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Song Y, Choe G, Kwon SH, Yoo J, Choi J, Kim SY, Jung Y. Dual Growth Factor Delivery Using Photo-Cross-Linkable Gelatin Hydrogels for Effectively Reinforced Regeneration of the Rotator Cuff Tendon. ACS APPLIED BIO MATERIALS 2024; 7:1146-1157. [PMID: 38282578 DOI: 10.1021/acsabm.3c01022] [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] [Indexed: 01/30/2024]
Abstract
Rotator cuff tears are currently treated with drugs (steroids and nonsteroidal anti-inflammatory drugs) and surgery. However, the damaged rotator cuff requires a considerable amount of time to regenerate, and the regenerated tissue cannot restore the same level of function as that before the damage. Although growth factors can accelerate regeneration, they are difficult to be used alone because of the risk of degradation and the difficulties in ensuring their sustained release. Thus, hydrogels such as gelatin are used, together with growth factors. Gelatin is a biocompatible and biodegradable hydrogel derived from collagen; therefore, it closely resembles the components of native tissues and can retain water and release drugs continuously, while also showing easily tunable mechanical properties by simple modifications. Moreover, gelatin is a natural biopolymer that possesses the ability to form hydrogels of varying compositions, thereby facilitating effective cross-linking. Therefore, gelatin can be considered to be suitable for rotator-to-tendon healing. In this study, we designed photo-cross-linkable gelatin hydrogels to enhance spacing and adhesive effects for rotator cuff repair. We mixed a ruthenium complex (Ru(II)bpy32+) and sodium persulfate into gelatin-based hydrogels and exposed them to blue light to induce gelation. Basic fibroblast growth factor and bone morphogenetic protein-12 were encapsulated in the gelatin hydrogel for localized and sustained release into the wound, thereby enhancing the cell proliferation. The effects of these dual growth factor-loaded hydrogels on cell cytotoxicity and tendon regeneration in rotator cuff tear models were evaluated using mechanical and histological assessments. The findings confirmed that the gelatin hydrogel was biocompatible and that treatment with the dual growth factor-loaded hydrogels in in vivo rotator cuff tear models promoted regeneration and functional restoration in comparison with the findings in the nontreated group. Therefore, growth factor-loaded gelatin-based hydrogels may be suitable for the treatment of rotator cuff tears.
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Affiliation(s)
- Yerim Song
- Center for Biomaterials, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
- School of Integrative Engineering, Chung-ang University, Seoul 06974, Republic of Korea
| | - Goeun Choe
- Center for Biomaterials, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Soo Hyun Kwon
- Center for Biomaterials, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Jin Yoo
- Center for Biomaterials, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Jonghoon Choi
- School of Integrative Engineering, Chung-ang University, Seoul 06974, Republic of Korea
| | - Soung-Yon Kim
- Department of Orthopaedic Surgery, Kangwon National University Hospital, Baengnyeong-ro 156, Chuncheon-si, Gangwon-do 24289, Republic of Korea
| | - Youngmee Jung
- Center for Biomaterials, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
- Department of Electrical and Electronic Engineering, YU-KIST Institute, Yonsei University, Seoul 03722, Republic of Korea
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2
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Song W, Ma Z, Wang X, Wang Y, Wu D, Wang C, He D, Kong L, Yu W, Li JJ, Li H, He Y. Macroporous Granular Hydrogels Functionalized with Aligned Architecture and Small Extracellular Vesicles Stimulate Osteoporotic Tendon-To-Bone Healing. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2304090. [PMID: 37867219 DOI: 10.1002/advs.202304090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/25/2023] [Indexed: 10/24/2023]
Abstract
Osteoporotic tendon-to-bone healing (TBH) after rotator cuff repair (RCR) is a significant orthopedic challenge. Considering the aligned architecture of the tendon, inflammatory microenvironment at the injury site, and the need for endogenous cell/tissue infiltration, there is an imminent need for an ideal scaffold to promote TBH that has aligned architecture, ability to modulate inflammation, and macroporous structure. Herein, a novel macroporous hydrogel comprising sodium alginate/hyaluronic acid/small extracellular vesicles from adipose-derived stem cells (sEVs) (MHA-sEVs) with aligned architecture and immunomodulatory ability is fabricated. When implanted subcutaneously, MHA-sEVs significantly improve cell infiltration and tissue integration through its macroporous structure. When applied to the osteoporotic RCR model, MHA-sEVs promote TBH by improving tendon repair through macroporous aligned architecture while enhancing bone regeneration by modulating inflammation. Notably, the biomechanical strength of MHA-sEVs is approximately two times higher than the control group, indicating great potential in reducing postoperative retear rates. Further cell-hydrogel interaction studies reveal that the alignment of microfiber gels in MHA-sEVs induces tenogenic differentiation of tendon-derived stem cells, while sEVs improve mitochondrial dysfunction in M1 macrophages (Mφ) and inhibit Mφ polarization toward M1 via nuclear factor-kappaB (NF-κb) signaling pathway. Taken together, MHA-sEVs provide a promising strategy for future clinical application in promoting osteoporotic TBH.
