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Cheng X, Tian W, Yang J, Wang J, Zhang Y. Engineering approaches to manipulate osteoclast behavior for bone regeneration. Mater Today Bio 2024; 26:101043. [PMID: 38600918 PMCID: PMC11004223 DOI: 10.1016/j.mtbio.2024.101043] [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: 01/03/2024] [Revised: 03/25/2024] [Accepted: 03/28/2024] [Indexed: 04/12/2024] Open
Abstract
Extensive research has delved into the multifaceted roles of osteoclasts beyond their traditional function in bone resorption in recent years, uncovering their significant influence on bone formation. This shift in understanding has spurred investigations into engineering strategies aimed at leveraging osteoclasts to not only inhibit bone resorption but also facilitate bone regeneration. This review seeks to comprehensively examine the mechanisms by which osteoclasts impact bone metabolism. Additionally, it explores various engineering methodologies, including the modification of bioactive material properties, localized drug delivery, and the introduction of exogenous cells, assessing their potential and mechanisms in aiding bone repair by targeting osteoclasts. Finally, the review proposes current limitations and future routes for manipulating osteoclasts through biological and material cues to facilitate bone repair.
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Affiliation(s)
- Xin Cheng
- Department of Stomatology, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, 1098 Xueyuan Road, Shenzhen 518055, Guangdong Province, China
| | - Wenzhi Tian
- Jilin University, Jilin Province Key Lab Tooth Dev & Bone Remodeling, School and Hospital of Stomatology, Department of Oral Pathology, Changchun 130041, Jilin Province, China
| | - Jianhua Yang
- Longgang District People's Hospital of Shenzhen & the Second Affiliated Hospital, The Chinese University of Hong Kong, Shenzhen 518172, Guangdong province, China
| | - Jiamian Wang
- National Innovation Center for Advanced Medical Devices, Shenzhen 518000, Guangdong Province, China
| | - Yang Zhang
- School of Dentistry, Shenzhen University Medical School, 1088 Xueyuan Road, Shenzhen 518055, Guangdong Province, China
- School of Biomedical Engineering, Shenzhen University Medical School, 1088 Xueyuan Road, Shenzhen 518055, Guangdong Province, China
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Xu X, Wang J, Xia Y, Yin Y, Zhu T, Chen F, Hai C. Autophagy, a double-edged sword for oral tissue regeneration. J Adv Res 2024; 59:141-159. [PMID: 37356803 PMCID: PMC11081970 DOI: 10.1016/j.jare.2023.06.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/10/2023] [Accepted: 06/20/2023] [Indexed: 06/27/2023] Open
Abstract
BACKGROUND Oral health is of fundamental importance to maintain systemic health in humans. Stem cell-based oral tissue regeneration is a promising strategy to achieve the recovery of impaired oral tissue. As a highly conserved process of lysosomal degradation, autophagy induction regulates stem cell function physiologically and pathologically. Autophagy activation can serve as a cytoprotective mechanism in stressful environments, while insufficient or over-activation may also lead to cell function dysregulation and cell death. AIM OF REVIEW This review focuses on the effects of autophagy on stem cell function and oral tissue regeneration, with particular emphasis on diverse roles of autophagy in different oral tissues, including periodontal tissue, bone tissue, dentin pulp tissue, oral mucosa, salivary gland, maxillofacial muscle, temporomandibular joint, etc. Additionally, this review introduces the molecular mechanisms involved in autophagy during the regeneration of different parts of oral tissue, and how autophagy can be regulated by small molecule drugs, biomaterials, exosomes/RNAs or other specific treatments. Finally, this review discusses new perspectives for autophagy manipulation and oral tissue regeneration. KEY SCIENTIFIC CONCEPTS OF REVIEW Overall, this review emphasizes the contribution of autophagy to oral tissue regeneration and highlights the possible approaches for regulating autophagy to promote the regeneration of human oral tissue.
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Affiliation(s)
- Xinyue Xu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, PR China; Shaanxi Key Lab of Free Radical Biology and Medicine, Fourth Military Medical University, Xi'an, PR China
| | - Jia Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, PR China
| | - Yunlong Xia
- Shaanxi Key Lab of Free Radical Biology and Medicine, Fourth Military Medical University, Xi'an, PR China; Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Yuan Yin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, PR China
| | - Tianxiao Zhu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, PR China; Shaanxi Key Lab of Free Radical Biology and Medicine, Fourth Military Medical University, Xi'an, PR China
| | - Faming Chen
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, PR China
| | - Chunxu Hai
- Shaanxi Key Lab of Free Radical Biology and Medicine, Fourth Military Medical University, Xi'an, PR China.
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Li Y, Liu W, Zhao R, An Y, Zhang M, Ren X, He H. Yunnan Baiyao Inhibits Periodontitis by Suppressing the Autophagic Flux. Int Dent J 2024; 74:284-293. [PMID: 37852809 PMCID: PMC10988253 DOI: 10.1016/j.identj.2023.09.005] [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: 07/26/2023] [Revised: 09/12/2023] [Accepted: 09/20/2023] [Indexed: 10/20/2023] Open
Abstract
BACKGROUND Yunnan Baiyao (YNBY), a traditional Chinese medicine, is renowned for its anti-inflammatory properties. Recent studies have suggested that YNBY plays a significant role in inhibiting osteoclast differentiation and autophagy, which are essential processes in inflammation and bone resorption associated with periodontitis. However, the precise relationship between autophagy and the mechanism by which YNBY inhibits osteoclastogenesis remains unexplored.The primary objective of this study was to investigate the inhibitory effects of YNBY on the process of osteoclastogenesis and its potential in preventing inflammatory bone loss. METHODS The animals were subjected to sacrifice at intervals of 2, 4, and 6 weeks postintervention whilst under deep anaesthesia, and specimens were subsequently collected. The specimens were subjected to hematoxylin and eosin (HE) staining, in addition to tartrate-resistant acid phosphatase (TRAP) staining and subsequently imaged employing a digital scanner. The confirmation of osteoclast (OC) differentiation and autophagic flux was achieved through various techniques, including western blotting, transmission electron microscopy (TEM), TRAP staining, pit formation assay, and immunofluorescence. RESULTS The microcomputed tomography images provided evidence of the effective inhibition of alveolar bone absorption at 2, 4, and 6 weeks following YNBY treatment. Additionally, the histomorphometric evaluations of tissue segments stained with HE and TRAP, which involved measuring the distance between the alveolar bone crest (ABC) and cementoenamel junction (CEJ) and quantifying TRAP-positive OCs, yielded comparable results to those obtained through computed tomography analysis. YNBY treatment resulted in a decrease in the CEJ-ABC distance and inhibition of OC differentiation. Furthermore, in vitro studies showed that the autophagy modulators rapamycin (RAP) and 3-methyladenine (3-MA) significantly affected OC differentiation and function. YNBY attenuated the impact of RAP on the differentiation of OCs, autophagy-related factor activation, and bone resorption. CONCLUSIONS We hypothesise that YNBY suppresses the differentiation of OC and bone resorption by blocking autophagy. This study reveals that targeting autophagy might be a new alternative treatment methodology for periodontitis treatment.
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Affiliation(s)
- Yanjie Li
- Department of Periodontology, Kunming Medical University and Hospital of Stomatology, Kunming, China; Yunnan Key Laboratory of Stomatology, Kunming, China
| | - Wang Liu
- Department of Periodontology, Kunming Medical University and Hospital of Stomatology, Kunming, China; Yunnan Key Laboratory of Stomatology, Kunming, China
| | - Ruoyu Zhao
- Department of Periodontology, Kunming Medical University and Hospital of Stomatology, Kunming, China; Yunnan Key Laboratory of Stomatology, Kunming, China
| | - Yuanyuan An
- Department of Periodontology, Kunming Medical University and Hospital of Stomatology, Kunming, China; Yunnan Key Laboratory of Stomatology, Kunming, China
| | - Mingzhu Zhang
- Department of Periodontology, Kunming Medical University and Hospital of Stomatology, Kunming, China; Yunnan Key Laboratory of Stomatology, Kunming, China
| | - Xiaobin Ren
- Department of Periodontology, Kunming Medical University and Hospital of Stomatology, Kunming, China; Yunnan Key Laboratory of Stomatology, Kunming, China
| | - Hongbing He
- Department of Periodontology, Kunming Medical University and Hospital of Stomatology, Kunming, China; Yunnan Key Laboratory of Stomatology, Kunming, China.
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İnan S, Barış E. The role of autophagy in odontogenesis, dental implant surgery, periapical and periodontal diseases. J Cell Mol Med 2024; 28:e18297. [PMID: 38613351 PMCID: PMC11015398 DOI: 10.1111/jcmm.18297] [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: 10/31/2023] [Revised: 03/03/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
Autophagy is a cellular process that is evolutionarily conserved, involving the sequestration of damaged organelles and proteins into autophagic vesicles, which subsequently fuse with lysosomes for degradation. Autophagy controls the development of many diseases by influencing apoptosis, inflammation, the immune response and different cellular processes. Autophagy plays a significant role in the aetiology of disorders associated with dentistry. Autophagy controls odontogenesis. Furthermore, it is implicated in the pathophysiology of pulpitis and periapical disorders. It enhances the survival, penetration and colonization of periodontal pathogenic bacteria into the host periodontal tissues and facilitates their escape from host defences. Autophagy plays a crucial role in mitigating exaggerated inflammatory reactions within the host's system during instances of infection and inflammation. Autophagy also plays a role in the relationship between periodontal disease and systemic diseases. Autophagy promotes wound healing and may enhance implant osseointegration. This study reviews autophagy's dento-alveolar effects, focusing on its role in odontogenesis, periapical diseases, periodontal diseases and dental implant surgery, providing valuable insights for dentists on tooth development and dental applications. A thorough examination of autophagy has the potential to discover novel and efficacious treatment targets within the field of dentistry.
