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Sung ZY, Liao YQ, Hou JH, Lai HH, Weng SM, Jao HW, Lu BJ, Chen CH. Advancements in fertility preservation strategies for pediatric male cancer patients: a review of cryopreservation and transplantation of immature testicular tissue. Reprod Biol Endocrinol 2024; 22:47. [PMID: 38637872 PMCID: PMC11025181 DOI: 10.1186/s12958-024-01219-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 04/06/2024] [Indexed: 04/20/2024] Open
Abstract
Recently, there has been increasing emphasis on the gonadotoxic effects of cancer therapy in prepubertal boys. As advances in oncology treatments continue to enhance survival rates for prepubertal boys, the need for preserving their functional testicular tissue for future reproduction becomes increasingly vital. Therefore, we explore cutting-edge strategies in fertility preservation, focusing on the cryopreservation and transplantation of immature testicular tissue as a promising avenue. The evolution of cryopreservation techniques, from controlled slow freezing to more recent advancements in vitrification, with an assessment of their strengths and limitations was exhibited. Detailed analysis of cryoprotectants, exposure times, and protocols underscores their impact on immature testicular tissue viability. In transplantation strategy, studies have revealed that the scrotal site may be the preferred location for immature testicular tissue grafting in both autotransplantation and xenotransplantation scenarios. Moreover, the use of biomaterial scaffolds during graft transplantation has shown promise in enhancing graft survival and stimulating spermatogenesis in immature testicular tissue over time. This comprehensive review provides a holistic approach to optimize the preservation strategy of human immature testicular tissue in the future.
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Affiliation(s)
- Zih-Yi Sung
- School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
| | - Yong-Qi Liao
- School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
| | - Jung-Hsiu Hou
- Graduate Institute of Medical Science, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan, ROC
| | - Hong-Hsien Lai
- School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
| | - Sung-Ming Weng
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
| | - Hai-Wei Jao
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan, ROC
| | - Buo-Jia Lu
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan, ROC
| | - Chi-Huang Chen
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan, ROC.
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC.
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Omidian H, Chowdhury SD, Wilson RL. Advancements and Challenges in Hydrogel Engineering for Regenerative Medicine. Gels 2024; 10:238. [PMID: 38667657 PMCID: PMC11049258 DOI: 10.3390/gels10040238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/21/2024] [Accepted: 03/28/2024] [Indexed: 04/28/2024] Open
Abstract
This manuscript covers the latest advancements and persisting challenges in the domain of tissue engineering, with a focus on the development and engineering of hydrogel scaffolds. It highlights the critical role of these scaffolds in emulating the native tissue environment, thereby providing a supportive matrix for cell growth, tissue integration, and reducing adverse reactions. Despite significant progress, this manuscript emphasizes the ongoing struggle to achieve an optimal balance between biocompatibility, biodegradability, and mechanical stability, crucial for clinical success. It also explores the integration of cutting-edge technologies like 3D bioprinting and biofabrication in constructing complex tissue structures, alongside innovative materials and techniques aimed at enhancing tissue growth and functionality. Through a detailed examination of these efforts, the manuscript sheds light on the potential of hydrogels in advancing regenerative medicine and the necessity for multidisciplinary collaboration to navigate the challenges ahead.
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Affiliation(s)
- Hossein Omidian
- Barry and Judy Silverman College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL 33328, USA; (S.D.C.); (R.L.W.)
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Zhang Y, Tang Q, Zhou J, Zhao C, Li J, Wang H. Conductive and Eco-friendly Biomaterials-based Hydrogels for Noninvasive Epidermal Sensors: A Review. ACS Biomater Sci Eng 2024; 10:191-218. [PMID: 38052003 DOI: 10.1021/acsbiomaterials.3c01003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
As noninvasive wearable electronic devices, epidermal sensors enable continuous, real-time, and remote monitoring of various human physiological parameters. Conductive biomaterials-based hydrogels as sensor matrix materials have good biocompatibility, biodegradability, and efficient stimulus response capabilities and are widely applied in motion monitoring, healthcare, and human-machine interaction. However, biomass hydrogel-based epidermal sensing devices still need excellent mechanical properties, prolonged stability, multifunctionality, and extensive practicality. Therefore, this paper reviews the common biomass hydrogel materials for epidermal sensing (proteins, polysaccharides, polyphenols, etc.) and the various types of noninvasive sensing devices (strain/pressure sensors, temperature sensors, glucose sensors, electrocardiograms, etc.). Moreover, this review focuses on the strategies of scholars to enhance sensor properties, such as strength, conductivity, stability, adhesion, and self-healing ability. This work will guide the preparation and optimization of high-performance biomaterials-based hydrogel epidermal sensors.
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Affiliation(s)
- Yibo Zhang
- School of Information Science and Technology, Qingdao University of Science and Technology, Qingdao 266061, China
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, P. R. China
| | - Qianhui Tang
- School of Marine Technology and Environment, Dalian Ocean University, 52 Heishijiao Street, Dalian, Liaoning 116023, P. R. China
| | - Junyang Zhou
- School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Chenghao Zhao
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, P. R. China
| | - Jingpeng Li
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, P. R. China
| | - Haiting Wang
- School of Information Science and Technology, Qingdao University of Science and Technology, Qingdao 266061, China
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Marques-Almeida T, Lanceros-Mendez S, Ribeiro C. State of the Art and Current Challenges on Electroactive Biomaterials and Strategies for Neural Tissue Regeneration. Adv Healthc Mater 2024; 13:e2301494. [PMID: 37843074 DOI: 10.1002/adhm.202301494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 09/22/2023] [Indexed: 10/17/2023]
Abstract
The loss or failure of an organ/tissue stands as one of the healthcare system's most prevalent, devastating, and costly challenges. Strategies for neural tissue repair and regeneration have received significant attention due to their particularly strong impact on patients' well-being. Many research efforts are dedicated not only to control the disease symptoms but also to find solutions to repair the damaged tissues. Neural tissue engineering (TE) plays a key role in addressing this problem and significant efforts are being carried out to develop strategies for neural repair treatment. In the last years, active materials allowing to tune cell-materials interaction are being increasingly used, representing a recent paradigm in TE applications. Among the most important stimuli influencing cell behavior are the electrical and mechanical ones. In this way, materials with the ability to provide this kind of stimuli to the neural cells seem to be appropriate to support neural TE. In this scope, this review summarizes the different biomaterials types used for neural TE, highlighting the relevance of using active biomaterials and electrical stimulation. Furthermore, this review provides not only a compilation of the most relevant studies and results but also strategies for novel and more biomimetic approaches for neural TE.
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Affiliation(s)
- Teresa Marques-Almeida
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Braga, 4710-057, Portugal
- LaPMET - Laboratory of Physics for Materials and Emergent Technologies, University of Minho, Braga, 4710-057, Portugal
| | - Senentxu Lanceros-Mendez
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Braga, 4710-057, Portugal
- LaPMET - Laboratory of Physics for Materials and Emergent Technologies, University of Minho, Braga, 4710-057, Portugal
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, Leioa, 48940, Spain
- IKERBASQUE, Basque Foundation for Science, Bilbao, 48009, Spain
| | - Clarisse Ribeiro
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Braga, 4710-057, Portugal
- LaPMET - Laboratory of Physics for Materials and Emergent Technologies, University of Minho, Braga, 4710-057, Portugal
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Bose S, Phan CM, Rizwan M, Tse JW, Yim E, Jones L. Fabrication and Characterization of an Enzyme-Triggered, Therapeutic-Releasing Hydrogel Bandage Contact Lens Material. Pharmaceutics 2023; 16:26. [PMID: 38258038 PMCID: PMC10819205 DOI: 10.3390/pharmaceutics16010026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 01/24/2024] Open
Abstract
PURPOSE The purpose of this study was to develop an enzyme-triggered, therapeutic-releasing bandage contact lens material using a unique gelatin methacrylate formulation (GelMA+). METHODS Two GelMA+ formulations, 20% w/v, and 30% w/v concentrations, were prepared through UV polymerization. The physical properties of the material, including porosity, tensile strain, and swelling ratio, were characterized. The enzymatic degradation of the material was assessed in the presence of matrix metalloproteinase-9 (MMP-9) at concentrations ranging from 0 to 300 µg/mL. Cell viability, cell growth, and cytotoxicity on the GelMA+ gels were evaluated using the AlamarBlueTM assay and the LIVE/DEADTM Viability/Cytotoxicity kit staining with immortalized human corneal epithelial cells over 5 days. For drug release analysis, the 30% w/v gels were loaded with 3 µg of bovine lactoferrin (BLF) as a model drug, and its release was examined over 5 days under various MMP-9 concentrations. RESULTS The 30% w/v GelMA+ demonstrated higher crosslinking density, increased tensile strength, smaller pore size, and lower swelling ratio (p < 0.05). In contrast, the 20% w/v GelMA+ degraded at a significantly faster rate (p < 0.001), reaching almost complete degradation within 48 h in the presence of 300 µg/mL of MMP-9. No signs of cytotoxic effects were observed in the live/dead staining assay for either concentration after 5 days. However, the 30% w/v GelMA+ exhibited significantly higher cell viability (p < 0.05). The 30% w/v GelMA+ demonstrated sustained release of the BLF over 5 days. The release rate of BLF increased significantly with higher concentrations of MMP-9 (p < 0.001), corresponding to the degradation rate of the gels. DISCUSSION The release of BLF from GelMA+ gels was driven by a combination of diffusion and degradation of the material by MMP-9 enzymes. This work demonstrated that a GelMA+-based material that releases a therapeutic agent can be triggered by enzymes found in the tear fluid.
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Affiliation(s)
- Susmita Bose
- Centre for Ocular Research & Education (CORE), School of Optometry and Vision Science, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; (S.B.); (L.J.)
| | - Chau-Minh Phan
- Centre for Ocular Research & Education (CORE), School of Optometry and Vision Science, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; (S.B.); (L.J.)
- Centre for Eye and Vision Research (CEVR), 17W Hong Kong Science Park, Hong Kong, China
| | - Muhammad Rizwan
- Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; (M.R.); (J.W.T.); (E.Y.)
| | - John Waylon Tse
- Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; (M.R.); (J.W.T.); (E.Y.)
| | - Evelyn Yim
- Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; (M.R.); (J.W.T.); (E.Y.)
| | - Lyndon Jones
- Centre for Ocular Research & Education (CORE), School of Optometry and Vision Science, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; (S.B.); (L.J.)
- Centre for Eye and Vision Research (CEVR), 17W Hong Kong Science Park, Hong Kong, China
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Pai AC, Swatek AM, Lynch TJ, Ahlers BA, Ievlev V, Engelhardt JF, Parekh KR. Orthotopic Ferret Tracheal Transplantation Using a Recellularized Bioengineered Graft Produces Functional Epithelia. Bioengineering (Basel) 2023; 10:777. [PMID: 37508804 PMCID: PMC10376427 DOI: 10.3390/bioengineering10070777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/22/2023] [Accepted: 06/28/2023] [Indexed: 07/30/2023] Open
Abstract
Tracheal grafts may be necessary to bridge long-segment defects after curative resection for airway obstructions. Bioengineered grafts have emerged as an appealing option, given the possibilities of altering the histologic and cellular profile of the conduit. We previously designed a bioreactor capable of luminally decellularizing and recellularizing a ferret trachea with surface airway epithelia (SAE) basal cells (BCs), and we sought to assess the fate of these grafts when transplanted in an orthotopic fashion. As adjuncts to the procedure, we investigated the use of a vascular endothelial growth factor (VEGF)-laden hydrogel and of immunosuppression (IS) in graft revascularization and viability. IS was shown to limit early graft revascularization, but this effect could be counteracted with VEGF supplementation. Submucosal gland (SMG) loss was shown to be inevitable regardless of the revascularization strategy. Lastly, the bioengineered tracheas survived one month after transplant with differentiation of our implanted BCs that then transitioned into a recipient-derived functional epithelium. The work presented in this manuscript has important implications for future cellular and regenerative therapies.
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Affiliation(s)
- Albert C. Pai
- Department of Cardiothoracic Surgery, University of Iowa Hospitals and Clinics, Iowa City, IA 52242, USA; (A.C.P.); (A.M.S.)
| | - Anthony M. Swatek
- Department of Cardiothoracic Surgery, University of Iowa Hospitals and Clinics, Iowa City, IA 52242, USA; (A.C.P.); (A.M.S.)
| | - Thomas J. Lynch
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, IA 52242, USA; (T.J.L.); (B.A.A.); (V.I.); (J.F.E.)
| | - Bethany A. Ahlers
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, IA 52242, USA; (T.J.L.); (B.A.A.); (V.I.); (J.F.E.)
| | - Vitaly Ievlev
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, IA 52242, USA; (T.J.L.); (B.A.A.); (V.I.); (J.F.E.)
| | - John F. Engelhardt
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, IA 52242, USA; (T.J.L.); (B.A.A.); (V.I.); (J.F.E.)
| | - Kalpaj R. Parekh
- Department of Cardiothoracic Surgery, University of Iowa Hospitals and Clinics, Iowa City, IA 52242, USA; (A.C.P.); (A.M.S.)
