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Li J, Wu Y, Yuan Q, Li L, Qin W, Jia J, Chen K, Wu D, Yuan X. Gelatin Microspheres Based on H8-Loaded Macrophage Membrane Vesicles to Promote Wound Healing in Diabetic Mice. ACS Biomater Sci Eng 2024; 10:2251-2269. [PMID: 38450619 DOI: 10.1021/acsbiomaterials.3c01742] [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] [Indexed: 03/08/2024]
Abstract
Diabetic wound healing remains a worldwide challenge for both clinicians and researchers. The high expression of matrix metalloproteinase 9 (MMP9) and a high inflammatory response are indicative of poor diabetic wound healing. H8, a curcumin analogue, is able to treat diabetes and is anti-inflammatory, and our pretest showed that it has the potential to treat diabetic wound healing. However, H8 is highly expressed in organs such as the liver and kidney, resulting in its unfocused use in diabetic wound targeting. (These data were not published, see Table S1 in the Supporting Information.) Accordingly, it is important to pursue effective carrier vehicles to facilitate the therapeutic uses of H8. The use of H8 delivered by macrophage membrane-derived nanovesicles provides a potential strategy for repairing diabetic wounds with improved drug efficacy and fast healing. In this study, we fabricated an injectable gelatin microsphere (GM) with sustained MMP9-responsive H8 macrophage membrane-derived nanovesicles (H8NVs) with a targeted release to promote angiogenesis that also reduces oxidative stress damage and inflammation, promoting diabetic wound healing. Gelatin microspheres loaded with H8NV (GMH8NV) stimulated by MMP9 can significantly facilitate the migration of NIH-3T3 cells and facilitate the development of tubular structures by HUVEC in vitro. In addition, our results demonstrated that GMH8NV stimulated by MMP9 protected cells from oxidative damage and polarized macrophages to the M2 phenotype, leading to an inflammation inhibition. By stimulating angiogenesis and collagen deposition, inhibiting inflammation, and reducing MMP9 expression, GMH8NV accelerated wound healing. This study showed that GMH8NVs were targeted to release H8NV after MMP9 stimulation, suggesting promising potential in achieving satisfactory healing in diabetic treatment.
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Affiliation(s)
- Jiali Li
- College of Life Science, Mudanjiang Medical University, Mudanjiang 157011, People's Republic of China
- Clinical Laboratory, Maoming Third People's Hospital, Maoming 525000, People's Republic of China
| | - Yan Wu
- College of Life Science, Mudanjiang Medical University, Mudanjiang 157011, People's Republic of China
| | - Qi Yuan
- College of Life Science, Mudanjiang Medical University, Mudanjiang 157011, People's Republic of China
| | - Luxin Li
- College of Life Science, Mudanjiang Medical University, Mudanjiang 157011, People's Republic of China
| | - Wenqi Qin
- College of Life Science, Mudanjiang Medical University, Mudanjiang 157011, People's Republic of China
| | - Jia Jia
- College of Life Science, Mudanjiang Medical University, Mudanjiang 157011, People's Republic of China
| | - Kaiyuan Chen
- College of Life Science, Mudanjiang Medical University, Mudanjiang 157011, People's Republic of China
| | - Dan Wu
- College of Life Science, Mudanjiang Medical University, Mudanjiang 157011, People's Republic of China
| | - Xiaohuan Yuan
- College of Life Science, Mudanjiang Medical University, Mudanjiang 157011, People's Republic of China
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Zhai Y, Li J, Abuduaini A, Yang Z, Yu Z, Chen Y, Liu H, Rong X. [Application of gelatin microspheres in bone tissue engineering]. Sheng Wu Gong Cheng Xue Bao 2023; 39:3724-3737. [PMID: 37805849 DOI: 10.13345/j.cjb.220871] [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] [Subscribe] [Scholar Register] [Indexed: 10/09/2023]
Abstract
Gelatin microspheres were discussed as a scaffold material for bone tissue engineering, with the advantages of its porosity, biodegradability, biocompatibility, and biosafety highlighted. This review discusses how bone regeneration is aided by the three fundamental components of bone tissue engineering-seed cells, bioactive substances, and scaffold materials-and how gelatin microspheres can be employed for in vitro seed cell cultivation to ensure efficient expansion. This review also points out that gelatin microspheres are advantageous as drug delivery systems because of their multifunctional nature, which slows drug release and improves overall effectiveness. Although gelatin microspheres are useful for bone tissue creation, the scaffolds that take into account their porous structure and mechanical characteristics might be difficult to be created. This review then discusses typical techniques for creating gelatin microspheres, their recent application in bone tissue engineering, as well as possible future research directions.
