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Wang Y, Zhao L, Zhou L, Chen C, Chen G. Sequential release of vascular endothelial growth factor-A and bone morphogenetic protein-2 from osteogenic scaffolds assembled by PLGA microcapsules: A preliminary study in vitro. Int J Biol Macromol 2023; 232:123330. [PMID: 36681218 DOI: 10.1016/j.ijbiomac.2023.123330] [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: 09/29/2022] [Revised: 12/27/2022] [Accepted: 01/15/2023] [Indexed: 01/19/2023]
Abstract
Bone regeneration is a complex process sequentially regulated by multiple cytokines at different stages. Vascular endothelial growth factor-A (VEGF-A) and bone morphogenetic protein-2 (BMP-2) are the two most important factors involved in this process, and the combination of the two can achieve better bone regeneration by coupling angiogenesis and osteogenesis. In this study, poly(lactic-co-glycolic acid) (PLGA) microspheres with core-shell structure (microcapsules) encapsulating VEGF-A or BMP-2 were prepared by coaxial channel injection and continuous fluid technology. The sequential release of two cytokines by microcapsules with different PLGA molecular weight and shell thickness and its performance in vitro were explored. It was demonstrated that the molecular weight of PLGA significantly affected the degradation and release kinetics of microcapsules, while the thickness of the shell can regulate the release in a finer level. VEGF-A encapsulated microcapsules with low molecular weight can induce vascular endothelial cells to form lumens structures in vitro at an early stage. And BMP-2 encapsulated microcapsules could promote osteogenic differentiation, but the effect could be delayed when the microcapsules were prepared with PLGA of 150 kDa. In conclusion, the core-shell PLGA microcapsules in this study can sequentially release VEGF-A and BMP-2 at different stages to simulate natural bone repair.
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Affiliation(s)
- Ying Wang
- Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu Province Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing 210029, China
| | - Lingyan Zhao
- Department of Oral and Maxillofacial Surgery, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu Province Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing 210029, China
| | - Lvhui Zhou
- Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu Province Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing 210029, China
| | - Chen Chen
- Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu Province Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing 210029, China.
| | - Gang Chen
- Department of Prosthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu Province Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing 210029, China.
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Ding SL, Liu X, Zhao XY, Wang KT, Xiong W, Gao ZL, Sun CY, Jia MX, Li C, Gu Q, Zhang MZ. Microcarriers in application for cartilage tissue engineering: Recent progress and challenges. Bioact Mater 2022; 17:81-108. [PMID: 35386447 PMCID: PMC8958326 DOI: 10.1016/j.bioactmat.2022.01.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/18/2022] [Accepted: 01/19/2022] [Indexed: 12/11/2022] Open
Abstract
Successful regeneration of cartilage tissue at a clinical scale has been a tremendous challenge in the past decades. Microcarriers (MCs), usually used for cell and drug delivery, have been studied broadly across a wide range of medical fields, especially the cartilage tissue engineering (TE). Notably, microcarrier systems provide an attractive method for regulating cell phenotype and microtissue maturations, they also serve as powerful injectable carriers and are combined with new technologies for cartilage regeneration. In this review, we introduced the typical methods to fabricate various types of microcarriers and discussed the appropriate materials for microcarriers. Furthermore, we highlighted recent progress of applications and general design principle for microcarriers. Finally, we summarized the current challenges and promising prospects of microcarrier-based systems for medical applications. Overall, this review provides comprehensive and systematic guidelines for the rational design and applications of microcarriers in cartilage TE. This review summarized fabrication techniques and cartilage repaired application of microcarriers. The appropriate materials and design principle for microcarriers in cartilage tissue engineering are discussed. Promising future perspectives and challenges in microcarriers fields are outlined.
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Liu X, Wang J, Xu X, Zhu H, Man K, Zhang J. SDF-1 Functionalized Hydrogel Microcarriers for Skin Flap Repair. ACS Biomater Sci Eng 2022; 8:3576-3588. [PMID: 35899941 DOI: 10.1021/acsbiomaterials.2c00755] [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: 11/28/2022]
Abstract
Critically sized skin flaps used to treat skin defects often suffer from necrosis due to insufficient blood supply. Hence there is an urgent need to improve the survival rate of skin flaps by promoting local angiogenesis. The delivery of growth factor loaded microcarriers have shown promise in enhancing defect repair, however, their rapid clearance from the defect site limits their regenerative potential. Thus, it is critical to develop microcarriers which can promote the sustained release of bioactive factors to effectively stimulate tissue repair. This study aimed to develop a stromal cell-derived factor 1 (SDF-1) loaded microcarrier coated with Matrigel (MC@SDF-1@Mat) to promote skin flap repair. SEM imaging showed that the surface of the microcarrier was coated by a porous Matrigel film. The drug release experiment showed that the Matrigel-coated microcarriers enhanced the sustained release of the model drug methylene blue when compared to uncoated group. MC@SDF-1@Mat significantly promoted the proliferation, migration, and angiogenesis of HUVECs via CCK-8, wound healing assay, and tube formation assay, respectively. Moreover, the murine random skin flap model was further established and treated. It was found that the flap necrosis area in the MC@SDF-1@Mat treated group was significantly reduced. H&E and Masson staining showed the histological structure and collagen organization exhibited a normal phenotype in the MC@SDF-1@Mat treated group. Additionally, CD31 immunohistochemical analysis showed that the MC@SDF-1@Mat treated group exhibited the greatest degree of neovascularization. In conclusion, our SDF-1 functionalized gelatin-based hydrogel microcarrier has potential clinical applications in promoting skin flap repair and drug delivery.