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Affiliation(s)
- Sevinç İnan
- Department of Oral Pathology, Faculty of DentistryGazi UniversityAnkaraTurkey
| | - Emre Barış
- Department of Oral Pathology, Faculty of DentistryGazi UniversityAnkaraTurkey
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Issa DR, Nassar M, Elamrousy W. Immediately placed implants using simvastatin and autogenous tooth graft combination in periodontally compromised sites: a randomized controlled clinical trial. Clin Oral Investig 2024; 28:210. [PMID: 38467945 DOI: 10.1007/s00784-024-05596-4] [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: 12/20/2023] [Accepted: 02/28/2024] [Indexed: 03/13/2024]
Abstract
OBJECTIVES The present study aimed to assess clinically and radiographically the usage of autogenous tooth bone graft (ATBG) combined with and without Simvastatin (SMV) around immediately placed dental implants in periodontally compromised sites. METHODS Thirty-nine patients required a single extraction of periodontally compromised tooth were divided into three groups (13 patients each). Group I received immediate implant placement (IIP) without grafting. Group II received IIP with ATBG filling the gap around IIP. Group III received SMV gel mixed with ATBG around IIP. Radiographic changes were reported at the baseline, 6-, and 12-months post-surgery. RESULTS All implants achieved the success criteria with no complications. At 6- and 12-months post-surgery, group III showed a statistically lower mean ridge width loss compared to Group I and Group II (P < .001). Group II revealed less reduction in the mean alveolar ridge width compared to group I (P < .001). Group III showed a statistically significantly less MBL loss than group I and group II (P < .001). All groups showed a statistically significant increase in BD gain compared to baseline (P < .001). Group III showed statistically significant high BD compared to group II (P < .001). Group II showed statistically significantly higher mean BD gain than that of group I (P < .001). CONCLUSION SMV combined with ATBG boosts the hard tissue parameters around dental implants over ATBG alone. Clinical trial registration was on August 1, 2021 (NCT04992416). CLINICAL RELEVANCE ATBG with SMV in periodontally compromised sites could improve implant osseointegration and promote favorable changes in peri-implant tissues.
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Affiliation(s)
- Dalia Rasheed Issa
- Department of Oral Medicine and Periodontology, Faculty of Oral and Dental Medicine, Kafrelsheikh University, Kafr El-sheikh, Egypt.
| | - Mohamed Nassar
- Department of Oral Medicine, Oral Diagnosis, and Radiology, Faculty of Dentistry, Tanta University, Tanta, Egypt
| | - Walid Elamrousy
- Department of Oral Medicine and Periodontology, Faculty of Oral and Dental Medicine, Kafrelsheikh University, Kafr El-sheikh, Egypt
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Xu T, Gao S, Yang N, Zhao Q, Zhang Y, Li T, Liu Z, Han B. A personalized biomimetic dual-drug delivery system via controlled release of PTH 1-34 and simvastatin for in situ osteoporotic bone regeneration. Front Bioeng Biotechnol 2024; 12:1355019. [PMID: 38357710 PMCID: PMC10865375 DOI: 10.3389/fbioe.2024.1355019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 01/17/2024] [Indexed: 02/16/2024] Open
Abstract
Patients with osteoporosis often encounter clinical challenges of poor healing after bone transplantation due to their diminished bone formation capacity. The use of bone substitutes containing bioactive factors that increase the number and differentiation of osteoblasts is a strategy to improve poor bone healing. In this study, we developed an in situ dual-drug delivery system containing the bone growth factors PTH1-34 and simvastatin to increase the number and differentiation of osteoblasts for osteoporotic bone regeneration. Our system exhibited ideal physical properties similar to those of natural bone and allowed for customizations in shape through a 3D-printed scaffold and GelMA. The composite system regulated the sustained release of PTH1-34 and simvastatin, and exhibited good biocompatibility. Cell studies revealed that the composite system reduced osteoblast death, and promoted expression of osteoblast differentiation markers. Additionally, by radiographic analysis and histological observation, the dual-drug composite system demonstrated promising bone regeneration outcomes in an osteoporotic skull defect model. In summary, this composite delivery system, comprising dual-drug administration, holds considerable potential for bone repair and may serve as a safe and efficacious therapeutic approach for addressing bone defects in patients with osteoporosis.
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Affiliation(s)
- Tongtong Xu
- Department of Prosthodontics, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Jilin University, Changchun, Jilin, China
| | - Shang Gao
- Department of Stomatology, Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Nan Yang
- Department of Prosthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Qi Zhao
- Department of Prosthodontics, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Jilin University, Changchun, Jilin, China
| | - Yutong Zhang
- School of Pharmaceutical Sciences, Jilin University, Changchun, Jilin, China
| | - Tieshu Li
- School of Pharmaceutical Sciences, Jilin University, Changchun, Jilin, China
| | - Zhihui Liu
- Department of Prosthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Bing Han
- School of Pharmaceutical Sciences, Jilin University, Changchun, Jilin, China
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Issa DR, Elamrousy W, Gamal AY. Alveolar ridge splitting and simvastatin loaded xenograft for guided bone regeneration and simultaneous implant placement: randomized controlled clinical trial. Clin Oral Investig 2024; 28:71. [PMID: 38172458 DOI: 10.1007/s00784-023-05427-y] [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: 08/14/2023] [Accepted: 11/20/2023] [Indexed: 01/05/2024]
Abstract
OBJECTIVES The present study goal was to assess clinically and radiographically using simvastatin (SMV) loaded xenograft for guided bone regeneration (GBR) around simultaneously placed implants with alveolar ridge splitting in patients with horizontally atrophic jaw defect. MATERIALS AND METHODS Randomized distribution of the twenty-two patients into two groups (11 patients each) was performed. Group I participants received alveolar ride splitting (ARS) with GBR using SMV gel mixed bone graft and a barrier membrane with simultaneous implant placement. Group II received the same treatment protocol without SMV gel. At the baseline, 6- and 9-months post-surgery, clinical and radiological alterations were assessed. RESULTS Six months after therapy, PES records of group I were statistically significantly improved than those of group II (P < .001). Group I exhibited statistically significant expansion of the alveolar ridge over group II after 6 and 9 months (P < .001). When compared to group II over the evaluation interval between 6 and 9 months, group I demonstrated statistically substantially minimal loss of the mean marginal bone level (P < .001). At the 6- and 9-month observation periods, bone density gain was considerably higher in group I than that in group II (P < .001). CONCLUSION Alveolar ridge splitting along with GBR-augmented SMV improve the clinical and radiographical outcomes around dental implant over GBR alone. CLINICAL RELEVANCE Augmenting GBR with SMV in alveolar ridge splitting could boost implant osseointegration and enhance peri-implant tissue changes. CLINICAL TRIAL REGISTRATION NCT05020405.
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Affiliation(s)
- Dalia Rasheed Issa
- Department of Oral Medicine and Periodontology, Faculty of Oral and Dental Medicine, Kafrelsheikh University, Kafr El-Sheikh, Egypt.
- Department of Periodontics and Preventive Dentistry, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
| | - Walid Elamrousy
- Department of Oral Medicine and Periodontology, Faculty of Oral and Dental Medicine, Kafrelsheikh University, Kafr El-Sheikh, Egypt
| | - Ahmed Y Gamal
- Department of Periodontology, Faculty of Oral and Dental Medicine, Ain Shams University-Misr University for Science and Technology, Cairo, Egypt
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Du Y, Zhong H, Yu C, Lv Y, Yao Y, Peng Z, Lu S. Mir-142-5p inhibits the osteogenic differentiation of bone marrow mesenchymal stem cells by targeting Lhx8. Heliyon 2023; 9:e19878. [PMID: 37809754 PMCID: PMC10559276 DOI: 10.1016/j.heliyon.2023.e19878] [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: 05/21/2023] [Revised: 08/31/2023] [Accepted: 09/04/2023] [Indexed: 10/10/2023] Open
Abstract
Osteoporosis (OP), a common systemic bone metabolism disease with a high incidence rate, is a serious health risk factor. Osteogenic differentiation balance is regulated by bone marrow mesenchymal stem cells (BMSCs) and plays a key role in OP occurrence and progression. Although, LIM homeobox 8 (Lhx8) has been identified to affect BMSCs osteogenic differentiation, its roles in OP and the associated mechanism remains unclear. Here, we aimed to elucidate the role and mechanism of Lhx8 in the osteogenic differentiation of BMSCs. BMSCs isolated from wild type and OP Sprague-Dawley rats were cultured and confirmed via flow cytometry and microscopy. Based on dual-luciferase reporter assay, BMSCs were transfected with miR-142-5p mimics and miR-NC (negative control). Real-time quantitative reverse transcription polymerase chain reaction and Western blot analyses were performed to determine the role of Lhx8 in BMSCs osteogenic differentiation. Lhx8 expression was significantly reduced in OP, whereas that of miR-142-5p, a possible Lhx8 regulator, was significantly upregulated. Dual-luciferase reporter assay demonstrated that miR-142-5p exerted a direct targeted regulatory effect on Lhx8. Moreover, miR-142-5p mimics significantly inhibited BMSCs osteogenic differentiation as well as Lhx8 expression in vitro, indicating that miR-142-5p may be involved in BMSCs osteogenic differentiation via Lhx8 expression regulation and may serve as a potential diagnostic target for OP. Overall, these findings indicated that miR-142-5p inhibits BMSCs osteogenic differentiation by suppressing Lhx8. These may serve as a foundation for further studies on OP treatment based on miR-142-5p targeting.
