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Tan BB, Schwartz NE, Copes LE, Garland T. Effects of long-term voluntary wheel running and selective breeding for wheel running on femoral nutrient canals. J Anat 2024; 244:1015-1029. [PMID: 38303650 DOI: 10.1111/joa.14021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 01/15/2024] [Accepted: 01/19/2024] [Indexed: 02/03/2024] Open
Abstract
The nutrient artery provides ~50%-70% of the total blood volume to long bones in mammals. Studying the functional characteristics of this artery in vivo can be difficult and expensive, so most researchers have measured the nutrient foramen, an opening on the outer surface of the bone that served as the entry point for the nutrient artery during development and bone ossification. Others have measured the nutrient canal (i.e., the passage which the nutrient artery once occupied), given that the external dimensions of the foramen do not necessarily remain uniform from the periosteal surface to the medullary cavity. The nutrient canal, as an indicator of blood flow to long bones, has been proposed to provide a link to studying organismal activity (e.g., locomotor behavior) from skeletal morphology. However, although external loading from movement and activity causes skeletal remodeling, it is unclear whether it affects the size or configuration of nutrient canals. To investigate whether nutrient canals can exhibit phenotypic plasticity in response to physical activity, we studied a mouse model in which four replicate high runner (HR) lines have been selectively bred for high voluntary wheel-running behavior. The selection criterion is the average number of wheel revolutions on days 5 and 6 of a 6-day period of wheel access as young adults (~6-8 weeks old). An additional four lines are bred without selection to serve as controls (C). For this study, 100 female mice (half HR, half C) from generation 57 were split into an active group housed with wheels and a sedentary group housed without wheels for 12 weeks starting at ~24 days of age. Femurs were collected, soft tissues were removed, and femora were micro-computed tomography scanned at a resolution of 12 μm. We then imported these scans into AMIRA and created 3D models of femoral nutrient canals. We tested for evolved differences in various nutrient canal traits between HR and C mice, plastic changes resulting from chronic exercise, and the selection history-by-exercise interaction. We found few differences between the nutrient canals of HR versus C mice, or between the active and sedentary groups. We did find an interaction between selection history and voluntary exercise for the total number of nutrient canals per femur, in which wheel access increased the number of canals in C mice but decreased it in HR mice. Our results do not match those from an earlier study, conducted at generation 11, which was prior to the HR lines reaching selection limits for wheel running. The previous study found that mice from the HR lines had significantly larger total canal cross-sectional areas compared to those from C lines. However, this discrepancy is consistent with studies of other skeletal traits, which have found differences between HR and C mice to be somewhat inconsistent across generations, including the loss of some apparent adaptations with continued selective breeding after reaching a selection limit for wheel-running behavior.
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Affiliation(s)
- Brandon B Tan
- Department of Evolution, Ecology, and Organismal Biology, University of California, Riverside, Riverside, California, USA
| | - Nicole E Schwartz
- Department of Evolution, Ecology, and Organismal Biology, University of California, Riverside, Riverside, California, USA
| | - Lynn E Copes
- Department of Medical Sciences, Frank H. Netter MD School of Medicine, Quinnipiac University, Hamden, Connecticut, USA
| | - Theodore Garland
- Department of Evolution, Ecology, and Organismal Biology, University of California, Riverside, Riverside, California, USA
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2
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Rehmani S, McLaughlin CM, Eltaher HM, Moffett RC, Flatt PR, Dixon JE. Orally-delivered insulin-peptide nanocomplexes enhance transcytosis from cellular depots and improve diabetic blood glucose control. J Control Release 2023; 360:93-109. [PMID: 37315695 DOI: 10.1016/j.jconrel.2023.06.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 05/23/2023] [Accepted: 06/04/2023] [Indexed: 06/16/2023]
Abstract
Insulin regulates blood glucose levels, and is the mainstay for the treatment of type-1 diabetes and type-2 when other drugs provide inadequate control. Therefore, effective oral Insulin delivery would be a significant advance in drug delivery. Herein, we report the use of the modified cell penetrating peptide (CPP) platform, Glycosaminoglycan-(GAG)-binding-enhanced-transduction (GET), as an efficacious transepithelial delivery vector in vitro and to mediate oral Insulin activity in diabetic animals. Insulin can be conjugated with GET via electrostatic interaction to form nanocomplexes (Insulin GET-NCs). These NCs (size and charge; 140 nm, +27.10 mV) greatly enhanced Insulin transport in differentiated in vitro intestinal epithelium models (Caco2 assays; >22-fold increased translocation) with progressive and significant apical and basal release of up-taken Insulin. Delivery resulted in intracellular accumulation of NCs, enabling cells to act as depots for subsequent sustained release without affecting viability and barrier integrity. Importantly Insulin GET-NCs have enhanced proteolytic stability, and retained significant Insulin biological activity (exploiting Insulin-responsive reporter assays). Our study culminates in demonstrating oral delivery of Insulin GET-NCs which can control elevated blood-glucose levels in streptozotocin (STZ)-induced diabetic mice over several days with serial dosing. As GET promotes Insulin absorption, transcytosis and intracellular release, along with in vivo function, our simplistic complexation platform could allow effective bioavailability of other oral peptide therapeutics and help transform the treatment of diabetes.
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Affiliation(s)
- Sahrish Rehmani
- Regenerative Medicine & Cellular Therapies, The University of Nottingham Biodiscovery Institute (BDI), School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Christopher M McLaughlin
- Diabetes Research Centre, School of Biomedical Sciences, Ulster University, Coleraine, Co. Londonderry BT52 1SA, UK
| | - Hoda M Eltaher
- Regenerative Medicine & Cellular Therapies, The University of Nottingham Biodiscovery Institute (BDI), School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
| | - R Charlotte Moffett
- Diabetes Research Centre, School of Biomedical Sciences, Ulster University, Coleraine, Co. Londonderry BT52 1SA, UK
| | - Peter R Flatt
- Diabetes Research Centre, School of Biomedical Sciences, Ulster University, Coleraine, Co. Londonderry BT52 1SA, UK
| | - James E Dixon
- Regenerative Medicine & Cellular Therapies, The University of Nottingham Biodiscovery Institute (BDI), School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK.
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3
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Bao J, Sun X, Chen Z, Yang J, Wang C. Study on the angiogenesis ability of Polymethyl methacrylate-mineralized collagen/Mg-Ca composite material in vitro and the bone formation effect in vivo. J Biomater Appl 2022; 37:814-828. [PMID: 35969489 DOI: 10.1177/08853282221121851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Magnesium (Mg) and its alloys show high degrees of biocompatibility and biodegradability, used as biodegrad able materials in biomedical applications. In this study, Polymethyl methacrylate (PMMA) - mineralized collagen (nano-Hydroxyapatite/collagen; nHAC)/Mg-Ca composite materials were prepared, to study the angiogenesis ability of its composite materials on Human umbilical vein endothelial cells (HUVECs) and its osteogenesis effect in vivo. The results showed that the PMMA-nHAC reinforcement materials can promote the proliferation and adhesion in HUVECs of Mg matrix significantly, it can enhance the migration motility and VEGF expression of HUVECs. In vivo, Micro-CT examination showed that with coated samples presenting the highest bone formation. Histologically, the materials and their corrosion products caused no systematic or local cytotoxicological effects. Therefore, the Mg matrix composites prepared in the present study has good biocompatibility and PMMA-nHAC/Mg-Ca composite may be an ideal orthopedic material to improve the bone formation, and biodegradable magnesium based implants with bioactivity have potential applications in bone tissue.
