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Chen X, Du J, Zhan W, Shao B, Jiang H, Chen Z, Wang C. Polyene phosphatidylcholine promotes tibial fracture healing in rats by stimulating angiogenesis dominated by the VEGFA/VEGFR2 signaling pathway. Biochem Biophys Res Commun 2024; 719:150100. [PMID: 38763043 DOI: 10.1016/j.bbrc.2024.150100] [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: 03/09/2024] [Revised: 05/09/2024] [Accepted: 05/10/2024] [Indexed: 05/21/2024]
Abstract
One of the factors that predispose to fractures is liver damage. Interestingly, fractures are sometimes accompanied by abnormal liver function. Polyene phosphatidylcholine (PPC) is an important liver repair drug. We wondered if PPC had a role in promoting fracture healing. A rat model of tibial fracture was developed using the modified Einhorn model method. X-rays were used to detect the progression of fracture healing. Progress of ossification and angiogenesis at the fracture site were analyzed by Safranin O/fast green staining and CD31 immunohistochemistry. To investigate whether PPC has a direct angiogenesis effect, HUVECs were used. We performed MTT, wound healing, Transwell migration, and tube formation assays. Finally, RT-qPCR and Western blot analysis were used to study the underlying mechanism. The results showed that PPC significantly shortened the apparent recovery time of mobility in rats. PPC treatment significantly promoted the formation of cartilage callus, endochondral ossification, and angiogenesis at the fracture site. In vitro, PPC promoted the proliferative viability of HUVECs, their ability to heal wounds, and their ability to penetrate membranes in the Transwell apparatus and increased the tube formation of cells. The transcription of VEGFA, VEGFR2, PLCγ, RAS, ERK1/2 and MEK1/2 was significantly up regulated by PPC. Further, the protein level results demonstrated a significant increase in the expression of VEGFA, VEGFR2, MEK1/2, and ERK1/2 proteins. In conclusion, our findings suggest that PPC promotes angiogenesis by activating the VEGFA/VEGFR2 and downstream signaling pathway, thereby accelerating fracture healing.
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Affiliation(s)
- Xing Chen
- School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Jinge Du
- School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Wenxuan Zhan
- School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Binghao Shao
- School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Huaying Jiang
- School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Zhaolong Chen
- School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Chunmei Wang
- School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China.
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Lin H, Nie L, Lu G, Wu H, Xu T. Long non-coding RNA KCNQ10T1/miR-19a-3p/SMAD5 axis promotes osteogenic differentiation of mouse bone mesenchymal stem cells. J Orthop Surg Res 2023; 18:929. [PMID: 38057885 PMCID: PMC10698940 DOI: 10.1186/s13018-023-04425-w] [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: 08/22/2023] [Accepted: 11/29/2023] [Indexed: 12/08/2023] Open
Abstract
BACKGROUND Bone fracture is a common orthopedic disease that needs over 3 months to recover. Promoting the osteogenic differentiation of bone mesenchymal stem cells (BMSCs) is beneficial for fracture healing. Therefore, this research aimed to study the roles of long non-coding RNA (lncRNA) KCNQ10T1 in osteogenic differentiation of BMSCs. METHODS BMSCs were treated with osteogenic medium and assessed by CCK-8 and flow cytometry assays. Alkaline phosphatase (ALP) staining, alizarin red staining (ARS), as well as concentration of osteoblast markers were measured to evaluate osteogenic differentiation of BMSCs. Western blot was employed to detect proteins; while, qRT-PCR was for mRNA levels. Additionally, targeted relationships between KCNQ10T1 and miR-19a-3p, as well as miR-19a-3p and SMAD5 were verified by dual luciferase reporter gene assay along with RNA pull-down method. RESULTS Upregulation of KCNQ10T1 promoted the ALP staining and ARS intensity, increased the cell viability and decreased the apoptosis rate of BMSCs. Besides, KCNQ10T1 overexpression increased the ALP, OPG, OCN and OPN protein levels. KCNQ10T1 sponges miR-19a-3p, which targets Smad5. Upregulated miR-19a-3p reversed the overexpressed KCNQ10T1-induced effects, and depletion of SMAD5 reversed the miR-19a-3p inhibitor-induced effects on osteogenic medium-treated BMSCs. CONCLUSIONS Upregulation of KCNQ10T1 promoted osteogenic differentiation of BMSCs through miR-19a-3p/SMAD5 axis in bone fracture.