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Affiliation(s)
- Wei Song
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Zhijie Ma
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Xin Wang
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Yifei Wang
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Di Wu
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Chongyang Wang
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Dan He
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Lingzhi Kong
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Weilin Yu
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Jiao Jiao Li
- School of Biomedical Engineering, Faculty of Engineering and IT, University of Technology Sydney, Sydney, New South Wales, 2007, Australia
| | - Haiyan Li
- Chemical and Environmental Engineering Department, School of Engineering, STEM College, RMIT University, 124 La Trobe St., Melbourne, Victoria, 3000, Australia
| | - Yaohua He
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
- Department of Orthopedic Surgery, Jinshan District Central Hospital affiliated to Shanghai University of Medicine & Health Sciences, Jinshan Branch of Shanghai Sixth People's Hospital, Shanghai, 201500, China
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3
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Karaoglu IC, Kebabci AO, Kizilel S. Optimization of Gelatin Methacryloyl Hydrogel Properties through an Artificial Neural Network Model. ACS APPLIED MATERIALS & INTERFACES 2023; 15:44796-44808. [PMID: 37704030 DOI: 10.1021/acsami.3c12207] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
Gelatin methacryloyl (GelMA) hydrogels are promising materials for tissue engineering applications due to their biocompatibility and tunable properties. However, the time-consuming process of preparing GelMA hydrogels with desirable properties for specific biomedical applications limits their clinical use. Visible-light-induced cross-linking is a well-known method for the preparation of GelMA hydrogels; however, a comprehensive investigation on the influence of critical parameters such as Eosin Y (EY), triethanolamine (TEA), and N-vinyl-2-pyrrolidone (NVP) concentrations on the stiffness and gelation time has yet to be performed. In this study, we systematically investigated the effect of these critical parameters on the stiffness and gelation time of GelMA hydrogels. We developed an artificial neural network (ANN) model with three input variables, EY, TEA, and NVP concentrations, and two output variables, Young's modulus and gelation time, derived from our experimental design. Through the alteration of individual chemical concentrations, [EY] between 0.005 and 0.5 mM and [TEA] and [NVP] between 10 and 1000 mM, we studied the impact of these alterations on the real-time values of stiffness and gelation time. Furthermore, we demonstrated the validity of the ANN model in predicting the properties of GelMA hydrogels. We also studied cell survival to establish nontoxic concentration ranges for each component, enabling safer use of GelMA hydrogels in relevant biomedical applications. Our results showed that the ANN model can accurately predict the properties of GelMA hydrogels, allowing for the synthesis of hydrogels with desirable stiffness for various biomedical applications. In conclusion, our study provides a comprehensive library that characterizes the stiffness and gelation time and demonstrates the potential of the ANN model to predict these properties of GelMA hydrogels depending on the critical parameters. The ANN models developed here can facilitate the optimization of GelMA hydrogels with the most efficient mechanical properties that resemble a native extracellular matrix and better address the need in the in vivo microenvironment. The approach of this study is to bring research about the synthesis of GelMA hydrogels to a new level where the synthesis of these hydrogels can be standardized with minimum cost and effort.
