID: PMC9979441 DOI: 10.1186/s13018-023-03594-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 02/08/2023] [Indexed: 03/03/2023] Open
Abstract
BACKGROUND Nonunion is a failure of fracture healing and a major complication after fractures. Ubiquitin-specific protease 1 (USP1) is a deubiquitinase that involved in cell differentiation and cell response to DNA damage. Herein we investigated the expression, function and mechanism of USP1 in nonunion. METHODS AND RESULTS Clinical samples were used to detect the USP1 expression in nonunion. ML323 was selected to inhibit USP1 expression throughout the study. Rat models and mouse embryonic osteoblasts cells (MC3T3-E1) were used to investigate the effects of USP1 inhibition on fracture healing and osteogenesis in vivo and in vitro, respectively. Histological changes were examined by micro-computerized tomography (Micro-CT), hematoxylin & eosin (H&E) staining and Masson staining. Alkaline phosphatase (ALP) activity detection and alizarin red staining were used for osteogenic differentiation observation. The expression of related factors was detected by quantitative real-time PCR, western blot or immunohistochemistry (IHC). It was shown that USP1 was highly expressed in nonunion patients and nonunion rats. USP1 inhibition by ML323 promoted fracture healing in nonunion rats and facilitated the expression of osteogenesis-related factors and the signaling of PI3K/Akt pathway. In addition, USP1 inhibition accelerated osteogenic differentiation and promoting PI3K/Akt signaling in MC3T3-E1 cells. CONCLUSIONS USP1 inhibition plays a promotive role in coordinating osteogenic differentiation and fracture healing during nonunion. PI3K/Akt may be the downstream pathway of USP1.
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Affiliation(s)
- Jun Huang
- The Microscopic Repair and Reconstruction Department of Hand and Foot, Department of Orthopedics, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui Province, China
| | - Hongxiang Zhou
- The Microscopic Repair and Reconstruction Department of Hand and Foot, Department of Orthopedics, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui Province, China
| | - Liang He
- The Microscopic Repair and Reconstruction Department of Hand and Foot, Department of Orthopedics, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui Province, China
| | - Lin Zhong
- The Microscopic Repair and Reconstruction Department of Hand and Foot, Department of Orthopedics, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui Province, China
| | - Ding Zhou
- The Microscopic Repair and Reconstruction Department of Hand and Foot, Department of Orthopedics, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui Province, China
| | - Zongsheng Yin
- Department of Orthopedics, the First Affiliated Hospital of Anhui Medical University, No. 218, Jixi Road, Hefei, 230022, Anhui Province, China.
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8
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Xin L, Wen Y, Song J, Chen T, Zhai Q. Bone regeneration strategies based on organelle homeostasis of mesenchymal stem cells. Front Endocrinol (Lausanne) 2023; 14:1151691. [PMID: 37033227 PMCID: PMC10081449 DOI: 10.3389/fendo.2023.1151691] [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: 01/26/2023] [Accepted: 03/06/2023] [Indexed: 04/11/2023] Open
Abstract
The organelle modulation has emerged as a crucial contributor to the organismal homeostasis. The mesenchymal stem cells (MSCs), with their putative functions in maintaining the regeneration ability of adult tissues, have been identified as a major driver to underlie skeletal health. Bone is a structural and endocrine organ, in which the organelle regulation on mesenchymal stem cells (MSCs) function has most been discovered recently. Furthermore, potential treatments to control bone regeneration are developing using organelle-targeted techniques based on manipulating MSCs osteogenesis. In this review, we summarize the most current understanding of organelle regulation on MSCs in bone homeostasis, and to outline mechanistic insights as well as organelle-targeted approaches for accelerated bone regeneration.
