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Sameni HR, Arab S, Doostmohammadi N, Bahraminasab M. Effect of calcium phosphate/bovine serum albumin coated Al 2O 3-Ti biocomposites on osteoblast response. BIOMED ENG-BIOMED TE 2024; 69:367-382. [PMID: 38258440 DOI: 10.1515/bmt-2023-0123] [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: 04/02/2023] [Accepted: 01/10/2024] [Indexed: 01/24/2024]
Abstract
OBJECTIVES The biological performance of aluminum oxide-titanium (Al2O3-Ti) composites requires special attention to achieve improved osteoblastic differentiation, and subsequent osseointegration/strong anchorage with the surrounding bone. Therefore, the aim of this study was to improve them by providing calcium phosphate (Ca-P)/bovine serum albumin (BSA) coating on their surfaces. METHODS Ca-P/BSA coatings were prepared on the surfaces of 75vol.%Ti composites (75Ti-BSA) and pure Ti (100Ti-BSA as a control). The surface characteristics, phase analysis, micro-hardness, BSA release profile and biological responses including cytotoxicity, cell viability, differentiation, mineralization, and cell adhesion were evaluated. RESULTS The results showed that lower cytotoxicity% and higher mitochondrial activity or viability % were associated with the samples with Ca-P/BSA coatings (particularly 75Ti-BSA having 21.3% cytotoxicity, 111.4% and 288.6% viability at day 1 and 7, respectively). Furthermore, the Ca-P/BSA coating could highly enhance the differentiation of pre-osteoblast cells into osteoblasts in 75Ti-BSA group (ALP concentration of 4.8 ng/ml). However, its influence on cell differentiation in 100Ti-BSA group was negligible. Similar results were also obtained from mineralization assay. The results on cell adhesion revealed that the Ca-P/BSA coated samples differently interacted with MC3T3-E1 cells; enlarged flat cells on 75Ti-BSA vs more spindle-shaped cells on 100Ti-BSA. CONCLUSIONS Ca-P/BSA coated Al2O3-Ti provided promising biological performance, superior to that of uncoated composites. Therefore, they have the potential to improve implant osseointegration.
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Affiliation(s)
- Hamid Reza Sameni
- Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran
- Department of Tissue Engineering and Applied Cell Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Samaneh Arab
- Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran
- Department of Tissue Engineering and Applied Cell Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Nesa Doostmohammadi
- Department of Tissue Engineering and Applied Cell Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Marjan Bahraminasab
- Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran
- Department of Tissue Engineering and Applied Cell Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
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Minaychev VV, Teterina AY, Smirnova PV, Menshikh KA, Senotov AS, Kobyakova MI, Smirnov IV, Pyatina KV, Krasnov KS, Fadeev RS, Komlev VS, Fadeeva IS. Composite Remineralization of Bone-Collagen Matrices by Low-Temperature Ceramics and Serum Albumin: A New Approach to the Creation of Highly Effective Osteoplastic Materials. J Funct Biomater 2024; 15:27. [PMID: 38391880 PMCID: PMC10889756 DOI: 10.3390/jfb15020027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 02/24/2024] Open
Abstract
This study examined the effectiveness of coating demineralized bone matrix (DBM) with amorphous calcium phosphate (DBM + CaP), as well as a composite of DBM, calcium phosphate, and serum albumin (DBM + CaP + BSA). The intact structure of DBM promotes the transformation of amorphous calcium phosphate (CaP) into dicalcium phosphate dihydrate (DCPD) with a characteristic plate shape and particle size of 5-35 µm. The inclusion of BSA in the coating resulted in a better and more uniform distribution of CaP on the surface of DBM trabeculae. MG63 cells showed that both the obtained forms of CaP and its complex with BSA did not exhibit cytotoxicity up to a concentration of 10 mg/mL in vitro. Ectopic (subcutaneous) implantation in rats revealed pronounced biocompatibility, as well as strong osteoconductive, osteoinductive, and osteogenic effects for both DBM + CaP and DBM + CaP + BSA, but more pronounced effects for DBM + CaP + BSA. In addition, for the DBM + CaP + BSA samples, there was a pronounced full physiological intrafibrillar biomineralization and proangiogenic effect with the formation of bone-morrow-like niches, accompanied by pronounced processes of intramedullary hematopoiesis, indicating a powerful osteogenic effect of this composite.