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Affiliation(s)
- Ismail Can Karaoglu
- Chemical and Biological Engineering, Koc University, 34450 Sariyer, Istanbul, Turkey
| | - Aybaran Olca Kebabci
- Chemical and Biological Engineering, Koc University, 34450 Sariyer, Istanbul, Turkey
| | - Seda Kizilel
- Chemical and Biological Engineering, Koc University, 34450 Sariyer, Istanbul, Turkey
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González Díaz EC, Tai M, Monette CEF, Wu JY, Yang F. Spatially patterned 3D model mimics key features of cancer metastasis to bone. Biomaterials 2023; 299:122163. [PMID: 37236137 PMCID: PMC10621670 DOI: 10.1016/j.biomaterials.2023.122163] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 05/01/2023] [Accepted: 05/14/2023] [Indexed: 05/28/2023]
Abstract
Bone is the most common target of metastasis in breast cancer and prostate cancer, leading to significant mortality due to lack of effective treatments. The discovery of novel therapies has been hampered by a lack of physiologically relevant in vitro models that can mimic key clinical features of bone metastases. To fill this critical gap, here we report spatially patterned, tissue engineered 3D models of breast cancer and prostate cancer bone metastasis which mimic bone-specific invasion, cancer aggressiveness, cancer-induced dysregulation of bone remodeling, and in vivo drug response. We demonstrate the potential of integrating such 3D models with single-cell RNA sequencing to identify key signaling drivers of cancer metastasis to bone. Together, these results validate that spatially patterned 3D bone metastasis models mimic key clinical features of bone metastasis and can serve as a novel research tool to elucidate bone metastasis biology and expedite drug discovery.
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Affiliation(s)
- Eva C González Díaz
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA.
| | - Michelle Tai
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
| | - Callan E F Monette
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
| | - Joy Y Wu
- Division of Endocrinology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Fan Yang
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA; Department of Orthopaedic Surgery, Stanford University, Stanford, CA, 94305, USA.
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Shi H, Zhou K, Wang M, Wang N, Song Y, Xiong W, Guo S, Yi Z, Wang Q, Yang S. Integrating physicomechanical and biological strategies for BTE: biomaterials-induced osteogenic differentiation of MSCs. Theranostics 2023; 13:3245-3275. [PMID: 37351163 PMCID: PMC10283054 DOI: 10.7150/thno.84759] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 05/12/2023] [Indexed: 06/24/2023] Open
Abstract
Large bone defects are a major global health concern. Bone tissue engineering (BTE) is the most promising alternative to avoid the drawbacks of autograft and allograft bone. Nevertheless, how to precisely control stem cell osteogenic differentiation has been a long-standing puzzle. Compared with biochemical cues, physicomechanical stimuli have been widely studied for their biosafety and stability. The mechanical properties of various biomaterials (polymers, bioceramics, metal and alloys) become the main source of physicomechanical stimuli. By altering the stiffness, viscoelasticity, and topography of materials, mechanical stimuli with different strengths transmit into precise signals that mediate osteogenic differentiation. In addition, externally mechanical forces also play a critical role in promoting osteogenesis, such as compression stress, tensile stress, fluid shear stress and vibration, etc. When exposed to mechanical forces, mesenchymal stem cells (MSCs) differentiate into osteogenic lineages by sensing mechanical stimuli through mechanical sensors, including integrin and focal adhesions (FAs), cytoskeleton, primary cilium, ions channels, gap junction, and activating osteogenic-related mechanotransduction pathways, such as yes associated proteins (YAP)/TAZ, MAPK, Rho-GTPases, Wnt/β-catenin, TGFβ superfamily, Notch signaling. This review summarizes various biomaterials that transmit mechanical signals, physicomechanical stimuli that directly regulate MSCs differentiation, and the mechanical transduction mechanisms of MSCs. This review provides a deep and broad understanding of mechanical transduction mechanisms and discusses the challenges that remained in clinical translocation as well as the outlook for the future improvements.