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Affiliation(s)
- Yuanhang Zhai
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Jing Li
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Abudukahaer Abuduaini
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Zijiao Yang
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Zhiruo Yu
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Yixuan Chen
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Hao Liu
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Xin Rong
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
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Jiao Y, Niu Y, Chen X, Luo M, Huang S, Cao T, Shi G, Wei A, Huang J. Gelatin Microspheres Loaded with Wharton's Jelly Mesenchymal Stem Cells Promote Acute Full-Thickness Skin Wound Healing and Regeneration in Mice. Adv Wound Care (New Rochelle) 2022; 12:371-386. [PMID: 36245193 DOI: 10.1089/wound.2022.0034] [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: 12/15/2022] Open
Abstract
Objective: At present, there is an urgent need to develop a novel and practical therapeutic approach to accelerate the healing of acute wounds. Mesenchymal stem cell (MSC)-based therapy is emerging as a promising therapeutic approach for acute skin wounds. However, there are still challenges in clinical application of this strategy, such as low survivability, low retention time, and less engraftment in skin wounds. Approach: Wharton's jelly mesenchymal stem cells (WJMSCs) were seeded into three-dimensional (3D) gelatin microspheres (GMs) to identify the biocompatibility of GMs. WJMSCs were embedded in GMs and then encapsulated with Pluronic F-127 (PF-127) and sodium ascorbyl phosphate (SAP) combination to transplant onto acute full-thickness skin wound in mice. Histology, immunohistochemistry, and immunofluorescence assay were used to investigate the skin wound healing, dermis regeneration, collagen deposition, cell proliferation, and neovascularization. Results: Three-dimensional GM had strong biocompatibility, compared with two-dimensional adherent culturing, GM loading increased the cell viability and proliferation ability of WJMSCs. WJMSCs+GM+PF-127+SAP transplantation increased skin wound healing rate, dermis regeneration, and type III collagen deposition through improving macrophage polarization, cell proliferation, neovascularization, cell retention, and engraftment at skin wound site. Innovation: The effective 3D encapsulation technology for WJMSCs solved the main problems of cell activity and residence time during MSC transplantation. WJMSCs+GM+PF-127+SAP transplantation will be a new and effective MSC biomaterials-based therapeutic strategy for acute skin traumatic wounds. Conclusion: WJMSCs+GM+PF-127+SAP transplantation facilitated acute full-thickness skin wound healing and regeneration and might be a new and effective therapy for acute skin traumatic wounds.
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Affiliation(s)
- Yiren Jiao
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Yongxia Niu
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Xiaolin Chen
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Mingxun Luo
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Sunxing Huang
- Key Laboratory of Reproductive Medicine of Guangdong Province, The First Affiliated Hospital and School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Tianqi Cao
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Guang Shi
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Aisheng Wei
- Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan, China
| | - Junjiu Huang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China.,Key Laboratory of Reproductive Medicine of Guangdong Province, The First Affiliated Hospital and School of Life Sciences, Sun Yat-sen University, Guangzhou, China
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He C, Wei X, Liang T, Liu M, Jiang D, Zhuang L, Wang P. Quantifying the Compressive Force of 3D Cardiac Tissues via Calculating the Volumetric Deformation of Built-In Elastic Gelatin Microspheres. Adv Healthc Mater 2021; 10:e2001716. [PMID: 34197053 DOI: 10.1002/adhm.202001716] [Citation(s) in RCA: 3] [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] [Received: 09/29/2020] [Revised: 12/30/2020] [Indexed: 01/28/2023]
Abstract
Quantifying cardiac contractile force is of paramount important in studying mechanical heart failure and screening therapeutic drugs. However, most existing methods can only measure the in-plane component of twitch force of cardiomyocytes, such that mismatching the centripetal compressive stress of heart beating in physiology. Here, a non-destructive method is developed for quantifying the compressive stress and mapping the distribution of the local stress within the 3D cardiac tissues. In detail, elastic gelatin microspheres labeled with fluorescence beads are fabricated by microfluidic chips with high throughput, and they serve as built-in pressure sensors which are wrapped by cardiomyocytes in 3D tissues. The deformation of microspheres and the displacements of fluorescent beads induced by the contraction of cardiomyocytes are demonstrated to characterize the amount and distribution of the centripetal compressive stress. Further, the method shows a potent capability to locally quantify contractile force variation of 3D cardiac tissues, which is induced by agonist (norepinephrine) and inhibitor (blebbistatin). On the whole, the method significantly improves the 3D measurement of mechanical force in vitro and provides a solution for locally quantifying the compressive stress within engineered cardiac tissues.