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Affiliation(s)
- Liangjing Xin
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Yao Wen
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Jinlin Song
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
- *Correspondence: Qiming Zhai, ; Tao Chen, ; Jinlin Song,
| | - Tao Chen
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
- *Correspondence: Qiming Zhai, ; Tao Chen, ; Jinlin Song,
| | - Qiming Zhai
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
- *Correspondence: Qiming Zhai, ; Tao Chen, ; Jinlin Song,
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9
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Yun HM, Lee JY, Kim B, Park KR. Suffruticosol B Is an Osteogenic Inducer through Osteoblast Differentiation, Autophagy, Adhesion, and Migration. Int J Mol Sci 2022; 23:ijms232113559. [PMID: 36362346 PMCID: PMC9658763 DOI: 10.3390/ijms232113559] [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: 09/25/2022] [Revised: 10/28/2022] [Accepted: 11/03/2022] [Indexed: 11/09/2022] Open
Abstract
Suffruticosol B (Suf-B) is a stilbene found in Paeonia suffruticosa ANDR., which has been traditionally used in medicine. Stilbenes and their derivatives possess various pharmacological effects, such as anticancer, anti-inflammatory, and anti-osteoporotic activities. This study aimed to explore the bone-forming activities and mechanisms of Suf-B in pre-osteoblasts. Herein, >99.9% pure Suf-B was isolated from P. suffruticosa methanolic extracts. High concentrations of Suf-B were cytotoxic, whereas low concentrations did not affect cytotoxicity in pre-osteoblasts. Under zero levels of cytotoxicity, Suf-B exhibited bone-forming abilities by enhancing alkaline phosphatase enzyme activities, bone matrix calcification, and expression levels with non-collagenous proteins. Suf-B induces intracellular signal transduction, leading to nuclear RUNX2 expression. Suf-B-stimulated differentiation showed increases in autophagy proteins and autophagosomes, as well as enhancement of osteoblast adhesion and transmigration on the ECM. These results indicate that Suf-B has osteogenic qualities related to differentiation, autophagy, adhesion, and migration. This also suggests that Suf-B could have a therapeutic effect as a phytomedicine in skeletal disorders.
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Affiliation(s)
- Hyung-Mun Yun
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Kyung Hee University, Seoul 02447, Korea
| | - Joon Yeop Lee
- National Development Institute for Korean Medicine, Gyeongsan 38540, Korea
| | - Bomi Kim
- National Development Institute for Korean Medicine, Gyeongsan 38540, Korea
| | - Kyung-Ran Park
- Gwangju Center, Korea Basic Science Institute (KBSI), Gwangju 61751, Korea
- Correspondence: ; Tel.: +82-62-712-4412; Fax: +82-62-372-4102
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10
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Yin Y, Tian BM, Li X, Yu YC, Deng DK, Sun LJ, Qu HL, Wu RX, Xu XY, Sun HH, An Y, He XT, Chen FM. Gold nanoparticles targeting the autophagy-lysosome system to combat the inflammation-compromised osteogenic potential of periodontal ligament stem cells: From mechanism to therapy. Biomaterials 2022; 288:121743. [PMID: 36030103 DOI: 10.1016/j.biomaterials.2022.121743] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 08/02/2022] [Accepted: 08/09/2022] [Indexed: 12/09/2022]
Abstract
Although substantial data indicate that the osteogenic potential of periodontal ligament stem cells (PDLSCs) is compromised under inflammatory conditions, the underlying mechanism remains largely unexplored. In this study, we found that both the autophagy levels and autophagic flux levels were decreased in PDLSCs incubated under inflammatory conditions (I-PDLSCs). Based on the increased expression of LC3 II (at an autophagy level) and decreased accumulation of LC3 II (at an autophagic flux level) in I-PDLSCs, we speculated that the disruption of I-PDLSC autophagy arose from dysfunction of the cellular autophagy-lysosome system. Subsequently, our hypothesis was demonstrated by inhibited autophagosome-lysosome fusion, damaged lysosomal function, and suppressed activation of transcription factor EB (TFEB, a master regulator of the autophagy-lysosome system) in I-PDLSCs and verified by TFEB overexpression in I-PDLSCs. We found that gold nanoparticle (Au NP) treatment rescued the osteogenic potential of I-PDLSCs by restoring the inflammation-compromised autophagy-lysosome system. In this context, Au NP ceased to be effective when TFEB was knocked down in PDLSCs. Our data demonstrate the crucial role of the autophagy-lysosome system in cellular osteogenesis under inflammatory conditions and suggest a new target for rescuing inflammation-induced cell dysfunction using nanomaterials to aid cell biology and tissue regeneration.
