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Hong KH, Kim Y, Song S. Fine-Tunable and Injectable 3D Hydrogel for On-Demand Stem Cell Niche. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900597. [PMID: 31508277 PMCID: PMC6724362 DOI: 10.1002/advs.201900597] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 05/22/2019] [Indexed: 06/10/2023]
Abstract
Stem-cell-based tissue engineering requires increased stem cell retention, viability, and control of differentiation. The use of biocompatible scaffolds encapsulating stem cells typically addresses the first two problems. To achieve control of stem cell fate, fine-tuned biocompatible scaffolds with bioactive molecules are necessary. However, given that the fine-tuning of stem cell scaffolds is associated with UV irradiation and in situ scaffold gelation, this process is in conflict with injectability. Herein, a fine-tunable and injectable 3D hydrogel system is developed with the use of thermosensitive poly(organophosphazene) bearing β-cyclodextrin (β-CD PPZ) and two types of adamantane-peptides (Ad-peptides) that are associated with mesenchymal stem cell (MSC) differentiation and that serve as stoichiometrically controlled pendants for fine-tuning. Given that complexation of hosts and guests subject to strict stoichiometric control is achieved with simple mixing, these fabricated hydrogels exhibit well-aligned, fine-tuning responses, even in living animals. Injection of MSCs in fine-tuned hydrogels also results in various chondrogenic differentiation levels at three weeks postinjection. This is attributed to the differential controls of Ad-peptides, if MSC preconditioning is excluded. Eventually, the fine-tunable and injectable 3D hydrogel could be applied as platform technology by simply switching the types of peptides bearing adamantane and their stoichiometry.
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Affiliation(s)
- Ki Hyun Hong
- Center for BiomaterialsBiomedical research InstituteKorea Institute of Science and TechnologySeoul02792Republic of Korea
- Division of Bio‐Medical Science and TechnologyKIST SchoolKorea University of Science and TechnologySeoul02792Republic of Korea
| | - Young‐Min Kim
- Center for BiomaterialsBiomedical research InstituteKorea Institute of Science and TechnologySeoul02792Republic of Korea
| | - Soo‐Chang Song
- Center for BiomaterialsBiomedical research InstituteKorea Institute of Science and TechnologySeoul02792Republic of Korea
- Division of Bio‐Medical Science and TechnologyKIST SchoolKorea University of Science and TechnologySeoul02792Republic of Korea
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52
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Ding Z, Zhou M, Zhou Z, Zhang W, Jiang X, Lu X, Zuo B, Lu Q, Kaplan DL. Injectable Silk Nanofiber Hydrogels for Sustained Release of Small-Molecule Drugs and Vascularization. ACS Biomater Sci Eng 2019; 5:4077-4088. [PMID: 33448809 DOI: 10.1021/acsbiomaterials.9b00621] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Strategies to control neovascularization in damaged tissues remain a key issue in regenerative medicine. Unlike most reported desferrioxamine (DFO)-loaded systems where DFO demonstrates a burst release, here we attain zero-order release behavior above 40 days. This outcome was achieved by blending DFO with silk nanofibers with special hydrophilic-hydrophobic properties. The special silk nanofibers showed strong physical binding capacity with DFO, avoiding chemical cross-linking. Using these new biomaterials in vivo in a rat wound model suggested that the DFO-loaded silk nanofiber hydrogel systems stimulated angiogenesis by the sustained release of DFO, but also facilitated cell migration and tissue ingrowth. These features resulted in faster formation of a blood vessel network in the wounds, as well improved healing when compared to the free DFO system. The DFO-loaded systems are also suitable for the regeneration of other tissues, such as nerve and bone, suggesting universality in the biomedical field.
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Affiliation(s)
| | - Mingliang Zhou
- Department of Prosthodontics, Oral Bioengineering and Regenerative Medicine Lab, Shanghai Key Laboratory of Stomatology, Ninth People's Hospital Affiliated to Shanghai JiaoTong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | | | - Wenjie Zhang
- Department of Prosthodontics, Oral Bioengineering and Regenerative Medicine Lab, Shanghai Key Laboratory of Stomatology, Ninth People's Hospital Affiliated to Shanghai JiaoTong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | - Xinquan Jiang
- Department of Prosthodontics, Oral Bioengineering and Regenerative Medicine Lab, Shanghai Key Laboratory of Stomatology, Ninth People's Hospital Affiliated to Shanghai JiaoTong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | | | | | | | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
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Chen Y, Xie Y, Liu M, Hu J, Tang C, Huang J, Qin T, Chen X, Chen W, Shen W, Yin Z. Controlled-release curcumin attenuates progression of tendon ectopic calcification by regulating the differentiation of tendon stem/progenitor cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109711. [PMID: 31349489 DOI: 10.1016/j.msec.2019.04.090] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 04/19/2019] [Accepted: 04/29/2019] [Indexed: 01/30/2023]
Abstract
Tendon calcification is a common but intractable problem leading to pain and activity limitation when injury or tendinopathy progresses into the late stage. This is because tendon stem/progenitor cells (TSPCs) can undergo aberrant osteogenic differentiation under inflammatory conditions. This study aims to investigate the effect of curcumin, a natural anti-inflammatory agent, on regulating the differentiation of TSPCs in tendon calcification. With inflammatory stimulation, TSPCs showed higher alkaline phosphatase activity and more frequent formation of mineralized nodules which were verified in the culture system; however, curcumin significantly alleviated these pathological changes. In in vivo function analysis, chitosan microsphere-encapsulated curcumin was delivered to injured sites of rat tendon ectopic calcification model. The inflammation in the tendon tissues of the curcumin group was significantly relieved. Controlled-release curcumin partially rescued tendon calcification and enhanced tendon regeneration in animal model. This study demonstrates that controlled-release curcumin can manipulate the fate decision of TSPCs, and that it promotes the tenogenesis and inhibits the osteogenesis of TSPCs in a pathological microenvironment, which provides a possible new therapeutic strategy for tendon disease.
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Affiliation(s)
- Yangwu Chen
- School of Basic Medical Sciences, and Department of Orthopedic Surgery of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China; Orthopaedics Research Institute of Zhejiang Univerisity, China
| | - Yubin Xie
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Mengfei Liu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiajie Hu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Chenqi Tang
- School of Basic Medical Sciences, and Department of Orthopedic Surgery of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China; Orthopaedics Research Institute of Zhejiang Univerisity, China
| | - Jiayun Huang
- School of Basic Medical Sciences, and Department of Orthopedic Surgery of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China; Orthopaedics Research Institute of Zhejiang Univerisity, China
| | - Tian Qin
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiao Chen
- School of Basic Medical Sciences, and Department of Orthopedic Surgery of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China; Department of Sports Medicine, Zhejiang University School of Medicine, Hangzhou, China; China Orthopedic Regenerative Medicine Group (CORMed), China
| | - Weishan Chen
- School of Basic Medical Sciences, and Department of Orthopedic Surgery of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Orthopaedics Research Institute of Zhejiang Univerisity, China.
| | - Weiliang Shen
- School of Basic Medical Sciences, and Department of Orthopedic Surgery of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China; Orthopaedics Research Institute of Zhejiang Univerisity, China; Department of Sports Medicine, Zhejiang University School of Medicine, Hangzhou, China; China Orthopedic Regenerative Medicine Group (CORMed), China.
| | - Zi Yin
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China.
