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Jiao Y, Niu Y, Chen X, Luo M, Huang S, Cao T, Shi G, Wei A, Huang J. Gelatin Microspheres Loaded with Wharton's Jelly Mesenchymal Stem Cells Promote Acute Full-Thickness Skin Wound Healing and Regeneration in Mice. Adv Wound Care (New Rochelle) 2022; 12:371-386. [PMID: 36245193 DOI: 10.1089/wound.2022.0034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Objective: At present, there is an urgent need to develop a novel and practical therapeutic approach to accelerate the healing of acute wounds. Mesenchymal stem cell (MSC)-based therapy is emerging as a promising therapeutic approach for acute skin wounds. However, there are still challenges in clinical application of this strategy, such as low survivability, low retention time, and less engraftment in skin wounds. Approach: Wharton's jelly mesenchymal stem cells (WJMSCs) were seeded into three-dimensional (3D) gelatin microspheres (GMs) to identify the biocompatibility of GMs. WJMSCs were embedded in GMs and then encapsulated with Pluronic F-127 (PF-127) and sodium ascorbyl phosphate (SAP) combination to transplant onto acute full-thickness skin wound in mice. Histology, immunohistochemistry, and immunofluorescence assay were used to investigate the skin wound healing, dermis regeneration, collagen deposition, cell proliferation, and neovascularization. Results: Three-dimensional GM had strong biocompatibility, compared with two-dimensional adherent culturing, GM loading increased the cell viability and proliferation ability of WJMSCs. WJMSCs+GM+PF-127+SAP transplantation increased skin wound healing rate, dermis regeneration, and type III collagen deposition through improving macrophage polarization, cell proliferation, neovascularization, cell retention, and engraftment at skin wound site. Innovation: The effective 3D encapsulation technology for WJMSCs solved the main problems of cell activity and residence time during MSC transplantation. WJMSCs+GM+PF-127+SAP transplantation will be a new and effective MSC biomaterials-based therapeutic strategy for acute skin traumatic wounds. Conclusion: WJMSCs+GM+PF-127+SAP transplantation facilitated acute full-thickness skin wound healing and regeneration and might be a new and effective therapy for acute skin traumatic wounds.
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Affiliation(s)
- Yiren Jiao
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Yongxia Niu
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Xiaolin Chen
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Mingxun Luo
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Sunxing Huang
- Key Laboratory of Reproductive Medicine of Guangdong Province, The First Affiliated Hospital and School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Tianqi Cao
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Guang Shi
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Aisheng Wei
- Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan, China
| | - Junjiu Huang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China.,Key Laboratory of Reproductive Medicine of Guangdong Province, The First Affiliated Hospital and School of Life Sciences, Sun Yat-sen University, Guangzhou, China
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2
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Xia S, Weng T, Jin R, Yang M, Yu M, Zhang W, Wang X, Han C. Curcumin-incorporated 3D bioprinting gelatin methacryloyl hydrogel reduces reactive oxygen species-induced adipose-derived stem cell apoptosis and improves implanting survival in diabetic wounds. BURNS & TRAUMA 2022; 10:tkac001. [PMID: 35291229 PMCID: PMC8918758 DOI: 10.1093/burnst/tkac001] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 12/07/2021] [Accepted: 01/03/2022] [Indexed: 12/17/2022]
Abstract
Background Gelatin methacryloyl (GelMA) hydrogels loaded with stem cells have proved to be an effective clinical treatment for wound healing. Advanced glycation end product (AGE), interacting with its particular receptor (AGER), gives rise to reactive oxygen species (ROS) and apoptosis. Curcumin (Cur) has excellent antioxidant activity and regulates intracellular ROS production and apoptosis. In this study, we developed a Cur-incorporated 3D-printed GelMA to insert into adipose-derived stem cells (ADSCs) and applied it to diabetic wounds. Methods GelMA hydrogels with Cur were fabricated and their in vitro effects on ADSCs were investigated. We used structural characterization, western blot, ROS and apoptosis assay to evaluate the antioxidant and anti-apoptotic activity, and assessed the wound healing effects to investigate the mechanism underlying regulation of apoptosis by Cur via the AGE/AGER/nuclear factor-κB (NF-κB) p65 pathway. Results A 10% GelMA scaffold exhibited appropriate mechanical properties and biocompatibility for ADSCs. The circular mesh structure demonstrated printability of 10% GelMA and Cur-GelMA bioinks. The incorporation of Cur into the 10% GelMA hydrogel showed an inhibitory effect on AGEs/AGER/NF-κB p65-induced ROS generation and ADSC apoptosis. Furthermore, Cur-GelMA scaffold promoted cell survival and expedited in vivo diabetic wound healing. Conclusions The incorporation of Cur improved the antioxidant activity of 3D-printed GelMA hydrogel and mitigated AGE/AGER/p65 axis-induced ROS and apoptosis in ADSCs. The effects of scaffolds on wound healing suggested that Cur/GelMA-ADSC hydrogel could be an effective biological material for accelerating wound healing.