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Affiliation(s)
- Yongjun Du
- Orthopaedics Department, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, The Key Laboratory of Digital Orthopaedics of Yunnan Provincial, Yunnan Provincial Center for Clinical Medicine in Spinal and Spinal Cord Disorders, Kunming, 650034, China
- Medical School, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
| | - Hui Zhong
- Orthopaedics Department, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, The Key Laboratory of Digital Orthopaedics of Yunnan Provincial, Yunnan Provincial Center for Clinical Medicine in Spinal and Spinal Cord Disorders, Kunming, 650034, China
| | - Chen Yu
- Orthopaedics Department, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, The Key Laboratory of Digital Orthopaedics of Yunnan Provincial, Yunnan Provincial Center for Clinical Medicine in Spinal and Spinal Cord Disorders, Kunming, 650034, China
| | - Yan Lv
- Orthopaedics Department, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, The Key Laboratory of Digital Orthopaedics of Yunnan Provincial, Yunnan Provincial Center for Clinical Medicine in Spinal and Spinal Cord Disorders, Kunming, 650034, China
- Faculty of Life science and Technology, Kunming University of Science and Technology, Kunming, 650500, China
| | - Yueyi Yao
- Science and Technology Achievement Incubation Center, Kunming Medical University, 1168 Chunrongxi Road, Kunming, Yunnan 650500, China
| | - Zhi Peng
- Orthopaedics Department, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, The Key Laboratory of Digital Orthopaedics of Yunnan Provincial, Yunnan Provincial Center for Clinical Medicine in Spinal and Spinal Cord Disorders, Kunming, 650034, China
| | - Sheng Lu
- Orthopaedics Department, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, The Key Laboratory of Digital Orthopaedics of Yunnan Provincial, Yunnan Provincial Center for Clinical Medicine in Spinal and Spinal Cord Disorders, Kunming, 650034, China
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Pruthi G, Mahajan R, Gupta A, Patil AN, Paramasivam V, Kaundal S. The Effects of Statins on Bone Formation Around Implants Placed in Animal Bones: A Systematic Review and Meta-Analysis. J Maxillofac Oral Surg 2023; 22:265-286. [PMID: 37122799 PMCID: PMC10130266 DOI: 10.1007/s12663-023-01873-z] [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: 12/15/2022] [Accepted: 02/11/2023] [Indexed: 03/02/2023] Open
Abstract
Background Implants are preferred for replacement of missing teeth by the clinicians as well as the patients. Lesser alveolar bone density doesn't preclude any individual for choosing this option but warrants for extra caution. Preclinical studies have explored the osteoinductive potential of statins, but results should be analyzed vigorously before implementing them in humans. There is no meta-analysis to document effect of statins on bone formation around implants in osteoporotic animals. Methods and material PubMed, Embase and Cochrane were searched for studies investigating the effect of statins on bone implant contact (BIC %), bone mineral density (BMD %) and bone volume (BV %) around implants at 2, 4 and 12 weeks. Meta-analysis was performed on subgroups with osteoporotic animals which were administered statins through different routes. Results Quantitative data from 12 studies showed favorable effect of statins on bone around implants. Positive difference was observed at 4 weeks in BIC (parenteral [SMD = 4.33 (2.89, 5.77); I 2 = 3%)], BMD (local [SMD = 1.33 (0.51, 2.15); I 2 = 0%] and BV (local [SMD = 1.58 (0.76, 2.40); I 2 = 0%]. BIC [SMD = 1.40 (0.89, 1.90); I 2 = 0%] and BV [SMD = 3.91 (2.33, 5.50); I 2 = 43%] were higher in experimental group after 12 weeks of oral administration. Conclusions Statins can be investigated as potential bone graft materials to increase the predictability of osseointegration especially in osteoporotic individuals. Future research should focus to reproduce homogeneous data and conclusive recommendations which can be applied in clinical trials. Supplementary Information The online version contains supplementary material available at 10.1007/s12663-023-01873-z.
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Affiliation(s)
- Gunjan Pruthi
- Prosthodontics, Oral Health Sciences Centre, PGIMER, Chandigarh, 160012 India
| | - Rhea Mahajan
- Prosthodontics, Oral Health Sciences Centre, PGIMER, Chandigarh, 160012 India
| | - Arpit Gupta
- Public Health Dentistry, Oral Health Sciences Centre, PGIMER, Chandigarh, India
| | | | - Vijayabharathi Paramasivam
- Prosthodontics, Oral Health Sciences Centre, PGIMER, Chandigarh, 160012 India
- Present Address: Prosthodontics, AIIMS, Raipur, India
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Autophagy mediates osteoporotic bone regeneration induced by micro-/nano-structured modification on hydroxyapatite bioceramics. ENGINEERED REGENERATION 2023. [DOI: 10.1016/j.engreg.2023.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023] Open
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Ripszky Totan A, Imre MM, Parvu S, Meghea D, Radulescu R, Enasescu DSA, Moisa MR, Pituru SM. Autophagy Plays Multiple Roles in the Soft-Tissue Healing and Osseointegration in Dental Implant Surgery-A Narrative Review. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6041. [PMID: 36079421 PMCID: PMC9457242 DOI: 10.3390/ma15176041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/21/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
Dental endo-osseous implants have become a widely used treatment for replacing missing teeth. Dental implants are placed into a surgically created osteotomy in alveolar bone, the healing of the soft tissue lesion and the osseointegration of the implant being key elements to long-term success. Autophagy is considered the major intracellular degradation system, playing important roles in various cellular processes involved in dental implant integration. The aim of this review is an exploration of autophagy roles in the main cell types involved in the healing and remodeling of soft tissue lesions and implant osseointegration, post-implant surgery. We have focused on the autophagy pathway in macrophages, endothelial cells; osteoclasts, osteoblasts; fibroblasts, myofibroblasts and keratinocytes. In macrophages, autophagy modulates innate and adaptive immune responses playing a key role in osteo-immunity. Autophagy induction in endothelial cells promotes apoptosis resistance, cell survival, and protection against oxidative stress damage. The autophagic machinery is also involved in transporting stromal vesicles containing mineralization-related factors to the extracellular matrix and regulating osteoblasts' functions. Alveolar bone remodeling is achieved by immune cells differentiation into osteoclasts; autophagy plays an important and active role in this process. Autophagy downregulation in fibroblasts induces apoptosis, leading to better wound healing by improving excessive deposition of extracellular matrix and inhibiting fibrosis progression. Autophagy seems to be a dual actor on the scene of dental implant surgery, imposing further research in order to completely reveal its positive features which may be essential for clinical efficacy.
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Affiliation(s)
- Alexandra Ripszky Totan
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Marina Melescanu Imre
- Department of Complete Denture, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Simona Parvu
- Department of Complementary Sciences, Hygiene and Medical Ecology Discipline, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Daniela Meghea
- Department of Complete Denture, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Radu Radulescu
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Dan Sebastian Alexandru Enasescu
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Mihai Radu Moisa
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Silviu Mirel Pituru
- Department of Professional Organization and Medical Legislation-Malpractice, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
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12
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Chen J, Yao Y, Wang X, Wang Y, Li T, Du J. Chloroquine regulates the proliferation and apoptosis of palate development on mice embryo by activating P53 through blocking autophagy in vitro. In Vitro Cell Dev Biol Anim 2022; 58:558-570. [PMID: 35947289 DOI: 10.1007/s11626-022-00704-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 07/02/2022] [Indexed: 11/05/2022]
Abstract
Cleft lip and palate is one of the most frequent congenital developmental defects. Autophagy is a highly conserved process of cell self-degradation in eukaryotes, involving multiple biological processes in which chloroquine (CQ) is the most common inhibitor. However, whether CQ affects and how it affects palate development is unknown. Mouse embryonic palatal cells (MEPCs) were treated with CQ to observe cell viability, apoptosis, migration, osteogenic differentiation by cell proliferation assay, flow cytometric analysis, scratch assay, and alizarin red staining. PI staining was used to measure cell cycle distribution. Immunofluorescence (IF) assay and transmission electron microscopy were used to detect autophagosomes. The autophagy-related factors (LC3 and P62), apoptosis-related markers (P53, caspase-3 cleaved caspase-3, BAX, and BCL-2), and cell cycle-related proteins (P21, CDK2, CDK4, cyclin D1, and cyclin E) were all measured by western blot. CQ inhibited the proliferation of MEPCs by arresting the G0/G1 phase of the cell cycle in a concentration- and time-dependent manner with cell cycle-related proteins P21 upregulated and CDK2, CDK4, cyclin D1, and cyclin E downregulated. Then we detected CQ also induced cell apoptosis in a dose-dependent manner by decreasing the BCL-2/BAX ratio and increasing cleaved caspase-3. Next, it was investigated that migration and osteogenesis of MEPCs decreased with CQ treatment in a dose-dependent manner. Meanwhile, CQ blocked the autophagy pathway by upregulating LC3II and P62 expressions which activated the P53 pathway. CQ activates P53 which affects MEPC biological characteristics by changing the proliferation and apoptosis of MEPCs through inhibiting autophagy.