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Affiliation(s)
- Chuanjiang He
- Biosensor National Special Laboratory Key Laboratory for Biomedical Engineering Ministry of Education Department of Biomedical Engineering Zhejiang University Hangzhou 310027 China
- State Key Laboratory of Transducer Technology Chinese Academy of Sciences Shanghai 200050 China
| | - Xinwei Wei
- Biosensor National Special Laboratory Key Laboratory for Biomedical Engineering Ministry of Education Department of Biomedical Engineering Zhejiang University Hangzhou 310027 China
| | - Tao Liang
- Biosensor National Special Laboratory Key Laboratory for Biomedical Engineering Ministry of Education Department of Biomedical Engineering Zhejiang University Hangzhou 310027 China
| | - Mengxue Liu
- Biosensor National Special Laboratory Key Laboratory for Biomedical Engineering Ministry of Education Department of Biomedical Engineering Zhejiang University Hangzhou 310027 China
| | - Deming Jiang
- Biosensor National Special Laboratory Key Laboratory for Biomedical Engineering Ministry of Education Department of Biomedical Engineering Zhejiang University Hangzhou 310027 China
| | - Liujing Zhuang
- Biosensor National Special Laboratory Key Laboratory for Biomedical Engineering Ministry of Education Department of Biomedical Engineering Zhejiang University Hangzhou 310027 China
| | - Ping Wang
- Biosensor National Special Laboratory Key Laboratory for Biomedical Engineering Ministry of Education Department of Biomedical Engineering Zhejiang University Hangzhou 310027 China
- State Key Laboratory of Transducer Technology Chinese Academy of Sciences Shanghai 200050 China
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Kim D, Shim YS, An SY, Lee MJ. Role of Zinc-Doped Bioactive Glass Encapsulated with Microspherical Gelatin in Localized Supplementation for Tissue Regeneration: A Contemporary Review. Molecules 2021; 26:molecules26071823. [PMID: 33804968 PMCID: PMC8038022 DOI: 10.3390/molecules26071823] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/19/2021] [Accepted: 03/21/2021] [Indexed: 11/16/2022] Open
Abstract
Gelatin, a natural polymer, provides excellent tissue compatibility for use in tissue rehabilitation. Bioactive glasses (BAG) offer superior capacity in stimulating a bioactive response but show high variability in uptake and solubility. To tackle these drawbacks, a combination of gelatin with BAG is proposed to form composites, which then offer a synergistic response. The cross-linked gelatin structure's mechanical properties are enhanced by the incorporation of the inorganic BAG, and the rate of BAG ionic supplementation responsible for bioactivity and regenerative potential is better controlled by a protective gelatin layer. Several studies have demonstrated the cellular benefits of these composites in different forms of functional modification such as doping with zinc or incorporation of zinc such as ions directly into the BAG matrix. This review presents a comprehensive perspective on the individual characteristics of BAG and gelatin, including the synthesis and mechanism of action. Further, adaptation of the composite into various applications for bone tissue engineering is discussed and future challenges are highlighted.