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Affiliation(s)
- Vladislav V Minaychev
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskiy Prospect 49, 119334 Moscow, Russia
| | - Anastasia Yu Teterina
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskiy Prospect 49, 119334 Moscow, Russia
| | - Polina V Smirnova
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskiy Prospect 49, 119334 Moscow, Russia
| | - Ksenia A Menshikh
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia
- Center for Translational Research on Autoimmune and Allergic Disease-CAAD, Department of Health Sciences, Università del Piemonte Orientale, 28100 Novara, Italy
| | - Anatoliy S Senotov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia
| | - Margarita I Kobyakova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia
- Research Institute of Clinical and Experimental Lymphology-Branch of the Institute of Cytology and Genetics Siberian Branch of Russian Academy of Sciences, 630060 Novosibirsk, Russia
| | - Igor V Smirnov
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskiy Prospect 49, 119334 Moscow, Russia
| | - Kira V Pyatina
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia
| | - Kirill S Krasnov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia
| | - Roman S Fadeev
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia
| | - Vladimir S Komlev
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskiy Prospect 49, 119334 Moscow, Russia
| | - Irina S Fadeeva
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskiy Prospect 49, 119334 Moscow, Russia
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3
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Saurav S, Sharma P, Kumar A, Tabassum Z, Girdhar M, Mamidi N, Mohan A. Harnessing Natural Polymers for Nano-Scaffolds in Bone Tissue Engineering: A Comprehensive Overview of Bone Disease Treatment. Curr Issues Mol Biol 2024; 46:585-611. [PMID: 38248340 PMCID: PMC10814241 DOI: 10.3390/cimb46010038] [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: 11/26/2023] [Revised: 12/24/2023] [Accepted: 12/30/2023] [Indexed: 01/23/2024] Open
Abstract
Numerous surgeries are carried out to replace tissues that have been harmed by an illness or an accident. Due to various surgical interventions and the requirement of bone substitutes, the emerging field of bone tissue engineering attempts to repair damaged tissues with the help of scaffolds. These scaffolds act as template for bone regeneration by controlling the development of new cells. For the creation of functional tissues and organs, there are three elements of bone tissue engineering that play very crucial role: cells, signals and scaffolds. For the achievement of these aims, various types of natural polymers, like chitosan, chitin, cellulose, albumin and silk fibroin, have been used for the preparation of scaffolds. Scaffolds produced from natural polymers have many advantages: they are less immunogenic as well as being biodegradable, biocompatible, non-toxic and cost effective. The hierarchal structure of bone, from microscale to nanoscale, is mostly made up of organic and inorganic components like nanohydroxyapatite and collagen components. This review paper summarizes the knowledge and updates the information about the use of natural polymers for the preparation of scaffolds, with their application in recent research trends and development in the area of bone tissue engineering (BTE). The article extensively explores the related research to analyze the advancement of nanotechnology for the treatment of bone-related diseases and bone repair.
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Affiliation(s)
- Sushmita Saurav
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara 144401, Punjab, India; (S.S.); (P.S.); (Z.T.)
| | - Prashish Sharma
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara 144401, Punjab, India; (S.S.); (P.S.); (Z.T.)
| | - Anil Kumar
- Gene Regulation Laboratory, National Institute of Immunology, New Delhi 110067, Delhi, India;
| | - Zeba Tabassum
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara 144401, Punjab, India; (S.S.); (P.S.); (Z.T.)
| | - Madhuri Girdhar
- Division of Research and Development, Lovely Professional University, Phagwara 144401, Punjab, India;
| | - Narsimha Mamidi
- Wisconsin Centre for Nano Biosystems, School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Anand Mohan
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara 144401, Punjab, India; (S.S.); (P.S.); (Z.T.)
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4
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Xu X, Hu J, Xue H, Hu Y, Liu YN, Lin G, Liu L, Xu RA. Applications of human and bovine serum albumins in biomedical engineering: A review. Int J Biol Macromol 2023; 253:126914. [PMID: 37716666 DOI: 10.1016/j.ijbiomac.2023.126914] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 09/12/2023] [Accepted: 09/13/2023] [Indexed: 09/18/2023]
Abstract
Serum albumin, commonly recognized as a predominant major plasma protein, is ubiquitously distributed among vertebrates, demonstrating versatility and widespread accessibility. Numerous studies have discussed the composition and attributes of human and bovine serum albumin; nonetheless, few systematic and comprehensive summaries on human and bovine serum albumin exist. This paper reviews the applications of human and bovine serum albumin in biomedical engineering. First, we introduce the differences in the structure of human and bovine serum albumin. Next, we describe the extraction methods for human and bovine serum albumin (fractionation process separation, magnetic adsorption, reverse micellar (RM) extraction, and genetic engineering) and the advantages and disadvantages of recently developed extraction methods. The characteristics of different processing forms of human and bovine serum albumin are also discussed, concomitantly elucidating their intrinsic properties, functions, and applications in biomedicine. Notably, their pivotal functions as carriers for drugs and tissue-engineered scaffolds, as well as their contributions to cell reproduction and bioimaging, are critically examined. Finally, to provide guidance for researchers in their future work, this review summarizes the current state of human and bovine serum albumin research and outlines potential future research topics.
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Affiliation(s)
- Xinhao Xu
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China; The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China
| | - Jinyu Hu
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Huaqian Xue
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China; School of Pharmacy, Ningxia Medical University, Ningxia 750004, China
| | - Yingying Hu
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Ya-Nan Liu
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Guanyang Lin
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Liangle Liu
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China.
| | - Ren-Ai Xu
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China.