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Affiliation(s)
- Jiaxin Bao
- Department of Prosthodontics, 207492The Second Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Xirao Sun
- Department of Prosthodontics, 207492The Second Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Zhan Chen
- Department of Prosthodontics, 207492The Second Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Jingxin Yang
- Beijing Key Laboratory of Information Service Engineering, 70541Beijing Union University, Beijing, China.,College of Robotics, 70541Beijing Union University, Beijing, China
| | - Chengyue Wang
- Department of Prosthodontics, 207492The Second Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
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Liu Z, Wei P, Cui Q, Mu Y, Zhao Y, Deng J, Zhi M, Wu Y, Jing W, Liu X, Zhao J, Zhao B. Guided bone regeneration with extracellular matrix scaffold of small intestinal submucosa membrane. J Biomater Appl 2022; 37:805-813. [PMID: 35924456 DOI: 10.1177/08853282221114450] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Guided bone regeneration (GBR) is a promising strategy for repairing bone defects using bioactive membranes. In this study, a new type of GBR membrane based on the small intestinal submucosa (SIS) was created, and its surface structure, cytological characteristics, and bone defect repair ability were compared with commonly used membranes. Our results show that compared to the Heal-all and Dentium membranes, the SIS membrane has an asymmetric structure that does not affect the proliferation of bone marrow mesenchymal stem cells (BMSCs). Instead, it increased their formation of calcium nodules and expression of bone morphogenetic protein-2 (BMP-2), alkaline phosphatase (ALP), runt-related transcription factor 2 (Runx2), and osteopontin (OPN). Six weeks after their insertion into a rat calvarial defect model, increased bone growth was observed in the SIS membrane group. Our results indicate that the SIS membrane has good biocompatibility and is more effective in promoting early bone formation than existing membranes. Given the wide range of source materials and simple preparation processes available, SIS membrane is a promising candidate for guided bone regeneration.
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Affiliation(s)
- Zihao Liu
- Tianjin Nankai Zhongnuo Stomatological Hospital, Tianjin, China
| | - Pengfei Wei
- Beijing Biosis Healing Biological Technology Co, Ltd, Beijing, China
| | - Qingying Cui
- School of Stomatology Kunming Medical University, Kunming, China
| | - Yuzhu Mu
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin, China
| | - Yifan Zhao
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin, China
| | - Jiayin Deng
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin, China
| | - Min Zhi
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin, China
| | - Yi Wu
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin, China
| | - Wei Jing
- Beijing Biosis Healing Biological Technology Co, Ltd, Beijing, China
| | - Xian Liu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, ChengDu, China
| | - Jihong Zhao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School &Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Bo Zhao
- Beijing Biosis Healing Biological Technology Co, Ltd, Beijing, China
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Bădilă AE, Rădulescu DM, Ilie A, Niculescu A, Grumezescu AM, Rădulescu AR. Bone Regeneration and Oxidative Stress: An Updated Overview. Antioxidants (Basel) 2022; 11:318. [PMID: 35204201 PMCID: PMC8868092 DOI: 10.3390/antiox11020318] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 01/27/2022] [Accepted: 02/02/2022] [Indexed: 11/17/2022] Open
Abstract
Bone tissue engineering is a complex domain that requires further investigation and benefits from data obtained over past decades. The models are increasing in complexity as they reveal new data from co-culturing and microfluidics applications. The in vitro models now focus on the 3D medium co-culturing of osteoblasts, osteoclasts, and osteocytes utilizing collagen for separation; this type of research allows for controlled medium and in-depth data analysis. Oxidative stress takes a toll on the domain, being beneficial as well as destructive. Reactive oxygen species (ROS) are molecules that influence the differentiation of osteoclasts, but over time their increasing presence can affect patients and aid the appearance of diseases such as osteoporosis. Oxidative stress can be limited by using antioxidants such as vitamin K and N-acetyl cysteine (NAC). Scaffolds and biocompatible coatings such as hydroxyapatite and bioactive glass are required to isolate the implant, protect the zone from the metallic, ionic exchange, and enhance the bone regeneration by mimicking the composition and structure of the body, thus enhancing cell proliferation. The materials can be further functionalized with growth factors that create a better response and higher chances of success for clinical use. This review highlights the vast majority of newly obtained information regarding bone tissue engineering, such as new co-culturing models, implant coatings, scaffolds, biomolecules, and the techniques utilized to obtain them.
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Zhang Z, Sun X, Yang J, Wang C. In vitro evaluation of freeze-drying chitosan-mineralized collagen/Mg-Ca alloy composites for osteogenesis. J Biomater Appl 2022; 36:1359-1377. [PMID: 34995142 DOI: 10.1177/08853282211049296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Magnesium (Mg) alloy with good mechanical properties and biodegradability is considered as one of the ideal bone repair materials. However, the rapid corrosion of Mg-based metals can pose harm to the function of an implant in clinical applications. In this study, micro-arc oxidation coating was prepared on the surface of the Mg-Ca matrix, then the chitosan and mineralized collagen (nano-hydroxyapatite/collagen; nHAC) were immobilized on the surface of the MAO/Mg-Ca matrix to construct the CS-nHAC/Mg-Ca composites of different component proportions (the ratio of CS to nHAC is 2:1, 1:1, and 1:2, respectively). The corrosion resistance, osteogenic activity, and angiogenic ability were extensively investigated. The results indicated that the CS-nHAC reinforcement materials can improve the corrosion resistance of the Mg matrix significantly and promote the proliferation and adhesion of mouse embryo osteoblast precursor cells (MC3T3-E1) and human umbilical vein endothelial cells (HUVECs). In addition, the CS-nHAC/Mg-Ca composites can not only promote the alkaline phosphatase (ALP) activity and extracellular matrix mineralization of MC3T3-E1 cells but also enhance the migration motility and vascular endothelial growth factor (VEGF) expression of HUVECs. Meanwhile, the 2CS-1nHAC/Mg-Ca composite exhibited the optimum function characteristics compared with other samples. Therefore, considering the improvement of corrosion resistance and biocompatibility, the CS-nHAC/Mg-Ca composites are expected to be a promising orthopedic implant.
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Affiliation(s)
- Zhenbao Zhang
- 154516Department of Prosthodontics, The Second Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Xirao Sun
- 154516Department of Prosthodontics, The Second Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Jingxin Yang
- 70541Beijing Key Laboratory of Information Service Engineering, Beijing Union University, Beijing, China.,70541College of Robotics, Beijing Union University, Beijing, China
| | - Chengyue Wang
- 154516Department of Prosthodontics, The Second Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
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Guerrero J, Dasen B, Frismantiene A, Pigeot S, Ismail T, Schaefer DJ, Philippova M, Resink TJ, Martin I, Scherberich A. OUP accepted manuscript. Stem Cells Transl Med 2022; 11:213-229. [PMID: 35259280 PMCID: PMC8929526 DOI: 10.1093/stcltm/szab021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 10/31/2021] [Indexed: 11/24/2022] Open
Abstract
Cells of the stromal vascular fraction (SVF) of human adipose tissue have the capacity to generate osteogenic grafts with intrinsic vasculogenic properties. However, cultured adipose-derived stromal cells (ASCs), even after minimal monolayer expansion, lose osteogenic capacity in vivo. Communication between endothelial and stromal/mesenchymal cell lineages has been suggested to improve bone formation and vascularization by engineered tissues. Here, we investigated the specific role of a subpopulation of SVF cells positive for T-cadherin (T-cad), a putative endothelial marker. We found that maintenance during monolayer expansion of a T-cad-positive cell population, composed of endothelial lineage cells (ECs), is mandatory to preserve the osteogenic capacity of SVF cells in vivo and strongly supports their vasculogenic properties. Depletion of T-cad-positive cells from the SVF totally impaired bone formation in vivo and strongly reduced vascularization by SVF cells in association with decreased VEGF and Adiponectin expression. The osteogenic potential of T-cad-depleted SVF cells was fully rescued by co-culture with ECs from a human umbilical vein (HUVECs), constitutively expressing T-cad. Ectopic expression of T-cad in ASCs stimulated mineralization in vitro but failed to rescue osteogenic potential in vivo, indicating that the endothelial nature of the T-cad-positive cells is the key factor for induction of osteogenesis in engineered grafts based on SVF cells. This study demonstrates that crosstalk between stromal and T-cad expressing endothelial cells within adipose tissue critically regulates osteogenesis, with VEGF and adiponectin as associated molecular mediators.