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Affiliation(s)
- Jing Chen
- Laboratory of Orofacial Development, Laboratory of Molecular Signaling and Stem Cells Therapy, Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, 100050, China
| | - Yaxia Yao
- Laboratory of Orofacial Development, Laboratory of Molecular Signaling and Stem Cells Therapy, Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, 100050, China
| | - Xiaotong Wang
- Laboratory of Orofacial Development, Laboratory of Molecular Signaling and Stem Cells Therapy, Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, 100050, China
| | - Yijia Wang
- Laboratory of Orofacial Development, Laboratory of Molecular Signaling and Stem Cells Therapy, Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, 100050, China
| | - Tianli Li
- Laboratory of Orofacial Development, Laboratory of Molecular Signaling and Stem Cells Therapy, Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, 100050, China
| | - Juan Du
- Laboratory of Orofacial Development, Laboratory of Molecular Signaling and Stem Cells Therapy, Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, 100050, China.
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Mohammadi A, Dehkordi NR, Mahmoudi S, Rafeie N, Sabri H, Valizadeh M, Poorsoleiman T, Jafari A, Mokhtari A, Khanjarani A, Salimi Y, Mokhtari M, Deravi N. Effects of Drugs and Chemotherapeutic Agents on Dental Implant Osseointegration: Narrative Review. Curr Rev Clin Exp Pharmacol 2022; 19:CRCEP-EPUB-124232. [PMID: 35674294 DOI: 10.2174/2772432817666220607114559] [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: 09/14/2022] [Revised: 01/27/2022] [Accepted: 03/03/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Dental implants have been one of the most popular treatments for rehabilitating individuals with single missing teeth or fully edentulous jaws since their introduction. As more implant patients are well-aged and take several medications due to various systemic conditions, clinicians should be mindful of possible drug implications on bone remodeling and osseointegration. OBJECTIVE The present study aims to study and review some desirable and some unwelcomed implications of medicine on osseointegration. METHODS A broad search for proper relevant studies were conducted in four databases, including Web of Science, Pubmed, Scopus, and Google Scholar. RESULTS Some commonly prescribed medicines such as nonsteroidal anti-inflammatory drugs (NSAIDs), glucocorticoids, proton pump inhibitors (PPIs), selective serotonin reuptake inhibitors (SSRIs), anticoagulants, metformin, and chemotherapeutic agents may jeopardize osseointegration. On the contrary, some therapeutic agents such as anabolic, anti-catabolic, or dual anabolic and anti-catabolic agents may enhance osseointegration and increase the treatment's success rate. CONCLUSION Systemic medications that enhance osseointegration include mineralization promoters and bone resorption inhibitors. On the other hand, medications often given to the elderly with systemic problems might interfere with osseointegration, leading to implant failure. However, to validate the provided research, more human studies with a higher level of evidence are required.
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Affiliation(s)
- Aida Mohammadi
- Dental Materials Research Center, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Nazanin Roqani Dehkordi
- Department of Periodontology, Faculty of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Sadaf Mahmoudi
- Department of Endodontics, School of Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | - Niyousha Rafeie
- Dental Research Center, Dentistry Research Institute, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamoun Sabri
- Research Center, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Valizadeh
- Student Research Committee, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Taniya Poorsoleiman
- Student Research Committee, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Aryan Jafari
- Dental Materials Research Center, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Alireza Mokhtari
- Student Research Committee, Dental Faculty, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Arshia Khanjarani
- Student Research Committee, Dental Faculty, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Yasaman Salimi
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Melika Mokhtari
- Student Research Committee, Dental Faculty, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Niloofar Deravi
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical sciences, Tehran, Iran
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14
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Chen P, Liu Y, Liu W, Wang Y, Liu Z, Rong M. Impact of High-Altitude Hypoxia on Bone Defect Repair: A Review of Molecular Mechanisms and Therapeutic Implications. Front Med (Lausanne) 2022; 9:842800. [PMID: 35620712 PMCID: PMC9127390 DOI: 10.3389/fmed.2022.842800] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 04/15/2022] [Indexed: 11/23/2022] Open
Abstract
Reaching areas at altitudes over 2,500–3,000 m above sea level has become increasingly common due to commerce, military deployment, tourism, and entertainment. The high-altitude environment exerts systemic effects on humans that represent a series of compensatory reactions and affects the activity of bone cells. Cellular structures closely related to oxygen-sensing produce corresponding functional changes, resulting in decreased tissue vascularization, declined repair ability of bone defects, and longer healing time. This review focuses on the impact of high-altitude hypoxia on bone defect repair and discusses the possible mechanisms related to ion channels, reactive oxygen species production, mitochondrial function, autophagy, and epigenetics. Based on the key pathogenic mechanisms, potential therapeutic strategies have also been suggested. This review contributes novel insights into the mechanisms of abnormal bone defect repair in hypoxic environments, along with therapeutic applications. We aim to provide a foundation for future targeted, personalized, and precise bone regeneration therapies according to the adaptation of patients to high altitudes.
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Affiliation(s)
- Pei Chen
- Department of Periodontology and Implantology, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Yushan Liu
- Department of Periodontology and Implantology, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Wenjing Liu
- Department of Prosthodontics, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Yarong Wang
- Department of Periodontology and Implantology, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Ziyi Liu
- Department of Periodontology and Implantology, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Mingdeng Rong
- Department of Periodontology and Implantology, Stomatological Hospital, Southern Medical University, Guangzhou, China
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15
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Wang F, Deng H, Chen J, Wang Z, Yin R. LncRNA MIAT can regulate the proliferation, apoptosis, and osteogenic differentiation of bone marrow-derived mesenchymal stem cells by targeting miR-150-5p. Bioengineered 2022; 13:6343-6352. [PMID: 35282774 PMCID: PMC9208443 DOI: 10.1080/21655979.2021.2011632] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Osteoporosis (OP) is a systemic bone metabolic disease with complicated pathogenesis and is difficult to cure clinically. The regulatory mechanisms of OP are needed to be further investigated. In the present study, we focused on the role of myocardial infarction-associated transcript (MIAT) in OP development and examined the underlying mechanism. The serum expression levels of MIAT in samples from patients with OP and healthy controls were compared using quantitative reverse transcription-PCR (qRT-PCR). The dual-luciferase reporter assay was used to confirm the relationship between MIAT and its potential target microRNA, i.e., miR-150-5p. Moreover, bone marrow-derived mesenchymal stem cells (BMSCs) were cultured and transfected with MIAT shRNA, with or without miR-150-5p inhibitor. EdU staining and colony formation analysis were performed to determine the proliferation ability of these cells. Furthermore, the TUNEL assay and flow cytometry were used to assess BMSC apoptosis. Finally, RT-PCR and Western blot assays were employed to assess the expression of osteogenic differentiation biomarkers. Compared with controls, the expression of MIAT was significantly increased, whereas that of miR-150-5p was markedly decreased in patients with OP. MIAT and miR-150-5p expression levels exhibited a strong negative correlation. Furthermore, osteogenic differentiation indicators were suppressed in serum of OP patients. MIAT was downregulated, and miR-150-5p was upregulated in induced to osteogenic differentiation BMSCs. Furthermore, downregulation of MIAT dramatically promoted osteogenic differentiation, increased proliferation, and inhibited apoptosis in BMSCs; miR-150-5p inhibitor abrogated the effects of MIAT. In conclusion, lncRNA MIAT can regulate the proliferation, apoptosis, and osteogenic differentiation of BMSCs.
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Affiliation(s)
- Fei Wang
- Department of Orthopedics, China-Japan Union Hospital, Changchun, China
| | - Huimin Deng
- Jilin Medical Products Administration, Changchun, China
| | - Jimin Chen
- Department of Geriatrics, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zhaobin Wang
- Department of Orthopedics, Liaohe Hospital, Liaoyuan, China
| | - Ruofeng Yin
- Department of Orthopedics, China-Japan Union Hospital, Changchun, China
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16
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El Shafei SF, Raafat SN, Amin AH, Rizk FN. Effect of local application of platelet-rich fibrin scaffold loaded with simvastatin on peri-implant bone changes. J Indian Prosthodont Soc 2022; 22:152-160. [PMID: 36511026 PMCID: PMC9132502 DOI: 10.4103/jips.jips_258_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Aim The purpose of this study was to compare the effects of autologous platelet-rich fibrin (PRF) alone and PRF loaded with SIM on peri-implant bone changes and implant stability in patients undergoing implant rehabilitation. Settings and Design This was a nonrandomized controlled split-mouth study. Materials and Methods The study included 8 males between the ages of 45 and 60 years. Each patient received two implants, one on each side of the arch. One side was treated with PRF alone and the other side with PRF loaded with SIM at the time of osteotomy. A cone-beam computed tomography was used to evaluate bone changes around the insertion of implant sites at 3, 6, and 12 months postoperatively. The secondary outcome included measuring implant stability using Osstell device at baseline and 3 months postinsertion. To compare groups at different time periods, data were examined using a two-way analysis of variance. Statistical Analysis Used The results were compared between the groups using a two-way analysis of variance, followed by a post hoc Bonferroni test. To examine total bone changes and stability comparisons between the two groups at the end of the trial, an unpaired t-test was utilized. Results The mean crestal bone-level changes in the SIM/PRF group were significantly lower than the PRF group, with a mean shift of 0.9788 ± 0.04853 versus 1.356 ± 0.0434, respectively (P < 0.0001). There was no significant difference between the two groups in implant stability. Conclusion Peri-implant application of SIM/PRF resulted in less bone changes than PRF alone, which may prove to be beneficial for the long-term success of implants. SIM showed promising results in limiting peri-implant bone resorption providing new clinical application for SIM in dental implant rehabilitation.