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Affiliation(s)
- Sizhan Xia
- Department of Burns and Wound Care Center, Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310000, China
| | - Tingting Weng
- Department of Burns and Wound Care Center, Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310000, China
| | - Ronghua Jin
- Department of Burns and Wound Care Center, Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310000, China
| | - Min Yang
- Department of Burns and Wound Care Center, Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310000, China
| | - Meirong Yu
- Clinical Research Center, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310000, China
| | - Wei Zhang
- Department of Burns and Wound Care Center, Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310000, China
| | - Xingang Wang
- Department of Burns and Wound Care Center, Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310000, China
| | - Chunmao Han
- Department of Burns and Wound Care Center, Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310000, China
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Lian M, Sun B, Han Y, Yu B, Xin W, Xu R, Ni B, Jiang W, Hao Y, Zhang X, Shen Y, Qiao Z, Dai K. A low-temperature-printed hierarchical porous sponge-like scaffold that promotes cell-material interaction and modulates paracrine activity of MSCs for vascularized bone regeneration. Biomaterials 2021; 274:120841. [PMID: 33984633 DOI: 10.1016/j.biomaterials.2021.120841] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 03/31/2021] [Accepted: 04/16/2021] [Indexed: 12/11/2022]
Abstract
Mesenchymal stem cells (MSCs) secrete paracrine trophic factors that are beneficial for tissue regeneration. In this study, a sponge-like scaffold with hierarchical and interconnected pores was developed using low-temperature deposition modeling (LDM) printing. Its effects on the cellular behavior, especially on the paracrine secretion patterns of MSCs, were comprehensively investigated. We found that compared with the scaffolds printed via the fused deposition modeling (FDM) technique, the LDM-printed sponges enhanced the adhesion, retention, survival, and ingrowth of MSCs and promoted cell-material interactions. Moreover, the paracrine functions of the cultured MSCs on the LDM-printed sponges were improved, with significant secretion of upregulated immunomodulatory, angiogenic, and osteogenic factors. MSCs on the LDM-printed sponges exert beneficial paracrine effects on multiple regenerative processes, including macrophage polarization, tube formation, and osteogenesis, verifying the enhanced immunomodulatory, angiogenic, and osteogenic potential. Further protein function assays indicated that focal adhesion kinase (FAK), downstream AKT, and yes-associated-protein (YAP) signaling might participate in the required mechanotransductive pathways, through which the hierarchical porous structures stimulated the paracrine effects of MSCs. In a rat distal femoral defect model, the MSC-laden LDM-printed sponges significantly promoted vascularized bone regeneration. The results of the present study demonstrate that the hierarchical porous biomimetic sponges prepared via LDM printing have potential applications in tissue engineering based on their cell-material interaction promotion and MSC paracrine function modulation effects. Furthermore, our findings suggest that the optimization of biomaterial properties to direct the paracrine signaling of MSCs would enhance tissue regeneration.
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Affiliation(s)
- Meifei Lian
- Clinical and Translational Research Center for 3D Printing Technology, Medical 3D Printing Innovation Research Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China; Department of Prosthodontics, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Binbin Sun
- Clinical and Translational Research Center for 3D Printing Technology, Medical 3D Printing Innovation Research Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China; Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Yu Han
- Clinical and Translational Research Center for 3D Printing Technology, Medical 3D Printing Innovation Research Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China; Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Bin Yu
- Department of Oral & Cranio-Maxillofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Weiwei Xin
- Department of Orthopaedic Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201112, China
| | - Ruida Xu
- Department of Orthopaedic Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201112, China
| | - Bing Ni
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Wenbo Jiang
- Clinical and Translational Research Center for 3D Printing Technology, Medical 3D Printing Innovation Research Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China; Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Yongqiang Hao
- Clinical and Translational Research Center for 3D Printing Technology, Medical 3D Printing Innovation Research Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China; Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Xiuyin Zhang
- Department of Prosthodontics, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Yi Shen
- Department of Orthopaedic Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201112, China.
| | - Zhiguang Qiao
- Clinical and Translational Research Center for 3D Printing Technology, Medical 3D Printing Innovation Research Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China; Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China; Department of Orthopaedic Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201112, China.
| | - Kerong Dai
- Clinical and Translational Research Center for 3D Printing Technology, Medical 3D Printing Innovation Research Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China; Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
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Colazo JM, Evans BC, Farinas AF, Al-Kassis S, Duvall CL, Thayer WP. Applied Bioengineering in Tissue Reconstruction, Replacement, and Regeneration. TISSUE ENGINEERING PART B-REVIEWS 2020; 25:259-290. [PMID: 30896342 DOI: 10.1089/ten.teb.2018.0325] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
IMPACT STATEMENT The use of autologous tissue in the reconstruction of tissue defects has been the gold standard. However, current standards still face many limitations and complications. Improving patient outcomes and quality of life by addressing these barriers remain imperative. This article provides historical perspective, covers the major limitations of current standards of care, and reviews recent advances and future prospects in applied bioengineering in the context of tissue reconstruction, replacement, and regeneration.
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Affiliation(s)
- Juan M Colazo
- 1Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.,2Medical Scientist Training Program, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Brian C Evans
- 3Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
| | - Angel F Farinas
- 4Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Salam Al-Kassis
- 4Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Craig L Duvall
- 3Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
| | - Wesley P Thayer
- 3Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee.,4Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee
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5
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Ding S, Xu Y, Yan X, Lin Y, Tan Q. Effect of Collagen Scaffold With Bcl-2-Modified Adipose-Derived Stem Cells on Diabetic Mice Wound Healing. INT J LOW EXTR WOUND 2019; 19:139-147. [PMID: 31680592 DOI: 10.1177/1534734619880055] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
This study aimed at evaluating the effects of collagen scaffold with Bcl-2-modified adipose-derived stem cells (ADSCs) on wound repair in streptozotocin-induced diabetic mice. A round full thickness skin defect with a diameter of 7 mm was made in the mice model. The experimental mice were divided into 4 groups (n = 12 each): group A (control group), group B (scaffold group), group C (ADSCs-scaffold group), and group D (Bcl-2-ADSCs-scaffold group). On days 3, 7, 10, and 14 after surgery, characteristics of wound healing was observed, and wound tissues were sampled for histology characteristics via hematoxylin-eosin staining and immunohistochemical staining. Compared with other groups, the wound healing rate was significantly higher in group D a week after operation (P < .05). On the seventh day postoperation, group D exhibited higher blood vessel in the wounds granulation tissue than other groups according to results of hematoxylin-eosin staining and immunohistochemistry. In conclusion, these findings demonstrated that collagen scaffold with Bcl-2 modified ADSCs may effectively improve the wound healing process in diabetic mice.