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Affiliation(s)
- Julien Guerrero
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Boris Dasen
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Agne Frismantiene
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Sebastien Pigeot
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Tarek Ismail
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
- Department of Plastic, Reconstructive, Aesthetic and Hand Surgery, University Hospital Basel, Basel, Switzerland
| | - Dirk J Schaefer
- Department of Plastic, Reconstructive, Aesthetic and Hand Surgery, University Hospital Basel, Basel, Switzerland
| | - Maria Philippova
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Therese J Resink
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Ivan Martin
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Arnaud Scherberich
- Corresponding author: Arnaud Scherberich, Department of Biomedicine, Hebelstrasse 20, University Hospital Basel, 4031 Basel, Switzerland. Tel: +41 061 328 73 75;
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Hüfner M, Rauch N, Schwarz-Herzke B, Knorr IJ, Sager M, Drescher D, Becker K. Micro-angiogenic patterns around orthodontic implants migrating in bone: A micro-CT study in the rat tail model. J Clin Periodontol 2021; 49:188-197. [PMID: 34818684 DOI: 10.1111/jcpe.13577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/13/2021] [Accepted: 11/05/2021] [Indexed: 11/27/2022]
Abstract
AIM Recent studies revealed that implants can migrate in bone when subjected to continuous loading. Since this process is suspected to be accompanied by bone remodelling, which requires blood vessel formation, the present work aimed at assessing the micro-angiogenic patterns around migrating implants. MATERIALS AND METHODS In 16 rats, two customized implants were placed in a single tail vertebra and connected with contraction springs (forces: 0 N, 0.5 N, 1.0 N, 1.5 N). After 2 or 8 weeks of loading, the animals were scanned by micro-CT before and after vasculature perfusion with a silicone rubber. Vessels were segmented by subtraction of the two micro-CT scans. Vessel thickness (V.Th), vessel volume per total volume (VV/TV), and vascular spacing (V.Sp) were assessed in a peri-implant volume of interest (VOI) around each implant. RESULTS At 2 weeks of loading, force magnitude was significantly associated with VV/TV and V.Th values (χ2 = 10.942, p < .001 and χ2 = 6.028, p = .010, respectively). No significant differences were observed after 8 weeks of loading. CONCLUSIONS Within the limitations of an animal study, peri-implant vessel thickness and density were associated with force magnitude in the early loading phase, whereas effects diminished after 8 weeks of loading.
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Affiliation(s)
- Mira Hüfner
- Department of Orthodontics, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
| | - Nicole Rauch
- Department of Oral Surgery, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
| | | | - Ivonne Jeanette Knorr
- Central Unit for Animal Research and Scientific Animal Welfare Affairs, University of Düsseldorf, Düsseldorf, Germany
| | - Martin Sager
- Central Unit for Animal Research and Scientific Animal Welfare Affairs, University of Düsseldorf, Düsseldorf, Germany
| | - Dieter Drescher
- Department of Orthodontics, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
| | - Kathrin Becker
- Department of Orthodontics, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
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Jara CP, de Andrade Berti B, Mendes NF, Engel DF, Zanesco AM, Pereira de Souza GF, de Medeiros Bezerra R, de Toledo Bagatin J, Maria-Engler SS, Morari J, Velander WH, Velloso LA, Araújo EP. Glutamic acid promotes hair growth in mice. Sci Rep 2021; 11:15453. [PMID: 34326383 PMCID: PMC8322389 DOI: 10.1038/s41598-021-94816-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 07/14/2021] [Indexed: 02/07/2023] Open
Abstract
Glutamic acid is the main excitatory neurotransmitter acting both in the brain and in peripheral tissues. Abnormal distribution of glutamic acid receptors occurs in skin hyperproliferative conditions such as psoriasis and skin regeneration; however, the biological function of glutamic acid in the skin remains unclear. Using ex vivo, in vivo and in silico approaches, we showed that exogenous glutamic acid promotes hair growth and keratinocyte proliferation. Topical application of glutamic acid decreased the expression of genes related to apoptosis in the skin, whereas glutamic acid increased cell viability and proliferation in human keratinocyte cultures. In addition, we identified the keratinocyte glutamic acid excitotoxic concentration, providing evidence for the existence of a novel skin signalling pathway mediated by a neurotransmitter that controls keratinocyte and hair follicle proliferation. Thus, glutamic acid emerges as a component of the peripheral nervous system that acts to control cell growth in the skin. These results raise the perspective of the pharmacological and nutritional use of glutamic acid to treat skin diseases.
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Affiliation(s)
- Carlos Poblete Jara
- Faculty of Nursing, University of Campinas, UNICAMP, Tessalia Vieira de Camargo St., 126, Campinas, SP, 13083-887, Brazil.
- Laboratory of Cell Signalling, Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas, Brazil.
- University of Campinas, Campinas, Brazil.
- Department of Chemical and Biomolecular Engineering, University of Nebraska, Lincoln, NE, USA.