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Ambekar RS, Kandasubramanian B. Progress in the Advancement of Porous Biopolymer Scaffold: Tissue Engineering Application. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b05334] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Rushikesh S. Ambekar
- Rapid Prototype & Electrospinning Lab, Department of Metallurgical and Materials Engineering, DIAT (DU), Ministry of Defence, Girinagar, Pune 411025, India
| | - Balasubramanian Kandasubramanian
- Rapid Prototype & Electrospinning Lab, Department of Metallurgical and Materials Engineering, DIAT (DU), Ministry of Defence, Girinagar, Pune 411025, India
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55
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Wei PF, Yuan ZY, Jing W, Guan BB, Liu ZH, Zhang X, Mao JP, Chen DF, Cai Q, Yang XP. Regenerating infected bone defects with osteocompatible microspheres possessing antibacterial activity. Biomater Sci 2019; 7:272-286. [PMID: 30467569 DOI: 10.1039/c8bm00903a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Treatment of infected bone defects still remains a formidable clinical challenge, and the design of bone implants with both anti-bacterial activity and osteogenesis effects is nowadays regarded as a powerful strategy for infection control and bone healing.
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Affiliation(s)
- Peng-Fei Wei
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology
- Beijing 100029
- P.R. China
| | - Zuo-Ying Yuan
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology
- Beijing 100029
- P.R. China
| | - Wei Jing
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology
- Beijing 100029
- P.R. China
| | - Bin-Bin Guan
- Department of Stomatology
- Tianjin Medical University General Hospital
- Tianjin 300052
- P.R. China
| | - Zi-Hao Liu
- Department of Endodontics
- School and Hospital of Stomatology
- Tianjin Medical University
- Tianjin 300070
- P.R. China
| | - Xu Zhang
- Department of Endodontics
- School and Hospital of Stomatology
- Tianjin Medical University
- Tianjin 300070
- P.R. China
| | - Jian-Ping Mao
- Department of Spine Surgery
- Beijing Jishuitan Hospital
- Beijing 100035
- P.R. China
| | - Da-Fu Chen
- Laboratory of Bone Tissue Engineering
- Beijing Research institute of Traumatology and Orthopaedics
- Beijing Jishuitan Hospital
- Beijing 100035
- P.R. China
| | - Qing Cai
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology
- Beijing 100029
- P.R. China
| | - Xiao-Ping Yang
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology
- Beijing 100029
- P.R. China
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56
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Liu Z, Chen X, Zhang Z, Zhang X, Saunders L, Zhou Y, Ma PX. Nanofibrous Spongy Microspheres To Distinctly Release miRNA and Growth Factors To Enrich Regulatory T Cells and Rescue Periodontal Bone Loss. ACS NANO 2018; 12:9785-9799. [PMID: 30141906 PMCID: PMC6205210 DOI: 10.1021/acsnano.7b08976] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
In addition to T cells' roles in immune response and autoimmune diseases, certain types of T cells, called regulatory T cells (Tregs), play important roles in microenvironment modulation for resolution and tissue regeneration. However, there are currently few options available other than introducing more Tregs or immunosuppressive drugs to locally enrich Tregs. Herein, poly(l-lactic acid) (PLLA) nanofibrous spongy microspheres (NF-SMS), PLLA/polyethylene glycol (PEG) co-functionalized mesoporous silica nanoparticles (MSN), and poly(lactic acid- co-glycolic acid) microspheres (PLGA MS) are integrated into one multibiologic delivery vehicle for in situ Treg manipulation, where the MSNs and PLGA MS were utilized to distinctly release IL-2/TGF-β and miR-10a to locally recruit T cells and stimulate their differentiation into Tregs, while PLLA NF-SMS serve as an injectable scaffold for the adhesion and proliferation of these Tregs. In a mouse model of periodontitis, the injectable and biomolecule-delivering PLLA NF-SMS lead to Treg enrichment, expansion, and Treg-mediated immune therapy against bone loss. This system can potentially be utilized in a wide variety of other immune and regenerative therapies.
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Affiliation(s)
- Zhongning Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology; National Clinical Research Center for Oral Diseases; National Engineering Laboratory for Digital and Material Technology of Stomatology; Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China
- Department of Biologic and Materials Sciences, The University of Michigan, Ann Arbor, MI 48109, USA
| | - Xin Chen
- Department of Biologic and Materials Sciences, The University of Michigan, Ann Arbor, MI 48109, USA
| | - Zhanpeng Zhang
- Department of Biologic and Materials Sciences, The University of Michigan, Ann Arbor, MI 48109, USA
| | - Xiaojin Zhang
- Department of Biologic and Materials Sciences, The University of Michigan, Ann Arbor, MI 48109, USA
| | - Laura Saunders
- Macromolecular Science and Engineering Center, The University of Michigan, Ann Arbor, MI 48109, USA
| | - Yongsheng Zhou
- Department of Prosthodontics, Peking University School and Hospital of Stomatology; National Clinical Research Center for Oral Diseases; National Engineering Laboratory for Digital and Material Technology of Stomatology; Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China
- Corresponding Authors (Y. Zhou): , (P.X. Ma):
| | - Peter X. Ma
- Department of Biologic and Materials Sciences, The University of Michigan, Ann Arbor, MI 48109, USA
- Macromolecular Science and Engineering Center, The University of Michigan, Ann Arbor, MI 48109, USA
- Department of Biomedical Engineering, Department of Materials Sciences and Engineering, The University of Michigan, Ann Arbor, MI 48109, USA
- Corresponding Authors (Y. Zhou): , (P.X. Ma):
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57
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Dang M, Saunders L, Niu X, Fan Y, Ma PX. Biomimetic delivery of signals for bone tissue engineering. Bone Res 2018; 6:25. [PMID: 30181921 PMCID: PMC6115422 DOI: 10.1038/s41413-018-0025-8] [Citation(s) in RCA: 130] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 05/22/2018] [Accepted: 06/15/2018] [Indexed: 02/06/2023] Open
Abstract
Bone tissue engineering is an exciting approach to directly repair bone defects or engineer bone tissue for transplantation. Biomaterials play a pivotal role in providing a template and extracellular environment to support regenerative cells and promote tissue regeneration. A variety of signaling cues have been identified to regulate cellular activity, tissue development, and the healing process. Numerous studies and trials have shown the promise of tissue engineering, but successful translations of bone tissue engineering research into clinical applications have been limited, due in part to a lack of optimal delivery systems for these signals. Biomedical engineers are therefore highly motivated to develop biomimetic drug delivery systems, which benefit from mimicking signaling molecule release or presentation by the native extracellular matrix during development or the natural healing process. Engineered biomimetic drug delivery systems aim to provide control over the location, timing, and release kinetics of the signal molecules according to the drug's physiochemical properties and specific biological mechanisms. This article reviews biomimetic strategies in signaling delivery for bone tissue engineering, with a focus on delivery systems rather than specific molecules. Both fundamental considerations and specific design strategies are discussed with examples of recent research progress, demonstrating the significance and potential of biomimetic delivery systems for bone tissue engineering.