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Hu Y, Yu B, Jia Y, Lei M, Li Z, Liu H, Huang H, Xu F, Li J, Wei Z. Hyaluronate- and Gelatin-based Hydrogels Encapsulating Doxycycline as a Wound Dressing for Burn Injury Therapy. Acta Biomater 2023; 164:151-158. [PMID: 37088160 DOI: 10.1016/j.actbio.2023.04.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 04/11/2023] [Accepted: 04/13/2023] [Indexed: 04/25/2023]
Abstract
Infection is a critical challenge in burn wound therapy. Wound dressings with antibacterial and multifunctional abilities associated with rapid burn wound healing are urgently needed. Here, we developed a bioadhesive and injectable ECM-mimicking hydrogel dressing with antibacterial capacity for burn injury therapy, which is crosslinked by dynamic boronate ester bonds between modified hyaluronate and gelatin (HG). The antibiotic doxycycline (Doxy) was encapsulated in HG networks for drug delivery around the wound sites. The HG/Doxy hydrogel dressing shows biocompatibility and antibacterial activity against Gram-positive and Gram-negative bacteria. Applying to a rat model of burn wound, the HG/Doxy hydrogel significantly speeds up wound closure by reducing the inflammatory reaction. Furthermore, the HG/Doxy hydrogel accelerates the regeneration of the skin structure by promoting collagen deposition, blood vessel regeneration, and hair follicle formation, eventually shortening the healing periods of burn wounds. These findings demonstrated the clinical potential of the HG/Doxy hydrogels as a promising burn wound dressing.
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Affiliation(s)
- Yan Hu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Bangrui Yu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Yuanbo Jia
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Meng Lei
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Zhijie Li
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Hao Liu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Haishui Huang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Feng Xu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Jing Li
- Department of Burns and Plastic Surgery, Second Affiliated Hospital of Air Force Military Medical University, Xi'an 710038, PR China.
| | - Zhao Wei
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China.
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Ng WC, Lokanathan Y, Baki MM, Fauzi MB, Zainuddin AA, Azman M. Tissue Engineering as a Promising Treatment for Glottic Insufficiency: A Review on Biomolecules and Cell-Laden Hydrogel. Biomedicines 2022; 10:biomedicines10123082. [PMID: 36551838 PMCID: PMC9775346 DOI: 10.3390/biomedicines10123082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/11/2022] [Accepted: 11/16/2022] [Indexed: 12/03/2022] Open
Abstract
Glottic insufficiency is widespread in the elderly population and occurs as a result of secondary damage or systemic disease. Tissue engineering is a viable treatment for glottic insufficiency since it aims to restore damaged nerve tissue and revitalize aging muscle. After injection into the biological system, injectable biomaterial delivers cost- and time-effectiveness while acting as a protective shield for cells and biomolecules. This article focuses on injectable biomaterials that transport cells and biomolecules in regenerated tissue, particularly adipose, muscle, and nerve tissue. We propose Wharton's Jelly mesenchymal stem cells (WJMSCs), induced pluripotent stem cells (IP-SCs), basic fibroblast growth factor (bFGF), vascular endothelial growth factor (VEGF), hepatocyte growth factor (HGF), insulin growth factor-1 (IGF-1) and extracellular vesicle (EV) as potential cells and macromolecules to be included into biomaterials, with some particular testing to support them as a promising translational medicine for vocal fold regeneration.
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Affiliation(s)
- Wan-Chiew Ng
- Department of Otorhinolaryngology-Head and Neck Surgery, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia
| | - Yogeswaran Lokanathan
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia
| | - Marina Mat Baki
- Department of Otorhinolaryngology-Head and Neck Surgery, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia
| | - Mh Busra Fauzi
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia
| | - Ani Amelia Zainuddin
- Department of Obstetrics and Gynaecology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia
| | - Mawaddah Azman
- Department of Otorhinolaryngology-Head and Neck Surgery, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia
- Correspondence:
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Efficacy of Nerve-Derived Hydrogels to Promote Axon Regeneration Is Influenced by the Method of Tissue Decellularization. Int J Mol Sci 2022; 23:ijms23158746. [PMID: 35955880 PMCID: PMC9369339 DOI: 10.3390/ijms23158746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/01/2022] [Accepted: 08/05/2022] [Indexed: 11/30/2022] Open
Abstract
Injuries to large peripheral nerves are often associated with tissue defects and require reconstruction using autologous nerve grafts, which have limited availability and result in donor site morbidity. Peripheral nerve-derived hydrogels could potentially supplement or even replace these grafts. In this study, three decellularization protocols based on the ionic detergents sodium dodecyl sulfate (P1) and sodium deoxycholate (P2), or the organic solvent tri-n-butyl phosphate (P3), were used to prepare hydrogels. All protocols resulted in significantly decreased amounts of genomic DNA, but the P2 hydrogel showed the best preservation of extracellular matrix proteins, cytokines, and chemokines, and reduced levels of sulfated glycosaminoglycans. In vitro P1 and P2 hydrogels supported Schwann cell viability, secretion of VEGF, and neurite outgrowth. Surgical repair of a 10 mm-long rat sciatic nerve gap was performed by implantation of tubular polycaprolactone conduits filled with hydrogels followed by analyses using diffusion tensor imaging and immunostaining for neuronal and glial markers. The results demonstrated that the P2 hydrogel considerably increased the number of axons and the distance of regeneration into the distal nerve stump. In summary, the method used to decellularize nerve tissue affects the efficacy of the resulting hydrogels to support regeneration after nerve injury.
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Camponogara F, Zanotti F, Trentini M, Tiengo E, Zanolla I, Pishavar E, Soliani E, Scatto M, Gargiulo P, Zambito Y, De Luca S, Ferroni L, Zavan B. Biomaterials for Regenerative Medicine in Italy: Brief State of the Art of the Principal Research Centers. Int J Mol Sci 2022; 23:ijms23158245. [PMID: 35897825 PMCID: PMC9368060 DOI: 10.3390/ijms23158245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 06/30/2022] [Accepted: 07/22/2022] [Indexed: 02/01/2023] Open
Abstract
Regenerative medicine is the branch of medicine that effectively uses stem cell therapy and tissue engineering strategies to guide the healing or replacement of damaged tissues or organs. A crucial element is undoubtedly the biomaterial that guides biological events to restore tissue continuity. The polymers, natural or synthetic, find wide application thanks to their great adaptability. In fact, they can be used as principal components, coatings or vehicles to functionalize several biomaterials. There are many leading centers for the research and development of biomaterials in Italy. The aim of this review is to provide an overview of the current state of the art on polymer research for regenerative medicine purposes. The last five years of scientific production of the main Italian research centers has been screened to analyze the current advancement in tissue engineering in order to highlight inputs for the development of novel biomaterials and strategies.
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Affiliation(s)
- Francesca Camponogara
- Translational Medicine Department, University of Ferrara, 44121 Ferrara, Italy; (F.C.); (F.Z.); (M.T.); (E.T.); (E.P.)
| | - Federica Zanotti
- Translational Medicine Department, University of Ferrara, 44121 Ferrara, Italy; (F.C.); (F.Z.); (M.T.); (E.T.); (E.P.)
| | - Martina Trentini
- Translational Medicine Department, University of Ferrara, 44121 Ferrara, Italy; (F.C.); (F.Z.); (M.T.); (E.T.); (E.P.)
| | - Elena Tiengo
- Translational Medicine Department, University of Ferrara, 44121 Ferrara, Italy; (F.C.); (F.Z.); (M.T.); (E.T.); (E.P.)
| | - Ilaria Zanolla
- Medical Sciences Department, University of Ferrara, 44121 Ferrara, Italy;
| | - Elham Pishavar
- Translational Medicine Department, University of Ferrara, 44121 Ferrara, Italy; (F.C.); (F.Z.); (M.T.); (E.T.); (E.P.)
| | - Elisa Soliani
- Bioengineering Department, Imperial College London, London SW7 2BX, UK;
| | - Marco Scatto
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, Via Torino 155, 30172 Venezia, Italy;
| | - Paolo Gargiulo
- Institute for Biomedical and Neural Engineering, Reykjavík University, 101 Reykjavík, Iceland;
- Department of Science, Landspítali, 101 Reykjavík, Iceland
| | - Ylenia Zambito
- Chemical Department, University of Pisa, 56124 Pisa, Italy;
| | - Stefano De Luca
- Unit of Naples, Institute of Applied Sciences and Intelligent Systems, National Research Council, Via P. Castellino 111, 80131 Napoli, Italy;
| | - Letizia Ferroni
- Maria Cecilia Hospital, GVM Care & Research, 48033 Cotignola, Italy;
| | - Barbara Zavan
- Translational Medicine Department, University of Ferrara, 44121 Ferrara, Italy; (F.C.); (F.Z.); (M.T.); (E.T.); (E.P.)
- Correspondence:
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Ma X, Wang M, Ran Y, Wu Y, Wang J, Gao F, Liu Z, Xi J, Ye L, Feng Z. Design and Fabrication of Polymeric Hydrogel Carrier for Nerve Repair. Polymers (Basel) 2022; 14:polym14081549. [PMID: 35458307 PMCID: PMC9031091 DOI: 10.3390/polym14081549] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/23/2022] [Accepted: 04/07/2022] [Indexed: 02/07/2023] Open
Abstract
Nerve regeneration and repair still remain a huge challenge for both central nervous and peripheral nervous system. Although some therapeutic substances, including neuroprotective agents, clinical drugs and stem cells, as well as various growth factors, are found to be effective to promote nerve repair, a carrier system that possesses a sustainable release behavior, in order to ensure high on-site concentration during the whole repair and regeneration process, and high bioavailability is still highly desirable. Hydrogel, as an ideal delivery system, has an excellent loading capacity and sustainable release behavior, as well as tunable physical and chemical properties to adapt to various biomedical scenarios; thus, it is thought to be a suitable carrier system for nerve repair. This paper reviews the structure and classification of hydrogels and summarizes the fabrication and processing methods that can prepare a suitable hydrogel carrier with specific physical and chemical properties. Furthermore, the modulation of the physical and chemical properties of hydrogels is also discussed in detail in order to obtain a better therapeutic effect to promote nerve repair. Finally, the future perspectives of hydrogel microsphere carriers for stroke rehabilitation are highlighted.
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Affiliation(s)
- Xiaoyu Ma
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; (X.M.); (Z.F.)
| | - Mengjie Wang
- School of Beijing Rehabilitation Medicine, Capital Medical University, Beijing 100044, China;
| | - Yuanyuan Ran
- Department of Rehabilitation, Beijing Rehabilitation Hospital, Capital Medical School, Beijing 100044, China; (Y.R.); (F.G.)
| | - Yusi Wu
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China; (Y.W.); (J.W.)
- NUIST-UoR International Research Institute, Reading Academy, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Jin Wang
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China; (Y.W.); (J.W.)
| | - Fuhai Gao
- Department of Rehabilitation, Beijing Rehabilitation Hospital, Capital Medical School, Beijing 100044, China; (Y.R.); (F.G.)
| | - Zongjian Liu
- Department of Rehabilitation, Beijing Rehabilitation Hospital, Capital Medical School, Beijing 100044, China; (Y.R.); (F.G.)
- Correspondence: (Z.L.); (J.X.); (L.Y.); Tel.: +86-1056981363 (Z.L.); +86-1056981279 (J.X.); +86-1068912650 (L.Y.)
| | - Jianing Xi
- Department of Rehabilitation, Beijing Rehabilitation Hospital, Capital Medical School, Beijing 100044, China; (Y.R.); (F.G.)
- Correspondence: (Z.L.); (J.X.); (L.Y.); Tel.: +86-1056981363 (Z.L.); +86-1056981279 (J.X.); +86-1068912650 (L.Y.)
| | - Lin Ye
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; (X.M.); (Z.F.)
- Correspondence: (Z.L.); (J.X.); (L.Y.); Tel.: +86-1056981363 (Z.L.); +86-1056981279 (J.X.); +86-1068912650 (L.Y.)
| | - Zengguo Feng
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; (X.M.); (Z.F.)
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12
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Natural Hydrogel-Based Bio-Inks for 3D Bioprinting in Tissue Engineering: A Review. Gels 2022; 8:gels8030179. [PMID: 35323292 PMCID: PMC8948717 DOI: 10.3390/gels8030179] [Citation(s) in RCA: 70] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/09/2022] [Accepted: 03/10/2022] [Indexed: 02/06/2023] Open
Abstract
Three-dimensional (3D) printing is well acknowledged to constitute an important technology in tissue engineering, largely due to the increasing global demand for organ replacement and tissue regeneration. In 3D bioprinting, which is a step ahead of 3D biomaterial printing, the ink employed is impregnated with cells, without compromising ink printability. This allows for immediate scaffold cellularization and generation of complex structures. The use of cell-laden inks or bio-inks provides the opportunity for enhanced cell differentiation for organ fabrication and regeneration. Recognizing the importance of such bio-inks, the current study comprehensively explores the state of the art of the utilization of bio-inks based on natural polymers (biopolymers), such as cellulose, agarose, alginate, decellularized matrix, in 3D bioprinting. Discussions regarding progress in bioprinting, techniques and approaches employed in the bioprinting of natural polymers, and limitations and prospects concerning future trends in human-scale tissue and organ fabrication are also presented.