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Yao ZY, Fan SY, Song ZF, Li ZC. Network pharmacology-based and molecular docking-based analysis of You-Gui-Yin for the treatment of osteonecrosis of the femoral head. Medicine (Baltimore) 2023; 102:e35581. [PMID: 37904445 PMCID: PMC10615424 DOI: 10.1097/md.0000000000035581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 09/19/2023] [Indexed: 11/01/2023] Open
Abstract
You-Gui-Yin (YGY) is a classic prescription for warming up kidney-Yang and filling in kidney essence in traditional Chinese medicine, and has been used to treat osteonecrosis of the femoral head (ONFH) effectively. However, the underlying mechanisms are still unknown. This study is aimed at exploring the possible mechanisms of action of the YGY in the treatment of ONFH based on network pharmacology and molecular docking. TCMSP was used to screen the active components and targets of YGY. The disease targets of ONFH were collected in several public databases. The protein-protein interaction (PPI) Network was constructed using the STRING platform. The Metascape database platform was used for Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses. The key active components and core target proteins of YGY in the treatment of ONFH were verified by the molecular docking. 120 active components were obtained from YGY, among which 73 components were hit by the 117 drug-disease intersection targets. Key effective components included quercetin, kaempferol, beta-sitosterol, glycitein, beta-carotene, and so on. Core target proteins included ALB, AKT1, TNF, IL6, TP53, and so on. According to GO and KEGG analyses, there were 1762 biological processes, 94 cellular component, 138 molecular function and 187 signaling pathways involved. we selected the top 20 biological processes (BP), cellular components (CC), molecular functions (MF) and signaling pathways to draw the heat maps, showing that Lipid and atherosclerosis signaling pathway, IL-17 signaling pathway, HIF-1 signaling pathway, relaxin signaling pathway and MAPK signaling pathway and other pathways may play a key role in the treatment of ONFH by YGY. The results of molecular docking showed that key effective components and corresponding core target proteins exhibited the good binding activity. YGY can treat ONFH through multicomponents, multitargets, and multipathways, which provides a reference for the subsequent research, development of targeted drugs and clinical application.
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Affiliation(s)
- Zhi-Yuan Yao
- Department of Orthopedics, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), Hangzhou Economic and Technological Development Zone, Hangzhou, Zhejiang, China
| | - Shu-Yao Fan
- Department of Breast Surgery, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), Hangzhou Economic and Technological Development Zone, Hangzhou, Zhejiang, China
| | - Zhou-Feng Song
- Department of Orthopedics, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), Hangzhou Economic and Technological Development Zone, Hangzhou, Zhejiang, China
| | - Zhan-Chun Li
- Department of Orthopedics, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), Hangzhou Economic and Technological Development Zone, Hangzhou, Zhejiang, China
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6
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Junka R, Zhou X, Wang W, Yu X. Albumin-Coated Polycaprolactone (PCL)-Decellularized Extracellular Matrix (dECM) Scaffold for Bone Regeneration. ACS APPLIED BIO MATERIALS 2022; 5:5634-5644. [PMID: 36374246 DOI: 10.1021/acsabm.2c00686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
With the emphasis on collagen and hydroxyapatite, the main structural components of bone tissue, synthetic grafts fall short of matching the clinical efficacy of autologous bone grafts. Excluded non-collagenous protein (NCPs) and carbohydrates also participate in critical cell signaling cascades and guide mineral deposition during intermediate stages of bone healing. By mimicking the native fracture repair process, polymeric scaffolds that incorporate calcium-binding moieties present in fibrocartilage can potentially enhance their bioactivity, mineralization, and bone growth. Likewise, coating polymeric fibers with serum albumin is an additional strategy that can impart collagen-like biofunctionality and further increase mineral deposition on the fibrous surface. Here, a combination of electrospun polycaprolactone (PCL) fibers with chondrocyte-derived decellularized extracellular matrix (dECM) and albumin coating were investigated as a fibrocartilage-mimetic scaffold that can serve as a woven bone precursor for bone regeneration. PCL fibrous constructs coated with dECM and albumin are shown to synergistically increase calcium concentration and calcium phosphate (CaP) deposition in a simulated body fluid biomineralization assay. Albumin/dECM coating increased osteoblast proliferation and mineral deposition in culture. In contrast, CaP coating transformed osteoblast bone lining morphology into cuboidal phenotype and arrested their proliferation. Cell sheets of osteoblasts cultured on dECM/albumin/CaP-coated constructs exhibited an increase in calcium deposition and secretion of collagen, osteopontin, osteocalcin, and bone morphogenetic protein. These results highlight the potential of biomolecular coatings to enhance bone-mimetic properties of synthetic nanofibrous scaffolds, stimulate critical protein and mineral deposition, and augment the bone's capacity to heal. Thus, mimicking the intermediate stages of bone regeneration by incorporating calcium-binding moieties may prove to be a useful strategy for improving the clinical outcomes of synthetic bone grafts.