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Affiliation(s)
- He Lin
- Department of Plastic Surgery, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, No.71, Hexi Street, Jianye District, Nanjing, 210019, Jiangsu Province, China.
| | - Lanjun Nie
- Department of Plastic Surgery, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, No.71, Hexi Street, Jianye District, Nanjing, 210019, Jiangsu Province, China
| | - Guiqing Lu
- Dermatological Department, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Haixia Wu
- Department of Plastic Surgery, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, No.71, Hexi Street, Jianye District, Nanjing, 210019, Jiangsu Province, China
| | - Tao Xu
- Department of Neurosurgery, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
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Cheng S, Zhao C, Liu S, Chen B, Chen H, Luo X, Wei L, Du C, Xiao P, Lei Y, Yan Y, Huang W. Injectable Self-Setting Ternary Calcium-Based Bone Cement Promotes Bone Repair. ACS OMEGA 2023; 8:16809-16823. [PMID: 37214722 PMCID: PMC10193540 DOI: 10.1021/acsomega.3c00331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 04/20/2023] [Indexed: 05/24/2023]
Abstract
Bone defects, especially large ones, are clinically difficult to treat. The development of new bone repair materials exhibits broad application prospects in the clinical treatment of trauma. Bioceramics are considered to be one of the most promising biomaterials owing to their good biocompatibility and bone conductivity. In this study, a self-curing bone repair material having a controlled degradation rate was prepared by mixing calcium citrate, calcium hydrogen phosphate, and semi-hydrated calcium sulfate in varying proportions, and its properties were comprehensively evaluated. In vitro cell experiments and RNA sequencing showed that the composite cement activated PI3K/Akt and MAPK/Erk signaling pathways to promote osteogenesis by promoting the proliferation and osteoblastic differentiation of mesenchymal stem cells. In a rat model with femoral condyle defects, the composite bone cement showed excellent bone repair effect and promoted bone regeneration. The injectable properties of the composite cement further improved its practical applicability, and it can be applied in bone repair, especially in the repair of irregular bone defects, to achieve superior healing.
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Affiliation(s)
- Shengwen Cheng
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Chen Zhao
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Senrui Liu
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Bowen Chen
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Hong Chen
- College
of Physics, Sichuan University, Chengdu 610064, China
| | - Xuefeng Luo
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Li Wei
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Chengcheng Du
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Pengcheng Xiao
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yiting Lei
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yonggang Yan
- College
of Physics, Sichuan University, Chengdu 610064, China
| | - Wei Huang
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
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Wei X, Wang J, Deng YY, Shao BH, Zhang ZF, Wang HH, Wang CM. Tubiechong patching promotes tibia fracture healing in rats by regulating angiogenesis through the VEGF/ERK1/2 signaling pathway. JOURNAL OF ETHNOPHARMACOLOGY 2023; 301:115851. [PMID: 36273748 DOI: 10.1016/j.jep.2022.115851] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/02/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The external use of traditional Chinese medicine (TCM) to treat fractures has a long history of clinical application and theoretical basis, and is also one of the characteristic treatment methods of TCM with significant efficacy and many advantages. Among the commonly used external Chinese medicines, Tubiechong is noteworthy. AIM OF THE STUDY To elucidate whether local patching of Tubiechong can promote fracture healing and explore its mechanism of action. MATERIALS AND METHODS A rat tibia fracture model was constructed by the modified Einhorn modeling method. X-ray films were taken to evaluate the progress of fracture healing. Serum bone alkaline phosphatase (BALP), osteocalcin (BGP) and the C-terminal content of collagen type I (CTX-I) were analyzed by ELISA. CD31 immunohistochemistry was used to evaluate angiogenesis in the tibia segment. The effects of Tubiechong decoction (TD) on HUVEC proliferation, migration and invasion were detected by MTT assay, wound healing assay and Transwell migration assay, respectively. RNA-seq was performed to identify differentially expressed genes (DEGs). Enrichment of functions and signaling pathway analysis were performed based on the Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) database. Quantitative real time polymerase chain reaction (qRT-PCR) was used to study gene expression levels. Western blotting (WB) was used to detect the expression of relevant regulatory proteins. RESULTS The healing time of rat tibia fractures in the three TD dose groups was shortened. The serum levels of BALP, BGP and CTX- I in the TD-treated group were higher than those in the NC group. The X-ray results showed that on the 7th day after surgery, the fracture healing degree of the high-dose TD group was significantly better than that of the NC group, and the fracture healing degrees of each TD treatment group were significantly higher than those of the NC group on the 14th, 17th, and 21st days after the operation. The CD31 immunohistochemistry results showed that the number of blood vessels and the vascular area in the TD treatment group were higher than those in the NC group. In vitro, TD promoted the proliferation, wound healing and migration of HUVECs. GO analysis of transcriptome sequencing results showed that TD significantly altered the expression of genes related to cell growth, metabolism, and motility. According to KEGG annotations, VEGFA was upregulated. Eight DEGs were enriched in the VEGFA-VEGFR2 signaling pathway, of which six were upregulated. KEGG signaling pathway analysis showed that the most abundant DEGs were in mitogen-activated protein kinase (MAPK) signaling pathway. qRT-PCR showed that VEGFA gene expression in HUVECs was 7.8 times that of the control group after 1 mg/mL TD treatment for 24 h, and WB experiments showed that its protein expression was 3 times that of the control group. WB results showed that the phosphorylated ERK gene was highly expressed, while the expression levels of phosphorylated P38 and phosphorylated JNK protein remained unchanged. CONCLUSION Tubechong patching therapy promotes tibia fracture healing in rats by regulating angiogenesis through the VEGF/ERK1/2 signaling pathway.
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Affiliation(s)
- Xue Wei
- Department of Biopharmaceuticals, School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Jing Wang
- Department of Biopharmaceuticals, School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Yu-Ying Deng
- Department of Biopharmaceuticals, School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Bing-Hao Shao
- Department of Biopharmaceuticals, School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Ze-Feng Zhang
- Department of Biopharmaceuticals, School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Hui-Hui Wang
- Department of Biopharmaceuticals, School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Chun-Mei Wang
- Department of Biopharmaceuticals, School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
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Schulze F, Lang A, Schoon J, Wassilew GI, Reichert J. Scaffold Guided Bone Regeneration for the Treatment of Large Segmental Defects in Long Bones. Biomedicines 2023; 11:biomedicines11020325. [PMID: 36830862 PMCID: PMC9953456 DOI: 10.3390/biomedicines11020325] [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: 12/20/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 01/26/2023] Open
Abstract
Bone generally displays a high intrinsic capacity to regenerate. Nonetheless, large osseous defects sometimes fail to heal. The treatment of such large segmental defects still represents a considerable clinical challenge. The regeneration of large bone defects often proves difficult, since it relies on the formation of large amounts of bone within an environment impedimental to osteogenesis, characterized by soft tissue damage and hampered vascularization. Consequently, research efforts have concentrated on tissue engineering and regenerative medical strategies to resolve this multifaceted challenge. In this review, we summarize, critically evaluate, and discuss present approaches in light of their clinical relevance; we also present future advanced techniques for bone tissue engineering, outlining the steps to realize for their translation from bench to bedside. The discussion includes the physiology of bone healing, requirements and properties of natural and synthetic biomaterials for bone reconstruction, their use in conjunction with cellular components and suitable growth factors, and strategies to improve vascularization and the translation of these regenerative concepts to in vivo applications. We conclude that the ideal all-purpose material for scaffold-guided bone regeneration is currently not available. It seems that a variety of different solutions will be employed, according to the clinical treatment necessary.