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13
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Bioactive injectable hydrogels for on demand molecule/cell delivery and for tissue regeneration in the central nervous system. Acta Biomater 2022; 140:88-101. [PMID: 34852302 DOI: 10.1016/j.actbio.2021.11.038] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 11/21/2021] [Accepted: 11/23/2021] [Indexed: 12/21/2022]
Abstract
Currently there are no potential curative therapies that can improve the central nervous system (CNS) regeneration after traumatic injuries or diseases. Indeed, the regeneration of CNS is greatly impaired by limited drug penetration across the blood brain barrier (BBB), poor drug targeting, deficient progenitor neural cells and limited proliferation of mature neural cells. To overcome these limitations, bioengineered injectable hydrogels in combination with drug and cell therapy have been proposed to mimic the complexity of the CNS microenvironment and architecture. Additionally, to enhance relevant CNS regeneration, proper biophysical and biochemical cues are needed. Recently, great efforts have been devoted to tailor stimuli-responsive hydrogels as novel carrier systems which are able to guide neural tissue regeneration. This review provides an extensive overview on the most promising injectable hydrogels for neural tissue engineering. A special emphasis is made to highlight the ability of these hydrogels to deliver bioactive compounds/cells upon the exposure to internal and external stimuli. Bioactive injectable hydrogels have a broad application in central nervous system's (CNS) regeneration. This review gives an overview of the latest pioneering approaches in CNS recovery using stimuli-responsive hydrogels for several neurodegenerative disorders. STATEMENT OF SIGNIFICANCE: This review summarizes the latest innovations on bioactive injectable hydrogels, focusing on tailoring internal/external stimuli-responsive hydrogels for the new injectable systems design, able to guide neural tissue response. The purpose is to highlight the advantages and the limitations of thermo-responsive, photo responsive, magnetic responsive, electric responsive, ultrasound responsive and enzymes-triggered injectable hydrogels in developing customizable neurotherapies. We believe that this comprehensive review will help in identifying the strengths and gaps in the existing literature and to further support the use of injectable hydrogels in stimulating CNS regeneration.
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14
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Hölzl K, Fürsatz M, Göcerler H, Schädl B, Žigon-Branc S, Markovic M, Gahleitner C, Hoorick JV, Van Vlierberghe S, Kleiner A, Baudis S, Pauschitz A, Redl H, Ovsianikov A, Nürnberger S. Gelatin methacryloyl as environment for chondrocytes and cell delivery to superficial cartilage defects. J Tissue Eng Regen Med 2021; 16:207-222. [PMID: 34861104 PMCID: PMC9299930 DOI: 10.1002/term.3273] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 10/26/2021] [Accepted: 11/11/2021] [Indexed: 01/16/2023]
Abstract
Cartilage damage typically starts at its surface, either due to wear or trauma. Treatment of these superficial defects is important in preventing degradation and osteoarthritis. Biomaterials currently used for deep cartilage defects lack appropriate properties for this application. Therefore, we investigated photo‐crosslinked gelatin methacryloyl (gelMA) as a candidate for treatment of surface defects. It allows for liquid application, filling of surface defects and forming a protective layer after UV‐crosslinking, thereby keeping therapeutic cells in place. gelMA and photo‐initiator lithium phenyl‐2,4,6‐trimethyl‐benzoylphosphinate (Li‐TPO) concentration were optimized for application as a carrier to create a favorable environment for human articular chondrocytes (hAC). Primary hAC were used in passages 3 and 5, encapsulated into two different gelMA concentrations (7.5 wt% (soft) and 10 wt% (stiff)) and cultivated for 3 weeks with TGF‐β3 (0, 1 and 10 ng/mL). Higher TGF‐β3 concentrations induced spherical cell morphology independent of gelMA stiffness, while low TGF‐β3 concentrations only induced rounded morphology in stiff gelMA. Gene expression did not vary across gel stiffnesses. As a functional model gelMA was loaded with two different cell types (hAC and/or human adipose‐derived stem cells [ASC/TERT1]) and applied to human osteochondral osteoarthritic plugs. GelMA attached to the cartilage, smoothened the surface and retained cells in place. Resistance against shear forces was tested using a tribometer, simulating normal human gait and revealing maintained cell viability. In conclusion gelMA is a versatile, biocompatible material with good bonding capabilities to cartilage matrix, allowing sealing and smoothening of superficial cartilage defects while simultaneously delivering therapeutic cells for tissue regeneration.
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Affiliation(s)
- Katja Hölzl
- Institute of Materials Science and Technology, 3D Printing and Biofabrication Group, TU Wien, Vienna, Austria
| | - Marian Fürsatz
- Department of Orthopedics and Trauma-Surgery, Division of Trauma-Surgery, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, Vienna, Austria
| | - Hakan Göcerler
- Institute of Engineering Design and Product Development, TU Wien, Vienna, Austria
| | - Barbara Schädl
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, Vienna, Austria.,University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Sara Žigon-Branc
- Institute of Materials Science and Technology, 3D Printing and Biofabrication Group, TU Wien, Vienna, Austria
| | - Marica Markovic
- Institute of Materials Science and Technology, 3D Printing and Biofabrication Group, TU Wien, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Claudia Gahleitner
- Department of Orthopedics and Trauma-Surgery, Division of Trauma-Surgery, Medical University of Vienna, Vienna, Austria
| | - Jasper Van Hoorick
- Centre of Macromolecular Chemistry, Polymer Chemistry and Biomaterials Group, Ghent University, Ghent, Belgium
| | - Sandra Van Vlierberghe
- Centre of Macromolecular Chemistry, Polymer Chemistry and Biomaterials Group, Ghent University, Ghent, Belgium
| | - Anne Kleiner
- Department of Orthopedics and Trauma-Surgery, Division of Trauma-Surgery, Medical University of Vienna, Vienna, Austria
| | - Stefan Baudis
- Austrian Cluster for Tissue Regeneration, Vienna, Austria.,Institute of Applied Synthetic Chemistry, TU Wien, Vienna, Austria
| | | | - Heinz Redl
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Aleksandr Ovsianikov
- Institute of Materials Science and Technology, 3D Printing and Biofabrication Group, TU Wien, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Sylvia Nürnberger
- Department of Orthopedics and Trauma-Surgery, Division of Trauma-Surgery, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
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15
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Meder T, Prest T, Skillen C, Marchal L, Yupanqui VT, Soletti L, Gardner P, Cheetham J, Brown BN. Nerve-specific extracellular matrix hydrogel promotes functional regeneration following nerve gap injury. NPJ Regen Med 2021; 6:69. [PMID: 34697304 PMCID: PMC8546053 DOI: 10.1038/s41536-021-00174-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 09/14/2021] [Indexed: 01/24/2023] Open
Abstract
Nerve transection requires surgical intervention to restore function. The standard of care involves coaptation when a tension-free repair is achievable, or interposition of a graft or conduit when a gap remains. Despite advances, nerve gap injury is associated with unsatisfactory recovery. This study investigates the use of a decellularized, porcine nerve-derived hydrogel filler (peripheral nerve matrix, PNM) for conduits in an 8 mm rat sciatic nerve gap model. The decellularized tissue maintained multiple nerve-specific matrix components and nerve growth factors. This decellularized tissue was used to formulate hydrogels, which were deployed into conduits for nerve gap repair. Nerve recovery was assessed up to 24 weeks post injury by gait analysis, electrophysiology, and axon counting. Deployment of PNM within conduits was shown to improve electrophysiologic response and axon counts compared with those of empty conduit controls. These results indicate that PNM has potential benefits when used as a filler for conduits in nerve gap injuries.
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Affiliation(s)
- T Meder
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA.,Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - T Prest
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA.,Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - C Skillen
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA.,Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - L Marchal
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA.,Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - V T Yupanqui
- Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA, USA
| | | | - P Gardner
- Renerva, LLC, Pittsburgh, PA, USA.,Department of Neurological Surgery, University of Pittsburg School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - J Cheetham
- Renerva, LLC, Pittsburgh, PA, USA.,Department of Clinical Sciences, Cornell College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - B N Brown
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA. .,Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA, USA. .,Renerva, LLC, Pittsburgh, PA, USA.
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16
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Della Sala F, Fabozzi A, di Gennaro M, Nuzzo S, Makvandi P, Solimando N, Pagliuca M, Borzacchiello A. Advances in Hyaluronic-Acid-Based (Nano)Devices for Cancer Therapy. Macromol Biosci 2021; 22:e2100304. [PMID: 34657388 DOI: 10.1002/mabi.202100304] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/08/2021] [Indexed: 12/12/2022]
Abstract
Cancer is the main cause of fatality all over the world with a considerable growth rate. Many biologically active nanoplatforms are exploited for tumor treatment. Of nanodevices, hyaluronic acid (HA)-based systems have shown to be promising candidates for cancer therapy due to their high biocompatibility and cell internalization. Herein, surface functionalization of different nanoparticles (NPs), e.g., organic- and inorganic-based NPs, is highlighted. Subsequently, HA-based nanostructures and their applications in cancer therapy are presented.
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Affiliation(s)
- Francesca Della Sala
- Institute of Polymers, Composites and Biomaterials, National Research Council, IPCB-CNR, Viale J.F. Kennedy 54, Naples, 80125, Italy
| | - Antonio Fabozzi
- Altergon Italia s.r.l, Zona Industriale ASI, Morra De Sanctis (AV), 83040, Italy
| | - Mario di Gennaro
- Institute of Polymers, Composites and Biomaterials, National Research Council, IPCB-CNR, Viale J.F. Kennedy 54, Naples, 80125, Italy
| | - Stefano Nuzzo
- Altergon Italia s.r.l, Zona Industriale ASI, Morra De Sanctis (AV), 83040, Italy
| | - Pooyan Makvandi
- Institute of Polymers, Composites and Biomaterials, National Research Council, IPCB-CNR, Viale J.F. Kennedy 54, Naples, 80125, Italy
| | - Nicola Solimando
- Altergon Italia s.r.l, Zona Industriale ASI, Morra De Sanctis (AV), 83040, Italy
| | - Maurizio Pagliuca
- Altergon Italia s.r.l, Zona Industriale ASI, Morra De Sanctis (AV), 83040, Italy
| | - Assunta Borzacchiello
- Institute of Polymers, Composites and Biomaterials, National Research Council, IPCB-CNR, Viale J.F. Kennedy 54, Naples, 80125, Italy
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17
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Yoon JP, Kim HM, Choi JH, Kang HR, Kim DH, Choi YS, Kim KR, Kim JY, Baek S, Chung SW. Effect of a Porous Suture Containing Transforming Growth Factor Beta 1 on Healing After Rotator Cuff Repair in a Rat Model. Am J Sports Med 2021; 49:3050-3058. [PMID: 34288794 DOI: 10.1177/03635465211028547] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND The healing failure rate after rotator cuff repair is considerably high. PURPOSE To evaluate the effect of a porous suture containing transforming growth factor beta 1 (TGF-β1) on the sustained release of TGF-β1 and rotator cuff healing in a rat model. STUDY DESIGN Controlled laboratory study. METHODS A porous suture was developed, and its tensile strength was measured. TGF-β1 was delivered using the porous suture, and a TGF-β1 release test and human fibroblast proliferation assay were performed. For the animal experiment, 30 rats were randomly allocated into 3 groups (n = 10 each). A bilateral supraspinatus tendon tear was made in all the rats, and repair was performed. Group 1 received repair only; group 2, repair and a single injection of TGF-β1; and group 3, repair using the porous suture containing TGF-β1. Eight weeks after repair, biomechanical and histological analyses were performed. RESULTS The porous suture was successfully developed with mechanical properties compatible with the conventional suture, and the sustained release of TGF-β1 from the porous suture was confirmed. In addition, the cell proliferation assay confirmed the biological safety of the porous suture. In the animal experiment, group 3 biomechanically exhibited the largest cross-sectional area and the highest ultimate failure load and ultimate stress (all P < .05). Histological examination revealed that group 3 showed significantly better collagen fiber density and tendon-to-bone maturation than did groups 1 and 2 (all P < .05). CONCLUSION The porous suture containing TGF-β1 could sustainedly and safely release TGF-β1, and its use during rotator cuff repair could improve rotator cuff healing, as assessed on the basis of the biomechanical and histological changes in the rat model in this study. Considering the effectiveness, safety, and convenience of the porous suture without extra effort in surgery, the findings of the present study will have a far-reaching effect on the treatment of rotator cuff tears. CLINICAL RELEVANCE The porous suture containing TGF-β1 might improve healing after rotator cuff repair.