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Affiliation(s)
- Radoslaw Junka
- Department of Biomedical Engineering, Charles V. Schaefer School of Engineering and Sciences, Stevens Institute of Technology, Hoboken, New Jersey07030, United States
| | - Xiaqing Zhou
- Department of Biomedical Engineering, Charles V. Schaefer School of Engineering and Sciences, Stevens Institute of Technology, Hoboken, New Jersey07030, United States
| | - Weiwei Wang
- Department of Biomedical Engineering, Charles V. Schaefer School of Engineering and Sciences, Stevens Institute of Technology, Hoboken, New Jersey07030, United States
| | - Xiaojun Yu
- Department of Biomedical Engineering, Charles V. Schaefer School of Engineering and Sciences, Stevens Institute of Technology, Hoboken, New Jersey07030, United States
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Haag SL, Martinez-Alvarez J, Schiele NR, Bernards MT. Delivery of Bioactive Albumin from Multi-Functional Polyampholyte Hydrogels. J Appl Polym Sci 2022; 139:e52846. [PMID: 36404914 PMCID: PMC9673991 DOI: 10.1002/app.52846] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 06/02/2022] [Indexed: 12/27/2022]
Abstract
Tissue engineered scaffolds are currently being explored to aid in healing and regeneration of non-union fractures in bone. Additionally, albumin has been demonstrated to provide benefits to healing when applied to injury sites. This paper focuses on delivery of calcium modified, bioactive bovine serum albumin (BSA) from a multi-functional polyampholyte polymer scaffold. First, the inherent nonfouling and conjugation properties of the polyampholyte hydrogel were verified to determine the impact of calcium exposure. The polyampholyte hydrogel delivery platform was then assessed with calcium titrations and osteoblast-like cell (MC3T3-E1) adhesion, proliferation, and viability evaluations. Finally, integrin inhibitors were used to identify the binding mechanisms that mediate cell adhesion to the calcium-modified BSA-conjugated hydrogels. An increase in cell adhesion was observed following calcium exposure up to 0.075 M, although this and higher calcium concentrations affected hydrogel stability and cell growth. BSA exposed to 0.05 M calcium and delivered from polyampholyte hydrogels promoted the most promising viable cell adhesion over 7 days. Cell adhesion to the calcium-modified BSA-conjugated hydrogels appeared to be regulated by arginine-glycine-aspartic acid (RGD) and collagen specific integrins. These results demonstrate that the delivery of calcium modified BSA from an implantable polymer scaffold is promising for bone tissue engineering applications.
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Affiliation(s)
- Stephanie L. Haag
- Department of Chemical & Biological Engineering, University of Idaho, Moscow, ID 83844
| | | | - Nathan R. Schiele
- Department of Chemical & Biological Engineering, University of Idaho, Moscow, ID 83844
| | - Matthew T. Bernards
- Department of Chemical & Biological Engineering, University of Idaho, Moscow, ID 83844
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Kuten Pella O, Hornyák I, Horváthy D, Fodor E, Nehrer S, Lacza Z. Albumin as a Biomaterial and Therapeutic Agent in Regenerative Medicine. Int J Mol Sci 2022; 23:10557. [PMID: 36142472 PMCID: PMC9502107 DOI: 10.3390/ijms231810557] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 08/31/2022] [Accepted: 09/06/2022] [Indexed: 02/07/2023] Open
Abstract
Albumin is a constitutional plasma protein, with well-known biological functions, e.g., a nutrient for stem cells in culture. However, albumin is underutilized as a biomaterial in regenerative medicine. This review summarizes the advanced therapeutic uses of albumin, focusing on novel compositions that take advantage of the excellent regenerative potential of this protein. Albumin coating can be used for enhancing the biocompatibility of various types of implants, such as bone grafts or sutures. Albumin is mainly known as an anti-attachment protein; however, using it on implantable surfaces is just the opposite: it enhances stem cell adhesion and proliferation. The anticoagulant, antimicrobial and anti-inflammatory properties of albumin allow fine-tuning of the biological reaction to implantable tissue-engineering constructs. Another potential use is combining albumin with natural or synthetic materials that results in novel composites suitable for cardiac, neural, hard and soft tissue engineering. Recent advances in materials have made it possible to electrospin the globular albumin protein, opening up new possibilities for albumin-based scaffolds for cell therapy. Several described technologies have already entered the clinical phase, making good use of the excellent biological, but also regulatory, manufacturing and clinical features of serum albumin.
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Affiliation(s)
| | - István Hornyák
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary
| | - Dénes Horváthy
- Department of Interventional Radiology, Semmelweis University, 1122 Budapest, Hungary
| | - Eszter Fodor
- Institute for Sports and Health Sciences, Hungarian University of Sports Science, 1123 Budapest, Hungary
| | - Stefan Nehrer
- Center for Regenerative Medicine, Danube University Krems, 3500 Krems an der Donau, Austria
| | - Zsombor Lacza
- Orthosera GmbH, 3500 Krems an der Donau, Austria
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary
- Institute for Sports and Health Sciences, Hungarian University of Sports Science, 1123 Budapest, Hungary
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Albumin-to-Alkaline Phosphatase Ratio as a Prognostic Biomarker for Spinal Fusion in Lumbar Degenerative Diseases Patients Undergoing Lumbar Spinal Fusion. J Clin Med 2022; 11:jcm11164719. [PMID: 36012961 PMCID: PMC9409976 DOI: 10.3390/jcm11164719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/09/2022] [Accepted: 08/10/2022] [Indexed: 11/17/2022] Open
Abstract
Objective: To determine if preoperative albumin-alkaline phosphatase ratio (AAPR) is predictive of clinical outcomes in patients with degenerative lumbar diseases undergoing lumbar fusion. Method: 326 patients undergoing posterior lumbar decompression and fusion were retrospectively analyzed. The cumulative grade was calculated by summing the Pfirrmann grades of all lumbar discs. Grouping was based on the 50th percentile of cumulative grade. The relationship between AAPR, intervertebral disc degeneration (IDD) severity, and fusion rate was explored using correlation analyses and logistic regression models. Meanwhile, the ROC curve evaluated the discrimination ability of AAPR in predicting severe degeneration and non-fusion. Results: High AAPR levels were significantly negatively correlated with severe degeneration and non-fusion rate. A multivariate binary logistic analysis revealed that high preoperative AAPR was an independent predictor of severe degeneration and postoperative non-fusion (OR: 0.114; 95% CI: 0.027−0.482; p = 0.003; OR: 0.003; 95% CI: 0.0003−0.022; p < 0.001). The models showed excellent discrimination and calibration. The areas under the curve (AUC) of severe degeneration and non-fusion identified by AAPR were 0.635 and 0.643. Conclusion: The AAPR can help predict the severity of disc degeneration and the likelihood of non-fusion.