| | - Beatriz de Andrade Berti
- Faculty of Nursing, University of Campinas, UNICAMP, Tessalia Vieira de Camargo St., 126, Campinas, SP, 13083-887, Brazil
- Laboratory of Cell Signalling, Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas, Brazil
- University of Campinas, Campinas, Brazil
| | - Natália Ferreira Mendes
- Faculty of Nursing, University of Campinas, UNICAMP, Tessalia Vieira de Camargo St., 126, Campinas, SP, 13083-887, Brazil
- Laboratory of Cell Signalling, Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas, Brazil
- University of Campinas, Campinas, Brazil
| | - Daiane Fátima Engel
- Faculty of Medical Sciences, University of Campinas, UNICAMP, Campinas, Brazil
- Laboratory of Cell Signalling, Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas, Brazil
- University of Campinas, Campinas, Brazil
| | - Ariane Maria Zanesco
- Faculty of Medical Sciences, University of Campinas, UNICAMP, Campinas, Brazil
- Laboratory of Cell Signalling, Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas, Brazil
- University of Campinas, Campinas, Brazil
| | - Gabriela Freitas Pereira de Souza
- Department of Organic Chemistry, Institute of Chemistry, University of Campinas, UNICAMP, Campinas, Brazil
- University of Campinas, Campinas, Brazil
| | - Renan de Medeiros Bezerra
- Faculty of Nursing, University of Campinas, UNICAMP, Tessalia Vieira de Camargo St., 126, Campinas, SP, 13083-887, Brazil
- Laboratory of Cell Signalling, Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas, Brazil
- University of Campinas, Campinas, Brazil
| | - Julia de Toledo Bagatin
- School of Pharmaceutical Sciences, Clinical Chemistry and Toxicology Department, University of São Paulo, São Paulo, Brazil
| | - Silvya Stuchi Maria-Engler
- School of Pharmaceutical Sciences, Clinical Chemistry and Toxicology Department, University of São Paulo, São Paulo, Brazil
| | - Joseane Morari
- Faculty of Medical Sciences, University of Campinas, UNICAMP, Campinas, Brazil
- Laboratory of Cell Signalling, Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas, Brazil
- University of Campinas, Campinas, Brazil
| | - William H Velander
- Department of Chemical and Biomolecular Engineering, University of Nebraska, Lincoln, NE, USA
| | - Lício A Velloso
- Faculty of Medical Sciences, University of Campinas, UNICAMP, Campinas, Brazil
- Laboratory of Cell Signalling, Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas, Brazil
- University of Campinas, Campinas, Brazil
| | - Eliana Pereira Araújo
- Faculty of Nursing, University of Campinas, UNICAMP, Tessalia Vieira de Camargo St., 126, Campinas, SP, 13083-887, Brazil
- Laboratory of Cell Signalling, Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas, Brazil
- University of Campinas, Campinas, Brazil
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10
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Zhang Q, Zhang J, Chen L, Fan Y, Long J, Liu S. Osteogenic and Angiogenic Potency of VEGF165-Transfected Canine Bone Marrow Mesenchymal Cells Combined with Coral Hydroxyapatite in Vitro. Tissue Eng Regen Med 2021; 18:875-886. [PMID: 34302695 DOI: 10.1007/s13770-021-00368-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 06/16/2021] [Accepted: 06/16/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND To explore the osteogenic and angiogenic potential of human vascular endothelial growth factor 165 (hVEGF165) gene-transfected canine bone marrow mesenchymal stem cells (BMSCs) combined with coral hydroxyapatite (CHA) scaffold. METHODS We constructed a lentiviral vector and transfected canine BMSCs with the best multiplicity of infection. Osteogenesis was induced in the transfected groups (GFP-BMSCs group and hVEGF-BMSCs group) and non-transfected group (BMSCs group), followed by the evaluation of alkaline phosphatase (ALP) activity and alizarin red S staining. Cells from the three groups were co-cultured with CHA granules, respectively to obtain the tissue-engineered bone. MTT assay and fluorescence microscopy were employed to assess cell proliferation and adhesion. The expression of osteogenic and angiogenic related genes and proteins were evaluated at 7, 14, 21, and 28 days post osteoinduction in cell culture alone and cell co-culture with CHA, respectively using RT-PCR and ELISA. RESULTS The hVEGF165 gene was transfected into BMSCs successfully. Higher ALP activity and more calcified nodules were found in the hVEGF-BMSCs group than in the control groups (p < 0.001). Cells attached and proliferated in CHA particles. Both cells cultured alone and cells co-culture with CHA expressed more osteogenic and angiogenic related genes and proteins in the hVEGF-BMSCs group compared to the GFP-BMSCs and BMSCs groups (p < 0.05). CONCLUSION High expression of hVEGF165 in BMSCs potentially promote the osteogenic potential of BMSCs, and synergically drive the expression of other osteogenic and angiogenic factors. hVEGF-BMSCs co-cultured with CHA expressed more osteogenic and angiogenic related factors, creating a favorable microenvironment for osteogenesis and angiogenesis. Also, the findings have allowed for the construction of a CHA-hVEGF-BMSCs tissue-engineered bone.
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Affiliation(s)
- Quanyin Zhang
- Stomatological Hospital, Southern Medical University, S366 Jiangnan Boulevard, Guangzhou, 510280, China
| | - Jie Zhang
- Stomatological Hospital, Southern Medical University, S366 Jiangnan Boulevard, Guangzhou, 510280, China
| | - Lin Chen
- Stomatological Hospital, Southern Medical University, S366 Jiangnan Boulevard, Guangzhou, 510280, China
| | - Yunjian Fan
- Stomatological Hospital, Southern Medical University, S366 Jiangnan Boulevard, Guangzhou, 510280, China
| | - Jiazhen Long
- Stomatological Hospital, Southern Medical University, S366 Jiangnan Boulevard, Guangzhou, 510280, China
| | - Shuguang Liu
- Stomatological Hospital, Southern Medical University, S366 Jiangnan Boulevard, Guangzhou, 510280, China.
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11
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Zhang YL, Zhu ZZ, Zhang LC, Wang G. Lithium chloride prevents glucocorticoid-induced osteonecrosis of femoral heads and strengthens mesenchymal stem cell activity in rats. Chin Med J (Engl) 2021. [PMID: 34224402 DOI: 10.1097/CM9.0000000000001530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Background: Accumulating evidence suggests that lithium influences mesenchymal stem cell (MSC) proliferation and osteogenic differentiation. As decreased bone formation in femoral heads is induced by glucocorticoids (GCs), we hypothesized that lithium has a protective effect on GC-induced osteonecrosis of femoral heads (ONFH). Methods: A rat ONFH model was induced by methylprednisolone (MP) and the effect of lithium chloride on the models was evaluated. Micro-computed tomography (CT)-based angiography and bone scanning were performed to analyze the vessels and bone structure in the femoral heads. Hematoxylin and eosin and immunohistochemical staining were performed to evaluate the trabecular structure and osteocalcin (OCN) expression, respectively. Bone marrow-derived MSCs were isolated from the models, and their proliferative and osteogenic ability was evaluated. Western blotting and quantitative real-time polymerase chain reaction were performed to detect osteogenic-related proteins including Runx2, alkaline phosphatase, and Collagen I. Results: Micro-CT analysis showed a high degree of osteonecrotic changes in the rats that received only MP injection. Treatment with lithium reduced this significantly in rats that received lithium (MP + Li group); while 18/20 of the femoral heads in the MP showed severe osteonecrosis, only 5/20 in the MP + Li showed mild osteonecrotic changes. The MP + Li group also displayed a higher vessel volume than the MP group (0.2193 mm3vs. 0.0811 mm3, P < 0.05), shown by micro-CT-based angiography. Furthermore, histological analysis showed better trabecular structures and more OCN expression in the femoral heads of the MP + Li group compared with the MP group. The ex vivo investigation indicated higher proliferative and osteogenic ability and upregulated osteogenic-related proteins in MSCs extracted from rats in the MP + Li group than that in the MP group. Conclusions: We concluded that lithium chloride has a significant protective effect on GC-induced ONFH in rats and that lithium also enhances MSC proliferation and osteogenic differentiation in rats after GC administration.
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12
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Ye Y, Liu Q, Li C, He P. miR-125a-5p Regulates Osteogenic Differentiation of Human Adipose-Derived Mesenchymal Stem Cells under Oxidative Stress. Biomed Res Int 2021; 2021:6684709. [PMID: 34195280 PMCID: PMC8203358 DOI: 10.1155/2021/6684709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 03/09/2021] [Accepted: 05/23/2021] [Indexed: 11/22/2022]
Abstract
Adipose-derived mesenchymal stem cells (ADSCs) are a well-recognized multilineage stem cell with vital clinical feasibility for tissue regeneration. Extensive evidence indicates that oxidative stress and microRNAs (miRNAs/miRs) play an important role in the osteoinduction of adipose-derived mesenchymal stem cells. In this study, we investigated the mechanism of miR-125a-5p in regulating the osteogenesis of human adipose-derived mesenchymal stem cells (hADSCs) under oxidative stress. The expression of miR-125a-5p lessened gradually during the osteogenic differentiation of hADSCs. Relative to the negative group, the expression levels of runt-related transcription factor 2 (RUNX2), alkaline phosphatase (ALP), osteocalcin (OCN), and osterix in the miR-125a-5p group were marked lower than those in the miR-125a-5p inhibitor group. The levels of p16, p21, p53, miR-125a-5p, and ROS during osteoinduction of hADSCs were assessed in vitro under oxidative stress and were observed to be upregulated. Further experiments showed that oxidative stress and miR-125a-5p together suppressed the expression of VEGF during osteogenic differentiation of hADSCs and that the inhibition of miR-125a-5p reversed the effect of oxidative stress. In short, our study indicated that miR-125a-5p is induced under oxidative stress and inhibits the expression of VEGF, leading to the reduction of osteogenic differentiation of hADSCs. Our outcomes showed that miR-125a-5p could be a potential clinical target for bone repairing.