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Affiliation(s)
- Sara Fikry El Shafei
- Department of Removable Prosthodontics, Faculty of Dentistry, British University in Egypt (BUE), Cairo, Egypt,Address for correspondence: Dr. Sara Fikry El Shafei, Department of Removable Prosthodontics, Faculty of Dentistry, British University in Egypt (BUE), Cairo, Egypt. 40 Baghdad St., Heliopolis, Cairo, Egypt. E-mail:
| | - Shereen N Raafat
- Department of Phaarmacology, Director of Stem Cells and Tissue Culture Hub, Centre of Innovative Dental Sciences (CIDS), Faculty of Dentistry, British University in Egypt (BUE), Cairo, Egypt
| | - Ayman H Amin
- Department of Removable Prosthodontics, Faculty of Dentistry, British University in Egypt (BUE), Cairo, Egypt
| | - Fardos N Rizk
- Department of Removable Prosthodontics, Faculty of Dentistry, British University in Egypt (BUE), Cairo, Egypt
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17
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Nourah D, Aldahlawi S, Andreana S. Should the Quality of Glycemic Control Guide Dental Implant Therapy in Patients with Diabetes? Focus on Implant Survival. Curr Diabetes Rev 2022; 18:e060821195367. [PMID: 34365929 DOI: 10.2174/1573399817666210806120300] [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: 05/04/2021] [Revised: 06/21/2021] [Accepted: 07/01/2021] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Optimal glycemic control is crucial to dental implant long-term functional and esthetic success. Despite HbA1c levels of 7% or lower used is as an indicator for good glycemic control, however, this level may not be attainable for all diabetic patients. Most dentists do not consider patients with poor glycemic control candidates for implant therapy due to higher implant failure, infection or other complications. AIM This review challenges the concept of one size fits all and aims to critically appraise the evidence for the success or failure rate of dental implants and peri-implant health outcomes in patients with less than optimal glycemic control. DISCUSSION Evidence suggests that estimating glycemic control from HbA1c measurement alone is misleading. Moreover, elevated preoperative HbA1c was not associated with increased mortality and morbidity after major surgical procedures. Literature for the survival or success of implants in diabetic patients is inconsistent due to a lack of standardized reporting of clinical data collection and outcomes. While a number of studies report that implant treatment in patients with well controlled diabetes has a similar success rate to healthy individuals, other studies suggest that the quality of glycemic control in diabetic patients does not make a difference in the implant failure rate or marginal bone loss. This discrepancy could indicate that risk factors other than hyperglycemia may contribute to the survival of implants in diabetic patients. CONCLUSION In the era of personalized medicine, the clinician should utilize individualized information and analyze all risk factors to provide the patient with evidence-based treatment options.
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Affiliation(s)
- Dalia Nourah
- Department of Basic and Clinical Oral Sciences, Faculty of Dentistry, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Salwa Aldahlawi
- Department of Basic and Clinical Oral Sciences, Faculty of Dentistry, Umm Al-Qura University, Makkah, Saudi Arabia
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18
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Qi H, Wang K, Li M, Zhang Y, Dong K, Heise S, Boccaccini AR, Lu T. Co-culture of BMSCs and HUVECs with simvastatin-loaded gelatin nanosphere/chitosan coating on Mg alloy for osteogenic differentiation and vasculogenesis. Int J Biol Macromol 2021; 193:2021-2028. [PMID: 34767883 DOI: 10.1016/j.ijbiomac.2021.11.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 09/29/2021] [Accepted: 11/03/2021] [Indexed: 11/27/2022]
Abstract
Mg alloys are increasingly being investigated as a versatile and economical alternative for developing bone repair implants because of their high mechanical strength, wide availability, adjustable structure and properties. In this study, magnesium alloy WE43 is coated on both sides with gelatin nanosphere/chitosan (GNs/CTS), a coating enhanced by incorporating simvastatin (SIM). SIM-loaded GNs/CTS coated magnesium alloy can promote the osteogenic differentiation of bone mesenchymal stem cells (BMSCs). BMSCs and human umbilical vein endothelial cells (HUVECs) are co-cultured through transwell systems. The release of SIM from the coating is found to increase the secretion of chemokine and angiogenic factors from BMSCs, which promote the migration and tube formation of HUVECs, respectively. Bone morphogenetic protein secreted by HUVECs is seen to increase by the release of SIM from the coating, promoting the osteogenic differentiation of BMSCs. The secretion of chemokines from HUVECs promote the migration of BMSCs. The coated magnesium alloy substrate loaded with SIM is found to regulate the osteogenic differentiation of BMSCs. The study of the paracrine interaction between BMSCs and HUVECs proves that the applied coating promotes both osteogenic differentiation and vascularization, thus demonstrating a new approach for the design of bone repair materials based on magnesium alloys.
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Affiliation(s)
- Hongfei Qi
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 West Youyi Road, 710072 Xi'an, China; Shaanxi Key Laboratory of Integrated Traditional and Western Medicine for Prevention and Treatment of Cardiovascular Diseases, Institute of Integrative Medicine, Shaanxi University of Chinese Medicine, Shiji Ave., 712046, Xi'an-Xianyang New Ecomic Zone, China
| | - Kun Wang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 West Youyi Road, 710072 Xi'an, China
| | - Meng Li
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 West Youyi Road, 710072 Xi'an, China; Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Cauerstraße 6, 91058 Erlangen, Germany
| | - Yanni Zhang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 West Youyi Road, 710072 Xi'an, China
| | - Kai Dong
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 West Youyi Road, 710072 Xi'an, China
| | - Svenja Heise
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Cauerstraße 6, 91058 Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Cauerstraße 6, 91058 Erlangen, Germany
| | - Tingli Lu
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 West Youyi Road, 710072 Xi'an, China.
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Yu X, Rong PZ, Song MS, Shi ZW, Feng G, Chen XJ, Shi L, Wang CH, Pang QJ. lncRNA SNHG1 induced by SP1 regulates bone remodeling and angiogenesis via sponging miR-181c-5p and modulating SFRP1/Wnt signaling pathway. Mol Med 2021; 27:141. [PMID: 34732133 PMCID: PMC8565074 DOI: 10.1186/s10020-021-00392-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 10/02/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND We aimed to investigate the functions and underlying mechanism of lncRNA SNHG1 in bone differentiation and angiogenesis in the development of osteoporosis. METHODS The differential gene or proteins expressions were measured by qPCR or western blot assays, respectively. The targeted relationships among molecular were confirmed through luciferase reporter, RIP and ChIP assays, respectively. Alkaline phosphatase (ALP), alizarin red S (ARS) and TRAP staining were performed to measure the osteoblast/osteoclast differentiation of BMSCs. The viability, migration and angiogenesis in BM-EPCs were validated by CCK-8, clone formation, transwell and tube formation assays, respectively. Western blot and immunofluorescence detected the cytosolic/nuclear localization of β-catenin. Ovariectomized (OVX) mice were established to confirm the findings in vitro. RESULTS SNHG1 was enhanced and miR-181c-5p was decreased in serum and femoral tissue from OVX mice. SNHG1 directly inhibited miR-181c-5p to activate Wnt3a/β-catenin signaling by upregulating SFRP1. In addition, knockdown of SNHG1 promoted the osteogenic differentiation of BMSCs by increasing miR-181c-5p. In contrast, SNHG1 overexpression advanced the osteoclast differentiation of BMSCs and inhibited the angiogenesis of BM-EPCs, whereas these effects were all reversed by miR-181c-5p overexpression. In vivo experiments indicated that SNHG1 silencing alleviated osteoporosis through stimulating osteoblastogenesis and inhibiting osteoclastogenesis by modulating miR-181c-5p. Importantly, SNHG1 could be induced by SP1 in BMSCs. CONCLUSIONS Collectively, SP1-induced SNHG1 modulated SFRP1/Wnt/β-catenin signaling pathway via sponging miR-181c-5p, thereby inhibiting osteoblast differentiation and angiogenesis while promoting osteoclast formation. Further, SNHG1 silence might provide a potential treatment for osteoporosis.
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Affiliation(s)
- Xiao Yu
- Department of Orthopedics, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, 315000, Zhejiang Province, China
- Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, No. 41 Xibei Street, Ningbo, 315000, Zhejiang Province, China
| | - Peng-Ze Rong
- Ningbo University School of Medicine, Ningbo, 315211, Zhejiang Province, China
| | - Meng-Sheng Song
- Ningbo University School of Medicine, Ningbo, 315211, Zhejiang Province, China
| | - Ze-Wen Shi
- Ningbo University School of Medicine, Ningbo, 315211, Zhejiang Province, China
| | - Gong Feng
- Ningbo University School of Medicine, Ningbo, 315211, Zhejiang Province, China
| | - Xian-Jun Chen
- Department of Orthopedics, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, 315000, Zhejiang Province, China
- Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, No. 41 Xibei Street, Ningbo, 315000, Zhejiang Province, China
| | - Lin Shi
- Department of Orthopedics, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, 315000, Zhejiang Province, China
- Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, No. 41 Xibei Street, Ningbo, 315000, Zhejiang Province, China
| | - Cheng-Hao Wang
- Department of Orthopedics, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, 315000, Zhejiang Province, China
- Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, No. 41 Xibei Street, Ningbo, 315000, Zhejiang Province, China
| | - Qing-Jiang Pang
- Department of Orthopedics, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, 315000, Zhejiang Province, China.
- Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, No. 41 Xibei Street, Ningbo, 315000, Zhejiang Province, China.