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Affiliation(s)
- Jong Pil Yoon
- Department of Orthopaedic Surgery, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Hun-Min Kim
- Functional Materials R&D Group, Korea Dyeing and Finishing Technology Institute, Daegu, Republic of Korea
| | - Jin-Hyun Choi
- Department of Bio-fibers and Materials Science, College of Agriculture and Life Science, Kyungpook National University, Daegu, Republic of Korea
| | - Hae Rim Kang
- Department of Bio-fibers and Materials Science, College of Agriculture and Life Science, Kyungpook National University, Daegu, Republic of Korea
| | - Dong Hyun Kim
- Department of Orthopaedic Surgery, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Young Seo Choi
- Department of Orthopaedic Surgery, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Kyung-Rock Kim
- Department of Orthopaedic Surgery, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Ja-Yeon Kim
- Department of Orthopaedic Surgery, School of Medicine, Konkuk University, Seoul, Republic of Korea
| | - Samuel Baek
- Department of Orthopaedic Surgery, School of Medicine, Konkuk University, Seoul, Republic of Korea
| | - Seok Won Chung
- Department of Orthopaedic Surgery, School of Medicine, Konkuk University, Seoul, Republic of Korea
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18
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Cadena M, Ning L, King A, Hwang B, Jin L, Serpooshan V, Sloan SA. 3D Bioprinting of Neural Tissues. Adv Healthc Mater 2021; 10:e2001600. [PMID: 33200587 PMCID: PMC8711131 DOI: 10.1002/adhm.202001600] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/19/2020] [Indexed: 02/06/2023]
Abstract
The human nervous system is a remarkably complex physiological network that is inherently challenging to study because of obstacles to acquiring primary samples. Animal models offer powerful alternatives to study nervous system development, diseases, and regenerative processes, however, they are unable to address some species-specific features of the human nervous system. In vitro models of the human nervous system have expanded in prevalence and sophistication, but still require further advances to better recapitulate microenvironmental and cellular features. The field of neural tissue engineering (TE) is rapidly adopting new technologies that enable scientists to precisely control in vitro culture conditions and to better model nervous system formation, function, and repair. 3D bioprinting is one of the major TE technologies that utilizes biocompatible hydrogels to create precisely patterned scaffolds, designed to enhance cellular responses. This review focuses on the applications of 3D bioprinting in the field of neural TE. Important design parameters are considered when bioprinting neural stem cells are discussed. The emergence of various bioprinted in vitro platforms are also reviewed for developmental and disease modeling and drug screening applications within the central and peripheral nervous systems, as well as their use as implants for in vivo regenerative therapies.
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Affiliation(s)
- Melissa Cadena
- Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, GA 30322, USA
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Liqun Ning
- Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, GA 30322, USA
| | - Alexia King
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Boeun Hwang
- Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, GA 30322, USA
| | - Linqi Jin
- Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, GA 30322, USA
| | - Vahid Serpooshan
- Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, GA 30322, USA
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA
- Children’s Healthcare of Atlanta, Atlanta, GA 30322, USA
| | - Steven A. Sloan
- Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, GA 30322, USA
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA 30322, USA
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19
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Chitosan Micro-Grooved Membranes with Increased Asymmetry for the Improvement of the Schwann Cell Response in Nerve Regeneration. Int J Mol Sci 2021; 22:ijms22157901. [PMID: 34360664 PMCID: PMC8348329 DOI: 10.3390/ijms22157901] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/14/2021] [Accepted: 07/19/2021] [Indexed: 01/14/2023] Open
Abstract
Peripheral nerve injuries are a common condition in which a nerve is damaged, affecting more than one million people every year. There are still no efficient therapeutic treatments for these injuries. Artificial scaffolds can offer new opportunities for nerve regeneration applications; in this framework, chitosan is emerging as a promising biomaterial. Here, we set up a simple and effective method for the production of micro-structured chitosan films by solvent casting, with high fidelity in the micro-pattern reproducibility. Three types of chitosan directional micro-grooved patterns, presenting different levels of symmetricity, were developed for application in nerve regenerative medicine: gratings (GR), isosceles triangles (ISO) and scalene triangles (SCA). The directional patterns were tested with a Schwann cell line. The most asymmetric topography (SCA), although it polarized the cell shaping less efficiently, promoted higher cell proliferation and a faster cell migration, both individually and collectively, with a higher directional persistence of motion. Overall, the use of micro-structured asymmetrical directional topographies may be exploited to enhance the nerve regeneration process mediated by chitosan scaffolds.
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20
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Zheng M, Wang X, Yue O, Hou M, Zhang H, Beyer S, Blocki AM, Wang Q, Gong G, Liu X, Guo J. Skin-inspired gelatin-based flexible bio-electronic hydrogel for wound healing promotion and motion sensing. Biomaterials 2021; 276:121026. [PMID: 34298443 DOI: 10.1016/j.biomaterials.2021.121026] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 06/27/2021] [Accepted: 07/12/2021] [Indexed: 01/29/2023]
Abstract
Next generation tissue-engineered skin scaffolds promise to provide sensory restoration through electrical stimulation in addition to effectively rebuilding and repairing skin. The integration of real-time monitoring of the injury motion activities can fundamentally improve the therapeutic efficacy by providing detailed data to guide the clinical practice. Herein, a mechanically-flexible, electroactive, and self-healable hydrogels (MESGel) was engineered for the combinational function of electrically-stimulated accelerated wound healing and motion sensing. MESGel shows outstanding biocompatibility and multifunctional therapeutic properties including flexibility, self-healing characteristics, biodegradability, and bioelectroactivity. Moreover, MESGel shows its potential of being a novel flexible electronic skin sensor to record the injury motion activities. Comprehensive in vitro and in vivo experiments prove that MESGel can facilitate effective electrical stimulation, actively promoting proliferation in Chinese hamster lung epithelial cells and therefore can accelerate favorable epithelial biology during skin wound healing, demonstrating an effective therapeutic strategy for a full-thickness skin defect model and leading to new-type flexible bioelectronics.
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Affiliation(s)
- Manhui Zheng
- College of Bioresources Chemical and Materials Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science &Technology, Xi'an, 710021, China
| | - Xuechuan Wang
- College of Bioresources Chemical and Materials Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science &Technology, Xi'an, 710021, China.
| | - Ouyang Yue
- College of Bioresources Chemical and Materials Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science &Technology, Xi'an, 710021, China
| | - Mengdi Hou
- College of Bioresources Chemical and Materials Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science &Technology, Xi'an, 710021, China
| | - Huijie Zhang
- College of Bioresources Chemical and Materials Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science &Technology, Xi'an, 710021, China
| | - Sebastian Beyer
- Institute for Tissue Engineering and Regenerative Medicine & Department of Biomedical Engineering, Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Anna Maria Blocki
- Institute for Tissue Engineering and Regenerative Medicine & Department of Biomedical Engineering, Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Qin Wang
- BMI Center for Biomass Materials and Nanointerfaces, School of Biomass Science and Engineering, Sichuan University, Chengdu, Sichuan, 610065, China; School of Pharmacy, Southwest University for Nationalities, Chengdu, Sichuan, 610051, China
| | - Guidong Gong
- BMI Center for Biomass Materials and Nanointerfaces, School of Biomass Science and Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Xinhua Liu
- College of Bioresources Chemical and Materials Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science &Technology, Xi'an, 710021, China.
| | - Junling Guo
- BMI Center for Biomass Materials and Nanointerfaces, School of Biomass Science and Engineering, Sichuan University, Chengdu, Sichuan, 610065, China; John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, MA, 02115, United States; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan, 610065, China.
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21
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Khalighfard S, Khori V, Alizadeh AM, Vahabzadeh G, Tajaldini M, Sedighi S, Nozarian Z, Khodayari H, Khodayari S, Ganji F, Veisi Malekshahi Z, Mirmajidi T. Dual effects of atorvastatin on angiogenesis pathways in the differentiation of mesenchymal stem cells. Eur J Pharmacol 2021; 907:174281. [PMID: 34217710 DOI: 10.1016/j.ejphar.2021.174281] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 06/19/2021] [Accepted: 06/22/2021] [Indexed: 10/21/2022]
Abstract
Atorvastatin (ATO) can improve the transplantation efficacy of mesenchymal stem cells (MSCs) after acute myocardial infarction. The present study aimed at ATO effects on the angiogenesis-signaling pathways from MSCs' differentiation to tissue angiogenesis. MSCs were first prepared from BALB/c mouse bone marrow. MTT assay was then done for the biodegradability of MSCs with the extracellular matrix. After that, the differentiation of cells into the bone and fat tissues was confirmed by Alizarin and Oil Red O staining. The extracellular matrix was then combined with the cells to the implant. Animals were intraperitoneally treated with ATO (2 and 40 mg/kg, daily) three days before cell transplantation to one week after. Finally, the assays were carried out by electron microscopy, immunocytochemistry, ELISA, Western blot, and RT-qPCR techniques. A phase-contrast microscope confirmed the morphology of cells. The cell differentiation into bone and fat tissues was confirmed by Alizarin red staining and flow cytometry, and the cell proliferation was confirmed by MTT assay. Unlike ATO 40 mg/kg group, ATO 2 mg/kg was significantly increased the CD31, eNOS, podocalyxin, von Willibrand factor, and alpha-smooth muscle actin proteins levels compared to the control group in vitro experiment. The expression of CD31 and VEGF proteins, as angiogenesis markers, and Ki-67 protein, as a proliferation marker, was significantly higher in a low dose of ATO (2 mg/kg) than that of the control group in vivo experiment. Unlike ATO 40 mg/kg, the expression levels of ERK, AKT, NF-ҝB, Rho, STAT3, Ets-1, HIF-1α, and VEGF proteins and genes were significantly increased in ATO 2 mg/kg compared to the control. A low dose of ATO can be a beneficial tool in the function of MSCs and their differentiation to tissue angiogenesis.
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Affiliation(s)
- Solmaz Khalighfard
- Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran; Cancer Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Vahid Khori
- Ischemic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | | | - Gelareh Vahabzadeh
- Department of Pharmacology, School of Medicine, Iran University of Medical Science, Tehran, Iran
| | - Mahboubeh Tajaldini
- Ischemic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Sima Sedighi
- Ischemic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Zohreh Nozarian
- Department of Pathology, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamid Khodayari
- International Center for Personalized Medicine, Düsseldorf, Germany
| | - Saeed Khodayari
- International Center for Personalized Medicine, Düsseldorf, Germany
| | - Fatemeh Ganji
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Ziba Veisi Malekshahi
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Tahereh Mirmajidi
- Cancer Research Center, Tehran University of Medical Sciences, Tehran, Iran
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22
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Sustained Release Systems for Delivery of Therapeutic Peptide/Protein. Biomacromolecules 2021; 22:2299-2324. [PMID: 33957752 DOI: 10.1021/acs.biomac.1c00160] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Peptide/protein therapeutics have been significantly applied in the clinical treatment of various diseases such as cancer, diabetes, etc. owing to their high biocompatibility, specificity, and therapeutic efficacy. However, due to their immunogenicity, instability stemming from its complex tertiary and quaternary structure, vulnerability to enzyme degradation, and rapid renal clearance, the clinical application of protein/peptide therapeutics is significantly confined. Though nanotechnology has been demonstrated to prevent enzyme degradation of the protein therapeutics and thus enhance the half-life, issues such as initial burst release and uncontrollable release kinetics are still unsolved. Moreover, the traditional administration method results in poor patient compliance, limiting the clinical application of protein/peptide therapeutics. Exploiting the sustained-release formulations for more controllable delivery of protein/peptide therapeutics to decrease the frequency of injection and enhance patient compliance is thus greatly meaningful. In this review, we comprehensively summarize the substantial advancements of protein/peptide sustained-release systems in the past decades. In addition, the advantages and disadvantages of all these sustained-release systems in clinical application together with their future challenges are also discussed in this review.
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23
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Huang Q, Cai Y, Zhang X, Liu J, Liu Z, Li B, Wong H, Xu F, Sheng L, Sun D, Qin J, Luo Z, Lu X. Aligned Graphene Mesh-Supported Double Network Natural Hydrogel Conduit Loaded with Netrin-1 for Peripheral Nerve Regeneration. ACS APPLIED MATERIALS & INTERFACES 2021; 13:112-122. [PMID: 33397079 DOI: 10.1021/acsami.0c16391] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The gold standard treatment for peripheral nerve injuries (PNIs) is the autologous graft, while it is associated with the shortage of donors and results in major complications. In the present study, we engineer a graphene mesh-supported double-network (DN) hydrogel scaffold, loaded with netrin-1. Natural alginate and gelatin-methacryloyl entangled hydrogel that is synthesized via fast exchange of ions and ultraviolet irradiation provide proper mechanical strength and excellent biocompatibility and can also serve as a reservoir for netrin-1. Meanwhile, the graphene mesh can promote the proliferation of Schwann cells and guide their alignments. This approach allows scaffolds to have an acceptable Young's modulus of 725.8 ± 46.52 kPa, matching with peripheral nerves, as well as a satisfactory electrical conductivity of 6.8 ± 0.85 S/m. In addition, netrin-1 plays a dual role in directing axon pathfinding and neuronal migration that optimizes the tube formation ability at a concentration of 100 ng/mL. This netrin-1-loaded graphene mesh tube/DN hydrogel nerve scaffold can significantly promote the regeneration of peripheral nerves and the restoration of denervated muscle, which is even superior to autologous grafts. Our findings may provide an effective therapeutic strategy for PNI patients that can replace the scarce autologous graft.