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Radhakrishnan J, Muthuraj M, Gandham GSPD, Sethuraman S, Subramanian A. Nanohydroxyapatite-Protein Interface in Composite Sintered Scaffold Influences Bone Regeneration in Rabbit Ulnar Segmental Defect. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2022; 33:36. [PMID: 35397053 PMCID: PMC8994720 DOI: 10.1007/s10856-022-06657-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 03/09/2022] [Indexed: 06/14/2023]
Abstract
The healing physiology of bone repair and remodeling that occurs after normal fracture is well orchestrated. However, it fails in complex clinical conditions and hence requires augmentation by grafts. In this study, composite nanohydroxyapatite (nHA), poly(hydroxybutyrate) (PHB) and poly(ɛ-caprolactone) (PCL) constituted microspheres sintered three-dimensional scaffold were evaluated in rabbit ulnar segmental defect. A composite scaffold using PHB-PCL-nHA microspheres was developed with protein interface by solvent/non-solvent sintering to provide multiple cues such as biocomposition, cancellous bone equivalent meso-micro multi-scale porosity, and compressive strength. In vitro DNA quantification and alkaline phosphatase (ALP) assays revealed that the protein interfaced composite scaffolds supported osteoblast proliferation and mineralization significantly higher than scaffolds without protein and TCPS (p < 0.05). Scanning electron micrographs of osteoblasts cultured scaffolds demonstrated cell-matrix interaction, cell spreading, colonization and filopodial extension across the porous voids. Cylindrical scaffolds (5 × 10 mm) were implanted following segmental defect (10 mm) in rabbit ulnar bone and compared with untreated control. Radiography (4, 8 and 12 weeks) and µ-computed tomography (12 weeks) analysis showed directional bone tissue formation by bridging defective site in both scaffolds with and without protein interface. Whereas, undesired sclerotic-like tissue formation was observed in control groups from 8 weeks. Histology by hot Stevenel's blue and van Gieson's picrofuchsin staining has confirmed enhanced bone maturation in scaffold groups while presence of osteoids was observed in control after 12 weeks. Thus, the developed composite matrices exhibits osteoinductive, osteoconductive properties and demonstrates its bone regenerative potential owing to its compositional, micro & macro structural and mechanical properties. Graphical abstract.
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Affiliation(s)
- Janani Radhakrishnan
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Center for Nanotechnology & Advanced Biomaterials, ABCDE Innovative Centre, School of Chemical & Biotechnology, SASTRA Deemed University, Thanjavur, 613 401, India
| | - Manjula Muthuraj
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Center for Nanotechnology & Advanced Biomaterials, ABCDE Innovative Centre, School of Chemical & Biotechnology, SASTRA Deemed University, Thanjavur, 613 401, India
| | - Gnana Santi Phani Deepika Gandham
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Center for Nanotechnology & Advanced Biomaterials, ABCDE Innovative Centre, School of Chemical & Biotechnology, SASTRA Deemed University, Thanjavur, 613 401, India
| | - Swaminathan Sethuraman
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Center for Nanotechnology & Advanced Biomaterials, ABCDE Innovative Centre, School of Chemical & Biotechnology, SASTRA Deemed University, Thanjavur, 613 401, India
| | - Anuradha Subramanian
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Center for Nanotechnology & Advanced Biomaterials, ABCDE Innovative Centre, School of Chemical & Biotechnology, SASTRA Deemed University, Thanjavur, 613 401, India.
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11
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Delkash Y, Gouin M, Rimbeault T, Mohabatpour F, Papagerakis P, Maw S, Chen X. Bioprinting and In Vitro Characterization of an Eggwhite-Based Cell-Laden Patch for Endothelialized Tissue Engineering Applications. J Funct Biomater 2021; 12:jfb12030045. [PMID: 34449625 PMCID: PMC8395907 DOI: 10.3390/jfb12030045] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 08/01/2021] [Accepted: 08/08/2021] [Indexed: 12/12/2022] Open
Abstract
Three-dimensional (3D) bioprinting is an emerging fabrication technique to create 3D constructs with living cells. Notably, bioprinting bioinks are limited due to the mechanical weakness of natural biomaterials and the low bioactivity of synthetic peers. This paper presents the development of a natural bioink from chicken eggwhite and sodium alginate for bioprinting cell-laden patches to be used in endothelialized tissue engineering applications. Eggwhite was utilized for enhanced biological properties, while sodium alginate was used to improve bioink printability. The rheological properties of bioinks with varying amounts of sodium alginate were examined with the results illustrating that 2.0-3.0% (w/v) sodium alginate was suitable for printing patch constructs. The printed patches were then characterized mechanically and biologically, and the results showed that the printed patches exhibited elastic moduli close to that of natural heart tissue (20-27 kPa) and more than 94% of the vascular endothelial cells survived in the examination period of one week post 3D bioprinting. Our research also illustrated the printed patches appropriate water uptake ability (>1800%).