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Affiliation(s)
- Ming Dang
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI USA
| | - Laura Saunders
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI USA
| | - Xufeng Niu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, China
| | - Peter X. Ma
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI USA
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI USA
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI USA
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58
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Liu Q, Wang J, Chen Y, Zhang Z, Saunders L, Schipani E, Chen Q, Ma PX. Suppressing mesenchymal stem cell hypertrophy and endochondral ossification in 3D cartilage regeneration with nanofibrous poly(l-lactic acid) scaffold and matrilin-3. Acta Biomater 2018; 76:29-38. [PMID: 29940371 DOI: 10.1016/j.actbio.2018.06.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 06/03/2018] [Accepted: 06/21/2018] [Indexed: 12/27/2022]
Abstract
Articular cartilage has a very limited ability to self-heal after injury or degeneration due to its low cellularity, poor proliferative activity, and avascular nature. Current clinical options are able to alleviate patient suffering, but cannot sufficiently regenerate the lost tissue. Biomimetic scaffolds that recapitulate the important features of the extracellular matrix (ECM) of cartilage are hypothesized to be advantageous in supporting cell growth, chondrogenic differentiation, and integration of regenerated cartilage with native cartilage, ultimately restoring the injured tissue to its normal function. It remains a challenge to support and maintain articular cartilage regenerated by bone marrow-derived mesenchymal stem cells (BMSCs), which are prone to hypertrophy and endochondral ossification after implantation in vivo. In the present work, a nanofibrous poly(l-lactic acid) (NF PLLA) scaffold developed by our group was utilized because of the desired highly porous structure, high interconnectivity, and collagen-like NF architecture to support rabbit BMSCs for articular cartilage regeneration. We further hypothesized that matrilin-3 (MATN3), a non-collagenous, cartilage-specific ECM protein, would enhance the microenvironment of the NF PLLA scaffold for cartilage regeneration and maintain the cartilage property. To test this hypothesis, we seeded BMSCs on the NF PLLA scaffold with or without MATN3. We found that MATN3 suppresses hypertrophy in this 3D culture system in vitro. Subcutaneous implantation of the chondrogenic cell/scaffold constructs in a nude mouse model showed that pretreatment with MATN3 was able to maintain chondrogenesis and prevent hypertrophy and endochondral ossification in vivo. These results demonstrate that the porous NF PLLA scaffold treated with MATN3 represents an advantageous 3D microenvironment for cartilage regeneration and phenotype maintenance, and is a promising strategy for articular cartilage repair. STATEMENT OF SIGNIFICANCE Articular cartilage defects, caused by trauma, inflammation, or joint instability, may ultimately lead to debilitating pain and disability. Bone marrow-derived mesenchymal stem cells (BMSCs) are an attractive cell source for articular cartilage tissue engineering. However, chondrogenic induction of BMSCs is often accompanied by undesired hypertrophy, which can lead to calcification and ultimately damage the cartilage. Therefore, a therapy to prevent hypertrophy and endochondral ossification is of paramount importance to adequately regenerate articular cartilage. We hypothesized that MATN3 (a non-collagenous ECM protein expressed exclusively in cartilage) may improve regeneration of articular cartilage with BMSCs by maintaining chondrogenesis and preventing hypertrophic transition in an ECM mimicking nanofibrous scaffold. Our results showed that the administration of MATN3 to the cell/nanofibrous scaffold constructs favorably maintained chondrogenesis and prevented hypertrophy/endochondral ossification in the chondrogenic constructs in vitro and in vivo. The combination of nanofibrous PLLA scaffolds and MATN3 treatment provides a very promising strategy to generate chondrogenic grafts with phenotypic stability for articular cartilage repair.
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Zhang X, Kang X, Jin L, Bai J, Liu W, Wang Z. Stimulation of wound healing using bioinspired hydrogels with basic fibroblast growth factor (bFGF). Int J Nanomedicine 2018; 13:3897-3906. [PMID: 30013343 PMCID: PMC6038860 DOI: 10.2147/ijn.s168998] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION The objective of this study is to stimulate wound healing using bioinspired hydrogels with basic fibroblast growth factor (bFGF). MATERIALS AND METHODS Inspired by the crosslinking mechanism in algae-based adhesives, hydrogels were fabricated with gum arabic, pectin, and Ca2+. The physical properties of the bioinspired hydrogels were characterized, and the in vitro release of bFGF was investigated. Then, the in vitro scratch assay for wound healing and in vivo wound healing experiment in a full-thickness excision wound model were performed for the bioinspired hydrogels with bFGF. Finally, histological examinations and organ toxicity tests were conducted to investigate the wound healing applications of the bioinspired hydrogels with bFGF. RESULTS The in vitro and in vivo results showed that the bioinspired hydrogels with bFGF could significantly enhance cell proliferation, wound re-epithelialization, collagen deposition, and contraction without any noticeable toxicity and inflammation compared with the hydrogels without bFGF and commercial wound healing products. CONCLUSION These results suggest the potential application of bioinspired hydrogels with bFGF for wound healing.
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Affiliation(s)
- Xiaoyu Zhang
- Third Ward of Tumor Surgery Department, Cangzhou Central Hospital, Cangzhou, Hebei Province, People's Republic of China,
| | - Xiaoning Kang
- Third Ward of Ultrasound Department, Cangzhou Central Hospital, Cangzhou, Hebei Province, People's Republic of China
| | - Lijun Jin
- Third Ward of Tumor Surgery Department, Cangzhou Central Hospital, Cangzhou, Hebei Province, People's Republic of China,
| | - Jie Bai
- Third Ward of Tumor Surgery Department, Cangzhou Central Hospital, Cangzhou, Hebei Province, People's Republic of China,
| | - Wei Liu
- Third Ward of Tumor Surgery Department, Cangzhou Central Hospital, Cangzhou, Hebei Province, People's Republic of China,
| | - Zunyi Wang
- Third Ward of Tumor Surgery Department, Cangzhou Central Hospital, Cangzhou, Hebei Province, People's Republic of China,
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Wei P, Yuan Z, Cai Q, Mao J, Yang X. Bioresorbable Microspheres with Surface-Loaded Nanosilver and Apatite as Dual-Functional Injectable Cell Carriers for Bone Regeneration. Macromol Rapid Commun 2018; 39:e1800062. [DOI: 10.1002/marc.201800062] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 03/27/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Pengfei Wei
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; Beijing 100029 P. R. China
| | - Zuoying Yuan
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; Beijing 100029 P. R. China
| | - Qing Cai
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; Beijing 100029 P. R. China
| | - Jianping Mao
- Department of Spine Surgery; Beijing Jishuitan Hospital; Beijing 100035 P. R. China
| | - Xiaoping Yang
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; Beijing 100029 P. R. China
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61
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Zhang W, Yu X, Li Y, Su Z, Jandt KD, Wei G. Protein-mimetic peptide nanofibers: Motif design, self-assembly synthesis, and sequence-specific biomedical applications. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2017.12.001] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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62
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Qu M, Xiao W, Tian J, Wang S, Li H, Liu X, Yang X, Li B, Liao X. Fabrication of superparamagnetic nanofibrous poly(l
-lactic acid)/γ-Fe2
O3
microspheres for cell carriers. J Biomed Mater Res B Appl Biomater 2018; 107:511-520. [DOI: 10.1002/jbm.b.34141] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 02/22/2018] [Accepted: 03/25/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Moyuan Qu
- Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices; Chongqing University of Science and Technology; Chongqing China
- State Key Laboratory of Oral Diseases; National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University; Chengdu China
| | - Wenqian Xiao
- Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices; Chongqing University of Science and Technology; Chongqing China
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection Technology; Chongqing University of Science and Technology; Chongqing China
| | - Jiarong Tian
- Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices; Chongqing University of Science and Technology; Chongqing China
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection Technology; Chongqing University of Science and Technology; Chongqing China
| | - Song Wang
- Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices; Chongqing University of Science and Technology; Chongqing China
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection Technology; Chongqing University of Science and Technology; Chongqing China
| | - Hong Li
- Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices; Chongqing University of Science and Technology; Chongqing China
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection Technology; Chongqing University of Science and Technology; Chongqing China
| | - Xue Liu
- Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices; Chongqing University of Science and Technology; Chongqing China
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection Technology; Chongqing University of Science and Technology; Chongqing China
| | - Xiaoling Yang
- Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices; Chongqing University of Science and Technology; Chongqing China
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection Technology; Chongqing University of Science and Technology; Chongqing China
| | - Bo Li
- Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices; Chongqing University of Science and Technology; Chongqing China
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection Technology; Chongqing University of Science and Technology; Chongqing China
| | - Xiaoling Liao
- Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices; Chongqing University of Science and Technology; Chongqing China
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection Technology; Chongqing University of Science and Technology; Chongqing China
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63
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Fabrication of nanofibrous microcarriers mimicking extracellular matrix for functional microtissue formation and cartilage regeneration. Biomaterials 2018; 171:118-132. [PMID: 29684676 DOI: 10.1016/j.biomaterials.2018.04.033] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/13/2018] [Accepted: 04/14/2018] [Indexed: 01/08/2023]
Abstract
Cartilage has rather limited capacities for self-repair and regeneration. To repair complexly shaped cartilage tissue defects, we propose the application of microtissues fabricated from bone marrow-derived mesenchymal stem cells (BMSCs) cultured in natural bionic nanofibrous microcarriers (NF-MCs). The NF-MCs were structurally and functionally designed to mimic natural extracellular matrix (ECM) by crosslinking dialdehyde bacterial cellulose (DBC) with DL-allo-hydroxylysine (DHYL) and complexing chitosan (CS) with DHYL through electrostatic interactions. The orthogonal design allows for fine tuning of fiber diameter, pore size, porosity, mechanical properties, and biodegradation rate of the NF-MC. BMSCs cultured in NF-MCs showed improved proliferation compared with those cultured in chitosan microcarriers (CS-MCs). After three-week culture under microgravity conditions, functional cartilage microtissues were generated. When implanted into a knee articular cartilage defect in mice, the microtissue showed superior in vivo cartilage repair as characterized by cell tracking, histology, micro CT image, and gait analysis. Versatile in natural biopolymer design and biomimetic in nanofibrous component embedded in macroporous microcarriers, these injectable NC-MCs demonstrate to be effective carriers for cell proliferation and differentiation. Furthermore, the functional microtissues also show their prospect in repair of cartilage tissue, and suggest their potential for other tissues in general.
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64
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Liu Q, Jia Z, Duan L, Xiong J, Wang D, Ding Y. Functional peptides for cartilage repair and regeneration. Am J Transl Res 2018; 10:501-510. [PMID: 29511444 PMCID: PMC5835815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 01/10/2018] [Indexed: 06/08/2023]
Abstract
Cartilage repair after degeneration or trauma continues to be a challenge both in the clinic and for scientific research due to the limited regenerative capacity of this tissue. Cartilage tissue engineering, involving a combination of cells, scaffolds, and growth factors, is increasingly used in cartilage regeneration. Due to their ease of synthesis, robustness, tunable size, availability of functional groups, and activity, peptides have emerged as the molecules with the most potential in drug development. A number of peptides have been engineered to regenerate cartilage by acting as scaffolds, functional molecules, or both. In this paper, we will summarize the application of peptides in cartilage tissue engineering and discuss additional possibilities for peptides in this field.
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Affiliation(s)
- Qisong Liu
- Department of Orthopedic, Memorial Hospital of Sun Yat-sen UniversityGuangzhou 510120, Guangdong Province, China
- Shenzhen Key Laboratory of Tissue Engineering, Shenzhen Second People’s HospitalShenzhen 518035, Guangdong Province, China
- Department of Orthopedics, Shenzhen Second People’s HospitalShenzhen 518035, Guangdong Province, China
- Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic TechnologyShenzhen 518035, Guangdong Province, China
| | - Zhaofeng Jia
- Shenzhen Key Laboratory of Tissue Engineering, Shenzhen Second People’s HospitalShenzhen 518035, Guangdong Province, China
- Department of Orthopedics, Shenzhen Second People’s HospitalShenzhen 518035, Guangdong Province, China
- Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic TechnologyShenzhen 518035, Guangdong Province, China
| | - Li Duan
- Shenzhen Key Laboratory of Tissue Engineering, Shenzhen Second People’s HospitalShenzhen 518035, Guangdong Province, China
- Department of Orthopedics, Shenzhen Second People’s HospitalShenzhen 518035, Guangdong Province, China
- Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic TechnologyShenzhen 518035, Guangdong Province, China
| | - Jianyi Xiong
- Shenzhen Key Laboratory of Tissue Engineering, Shenzhen Second People’s HospitalShenzhen 518035, Guangdong Province, China
- Department of Orthopedics, Shenzhen Second People’s HospitalShenzhen 518035, Guangdong Province, China
- Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic TechnologyShenzhen 518035, Guangdong Province, China
| | - Daping Wang
- Shenzhen Key Laboratory of Tissue Engineering, Shenzhen Second People’s HospitalShenzhen 518035, Guangdong Province, China
- Department of Orthopedics, Shenzhen Second People’s HospitalShenzhen 518035, Guangdong Province, China
- Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic TechnologyShenzhen 518035, Guangdong Province, China
| | - Yue Ding
- Department of Orthopedic, Memorial Hospital of Sun Yat-sen UniversityGuangzhou 510120, Guangdong Province, China
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65
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Cong H, Yu B, Gao L, Yang B, Gao F, Zhang H, Liu Y. Preparation of morphology-controllable PGMA-DVB microspheres by introducing Span 80 into seed emulsion polymerization. RSC Adv 2018; 8:2593-2598. [PMID: 35541463 PMCID: PMC9077385 DOI: 10.1039/c7ra13158e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 01/05/2018] [Indexed: 11/21/2022] Open
Abstract