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Affiliation(s)
- Yongheng Ye
- Department of Joint Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Quan Liu
- Department of Orthopaedic Surgery, The First People's Hospital of Nankang, Ganzhou 341400, China
| | - Changzhao Li
- Department of Joint Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Peiheng He
- Department of Joint Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
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Sun B, Liu Y, Huang W, Zhang Q, Lin J, Li W, Zhang J, Chen F. Functional identification of a rare vascular endothelial growth factor a ( VEGFA) variant associating with the nonsyndromic cleft lip with/without cleft palate. Bioengineered 2021; 12:1471-1483. [PMID: 33947308 PMCID: PMC8806239 DOI: 10.1080/21655979.2021.1912547] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Vascular endothelial growth factor A (VEGFA) is a crucial growth factor, which participates in multiple processes of human growth and development, such as angiogenesis and osteogenesis and is also necessary for development of palate. The purpose of this study was to investigate the effect of a rare VEGFA mutation (NM_001025366.2 773 T > C p.Val258Ala) on the cell functions and osteogenesis. Here, we found that the VEGFA mutation has adverse effects on the function of human embryonic palatal plate mesenchymal (HEPM) cells, and may affect the development of palate. The VEGFA mutation has adverse effects on promoting cell proliferation and migration and inhibiting apoptosis in HEPM and HEK–293 cells. In addition, the mutant VEGFA allele has a negative influence on osteogenesis. Taken together, the rare variant of the VEGFA gene had an adverse effect on cell functions and osteogenesis, which may impact the development of the palate. And these findings suggested that VEGFA mutation (c.773 T > C) may lead to nonsyndromic cleft lip with or without cleft palate and also provide a new insight into the mechanism of VEGFA gene in osteogenesis and palatogenesis.
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Affiliation(s)
- Bohui Sun
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - Yangjia Liu
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
| | - Wenbin Huang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - Qian Zhang
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
| | - Jiuxiang Lin
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - Weiran Li
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - Jieni Zhang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - Feng Chen
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
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14
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Stucker S, De Angelis J, Kusumbe AP. Heterogeneity and Dynamics of Vasculature in the Endocrine System During Aging and Disease. Front Physiol 2021; 12:624928. [PMID: 33767633 PMCID: PMC7987104 DOI: 10.3389/fphys.2021.624928] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 02/09/2021] [Indexed: 12/11/2022] Open
Abstract
The endocrine system consists of several highly vascularized glands that produce and secrete hormones to maintain body homeostasis and regulate a range of bodily functions and processes, including growth, metabolism and development. The dense and highly vascularized capillary network functions as the main transport system for hormones and regulatory factors to enable efficient endocrine function. The specialized capillary types provide the microenvironments to support stem and progenitor cells, by regulating their survival, maintenance and differentiation. Moreover, the vasculature interacts with endocrine cells supporting their endocrine function. However, the structure and niche function of vasculature in endocrine tissues remain poorly understood. Aging and endocrine disorders are associated with vascular perturbations. Understanding the cellular and molecular cues driving the disease, and age-related vascular perturbations hold potential to manage or even treat endocrine disorders and comorbidities associated with aging. This review aims to describe the structure and niche functions of the vasculature in various endocrine glands and define the vascular changes in aging and endocrine disorders.
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Affiliation(s)
| | | | - Anjali P. Kusumbe
- Tissue and Tumor Microenvironments Group, Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, United Kingdom
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15
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Wang Y, Zheng Y, Li W. Compression loading of osteoclasts attenuated microRNA-146a-5p expression, which promotes angiogenesis by targeting adiponectin. Sci China Life Sci 2021; 65:151-166. [PMID: 33677819 DOI: 10.1007/s11427-020-1869-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 01/06/2021] [Indexed: 11/24/2022]
Abstract
Osteoclastogenesis in alveolar bone induced by compression stress triggers orthodontic tooth movement. Compression stress also stimulates angiogenesis, which is essential for osteoclastogenesis. However, the effects of osteoclastogenesis induced by compression on angiogenesis are poorly understood. In vivo, we found the markers of angiogenesis increased during orthodontic bone remodeling. In vitro, osteoclast-derived exosomes increased proliferation, migration, and tube formation of human umbilical vein endothelial cells (HUVECs), as well as expression of vascular endothelial growth factor and CD31. The promotive effects of exosomes derived from compressed osteoclasts were greater than those derived from osteoclasts without compression. Next, we analyzed changes in the microRNA transcriptome after compression stress and focused on microRNA146a-5p (miR-146a), which was significantly decreased by compression. Transfection of an inhibitor of miR-146a stimulated angiogenesis of HUVECs while miR-146a mimics repressed angiogenesis. Adiponectin (ADP) was confirmed to be a target of miR-146a by dual luciferase reporter assay. In HUVECs treated with exosomes, we detected increased ADP which promoted angiogenesis. Knockdown of ADP in HUVECs reduced the promotive effects of exosomes. Our results demonstrate that the decreased miR-146a observed in osteoclasts after compression promotes angiogenesis by targeting ADP, suggesting a novel method to interfere with bone remodeling induced by compression stress.
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Affiliation(s)
- Yue Wang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Yunfei Zheng
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China.
| | - Weiran Li
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China.
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16
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Liu W, Du B, Tan S, Wang Q, Li Y, Zhou L. Vertical Guided Bone Regeneration in the Rabbit Calvarium Using Porous Nanohydroxyapatite Block Grafts Coated with rhVEGF 165 and Cortical Perforation. Int J Nanomedicine 2020; 15:10059-10073. [PMID: 33335394 PMCID: PMC7737884 DOI: 10.2147/ijn.s268182] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 10/13/2020] [Indexed: 12/19/2022] Open
Abstract
Introduction Vertical bone augmentation without osseous walls to support the stability of clots and bone grafts remains a challenge in dental implantology. The objectives of this study were to confirm that cortical perforation of the recipient bed is necessary and to evaluate whether nanohydroxyapatite (nHA) block grafts coated with recombinant human vascular endothelial growth factor165 (rhVEGF165) and cortical perforation can improve vertical bone regeneration. Materials and Methods We prepared nHA blocks coated with or without rhVEGF165 on the rabbit calvarium through cortical perforation, and designated the animals as the nonperforated group (N-nHA), rhVEGF165 group (NV-nHA), perforated group (P-nHA) and rhVEGF165 on perforated group (PV-nHA). Micro-computed tomography (micro-CT) and fluorescence microscopy were selected to evaluate parameters of vertical bone regeneration at 4 and 6 weeks. Results The ratio of the newly formed bone volume to the titanium dome volume (BV/TV) and the bone mineral density (BMD) were significantly higher in the PV-nHA group than in the N-nHA group at 4 and 6 weeks, as determined using micro-CT. The fluorescence analysis showed slightly greater increases in new bone regeneration (NB%) and vertical height (VH%) gains in the P-nHA group than in the N-nHA group. Greater increases in NB% and VH% were observed in groups treated with rhVEGF165 and perforation than in the blank groups, with significant differences detected at 4 and 6 weeks (N-nHA compared with PV-nHA, p<0.05). A greater VH% that was observed at the midline of the block in the PV-nHA group than in the other three groups at both time points (0.75±0.53% at 4 weeks and 0.83±0.42% at 6 weeks). Conclusion According to the present study, cortical perforation is necessary and nHA blocks coated with rhVEGF165 and decoration could work synergistically to improve vertical bone regeneration by directly affecting primary osteoblasts and promoting angiogenesis and osteoinduction.