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Affiliation(s)
- Sheng Ding
- Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, China.,Suzhou Hospital Affiliated to Nanjing Medical University, Suzhou, China
| | - Ye Xu
- Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, China
| | - Xin Yan
- Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, China
| | - Yue Lin
- Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, China
| | - Qian Tan
- Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, China
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6
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Agnol LD, Dias FTG, Nicoletti NF, Marinowic D, Moura E Silva S, Marcos-Fernandez A, Falavigna A, Bianchi O. Polyurethane tissue adhesives for annulus fibrosus repair: Mechanical restoration and cytotoxicity. J Biomater Appl 2019; 34:673-686. [PMID: 31354030 DOI: 10.1177/0885328219864901] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Lucas Dall Agnol
- 1 Health Sciences Graduate Program, University of Caxias do Sul (UCS), Caxias do Sul, RS, Brazil
| | | | | | - Daniel Marinowic
- 4 Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Sidnei Moura E Silva
- 1 Health Sciences Graduate Program, University of Caxias do Sul (UCS), Caxias do Sul, RS, Brazil.,5 Laboratory of Biotechnology of Natural and Synthetics Products, Technology Department, Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, RS, Brazil
| | | | - Asdrubal Falavigna
- 1 Health Sciences Graduate Program, University of Caxias do Sul (UCS), Caxias do Sul, RS, Brazil.,3 Cell Therapy Laboratory (LATEC), University of Caxias do Sul (UCS), Caxias do Sul, Brazil
| | - Otávio Bianchi
- 1 Health Sciences Graduate Program, University of Caxias do Sul (UCS), Caxias do Sul, RS, Brazil.,2 Materials Science Graduate Program (PGMAT), University of Caxias do Sul (UCS), Caxias do Sul, RS, Brazil.,7 Federal University of Rio Grande do Sul, Materials engineering department, Porto Alegre, Brazil
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7
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Hong KH, Song SC. 3D hydrogel stem cell niche controlled by host-guest interaction affects stem cell fate and survival rate. Biomaterials 2019; 218:119338. [PMID: 31310953 DOI: 10.1016/j.biomaterials.2019.119338] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/05/2019] [Accepted: 07/05/2019] [Indexed: 11/17/2022]
Abstract
Host-guest interaction using β-cyclodextrin (β-CD) and adamantane (Ad) allows facile modulation of guest molecule concentration in 3D hydrogels. Based on this phenomenon, we prepared a thermosensitive poly(organophosphazene) bearing β-CD hydrogel (β-CD PPZ, as host) and Ad-Arg-Gly-Asp (Ad-RGD, as guest). The structures of synthesized thermosensitive β-CD PPZ and Ad-RGD were confirmed by 1H NMR and FT-IR. The β-CD PPZ/Ad-RGD mixture was prepared by simple mixing and elicited thermosensitive properties with the formation of gelation in all Ad-RGDs mixing proportions at the body temperature. Strong and controlled host-guest interactions between β-CD PPZ and Ad-RGD were observed in 2D-NOESY, DLS, and TEM. Regulated MSC behaviors were elicited based on the use of controlled Ad-RGD amounts at the level of in vitro and in vivo. As the amount of Ad-RGD was increased in the β-CD PPZ hydrogel, MSC survival rate was enhanced and was prone to express osteogenic factors. While Ad-RGD is absent or low in hydrogel, relatively poor MSC survival rate and adipogenesis were exhibited. Altogether, we verified that survival rate and differentiation of MSCs could be controlled by host-guest interaction system with thermosensitive 3D hydrogel. This proposed 3D hydrogel controlling system with host-guest interaction is expected to be a platform technology as changing guest molecules.
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Affiliation(s)
- Ki Hyun Hong
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science & Technology, Seoul, 02792, Republic of Korea; Division of Bio-Medical Science and Technology, KIST School, Korea University of Science and Technology, Seoul, 02792, Republic of Korea
| | - Soo-Chang Song
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science & Technology, Seoul, 02792, Republic of Korea; Division of Bio-Medical Science and Technology, KIST School, Korea University of Science and Technology, Seoul, 02792, Republic of Korea.
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8
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Rezaie F, Momeni-Moghaddam M, Naderi-Meshkin H. Regeneration and Repair of Skin Wounds: Various Strategies for Treatment. INT J LOW EXTR WOUND 2019; 18:247-261. [PMID: 31257948 DOI: 10.1177/1534734619859214] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Skin as a mechanical barrier between the inner and outer environment of our body protects us against infection and electrolyte loss. This organ consists of 3 layers: the epidermis, dermis, and hypodermis. Any disruption in the integrity of skin leads to the formation of wounds, which are divided into 2 main categories: acute wounds and chronic wounds. Generally, acute wounds heal relatively faster. In contrast to acute wounds, closure of chronic wounds is delayed by 3 months after the initial insult. Treatment of chronic wounds has been one of the most challenging issues in the field of regenerative medicine, promoting scientists to develop various therapeutic strategies for a fast, qualified, and most cost-effective treatment modality. Here, we reviewed more recent approaches, including the development of stem cell therapy, tissue-engineered skin substitutes, and skin equivalents, for the healing of complex wounds.