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Affiliation(s)
- Qun Huang
- Department of Vascular Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Yuting Cai
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China
- Department of Chemical and Biological Engineering, and William Mong Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, China
| | - Xing Zhang
- Department of Vascular Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Junchao Liu
- Department of Vascular Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Zhenjing Liu
- Department of Chemical and Biological Engineering, and William Mong Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, China
| | - Bo Li
- Department of Vascular Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Hoilun Wong
- Department of Chemical and Biological Engineering, and William Mong Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, China
| | - Feng Xu
- Bioinspired Engineering and Biomechanics Center, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
| | - Liyuan Sheng
- Shenzhen Institute, Peking University, Shenzhen 518057, China
| | - Dazhi Sun
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China
| | - Jinbao Qin
- Department of Vascular Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
- Vascular Center of Shanghai Jiao Tong University, Shanghai 200011, China
| | - Zhengtang Luo
- Department of Chemical and Biological Engineering, and William Mong Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, China
| | - Xinwu Lu
- Department of Vascular Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
- Vascular Center of Shanghai Jiao Tong University, Shanghai 200011, China
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24
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Liu L, Guo S, Shi W, Liu Q, Huo F, Wu Y, Tian W. Bone Marrow Mesenchymal Stem Cell-Derived Small Extracellular Vesicles Promote Periodontal Regeneration. Tissue Eng Part A 2020; 27:962-976. [PMID: 32962564 DOI: 10.1089/ten.tea.2020.0141] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Bone marrow mesenchymal stem cell-derived small extracellular vesicles (BMSC-sEVs) can be used as a potential cell-free strategy for periodontal tissue regeneration, and we aim to investigate the effect and possible mechanism of BMSC-sEV in periodontal tissue regeneration in this study. The BMSC-sEV was isolated by the Exosome Isolation™ reagent and identified by transmission electron microscopy, nanoparticle tracking analysis, and Western blotting. The human periodontal ligament cells (hPDLCs) were cocultured with BMSC-sEV in vitro to detect the effects of BMSC-sEV on hPDLC migration, proliferation, and differentiation. The BMSC-sEV loaded by hydrogel was injected into experimental periodontitis rats to verify the therapeutic effect and possible mechanism. The results showed that BMSC-sEVs were 30-150 nm vesicles and expressed the exosome protein CD63 and tumor susceptibility 101 (TSG101), which could promote the migration, proliferation, osteogenic differentiation of hPDLCs. The BMSC-sEV-hydrogel had a therapeutic effect on periodontitis rats. After administration for 4-8 weeks, microcomputed tomography and histological analysis showed that alveolar bone loss, inflammatory infiltration, and collagen destruction in the BMSC-sEV-hydrogel group were less than that in the phosphate-buffered saline (PBS)-hydrogel group and periodontitis group. Further immunohistochemical and immunofluorescent staining revealed that the number of tartrate-resistant acid phosphatase-positive cells and the expression ratio of osteoprotegerin (OPG) and receptor-activator of nuclear factor kappa beta ligand (RANKL) in the BMSC-sEV-hydrogel group were lower than that in the PBS-hydrogel group and periodontitis group, while the expression of transforming growth factor-beta 1 (TGF-β1) and the ratio of macrophage type 2 and macrophage type 1 (M2/M1) were opposite. Therefore, BMSC-sEV can promote the regeneration of periodontal tissues, and that may be partly due to BMSC-sEV involvement in the OPG-RANKL-RANK signaling pathway to regulate the function of osteoclasts and affect the macrophage polarization and TGF-β1 expression to modulate the inflammatory immune response, thereby inhibiting the development of periodontitis and immune damage of periodontal tissue. Impact statement Bone marrow mesenchymal stem cell-derived small extracellular vesicles (BMSCs-sEVs) have been proven to have similar functions to BMSCs, such as promoting the regeneration of heart, liver, kidney, and bone tissue and regulating immune responses. BMSCs are candidate seed cells of periodontal regeneration, but it is unclear about the role of BMSC-sEV on periodontal regeneration. In this study, we explored the effects and possible mechanism of BMSC-sEV on periodontal regeneration. The results of this study provide the evidence of BMSC-sEV as a cell-free strategy for periodontal regeneration.
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Affiliation(s)
- Li Liu
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Shujuan Guo
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Weiwei Shi
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Qian Liu
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Fangjun Huo
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Yafei Wu
- National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
| | - Weidong Tian
- Engineering Research Center of Oral Translational Medicine, Ministry of Education, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China.,Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R. China
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25
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Angiogenic Potential in Biological Hydrogels. Biomedicines 2020; 8:biomedicines8100436. [PMID: 33092064 PMCID: PMC7589931 DOI: 10.3390/biomedicines8100436] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/02/2020] [Accepted: 10/16/2020] [Indexed: 12/19/2022] Open
Abstract
Hydrogels are three-dimensional (3D) materials able to absorb and retain water in large amounts while maintaining their structural stability. Due to their considerable biocompatibility and similarity with the body’s tissues, hydrogels are one of the most promising groups of biomaterials. The main application of these hydrogels is in regenerative medicine, in which they allow the formation of an environment suitable for cell differentiation and growth. Deriving from these hydrogels, it is, therefore, possible to obtain bioactive materials that can regenerate tissues. Because vessels guarantee the right amount of oxygen and nutrients but also assure the elimination of waste products, angiogenesis is one of the processes at the base of the regeneration of a tissue. On the other hand, it is a very complex mechanism and the parameters to consider are several. Indeed, the factors and the cells involved in this process are numerous and, for this reason, it has been a challenge to recreate a biomaterial able to adequately sustain the angiogenic process. However, in this review the focal point is the application of natural hydrogels in angiogenesis enhancing and their potential to guide this process.
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26
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Xu Y, Jacquat RPB, Shen Y, Vigolo D, Morse D, Zhang S, Knowles TPJ. Microfluidic Templating of Spatially Inhomogeneous Protein Microgels. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2000432. [PMID: 32529798 DOI: 10.1002/smll.202000432] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 04/20/2020] [Accepted: 05/18/2020] [Indexed: 05/20/2023]
Abstract
3D scaffolds in the form of hydrogels and microgels have allowed for more native cell-culture systems to be developed relative to flat substrates. Native biological tissues are, however, usually spatially inhomogeneous and anisotropic, but regulating the spatial density of hydrogels at the microscale to mimic this inhomogeneity has been challenging to achieve. Moreover, the development of biocompatible synthesis approaches for protein-based microgels remains challenging, and typical gelation conditions include UV light, extreme pH, extreme temperature, or organic solvents, factors which can compromise the viability of cells. This study addresses these challenges by demonstrating an approach to fabricate protein microgels with controllable radial density through microfluidic mixing and physical and enzymatic crosslinking of gelatin precursor molecules. Microgels with a higher density in their cores and microgels with a higher density in their shells are demonstrated. The microgels have robust stability at 37 °C and different dissolution rates through enzymolysis, which can be further used for gradient scaffolds for 3D cell culture, enabling controlled degradability, and the release of biomolecules. The design principles of the microgels could also be exploited to generate other soft materials for applications ranging from novel protein-only micro reactors to soft robots.
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Affiliation(s)
- Yufan Xu
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Raphaël P B Jacquat
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
- Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Yi Shen
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Daniele Vigolo
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - David Morse
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
- Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Shuyuan Zhang
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Tuomas P J Knowles
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
- Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
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27
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Samadian H, Maleki H, Fathollahi A, Salehi M, Gholizadeh S, Derakhshankhah H, Allahyari Z, Jaymand M. Naturally occurring biological macromolecules-based hydrogels: Potential biomaterials for peripheral nerve regeneration. Int J Biol Macromol 2020; 154:795-817. [DOI: 10.1016/j.ijbiomac.2020.03.155] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 03/15/2020] [Accepted: 03/16/2020] [Indexed: 12/18/2022]
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28
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He FL, Qiu S, Zou JL, Gu FB, Yao Z, Tu ZH, Wang YY, Liu XL, Zhou LH, Zhu QT. Covering the proximal nerve stump with chondroitin sulfate proteoglycans prevents traumatic painful neuroma formation by blocking axon regeneration after neurotomy in Sprague Dawley rats. J Neurosurg 2020; 134:1599-1609. [PMID: 32470939 DOI: 10.3171/2020.3.jns193202] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 03/06/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Neuropathic pain caused by traumatic neuromas is an extremely intractable clinical problem. Disorderly scar tissue accumulation and irregular and immature axon regeneration around the injury site mainly contribute to traumatic painful neuroma formation. Therefore, successfully preventing traumatic painful neuroma formation requires the effective inhibition of irregular axon regeneration and disorderly accumulation of scar tissue. Considering that chondroitin sulfate proteoglycans (CSPGs) can act on the growth cone and effectively inhibit axon regeneration, the authors designed and manufactured a CSPG-gelatin blocker to regulate the CSPGs' spatial distribution artificially and applied it in a rat model after sciatic nerve neurectomy to evaluate its effects in preventing traumatic painful neuroma formation. METHODS Sixty female Sprague Dawley rats were randomly divided into three groups (positive group: no covering; blank group: covering with gelatin blocker; and CSPG group: covering with the CSPG-gelatin blocker). Pain-related factors were evaluated 2 and 8 weeks postoperatively (n = 30). Neuroma growth, autotomy behavior, and histological features of the neuromas were assessed 8 weeks postoperatively (n = 30). RESULTS Eight weeks postoperatively, typical bulb-shaped neuromas did not form in the CSPG group, and autotomy behavior was obviously better in the CSPG group (p < 0.01) than in the other two groups. Also, in the CSPG group the regenerated axons showed a lower density and more regular and improved myelination (p < 0.01). Additionally, the distribution and density of collagenous fibers and the expression of α-smooth muscle actin were significantly lower in the CSPG group than in the positive group (p < 0.01). Regarding pain-related factors, c-fos, substance P, interleukin (IL)-17, and IL-1β levels were significantly lower in the CSPG group than those in the positive and blank groups 2 weeks postoperatively (p < 0.05), while substance P and IL-17 remained lower in the CSPG group 8 weeks postoperatively (p < 0.05). CONCLUSIONS The authors found that CSPGs loaded in a gelatin blocker can prevent traumatic neuroma formation and effectively relieve pain symptoms after sciatic nerve neurotomy by blocking irregular axon regeneration and disorderly collagenous fiber accumulation in the proximal nerve stump. These results indicate that covering the proximal nerve stump with CSPGs may be a new and promising strategy to prevent traumatic painful neuroma formation in the clinical setting.
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Affiliation(s)
- Fu-Lin He
- 1Department of Microsurgery and Orthopedic Trauma, First Affiliated Hospital of Sun Yat-sen University, Guangzhou.,2Center for Peripheral Nerve Tissue Engineering and Technology Research
| | - Shuai Qiu
- 1Department of Microsurgery and Orthopedic Trauma, First Affiliated Hospital of Sun Yat-sen University, Guangzhou.,2Center for Peripheral Nerve Tissue Engineering and Technology Research
| | - Jian-Long Zou
- 3School of Basic Medical Sciences, Guangzhou Medical University
| | - Fan-Bin Gu
- 1Department of Microsurgery and Orthopedic Trauma, First Affiliated Hospital of Sun Yat-sen University, Guangzhou.,2Center for Peripheral Nerve Tissue Engineering and Technology Research
| | - Zhi Yao
- 1Department of Microsurgery and Orthopedic Trauma, First Affiliated Hospital of Sun Yat-sen University, Guangzhou.,2Center for Peripheral Nerve Tissue Engineering and Technology Research
| | - Zhe-Hui Tu
- 1Department of Microsurgery and Orthopedic Trauma, First Affiliated Hospital of Sun Yat-sen University, Guangzhou
| | - Yuan-Yuan Wang
- 1Department of Microsurgery and Orthopedic Trauma, First Affiliated Hospital of Sun Yat-sen University, Guangzhou
| | - Xiao-Lin Liu
- 1Department of Microsurgery and Orthopedic Trauma, First Affiliated Hospital of Sun Yat-sen University, Guangzhou.,2Center for Peripheral Nerve Tissue Engineering and Technology Research.,4Guangdong Province Engineering Laboratory for Soft Tissue Biofabrication; and
| | - Li-Hua Zhou
- 5Department of Anatomy, School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Qing-Tang Zhu
- 1Department of Microsurgery and Orthopedic Trauma, First Affiliated Hospital of Sun Yat-sen University, Guangzhou.,2Center for Peripheral Nerve Tissue Engineering and Technology Research.,4Guangdong Province Engineering Laboratory for Soft Tissue Biofabrication; and
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29
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Comprehensive Assessment of Nile Tilapia Skin ( Oreochromis niloticus) Collagen Hydrogels for Wound Dressings. Mar Drugs 2020; 18:md18040178. [PMID: 32218368 PMCID: PMC7230254 DOI: 10.3390/md18040178] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/17/2020] [Accepted: 03/23/2020] [Indexed: 12/14/2022] Open
Abstract
Collagen plays an important role in the formation of extracellular matrix (ECM) and development/migration of cells and tissues. Here we report the preparation of collagen and collagen hydrogel from the skin of tilapia and an evaluation of their potential as a wound dressing for the treatment of refractory wounds. The acid-soluble collagen (ASC) and pepsin-soluble collagen (PSC) were extracted and characterized using sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE), differential scanning calorimetry (DSC), circular dichroism (CD) and Fourier transform infrared spectroscopy (FTIR) analysis. Both ASC and PSC belong to type I collagen and have a complete triple helix structure, but PSC shows lower molecular weight and thermal stability, and has the inherent low antigenicity. Therefore, PSC was selected to prepare biomedical hydrogels using its self-aggregating properties. Rheological characterization showed that the mechanical strength of the hydrogels increased as the PSC content increased. Scanning electron microscope (SEM) analysis indicated that hydrogels could form a regular network structure at a suitable PSC content. Cytotoxicity experiments confirmed that hydrogels with different PSC content showed no significant toxicity to fibroblasts. Skin repair experiments and pathological analysis showed that the collagen hydrogels wound dressing could significantly accelerate the healing of deep second-degree burn wounds and the generation of new skin appendages, which can be used for treatment of various refractory wounds.