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20
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Wang L, Liang C, Lin X, Liu C, Li J. microRNA-491-5p regulates osteogenic differentiation of bone marrow stem cells in type 2 diabetes. Oral Dis 2021; 29:308-321. [PMID: 34618998 DOI: 10.1111/odi.14005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 08/04/2021] [Accepted: 08/10/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Osseointegration of oral implants has a low success rate in patients with type 2 diabetes. This is because of the inhibition of osteogenic differentiation in the jawbone marrow mesenchymal stem cells, in which the expression of microRNA(miR)-491-5p is significantly downregulated, as ascertained through gene chip screening. However, the underlying mechanisms are unclear. Here, we aimed to clarify the mechanisms involved in the influence of miR-491-5p on osteogenic differentiation. SUBJECTS AND METHODS Jawbone marrow mesenchymal stem cells were isolated from jawbones of patients with type 2 diabetes and subjected to bioinformatics and functional analyses. Osteogenesis experiments were conducted using the isolated cells and an in vivo model. RESULTS Knockdown and overexpression experiments revealed the positive effects of miR-491-5p expression on osteogenic differentiation in vivo and in vitro. Additionally, a dual-luciferase assay revealed that miR-491-5p targeted the SMAD/RUNX2 pathway by inhibiting the expression of epidermal growth factor receptor. CONCLUSIONS miR-491-5p is vital in osteogenic differentiation of jawbone mesenchymal stem cells; its downregulation in type 2 diabetes could be a major cause of decreased osteogenic differentiation. Regulation of miR-491-5p expression could improve osteogenic differentiation of jawbone mesenchymal stem cells in patients with type 2 diabetes.
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Affiliation(s)
- Lingxiao Wang
- Department of Dental Implant Centre, Beijing Stomatological Hospital, Capital Medical University, Capital Medical University School of Stomatology, Beijing, China
| | - Chao Liang
- Department of Dental Implant Centre, Beijing Stomatological Hospital, Capital Medical University, Capital Medical University School of Stomatology, Beijing, China
| | - Xiao Lin
- Department of Dental Implant Centre, Beijing Stomatological Hospital, Capital Medical University, Capital Medical University School of Stomatology, Beijing, China
| | - Changying Liu
- Department of Dental Implant Centre, Beijing Stomatological Hospital, Capital Medical University, Capital Medical University School of Stomatology, Beijing, China
| | - Jun Li
- Department of Dental Implant Centre, Beijing Stomatological Hospital, Capital Medical University, Capital Medical University School of Stomatology, Beijing, China.,Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
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21
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The role of autophagy in the process of osseointegration around titanium implants with micro-nano topography promoted by osteoimmunity. Sci Rep 2021; 11:18418. [PMID: 34531513 PMCID: PMC8446058 DOI: 10.1038/s41598-021-98007-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 09/01/2021] [Indexed: 02/08/2023] Open
Abstract
Osteoimmunity plays an important role in the process of implant osseointegration. Autophagy is a conservative metabolic pathway of eukaryotic cells, but whether the interaction between autophagy and osteoimmunity plays a key role in osseointegration remains unclear. In this study, we prepared smooth titanium disks and micro-nano topography titanium disks, to study the immune microenvironment of RAW264.7 cells, and prepared the conditioned medium to study the effect of immune microenvironment on the osteogenesis and autophagy of MC3T3-E1 cells. Autophagy inhibitor 3-MA was used to inhibit autophagy to observe the change of expression of osteogenic markers. The results showed that the micro-nano topography titanium disks could stimulate RAW264.7 cells to differentiate into M2 type, forming an anti-inflammatory immune microenvironment; compared with the control group, the anti-inflammatory immune microenvironment promoted the proliferation and differentiation of osteoblasts better. The anti-inflammatory immune environment activated the autophagy level of osteoblasts, while the expression of osteogenic markers was down-regulated after inhibition of autophagy. These results indicate that anti-inflammatory immune microenvironment can promote cell proliferation and osteogenic differentiation, autophagy plays an important role in this process. This study further explains the mechanism of implant osseointegration in osteoimmune microenvironment, and provides reference for improving implant osseointegration.
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Wang J, Xia Y, Li J, Wang W. miR-129-5p in exosomes inhibits diabetes-associated osteogenesis in the jaw via targeting FZD4. Biochem Biophys Res Commun 2021; 566:87-93. [PMID: 34119828 DOI: 10.1016/j.bbrc.2021.05.072] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 01/13/2023]
Abstract
Diabetes mellitus (DM) influence induces poor osseointegration. The osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) is a critical factor in successful dental implants. Certain microRNAs play important roles during bone development, and others are deregulated in diabetes. This study investigated the roles of miR-129-5p in the osteoblast differentiation regulation. Exosomes containing miR-129-5p inhibited the osteoblast differentiation and was found in the blood of DM rats. The BMSCs isolated from the jaw of rats were used to detect the miR-129-5p expression. Frizzled (FZD) proteins function as receptors for WNT ligands. The FZD4 was the target of miR-129-5p in dual luciferase assay and Western blot. The miR-129-5p inhibited osteoblast differentiation and decreased the osteoblast markers. The exosomes isolated from the blood of DM rats showed more miR-129-5p level. Results suggested that the exosomes containing miR-129-5p maybe regulators of BMSCs in jaw. The collected exosomes containing miR-129-5p showed the inhibition effect in osteoblast differentiation and decreased the expression osteoblastic markers by targeting FZD4/β-catenin signaling pathway. Therefore, the exosomes containing miR-129-5p in DM rats inhibits osteoblast differentiation by targeting FZD4/β-catenin pathway.
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Affiliation(s)
- Jinhui Wang
- Department of Clinical Laboratory, Xiamen Children's Hospital, Xiamen, China
| | - Yanyun Xia
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jianhao Li
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wei Wang
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China.
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23
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Huang L, Yin X, Chen J, Liu R, Xiao X, Hu Z, He Y, Zou S. Lithium chloride promotes osteogenesis and suppresses apoptosis during orthodontic tooth movement in osteoporotic model via regulating autophagy. Bioact Mater 2021; 6:3074-3084. [PMID: 33778189 PMCID: PMC7960682 DOI: 10.1016/j.bioactmat.2021.02.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 02/01/2021] [Accepted: 02/10/2021] [Indexed: 02/08/2023] Open
Abstract
Osteoporosis is a widely distributed disease that may cause complications such as accelerated tooth movement, bone resorption, and tooth loss during orthodontic treatment. Promoting bone formation and reducing bone resorption are strategies for controlling these complications. For several decades, the autophagy inducer lithium chloride (LiCl) has been explored for bipolar . In this study, we investigated the autophagy-promoting effect of LiCl on bone remodeling under osteoporotic conditions during tooth movement. Ovariectomy was used to induce osteoporosis status in vivo. The results showed that LiCl rejuvenated autophagy, decreased apoptosis, and promoted bone formation, thus protecting tooth movement in osteoporotic mice. Furthermore, in vitro experiments showed that LiCl reversed the effects of ovariectomy on bone marrow-derived mesenchymal stem cells (BMSCs) extracted from ovariectomized mice, promoting osteogenesis and suppressing apoptosis by positively regulating autophagy. These findings suggest that LiCl can significantly decrease adverse effects of osteoporosis on bone remodeling, and that it has great potential significance in the field of bone formation during tooth movement in osteoporosis patients.
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Affiliation(s)
- Li Huang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Xing Yin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Jun Chen
- The Medical & Nursing School, Chengdu University, Chengdu, 610106, China
| | - Ruojing Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Xiaoyue Xiao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Zhiai Hu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Yan He
- Laboratory for Regenerative Medicine, Tianyou Hospital, Wuhan University of Science and Technology, Wuhan, 430064, China.,Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital and Harvard School of Dental Medicine, Boston, MA, 02114, USA
| | - Shujuan Zou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
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24
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Effect of the Abnormal Expression of BMP-4 in the Blood of Diabetic Patients on the Osteogenic Differentiation Potential of Alveolar BMSCs and the Rescue Effect of Metformin: A Bioinformatics-Based Study. BIOMED RESEARCH INTERNATIONAL 2020; 2020:7626215. [PMID: 32596370 PMCID: PMC7298258 DOI: 10.1155/2020/7626215] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 04/28/2020] [Indexed: 02/08/2023]
Abstract
The success rate of oral implants is lower in type 2 diabetes mellitus (T2DM) patients than in nondiabetic subjects; functional impairment of bone marrow-derived mesenchymal stem cells (BMSCs) is an important underlying cause. Many factors in the blood can act on BMSCs to regulate their biological functions and influence implant osseointegration, but which factors play important negative roles in T2DM patients is still unclear. This study is aimed at screening differentially expressed genes in the blood from T2DM and nondiabetic patients, identifying which genes impact the osteogenic differentiation potential of alveolar BMSCs in T2DM patients, exploring drug intervention regimens, and providing a basis for improving implant osseointegration. Thus, a whole-blood gene expression microarray dataset (GSE26168) of T2DM patients and nondiabetic controls was analyzed. Based on Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) results, differentially expressed genes and signaling pathways related to BMSC osteogenic differentiation were screened, and major risk genes were extracted based on the mean decrease Gini coefficient calculated using the random forest method. Bone morphogenetic protein-4 (BMP-4), with significantly low expression in T2DM blood, was identified as the most significant factor affecting BMSC osteogenic differentiation potential. Subsequently, metformin, a first-line clinical drug for T2DM treatment, was found to improve the osteogenic differentiation potential of BMSCs from T2DM patients via the BMP-4/Smad/Runx2 signaling pathway. These results demonstrate that low BMP-4 expression in the blood of T2DM patients significantly hinders the osteogenic function of BMSCs and that metformin is effective in counteracting the negative impact of BMP-4 deficiency.