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Affiliation(s)
- Yuan Yin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Bei-Min Tian
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Xuan Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Yao-Cheng Yu
- Department of Thyroid, Breast and Vascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Dao-Kun Deng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Li-Juan Sun
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Hong-Lei Qu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Rui-Xin Wu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Xin-Yue Xu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Hai-Hua Sun
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Ying An
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Xiao-Tao He
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China.
| | - Fa-Ming Chen
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China.
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11
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Park KR, Kim B, Lee JY, Moon HJ, Kwon IK, Yun HM. Effects of Scoparone on differentiation, adhesion, migration, autophagy and mineralization through the osteogenic signalling pathways. J Cell Mol Med 2022; 26:4520-4529. [PMID: 35796406 PMCID: PMC9357629 DOI: 10.1111/jcmm.17476] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 05/30/2022] [Accepted: 06/15/2022] [Indexed: 12/18/2022] Open
Abstract
Scoparone (SCOP), an active and efficient coumarin compound derived from Artemisia capillaris Thunb, has been used as a traditional Chinese herbal medicine. Herein, we investigated the effects of SCOP on the osteogenic processes using MC3T3‐E1 pre‐osteoblasts in in vitro cell systems. SCOP (C11H10O4, > 99.17%) was purified and identified from A. capillaries. SCOP (0.1 to 100 μM concentrations) did not have cytotoxic effects in pre‐osteoblasts; however, it promoted alkaline phosphatase (ALP) staining and activity, and mineralized nodule formation under early and late osteogenic induction. SCOP elevated osteogenic signals through the bone morphogenetic protein 2 (BMP2)‐Smad1/5/8 pathway, leading to the increased expression of runt‐related transcription factor 2 (RUNX2) with its target protein, matrix metallopeptidase 13 (MMP13). SCOP also induced the non‐canonical BMP2‐MAPKs pathway, but not the Wnt3a‐β‐catenin pathway. Moreover, SCOP promoted autophagy, migration and adhesion under the osteogenic induction. Overall, the findings of this study demonstrated that SCOP has osteogenic effects associated with cell differentiation, adhesion, migration, autophagy and mineralization.
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Affiliation(s)
- Kyung-Ran Park
- Gwangju Center, Korea Basic Science Institute (KBSI), Gwangju, Korea
| | - Bomi Kim
- National Development Institute of Korean Medicine, Gyeongsan, Korea
| | - Joon Yeop Lee
- National Development Institute of Korean Medicine, Gyeongsan, Korea
| | - Ho-Jin Moon
- Department of Dental Materials, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Il Keun Kwon
- Department of Dental Materials, School of Dentistry, Kyung Hee University, Seoul, Korea.,Medical Device Research Center, Medical Science Research Institute, Kyung Hee University Medical Center, Seoul, Korea
| | - Hyung-Mun Yun
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Kyung Hee University, Seoul, Korea
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12
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Qiu L, Zhu Z, Peng F, Zhang C, Xie J, Zhou R, Zhang Y, Li M. Li-Doped Ti Surface for the Improvement of Osteointegration. ACS OMEGA 2022; 7:12030-12038. [PMID: 35449902 PMCID: PMC9016885 DOI: 10.1021/acsomega.2c00229] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 03/24/2022] [Indexed: 06/14/2023]
Abstract
Aseptic loosening is the main factor that leads to the failure of orthopedic implants. Enhancing the early osteointegration of a bone implant can lower the risk of aseptic loosening. Here, a Li-doped surface was constructed on a Ti surface via plasma electrolytic oxidation (PEO) to improve osteointegration. The prepared Li-doped PEO coating showed a porous morphology and the sustained release of Li ions. In vitro results of rat bone marrow mesenchymal stem cell (rBMSC) culture studies suggested that the Li-doped Ti surface significantly favored cell adhesion. Moreover, it was found that the Li-doped surface enhanced alkaline phosphatase activity and extracellular matrix mineralization of rBMSCs. In addition, the surface improved the expression of osteogenesis-related genes. Furthermore, a bone implantation model indicated that the Li-doped Ti surface showed improved osteointegration. The incorporation of Li into a Ti surface is a promising method for orthopedic applications.