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30
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Manoukian OS, Baker JT, Rudraiah S, Arul MR, Vella AT, Domb AJ, Kumbar SG. Functional polymeric nerve guidance conduits and drug delivery strategies for peripheral nerve repair and regeneration. J Control Release 2019; 317:78-95. [PMID: 31756394 DOI: 10.1016/j.jconrel.2019.11.021] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 10/16/2019] [Accepted: 11/18/2019] [Indexed: 12/25/2022]
Abstract
Peripheral nerve injuries can be extremely debilitating, resulting in sensory and motor loss-of-function. Endogenous repair is limited to non-severe injuries in which transection of nerves necessitates surgical intervention. Traditional treatment approaches include the use of biological grafts and alternative engineering approaches have made progress. The current article serves as a comprehensive, in-depth perspective on peripheral nerve regeneration, particularly nerve guidance conduits and drug delivery strategies. A detailed background of peripheral nerve injury and repair pathology, and an in-depth look into augmented nerve regeneration, nerve guidance conduits, and drug delivery strategies provide a state-of-the-art perspective on the field.
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Affiliation(s)
- Ohan S Manoukian
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA; Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA
| | - Jiana T Baker
- Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA
| | - Swetha Rudraiah
- Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA; Department of Pharmaceutical Sciences, University of Saint Joseph, Hartford, CT, USA
| | - Michael R Arul
- Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA
| | - Anthony T Vella
- Department of Department of Immunology, University of Connecticut Health, Farmington, CT, USA
| | - Abraham J Domb
- Institute of Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Sangamesh G Kumbar
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA; Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA.
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31
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Mehrabi A, Baheiraei N, Adabi M, Amirkhani Z. Development of a Novel Electroactive Cardiac Patch Based on Carbon Nanofibers and Gelatin Encouraging Vascularization. Appl Biochem Biotechnol 2019; 190:931-948. [DOI: 10.1007/s12010-019-03135-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 08/25/2019] [Indexed: 11/30/2022]
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Zhang K, Wei Z, Xu X, Feng Q, Xu J, Bian L. Efficient catechol functionalization of biopolymeric hydrogels for effective multiscale bioadhesion. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109835. [DOI: 10.1016/j.msec.2019.109835] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 04/13/2019] [Accepted: 05/29/2019] [Indexed: 12/17/2022]
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Chen R, Wang B, Liu Y, He J, Lin R, Li D. Gelatin-based perfusable, endothelial carotid artery model for the study of atherosclerosis. Biomed Eng Online 2019; 18:87. [PMID: 31391047 PMCID: PMC6685230 DOI: 10.1186/s12938-019-0706-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 07/29/2019] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Carotid artery geometry is important for recapitulating a pathophysiological microenvironment to study wall shear stress (WSS)-induced endothelial dysfunction in atherosclerosis. Endothelial cells (ECs) cultured with hydrogel have been shown to exhibit in vivo-like behaviours. However, to date, studies using hydrogel culture have not fully recapitulated the 3D geometry and blood flow patterns of real-life healthy or diseased carotid arteries. In this study, we developed a gelatin-patterned, endothelialized carotid artery model to study the endothelium response to WSS. RESULTS Two representative regions were selected based on the computational fluid dynamics on the TF-shaped carotid artery: Region ECA (external carotid artery) and Region CS (carotid sinus). Progressive elongation and alignment of the ECs in the flow direction were observed in Region ECA after 8, 16 and 24 h. However, the F-actin cytoskeleton remained disorganized in Region CS after 24 h. Further investigation revealed that expression of vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) was greatly increased in Region CS relative to that in Region ECA. The physiological WSS in the carotid artery system was found to stimulate nitric oxide (NO) and prostacyclin (PGI2) release and inhibit endothelin-1 (ET-1) release after 24-h perfusion experiments. The effective permeability (E.P) of fluorescein isothiocyanate (FITC)-dextran 40 kDa in Regions ECA and CS was monitored, and it was found that the turbulence WSS value (in Region CS) was less than 0.4 Pa, and there was a significant increase in the E.P relative to that in Region ECA, in which laminar WSS value was 1.56 Pa. The tight junction protein (ZO-1) production was shown that the low WSS in Region CS induced ZO-1-level downregulation compared with that in Region ECA. CONCLUSIONS The results suggested that the gelatin-based perfusable, endothelial carotid artery model can be effective for studying the pathogenesis of atherosclerosis by which flow dynamics control the endothelium layer function in vitro.
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Affiliation(s)
- Ruomeng Chen
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Bo Wang
- Departments of Pharmacology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Yaxiong Liu
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China.
| | - Jiankang He
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Rong Lin
- Departments of Pharmacology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Dichen Li
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China
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Growth factor delivery: Defining the next generation platforms for tissue engineering. J Control Release 2019; 306:40-58. [DOI: 10.1016/j.jconrel.2019.05.028] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/15/2019] [Accepted: 05/17/2019] [Indexed: 12/14/2022]
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Cidade MT, Ramos DJ, Santos J, Carrelo H, Calero N, Borges JP. Injectable Hydrogels Based on Pluronic/Water Systems Filled with Alginate Microparticles for Biomedical Applications. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E1083. [PMID: 30986948 PMCID: PMC6479463 DOI: 10.3390/ma12071083] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 03/26/2019] [Accepted: 03/28/2019] [Indexed: 01/03/2023]
Abstract
A (model) composite system for drug delivery was developed based on a thermoresponsive hydrogel loaded with microparticles. We used Pluronic F127 hydrogel as the continuous phase and alginate microparticles as the dispersed phase of this composite system. It is well known that Pluronic F127 forms a gel when added to water in an appropriate concentration and in a certain temperature range. Pluronic F127 hydrogel may be loaded with drug and injected, in its sol state, to act as a drug delivery system in physiological environment. A rheological characterization allowed the most appropriate concentration of Pluronic F127 (15.5 wt%) and appropriate alginate microparticles contents (5 and 10 wt%) to be determined. Methylene blue (MB) was used as model drug to perform drug release studies in MB loaded Pluronic hydrogel and in MB loaded alginate microparticles/Pluronic hydrogel composite system. The latter showed a significantly slower MB release than the former (10 times), suggesting its potential in the development of dual cargo release systems either for drug delivery or tissue engineering.
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Affiliation(s)
- M T Cidade
- i3N/CENIMAT, Department of Materials Science, Faculty of Sciences and Technology, Universidade, NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal.
| | - D J Ramos
- i3N/CENIMAT, Department of Materials Science, Faculty of Sciences and Technology, Universidade, NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal.
| | - J Santos
- Applied Rheology, Colloid Technology, Chemical Engineering Department, University of Sevilla, c/ P. García González, 1, E41012 Sevilla, Spain.
| | - H Carrelo
- i3N/CENIMAT, Department of Materials Science, Faculty of Sciences and Technology, Universidade, NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal.
| | - N Calero
- Applied Rheology, Colloid Technology, Chemical Engineering Department, University of Sevilla, c/ P. García González, 1, E41012 Sevilla, Spain.
| | - J P Borges
- i3N/CENIMAT, Department of Materials Science, Faculty of Sciences and Technology, Universidade, NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal.
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Vardar E, Vythilingam G, Pinnagoda K, Engelhardt EM, Zambelli PY, Hubbell JA, Lutolf MP, Frey P, Larsson HM. A bioactive injectable bulking material; a potential therapeutic approach for stress urinary incontinence. Biomaterials 2019; 206:41-48. [PMID: 30925287 DOI: 10.1016/j.biomaterials.2019.03.030] [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] [Received: 08/15/2018] [Accepted: 03/19/2019] [Indexed: 12/17/2022]
Abstract
Stress urinary incontinence (SUI) is a life changing condition, affecting 20 million women worldwide. In this study, we developed a bioactive, injectable bulking agent that consists of Permacol™ (Medtronic, Switzerland) and recombinant insulin like growth factor-1 conjugated fibrin micro-beads (fib_rIGF-1) for its bulk stability and capacity to induce muscle regeneration. Therefore, Permacol™ formulations were injected in the submucosal space of rabbit bladders. The ability of a bulking material to form a stable and muscle-inducing bulk represents for us a promising therapeutic approach to achieve a long-lasting treatment for SUI. The fib_rIGF-1 showed no adverse effect on human smooth muscle cell metabolic activity and viability in vitro based on AlamarBlue assays and Live/Dead staining. Three months after injection of fib_rIGF-1 together with Permacol™ into the rabbit bladder wall, we observed a smooth muscle tissue like formation within the injected materials. Positive staining for alpha smooth muscle actin, calponin, and caldesmon demonstrated a contractile phenotype of the newly formed smooth muscle tissue. Moreover, the fib_rIGF-1 treated group also improved the neovascularization at the injection site, confirmed by CD31 positive staining compared to bulks made of PermacolTM only. The results of this study encourage us to further develop this injectable, bioactive bulking material towards a future therapeutic approach for a minimal invasive and long-lasting treatment of SUI.
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Affiliation(s)
- E Vardar
- Experimental Pediatric Urology, Laboratory for Regenerative Medicine and Pharmacobiology, Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland; Department of Pediatrics, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - G Vythilingam
- Experimental Pediatric Urology, Laboratory for Regenerative Medicine and Pharmacobiology, Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland; Department of Surgery, University of Malaya, Kuala Lumpur, Malaysia
| | - K Pinnagoda
- Department of Pediatrics, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - E M Engelhardt
- Experimental Pediatric Urology, Laboratory for Regenerative Medicine and Pharmacobiology, Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
| | - P Y Zambelli
- Department of Pediatrics, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - J A Hubbell
- Institute for Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - M P Lutolf
- Laboratory of Stem Cell Bioengineering, Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - P Frey
- Experimental Pediatric Urology, Laboratory for Regenerative Medicine and Pharmacobiology, Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
| | - H M Larsson
- Experimental Pediatric Urology, Laboratory for Regenerative Medicine and Pharmacobiology, Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland; Laboratory of Stem Cell Bioengineering, Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland.
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George J, Hsu CC, Nguyen LTB, Ye H, Cui Z. Neural tissue engineering with structured hydrogels in CNS models and therapies. Biotechnol Adv 2019; 42:107370. [PMID: 30902729 DOI: 10.1016/j.biotechadv.2019.03.009] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 02/25/2019] [Accepted: 03/11/2019] [Indexed: 01/27/2023]
Abstract
The development of techniques to create and use multiphase microstructured hydrogels (granular hydrogels or microgels) has enabled the generation of cultures with more biologically relevant architecture and use of structured hydrogels is especially pertinent to the development of new types of central nervous system (CNS) culture models and therapies. We review material choice and the customisation of hydrogel structure, as well as the use of hydrogels in developmental models. Combining the use of structured hydrogel techniques with developmentally relevant tissue culture approaches will enable the generation of more relevant models and treatments to repair damaged CNS tissue architecture.
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Affiliation(s)
- Julian George
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom
| | - Chia-Chen Hsu
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom
| | - Linh Thuy Ba Nguyen
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom
| | - Hua Ye
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom.
| | - Zhanfeng Cui
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom.