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Affiliation(s)
- Yasaman Delkash
- Division of Biomedical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada; (M.G.); (T.R.); (F.M.); (P.P.)
- Correspondence: (Y.D.); (X.C.)
| | - Maxence Gouin
- Division of Biomedical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada; (M.G.); (T.R.); (F.M.); (P.P.)
- School of Engineering, Icam Site de Paris-Sénart, 34 Points de Vue, 77127 Lieusaint, France
| | - Tanguy Rimbeault
- Division of Biomedical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada; (M.G.); (T.R.); (F.M.); (P.P.)
- School of Engineering, Icam Site de Vendée, 28 Boulevard d’Angleterre, 85000 La Roche-sur-Yon, France
| | - Fatemeh Mohabatpour
- Division of Biomedical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada; (M.G.); (T.R.); (F.M.); (P.P.)
- College of Dentistry, University of Saskatchewan, 105 Wiggins Road, Saskatoon, SK S7N 5E4, Canada
| | - Petros Papagerakis
- Division of Biomedical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada; (M.G.); (T.R.); (F.M.); (P.P.)
- College of Dentistry, University of Saskatchewan, 105 Wiggins Road, Saskatoon, SK S7N 5E4, Canada
| | - Sean Maw
- Graham School of Professional Development, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada;
| | - Xiongbiao Chen
- Division of Biomedical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada; (M.G.); (T.R.); (F.M.); (P.P.)
- Correspondence: (Y.D.); (X.C.)
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12
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Cometta S, Bock N, Suresh S, Dargaville TR, Hutmacher DW. Antibacterial Albumin-Tannic Acid Coatings for Scaffold-Guided Breast Reconstruction. Front Bioeng Biotechnol 2021; 9:638577. [PMID: 33869154 PMCID: PMC8044405 DOI: 10.3389/fbioe.2021.638577] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 03/08/2021] [Indexed: 12/15/2022] Open
Abstract
Infection is the major cause of morbidity after breast implant surgery. Biodegradable medical-grade polycaprolactone (mPCL) scaffolds designed and rooted in evidence-based research offer a promising alternative to overcome the limitations of routinely used silicone implants for breast reconstruction. Nevertheless, as with any implant, biodegradable scaffolds are susceptible to bacterial infection too, especially as bacteria can rapidly colonize the biomaterial surface and form biofilms. Biofilm-related infections are notoriously challenging to treat and can lead to chronic infection and persisting inflammation of surrounding tissue. To date, no clinical solution that allows to efficiently prevent bacterial infection while promoting correct implant integration, has been developed. In this study, we demonstrated for the first time, to our knowledge that the physical immobilization of 1 and 5% human serum albumin (HSA) onto the surface of 3D printed macro- and microporous mPCL scaffolds, resulted in a reduction of Staphylococcus aureus colonization by 71.7 ± 13.6% and 54.3 ± 12.8%, respectively. Notably, when treatment of scaffolds with HSA was followed by tannic acid (TA) crosslinking/stabilization, uniform and stable coatings with improved antibacterial activity were obtained. The HSA/TA-coated scaffolds were shown to be stable when incubated at physiological conditions in cell culture media for 7 days. Moreover, they were capable of inhibiting the growth of S. aureus and Pseudomonas aeruginosa, two most commonly found bacteria in breast implant infections. Most importantly, 1%HSA/10%TA- and 5%HSA/1%TA-coated scaffolds were able to reduce S. aureus colonization on the mPCL surface, by 99.8 ± 0.1% and 98.8 ± 0.6%, respectively, in comparison to the non-coated control specimens. This system offers a new biomaterial strategy to effectively translate the prevention of biofilm-related infections on implant surfaces without relying on the use of prophylactic antibiotic treatment.