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Affiliation(s)
- Frank Schulze
- Center for Orthopaedics, Trauma Surgery and Rehabilitation Medicine, University Medicine Greifswald, 17475 Greifswald, Germany
| | - Annemarie Lang
- Departments of Orthopaedic Surgery & Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Janosch Schoon
- Center for Orthopaedics, Trauma Surgery and Rehabilitation Medicine, University Medicine Greifswald, 17475 Greifswald, Germany
| | - Georgi I. Wassilew
- Center for Orthopaedics, Trauma Surgery and Rehabilitation Medicine, University Medicine Greifswald, 17475 Greifswald, Germany
| | - Johannes Reichert
- Center for Orthopaedics, Trauma Surgery and Rehabilitation Medicine, University Medicine Greifswald, 17475 Greifswald, Germany
- Correspondence: ; Tel.: +49-3834-86-22530
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Yu BF, Wang Z, Chen XX, Zeng Q, Dai CC, Wei J. Continuous dynamic identification of key genes and molecular signaling pathways of periosteum in guided bone self-generation in swine model. J Orthop Surg Res 2023; 18:53. [PMID: 36653843 PMCID: PMC9847205 DOI: 10.1186/s13018-023-03524-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/10/2023] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Guided bone self-generation with periosteum-preserved has successfully regenerated mandibular, temporomandibular and interphalangeal joint. The aim of this study was to investigate the dynamic changes of gene expression of periosteum which was involved in the guided bone self-generation. METHODS Rib defects of critical size were created in mature swine with periosteum-preserved. The periosteum was sutured into a sealed sheath that closed the bone defect. The periosteum of trauma and control sites were harvested at postoperative 9 time points, and total RNA was extracted. Microarray analysis was conducted to identify the differences in the transcriptome of different time points between two groups. RESULTS The differentially expressed genes (DEGs) between control and trauma group were different at postoperative different time points. The dynamic changes of the number of DEGs fluctuated a lot. There were 3 volatility peaks, and we chose 3 time points of DEG number peak (1 week, 5 weeks and 6 months) to study the functions of DEGs. Oxidoreductase activity, oxidation-reduction process and mitochondrion are the most enriched terms of Go analysis. The major signaling pathways of DEGs enrichment include oxidative phosphorylation, PI3K-Akt signaling pathway, osteoclast differentiation pathway and Wnt signaling. CONCLUSIONS The oxidoreductase reaction was activated during this bone regeneration process. The oxidative phosphorylation, PI3K-Akt signaling pathway, osteoclast differentiation pathway and Wnt signaling may play important roles in the guided bone self-generation with periosteum-preserved. This study can provide a reference for how to improve the application of this concept of bone regeneration.
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Affiliation(s)
- Bao-Fu Yu
- grid.412523.30000 0004 0386 9086Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No. 639 Zhi Zao Ju Road, Shanghai, 200011 China
| | - Zi Wang
- grid.412523.30000 0004 0386 9086Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No. 639 Zhi Zao Ju Road, Shanghai, 200011 China
| | - Xiao-Xue Chen
- grid.412523.30000 0004 0386 9086Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No. 639 Zhi Zao Ju Road, Shanghai, 200011 China
| | - Qi Zeng
- grid.415002.20000 0004 1757 8108Department of Plastic Surgery, Jiangxi Province People’s Hospital, Nanchang, China
| | - Chuan-Chang Dai
- grid.412523.30000 0004 0386 9086Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No. 639 Zhi Zao Ju Road, Shanghai, 200011 China
| | - Jiao Wei
- grid.412523.30000 0004 0386 9086Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No. 639 Zhi Zao Ju Road, Shanghai, 200011 China
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Saul D, Menger MM, Ehnert S, Nüssler AK, Histing T, Laschke MW. Bone Healing Gone Wrong: Pathological Fracture Healing and Non-Unions-Overview of Basic and Clinical Aspects and Systematic Review of Risk Factors. BIOENGINEERING (BASEL, SWITZERLAND) 2023; 10:bioengineering10010085. [PMID: 36671657 PMCID: PMC9855128 DOI: 10.3390/bioengineering10010085] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 12/31/2022] [Accepted: 01/05/2023] [Indexed: 01/11/2023]
Abstract
Bone healing is a multifarious process involving mesenchymal stem cells, osteoprogenitor cells, macrophages, osteoblasts and -clasts, and chondrocytes to restore the osseous tissue. Particularly in long bones including the tibia, clavicle, humerus and femur, this process fails in 2-10% of all fractures, with devastating effects for the patient and the healthcare system. Underlying reasons for this failure are manifold, from lack of biomechanical stability to impaired biological host conditions and wound-immanent intricacies. In this review, we describe the cellular components involved in impaired bone healing and how they interfere with the delicately orchestrated processes of bone repair and formation. We subsequently outline and weigh the risk factors for the development of non-unions that have been established in the literature. Therapeutic prospects are illustrated and put into clinical perspective, before the applicability of biomarkers is finally discussed.