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Affiliation(s)
- Dokyeong Kim
- Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea;
| | - Youn-Soo Shim
- Department of Dental Hygiene, Sunmoon University, Asan 31460, Korea;
| | - So-Youn An
- Department of Pediatric Dentristry & Wonkwang Bone Regeneration Research Institute, College of Dentistry, Wonkwang University, Iksan-si 5453, Korea;
| | - Myung-Jin Lee
- Department of Dental Hygiene, Division of Health Science, Baekseok University, Cheonan 31065, Korea
- Correspondence: ; Tel.: +82-41-550-2491
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Zhou S, Li L, Chen C, Chen Y, Zhou L, Zhou FH, Dong J, Wang L. Injectable gelatin microspheres loaded with platelet rich plasma improve wound healing by regulating early inflammation. Int J Med Sci 2021; 18:1910-1920. [PMID: 33850460 PMCID: PMC8040391 DOI: 10.7150/ijms.51060] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 02/15/2021] [Indexed: 12/26/2022] Open
Abstract
We investigated the potential of gelatin microspheres (GMs) loaded with platelet-rich plasma (PRP) to enhance their wound healing effect. Platelets from the PRP were immobilized onto GMs to form biomimetic bioreactor GM+PRP. The therapeutic effect of this agent was further investigated in vivo on a wound-healing model in rats. Wounds were locally injected with phosphate buffered saline (PBS), GM, PRP, and GM+PRP. Wound healing rate, vessel density, and inflammation level were measured histologically, by RT-PCR, and by Western blotting at days 3, 7, 14, and 21. Platelets on GM caused a continuous high release in both interleukin-10 and metalloproteinase-3 compared with PRP alone. Both GM+PRP and PRP successfully accelerated the wound healing process, while GM alone did not improve the wound healing process compared with the untreated control. Wounds treated with GM+PRP resulted in shorter healing period and improved dermal structure. GM+PRP improved angiogenesis in the wound by increasing expression of angiogenic factors. GM+PRP prolonged and enhanced the cytokine release profile compared with PRP. By promoting the inflammatory and angiogenic responses, GM+PRP has the potential to improve wound healing. Our findings demonstrate that GMs are an injectable carrier that enhanced the therapeutic effects of PRP.
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Affiliation(s)
- Shaolong Zhou
- Aesthetic Medical School, Yichun University, Yichun, 336000, Jiangxi, China
| | - Li Li
- Aesthetic Medical School, Yichun University, Yichun, 336000, Jiangxi, China
| | - Chen Chen
- Aesthetic Medical School, Yichun University, Yichun, 336000, Jiangxi, China
| | - Yi Chen
- Aesthetic Medical School, Yichun University, Yichun, 336000, Jiangxi, China
| | - Linhua Zhou
- Aesthetic Medical School, Yichun University, Yichun, 336000, Jiangxi, China
| | - Fiona H. Zhou
- UniSA Clinical & Health Sciences, University of South Australia, Adelaide, SA 5001, Australia
- School of Medicine, University of Adelaide, Adelaide, South Australia, 5000, Australia
| | - Jianghui Dong
- UniSA Clinical & Health Sciences, University of South Australia, Adelaide, SA 5001, Australia
| | - Liping Wang
- UniSA Clinical & Health Sciences, University of South Australia, Adelaide, SA 5001, Australia
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Zhao X, Wang Z, Zhao G, Zhang Y, Ji M. Experimental study on embolization of rabbit renal artery with gelatin sponge microspheres. J Cancer Res Ther 2021; 16:1617-1624. [PMID: 33565508 DOI: 10.4103/jcrt.jcrt_1065_19] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Objective The objective of this study was to evaluate the degradation characteristics and embolic effect of gelatin microspheres (GMSs) produced domestically in China through an experimental study comparing the embolization of rabbit renal arteries using GMSs and tris-acryl microspheres. Materials and Methods Sixteen healthy adult New Zealand white rabbits were randomly divided into two groups. Group A was embolized with GMSs produced in China with a diameter of 150-200 μm (n = 8), and Group B was embolized with tris-acryl microspheres with a diameter of 100-200 μm (n = 8). The renal arteries were embolized through femoral artery puncture and catheterization. Renal artery angiography rechecks and hematoxylin and eosin staining of tissue sections were performed at 1 day, 4 days, 7 days, and 14 days after embolization, respectively, to observe vascular recanalization, degradation of microspheres, and embolic effect. Results Group A: Digital subtraction angiography showed complete recanalization at 14 days. The changes in embolic necrotic areas at different time points after embolization were similar in the two groups. At 4 days after embolization, changes in glomerular structure were observed in the kidney on the embolic side. At 7 days after embolization, atrophy, degeneration, and necrosis of the glomeruli, as well as degeneration and inflammatory cell infiltration of the renal tubules, were observed in the kidney on the embolic side. At 14 days after embolization, extensive atrophy and hyalinization of the glomeruli were observed, and local renal tissue showed patchy fibrosis with calcification of internal tissue. Hyperplasia of fibrillar connective tissue was observed in the renal interstitium. Conclusion The GMSs produced domestically in China can be completely degraded after embolizing blood vessels for 14 days. The GMSs are similar to tris-acryl microspheres in arterial embolization effect and are safe and effective.