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Affiliation(s)
- Silvia Cometta
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia.,School of Mechanical, Medical and Process Engineering, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD, Australia
| | - Nathalie Bock
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia.,Translational Research Institute, Brisbane, QLD, Australia.,School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, Brisbane, QLD, Australia
| | - Sinduja Suresh
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia.,School of Mechanical, Medical and Process Engineering, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD, Australia.,ARC Industrial Transformation Training Centre for Multiscale 3D Imaging, Modelling and Manufacturing, Queensland University of Technology, Brisbane, QLD, Australia
| | - Tim R Dargaville
- School of Chemistry and Physics, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD, Australia
| | - Dietmar W Hutmacher
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia.,School of Mechanical, Medical and Process Engineering, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD, Australia.,ARC Industrial Transformation Training Centre in Additive Biomanufacturing, Queensland University of Technology, Brisbane, QLD, Australia
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13
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Haag SL, Schiele NR, Bernards MT. Enhancement and mechanisms of MC3T3-E1 osteoblast-like cell adhesion to albumin through calcium exposure. Biotechnol Appl Biochem 2021; 69:492-502. [PMID: 33586804 DOI: 10.1002/bab.2126] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 02/09/2021] [Indexed: 01/06/2023]
Abstract
Serum albumin is the most prominent protein in blood, and it aids in bone fracture healing, though the manner through which enhanced healing occurs is not well understood. This study investigates the influence of calcium on the bioactivity of albumin due to the prevalence of calcium at bone injury sites. Bovine serum albumin (BSA) was exposed to varying concentrations of calcium, adsorbed to tissue culture polystyrene, and the subsequent BSA-coated surfaces were evaluated with calcium titration, and cell adhesion, viability, and binding inhibition studies. Calcium-modified BSA improved overall MC3T3-E1 osteoblast-like cell adhesion, although high calcium concentrations induced cell death. Inhibiting specific integrins revealed that without calcium exposure, cell binding to BSA was primarily mediated by integrins that typically bind to the GFOGER sequence of collagen. As calcium exposure increases, the primary binding interaction transitioned to integrins known to bind RGD. However, cell binding to calcium-modified BSA was not completely eliminated during the inhibition studies indicating additional unidentified binding interactions occur. Overall, these results suggest that the exposure to calcium induces conformational changes that affect the cell-binding bioactivity of BSA, which may explain the beneficial impact of albumin in bone tissue.
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Affiliation(s)
- Stephanie L Haag
- Department of Chemical & Biological Engineering, University of Idaho, Moscow, ID, USA
| | - Nathan R Schiele
- Department of Chemical & Biological Engineering, University of Idaho, Moscow, ID, USA
| | - Matthew T Bernards
- Department of Chemical & Biological Engineering, University of Idaho, Moscow, ID, USA
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14
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Singh S, Dutt D, Mishra NC. Cotton pulp for bone tissue engineering. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 31:2094-2113. [DOI: 10.1080/09205063.2020.1793872] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sandhya Singh
- Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee, India
| | - Dharm Dutt
- Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee, India
| | - Narayan Chand Mishra
- Polymer & Process Department, Indian Institute of Technology Roorkee, Roorkee, India
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15
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Gheno E, Mourão CFDAB, Mello-Machado RCD, Stellet Lourenço E, Miron RJ, Catarino KFF, Alves AT, Alves GG, Calasans-Maia MD. In vivo evaluation of the biocompatibility and biodegradation of a new denatured plasma membrane combined with liquid PRF (Alb-PRF). Platelets 2020; 32:542-554. [PMID: 32531175 DOI: 10.1080/09537104.2020.1775188] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Guided bone regeneration (GBR) is a process that involves the regeneration of bone defects through the application of occlusive membranes that mechanically exclude the population of non-osteogenic cells from the surrounding soft tissue. Interestingly, platelet-rich fibrin (PRF) has previously been proposed as an autologous GBR membrane despite its short-term resorption period of 2-3 weeks. Recent clinical observations have demonstrated that, by heating a liquid platelet-poor plasma (PPP) layer and mixing the cell-rich buffy coat zone, the resorption properties of heated albumin gel with liquid-PRF (Alb-PRF) can be significantly improved. The aim of this study was to evaluate the inflammatory reaction, biocompatibility, and extended degradation properties of a new autologous Alb-PRF membrane in comparison to commonly utilized standard PRF after nude mice implantation, according to ISO 10993-6/2016. Two standard preparations of PRF (L-PRF and H-PRF) were compared to novel Alb-PRF following subcutaneous implantation at 7, 14, and 21 days. All groups demonstrated excellent biocompatibility owing to their autologous sources. However, it is worth noting that, while both L-PRF and H-PRF membranes demonstrated significant or complete resorption by 21 days, the Alb-PRF membrane remained volume-stable throughout the duration of the study. This study demonstrates-for the first time, to the best of our knowledge-a marked improvement in the membrane stability of Alb-PRF. This indicates its future potential for use as a biological barrier membrane for GBR procedures with a long-lasting half-life, or as a biological filler material in esthetic medicine applications. Thus, further studies are warranted to explore future clinical applications in various fields of medicine.