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Affiliation(s)
- Weizhen Liu
- Department of Periodontics, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Bing Du
- Center of Stomatology, The Second People's Hospital of Foshan, Foshan, Guangdong, People's Republic of China
| | - Siyi Tan
- Center of Stomatology, Panyu Central Hospital, Guangzhou, Guangdong, People's Republic of China
| | - Qin Wang
- Department of Oral Maxillofacial Surgery, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Yi Li
- Department of Periodontics, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Lei Zhou
- Center of Oral Implantology, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
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17
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Liu Z, Liu L, Cheng X, Gao L. Expression and predictive value of HIF-1α and VEGF in patients with burns following treatment. Exp Ther Med 2020; 20:141. [PMID: 33093879 PMCID: PMC7571334 DOI: 10.3892/etm.2020.9270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 05/15/2020] [Indexed: 11/28/2022] Open
Abstract
The present study aimed to investigate the expression and predictive value of serum hypoxia-inducible factor-1α (HIF-1α) and vascular endothelial growth factor (VEGF) in patients with burns following treatment. A total of 84 patients with burns treated in Jinan City People's Hospital (Jinan, China) between June 2015 and August 2017 were selected and their clinical information was collected. The expression levels of HIF-1α and VEGF before and after treatment were detected via ELISA, and HIF-1α and VEGF levels in patients with effective and ineffective treatment were compared. The predictive values of HIF-1α and VEGF in clinical efficacy were determined using receiver operating characteristic (ROC) curves, and independent risk factors affecting treatment inefficacy were analyzed via multivariate logistic regression. It was revealed that HIF-1α decreased significantly (P<0.05) while VEGF significantly increased in patients after treatment. Patients with effective treatment presented significantly lower HIF-1α levels and higher VEGF levels compared with those with ineffective treatment. The ROC curve indicated that the area under the curve (AUC) of HIF-1α for treatment efficacy was 0.795, the 95% CI was 0.666-0.924, the specificity and sensitivity were 68.75 and 80.88%, respectively, and the Youden index was 49.63%. For VEGF, the AUC, 95% CI, specificity, sensitivity and Youden index were 0.826, 0.725-0.928, 68.75, 82.35 and 51.10% respectively. Moreover, under the joint detection of HIF-1α and VEGF, the AUC was 0.847, 95% CI was 0.746-0.947, specificity and sensitivity were 87.50 and 66.18%, respectively, with a Youden index of 53.68%. Multivariate analysis demonstrated that higher HIF-1α level, lower VEGF level and higher burn degree before treatment were independent risk factors for treatment inefficacy. HIF-1α levels decreased and VEGF levels increased in burn patients after treatment. HIF-1α and VEGF before treatment may therefore serve as predictors for treatment efficacy.
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Affiliation(s)
- Zhufeng Liu
- Department of Burn Dermatology, Jinan City People's Hospital, Jinan, Shandong 271100, P.R. China
| | - Ling Liu
- Department of Burn Dermatology, Jinan City People's Hospital, Jinan, Shandong 271100, P.R. China
| | - Xuejuan Cheng
- Department of Nursing, The People's Hospital of Zouping City, Binzhou, Shandong 256200, P.R. China
| | - Liming Gao
- Department of Burn Dermatology, Jinan City People's Hospital, Jinan, Shandong 271100, P.R. China
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18
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Stucker S, Chen J, Watt FE, Kusumbe AP. Bone Angiogenesis and Vascular Niche Remodeling in Stress, Aging, and Diseases. Front Cell Dev Biol 2020; 8:602269. [PMID: 33324652 PMCID: PMC7726257 DOI: 10.3389/fcell.2020.602269] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 11/05/2020] [Indexed: 02/05/2023] Open
Abstract
The bone marrow (BM) vascular niche microenvironments harbor stem and progenitor cells of various lineages. Bone angiogenesis is distinct and involves tissue-specific signals. The nurturing vascular niches in the BM are complex and heterogenous consisting of distinct vascular and perivascular cell types that provide crucial signals for the maintenance of stem and progenitor cells. Growing evidence suggests that the BM niche is highly sensitive to stress. Aging, inflammation and other stress factors induce changes in BM niche cells and their crosstalk with tissue cells leading to perturbed hematopoiesis, bone angiogenesis and bone formation. Defining vascular niche remodeling under stress conditions will improve our understanding of the BM vascular niche and its role in homeostasis and disease. Therefore, this review provides an overview of the current understanding of the BM vascular niches for hematopoietic stem cells and their malfunction during aging, bone loss diseases, arthritis and metastasis.
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Affiliation(s)
- Sina Stucker
- Tissue and Tumor Microenvironments Group, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, United Kingdom
| | - Junyu Chen
- Tissue and Tumor Microenvironments Group, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, United Kingdom
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Fiona E. Watt
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, United Kingdom
| | - Anjali P. Kusumbe
- Tissue and Tumor Microenvironments Group, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, United Kingdom
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, United Kingdom
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19
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Park JS, Piao J, Park G, Hong HS. Substance-P Restores Cellular Activity of ADSC Impaired by Oxidative Stress. Antioxidants (Basel) 2020; 9:E978. [PMID: 33053897 PMCID: PMC7601553 DOI: 10.3390/antiox9100978] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/09/2020] [Accepted: 10/11/2020] [Indexed: 02/08/2023] Open
Abstract
Oxidative stress induces cellular damage, which accelerates aging and promotes the development of serious illnesses. Adipose-derived stem cells (ADSCs) are novel cellular therapeutic tools and have been applied for tissue regeneration. However, ADSCs from aged and diseased individuals may be affected in vivo by the accumulation of free radicals, which can impair their therapeutic efficacy. Substance-P (SP) is a neuropeptide that is known to rescue stem cells from senescence and inflammatory attack, and this study explored the restorative effect of SP on ADSCs under oxidative stress. ADSCs were transiently exposed to H2O2, and then treated with SP. H2O2 treatment decreased ADSC cell viability, proliferation, and cytokine production and this activity was not recovered even after the removal of H2O2. However, the addition of SP increased cell viability and restored paracrine potential, leading to the accelerated repopulation of ADSCs injured by H2O2. Furthermore, SP was capable of activating Akt/GSK-3β signaling, which was found to be downregulated following H2O2 treatment. This might contribute to the restorative effect of SP on injured ADSCs. Collectively, SP can protect ADSCs from oxidant-induced cell damage, possibly by activating Akt/GSK-3β signaling in ADSCs. This study supports the possibility that SP can recover cell activity from oxidative stress-induced dysfunction.