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Affiliation(s)
- Xu Zhao
- Departement of Interventional Radiology, The Affiliated Sixth Peopleæs Hospital of Dalian Medical University, Dalian 116031, P. R. China
| | - Zhe Wang
- Departement of Medical Oncology, Affiliated Zhongshan Hospital of Dalian University; The Key Laboratory of Biomarker High Throughput Screening and Target Translation of Breast and Gastrointestinal Tumor, Dalian University, Dalian 116001, P. R. China
| | - Guangsheng Zhao
- Departement of Interventional Radiology, Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, P. R. China
| | - Yuewei Zhang
- Hepatobiliary and Pancreatic Center, Beijing Tsinghua Changgeng Hospital, No.168 Litang Road Changping District, Beijing 102218, P. R. China
| | - Min Ji
- Departement of Interventional Radiology, The Affiliated Sixth Peopleæs Hospital of Dalian Medical University, Dalian 116031, P. R. China
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Luo P, Yu L, Lin Q, Wang C, Yang D, Tang S. Strontium Modified Calcium Sulfate Hemihydrate Scaffold Incorporating Ginsenoside Rg1/ Gelatin Microspheres for Bone Regeneration. Front Bioeng Biotechnol 2020; 8:888. [PMID: 33014995 PMCID: PMC7461947 DOI: 10.3389/fbioe.2020.00888] [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] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 07/10/2020] [Indexed: 12/26/2022] Open
Abstract
The aim of this study was to prepare a promising biomaterial for bone tissue repair and regeneration. The Strontium - calcium sulfate hemihydrate (Sr-α-CaS) scaffold incorporating gelatin microspheres (GMs) encapsulated with Ginsenoside Rg1 (Rg1) was designed. The scaffolds of Rg1/GMs/Sr-α-CaS showed sustained release of Rg1, good biocompatibility and ability of promoting osteogenic differentiation and angiogenesis in vitro. The scaffolds were implanted into animal model of cranial bone defect to characterize bone tissue repair and regeneration in vivo. From the images of Micro-CT, it was obvious that the most bone tissue was formed in Rg1/GMs/Sr-α-CaS group in 12 weeks. New bone structure, collagen and mineralization were analyzed with staining of HE, Masson and Safranin O-Fast green and showed good distribution. The expression of osteocalcin of Rg1/GMs/Sr-α-CaS indicated new bone formation in defect site. The results revealed that synergy of Rg1 and Sr showed the best effect of bone repair and regeneration, which provided a new candidate for bone defect repair in clinic.
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Affiliation(s)
- Peng Luo
- Department of Orthopaedics, Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital), Shenzhen, China
- Department of Orthopaedics, The 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Lan Yu
- Department of Laboratory, Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital), Shenzhen, China
| | - Qiang Lin
- Department of Orthopaedics, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou, China
| | - Changde Wang
- Department of Geriatric Orthopeadics, Shenzhen Pingle Orthopaedic Hospital, Shenzhen, China
| | - Dazhi Yang
- Department of Orthopaedics, Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital), Shenzhen, China
- Department of Orthopaedics, The 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Shuo Tang
- Department of Orthopaedics, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
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Strobel HA, Hookway TA, Piola M, Fiore GB, Soncini M, Alsberg E, Rolle MW. Assembly of Tissue-Engineered Blood Vessels with Spatially Controlled Heterogeneities. Tissue Eng Part A 2018; 24:1492-1503. [PMID: 29724157 DOI: 10.1089/ten.tea.2017.0492] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 01/07/2023] Open
Abstract
Tissue-engineered human blood vessels may enable in vitro disease modeling and drug screening to accelerate advances in vascular medicine. Existing methods for tissue-engineered blood vessel (TEBV) fabrication create homogenous tubes not conducive to modeling the focal pathologies characteristic of certain vascular diseases. We developed a system for generating self-assembled human smooth muscle cell (SMC) ring units, which were fused together into TEBVs. The goal of this study was to assess the feasibility of modular assembly and fusion of ring building units to fabricate spatially controlled, heterogeneous tissue tubes. We first aimed to enhance fusion and reduce total culture time, and determined that reducing ring preculture duration improved tube fusion. Next, we incorporated electrospun polymer ring units onto tube ends as reinforced extensions, which allowed us to cannulate tubes after only 7 days of fusion, and culture tubes with luminal flow in a custom bioreactor. To create focal heterogeneities, we incorporated gelatin microspheres into select ring units during self-assembly, and fused these rings between ring units without microspheres. Cells within rings maintained their spatial position along tissue tubes after fusion. Because tubes fabricated from primary SMCs did not express contractile proteins, we also fabricated tubes from human mesenchymal stem cells, which expressed smooth muscle alpha actin and SM22-α. This work describes a platform approach for creating modular TEBVs with spatially defined structural heterogeneities, which may ultimately be applied to mimic focal diseases such as intimal hyperplasia or aneurysm.