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25
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Zhang P, Zhang H, Lin J, Xiao T, Xu R, Fu Y, Zhang Y, Du Y, Cheng J, Jiang H. Insulin impedes osteogenesis of BMSCs by inhibiting autophagy and promoting premature senescence via the TGF-β1 pathway. Aging (Albany NY) 2020; 12:2084-2100. [PMID: 32017705 PMCID: PMC7041775 DOI: 10.18632/aging.102723] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 01/02/2020] [Indexed: 12/11/2022]
Abstract
The dysfunction of bone marrow stromal cells (BMSCs) may be a core factor in Type 2 diabetes mellitus (T2DM) associated osteoporosis. However, the underlying mechanism is not well understood. Here, we delineated the critical role of insulin impeding osteogenesis of BMSCs in T2DM. Compared with BMSCs from healthy people (H-BMSCs), BMSCs from T2DM patient (DM-BMSCs) showed decreased osteogenic differentiation and autophagy level, and increased senescent phenotype. H-BMSCs incubated in hyperglycemic and hyperinsulinemic conditions similarly showed these phenotypes of DM-BMSCs. Notably, enhanced TGF-β1 expression was detected not only in DM-BMSCs and high-glucose and insulin-treated H-BMSCs, but also in bone callus of streptozocin-induced diabetic rats. Moreover, inhibiting TGF-β1 signaling not only enhanced osteogenic differentiation and autophagy level of DM-BMSCs, but also delayed senescence of DM-BMSCs, as well as promoted mandible defect healing of diabetic rats. Finally, we further verified that it was TGF-β receptor II (TβRII), not TβRI, markedly increased in both DM-BMSCs and insulin-treated H-BMSCs. Our data revealed that insulin impeded osteogenesis of BMSCs by inhibiting autophagy and promoting premature senescence, which it should be responsible for T2DM-induced bone loss, at least in part. These findings suggest that inhibiting TGF-β1 pathway may be a potential therapeutic target for T2DM associated bone disorders.
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Affiliation(s)
- Ping Zhang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China.,Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Hengguo Zhang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Jialin Lin
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Tao Xiao
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Rongyao Xu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Yu Fu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China.,Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Yuchao Zhang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China.,Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Yifei Du
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China.,Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Jie Cheng
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China.,Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Hongbing Jiang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China.,Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
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26
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Age-dependent role of SIRT6 in jawbone via regulating senescence and autophagy of bone marrow stromal cells. J Mol Histol 2020; 51:67-76. [PMID: 32002721 DOI: 10.1007/s10735-020-09857-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 01/26/2020] [Indexed: 12/16/2022]
Abstract
Age-related jawbone loss directly impact the function of oral cavity resulted from tooth loss, implant failure, and jaw fracture. Numerous evidences show that age-related senescence of bone marrow stromal cells (BMSCs) play a critical role in bone loss, but little attention has been paid to jawbone. Here, we delineated the critical role of sirtuin family protein 6 (SIRT6) in senescence, autophagy, and osteogenesis of BMSCs from jawbones. Radiography analysis showed less jawbone quality in elderly than young people. We also showed that SIRT6 expression decreased in bone tissue and BMSCs from the elderly by immunochemical staining. BMSCs from the elderly exhibited decreased osteogenic differentiation and inclined senescence which these phenotypes could be simulated by SIRT6 knockdown. Furthermore, accompanied with the inhibition of SIRT6, the autophagy level and ostogenesis of BMSCs was also decreased. However, using rapamycin, an autophagy activator, could rescue these adverse effects of BMSCs caused by SIRT6 inhibition. Mechanistically, SIRT6 regulated the autophagy and osteogenesis of BMSCs by activating AKT-mTOR pathway, at least in part. Finally, a decreased jawbone quality was shown in SIRT6 haploinsufficiency mice by Wnt1 specific tissue knockdown (Wnt1-Cre;SIRT6fl/+) model. Taken together, our data revealed that SIRT6 adjusted senescence and osteogenesis of BMSCs via altering autophagy level, and associated with age-related bone loss. SIRT6 could be as a promising therapeutic target for age-related osteoporosis of jawbone.
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27
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Tang L, Lu W, Huang J, Tang X, Zhang H, Liu S. miR‑144 promotes the proliferation and differentiation of bone mesenchymal stem cells by downregulating the expression of SFRP1. Mol Med Rep 2019; 20:270-280. [PMID: 31115543 PMCID: PMC6580040 DOI: 10.3892/mmr.2019.10252] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 04/09/2019] [Indexed: 12/12/2022] Open
Abstract
Osteoporosis (OP) seriously affects the health and quality of life of elderly individuals and postmenopausal women, and the need to identify drugs that can prevent or treat OP remains urgent. Recently, several miRNAs have been reported to be involved in the differentiation of mesenchymal stem cells and osteoblasts; however, the role of miRNA (miR)-144 in regulating OP remains to be elucidated. In the present study, the expression levels of miR-144, secreted frizzled-related protein 1 (Sfrp1) and TNF-α in clinical samples were detected by the reverse transcription-quantitative polymerase chain reaction analysis and ELISA, respectively. 5-Ethynyl-2′-deoxyuridine staining, Hoechst 33258 staining, flow cytometry, a clone formation assay and Alizarin red staining were used to assess the effects of miR-144 combined with or without Sfrp1 small interfering RNA on the proliferation, apoptosis and osteoblastic differentiation of primary mesenchymal stem cells isolated from rats. Western blot assays were performed to assess the relevant mechanisms, and a dual luciferase reporter assay was used to detect the interaction between miR-144 and Sfrp1. The results showed that the levels of miR-144, Sfrp1 and TNF-α in clinical serum samples obtained from patients with postmenopausal OP were higher than those in serum samples obtained from postmenopausal women with normal bone density. There was a significant positive correlation between miR-144 and Sfrp1. Functional experiments demonstrated that miR-144 promoted proliferation, inhibited apoptosis and induced the osteoblastic differentiation of bone marrow-derived mesenchymal stem cells by targeting Sfrp1. It was also shown that miR-144 may help regulate OP by activating the Wnt/β-catenin pathway. These data suggest miR-144 as a novel target for preventing and treating OP.
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Affiliation(s)
- Ling Tang
- Department of Geriatrics, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541001, P.R. China
| | - Wenjun Lu
- Department of Geriatrics, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541001, P.R. China
| | - Jian Huang
- Department of Cell Biology and Genetics, Guilin Medical University, Guilin, Guangxi 541005, P.R. China
| | - Xu Tang
- Department of Occupational and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Huiyun Zhang
- Department of Endocrinology, Graduate School of Guilin Medical University, Guilin, Guangxi 541001, P.R. China
| | - Shujiao Liu
- Department of Geriatrics, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541001, P.R. China
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28
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Laha D, Deb M, Das H. KLF2 (kruppel-like factor 2 [lung]) regulates osteoclastogenesis by modulating autophagy. Autophagy 2019; 15:2063-2075. [PMID: 30894058 DOI: 10.1080/15548627.2019.1596491] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Macroautophagy/autophagy is involved in myeloid cellular repair, destruction, and osteoclast differentiation; conversely, KLF2 (kruppel-like factor 2 [lung]) regulates myeloid cell activation and differentiation. To investigate the specific role of KLF2 in autophagy, osteoclastic differentiation was induced in monocytes in presence or absence of the autophagy inhibitor 3-methyladenine (3-MA), KLF2 inducer geranylgeranyl transferase inhibitor (GGTI298), and adenoviral overexpression of KLF2. We found that the number of autophagic cells and multinucleated osteoclasts were significantly decreased in presence of 3-MA, GGTI298, and KLF2 overexpressed cells indicating involvement of KLF2 in these processes. In addition, autophagy-related protein molecules were significantly decreased after induction of KLF2 during the course of osteoclastic differentiation. Furthermore, induction of arthritis in mice reduced the level of Klf2 in monocytes, and enhanced autophagy during osteoclastic differentiation. Mechanistically, knocking down of KLF2 increased the level of Beclin1 (BECN1) expression, and conversely, KLF2 over-expression reduced the level of BECN1 in monocytes. Moreover, 3-MA and GGTI298 both reduced myeloid cell proliferation concomitantly upregulating senescence-related molecules (CDKN1A/p21 and CDKN1B/p27kip1). We further confirmed epigenetic regulation of Becn1 by modulating Klf2; knocking down of Klf2 increased the levels of histone activation marks H3K9 and H4K8 acetylation in the promoter region of Becn1; and overexpression of Klf2 decreased the levels of H4K8 and H3K9 acetylation. In addition, osteoclastic differentiation also increased levels of H3K9 and H4K8 acetylation in the promoter region of Becn1. Together these findings for the first time revealed that Klf2 critically regulates Becn1-mediated autophagy process during osteoclastogenesis.Abbreviations: ACP5/TRAP: acid phosphatase 5, tartrate resistant; Ad-KLF2: adenoviral construct of KLF2; ATG3: autophagy related 3; ATG5: autophagy related 5; ATG7: autophagy related 7; ATG12: autophagy related 12; BECN1: beclin 1, autophagy related; C57BL/6: inbred mouse strain C57 black 6; ChIP: chromatin immunoprecipitation; CSF1/MCSF: colony stimulating factor 1 (macrophage); CTSK: cathepsin K; EV: empty vector; GGTI298: geranylgeranyl transferase inhibitor; H3K9Ac: histone H3 lysine 9 acetylation; H4K8Ac: histone H4 lysine 8 acetylation; K/BxN mice: T cell receptor (TCR) transgene KRN and the MHC class II molecule A(g7) generates K/BxN mice; KLF2: kruppel-like factor 2 (lung); 3MA: 3-methyladenine; MAP1LC3B/LC3B: microtubule-associated protein 1 light chain 3 beta; MDC: monodansylcadaverine; NFATc1: nuclear factor of activated T cells 1; NFKB: nuclear factor of kappa light polypeptide gene enhancer in B cells; p21/CDKN1A: cyclin dependent kinase inhibitor 1A; p27kip1/CDKN1B: cyclin-dependent kinase inhibitor 1B; PCR: polymerase chain reaction; PtdIns3K: phosphoinositide 3-kinase; RA: rheumatoid arthritis; siKlf2: small interfering KLF2 ribonucleic acid; NS: non-specific; RAW 264.7: abelson murine leukemia virus transformed macrophage cell line; TNFSF11/RANKL: tumor necrosis factor (ligand) superfamily, member 11; TSS: transcriptional start site; UCSC: University of California, Santa Cruz.