Microporous, hollow, or macroporous polymer spheres were prepared by a seed emulsion polymerisation method. Different from the conventional seeded emulsion polymerization, the sorbitan monooleate (Span 80) was added to the seeded emulsion polymerization. In this study, the monodisperse PS seeds prepared by dispersion polymerization were swelled by dibutyl phthalate (DBP), glycidyl methacrylate (GMA), divinylbenzene (DVB) and Span 80 successively. The effect of the amount of Span 80 on the morphology of microspheres was investigated. As different amount of Span 80 was added to the mixture, the poly(glycidyl methacrylate-divinylbenzene) (PGMA-DVB) microspheres showed a variety of morphologies containing microporous, hollow, and macroporous structure. In addition, uniform hollow particles with different pore size can be obtained through adjusting the amount of Span 80. The obtained PGMA-DVB microspheres showed a variety of morphologies by adjusting the amount of Span 80 in the seeded emulsion polymerization.![]()
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Affiliation(s)
- Hailin Cong
- Institute of Biomedical Materials and Engineering
- College of Chemistry and Chemical Engineering
- Qingdao University
- Qingdao 266071
- China
| | - Bing Yu
- Institute of Biomedical Materials and Engineering
- College of Chemistry and Chemical Engineering
- Qingdao University
- Qingdao 266071
- China
| | - Lilong Gao
- Institute of Biomedical Materials and Engineering
- College of Chemistry and Chemical Engineering
- Qingdao University
- Qingdao 266071
- China
| | - Bo Yang
- Institute of Biomedical Materials and Engineering
- College of Chemistry and Chemical Engineering
- Qingdao University
- Qingdao 266071
- China
| | - Fei Gao
- Institute of Biomedical Materials and Engineering
- College of Chemistry and Chemical Engineering
- Qingdao University
- Qingdao 266071
- China
| | - Hongbo Zhang
- Institute of Biomedical Materials and Engineering
- College of Chemistry and Chemical Engineering
- Qingdao University
- Qingdao 266071
- China
| | - Yangchun Liu
- Institute of Biomedical Materials and Engineering
- College of Chemistry and Chemical Engineering
- Qingdao University
- Qingdao 266071
- China
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66
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Feng G, Zhang Z, Dang M, Zhang X, Doleyres Y, Song Y, Chen D, Ma PX. Injectable nanofibrous spongy microspheres for NR4A1 plasmid DNA transfection to reverse fibrotic degeneration and support disc regeneration. Biomaterials 2017; 131:86-97. [PMID: 28376367 PMCID: PMC5448136 DOI: 10.1016/j.biomaterials.2017.03.029] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 03/17/2017] [Accepted: 03/20/2017] [Indexed: 02/06/2023]
Abstract
Safe and efficient gene therapy is highly desired for controlling pathogenic fibrosis of nucleus pulposus (NP) tissue, which would result in intervertebral disc (IVD) degeneration and disability if left untreated. In this work, a hyperbranched polymer (HP) with high plasmid DNA (pDNA) binding affinity and negligible cytotoxicity is synthesized, which can self-assemble into nano-sized polyplexes with a "double shell" structure that can transfect pDNA into NP cells with very high efficiency. These polyplexes are then encapsulated in biodegradable nanospheres (NS) to enable two-stage delivery: 1) temporally-controlled release of pDNA-carrying polyplexes and 2) highly efficient delivery of pDNA into cells by the released polyplexes. These biodegradable NS are co-injected with nanofibrous spongy microspheres (NF-SMS) to localize the cellular transfection of the pDNA encoding orphan nuclear receptor 4A1 (NR4A1), which was recently reported as a therapeutic agent to delay pathogenic fibrosis. It is shown that HP can transfect human NP cells efficiently in vitro with low cytotoxicity. The two-stage delivery system is able to present the polyplexes over a sustained time period (more than 30 days) in the tail of a rat. The NR4A1 pDNA carried by the HP polyplexes is found to therapeutically reduce the pathogenic fibrosis of NP tissue in a rat-tail degeneration model. In conclusion, the combination of the two-stage NR4A1 pDNA delivery NS and NF-SMS is able to repress fibrosis and to support IVD regeneration.
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Affiliation(s)
- Ganjun Feng
- Department of Biologic and Materials Science, University of Michigan, Ann Arbor, MI, 48109, USA; Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Zhanpeng Zhang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Ming Dang
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Xiaojin Zhang
- Department of Biologic and Materials Science, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Yasmine Doleyres
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Yueming Song
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Di Chen
- Department of Biochemistry, Rush University, Chicago, IL, 60612, USA
| | - Peter X Ma
- Department of Biologic and Materials Science, University of Michigan, Ann Arbor, MI, 48109, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA; Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI, 48109, USA; Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.
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67
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Balavigneswaran CK, Mahto SK, Subia B, Prabhakar A, Mitra K, Rao V, Ganguli M, Ray B, Maiti P, Misra N. Tailored Chemical Properties of 4-Arm Star Shaped Poly(d,l-lactide) as Cell Adhesive Three-Dimensional Scaffolds. Bioconjug Chem 2017; 28:1236-1250. [DOI: 10.1021/acs.bioconjchem.7b00071] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | | | - Bano Subia
- CSIR-Institute of Genomics and Integrative Biology, Mathura road, New Delhi-110025, India
| | - Arumugam Prabhakar
- CSIR-Institute of Genomics and Integrative Biology, Mathura road, New Delhi-110025, India
- Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhavan, 2 Rafi Marg, New Delhi-110001, India
| | - Kheyanath Mitra
- Department
of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Vivek Rao
- CSIR-Institute of Genomics and Integrative Biology, Mathura road, New Delhi-110025, India
- Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhavan, 2 Rafi Marg, New Delhi-110001, India
| | - Munia Ganguli
- CSIR-Institute of Genomics and Integrative Biology, Mathura road, New Delhi-110025, India
- Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhavan, 2 Rafi Marg, New Delhi-110001, India
| | - Biswajit Ray
- Department
of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
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68
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Liao J, Wang B, Huang Y, Qu Y, Peng J, Qian Z. Injectable Alginate Hydrogel Cross-Linked by Calcium Gluconate-Loaded Porous Microspheres for Cartilage Tissue Engineering. ACS OMEGA 2017; 2:443-454. [PMID: 30023607 PMCID: PMC6044773 DOI: 10.1021/acsomega.6b00495] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Accepted: 01/30/2017] [Indexed: 02/05/2023]
Abstract
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A great interest has been shown in
the injectable scaffolds for
cartilage tissue regeneration because it can fill irregularly shaped
defects easily through minimally invasive surgical treatments. Herein,
we developed a new injectable three-dimensional (3D) alginate hydrogel
loaded with biodegradable porous poly(ε-caprolactone)–b-poly(ethylene glycol)–b-poly(ε-caprolactone)
microspheres (MPs/Alg) as the calcium gluconate container to cross-link
alginate. Suspensions of chondrocytes/alginate and porous microspheres
turned into a gel because of the release of calcium gluconate; thus,
the injectable composite hydrogels give a 3D scaffold to fit the defects
perfectly and integrate the extracellular-matrix-mimicking architecture
to efficiently accommodate cartilage cells in situ. Tissue repair
in a full-thickness cartilage defect model was controlled at 6, 12,
and 18 weeks after the implant by micro-CT and immunohistochemistry
to evaluate the healing status. The defect in the MPs/Alg+
cells group achieved an almost complete repair at 18 weeks, and the
repaired chondrocytes regained a normal tissue structure. Moreover,
the MPs/Alg+ cells-treated group increased the quality of tissue formed,
including the accumulated glycosaminoglycan and the uniformly deposited
type II collagen. The results point out the promising application
of the injectable MPs/Alg-chondrocytes system for cartilage tissue
engineering.