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Affiliation(s)
- Hannah A Strobel
- 1 Department of Biomedical Engineering, Worcester Polytechnic Institute , Worcester, Massachusetts
| | - Tracy A Hookway
- 1 Department of Biomedical Engineering, Worcester Polytechnic Institute , Worcester, Massachusetts.,2 The Gladstone Institute of Cardiovascular Disease , San Francisco, California.,3 Department of Biomedical Engineering, Binghamton University , Binghamton, New York
| | - Marco Piola
- 4 Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano , Milan, Italy
| | | | - Monica Soncini
- 4 Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano , Milan, Italy
| | - Eben Alsberg
- 5 Department of Biomedical Engineering, Case Western Reserve University , Cleveland, Ohio.,6 Department of Orthopedic Surgery, Case Western Reserve University , Cleveland, Ohio
| | - Marsha W Rolle
- 1 Department of Biomedical Engineering, Worcester Polytechnic Institute , Worcester, Massachusetts
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Zhuang H, Bu S, Hua L, Darabi MA, Cao X, Xing M. Gelatin-methacrylamide gel loaded with microspheres to deliver GDNF in bilayer collagen conduit promoting sciatic nerve growth. Int J Nanomedicine 2016; 11:1383-94. [PMID: 27099497 PMCID: PMC4824364 DOI: 10.2147/ijn.s96324] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 12/22/2022] Open
Abstract
In this study, we fabricated glial cell-line derived neurotrophic factor (GDNF)-loaded microspheres, then seeded the microspheres in gelatin-methacrylamide hydrogel, which was finally integrated with the commercial bilayer collagen membrane (Bio-Gide®). The novel composite of nerve conduit was employed to bridge a 10 mm long sciatic nerve defect in a rat. GDNF-loaded gelatin microspheres had a smooth surface with an average diameter of 3.9±1.8 μm. Scanning electron microscopy showed that microspheres were uniformly distributed in both the GelMA gel and the layered structure. Using enzyme-linked immunosorbent assay, in vitro release studies (pH 7.4) of GDNF from microspheres exhibited an initial burst release during the first 3 days (18.0%±1.3%), and then, a prolonged-release profile extended to 32 days. However, in an acidic condition (pH 2.5), the initial release percentage of GDNF was up to 91.2%±0.9% within 4 hours and the cumulative release percentage of GDNF was 99.2%±0.2% at 48 hours. Then the composite conduct was implanted in a 10 mm critical defect gap of sciatic nerve in a rat. We found that the nerve was regenerated in both conduit and autograft (AG) groups. A combination of electrophysiological assessment and histomorphometry analysis of regenerated nerves showed that axonal regeneration and functional recovery in collagen tube filled with GDNF-loaded microspheres (GM + CT) group were similar to AG group (P>0.05). Most myelinated nerves were matured and arranged densely with a uniform structure of myelin in a neat pattern along the long axis in the AG and GM + CT groups, however, regenerated nerve was absent in the BLANK group, left the 10 mm gap empty after resection, and the nerve fiber exhibited a disordered arrangement in the collagen tube group. These results indicated that the hybrid system of bilayer collagen conduit and GDNF-loaded gelatin microspheres combined with gelatin-methacrylamide hydrogels could serve as a new biodegradable artificial nerve guide for nerve tissue engineering.