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Affiliation(s)
- Jeong Seop Park
- Department of Biomedical Science and Technology, Graduate School, Kyung Hee University, Seoul 02447, Korea;
| | - Jiyuan Piao
- Department of Genetic Engineering, College of Life Science and Graduate School of Biotechnology, Kyung Hee University, Yong In 17104, Korea; (J.P.); (G.P.)
| | - Gabee Park
- Department of Genetic Engineering, College of Life Science and Graduate School of Biotechnology, Kyung Hee University, Yong In 17104, Korea; (J.P.); (G.P.)
| | - Hyun Sook Hong
- Department of Biomedical Science and Technology, Graduate School, Kyung Hee University, Seoul 02447, Korea;
- East-West Medical Research Institute, Kyung Hee University, Seoul 02447, Korea
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20
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Oliver JD, Jia S, Halpern LR, Graham EM, Turner EC, Colombo JS, Grainger DW, D'Souza RN. Innovative Molecular and Cellular Therapeutics in Cleft Palate Tissue Engineering. Tissue Eng Part B Rev 2020; 27:215-237. [PMID: 32873216 DOI: 10.1089/ten.teb.2020.0181] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Clefts of the lip and/or palate are the most prevalent orofacial birth defects occurring in about 1:700 live human births worldwide. Early postnatal surgical interventions are extensive and staged to bring about optimal growth and fusion of palatal shelves. Severe cleft defects pose a challenge to correct with surgery alone, resulting in complications and sequelae requiring life-long, multidisciplinary care. Advances made in materials science innovation, including scaffold-based delivery systems for precision tissue engineering, now offer new avenues for stimulating bone formation at the site of surgical correction for palatal clefts. In this study, we review the present scientific literature on key developmental events that can go awry in palate development and the common surgical practices and challenges faced in correcting cleft defects. How key osteoinductive pathways implicated in palatogenesis inform the design and optimization of constructs for cleft palate correction is discussed within the context of translation to humans. Finally, we highlight new osteogenic agents and innovative delivery systems with the potential to be adopted in engineering-based therapeutic approaches for the correction of palatal defects. Impact statement Tissue-engineered scaffolds supplemented with osteogenic growth factors have attractive, largely unexplored possibilities to modulate molecular signaling networks relevant to driving palatogenesis in the context of congenital anomalies (e.g., cleft palate). Constructs that address this need may obviate current use of autologous bone grafts, thereby avoiding donor-site morbidity and other regenerative challenges in patients afflicted with palatal clefts. Combinations of biomaterials and drug delivery of diverse regenerative cues and biologics are currently transforming strategies exploited by engineers, scientists, and clinicians for palatal cleft repair.
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Affiliation(s)
- Jeremie D Oliver
- School of Dentistry, University of Utah Health Sciences, Salt Lake City, Utah, USA.,Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah, USA
| | - Shihai Jia
- School of Dentistry, University of Utah Health Sciences, Salt Lake City, Utah, USA
| | - Leslie R Halpern
- School of Dentistry, University of Utah Health Sciences, Salt Lake City, Utah, USA
| | - Emily M Graham
- School of Medicine, University of Utah Health Sciences, Salt Lake City, Utah, USA
| | - Emma C Turner
- University of Western Australia Dental School, Perth, Western Australia
| | - John S Colombo
- University of Las Vegas at Nevada School of Dental Medicine, Las Vegas, Nevada, USA
| | - David W Grainger
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah, USA.,Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah Health Sciences, Salt Lake City, Utah, USA
| | - Rena N D'Souza
- School of Dentistry, University of Utah Health Sciences, Salt Lake City, Utah, USA.,Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah, USA.,School of Medicine, University of Utah Health Sciences, Salt Lake City, Utah, USA
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Abstract
Coupling between angiogenesis and osteogenesis has an important role in both normal bone injury repair and successful application of tissue‐engineered bone for bone defect repair. Type H blood vessels are specialized microvascular components that are closely related to the speed of bone healing. Interactions between type H endothelial cells and osteoblasts, and high expression of CD31 and EMCN render the environment surrounding these blood vessels rich in factors conducive to osteogenesis and promote the coupling of angiogenesis and osteogenesis. Type H vessels are mainly distributed in the metaphysis of bone and densely surrounded by Runx2+ and Osterix+ osteoprogenitors. Several other factors, including hypoxia‐inducible factor‐1α, Notch, platelet‐derived growth factor type BB, and slit guidance ligand 3 are involved in the coupling of type H vessel formation and osteogenesis. In this review, we summarize the identification and distribution of type H vessels and describe the mechanism for type H vessel‐mediated modulation of osteogenesis. Type H vessels provide new insights for detection of the molecular and cellular mechanisms that underlie the crosstalk between angiogenesis and osteogenesis. As a result, more feasible therapeutic approaches for treatment of bone defects by targeting type H vessels may be applied in the future.
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Affiliation(s)
- Jiankang Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jian Pan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Wei Jing
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Zhang S, Zhang W, Li Y, Ren L, Deng H, Yin X, Gao X, Pan S, Niu Y. Cotransplantation of human umbilical cord mesenchymal stem cells and endothelial cells for angiogenesis and pulp regeneration in vivo. Life Sci 2020; 255:117763. [PMID: 32389831 DOI: 10.1016/j.lfs.2020.117763] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 04/30/2020] [Accepted: 05/05/2020] [Indexed: 02/06/2023]
Abstract
AIMS To explored the potential of human umbilical cord mesenchymal stem cells (hUCMSCs) as seed cells for dental pulp regeneration and the possibility of cotransplantation hUCMSCs and endothelial cells (ECs) for angiogenesis and pulp regeneration in vivo. MATERIALS AND METHODS hUCMSCs and human umbilical vein endothelial cells (HUVECs) were cocultured for matrigel angiogenesis assay in vitro and Matrigel plug assay in vivo. Next, we used the transwell coculture system to coculture hUCMSCs and HUVECs in vitro for RNA- sequencing (RNA-seq). Last, encapsulated hUCMSCs and HUVECs in scaffolds were injected into the root segments, and transplanted into immunodeficient mice for dental pulp regeneration. KEY FINDINGS In vitro Matrigel angiogenesis assay and in vivo Matrigel plug assay indicated that cocultured hUCMSCs and HUVECs promote vascular formation of HUVECs, especially in 1:5 (hUCMSCs:HUVECs) coculture group. The RNA-seq result indicated that cocultured HUVECs exhibited high Hif-1 signaling pathway activity. We performed the cell transfection assay to knock down HIF1A-AS2 in HUVECs and then coculture with hUCMSCs, and the expression of VEGFA, HIF1A and PECAM1 were reduced. In pulp regeneration assay, Cotransplantation of hUCMSCs and HUVECs (1,5) group showed pulp-like tissue regeneration. SIGNIFICANCE Cocultured hUCMSCs and HUVECs can promote vascular formation of HUVECs, and the optimal coculture ration is 1:5 (hUCMSCs:HUVECs). hUCMSCs promote angiogenesis of HUVECs through the long noncoding RNA HIF1A-AS2-activation of the Hif-1 signaling pathway. Cotransplantation of hUCMSCs and HUVECs can regenerate dental pulp-like tissue in vivo.
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Affiliation(s)
- Shuang Zhang
- The First Affiliated Hospital of Harbin Medical University, No. 23 Youzheng Street, Nangang District, Harbin 150001, China; Department of Endodontics, School of Stomatology, Harbin Medical University, No. 143 Yiman Street, Nangang District, Harbin 150001, China
| | - Weiwei Zhang
- The First Affiliated Hospital of Harbin Medical University, No. 23 Youzheng Street, Nangang District, Harbin 150001, China; Department of Endodontics, School of Stomatology, Harbin Medical University, No. 143 Yiman Street, Nangang District, Harbin 150001, China
| | - Yanping Li
- The First Affiliated Hospital of Harbin Medical University, No. 23 Youzheng Street, Nangang District, Harbin 150001, China; Department of Endodontics, School of Stomatology, Harbin Medical University, No. 143 Yiman Street, Nangang District, Harbin 150001, China
| | - Liping Ren
- Department of Prosthodontics, The First Affiliated Hospital of Harbin Medical University, No. 143 Yiman Street, Nangang District, Harbin 150001, China
| | - Haotian Deng
- The First Affiliated Hospital of Harbin Medical University, No. 23 Youzheng Street, Nangang District, Harbin 150001, China; Department of Endodontics, School of Stomatology, Harbin Medical University, No. 143 Yiman Street, Nangang District, Harbin 150001, China
| | - Xiaowei Yin
- The First Affiliated Hospital of Harbin Medical University, No. 23 Youzheng Street, Nangang District, Harbin 150001, China; Department of Endodontics, School of Stomatology, Harbin Medical University, No. 143 Yiman Street, Nangang District, Harbin 150001, China
| | - Xu Gao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Shuang Pan
- The First Affiliated Hospital of Harbin Medical University, No. 23 Youzheng Street, Nangang District, Harbin 150001, China; Department of Endodontics, School of Stomatology, Harbin Medical University, No. 143 Yiman Street, Nangang District, Harbin 150001, China.
| | - Yumei Niu
- The First Affiliated Hospital of Harbin Medical University, No. 23 Youzheng Street, Nangang District, Harbin 150001, China; Department of Endodontics, School of Stomatology, Harbin Medical University, No. 143 Yiman Street, Nangang District, Harbin 150001, China.