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Affiliation(s)
| | | | - YiXing Huang
- Department
of Orthopaedic Surgery, Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, P. R. China
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69
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Polystyrene-based Hollow Microsphere Synthesized by γ-ray Irradiation-assisted Polymerization and Self-Assembly and Its Application in Detection of Ionizing Radiation. Sci Rep 2017; 7:41876. [PMID: 28139775 PMCID: PMC5282558 DOI: 10.1038/srep41876] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 12/30/2016] [Indexed: 11/09/2022] Open
Abstract
To simply and multitudinously synthesize hollow microspheres in a pure system is important for relevant research and application. Here, a simple and novel one-pot synthetic strategy to prepare polystyrene (PS) hollow microspheres via irradiation-assisted free-radical polymerizing and self-assembly (IFPS) approach under γ-ray irradiation with no additives introduced into the system is presented. And PS/2,5-Diphenyloxazole (PPO) fluorescent microspheres have been prepared successfully by IFPS reaction, which can be used as scintillators for the detection of ionizing radiation. A linear relationship between emitted luminescence and dose-activity in water is obtained, which suggests that composite microspheres could be used as liquid scintillation in specific environment.
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70
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Kazemnejad S, Khanmohammadi M, Baheiraei N, Arasteh S. Current State of Cartilage Tissue Engineering using Nanofibrous Scaffolds and Stem Cells. Avicenna J Med Biotechnol 2017; 9:50-65. [PMID: 28496944 PMCID: PMC5410130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Cartilage is an avascular, aneural, and alymphatic connective tissue with a limited capacity caused by low mitotic activity of its resident cells, chondrocytes. Natural repair of full thickness cartilage defects usually leads to the formation of fibrocartilage with lower function and mechanical force compared with the original hyaline cartilage and further deterioration can occur. Tissue engineering and regenerative medicine is a promising strategy to repair bone and articular cartilage defects and rehabilitate joint functions by focusing on the optimal combination of cells, material scaffolds, and signaling molecules. The unique physical and topographical properties of nanofibrous structures allow them to mimic the extracellular matrix of native cartilage, making an appropriate resemblance to induce cartilage tissue regeneration and reconstruction. To improve simulation of native cartilage, the incorporation of nanofibrous scaffolds with suitable corresponsive cells could be effective. In this review article, an attempt was made to present the current state of cartilage tissue engineering using nanofibrous scaffolds and stem cells as high proliferative immune privilege cells with chondrogenic differentiation ability. The comprehensive information was retrieved by search of relevant subject headings in Medline/Pubmed and Elsevier databases.
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Affiliation(s)
- Somaieh Kazemnejad
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran,Corresponding author: Somaieh Kazemnejad, Ph.D., Reproductive Biotechnology, Research Center Avicenna, Research Institute, ACECR, Tehran, Iran, Tel: +98 21 22432020, Fax: +98 21 22432021, E-mail:,
| | - Manijeh Khanmohammadi
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Nafiseh Baheiraei
- Department of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Shaghayegh Arasteh
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
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71
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Tan YJ, Tan X, Yeong WY, Tor SB. Hybrid microscaffold-based 3D bioprinting of multi-cellular constructs with high compressive strength: A new biofabrication strategy. Sci Rep 2016; 6:39140. [PMID: 27966623 PMCID: PMC5155425 DOI: 10.1038/srep39140] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 11/17/2016] [Indexed: 12/27/2022] Open
Abstract
A hybrid 3D bioprinting approach using porous microscaffolds and extrusion-based printing method is presented. Bioink constitutes of cell-laden poly(D,L-lactic-co-glycolic acid) (PLGA) porous microspheres with thin encapsulation of agarose-collagen composite hydrogel (AC hydrogel). Highly porous microspheres enable cells to adhere and proliferate before printing. Meanwhile, AC hydrogel allows a smooth delivery of cell-laden microspheres (CLMs), with immediate gelation of construct upon printing on cold build platform. Collagen fibrils were formed in the AC hydrogel during culture at body temperature, improving the cell affinity and spreading compared to pure agarose hydrogel. Cells were proven to proliferate in the bioink and the bioprinted construct. High cell viability up to 14 days was observed. The compressive strength of the bioink is more than 100 times superior to those of pure AC hydrogel. A potential alternative in tissue engineering of tissue replacements and biological models is made possible by combining the advantages of the conventional solid scaffolds with the new 3D bioprinting technology.
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Affiliation(s)
- Yu Jun Tan
- Singapore Centre for 3D Printing, School of Mechanical &Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
| | - Xipeng Tan
- Singapore Centre for 3D Printing, School of Mechanical &Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
| | - Wai Yee Yeong
- Singapore Centre for 3D Printing, School of Mechanical &Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
| | - Shu Beng Tor
- Singapore Centre for 3D Printing, School of Mechanical &Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
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72
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Yu J, Huang TR, Lim ZH, Luo R, Pasula RR, Liao LD, Lim S, Chen CH. Production of Hollow Bacterial Cellulose Microspheres Using Microfluidics to Form an Injectable Porous Scaffold for Wound Healing. Adv Healthc Mater 2016; 5:2983-2992. [PMID: 27805793 DOI: 10.1002/adhm.201600898] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 09/15/2016] [Indexed: 12/20/2022]
Abstract
Bacterial cellulose (BC) is a biocompatible material with high purity and robust mechanical strength used to fabricate desirable scaffolds for 3D cell culture and wound healing. However, the chemical resistance of BC and its insolubility in the majority of solutions make it difficult to manipulate using standard chemical methods. In this study, a microfluidic process is developed to produce hollow BC microspheres with desirable internal structures and morphology. Microfluidics is used to generate a core-shell structured microparticle with an alginate core and agarose shell as a template to encapsulate Gluconacetobacter xylinus for long-term static culture. G. xylinus then secretes BC, which becomes entangled within the shell of the structured hydrogel microparticles and forms BC microspheres. The removal of the hydrogel template via thermal-chemical treatments yields robust BC microspheres exhibiting a hollow morphology. These hollow microspheres spontaneously assemble as functional units to form a novel injectable scaffold. In vitro, a highly porous scaffold is created to enable effective 3D cell culture with a high cell proliferation rate and better depth distribution. In vivo, this injectable scaffold facilitates tissue regeneration, resulting in rapid wound-healing in a Sprague Dawley rat skin model.