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Affiliation(s)
- Hai Zhuang
- Department of Stomatology, The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu Province, People's Republic of China; Department of Mechanical Engineering, Biochemistry & Medical Genetics, University of Manitoba, Winnipeg, MB, Canada; Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB, Canada
| | - Shoushan Bu
- Department of Stomatology, The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu Province, People's Republic of China
| | - Lei Hua
- Department of Stomatology, The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu Province, People's Republic of China
| | - Mohammad A Darabi
- Department of Mechanical Engineering, Biochemistry & Medical Genetics, University of Manitoba, Winnipeg, MB, Canada; Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB, Canada
| | - Xiaojian Cao
- Department of Orthopedics, The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu Province, People's Republic of China
| | - Malcolm Xing
- Department of Mechanical Engineering, Biochemistry & Medical Genetics, University of Manitoba, Winnipeg, MB, Canada; Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB, Canada
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Li W, Lan Y, Guo R, Zhang Y, Xue W, Zhang Y. In vitro and in vivo evaluation of a novel collagen/cellulose nanocrystals scaffold for achieving the sustained release of basic fibroblast growth factor. J Biomater Appl 2014; 29:882-93. [PMID: 25114196 DOI: 10.1177/0885328214547091] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Tissue-engineered dermis is thought to be the best treatment for skin defects; however, slow vascularization of these biomaterial scaffolds limits their clinical application. Exogenous administration of angiogenic growth factors is highly desirable for tissue regeneration. In this study, biodegradable gelatin microspheres (GMs) containing basic fibroblast growth factor (bFGF) were fabricated and incorporated into a porous collagen/cellulose nanocrystals (CNCs) scaffold, as a platform for long-term release and consequent angiogenic boosting. The physicochemical properties of these scaffolds were examined and the in vitro release pattern of bFGF from scaffolds was measured by ELISA. Collagen/CNCs scaffolds with and without bFGF-GMs were incubated with human umbilical vein endothelial cells for 1 week, results showed that the scaffolds with bFGF-GMs significantly augmented cell proliferation. Then, four different groups of scaffolds were implanted subcutaneously into Sprague-Dawley rats to study angiogenesis in vivo via macroscopic observation, and hematoxylin and eosin and immunohistochemical staining. The results suggested that the collagen/CNCs/bFGF-GMs scaffolds had a significantly higher number of newly formed and mature blood vessels, and the fastest degradation rate. This study demonstrated that collagen/CNCs/bFGF-GMs scaffolds have great potential in skin tissue engineering.
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Affiliation(s)
- Weichang Li
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Jinan University, Guangzhou, China Department of Chemistry, Jinan University, Guangzhou, China
| | - Yong Lan
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Jinan University, Guangzhou, China Department of Biomedical Engineering, Jinan University, Guangzhou, China
| | - Rui Guo
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Jinan University, Guangzhou, China Department of Biomedical Engineering, Jinan University, Guangzhou, China
| | - Yi Zhang
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Jinan University, Guangzhou, China Department of Biomedical Engineering, Jinan University, Guangzhou, China
| | - Wei Xue
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Jinan University, Guangzhou, China Department of Biomedical Engineering, Jinan University, Guangzhou, China
| | - Yuanming Zhang
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Jinan University, Guangzhou, China Department of Chemistry, Jinan University, Guangzhou, China
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Kim S, Kang Y, Krueger CA, Sen M, Holcomb JB, Chen D, Wenke JC, Yang Y. Sequential delivery of BMP-2 and IGF-1 using a chitosan gel with gelatin microspheres enhances early osteoblastic differentiation. Acta Biomater 2012; 8:1768-77. [PMID: 22293583 PMCID: PMC3314097 DOI: 10.1016/j.actbio.2012.01.009] [Citation(s) in RCA: 138] [Impact Index Per Article: 11.5] [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: 10/25/2011] [Revised: 12/22/2011] [Accepted: 01/10/2012] [Indexed: 01/27/2023]
Abstract
The purpose of this study was to develop and characterize a chitosan gel/gelatin microsphere (MSs) dual delivery system for sequential release of bone morphogenetic protein-2 (BMP-2) and insulin-like growth factor-1 (IGF-1) to enhance osteoblast differentiation in vitro. We made and characterized the delivery system based on its degree of cross-linking, degradation, and release kinetics. We also evaluated the cytotoxicity of the delivery system and the effect of growth factors on cell response using pre-osteoblast W-20-17 mouse bone marrow stromal cells. IGF-1 was first loaded into MSs, and then the IGF-1-containing MSs were encapsulated into the chitosan gel which contained BMP-2. Cross-linking of gelatin with glyoxal via Schiff bases significantly increased thermal stability and decreased the solubility of the MSs, leading to a significant decrease in the initial release of IGF-1. Encapsulation of the MSs into the chitosan gel generated polyelectrolyte complexes by intermolecular interactions, which further affected the release kinetics of IGF-1. This combinational delivery system provided an initial release of BMP-2 followed by a slow and sustained release of IGF-1. Significantly greater alkaline phosphatase activity was found in W-20-17 cells treated with the sequential delivery system compared with other treatments (P<0.05) after a week of culture.