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Affiliation(s)
- Fahimeh Rezaie
- Hakim Sabzevari University, Sabzevar, Iran.,Iranian Academic Center for Education, Culture Research (ACECR), Khorasan Razavi Branch, Mashhad, Iran
| | | | - Hojjat Naderi-Meshkin
- Iranian Academic Center for Education, Culture Research (ACECR), Khorasan Razavi Branch, Mashhad, Iran
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9
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Niu H, Ma Y, Wu G, Duan B, Wang Y, Yuan Y, Liu C. Multicellularity-interweaved bone regeneration of BMP-2-loaded scaffold with orchestrated kinetics of resorption and osteogenesis. Biomaterials 2019; 216:119216. [PMID: 31138454 DOI: 10.1016/j.biomaterials.2019.05.027] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 05/14/2019] [Accepted: 05/16/2019] [Indexed: 12/19/2022]
Abstract
Synchronization of material resorption and new bone formation is vital to achieve harmonious bone regeneration in the treatment of large bone defects. To exposit the resorption/osteogenesis properties in the guided bone repairing, rhBMP-2-loaded trimodal macro/micro/nano-porous bioactive glass scaffolds (TMS-rhBMP-2) were set as substrate model. We penetratingly investigated the particular function of hierarchical structure and incorporated rhBMP-2 in the resorption/osteogenesis, and dissected the cellular interplay throughout the regenerative procedure. The results suggested that rhBMP-2 significantly facilitated osteoclastogenesis-mediated scaffold degradation and strikingly up-regulated mesenchymal stem cells (MSCs)-involved osteogenesis in vitro. Further gene microarray and related proteins expression indicated that in the presence of rhBMP-2, MSCs rather than differentiated MSCs could exert synergistic effects on osteoclastogenesis, osteoclasts maturation and resorptive function; meanwhile, rhBMP-2-induced MSCs osteogenesis was also strengthened by the osteoclasts. In vivo micro-CT, X-ray, kinetic and histological analyses qualitatively and quantitively demonstrated the optimized coupling of bioresorption/osteogenesis and the most rapid regeneration in TMS-rhBMP-2. Consequently, with rhBMP-2 acted as ignitor and MSCs/osteoclasts interaction as booster, a harmonious bone regeneration was obtained. Besides, long-term magnetic resonance imaging (MRI) in virtue of Gd3+ suggested that the degradation products mainly distributed in liver and spleen, verifying the accumulation/discharge profiles and safety application of TMS-rhBMP-2 system in vivo. This study will not merely provide guidance for the design of clinical bone repairing materials, but shed substantial light on the multicell-mediated tissue regeneration.
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Affiliation(s)
- Haoyi Niu
- Engineering Research Center for Biomaterials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, PR China; Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Yifan Ma
- Engineering Research Center for Biomaterials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, PR China; Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Guangyu Wu
- Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200237, PR China
| | - Bing Duan
- Engineering Research Center for Biomaterials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, PR China; Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Ying Wang
- Engineering Research Center for Biomaterials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, PR China; Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Yuan Yuan
- Engineering Research Center for Biomaterials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, PR China; Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, PR China.
| | - Changsheng Liu
- Engineering Research Center for Biomaterials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, PR China; Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, PR China; The State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, PR China.
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10
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Abstract
INTRODUCTION Aberrant wound healing is a significant healthcare problem, posing a substantial burden on patients, their families, and the healthcare system. Existing treatment options remain only moderately effective and often fail to promote the closure of non-healing wounds in susceptible populations, such as aging and diabetic patients. Stem cell therapy has emerged as a promising treatment modality, with the potential to restore tissue to its pre-injured state. Of particular interest are mesenchymal stromal cells, which have been shown to accelerate wound healing by modulating the immune response and promoting angiogenesis. AREAS COVERED This review provides an overview of wound healing and current methods for the management of chronic wounds, as well as the current state and considerations for optimizing stem cell therapy. Considerations include stem cell types, tissue source, donor selection, cell heterogeneity, delivery methods, and genetic engineering. EXPERT OPINION A growing body of evidence has shown that delivery of stem cells, particularly mesenchymal stromal cells, has the potential to effectively improve the rate and quality of wound healing. However, significant additional basic and clinical research must be performed to optimize cell therapy, such as further elucidation of the therapeutic mechanisms of stem cells and standardization of clinical trial guidelines.