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Affiliation(s)
- Jiaqing Yu
- Department of Biomedical Engineering; National University of Singapore; 9 Engineering Drive 1 117575 Singapore
| | - Tzu-Rung Huang
- Singapore Institute for Neurotechnology; 28 Medical Drive, #05-COR 117456 Singapore
| | - Zhen Han Lim
- Department of Biomedical Engineering; National University of Singapore; 9 Engineering Drive 1 117575 Singapore
| | - Rongcong Luo
- Department of Biomedical Engineering; National University of Singapore; 9 Engineering Drive 1 117575 Singapore
| | - Rupali Reddy Pasula
- Division of Bioengineering; School of Chemical and Biomedical Engineering; College of Engineering; Nanyang Technological University; 62 Nanyang Drive 637459 Singapore
| | - Lun-De Liao
- Singapore Institute for Neurotechnology; 28 Medical Drive, #05-COR 117456 Singapore
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes; 35 Keyan Road, Zhunan Town, Miaoli County 35053 Taiwan
| | - Sierin Lim
- Division of Bioengineering; School of Chemical and Biomedical Engineering; College of Engineering; Nanyang Technological University; 62 Nanyang Drive 637459 Singapore
| | - Chia-Hung Chen
- Department of Biomedical Engineering; National University of Singapore; 9 Engineering Drive 1 117575 Singapore
- Singapore Institute for Neurotechnology; 28 Medical Drive, #05-COR 117456 Singapore
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73
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Zhang Z. Injectable biomaterials for stem cell delivery and tissue regeneration. Expert Opin Biol Ther 2016; 17:49-62. [DOI: 10.1080/14712598.2017.1256389] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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74
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Dai C, Zhang A, Liu M, Gu L, Guo X, Song C. Hollow Alveolus-Like Nanovesicle Assembly with Metal-Encapsulated Hollow Zeolite Nanocrystals. ACS NANO 2016; 10:7401-7408. [PMID: 27429013 DOI: 10.1021/acsnano.6b00888] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Inspired by the vesicular structure of alveolus which has a porous nanovesicle structure facilitating the transport of oxygen and carbon dioxide, we designed a hollow nanovesicle assembly with metal-encapsulated hollow zeolite that would enhance diffusion of reactants/products and inhibit sintering and leaching of active metals. This zeolitic nanovesicle has been successfully synthesized by a strategy which involves a one-pot hydrothermal synthesis of hollow assembly of metal-containing solid zeolite crystals without a structural template and a selective desilication-recrystallization accompanied by leaching-hydrolysis to convert the metal-containing solid crystals into metal-encapsulated hollow crystals. We demonstrate the strategy in synthesizing a hollow nanovesicle assembly of Fe2O3-encapsulated hollow crystals of ZSM-5 zeolite. This material possesses a microporous (0.4-0.6 nm) wall of hollow crystals and a mesoporous (5-17 nm) shell of nanovesicle with macropores (about 350 nm) in the core. This hierarchical structure enables excellent Fe2O3 dispersion (3-4 nm) and resistance to sintering even at 800 °C; facilitates the transport of reactant/products; and exhibits superior activity and resistance to leaching in phenol degradation. Hollow nanovesicle assembly of Fe-Pt bimetal-encapsulated hollow ZSM-5 crystals was also prepared.
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Affiliation(s)
- Chengyi Dai
- State Key Laboratory of Fine Chemicals, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology , Dalian 116024, P. R. China
| | - Anfeng Zhang
- State Key Laboratory of Fine Chemicals, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology , Dalian 116024, P. R. China
| | - Min Liu
- State Key Laboratory of Fine Chemicals, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology , Dalian 116024, P. R. China
| | - Lin Gu
- State Key Laboratory of Fine Chemicals, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology , Dalian 116024, P. R. China
- Shanghai Baosteel Chemical Co., Ltd. , No. 3501 Tongji Road, Shanghai, P. R. China
| | - Xinwen Guo
- State Key Laboratory of Fine Chemicals, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology , Dalian 116024, P. R. China
| | - Chunshan Song
- State Key Laboratory of Fine Chemicals, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology , Dalian 116024, P. R. China
- EMS Energy Institute, PSU-DUT Joint Center for Energy Research, Department of Energy and Mineral Engineering, and Department of Chemical Engineering, Pennsylvania State University , University Park, Pennsylvania 16802, United States
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75
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Zhang Z, Eyster TW, Ma PX. Nanostructured injectable cell microcarriers for tissue regeneration. Nanomedicine (Lond) 2016; 11:1611-28. [PMID: 27230960 PMCID: PMC5619097 DOI: 10.2217/nnm-2016-0083] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 05/05/2016] [Indexed: 11/21/2022] Open
Abstract
Biodegradable polymer microspheres have emerged as cell carriers for the regeneration and repair of irregularly shaped tissue defects due to their injectability, controllable biodegradability and capacity for drug incorporation and release. Notably, recent advances in nanotechnology allowed the manipulation of the physical and chemical properties of the microspheres at the nanoscale, creating nanostructured microspheres mimicking the composition and/or structure of natural extracellular matrix. These nanostructured microspheres, including nanocomposite microspheres and nanofibrous microspheres, have been employed as cell carriers for tissue regeneration. They enhance cell attachment and proliferation, promote positive cell-carrier interactions and facilitate stem cell differentiation for target tissue regeneration. This review highlights the recent advances in nanostructured microspheres that are employed as injectable, biomimetic and cell-instructive cell carriers.
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Affiliation(s)
- Zhanpeng Zhang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109-1078, USA
| | - Thomas W Eyster
- Department of Biologic & Materials Sciences, University of Michigan, Ann Arbor, MI 48109-1078, USA
| | - Peter X Ma
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109-1078, USA
- Department of Biologic & Materials Sciences, University of Michigan, Ann Arbor, MI 48109-1078, USA
- Macromolecular Science & Engineering Center, University of Michigan, Ann Arbor, MI 48109-1078, USA
- Materials Science & Engineering, University of Michigan, Ann Arbor, MI 48109-1078, USA
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76
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Chen W, Zhang Q, Luk BT, Fang RH, Liu Y, Gao W, Zhang L. Coating nanofiber scaffolds with beta cell membrane to promote cell proliferation and function. NANOSCALE 2016; 8:10364-70. [PMID: 27139582 PMCID: PMC4866884 DOI: 10.1039/c6nr00535g] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The cell membrane cloaking technique has emerged as an intriguing strategy in nanomaterial functionalization. Coating synthetic nanostructures with natural cell membranes bestows the nanostructures with unique cell surface antigens and functions. Previous studies have focused primarily on development of cell membrane-coated spherical nanoparticles and the uses thereof. Herein, we attempt to extend the cell membrane cloaking technique to nanofibers, a class of functional nanomaterials that are drastically different from nanoparticles in terms of dimensional and mechanophysical characteristics. Using pancreatic beta cells as a model cell line, we demonstrate successful preparation of cell membrane-coated nanofibers and validate that the modified nanofibers possess an antigenic exterior closely resembling that of the source beta cells. When such nanofiber scaffolds are used to culture beta cells, both cell proliferation rate and function are significantly enhanced. Specifically, glucose-dependent insulin secretion from the cells is increased by near five-fold compared with the same beta cells cultured in regular, unmodified nanofiber scaffolds. Overall, coating cell membranes onto nanofibers could add another dimension of flexibility and controllability in harnessing cell membrane functions and offer new opportunities for innovative applications.
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Affiliation(s)
- Wansong Chen
- Department of NanoEngineering and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA.
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77
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Jin M, Yu DG, Wang X, Geraldes CFGC, Williams GR, Bligh SWA. Electrospun Contrast-Agent-Loaded Fibers for Colon-Targeted MRI. Adv Healthc Mater 2016; 5:977-85. [PMID: 26899401 DOI: 10.1002/adhm.201500872] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 12/23/2015] [Indexed: 01/03/2023]
Abstract
Magnetic resonance imaging is a diagnostic tool used for detecting abnormal organs and tissues, often using Gd(III) complexes as contrast-enhancing agents. In this work, core-shell polymer fibers have been prepared using coaxial electrospinning, with the intent of delivering gadolinium (III) diethylenetriaminepentaacetate hydrate (Gd(DTPA)) selectively to the colon. The fibers comprise a poly(ethylene oxide) (PEO) core loaded with Gd(DTPA), and a Eudragit S100 shell. They are homogeneous, with distinct core-shell phases. The components in the fibers are dispersed in an amorphous fashion. The proton relaxivities of Gd(DTPA) are preserved after electrospinning. To permit easy visualization of the release of the active ingredient from the fibers, analogous materials are prepared loaded with the dye rhodamine B. Very little release is seen in a pH 1.0 buffer, while sustained release is seen at pH 7.4. The fibers thus have the potential to selectively deliver Gd(DTPA) to the colon. Mucoadhesion studies reveal there are strong adhesive forces between porcine colon mucosa and PEO from the core, and the dye-loaded fibers can be successfully used to image the porcine colon wall. The electrospun core-shell fibers prepared in this work can thus be developed as advanced functional materials for effective imaging of colonic abnormalities.