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Fu D, Qin K, Yang S, Lu J, Lian H, Zhao D. Proper mechanical stress promotes femoral head recovery from steroid-induced osteonecrosis in rats through the OPG/RANK/RANKL system. BMC Musculoskelet Disord 2020; 21:281. [PMID: 32359349 PMCID: PMC7196225 DOI: 10.1186/s12891-020-03301-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 04/21/2020] [Indexed: 12/15/2022] Open
Abstract
Background Long-term use of steroid may lead to osteonecrosis of the femoral head (ONFH). Mechanical stress may help bone formation and remodeling. This study aimed to probe the role of mechanical stress in the femoral head recovery in rats. Methods Rat models with ONFH were induced by steroid. Rats were subjected to different levels of mechanical stress (weight-bearing training), and then the morphology and bone density of femoral head of rats were measured. The mRNA and protein levels of the OPG/RANK/RANKL axis in rat femoral head were assessed. Gain- and loss-of function experiments of OPG were performed to identify its role in femoral head recovery following stress implement. The ex vivo cells were extracted and the effects of stress and OPG on osteogenesis in vitro were explored. Results Steroid-induced ONFH rats showed decreased bone density and increased bone spaces, as well as necrotic cell colonies and many cavities in the cortical bones and trabeculars. Proper mechanical stress or upregulation of OPG led to decreased RANK/RANKL expression and promoted femoral head recovery from steroid-induced osteonecrosis. However, excessive mechanical stress might impose too much load on the femurs thus leading even retard femoral head recovery process. In addition, the in vitro experimental results supported that proper stress and overexpression of OPG increased the osteogenesis of ex vivo cells of femoral head. Conclusion This study provided evidence that proper mechanical stress promoted femoral head recovery from steroid-induced osteonecrosis through the OPG/RANK/RANKL system, while overload might inhibit the recovery process. This study may offer novel insights for ONFH treatment.
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Affiliation(s)
- Dapeng Fu
- Department of Biomedical engineering, Dalian University of Technology, Dalian, 116024, Liaoning, People's Republic of China.,Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No. 6 Jiefang Street, Zhongshan District, Dalian, 116001, Liaoning, People's Republic of China
| | - Kairong Qin
- Department of Biomedical engineering, Dalian University of Technology, Dalian, 116024, Liaoning, People's Republic of China
| | - Sheng Yang
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No. 6 Jiefang Street, Zhongshan District, Dalian, 116001, Liaoning, People's Republic of China
| | - Jianmin Lu
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No. 6 Jiefang Street, Zhongshan District, Dalian, 116001, Liaoning, People's Republic of China
| | - Haoyi Lian
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No. 6 Jiefang Street, Zhongshan District, Dalian, 116001, Liaoning, People's Republic of China
| | - Dewei Zhao
- Department of Biomedical engineering, Dalian University of Technology, Dalian, 116024, Liaoning, People's Republic of China. .,Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No. 6 Jiefang Street, Zhongshan District, Dalian, 116001, Liaoning, People's Republic of China.
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Diomede F, Marconi GD, Cavalcanti MFXB, Pizzicannella J, Pierdomenico SD, Fonticoli L, Piattelli A, Trubiani O. VEGF/VEGF-R/RUNX2 Upregulation in Human Periodontal Ligament Stem Cells Seeded on Dual Acid Etched Titanium Disk. Materials (Basel) 2020; 13:E706. [PMID: 32033260 DOI: 10.3390/ma13030706] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 01/31/2020] [Accepted: 02/04/2020] [Indexed: 12/12/2022]
Abstract
In restorative dentistry, the main implants characteristic is the ability to promote the osseointegration process as the result of interaction between angiogenesis and osteogenesis events. On the other hand, implants cytocompatibility remains a necessary feature for the success of surgery. The purpose of the current study was to investigate the interaction between human periodontal stem cells and two different types of titanium surfaces, to verify their cytocompatibility and cell adhesion ability, and to detect osteogenic and angiogenic markers, trough cell viability assay (MTT), Confocal Laser Scanning Microscopy (CLSM), scanning electron microscopy (SEM), and gene expression (RT-PCR). The titanium surfaces, machined (CTRL) and dual acid etched (TEST), tested in culture with human periodontal ligament stem cells (hPDLSCs), were previously treated in two different ways, in order to evaluate the effects of CTRL and TEST and define the best implant surface. Furthermore, the average surface roughness (Ra) of both titanium surfaces, CTRL and TEST, has been assessed through atomic force microscopy (AFM). The vascular endothelial growth factor (VEGF) and Runt-related transcription factor 2 (RUNX2) expressions have been analyzed by RT-PCR, WB analysis, and confocal laser scanning microscopy. Data evidenced that the different morphology and topography of the TEST disk increased cell growth, cell adhesion, improved osteogenic and angiogenic events, as well osseointegration process. For this reason, the TEST surface was more biocompatible than the CTRL disk surface.
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Marshall KM, Kanczler JM, Oreffo ROC. Evolving applications of the egg: chorioallantoic membrane assay and ex vivo organotypic culture of materials for bone tissue engineering. J Tissue Eng 2020; 11:2041731420942734. [PMID: 33194169 PMCID: PMC7594486 DOI: 10.1177/2041731420942734] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 06/26/2020] [Indexed: 01/03/2023] Open
Abstract
The chick chorioallantoic membrane model has been around for over a century, applied in angiogenic, oncology, dental and xenograft research. Despite its often perceived archaic, redolent history, the chorioallantoic membrane assay offers new and exciting opportunities for material and growth factor evaluation in bone tissue engineering. Currently, superior/improved experimental methodology for the chorioallantoic membrane assay are difficult to identify, given an absence of scientific consensus in defining experimental approaches, including timing of inoculation with materials and the analysis of results. In addition, critically, regulatory and welfare issues impact upon experimental designs. Given such disparate points, this review details recent research using the ex vivo chorioallantoic membrane assay and the ex vivo organotypic culture to advance the field of bone tissue engineering, and highlights potential areas of improvement for their application based on recent developments within our group and the tissue engineering field.
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Affiliation(s)
- Karen M Marshall
- Bone and Joint Research Group, Centre for Human
Development, Stem Cells and Regeneration, Institute of Developmental Sciences,
University of Southampton, Southampton, UK
| | - Janos M Kanczler
- Bone and Joint Research Group, Centre for Human
Development, Stem Cells and Regeneration, Institute of Developmental Sciences,
University of Southampton, Southampton, UK
| | - Richard OC Oreffo
- Bone and Joint Research Group, Centre for Human
Development, Stem Cells and Regeneration, Institute of Developmental Sciences,
University of Southampton, Southampton, UK
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