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Affiliation(s)
- Nina Kosaric
- a Hagey Laboratory for Pediatric Regenerative Medicine; Division of Plastic and Reconstructive Surgery, Department of Surgery , Stanford University School of Medicine , Stanford , CA , USA
| | - Harriet Kiwanuka
- a Hagey Laboratory for Pediatric Regenerative Medicine; Division of Plastic and Reconstructive Surgery, Department of Surgery , Stanford University School of Medicine , Stanford , CA , USA
| | - Geoffrey C Gurtner
- a Hagey Laboratory for Pediatric Regenerative Medicine; Division of Plastic and Reconstructive Surgery, Department of Surgery , Stanford University School of Medicine , Stanford , CA , USA
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11
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Ding SSL, Subbiah SK, Khan MSA, Farhana A, Mok PL. Empowering Mesenchymal Stem Cells for Ocular Degenerative Disorders. Int J Mol Sci 2019; 20:E1784. [PMID: 30974904 PMCID: PMC6480671 DOI: 10.3390/ijms20071784] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/13/2019] [Accepted: 03/13/2019] [Indexed: 12/24/2022] Open
Abstract
Multipotent mesenchymal stem cells (MSCs) have been employed in numerous pre-clinical and clinical settings for various diseases. MSCs have been used in treating degenerative disorders pertaining to the eye, for example, age-related macular degeneration, glaucoma, retinitis pigmentosa, diabetic retinopathy, and optic neuritis. Despite the known therapeutic role and mechanisms of MSCs, low cell precision towards the targeted area and cell survivability at tissue needing repair often resulted in a disparity in therapeutic outcomes. In this review, we will discuss the current and feasible strategy options to enhance treatment outcomes with MSC therapy. We will review the application of various types of biomaterials and advances in nanotechnology, which have been employed on MSCs to augment cellular function and differentiation for improving treatment of visual functions. In addition, several modes of gene delivery into MSCs and the types of associated therapeutic genes that are important for modulation of ocular tissue function and repair will be highlighted.
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Affiliation(s)
- Shirley Suet Lee Ding
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Suresh Kumar Subbiah
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Genetics and Regenerative Medicine Research Centre, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Mohammed Safwan Ali Khan
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M Health Science Center, Texas University, College Station, Texas 77843, USA.
| | - Aisha Farhana
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, P.O. Box 2014, Aljouf Province, Saudi Arabia.
| | - Pooi Ling Mok
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Genetics and Regenerative Medicine Research Centre, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, P.O. Box 2014, Aljouf Province, Saudi Arabia.
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12
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Electrospun Poly(p-dioxanone)/Poly(ester-urethane)ureas Composite Nanofibers for Potential Heart Valve Tissue Reconstruction. CHINESE JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1007/s10118-019-2231-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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McGough MAP, Shiels SM, Boller LA, Zienkiewicz KJ, Duvall CL, Wenke JC, Guelcher SA. Poly(Thioketal Urethane) Autograft Extenders in an Intertransverse Process Model of Bone Formation. Tissue Eng Part A 2019; 25:949-963. [PMID: 30398387 DOI: 10.1089/ten.tea.2018.0223] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
IMPACT STATEMENT The development of autograft extenders is a significant clinical need in bone tissue engineering. We report new settable poly(thioketal urethane)-based autograft extenders that have bone-like mechanical properties and handling properties comparable to calcium phosphate bone cements. These settable autograft extenders remodeled to form new bone in a biologically stringent intertransverse process model of bone formation that does not heal when treated with calcium phosphate bone void fillers or cements alone. This is the first study to report settable autograft extenders with bone-like strength and handling properties comparable to ceramic bone cements, which have the potential to improve treatment of bone fractures and other orthopedic conditions.
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Affiliation(s)
- Madison A P McGough
- 1Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee.,2Vanderbilt Center for Bone Biology, Vanderbilt University Medical Center, Nashville, Tennessee
| | | | - Lauren A Boller
- 1Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee.,2Vanderbilt Center for Bone Biology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Katarzyna J Zienkiewicz
- 4Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee
| | - Craig L Duvall
- 1Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
| | - Joseph C Wenke
- 3U.S. Army Institute of Surgical Research, Fort Sam Houston, Texas
| | - Scott A Guelcher
- 1Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee.,2Vanderbilt Center for Bone Biology, Vanderbilt University Medical Center, Nashville, Tennessee.,4Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee
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14
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Whitely M, Cereceres S, Dhavalikar P, Salhadar K, Wilems T, Smith B, Mikos A, Cosgriff-Hernandez E. Improved in situ seeding of 3D printed scaffolds using cell-releasing hydrogels. Biomaterials 2018; 185:194-204. [PMID: 30245387 DOI: 10.1016/j.biomaterials.2018.09.027] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 09/11/2018] [Accepted: 09/16/2018] [Indexed: 12/31/2022]
Abstract
The design of tissue engineered scaffolds based on polymerized high internal phase emulsions (polyHIPEs) has emerged as a promising bone grafting strategy. We previously reported the ability to 3D print emulsion inks to better mimic the structure and mechanical properties of native bone while precisely matching defect geometry. In the current study, redox-initiated hydrogel carriers were investigated for in situ delivery of human mesenchymal stem cells (hMSCs) utilizing the biodegradable macromer, poly(ethylene glycol)-dithiothreitol. Hydrogel carrier properties including network formation time, sol-gel fraction, and swelling ratio were modulated to achieve rapid cure without external stimuli and a target cell-release period of 5-7 days. These in situ carriers enabled improved distribution of hMSCs in 3D printed polyHIPE grafts over standard suspension seeding. Additionally, carrier-loaded polyHIPEs supported sustained cell viability and osteogenic differentiation of hMSCs post-release. In summary, these findings demonstrate the potential of this in situ curing hydrogel carrier to enhance the cell distribution and retention of hMSCs in bone grafts. Although initially focused on improving bone regeneration, the ability to encapsulate cells in a hydrogel carrier without relying on external stimuli that can be attenuated in large grafts or tissues is expected to have a wide range of applications in tissue engineering.