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Affiliation(s)
- Longhai Qiu
- The
Second School of Clinical Medicine, Southern
Medical University, Guangzhou 510515, China
- Medical
Research Center, Department of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy
of Medical Sciences, Guangzhou 510080, China
- Department
of Traumatology and Orthopaedic Surgery, Institute of Orthopaedics, Huizhou Municipal Central Hospital, Huizhou, Guangdong 516001, China
| | - Zhanbei Zhu
- Medical
Research Center, Department of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy
of Medical Sciences, Guangzhou 510080, China
| | - Feng Peng
- Medical
Research Center, Department of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy
of Medical Sciences, Guangzhou 510080, China
| | - Chi Zhang
- Medical
Research Center, Department of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy
of Medical Sciences, Guangzhou 510080, China
| | - Juning Xie
- Medical
Research Center, Department of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy
of Medical Sciences, Guangzhou 510080, China
| | - Ruixiang Zhou
- Medical
Research Center, Department of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy
of Medical Sciences, Guangzhou 510080, China
| | - Yu Zhang
- The
Second School of Clinical Medicine, Southern
Medical University, Guangzhou 510515, China
- Medical
Research Center, Department of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy
of Medical Sciences, Guangzhou 510080, China
| | - Mei Li
- Medical
Research Center, Department of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy
of Medical Sciences, Guangzhou 510080, China
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Vitamin D 3/vitamin K 2/magnesium-loaded polylactic acid/tricalcium phosphate/polycaprolactone composite nanofibers demonstrated osteoinductive effect by increasing Runx2 via Wnt/β-catenin pathway. Int J Biol Macromol 2021; 190:244-258. [PMID: 34492244 DOI: 10.1016/j.ijbiomac.2021.08.196] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/15/2021] [Accepted: 08/26/2021] [Indexed: 11/22/2022]
Abstract
Vitamin D3, vitamin K2, and Mg (10%, 1.25%, and 5%, w/w, respectively)-loaded PLA (12%, w/v) (TCP (5%, w/v))/PCL (12%, w/v) 1:1 (v/v) composite nanofibers (DKMF) were produced by electrospinning method (ES) and their osteoinductive effects were investigated in cell culture test. Neither pure nanofibers nor DKMF caused a significant cytotoxic effect in fibroblasts. The induction of the stem cell differentiation into osteogenic cells was observed in the cell culture with both DKMF and pure nanofibers, separately. Vitamin D3, vitamin K2, and magnesium demonstrated to support the osteogenic differentiation of mesenchymal stem cells by expressing Runx2, BMP2, and osteopontin and suppressing PPAR-γ and Sox9. Therefore, the Wnt/β-catenin signaling pathway was activated by DKMF. DKMF promoted large axonal sprouting and needle-like elongation of osteoblast cells and enhanced cellular functions such as migration, infiltration, proliferation, and differentiation after seven days of incubation using confocal laser scanning microscopy. The results showed that DKMF demonstrated sustained drug release for 144 h, tougher and stronger structure, higher tensile strength, increased water up-take capacity, decreased degradation ratio, and slightly lower Tm and Tg values compared to pure nanofibers. Consequently, DKMF is a promising treatment approach in bone tissue engineering due to its osteoinductive effects.