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Sheikhi A, de Rutte J, Haghniaz R, Akouissi O, Sohrabi A, Di Carlo D, Khademhosseini A. Microfluidic-enabled bottom-up hydrogels from annealable naturally-derived protein microbeads. Biomaterials 2019; 192:560-568. [PMID: 30530245 PMCID: PMC6400213 DOI: 10.1016/j.biomaterials.2018.10.040] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 10/27/2018] [Accepted: 10/28/2018] [Indexed: 01/15/2023]
Abstract
Naturally-derived proteins, such as collagen, elastin, fibroin, and gelatin (denatured collagen) hold a remarkable promise for tissue engineering and regenerative medicine. Gelatin methacryloyl (GelMA), synthesized from the methacryloyl modification of gelatin, mimicking the structure of extracellular matrix, has widely been used as a universal multi-responsive scaffold for a broad spectrum of applications, spanning from cell therapy to bioprinting and organoid development. Despite the widespread applications of GelMA, coupled stiffness and porosity has inhibited its applications in 3D cellular engineering wherein a stiff scaffold with large pores is demanded (e.g., at concentrations >10 wt%). Taking advantage of the orthogonal thermo-chemical responsivity of GelMA, we have developed microfluidic-assisted annealable GelMA beads, that are first stabilized by temperature-mediated physical crosslinking, flowed to form a scaffold structure, and then chemically annealed using light to fabricate novel bead-based 3D GelMA scaffolds with high mechanical resilience. We show how beaded GelMA (B-GelMA) provides a self-standing microporous environment with an orthogonal void fraction and stiffness, promoting cell adhesion, proliferation, and rapid 3D seeding at a high polymer concentration (∼20 wt%) that would otherwise be impossible for bulk GelMA. B-GelMA, decorated with methacryloyl and arginylglycylaspartic acid (RGD) peptide motifs, does not require additional functionalization for annealing and cell adhesion, providing a versatile biorthogonal platform with orthogonal stiffness and porosity for a myriad of biomedical applications. This technology provides a universal method to convert polymeric materials with orthogonal physico-chemical responsivity to modular platforms, opening a new horizon for converting bulk hydrogels to beaded hydrogels (B-hydrogels) with decoupled porosity and stiffness.
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Affiliation(s)
- Amir Sheikhi
- Department of Bioengineering, University of California - Los Angeles, 410 Westwood Plaza, Los Angeles, CA 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), University of California - Los Angeles, 570 Westwood Plaza, Los Angeles, CA 90095, USA; California NanoSystems Institute (CNSI), University of California - Los Angeles, 570 Westwood Plaza, Los Angeles, CA 90095, USA
| | - Joseph de Rutte
- Department of Bioengineering, University of California - Los Angeles, 410 Westwood Plaza, Los Angeles, CA 90095, USA
| | - Reihaneh Haghniaz
- Department of Bioengineering, University of California - Los Angeles, 410 Westwood Plaza, Los Angeles, CA 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), University of California - Los Angeles, 570 Westwood Plaza, Los Angeles, CA 90095, USA; California NanoSystems Institute (CNSI), University of California - Los Angeles, 570 Westwood Plaza, Los Angeles, CA 90095, USA
| | - Outman Akouissi
- Department of Bioengineering, University of California - Los Angeles, 410 Westwood Plaza, Los Angeles, CA 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), University of California - Los Angeles, 570 Westwood Plaza, Los Angeles, CA 90095, USA; California NanoSystems Institute (CNSI), University of California - Los Angeles, 570 Westwood Plaza, Los Angeles, CA 90095, USA
| | - Alireza Sohrabi
- Department of Bioengineering, University of California - Los Angeles, 410 Westwood Plaza, Los Angeles, CA 90095, USA
| | - Dino Di Carlo
- Department of Bioengineering, University of California - Los Angeles, 410 Westwood Plaza, Los Angeles, CA 90095, USA; California NanoSystems Institute (CNSI), University of California - Los Angeles, 570 Westwood Plaza, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Centre, University of California - Los Angeles, 10833 Le Conte Ave, Los Angeles, CA 90024, USA.
| | - Ali Khademhosseini
- Department of Bioengineering, University of California - Los Angeles, 410 Westwood Plaza, Los Angeles, CA 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), University of California - Los Angeles, 570 Westwood Plaza, Los Angeles, CA 90095, USA; California NanoSystems Institute (CNSI), University of California - Los Angeles, 570 Westwood Plaza, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Centre, University of California - Los Angeles, 10833 Le Conte Ave, Los Angeles, CA 90024, USA; Department of Radiological Sciences, David Geffen School of Medicine, University of California - Los Angeles, 10833 Le Conte Ave, Los Angeles, CA 90095, USA; Department of Chemical and Biomolecular Engineering, University of California - Los Angeles, 5531 Boelter Hall, Los Angeles, CA 90095, USA; Department of Bioindustrial Technologies, College of Animal Bioscience and Technology, Konkuk University, Seoul, 143-701, Republic of Korea.
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Sun W, Lee J, Zhang S, Benyshek C, Dokmeci MR, Khademhosseini A. Engineering Precision Medicine. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1801039. [PMID: 30643715 PMCID: PMC6325626 DOI: 10.1002/advs.201801039] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 09/10/2018] [Indexed: 05/18/2023]
Abstract
Advances in genomic sequencing and bioinformatics have led to the prospect of precision medicine where therapeutics can be advised by the genetic background of individuals. For example, mapping cancer genomics has revealed numerous genes that affect the therapeutic outcome of a drug. Through materials and cell engineering, many opportunities exist for engineers to contribute to precision medicine, such as engineering biosensors for diagnosis and health status monitoring, developing smart formulations for the controlled release of drugs, programming immune cells for targeted cancer therapy, differentiating pluripotent stem cells into desired lineages, fabricating bioscaffolds that support cell growth, or constructing "organs-on-chips" that can screen the effects of drugs. Collective engineering efforts will help transform precision medicine into a more personalized and effective healthcare approach. As continuous progress is made in engineering techniques, more tools will be available to fully realize precision medicine's potential.
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Affiliation(s)
- Wujin Sun
- Department of BioengineeringUniversity of California–Los AngelesLos AngelesCA90095USA
- Center for Minimally Invasive Therapeutics (C‐MIT)California NanoSystems InstituteUniversity of California–Los AngelesLos AngelesCA90095USA
| | - Junmin Lee
- Department of BioengineeringUniversity of California–Los AngelesLos AngelesCA90095USA
- Center for Minimally Invasive Therapeutics (C‐MIT)California NanoSystems InstituteUniversity of California–Los AngelesLos AngelesCA90095USA
| | - Shiming Zhang
- Department of BioengineeringUniversity of California–Los AngelesLos AngelesCA90095USA
- Center for Minimally Invasive Therapeutics (C‐MIT)California NanoSystems InstituteUniversity of California–Los AngelesLos AngelesCA90095USA
| | - Cole Benyshek
- Department of BioengineeringUniversity of California–Los AngelesLos AngelesCA90095USA
- Center for Minimally Invasive Therapeutics (C‐MIT)California NanoSystems InstituteUniversity of California–Los AngelesLos AngelesCA90095USA
| | - Mehmet R. Dokmeci
- Department of BioengineeringUniversity of California–Los AngelesLos AngelesCA90095USA
- Center for Minimally Invasive Therapeutics (C‐MIT)California NanoSystems InstituteUniversity of California–Los AngelesLos AngelesCA90095USA
- Department of RadiologyUniversity of California–Los AngelesLos AngelesCA90095USA
| | - Ali Khademhosseini
- Department of BioengineeringUniversity of California–Los AngelesLos AngelesCA90095USA
- Center for Minimally Invasive Therapeutics (C‐MIT)California NanoSystems InstituteUniversity of California–Los AngelesLos AngelesCA90095USA
- Department of RadiologyUniversity of California–Los AngelesLos AngelesCA90095USA
- Jonsson Comprehensive Cancer CenterUniversity of California–Los Angeles10833 Le Conte AveLos AngelesCA90024USA
- Department of Chemical and Biomolecular EngineeringUniversity of California–Los AngelesLos AngelesCA90095USA
- Center of NanotechnologyDepartment of PhysicsKing Abdulaziz UniversityJeddah21569Saudi Arabia
- Department of Bioindustrial TechnologiesCollege of Animal Bioscience and TechnologyKonkuk UniversitySeoul05029Republic of Korea
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Promoting hepatogenic differentiation of human mesenchymal stem cells using a novel laminin-containing gelatin cryogel scaffold. Biochem Biophys Res Commun 2018; 507:15-21. [PMID: 30409421 DOI: 10.1016/j.bbrc.2018.10.121] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Accepted: 10/19/2018] [Indexed: 01/14/2023]
Abstract
Liver transplantation is the only definitive treatment currently available for acute and chronic liver failure. However, this approach has been restricted by complications including rejection and infection. Tissue engineering approaches using stem cell-derived functional hepatic cells offer a potential alternative. Using biologically compatible scaffolds is an important complementary key to achieve optimal construct for hepatic replacement. In the present study, to optimize the differentiation of human adipose-derived mesenchymal stem cells (ADMSCs) toward hepatocyte-like cells, a previously described gelatin cryogel was optimized and improved by laminin, the major component of basal lamina. The ADMSCs seeded on the scaffold displayed increased attachment in the presence of laminin and the MTT assay showed good compatibility for cell proliferation. The differentiation of stem cells were evaluated using glycogen staining, urea secretion measurement, hepatocyte specific cell surface analysis and gene expression analysis. The results of tests indicated that laminin protein and gelatin cryogel 3D scaffold, each on its own, enhanced hepatogenic differentiation of ADMSCs. However, when laminin immobilized on the gelatin cryogel surface, the differentiation was promoted significantly and the resulting cells showed striking similarity to HepG2 in terms of expressing studied hepatocyte markers.
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Time-dependent behavior in analyte-, temperature-, and shear-sensitive Pluronic PE9400/water systems. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4370-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Ali A, Ahmed S. Recent Advances in Edible Polymer Based Hydrogels as a Sustainable Alternative to Conventional Polymers. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:6940-6967. [PMID: 29878765 DOI: 10.1021/acs.jafc.8b01052] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The over increasing demand of eco-friendly materials to counter various problems, such as environmental issues, economics, sustainability, biodegradability, and biocompatibility, open up new fields of research highly focusing on nature-based products. Edible polymer based materials mainly consisting of polysaccharides, proteins, and lipids could be a prospective contender to handle such problems. Hydrogels based on edible polymer offer many valuable properties compared to their synthetic counterparts. Edible polymers can contribute to the reduction of environmental contamination, advance recyclability, provide sustainability, and thereby increase its applicability along with providing environmentally benign products. This review is highly emphasizing on toward the development of hydrogels from edible polymer, their classification, properties, chemical modification, and their potential applications. The application of edible polymer hydrogels covers many areas including the food industry, agricultural applications, drug delivery to tissue engineering in the biomedical field and provide more safe and attractive products in the pharmaceutical, agricultural, and environmental fields, etc.
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Affiliation(s)
- Akbar Ali
- Department of Chemistry , Jamia Millia Islamia , New Delhi , 110025 , India
| | - Shakeel Ahmed
- Department of Chemistry , Government Degree College Mendhar , Jammu , Jammu and Kashmir , 185211 , India
- Higher Education Department , Government of Jammu and Kashmir , Jammu , 180001 , India
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Wang C, Jia Y, Yang W, Zhang C, Zhang K, Chai Y. Silk fibroin enhances peripheral nerve regeneration by improving vascularization within nerve conduits. J Biomed Mater Res A 2018; 106:2070-2077. [PMID: 29575774 DOI: 10.1002/jbm.a.36390] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 02/11/2018] [Accepted: 02/28/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Chunyang Wang
- Department of Orthopedic Surgery; Shanghai Jiao Tong University Affiliated Sixth People's Hospital; Shanghai China
| | - Yachao Jia
- Department of Orthopedic Surgery; Shanghai Jiao Tong University Affiliated Sixth People's Hospital; Shanghai China
| | - Weichao Yang
- Department of Orthopedic Surgery; Shanghai Jiao Tong University Affiliated Sixth People's Hospital; Shanghai China
| | - Cheng Zhang
- Department of Orthopedic Surgery; Shanghai Jiao Tong University Affiliated Sixth People's Hospital; Shanghai China
| | - Kuihua Zhang
- College of Materials and Textile Engineering; Jiaxing University, Jiaxing; Zhejiang China
| | - Yimin Chai
- Department of Orthopedic Surgery; Shanghai Jiao Tong University Affiliated Sixth People's Hospital; Shanghai China
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Yoon JP, Lee CH, Jung JW, Lee HJ, Lee YS, Kim JY, Park GY, Choi JH, Chung SW. Sustained Delivery of Transforming Growth Factor β1 by Use of Absorbable Alginate Scaffold Enhances Rotator Cuff Healing in a Rabbit Model. Am J Sports Med 2018. [PMID: 29543511 DOI: 10.1177/0363546518757759] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND The failure rate for healing after rotator cuff repair is relatively high. PURPOSE To establish a system for sustained release of transforming growth factor β1 (TGF-β1) using an alginate scaffold and evaluate the effects of the sustained release of TGF-β1 on rotator cuff healing in a rabbit model. STUDY DESIGN Controlled laboratory study. METHODS Before the in vivo animal study, a standard MTS assay was performed to evaluate cell proliferation and metabolic activity on the alginate scaffold. Additionally, an enzyme-linked immunosorbent assay was performed to confirm the capacity of the sustained release of TGF-β1-containing alginate scaffold. Once the in vitro studies were completed, bilateral supraspinatus tendon repairs were performed in 48 rabbits that were allocated to 3 groups (n = 16 each) (group 1, supraspinatus repair only; group 2, supraspinatus repair with TGF-β1 single injection; group 3, supraspinatus repair with TGF-β1 sustained release via an alginate-based delivery system). Biomechanical and histological analyses were performed to evaluate the quality of tendon-to-bone healing at 12 weeks after rotator cuff repair. RESULTS The cell proliferation rate of the alginate scaffold was 122.30% compared with the control (fresh medium) group, which confirmed that the alginate sheet had no cytotoxicity and enhanced cell proliferation. Additionally, the level of TGF-β1 was found to increase with time on the alginate scaffold. Biomechanically, group 3 exhibited a significantly heightened ultimate failure load compared with groups 1 and 2 (group 1, 74.89 ± 29.82 N; group 2, 80.02 ± 34.42 N; group 3, 108.32 ± 32.48 N; P = .011) and more prevalent midsubstance tear compared with group 1 ( P = .028). However, no statistical differences were found in the cross-sectional area of the supraspinatus tendon (group 1, 32.74 ± 9.38; group 2, 33.76 ± 8.89; group 3, 34.80 ± 14.52; P = .882) and ultimate stress (group 1, 2.62 ± 1.13 MPa; group 2, 2.99 ± 1.81 MPa; group 3, 3.62 ± 2.24 MPa; P = .317). Histologically, group 3 exhibited a significantly heightened modified total Bonar score (group 1, 5.00 ± 1.54; group 2, 6.12 ± 1.85; group 3, 7.50 ± 1.31; P = .001). In addition, the tendon-to-bone interface for group 3 demonstrated better collagen orientation, continuity, and organization, and the area of new fibrocartilage formation was more evident in group 3. CONCLUSION At 12 weeks after rotator cuff repair, the authors found improved biomechanical and histological outcomes for sustained release of TGF-β1 using alginate scaffold in a rabbit model. CLINICAL RELEVANCE The alginate-bound growth factor delivery system might improve healing after rotator cuff repair in humans.