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Affiliation(s)
- Michael Whitely
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA.
| | - Stacy Cereceres
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA.
| | - Prachi Dhavalikar
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA.
| | - Karim Salhadar
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA.
| | - Thomas Wilems
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA.
| | - Brandon Smith
- Department of Bioengineering, Rice University, Houston, TX, 77005, USA.
| | - Antonios Mikos
- Department of Bioengineering, Rice University, Houston, TX, 77005, USA.
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15
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Zhu Q, Li X, Fan Z, Xu Y, Niu H, Li C, Dang Y, Huang Z, Wang Y, Guan J. Biomimetic polyurethane/TiO 2 nanocomposite scaffolds capable of promoting biomineralization and mesenchymal stem cell proliferation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 85:79-87. [PMID: 29407160 PMCID: PMC5805475 DOI: 10.1016/j.msec.2017.12.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 08/24/2017] [Accepted: 12/07/2017] [Indexed: 12/24/2022]
Abstract
Scaffolds with extracellular matrix-like fibrous morphology, suitable mechanical properties, biomineralization capability, and excellent cytocompatibility are desired for bone regeneration. In this work, fibrous and degradable poly(ester urethane)urea (PEUU) scaffolds reinforced with titanium dioxide nanoparticles (nTiO2) were fabricated to possess these properties. To increase the interfacial interaction between PEUU and nTiO2, poly(ester urethane) (PEU) was grafted onto the nTiO2. The scaffolds were fabricated by electrospinning and exhibited fiber diameter of <1μm. SEM and EDX mapping results demonstrated that the PEU modified nTiO2 was homogeneously distributed in the fibers. In contrast, severe agglomeration was found in the scaffolds with unmodified nTiO2. PEU modified nTiO2 significantly increased Young's modulus and tensile stress of the PEUU scaffolds while unmodified nTiO2 significantly decreased Young's modulus and tensile stress. The greatest reinforcement effect was observed for the scaffold with 1:1 ratio of PEUU and PEU modified nTiO2. When incubating in the simulated body fluid over an 8-week period, biomineralization was occurred on the fibers. The scaffolds with PEU modified nTiO2 showed the highest Ca and P deposition than pure PEUU scaffold and PEUU scaffold with unmodified nTiO2. To examine scaffold cytocompatibility, bone marrow-derived mesenchymal stem cells were cultured on the scaffold. The PEUU scaffold with PEU modified nTiO2 demonstrated significantly higher cell proliferation compared to pure PEUU scaffold and PEUU scaffold with unmodified nTiO2. The above results demonstrate that the developed fibrous nanocomposite scaffolds have potential for bone tissue regeneration.
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Affiliation(s)
- Qingxia Zhu
- Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA; Department of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jiangxi 333001, China
| | - Xiaofei Li
- Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA
| | - Zhaobo Fan
- Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA
| | - Yanyi Xu
- Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA
| | - Hong Niu
- Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA
| | - Chao Li
- Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA
| | - Yu Dang
- Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA
| | - Zheng Huang
- Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA
| | - Yun Wang
- Division of Periodontology, The Ohio State University, 305 W. 12th Avenue, Columbus, OH 43210, USA
| | - Jianjun Guan
- Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA.
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16
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Abstract
Angiogenesis plays an important role not only in the growth and regeneration of tissues in humans but also in pathological conditions such as inflammation, degenerative disease and the formation of tumors. Angiogenesis is also vital in thick engineered tissues and constructs, such as those for the heart and bone, as these can face difficulties in successful implantation if they are insufficiently vascularized or unable to connect to the host vasculature. Considerable research has been carried out on angiogenic processes using a variety of approaches. Pathological angiogenesis has been analyzed at the cellular level through investigation of cell migration and interactions, modeling tissue level interactions between engineered blood vessels and whole organs, and elucidating signaling pathways involved in different angiogenic stimuli. Approaches to regenerative angiogenesis in ischemic tissues or wound repair focus on the vascularization of tissues, which can be broadly classified into two categories: scaffolds to direct and facilitate tissue growth and targeted delivery of genes, cells, growth factors or drugs that promote the regeneration. With technological advancement, models have been designed and fabricated to recapitulate the innate microenvironment. Moreover, engineered constructs provide not only a scaffold for tissue ingrowth but a reservoir of agents that can be controllably released for therapeutic purposes. This review summarizes the current approaches for modeling pathological and regenerative angiogenesis in the context of micro-/nanotechnology and seeks to bridge these two seemingly distant aspects of angiogenesis. The ultimate aim is to provide insights and advances from various models in the realm of angiogenesis studies that can be applied to clinical situations.
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Affiliation(s)
- Li-Jiun Chen
- Department of Finemechanics, Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki, Aoba-ku, Sendai 980-8579, Japan.
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17
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Su T, Liu Y, He H, Li J, Lv Y, Zhang L, Sun Y, Hu C. Strong Bioinspired Polymer Hydrogel with Tunable Stiffness and Toughness for Mimicking the Extracellular Matrix. ACS Macro Lett 2016; 5:1217-1221. [PMID: 35614748 DOI: 10.1021/acsmacrolett.6b00702] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Inspired by the delicate architecture of hyaline articular cartilage, we report on a biomimetic polymer hydrogel that incorporates strong intermolecular hydrogen bonding between urethane-urethane linkages as well as urethane-ester linkages. The resultant hydrogel, containing ≈75% water, can endure a compressive stress up to 56 MPa with a strain of 98%, and exhibit tunable compressive modulus (0.19-1.38 MPa), as well as toughness (3629-28290 J m-2) within a wide range. The tensile strength and elastic modulus reach as high as 0.56 and 5.5 MPa, respectively. The high stiffness and toughness enable the gel to withstand cyclic compressive loadings without fracturing. Moreover, our hydrogel mimics the extracellular matrices of cartilage and bone tissues and provides biochemical and physical cues that support the three-dimensional proliferation of chondrocytes and osteogenic differentiation of preosteoblasts.