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Affiliation(s)
- Huixin Shi
- Department of Plastic Surgery, The First Hospital of China Medical University, Shenyang 110001, China
| | - Kaixuan Zhou
- Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang 110001, China
| | - Mingfeng Wang
- Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang 110001, China
| | - Ning Wang
- Department of Plastic Surgery, The First Hospital of China Medical University, Shenyang 110001, China
| | - Yiping Song
- Department of Plastic Surgery, The First Hospital of China Medical University, Shenyang 110001, China
| | - Wei Xiong
- Department of Plastic Surgery, The First Affiliated Hospital of Medical College of Shihezi University, Shihezi, Xinjiang 832008, China
| | - Shu Guo
- Department of Plastic Surgery, The First Hospital of China Medical University, Shenyang 110001, China
| | - Zhe Yi
- Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang 110001, China
| | - Qiang Wang
- Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang 110001, China
| | - Shude Yang
- Department of Plastic Surgery, The First Hospital of China Medical University, Shenyang 110001, China
- Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang 110001, China
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Su N, Villicana C, Barati D, Freeman P, Luo Y, Yang F. Stem Cell Membrane-Coated Microribbon Scaffolds Induce Regenerative Innate and Adaptive Immune Responses in a Critical-Size Cranial Bone Defect Model. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2208781. [PMID: 36560890 PMCID: PMC10057912 DOI: 10.1002/adma.202208781] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 12/09/2022] [Indexed: 05/31/2023]
Abstract
Naturally-derived cell membranes have shown great promise in functionalizing nanoparticles to enhance biointerfacing functions for drug delivery applications. However, its potential for functionalizing macroporous scaffolds to enhance tissue regeneration in vivo remains unexplored. Engineering scaffolds with immunomodulatory functions represents an exciting strategy for tissue regeneration but is largely limited to soft tissues. Critical-sized bone defects cannot heal on their own, and the role of adaptive immune cells in scaffold-mediated healing of cranial bone defects remains largely unknown. Here, mensenchymal stem cell membrane (MSCM)-coated microribbon (µRB) scaffolds for treating critical size cranial bone defects via targeting immunomodulation are reported. Confocal imaging and proteomic analyses are used to confirm successful coating and characterize the compositions of cell membrane coating. It is demonstrated that MSCM coating promotes macrophage (Mφ) polarization toward regenerative phenotype, induces CD8+ T cell apoptosis, and enhances regulatory T cell differentiation in vitro and in vivo. When combined with a low dosage of BMP-2, MSCM coating further accelerates bone regeneration and suppresses inflammation. These results establish cell membrane-coated microribbon scaffolds as a promising strategy for treating critical size bone defects via immunomodulation. The platform may be broadly used with different cell membranes and scaffolds to enhance regeneration of multiple tissue types.
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Affiliation(s)
- Ni Su
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Cassandra Villicana
- Department of Bioengineering, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Danial Barati
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Peyton Freeman
- Department of Bioengineering, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Ying Luo
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, USA 02155
| | - Fan Yang
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Bioengineering, Stanford University School of Medicine, Stanford, CA, 94305, USA
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7
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Rizwan A, Gulfam M, Jo SH, Seo JW, Ali I, Thang Vu T, Joo SB, Park SH, Taek Lim K. Gelatin-based NIR and reduction-responsive injectable hydrogels cross-linked through IEDDA click chemistry for drug delivery application. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.112019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
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8
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Recent Advances in Macroporous Hydrogels for Cell Behavior and Tissue Engineering. Gels 2022; 8:gels8100606. [PMID: 36286107 PMCID: PMC9601978 DOI: 10.3390/gels8100606] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/07/2022] [Accepted: 09/14/2022] [Indexed: 11/23/2022] Open
Abstract
Hydrogels have been extensively used as scaffolds in tissue engineering for cell adhesion, proliferation, migration, and differentiation because of their high-water content and biocompatibility similarity to the extracellular matrix. However, submicron or nanosized pore networks within hydrogels severely limit cell survival and tissue regeneration. In recent years, the application of macroporous hydrogels in tissue engineering has received considerable attention. The macroporous structure not only facilitates nutrient transportation and metabolite discharge but also provides more space for cell behavior and tissue formation. Several strategies for creating and functionalizing macroporous hydrogels have been reported. This review began with an overview of the advantages and challenges of macroporous hydrogels in the regulation of cellular behavior. In addition, advanced methods for the preparation of macroporous hydrogels to modulate cellular behavior were discussed. Finally, future research in related fields was discussed.