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Affiliation(s)
- Ezio Gheno
- Post-Graduation Program in Dentistry, Fluminense Federal University, Niterói, Brazil.,Di.S.C Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Italy
| | | | | | | | - Richard J Miron
- Department of Periodontology, University of Bern, Bern, Switzerland
| | | | - Adriana Terezinha Alves
- Department of Oral Pathology, Dentistry School, Fluminense Federal University, Niterói, Brazil
| | - Gutemberg Gomes Alves
- Department of Molecular and Cell Biology, Institute of Biology, Fluminense Federal University, Niterói, Brazil
| | - Mônica D Calasans-Maia
- Oral Surgery Department, Dentistry School, Fluminense Federal University, Niterói, Brazil
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16
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Mijiritsky E, Gardin C, Ferroni L, Lacza Z, Zavan B. Albumin-impregnated bone granules modulate the interactions between mesenchymal stem cells and monocytes under in vitro inflammatory conditions. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110678. [PMID: 32204105 DOI: 10.1016/j.msec.2020.110678] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 12/22/2019] [Accepted: 01/18/2020] [Indexed: 12/17/2022]
Abstract
Bone regeneration around newly implanted biomaterials is a complex process, which in its early phases involves the interactions between Mesenchymal Stem Cells (MSCs) and immune cells. The response of these cells to the biomaterial depends both on the local microenvironment and on the characteristics of the inserted bone substitute. In this work, bone allografts impregnated with albumin are loaded with a co-culture of human MSCs and monocytes; bone granules without albumin are used for comparison. Co-cultures are contextually treated with pro-inflammatory cytokines to simulate the inflammatory milieu naturally present during the bone regeneration process. As revealed by microscopic images, albumin-impregnated bone granules promote adhesion and interactions between cells populations. Compared to control granules, albumin coating diminishes reactive species production by cells. This reduced oxidative stress may be attributable to antioxidant properties of albumin, and it is also reflected in the mitigated gene expression of mitochondrial electron transport chain complexes, where most intracellular reactive molecules are generated. MSCs-monocytes co-cultured onto albumin-impregnated bone granules additionally release higher amounts of immunomodulatory cytokines and growth factors. In summary, this work demonstrates that impregnation of bone granules with albumin positively modulates the interactions between MSCs and immune cells, consequently influencing their mutual activities and immunomodulatory functions.
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Affiliation(s)
- Eitan Mijiritsky
- Department of Otolaryngology, Head and Neck and Maxillofacial Surgery, Sackler Faculty of Medicine, Tel-Aviv Sourasky Medical Center, 64239 Tel Aviv, Israel
| | - Chiara Gardin
- Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; Maria Cecilia Hospital, GVM Care & Research, 48033 Cotignola, Italy.
| | - Letizia Ferroni
- Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; Maria Cecilia Hospital, GVM Care & Research, 48033 Cotignola, Italy
| | - Zsombor Lacza
- Institute of Clinical Experimental Research, Semmelweis University, 1094 Budapest, Hungary
| | - Barbara Zavan
- Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; Maria Cecilia Hospital, GVM Care & Research, 48033 Cotignola, Italy.
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17
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Horváthy DB, Schandl K, Schwarz CM, Renner K, Hornyák I, Szabó BT, Niculescu-Morzsa E, Nehrer S, Dobó-Nagy C, Doros A, Lacza Z. Serum albumin-coated bone allograft (BoneAlbumin) results in faster bone formation and mechanically stronger bone in aging rats. J Tissue Eng Regen Med 2019; 13:416-422. [PMID: 30747474 PMCID: PMC6593663 DOI: 10.1002/term.2803] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 11/05/2018] [Accepted: 01/09/2019] [Indexed: 12/12/2022]
Abstract
Serum albumin-coated bone allografts (BoneAlbumin) have successfully supported bone regeneration in various experimental models by activating endogenous progenitors. However, the effect of tissue aging, linked to declining stem cell function, has yet to be explicitly examined within the context of BoneAlbumin's regenerative capacity. Stem cell function was tested with an in vitro attachment assay, which showed that albumin coating increases stem cell attachment on demineralized bone surfaces in an aging cell population. Bone regeneration was investigated in vivo by creating critical size bone defects on the parietal bones of aging female rats. Demineralized bone matrices with and without serum albumin coating were used to fill the defects. Bone regeneration was determined by measuring the density and the size of the remaining bone defect with computed tomography (CT). Microcomputed tomography (MicroCT) and mechanical testing were performed on the parietal bone explants. In vivo CT and ex vivo microCT measurements showed better regeneration with albumin-coated grafts. Additionally, the albumin-coated group showed a twofold increase in peak fracture force compared with uncoated allografts. In the present study, serum albumin-coated demineralized bone matrices successfully supported faster and functionally superior bone regeneration in aging rats. Because stem cell function, a key contributor of bone remodelling, decreases with age and serum albumin is an effective activator of endogenous progenitor cells, this method could be an effective and safe adjuvant in bone regeneration of aging adult and osteo-compromised populations.
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Affiliation(s)
- Dénes B Horváthy
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary.,Department of Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - Károly Schandl
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Charlotte M Schwarz
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Károly Renner
- Department of Physical Chemistry and Material Science, Budapest University of Technology and Economics, Budapest, Hungary
| | - István Hornyák
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Bence T Szabó
- Department of Oral Diagnostics, Semmelweis University, Budapest, Hungary
| | - Eugenia Niculescu-Morzsa
- Center for Regenerative Medicine and Orthopedics, Department for Health Sciences and Biomedicine, Danube University Krems, Krems an der Donau, Austria
| | - Stefan Nehrer
- Center for Regenerative Medicine and Orthopedics, Department for Health Sciences and Biomedicine, Danube University Krems, Krems an der Donau, Austria
| | - Csaba Dobó-Nagy
- Department of Oral Diagnostics, Semmelweis University, Budapest, Hungary
| | - Attila Doros
- Department of Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - Zsombor Lacza
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary.,Research Center for Sport Physiology, University of Physical Education, Budapest, Hungary
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