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Affiliation(s)
- Sungwoo Kim
- Department of Orthopedic Surgery, Stanford University, Stanford, CA, USA
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Tajima S, Tabata Y. Preparation and functional evaluation of cell aggregates incorporating gelatin microspheres with different degradabilities. J Tissue Eng Regen Med 2012; 7:801-11. [PMID: 22438136 DOI: 10.1002/term.1469] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [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: 06/17/2011] [Revised: 10/26/2011] [Accepted: 01/05/2012] [Indexed: 11/05/2022]
Abstract
The objective of this study was to investigate the viability and biological functions of cells in their aggregates incorporating gelatin microspheres with different degradabilities. After being prepared by a water-in-oil emulsion procedure, the gelatin microspheres were dehydrothermally crosslinked at 140°C for various time periods. In vitro degradation tests showed that the gelatin microspheres were slowly degraded slowly with an increase in the crosslinking time. When MC3T3-E1 cells were cultured with the gelatin hydrogel microspheres in the round U-bottom wells of 96-well microplates which had been coated with poly(vinyl alcohol), cell aggregates with homogeneously distributed gelatin microspheres were formed. A large amount of slowly degraded gelatin microspheres remained in the cell aggregates for long time periods, while a higher proliferation of MC3T3-E1 cells was observed. When evaluated as a measure of aerobic glycolysis, the ratio of l-lactic acid production:glucose consumption of MC3T3-E1 cells was lower for MC3T3-E1 cells in the cell aggregates incorporating slowly degraded gelatin microspheres than for aggregates incorporating rapidly degraded ones. The alkaline phosphatase activity and calcium content of MC3T3-E1 cells were higher for cell aggregates incorporating slowly degraded gelatin microspheres. It is possible that the incorporation of gelatin hydrogel microspheres with slow degradability enabled the permeation of oxygen and nutrients into the cell aggregates for longer time periods, resulting in better culture conditions for the survival, proliferation and differentiation of the cells.
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Affiliation(s)
- Shuhei Tajima
- Department of Biomaterials, Institute for Frontier Medical Sciences, Kyoto University, Japan
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Abstract
Intraperitoneal (ip) injections of gelatin microspheres containing a very small amount of recombinant human interferon alpha A/D (A/D-IFN) (IFN-microspheres) plus free A/D-IFN improved the survival of mice bearing ascitic Meth A-R1 cells which we had isolated as IFN-resistant cells under in vitro conditions. The dose of free A/D-IFN in one injection was 10,000 IU, which was insufficient by itself for manifesting in vivo antitumor activity. In these mice, in vivo R1 cell growth was suppressed and macrophage recruitment was enhanced in comparison with mice receiving other control agents. Administration of IFN-microspheres alone was also effective but less than that of IFN-microspheres plus free A/D-IFN. Peritoneal macrophages obtained from normal or R1-bearing mice receiving ip injection of IFN-microspheres with or without free A/D-IFN were activated to inhibit the in vitro growth of R1 cells. The intratumoral injection of IFN-microspheres strongly inhibited the growth of solid R1 tumors. Intravenous injection of IFN-microspheres was effective in preventing the pulmonary metastasis of B16 melanoma cells. These results indicate that the IFN-microsphere is much more effective against tumors than free A/D-IFN.
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Affiliation(s)
- Y Tabata
- Research Center for Medical Polymers and Biomaterials, Kyoto University
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Abstract
Gelatin microspheres containing recombinant human interferon alpha A/D (A/D-IFN) (IFN-microspheres) potentiated the antitumor activity of mouse peritoneal macrophages (M phi) much more efficiently than free A/D-IFN. M phi acquired the inhibitory activity on tumor cell growth by the ingestion of IFN-microspheres without the aid of lipopolysaccharide (LPS), though LPS was required as a second signal for activating M phi primed with free IFN. The IFN-microspheres were much more efficient than free IFN plus LPS in respect of the IFN amount and the time required for M phi activation. Furthermore, M phi pretreated with the IFN-microspheres maintained their activated state for a much longer period than those pretreated with free A/D-IFN plus LPS. A monoclonal anti-IFN-alpha A antibody, which was capable of neutralizing A/D-IFN, did not interfere with the M phi activation by the IFN-microspheres. Even human IFN-alpha A was effective in activating murine M phi similarly to A/D-IFN, when given in the form of IFN-microspheres, though human IFN-alpha A in the free form was ineffective. These results argue that the mechanism of M phi activation by the IFN-microspheres is different from that by free IFN.
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Affiliation(s)
- Y Tabata
- Research Center for Medical Polymers and Biomaterials, Kyoto University
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