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Affiliation(s)
- Jong Pil Yoon
- Department of Orthopaedic Surgery, Kyungpook National University, School of Medicine, Daegu, Republic of Korea
| | - Chang-Hwa Lee
- Department of Orthopaedic Surgery, Kyungpook National University, School of Medicine, Daegu, Republic of Korea
| | - Jae Wook Jung
- Department of Orthopaedic Surgery, Kyungpook National University, School of Medicine, Daegu, Republic of Korea
| | - Hyun-Joo Lee
- Department of Orthopaedic Surgery, Kyungpook National University, School of Medicine, Daegu, Republic of Korea
| | - Yong-Soo Lee
- Department of Orthopaedic Surgery, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Ja-Yeon Kim
- Department of Orthopaedic Surgery, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Ga Young Park
- Department of Bio-fibers and Materials Science, College of Agriculture and Life Science, Kyungpook National University, Daegu, Republic of Korea
| | - Jin Hyun Choi
- Department of Bio-fibers and Materials Science, College of Agriculture and Life Science, Kyungpook National University, Daegu, Republic of Korea
| | - Seok Won Chung
- Department of Orthopaedic Surgery, Konkuk University School of Medicine, Seoul, Republic of Korea
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Zhao Y, Wang Y, Niu C, Zhang L, Li G, Yang Y. Construction of polyacrylamide/graphene oxide/gelatin/sodium alginate composite hydrogel with bioactivity for promoting Schwann cells growth. J Biomed Mater Res A 2018; 106:1951-1964. [DOI: 10.1002/jbm.a.36393] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 02/06/2018] [Accepted: 02/28/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Yinxin Zhao
- Key Laboratory of Neuroregeneration, Ministry of Education; Nantong University; Nantong 226001 People's Republic of China
- Co-innovation Center of Neuroregeneration, Nantong University; Nantong 226001 People's Republic of China
| | - Yingjie Wang
- Key Laboratory of Neuroregeneration, Ministry of Education; Nantong University; Nantong 226001 People's Republic of China
- Co-innovation Center of Neuroregeneration, Nantong University; Nantong 226001 People's Republic of China
| | - Changmei Niu
- Key Laboratory of Neuroregeneration, Ministry of Education; Nantong University; Nantong 226001 People's Republic of China
- Co-innovation Center of Neuroregeneration, Nantong University; Nantong 226001 People's Republic of China
| | - Luzhong Zhang
- Key Laboratory of Neuroregeneration, Ministry of Education; Nantong University; Nantong 226001 People's Republic of China
- Co-innovation Center of Neuroregeneration, Nantong University; Nantong 226001 People's Republic of China
| | - Guicai Li
- Key Laboratory of Neuroregeneration, Ministry of Education; Nantong University; Nantong 226001 People's Republic of China
- Co-innovation Center of Neuroregeneration, Nantong University; Nantong 226001 People's Republic of China
| | - Yumin Yang
- Key Laboratory of Neuroregeneration, Ministry of Education; Nantong University; Nantong 226001 People's Republic of China
- Co-innovation Center of Neuroregeneration, Nantong University; Nantong 226001 People's Republic of China
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Zhang B, Yan W, Zhu Y, Yang W, Le W, Chen B, Zhu R, Cheng L. Nanomaterials in Neural-Stem-Cell-Mediated Regenerative Medicine: Imaging and Treatment of Neurological Diseases. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1705694. [PMID: 29543350 DOI: 10.1002/adma.201705694] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 11/17/2017] [Indexed: 05/24/2023]
Abstract
Patients are increasingly being diagnosed with neuropathic diseases, but are rarely cured because of the loss of neurons in damaged tissues. This situation creates an urgent clinical need to develop alternative treatment strategies for effective repair and regeneration of injured or diseased tissues. Neural stem cells (NSCs), highly pluripotent cells with the ability of self-renewal and potential for multidirectional differentiation, provide a promising solution to meet this demand. However, some serious challenges remaining to be addressed are the regulation of implanted NSCs, tracking their fate, monitoring their interaction with and responsiveness to the tissue environment, and evaluating their treatment efficacy. Nanomaterials have been envisioned as innovative components to further empower the field of NSC-based regenerative medicine, because their unique physicochemical characteristics provide unparalleled solutions to the imaging and treatment of diseases. By building on the advantages of nanomaterials, tremendous efforts have been devoted to facilitate research into the clinical translation of NSC-based therapy. Here, recent work on emerging nanomaterials is highlighted and their performance in the imaging and treatment of neurological diseases is evaluated, comparing the strengths and weaknesses of various imaging modalities currently used. The underlying mechanisms of therapeutic efficacy are discussed, and future research directions are suggested.
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Affiliation(s)
- Bingbo Zhang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai, 200443, China
- Department of Spine Surgery, Tongji Hospital, Institute of Spine and Spinal Cord Injury, Tongji University School of Medicine, Tongji University, Shanghai, 200065, China
| | - Wei Yan
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education, School of Materials Science & Engineering, Hubei University, Wuhan, 430062, China
| | - Yanjing Zhu
- Department of Spine Surgery, Tongji Hospital, Institute of Spine and Spinal Cord Injury, Tongji University School of Medicine, Tongji University, Shanghai, 200065, China
| | - Weitao Yang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai, 200443, China
| | - Wenjun Le
- Institute for Regenerative Medicine, Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai, 200443, China
| | - Bingdi Chen
- Institute for Regenerative Medicine, Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai, 200443, China
| | - Rongrong Zhu
- Department of Spine Surgery, Tongji Hospital, Institute of Spine and Spinal Cord Injury, Tongji University School of Medicine, Tongji University, Shanghai, 200065, China
| | - Liming Cheng
- Department of Spine Surgery, Tongji Hospital, Institute of Spine and Spinal Cord Injury, Tongji University School of Medicine, Tongji University, Shanghai, 200065, China
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Vardar E, Larsson H, Allazetta S, Engelhardt E, Pinnagoda K, Vythilingam G, Hubbell J, Lutolf M, Frey P. Microfluidic production of bioactive fibrin micro-beads embedded in crosslinked collagen used as an injectable bulking agent for urinary incontinence treatment. Acta Biomater 2018; 67:156-166. [PMID: 29197579 DOI: 10.1016/j.actbio.2017.11.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 11/19/2017] [Accepted: 11/20/2017] [Indexed: 01/12/2023]
Abstract
Endoscopic injection of bulking agents has been widely used to treat urinary incontinence, often due to urethral sphincter complex insufficiency. The aim of the study was to develop a novel injectable bioactive collagen-fibrin bulking agent restoring long-term continence by functional muscle tissue regeneration. Fibrin micro-beads were engineered using a droplet microfluidic system. They had an average diameter of 140 μm and recombinant fibrin-binding insulin-like growth factor-1 (α2PI1-8-MMP-IGF-1) was covalently conjugated to the beads. A plasmin fibrin degradation assay showed that 72.5% of the initial amount of α2PI1-8-MMP-IGF-1 loaded into the micro-beads was retained within the fibrin micro-beads. In vitro, the growth factor modified fibrin micro-beads enhanced cell attachment and the migration of human urinary tract smooth muscle cells, however, no change of the cellular metabolic activity was seen. These bioactive micro-beads were mixed with genipin-crosslinked homogenized collagen, acting as a carrier. The collagen concentration, the degree of crosslinking, and the mechanical behavior of this bioactive collagen-fibrin injectable were comparable to reference samples. This novel injectable showed no burst release of the growth factor, had a positive effect on cell behavior and may therefore induce smooth muscle regeneration in vivo, necessary for the functional treatment of stress and other urinary incontinences. STATEMENT OF SIGNIFICANCE Urinary incontinence is involuntary urine leakage, resulting from a deficient function of the sphincter muscle complex. Yet there is no functional cure for this devastating condition using current treatment options. Applied physical and surgical therapies have limited success. In this study, a novel bioactive injectable bulking agent, triggering new muscle regeneration at the injection site, has been evaluated. This injectable consists of cross-linked collagen and fibrin micro-beads, functionalized with bound insulin-like growth factor-1 (α2PI1-8-MMP-IGF-1). These bioactive fibrin micro-beads induced human smooth muscle cell migration in vitro. Thus, this injectable bulking agent is apt to be a good candidate for regeneration of urethral sphincter muscle, ensuring a long-lasting treatment for urinary incontinence.
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Osaki T, Shin Y, Sivathanu V, Campisi M, Kamm RD. In Vitro Microfluidic Models for Neurodegenerative Disorders. Adv Healthc Mater 2018; 7. [PMID: 28881425 DOI: 10.1002/adhm.201700489] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 07/18/2017] [Indexed: 01/09/2023]
Abstract
Microfluidic devices enable novel means of emulating neurodegenerative disease pathophysiology in vitro. These organ-on-a-chip systems can potentially reduce animal testing and substitute (or augment) simple 2D culture systems. Reconstituting critical features of neurodegenerative diseases in a biomimetic system using microfluidics can thereby accelerate drug discovery and improve our understanding of the mechanisms of several currently incurable diseases. This review describes latest advances in modeling neurodegenerative diseases in the central nervous system and the peripheral nervous system. First, this study summarizes fundamental advantages of microfluidic devices in the creation of compartmentalized cell culture microenvironments for the co-culture of neurons, glial cells, endothelial cells, and skeletal muscle cells and in their recapitulation of spatiotemporal chemical gradients and mechanical microenvironments. Then, this reviews neurodegenerative-disease-on-a-chip models focusing on Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis. Finally, this study discusses about current drawbacks of these models and strategies that may overcome them. These organ-on-chip technologies can be useful to be the first line of testing line in drug development and toxicology studies, which can contribute significantly to minimize the phase of animal testing steps.
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Affiliation(s)
- Tatsuya Osaki
- Department of Mechanical EngineeringMassachusetts Institutes of Technology 500 Technology Square MIT Building, Room NE47‐321 Cambridge MA 02139 USA
| | - Yoojin Shin
- Department of Mechanical EngineeringMassachusetts Institutes of Technology 500 Technology Square MIT Building, Room NE47‐321 Cambridge MA 02139 USA
| | - Vivek Sivathanu
- Department of Mechanical EngineeringMassachusetts Institutes of Technology 500 Technology Square MIT Building, Room NE47‐321 Cambridge MA 02139 USA
| | - Marco Campisi
- Department of Mechanical and Aerospace EngineeringPolitecnico di Torino Corso Duca degli Abruzzi 24 10129 Torino Italy
| | - Roger D. Kamm
- Department of Mechanical EngineeringMassachusetts Institutes of Technology 500 Technology Square MIT Building, Room NE47‐321 Cambridge MA 02139 USA
- Department of Biological EngineeringMassachusetts Institutes of Technology 500 Technology Square, MIT Building, Room NE47‐321 Cambridge MA 02139 USA
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Preparation and characterization of chitosan/graphene oxide composite hydrogels for nerve tissue Engineering. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.matpr.2018.04.171] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Prospects of Natural Polymeric Scaffolds in Peripheral Nerve Tissue-Regeneration. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1077:501-525. [DOI: 10.1007/978-981-13-0947-2_27] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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