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Affiliation(s)
- Xiaochuan Liu
- Key Laboratory of 3D Printing Technology in Stomatology, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, P.R. China
| | - Jinsi Wang
- Key Laboratory of 3D Printing Technology in Stomatology, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, P.R. China
| | - Xiaoqin Xu
- Key Laboratory of 3D Printing Technology in Stomatology, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, P.R. China
| | - Hong Zhu
- Key Laboratory of 3D Printing Technology in Stomatology, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, P.R. China
| | - Kenny Man
- School of Chemical Engineering, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Jingying Zhang
- Key Laboratory of 3D Printing Technology in Stomatology, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, P.R. China
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Biomimetic amphiphilic FAAP NPs nanoparticles: Synthesis, characterization and antivirus activity. Int Immunopharmacol 2021; 101:108047. [PMID: 34619499 DOI: 10.1016/j.intimp.2021.108047] [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: 05/20/2021] [Revised: 07/19/2021] [Accepted: 08/02/2021] [Indexed: 11/23/2022]
Abstract
Antiviral agents based on natural products have attracted substantial attention in clinical applications for their distinct biological activities,molecular structuralmultiformities, and low biotoxicities. Ferulic acid (FA) with apigenin propaneto form an esterified FA derivative (FAAP).Herein, we designed a CsPbBr3-modified chitosan oligosaccharide, a biomimetic nanoplatform that could load with FAAP. After self-assembly by combining FAAP with CsPbBr3-modified chitosan oligosaccharide (FAAP NPs), the resulting nanoparticles (FAAP NPs) showed high antioxidant and anti-inflammatory activities for enhancing the inhibition of porcineparvovirus.FAAP NPs exhibited no signs of acute toxicity in vitro or in vivo. DPPH and ABST are widely used for quantitative determination of antioxidant capacity. FAAP NPs exhibited excellent DPPH and ABTS radical scavenging abilities. In addition, we found that FAAP NPs inhibited PPV infection-induced PK-15 cell apoptosis, which was associated with regulating antioxidant and anti-inflammatory signaling pathways. Importantly, we showed that FAAP NPs blocked PPV infection-induced mitochondrial apoptosis in PK-15 cells via a p53/BH3 domain molecular-dependent mechanism.
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Kim HJ, Lee S, Park JM, Cho HB, Park JI, Park JS, Park KH. Development of a three-layer consecutive gene delivery system for enhanced bone regeneration. Biomaterials 2021; 277:121104. [PMID: 34478934 DOI: 10.1016/j.biomaterials.2021.121104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/02/2021] [Accepted: 08/26/2021] [Indexed: 12/19/2022]
Abstract
This study developed a three-layer consecutive gene delivery system (T-CGDS) for timely gene delivery into human mesenchymal stem cells (hMSCs). The timing of transcription factor expression is important to effectively induce bone differentiation. Therefore, a three-layered nanocomposite was fabricated using differently sized gold nanoparticles to promote bone regeneration and osteogenic differentiation. The core layer comprised 80 nm gold nanoparticles coupled with ATF4 pDNA. Following coating with heparin-conjugated Pluronic F-127 (HP-F127), 50 nm gold nanoparticles coupled with SP7 pDNA were added to fabricate a bi-layer system. After further coating with HP-F127, 20 nm gold nanoparticles combined with RUNX2 pDNA were added. Consequently, a T-CGDS measuring 350-450 nm was fabricated. Genes were released for more than 8 days, while the size of the T-CGDS decreased over time. When the T-CGDS was applied to hMSCs, the gene in the outer layer (RUNX2) was expressed first, followed by those in the middle (SP7) and core (ATF4) layers. The T-CGDS effectively induced bone differentiation and regeneration in vitro and in vivo. Timely delivery of the ATF4 gene to stem cells via the T-CGDS can greatly assist osteogenic differentiation involved in bone regeneration.
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Affiliation(s)
- Hye Jin Kim
- Laboratory of Nano-regenerative Medicine, Department of Biomedical Science, College of Life Science, CHA University, 6F, CHA Bio-Complex, 335 Pangyo-ro, Bundang-gu, Seongnam-si, 134-88, Republic of Korea
| | - Sujin Lee
- Laboratory of Nano-regenerative Medicine, Department of Biomedical Science, College of Life Science, CHA University, 6F, CHA Bio-Complex, 335 Pangyo-ro, Bundang-gu, Seongnam-si, 134-88, Republic of Korea
| | - Jong Min Park
- Laboratory of Nano-regenerative Medicine, Department of Biomedical Science, College of Life Science, CHA University, 6F, CHA Bio-Complex, 335 Pangyo-ro, Bundang-gu, Seongnam-si, 134-88, Republic of Korea
| | - Hui Bang Cho
- Laboratory of Nano-regenerative Medicine, Department of Biomedical Science, College of Life Science, CHA University, 6F, CHA Bio-Complex, 335 Pangyo-ro, Bundang-gu, Seongnam-si, 134-88, Republic of Korea
| | - Ji-In Park
- Laboratory of Nano-regenerative Medicine, Department of Biomedical Science, College of Life Science, CHA University, 6F, CHA Bio-Complex, 335 Pangyo-ro, Bundang-gu, Seongnam-si, 134-88, Republic of Korea
| | - Ji Sun Park
- Laboratory of Nano-regenerative Medicine, Department of Biomedical Science, College of Life Science, CHA University, 6F, CHA Bio-Complex, 335 Pangyo-ro, Bundang-gu, Seongnam-si, 134-88, Republic of Korea.
| | - Keun-Hong Park
- Laboratory of Nano-regenerative Medicine, Department of Biomedical Science, College of Life Science, CHA University, 6F, CHA Bio-Complex, 335 Pangyo-ro, Bundang-gu, Seongnam-si, 134-88, Republic of Korea.
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