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Affiliation(s)
- Miao Jin
- UCL School of Pharmacy; University College London; 29-39 Brunswick Square; London WC1N 1AX UK
| | - Deng-Guang Yu
- School of Materials Science and Engineering; University of Shanghai for Science and Technology; Shanghai 200093 China
| | - Xia Wang
- School of Materials Science and Engineering; University of Shanghai for Science and Technology; Shanghai 200093 China
| | - Carlos F. G. C. Geraldes
- Department of Life Sciences and Coimbra Chemistry Center - CQC; Faculty of Science and Technology; University of Coimbra; Coimbra 3000-393 Portugal
| | - Gareth R. Williams
- UCL School of Pharmacy; University College London; 29-39 Brunswick Square; London WC1N 1AX UK
| | - S. W. Annie Bligh
- Faculty of Science and Technology; University of Westminster; 115 New Cavendish Street London W1W 6UW UK
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78
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Cao FY, Long Y, Wang SB, Li B, Fan JX, Zeng X, Zhang XZ. Fluorescence light-up AIE probe for monitoring cellular alkaline phosphatase activity and detecting osteogenic differentiation. J Mater Chem B 2016; 4:4534-4541. [DOI: 10.1039/c6tb00828c] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Three phosphorylated tetraphenylethylene (TPE) probes were synthesized for monitoring ALP activity in living stem cells and detecting osteogenic differentiation.
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Affiliation(s)
- Feng-Yi Cao
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- China
| | - Yue Long
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- China
| | - Shi-Bo Wang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- China
| | - Bin Li
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- China
| | - Jin-Xuan Fan
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- China
| | - Xuan Zeng
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- China
| | - Xian-Zheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry
- Wuhan University
- Wuhan 430072
- China
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79
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Zhang Z, Ma PX. From Nanofibrous Hollow Microspheres to Nanofibrous Hollow Discs and Nanofibrous Shells. Macromol Rapid Commun 2015; 36:1735-41. [PMID: 26247175 PMCID: PMC4678097 DOI: 10.1002/marc.201500342] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Revised: 07/14/2015] [Indexed: 11/10/2022]
Abstract
Nano- and microsized structures are of central importance to advanced materials and nanotechnologies, which have tremendously impacted both biomedical and physical sciences. Herein, novel emulsification and thermally induced phase separation (TIPS) techniques to fabricate linear polymers into nanofibrous hollow objects are reported for the first time. Through manipulating the emulsification conditions, the evolution of the emulsion structure can be controlled and nanofibrous hollow microspheres with a controllable opening size and nano-fibrous shells can be fabricated. Through adjusting the rheological properties of the emulsions, nanofibrous hollow discs are also created. A new mechanistic hypotheses of the nanofibrous hollow object formation is proposed: the nano- and microscaled structures are independently determined by TIPS and the emulsification process, respectively. Guided by this theory, the nanofiber formation conditions for two further additional polymers (polyacrylonitrile and Nylon) under TIPS are identified, and solid/nanofibrous non-hollow/hollow microspheres are created from these two additional polymers under TIPS and emulsification for the first time. Therefore, the developed strategy is applicable to various polymer systems, and can broadly impact nano- and microfabrication technologies.
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Affiliation(s)
- Zhanpeng Zhang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109-1078
| | - Peter X. Ma
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109-1078
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI, 48109-1078
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI, 48109-1078
- Department of Materials Science and Engineering University of Michigan, Ann Arbor, MI, 48109-1078
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80
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Yu F, Cao X, Li Y, Chen X. Diels-Alder Click-Based Hydrogels for Direct Spatiotemporal Postpatterning via Photoclick Chemistry. ACS Macro Lett 2015; 4:289-292. [PMID: 35596333 DOI: 10.1021/mz5007427] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Click chemistry not only has been applied to the design of hydrogel scaffolds for 3D cell culture, but also is an efficient way for hydrogel postfunctionalization and spatiotemporal patterning. To the best of our knowledge, only azide-alkyne cycloaddition (SPAAC) has been exploited by combining photoinitiated thiol-ene click reaction to realize the 3D patterning of hydrogels. In this work, the cyclohexene derivative, which "clicked" by functional groups between furyl and maleimide, were successfully functionalized by thiol-modified molecules or peptides through thiol-ene click reaction. It illustrates a hydrogel that formed via Diels-Alder (DA) click chemistry between furyl-modified hyaluronic acid and bimaleimide functional PEG molecule can be allowed for the directly photoactivated thiol-ene chemistry for hydrogel spatiotemporal patterning. Since the cyclohexene derivatives produced by DA reaction can be employed in all subsequent 3D network patterning by using photoclick reactions, it suggests a new way to design and postfunctionalize all of the DA click-based hydrogels with specific regional bioactive cues.
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Affiliation(s)
- Feng Yu
- School
of Materials Science and Engendering, South China University of Technology, Guangzhou, 510641, People’s Republic of China
- National Engineering
Research Centre for Tissue Restoration and Reconstruction, Guangzhou, 510006, People’s Republic of China
| | - Xiaodong Cao
- School
of Materials Science and Engendering, South China University of Technology, Guangzhou, 510641, People’s Republic of China
- National Engineering
Research Centre for Tissue Restoration and Reconstruction, Guangzhou, 510006, People’s Republic of China
- Guangdong
Province Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
| | - Yuli Li
- National Engineering
Research Centre for Tissue Restoration and Reconstruction, Guangzhou, 510006, People’s Republic of China
- Guangdong
Province Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
| | - Xiaofeng Chen
- School
of Materials Science and Engendering, South China University of Technology, Guangzhou, 510641, People’s Republic of China
- National Engineering
Research Centre for Tissue Restoration and Reconstruction, Guangzhou, 510006, People’s Republic of China
- Guangdong
Province Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
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81
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Feng W, Yin Z, Wang W, Chen L, Zhou X, Qiu K, Zhou J, Zhang Y, He C. Synthesis and characterization of nanofibrous hollow microspheres with tunable size and morphology via thermally induced phase separation technique. RSC Adv 2015. [DOI: 10.1039/c5ra11525f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanofibrous hollow microspheres with tunable size and morphology were fabricated by using the thermally induced phase separation technique.
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Affiliation(s)
- Wei Feng
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Zhiqi Yin
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Weizhong Wang
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Liang Chen
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Xiaojun Zhou
- College of Materials Science and Engineering
- Donghua University
- Shanghai 201620
- China
| | - Kexin Qiu
- College of Materials Science and Engineering
- Donghua University
- Shanghai 201620
- China
| | - Jianfeng Zhou
- Research Center for Analysis and Measurement
- Donghua University
- Shanghai 201620
- China
| | - Yanzhong Zhang
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Chuanglong He
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
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