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Affiliation(s)
- Teng Su
- Department
of Chemistry, Advanced Research Institute, Tongji University, Shanghai 200092, China
- Joint
Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, North Carolina 27695-7115, United States
| | - Yi Liu
- Shanghai
Engineering Research Center of Tooth Restoration and Regeneration,
School of Stomatology, Laboratory of Oral Biomedical Science and Translational
Medicine, Tongji University, Shanghai 200072, China
| | - Hongjian He
- Department
of Chemistry, Advanced Research Institute, Tongji University, Shanghai 200092, China
| | - Jia Li
- Shanghai
Engineering Research Center of Tooth Restoration and Regeneration,
School of Stomatology, Laboratory of Oral Biomedical Science and Translational
Medicine, Tongji University, Shanghai 200072, China
| | - Yanan Lv
- Department
of Chemistry, Advanced Research Institute, Tongji University, Shanghai 200092, China
| | - Lili Zhang
- Shanghai
Engineering Research Center of Tooth Restoration and Regeneration,
School of Stomatology, Laboratory of Oral Biomedical Science and Translational
Medicine, Tongji University, Shanghai 200072, China
| | - Yao Sun
- Shanghai
Engineering Research Center of Tooth Restoration and Regeneration,
School of Stomatology, Laboratory of Oral Biomedical Science and Translational
Medicine, Tongji University, Shanghai 200072, China
| | - Chunpu Hu
- Key
Laboratory for Ultrafine Materials of Ministry of Education, School
of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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18
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McEnery MAP, Lu S, Gupta MK, Zienkiewicz KJ, Wenke JC, Kalpakci KN, Shimko D, Duvall CL, Guelcher SA. Oxidatively Degradable Poly(thioketal urethane)/Ceramic Composite Bone Cements with Bone-Like Strength. RSC Adv 2016; 6:109414-109424. [PMID: 27895899 PMCID: PMC5123593 DOI: 10.1039/c6ra24642g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Synthetic bone cements are commonly used in orthopaedic procedures to aid in bone regeneration following trauma or disease. Polymeric cements like PMMA provide the mechanical strength necessary for orthopaedic applications, but they are not resorbable and do not integrate with host bone. Ceramic cements have a chemical composition similar to that of bone, but their brittle mechanical properties limit their use in weight-bearing applications. In this study, we designed oxidatively degradable, polymeric bone cements with mechanical properties suitable for bone tissue engineering applications. We synthesized a novel thioketal (TK) diol, which was crosslinked with a lysine triisocyanate (LTI) prepolymer to create hydrolytically stable poly(thioketal urethane)s (PTKUR) that degrade in the oxidative environment associated with bone defects. PTKUR films were hydrolytically stable for up to 6 months, but degraded rapidly (<1 week) under simulated oxidative conditions in vitro. When combined with ceramic micro- or nanoparticles, PTKUR cements exhibited working times comparable to calcium phosphate cements and strengths exceeding those of trabecular bone. PTKUR/ceramic composite cements supported appositional bone growth and integrated with host bone near the bone-cement interface at 6 and 12 weeks post-implantation in rabbit femoral condyle plug defects. Histological evidence of osteoclast-mediated resorption of the cements was observed at 6 and 12 weeks. These findings demonstrate that a PTKUR bone cement with bone-like strength can be selectively resorbed by cells involved in bone remodeling, and thus represent an important initial step toward the development of resorbable bone cements for weight-bearing applications.
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Affiliation(s)
- Madison A P McEnery
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Sichang Lu
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA
| | - Mukesh K Gupta
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Katarzyna J Zienkiewicz
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA
| | - Joseph C Wenke
- U.S. Army Institute of Surgical Research, San Antonio, TX, USA
| | | | | | - Craig L Duvall
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Scott A Guelcher
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA; Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA; Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN
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19
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Martin JR, Nelson CE, Gupta MK, Yu F, Sarett SM, Hocking KM, Pollins AC, Nanney LB, Davidson JM, Guelcher SA, Duvall CL. Local Delivery of PHD2 siRNA from ROS-Degradable Scaffolds to Promote Diabetic Wound Healing. Adv Healthc Mater 2016; 5:2751-2757. [PMID: 27717176 PMCID: PMC5152672 DOI: 10.1002/adhm.201600820] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Indexed: 12/19/2022]
Abstract
Small interfering RNA (siRNA) delivered from reactive oxygen species-degradable tissue engineering scaffolds promotes diabetic wound healing in rats. Porous poly(thioketal-urethane) scaffolds implanted in diabetic wounds locally deliver siRNA that inhibits the expression of prolyl hydroxylase domain protein 2, thereby increasing the expression of progrowth genes and increasing vasculature, proliferating cells, and tissue development in diabetic wounds.