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Affiliation(s)
- Dominik Saul
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tübingen, BG Trauma Center Tübingen, 72076 Tübingen, Germany
- Kogod Center on Aging and Division of Endocrinology, Mayo Clinic, Rochester, MN 55905, USA
- Institute for Clinical and Experimental Surgery, Saarland University, 66421 Homburg, Germany
- Correspondence:
| | - Maximilian M. Menger
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tübingen, BG Trauma Center Tübingen, 72076 Tübingen, Germany
- Institute for Clinical and Experimental Surgery, Saarland University, 66421 Homburg, Germany
| | - Sabrina Ehnert
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tübingen, BG Trauma Center Tübingen, 72076 Tübingen, Germany
| | - Andreas K. Nüssler
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tübingen, BG Trauma Center Tübingen, 72076 Tübingen, Germany
| | - Tina Histing
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tübingen, BG Trauma Center Tübingen, 72076 Tübingen, Germany
| | - Matthias W. Laschke
- Institute for Clinical and Experimental Surgery, Saarland University, 66421 Homburg, Germany
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8
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Lončar SR, Halcrow SE, Swales D. Osteoimmunology: The effect of autoimmunity on fracture healing and skeletal analysis. Forensic Sci Int Synerg 2023; 6:100326. [PMID: 37091290 PMCID: PMC10120377 DOI: 10.1016/j.fsisyn.2023.100326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/27/2023] [Accepted: 03/08/2023] [Indexed: 04/25/2023]
Abstract
Understanding factors that affect bone response to trauma is integral to forensic skeletal analysis. It is essential in forensic anthropology to identify if impaired fracture healing impacts assessment of post-traumatic time intervals and whether a correction factor is required. This paper presents a synthetic review of the intersection of the literature on the immune system, bone biology, and osteoimmunological research to present a novel model of interactions that may affect fracture healing under autoimmune conditions. Results suggest that autoimmunity likely impacts fracture healing, the pathogenesis however, is under researched, but likely multifactorial. With autoimmune diseases being relatively common, significant clinical history should be incorporated when assessing skeletal remains. Future research includes the true natural healing rate of bone; effect of autoimmunity on this rate; variation of healing with different autoimmune diseases; and if necessary, development of a correction factor on the natural healing rate to account for impairment in autoimmunity.
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Affiliation(s)
- Stephie R. Lončar
- Centre for Anatomy and Human Identification, School of Science and Engineering, University of Dundee, Scotland, United Kingdom
- Department of Anatomy, University of Otago, New Zealand
- Corresponding author. Centre for Anatomy and Human Identification School of Science and Engineering, MSI/WTB Complex, University of Dundee, Dow Street, Dundee, DD1 5EH, Scotland, United Kingdom.
| | - Siân E. Halcrow
- Department of Anatomy, University of Otago, New Zealand
- Corresponding author. Biological Anthropology Research Group, Department of Anatomy, 270 Great King Street, University of Otago, Dunedin, 9016, New Zealand.
| | - Diana Swales
- Centre for Anatomy and Human Identification, School of Science and Engineering, University of Dundee, Scotland, United Kingdom
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9
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Liu Y, Niu P, Zhou M, Xue H. The role of proteoglycan form of DMP1 in cranial repair. BMC Mol Cell Biol 2022; 23:43. [PMID: 36175851 PMCID: PMC9524138 DOI: 10.1186/s12860-022-00443-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 09/20/2022] [Indexed: 11/11/2022] Open
Abstract
Background The cranial region is a complex set of blood vessels, cartilage, nerves and soft tissues. The reconstruction of cranial defects caused by trauma, congenital defects and surgical procedures presents clinical challenges. Our previous data showed that deficiency of the proteoglycan (PG) form of dentin matrix protein 1 (DMP1-PG) could lead to abnormal cranial development. In addition, DMP1-PG was highly expressed in the cranial defect areas. The present study aimed to investigate the potential role of DMP1-PG in intramembranous ossification in cranial defect repair. Methods Mouse cranial defect models were established by using wild- type (WT) and DMP1-PG point mutation mice. Microcomputed tomography (micro-CT) and histological staining were performed to assess the extent of repair. Immunofluorescence assays and real-time quantitative polymerase chain reaction (RT‒qPCR) were applied to detect the differentially expressed osteogenic markers. RNA sequencing was performed to probe the molecular mechanism of DMP1-PG in regulating defect healing. Results A delayed healing process and an abnormal osteogenic capacity of primary osteoblasts were observed in DMP1-PG point mutation mice. Furthermore, impaired inflammatory signaling pathways were detected by using RNA transcription analysis of this model. Conclusions Our data indicate that DMP1-PG is an indispensable positive regulator during cranial defect healing. Supplementary Information The online version contains supplementary material available at 10.1186/s12860-022-00443-4.