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Affiliation(s)
- Dipranjan Laha
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA
| | - Moonmoon Deb
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA
| | - Hiranmoy Das
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA
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Exosome-integrated titanium oxide nanotubes for targeted bone regeneration. Acta Biomater 2019; 86:480-492. [PMID: 30630122 DOI: 10.1016/j.actbio.2019.01.006] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 01/02/2019] [Accepted: 01/06/2019] [Indexed: 12/13/2022]
Abstract
Exosomes are extracellular nanovesicles that play an important role in cellular communication. The modulatory effects of bone morphogenetic protein 2 (BMP2) on macrophages have encouraged the functionalization of scaffolds through the integration of the exosomes from the BMP2-stimulated macrophages to avoid ectopic bone formation and reduce adverse effects. To determine the functionality of exosomal nanocarriers from macrophages after BMP2 stimulation, we isolated the exosomes from Dulbecco's modified Eagle's medium (DMEM)- or BMP2-stimulated macrophages and evaluated their effects on osteogenesis. Morphological characterization of the exosomes derived from DMEM- or BMP2-treated macrophages revealed no significant differences, and the bone marrow-derived mesenchymal stromal cells showed similar cellular uptake patterns for both exosomes. In vitro study using BMP2/macrophage-derived exosomes indicated their beneficial effects on osteogenic differentiation. To improve the bio-functionality for titanium implants, BMP2/macrophage-derived exosomes were used to modify titanium nanotube implants to favor osteogenesis. The incorporation of BMP2/macrophage-derived exosomes dramatically increased the expression of early osteoblastic differentiation markers, alkaline phosphatase (ALP) and BMP2, indicative of the pro-osteogenic role of the titanium nanotubes incorporated with BMP2/macrophage-derived exosomes. The titanium nanotubes functionalized with BMP2/macrophage-derived exosomes activated autophagy during osteogenic differentiation. In conclusion, the exosome-integrated titanium nanotube may serve as an emerging functional material for bone regeneration. STATEMENT OF SIGNIFICANCE: The clinical application of bone morphogenetic protein 2 (BMP2) is often limited by its side effects. Exosomes are naturally secreted nanosized vesicles derived from cells and play an important role in intercellular communication. The contributions of this study include (1) the demonstration of the potential regulatory role of BMP2/macrophage-derived exosomes on the osteogenic differentiation of mesenchymal stromal cells (MSCs); (2) fabrication of titanium nanotubes incorporated with exosomes; (3) new insights into the application of titanium nanotube-based materials for the safe use of BMP2.
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30
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Shah FA, Thomsen P, Palmquist A. Osseointegration and current interpretations of the bone-implant interface. Acta Biomater 2019; 84:1-15. [PMID: 30445157 DOI: 10.1016/j.actbio.2018.11.018] [Citation(s) in RCA: 156] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 10/28/2018] [Accepted: 11/12/2018] [Indexed: 02/07/2023]
Abstract
Complex physical and chemical interactions take place in the interface between the implant surface and bone. Various descriptions of the ultrastructural arrangement to various implant design features, ranging from solid and macroporous geometries to surface modifications on the micron-, submicron-, and nano- levels, have been put forward. Here, the current knowledge regarding structural organisation of the bone-implant interface is reviewed with a focus on solid devices, mainly metal (or alloy) intended for permanent anchorage in bone. Certain biomaterials that undergo surface and bulk degradation are also considered. The bone-implant interface is a heterogeneous zone consisting of mineralised, partially mineralised, and unmineralised areas. Within the meso-micro-nano-continuum, mineralised collagen fibrils form the structural basis of the bone-implant interface, in addition to accumulation of non-collagenous macromolecules such as osteopontin, bone sialoprotein, and osteocalcin. In the published literature, as many as eight distinct arrangements of the bone-implant interface ultrastructure have been described. The interpretation is influenced by the in vivo model and species-specific characteristics, healing time point(s), physico-chemical properties of the implant surface, implant geometry, sample preparation route(s) and associated artefacts, analytical technique(s) and their limitations, and non-compromised vs compromised local tissue conditions. The understanding of the ultrastructure of the interface under experimental conditions is rapidly evolving due to the introduction of novel techniques for sample preparation and analysis. Nevertheless, the current understanding of the interface zone in humans in relation to clinical implant performance is still hampered by the shortcomings of clinical methods for resolving the finer details of the bone-implant interface. STATEMENT OF SIGNIFICANCE: Being a hierarchical material by design, the overall strength of bone is governed by composition and structure. Understanding the structure of the bone-implant interface is essential in the development of novel bone repair materials and strategies, and their long-term success. Here, the current knowledge regarding the eventual structural organisation of the bone-implant interface is reviewed, with a focus on solid devices intended for permanent anchorage in bone, and certain biomaterials that undergo surface and bulk degradation. The bone-implant interface is a heterogeneous zone consisting of mineralised, partially mineralised, and unmineralised areas. Within the meso-micro-nano-continuum, mineralised collagen fibrils form the structural basis of the bone-implant interface, in addition to accumulation of non-collagenous macromolecules such as osteopontin, bone sialoprotein, and osteocalcin.
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31
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Cao B, Dai X, Wang W. Knockdown of TRPV4 suppresses osteoclast differentiation and osteoporosis by inhibiting autophagy through Ca 2+ -calcineurin-NFATc1 pathway. J Cell Physiol 2018; 234:6831-6841. [PMID: 30387123 DOI: 10.1002/jcp.27432] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 08/27/2018] [Indexed: 12/22/2022]
Abstract
The aim of this study is to evaluate the effect of transient receptor potential vanilloid 4 (TRPV4) on osteoclast differentiation and osteoporosis, and to investigate the underlying mechanism. The results showed that TRPV4 expression and intracellular Ca2+ concentration were significantly upregulated in macrophage colony-stimulating factor (M-CSF)-stimulated and receptor activator of nuclear factor κΒ ligand (RANKL)-stimulated RAW264.7 cells. Furthermore, TRPV4 overexpression further increased the M-CSF- and RANKL-induced number of tartrate-resistant acid phosphatase (TRAP)-positive osteoclasts and expression of osteoclastogenesis-related genes (TRAP, c-Fos, and nuclear factor of activated T cells [NFATc1]), activated the Ca 2+ -calcineurin-NFATc1 signaling and increased autophagy-related proteins (light chain [LC] 3II and Beclin-1) during osteoclast differentiation. In contrast, TRPV4 knockdown exerted the opposite effects. Mechanically, inhibition of Ca 2+ -calcineurin-NFATc1 signaling by FK506 or 11R-VIVIT abrogated the TRPV4 overexpression-induced osteoclast differentiation and autophagy induction. Moreover, suppression of autophagy by 3-methyladenine attenuated the TRPV4-induced osteoclast differentiation. In addition, short hairpin RNA TRPV4-lentivirus administration significantly diminished the increased levels of several osteoclastogenesis-related genes (RANKL, TRAP, and tumor necrosis factor-α), alleviated the disturbed microarchitecture of lumbar vertebrae, restored the decreased bone mineral density, ratio of bone volume to total tissue volume, trabecular thickness, and trabecular number, and diminished the increased trabecular separation, in ovariectomy (OVX)-induced osteoporosis mice. Consistent with the in vitro data, TRPV4 knockdown significantly decreased the induced number of TRAP-positive osteoclasts, the increased LC3 and NFATc1 expression in the lumbar vertebrae of OVX mice. In conclusion, TRPV4 knockdown suppresses osteoclast differentiation and osteoporosis by inhibiting autophagy through Ca 2+ -calcineurin-NFATc1 pathway.
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Affiliation(s)
- Boran Cao
- Department of Orthopedics, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xin Dai
- Department of Oncology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wenbo Wang
- Department of Orthopedics, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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32
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Yan S, Ren J, Jian Y, Wang W, Yun W, Yin J. Injectable Maltodextrin-Based Micelle/Hydrogel Composites for Simvastatin-Controlled Release. Biomacromolecules 2018; 19:4554-4564. [DOI: 10.1021/acs.biomac.8b01234] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Shifeng Yan
- Department of Polymer Materials, Shanghai University, 99 Shangda Road, Shanghai 200444, People’s Republic of China
| | - Jie Ren
- Department of Polymer Materials, Shanghai University, 99 Shangda Road, Shanghai 200444, People’s Republic of China
| | - Yuhang Jian
- Department of Polymer Materials, Shanghai University, 99 Shangda Road, Shanghai 200444, People’s Republic of China
| | - Weidong Wang
- Department of Polymer Materials, Shanghai University, 99 Shangda Road, Shanghai 200444, People’s Republic of China
| | - Wentao Yun
- Department of Polymer Materials, Shanghai University, 99 Shangda Road, Shanghai 200444, People’s Republic of China
| | - Jingbo Yin
- Department of Polymer Materials, Shanghai University, 99 Shangda Road, Shanghai 200444, People’s Republic of China
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