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Affiliation(s)
- John R. Martin
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Christopher E. Nelson
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Mukesh K. Gupta
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Fang Yu
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Samantha M. Sarett
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Kyle M. Hocking
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Alonda C. Pollins
- Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Lillian B. Nanney
- Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Jeffrey M. Davidson
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232, USA. Medical Research Service, Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN 37212, USA
| | - Scott A. Guelcher
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Craig L. Duvall
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
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20
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Tissue-engineered 3D cancer-in-bone modeling: silk and PUR protocols. BONEKEY REPORTS 2016; 5:842. [PMID: 27790370 DOI: 10.1038/bonekey.2016.75] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 09/06/2016] [Indexed: 12/11/2022]
Abstract
Cancers that metastasize or grow in the bone marrow are typically considered incurable and cause extensive damage to the bone and bone marrow. The bone is a complex, dynamic, three-dimensional (3D) environment composed of a plethora of cells that may contribute to, or constrain, the growth of tumor cells and development of bone disease. The development of safe and effective drugs is currently hampered by pre-clinical two-dimensional (2D) models whose poor predictive power does not accurately predict the success or failure of therapeutics. These inadequate models often result in drugs proceeding through extensive pre-clinical studies only to fail clinically. Consistently, 3D co-culture systems prove superior to 2D mono-cultures in modeling in vivo cell phenotypes, disease progression and response to therapeutics. As a complex, multicellular, multidimensional bone microenvironment, 3D models allow for more accurate predictions of tumor growth, cell-cell and cell-matrix interactions, and resulting therapeutic responses. In this review we will discuss various 3D models available and describe step-by-step protocols for two of the most well-established 3D culture models for studying tumor-induced bone disease.
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21
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Marquardt LM, Heilshorn SC. Design of Injectable Materials to Improve Stem Cell Transplantation. CURRENT STEM CELL REPORTS 2016; 2:207-220. [PMID: 28868235 PMCID: PMC5576562 DOI: 10.1007/s40778-016-0058-0] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Stem cell-based therapies are steadily gaining traction for regenerative medicine approaches to treating disease and injury throughout the body. While a significant body of work has shown success in preclinical studies, results often fail to translate in clinical settings. One potential cause is the massive transplanted cell death that occurs post injection, preventing functional integration with host tissue. Therefore, current research is focusing on developing injectable hydrogel materials to protect cells during delivery and to stimulate endogenous regeneration through interactions of transplanted cells and host tissue. This review explores the design of targeted injectable hydrogel systems for improving the therapeutic potential of stem cells across a variety of tissue engineering applications with a focus on hydrogel materials that have progressed to the stage of preclinical testing.
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Affiliation(s)
- Laura M Marquardt
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305
| | - Sarah C Heilshorn
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305
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22
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Abstract
Bone metastatic disease remains a significant and frequent problem for cancer patients that can lead to increased morbidity and mortality. Unfortunately, despite decades of research, bone metastases remain incurable. Current studies have demonstrated that many properties and cell types within the bone and bone marrow microenvironment contribute to tumor-induced bone disease. Furthermore, they have pointed to the importance of understanding how tumor cells interact with their microenvironment in order to help improve both the development of new therapeutics and the prediction of response to therapy.
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Affiliation(s)
- Denise Buenrostro
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN 37212, USA
- Center for Bone Biology, Vanderbilt University, 2215B Garland Avenue, 1235 MRBIV, Nashville, TN 37232, USA
- Department of Cancer Biology, Vanderbilt University, Nashville, TN 37232, USA
| | - Patrick L. Mulcrone
- Center for Bone Biology, Vanderbilt University, 2215B Garland Avenue, 1235 MRBIV, Nashville, TN 37232, USA
- Department of Cancer Biology, Vanderbilt University, Nashville, TN 37232, USA
| | - Philip Owens
- Department of Cancer Biology, Vanderbilt University, Nashville, TN 37232, USA
| | - Julie A. Sterling
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN 37212, USA
- Center for Bone Biology, Vanderbilt University, 2215B Garland Avenue, 1235 MRBIV, Nashville, TN 37232, USA
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University, 2215B Garland Avenue, 1235 MRBIV, Nashville, TN 37232, USA
- Department of Cancer Biology, Vanderbilt University, Nashville, TN 37232, USA
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23
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Premise and promise of mesenchymal stem cell-based therapies in clinical vascularized composite allotransplantation. Curr Opin Organ Transplant 2016; 20:608-14. [PMID: 26536421 DOI: 10.1097/mot.0000000000000247] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
PURPOSE OF REVIEW Over the past decade, clinical vascularized composite allotransplantation (VCA) has enabled functional and quality of life restoration in a wide range of indications secondary to devastating tissue loss. However, the spectre of toxicity and long-term complications of chronic immunosuppression has curtailed the momentum of VCA. This study summarizes the literature evidence behind successful mesenchymal stem cell (MSC)-based cell therapies highlighting their multipronged immunomodulatory, restorative and regenerative characteristics with special emphasis towards VCA applications. RECENT FINDINGS Experimental and clinical studies in solid organs and VCA have confirmed that MSCs facilitate immunosuppression-free allograft survival or tolerance, stimulate peripheral nerve regeneration, attenuate ischaemia-reperfusion injury, and improve tissue healing after surgery. It has been hypothesized that MSC-induced long-term operational tolerance in experimental VCA is mediated by induction of mixed donor-specific chimerism and regulatory T-cell mechanisms. All these characteristics of MSCs could thus help expand the scope and clinical feasibility of VCA. SUMMARY Cellular therapies, especially those focusing on MSCs, are emerging in solid organ transplantation including VCA. Although some clinical trials have begun to assess the effects of MSCs in solid organ transplantation, much scientific domain remains uncharted, especially for VCA.
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