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14
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Rao P, Lou F, Luo D, Huang C, Huang K, Yao Z, Xiao J. Decreased autophagy impairs osteogenic differentiation of adipose-derived stem cells via Notch signaling in diabetic osteoporosis mice. Cell Signal 2021; 87:110138. [PMID: 34461277 DOI: 10.1016/j.cellsig.2021.110138] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/23/2021] [Accepted: 08/25/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND The osteogenic differentiation ability of adipose-derived stem cells (ASCs) is attenuated in type 2 diabetic osteoporosis (Dop) mice. Several studies suggest autophagy and Notch signaling pathway play vital roles in cell proliferation, differentiation, and osteogenesis. However, the mechanisms of autophagy and Notch signaling in the osteogenic differentiation of Dop ASCs were unclear. Thus, it is meaningful to reveal potential correlations between autophagy, Notch signaling, and osteogenesis, and explore involved molecular mechanisms in Dop ASCs. MATERIALS AND METHODS The diabetic osteoporosis C57BL/6 mouse model, which was confirmed by micro-CT and HE & Masson staining, was established through high-sugar and high-fat diet and streptozotocin injection. ASCs were obtained from the inguinal subcutaneous fat of Dop mice. The multi-differentiation potential of ASCs was evaluated by staining with Alizarin Red (osteogenesis), Oil Red O (adipogenesis), and Alcian blue (chondrogenesis). Cell viability was assessed by Cell Counting Kit-8 assay. Torin1, an inhibitor of mTOR, was used to stimulate the autophagy signaling pathway. DAPT, a γ-secretase inhibitor, was used to suppress Notch signaling pathway activity. Gene and protein expression of autophagy, Notch signaling pathway, and osteogenic factors were detected by real-time quantitative PCR, western blot, and immunofluorescence microscopy. RESULTS Our findings showed autophagy and osteogenic differentiation ability of Dop ASCs exhibited downward trends that were both rescued by Torin1. Notch signaling was suppressed in Dop ASCs, but upregulated when autophagy was activated. After activation of autophagy, DAPT treatment led to decreased Notch signaling pathway activation and attenuated osteogenic differentiation ability in Dop ASCs. CONCLUSIONS Downregulated autophagy suppressed Notch signaling, leading to a reduced osteogenic differentiation capacity of Dop ASCs, and Torin1 can rescue this process by activating autophagy. Our findings contribute to understanding the mechanism underlying impairment of the osteogenic differentiation ability of Dop ASCs.
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Affiliation(s)
- Pengcheng Rao
- Orofacial Reconstruction and Regeneration Laboratory, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, China; Department of Oral and Maxillofacial Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Fangzhi Lou
- Orofacial Reconstruction and Regeneration Laboratory, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, China; Department of Oral Implantology, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, China
| | - Daowen Luo
- Orofacial Reconstruction and Regeneration Laboratory, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, China
| | - Chenglong Huang
- Orofacial Reconstruction and Regeneration Laboratory, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, China
| | - Kui Huang
- Orofacial Reconstruction and Regeneration Laboratory, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, China
| | - Zhihao Yao
- Orofacial Reconstruction and Regeneration Laboratory, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, China
| | - Jingang Xiao
- Orofacial Reconstruction and Regeneration Laboratory, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, China; Department of Oral and Maxillofacial Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China; Department of Oral Implantology, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, China; Department of Oral and Maxillofacial Surgery, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, China.
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15
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MiR-206 regulates the progression of osteoporosis via targeting HDAC4. Eur J Med Res 2021; 26:8. [PMID: 33461610 PMCID: PMC7812640 DOI: 10.1186/s40001-021-00480-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 01/06/2021] [Indexed: 11/16/2022] Open
Abstract
Background More and more studies have confirmed that miRNAs play an important role in maintaining bone remodeling and bone metabolism. This study investigated the expression level of miR-206 in the serum of osteoporosis (OP) patients and explored the effect and mechanism of miR-206 on the occurrence and development of osteoporosis. Methods 120 postmenopausal women were recruited, including 63 cases with OP and 57 women without OP. The levels of miR-206 were determined by qRT-PCR technology. Spearman correlation coefficient was used to evaluate the correlation of miR-206 with bone mineral density (BMD). An ROC curve was used to evaluate the diagnostic value of miR-206 in osteoporosis. The effects of miR-206 on cell proliferation and cell apoptosis of hFOBs were measured by CCK-8 assay and flow cytometry, respectively. Luciferase reporter gene assay was used to confirm the interaction of miR-206 and the 3′UTR of HDAC4. Results Serum miR-206 had low expression level in osteoporosis patient group compared with control group. The expression level of serum miR-206 had diagnostic value for osteoporosis, and the serum miR-206 levels were positively correlated with BMD. The down-regulated miR-206 could inhibit cell proliferation and promote cell apoptosis. Luciferase analysis indicated that HDAC4 was the target gene of miR-206. Conclusions MiR-206 could be used as a new potential diagnostic biomarker for osteoporosis, and in in vitro cell experiments, miR-206 may regulate osteoblast cell proliferation and apoptosis by targeting HDAC4.
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