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Sharifi M, Kheradmandi R, Salehi M, Alizadeh M, Ten Hagen TLM, Falahati M. Criteria, Challenges, and Opportunities for Acellularized Allogeneic/Xenogeneic Bone Grafts in Bone Repairing. ACS Biomater Sci Eng 2022; 8:3199-3219. [PMID: 35816626 DOI: 10.1021/acsbiomaterials.2c00194] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
As bone grafts become more commonly needed by patients and as donors become scarcer, acellularized bone grafts (ABGs) are becoming more popular for restorative purposes. While autogeneic grafts are reliable as a gold standard, allogeneic and xenogeneic ABGs have been shown to be of particular interest due to the limited availability of autogeneic resources and reduced patient well-being in long-term surgeries. Because of the complete similarity of their structures with native bone, excellent mechanical properties, high biocompatibility, and similarities of biological behaviors (osteoinductive and osteoconductive) with local bones, successful outcomes of allogeneic and xenogeneic ABGs in both in vitro and in vivo research have raised hopes of repairing patients' bone injuries in clinical applications. However, clinical trials have been delayed due to a lack of standardized protocols pertaining to acellularization, cell seeding, maintenance, and diversity of ABG evaluation criteria. This study sought to uncover these factors by exploring the bone structures, ossification properties of ABGs, sources, benefits, and challenges of acellularization approaches (physical, chemical, and enzymatic), cell loading, and type of cells used and effects of each of the above items on the regenerative technologies. To gain a perspective on the repair and commercialization of products before implementing new research activities, this study describes the differences between ABGs created by various techniques and methods applied to them. With a comprehensive understanding of ABG behavior, future research focused on treating bone defects could provide a better way to combine the treatment approaches needed to treat bone defects.
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Affiliation(s)
- Majid Sharifi
- Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, 3614773955 Shahroud, Iran.,Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, 3614773955 Shahroud, Iran
| | - Rasoul Kheradmandi
- Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, 3614773955 Shahroud, Iran.,Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, 3614773955 Shahroud, Iran
| | - Majid Salehi
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, 3614773955 Shahroud, Iran.,Tissue Engineering and Stem Cells Research Center, Shahroud University of Medical Sciences, 3614773955 Shahroud, Iran
| | - Morteza Alizadeh
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, 3614773955 Shahroud, Iran
| | - Timo L M Ten Hagen
- Laboratory Experimental Oncology, Department of Pathology, Erasmus MC, 3015GD Rotterdam, The Netherlands
| | - Mojtaba Falahati
- Laboratory Experimental Oncology, Department of Pathology, Erasmus MC, 3015GD Rotterdam, The Netherlands
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11
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Neural Peptide α-CGRP Coregulated Angiogenesis and Osteogenesis via Promoting the Cross-Talk between Mesenchymal Stem Cells and Endothelial Cells. BIOMED RESEARCH INTERNATIONAL 2022; 2022:1585840. [PMID: 35757476 PMCID: PMC9225861 DOI: 10.1155/2022/1585840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 05/08/2022] [Accepted: 05/23/2022] [Indexed: 11/26/2022]
Abstract
Background The coupled vascularization and bone remodeling are key steps during bone healing, during which the cross-talk between mesenchymal stem cells (MSCs) and endothelial cells plays vital roles. Evidence indicates the well-characterized neuropeptide Calcitonin Gene-Related Peptide-α (CGRP) is proven to play an important role during bone regeneration. However, the regulatory effects of αCGRP on angiogenesis and osteogenesis, as well as underlying cellular and molecular mechanisms, remain unclear. Aim The present study was performed to verify the availability of the CGRP for osteogenic capacity in MSCs and explore its potential underlying molecular mechanism. After that, the promoted angiogenic effect of CGRP as well as its underlying mechanisms was studied. Methods and Results The results showed that CGRP could significantly increase the cyclic adenosine monophosphate (cAMP) level and promote the osteogenesis ability of MSCs via cAMP/PKA signaling pathway. Direct exposure to CGRP increased nitric oxide synthase expression, the release of NO, tube formation, and wound healing of human umbilical vein endothelial cells (HUVEC). The CGRP-treated MSCs were observed with high expression levels of angiogenic factors, such as bFGF and VEGF-α; the conditioned medium derived from CGRP-treated MSCs was also able to promote tube formation and transmembrane migration of HUVECs. Conclusion These findings demonstrate the coregulated angiogenesis and osteogenesis effects of CGRP, especially for its regulation effects on the cross-talk between mesenchymal stem cells and endothelial cells.