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Conrad B, Yang F. Hydroxyapatite-coated gelatin microribbon scaffolds induce rapid endogenous cranial bone regeneration in vivo. BIOMATERIALS ADVANCES 2022; 140:213050. [PMID: 35917686 DOI: 10.1016/j.bioadv.2022.213050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 06/25/2022] [Accepted: 07/24/2022] [Indexed: 06/15/2023]
Abstract
Hydroxyapatite (HA) has a composition similar to mineral bone and has been used for coating macroporous scaffolds to enhance bone formation. However, previous macroporous scaffolds did not support minimally invasive delivery. Our lab has reported on gelatin-based microribbon (μRB) shaped hydrogels, which combine injectability with macroporosity and support cranial bone formation in an immunocompromised mouse model. However, gelatin alone was not sufficient to support cranial bone formation in immunocompetent animals. To overcome this challenge, here we evaluated two methods to incorporate HA into gelatin μRB scaffolds using either modified simulated body fluid (mSBF) or commercially available HA nanoparticles (HAnp). HA incorporation and distribution were characterized using scanning electron microscopy and energy-dispersive X-ray spectroscopy. While both methods enhanced MSC osteogenesis and mineralization, the mSBF method led to undesirable reduction in mechanical properties. HAnp-coated μRB scaffolds were further evaluated in an immunocompetent mouse cranial defect model. Acellular HAnp-coated gelatin μRB scaffolds induced rapid and robust endogenous cranial bone regeneration as shown by MicroCT imaging and histology. Co-delivery with exogenous MSCs led to later bone resorption accompanied by increased osteoclast activity. In summary, our results demonstrate the promise of gelatin μRBs with HAnps as a promising therapy for cranial bone regeneration without the need for exogenous cells or growth factors.
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Affiliation(s)
- Bogdan Conrad
- Program of Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, 240 Pasteur Dr., Biomedical Innovation Building 1200, Palo Alto, CA 94304, United States of America.
| | - Fan Yang
- Departments of Orthopaedic Surgery and Bioengineering Stanford University, 240 Pasteur Dr., Biomedical Innovation Building 1200, Palo Alto, CA 94304, United States of America.
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Chen M, Liu Q, Xu Y, Wang Y, Han X, Wang Z, Liang J, Sun Y, Fan Y, Zhang X. The effect of LyPRP/collagen composite hydrogel on osteogenic differentiation of rBMSCs. Regen Biomater 2020; 8:rbaa053. [PMID: 33732498 PMCID: PMC7947583 DOI: 10.1093/rb/rbaa053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/22/2020] [Accepted: 11/15/2020] [Indexed: 12/12/2022] Open
Abstract
Although platelet-rich plasma (PRP) plays a significant role in the orthopedic clinical application, it still faces two major problems, namely, uncontrollable factors release, frequent preparation and extraction processes as well as the inconvenient form of usage. To overcome these shortcomings, freeze-dried PRP (LyPRP) was encapsulated into bioactive Col I hydrogel to induce osteogenic differentiation of rabbit bone marrow mesenchymal stem cells (rBMSCs). And PRP/Col І composite hydrogel was prepared as a control. Compared with Col І hydrogel, the introduction of platelets significantly improved the mechanical properties of hydrogels. Meanwhile, platelets were evenly distributed in the composite hydrogels network. The sustainable release of related factors in the composite hydrogels could last for more than 14 days to maintain its long-term biological activity. Further cell experiments confirmed that PRP and LyPRP could effectively alleviate the contraction of collagen hydrogel in vitro, and promote the adhesion, proliferation and osteogenesis differentiation of rBMSCs. The results of osteogenic gene expression indicated that the 10% LyPRP/Col І composite hydrogel could facilitate the early expression of BMP-2 and late osteogenic associated protein formation with higher expression of alkaline phosphatase and Osteocalcin (OCN). These results might provide new insights for the clinical application of 10% LyPRP/Col І composite hydrogel as practical bone repair injection.
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Affiliation(s)
- Manyu Chen
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, P. R. China
| | - Quanying Liu
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, P. R. China
| | - Yang Xu
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, P. R. China
| | - Yuxiang Wang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, P. R. China
| | - Xiaowen Han
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, P. R. China
| | - Zhe Wang
- Department of Medical Genetics, Zunyi Medical University, No. 6 West Xuefu Road, Zunyi, Guizhou 563000, P. R. China
| | - Jie Liang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, P. R. China.,Sichuan Testing Center for Biomaterials and Medical Devices, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Yong Sun
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, P. R. China
| | - Yujiang Fan
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, P. R. China
| | - Xingdong Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, P. R. China
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