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Oliveira CS, Leeuwenburgh S, Mano JF. New insights into the biomimetic design and biomedical applications of bioengineered bone microenvironments. APL Bioeng 2021; 5:041507. [PMID: 34765857 PMCID: PMC8568480 DOI: 10.1063/5.0065152] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/06/2021] [Indexed: 12/31/2022] Open
Abstract
The bone microenvironment is characterized by an intricate interplay between cellular and noncellular components, which controls bone remodeling and repair. Its highly hierarchical architecture and dynamic composition provide a unique microenvironment as source of inspiration for the design of a wide variety of bone tissue engineering strategies. To overcome current limitations associated with the gold standard for the treatment of bone fractures and defects, bioengineered bone microenvironments have the potential to orchestrate the process of bone regeneration in a self-regulated manner. However, successful approaches require a strategic combination of osteogenic, vasculogenic, and immunomodulatory factors through a synergic coordination between bone cells, bone-forming factors, and biomaterials. Herein, we provide an overview of (i) current three-dimensional strategies that mimic the bone microenvironment and (ii) potential applications of bioengineered microenvironments. These strategies range from simple to highly complex, aiming to recreate the architecture and spatial organization of cell-cell, cell-matrix, and cell-soluble factor interactions resembling the in vivo microenvironment. While several bone microenvironment-mimicking strategies with biophysical and biochemical cues have been proposed, approaches that exploit the ability of the cells to self-organize into microenvironments with a high regenerative capacity should become a top priority in the design of strategies toward bone regeneration. These miniaturized bone platforms may recapitulate key characteristics of the bone regenerative process and hold great promise to provide new treatment concepts for the next generation of bone implants.
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Affiliation(s)
- Cláudia S. Oliveira
- Department of Chemistry, CICECO–Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Sander Leeuwenburgh
- Department of Dentistry-Regenerative Biomaterials, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Philips van Leydenlaan 25, 6525 EX Nijmegen, The Netherlands
| | - João F. Mano
- Department of Chemistry, CICECO–Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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A Review of Recent Developments in the Molecular Mechanisms of Bone Healing. Int J Mol Sci 2021; 22:ijms22020767. [PMID: 33466612 PMCID: PMC7828700 DOI: 10.3390/ijms22020767] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/08/2021] [Accepted: 01/12/2021] [Indexed: 02/06/2023] Open
Abstract
Between 5 and 10 percent of fractures do not heal, a condition known as nonunion. In clinical practice, stable fracture fixation associated with autologous iliac crest bone graft placement is the gold standard for treatment. However, some recalcitrant nonunions do not resolve satisfactorily with this technique. For these cases, biological alternatives are sought based on the molecular mechanisms of bone healing, whose most recent findings are reviewed in this article. The pro-osteogenic efficacy of morin (a pale yellow crystalline flavonoid pigment found in old fustic and osage orange trees) has recently been reported, and the combined use of bone morphogenetic protein-9 (BMP9) and leptin might improve fracture healing. Inhibition with methyl-piperidino-pyrazole of estrogen receptor alpha signaling delays bone regeneration. Smoking causes a chondrogenic disorder, aberrant activity of the skeleton’s stem and progenitor cells, and an intense initial inflammatory response. Smoking cessation 4 weeks before surgery is therefore highly recommended. The delay in fracture consolidation in diabetic animals is related to BMP6 deficiency (35 kDa). The combination of bioceramics and expanded autologous human mesenchymal stem cells from bone marrow is a new and encouraging alternative for treating recalcitrant nonunions.
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