1
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Shukla K. A study on the synthesis of various polyesters from glycerol. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03221-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Liu X, Li L, Gaihre B, Park S, Li Y, Terzic A, Elder BD, Lu L. Scaffold-Free Spheroids with Two-Dimensional Heteronano-Layers (2DHNL) Enabling Stem Cell and Osteogenic Factor Codelivery for Bone Repair. ACS NANO 2022; 16:2741-2755. [PMID: 35072461 PMCID: PMC9271266 DOI: 10.1021/acsnano.1c09688] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Scaffold-free spheroids offer great potential as a direct supply of cells for bottom-up bone tissue engineering. However, the building of functional spheroids with both cells and bioactive signals remains challenging. Here, we engineered functional spheroids with mesenchymal stem cells (MSCs) and two-dimensional heteronano-layers (2DHNL) that consisted of black phosphorus (BP) and graphene oxide (GO) to create a 3D cell-instructive microenvironment for large defect bone repair. The effects of the engineered 2D materials on the proliferation, osteogenic differentiation of stem cells was evaluated in an in vitro 3D spheroidal microenvironment. Excellent in vivo support of osteogenesis of MSCs, neovascularization, and bone regeneration was achieved after transplanting these engineered spheroids into critical-sized rat calvarial defects. Further loading of osteogenic factor dexamethasone (DEX) on the 2DHNL showed outstanding in vivo osteogenic induction and bone regrowth without prior in vitro culture in osteogenic medium. The shortened overall culture time would be advantageous for clinical translation. These functional spheroids impregnated with engineered 2DHNL enabling stem cell and osteogenic factor codelivery could be promising functional building blocks to provide cells and differential clues in an all-in-one system to create large tissues for time-effective in vivo bone repair.
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Affiliation(s)
- Xifeng Liu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Linli Li
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Bipin Gaihre
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Sungjo Park
- Department of Cardiovascular Diseases and Center for Regenerative Medicine, Mayo Clinic, Rochester, Minnesota 55905, USA
| | - Yong Li
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Andre Terzic
- Department of Cardiovascular Diseases and Center for Regenerative Medicine, Mayo Clinic, Rochester, Minnesota 55905, USA
| | - Benjamin D. Elder
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Lichun Lu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
- Corresponding Author: Lichun Lu - Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA.; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA. Tel.: 507-284-2267 Fax: 507-284-5075
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3
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Liu X, Camilleri ET, Li L, Gaihre B, Rezaei A, Park S, Miller Ii AL, Tilton M, Waletzki BE, Terzic A, Elder BD, Yaszemski MJ, Lu L. Injectable catalyst-free "click" organic-inorganic nanohybrid (click-ON) cement for minimally invasive in vivo bone repair. Biomaterials 2021; 276:121014. [PMID: 34280821 PMCID: PMC8916681 DOI: 10.1016/j.biomaterials.2021.121014] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 06/20/2021] [Accepted: 07/05/2021] [Indexed: 12/16/2022]
Abstract
Injectable polymers have attracted intensive attention in tissue engineering and drug delivery applications. Current injectable polymer systems often require free-radical or heavy-metal initiators and catalysts for the crosslinking process, which may be extremely toxic to the human body. Here, we report a novel polyhedral oligomeric silsesquioxane (POSS) based strain-promoted alkyne-azide cycloaddition (SPAAC) "click" organic-inorganic nanohybrids (click-ON) system that can be click-crosslinked without any toxic initiators or catalysts. The click-ON scaffolds supported excellent adhesion, proliferation, and osteogenesis of stem cells. In vivo evaluation using a rat cranial defect model showed outstanding bone formation with minimum cytotoxicity. Essential osteogenic alkaline phosphatase (ALP) and vascular CD31 marker expression were detected on the defect site, indicating excellent support of in vivo osteogenesis and vascularization. Using salt leaching techniques, an injectable porous click-ON cement was developed to create porous structures and support better in vivo bone regeneration. Beyond defect filling, the click-ON cement also showed promising application for spinal fusion using rabbits as a model. Compared to the current clinically used poly (methyl methacrylate) (PMMA) cement, this click-ON cement showed great advantages of low heat generation, better biocompatibility and biodegradability, and thus has great potential for bone and related tissue engineering applications.
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Affiliation(s)
- Xifeng Liu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | - Emily T Camilleri
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | - Linli Li
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | - Bipin Gaihre
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | - Asghar Rezaei
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | - Sungjo Park
- Department of Cardiovascular Diseases and Center for Regenerative Medicine, Mayo Clinic, Rochester, MN, 55905, USA
| | - A Lee Miller Ii
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | - Maryam Tilton
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | - Brian E Waletzki
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | - Andre Terzic
- Department of Cardiovascular Diseases and Center for Regenerative Medicine, Mayo Clinic, Rochester, MN, 55905, USA
| | - Benjamin D Elder
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, 55905, USA; Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | - Michael J Yaszemski
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | - Lichun Lu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, 55905, USA.
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Catoira MC, González-Payo J, Fusaro L, Ramella M, Boccafoschi F. Natural hydrogels R&D process: technical and regulatory aspects for industrial implementation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2020; 31:64. [PMID: 32696261 PMCID: PMC7374448 DOI: 10.1007/s10856-020-06401-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 07/08/2020] [Indexed: 05/17/2023]
Abstract
Since hydrogel therapies have been introduced into clinic treatment procedures, the biomedical industry has to face the technology transfer and the scale-up of the processes. This will be key in the roadmap of the new technology implementation. Transfer technology and scale-up are already known for some applications but other applications, such as 3D printing, are still challenging. Decellularized tissues offer a lot of advantages when compared to other natural gels, for example they display enhanced biological properties, due to their ability to preserve natural molecules. For this reason, even though their use as a source for bioinks represents a challenge for the scale-up process, it is very important to consider the advantages that originate with overcoming this challenge. Therefore, many aspects that influence the scaling of the industrial process should be considered, like the addition of drugs or cells to the hydrogel, also, the gelling process is important to determine the chemical and physical parameters that must be controlled in order to guarantee a successful process. Legal aspects are also crucial when carrying out the scale-up of the process since they determine the industrial implementation success from the regulatory point of view. In this context, the new law Regulation (EU) 2017/745 on biomedical devices will be considered. This review summarizes the different aspects, including the legal ones, that should be considered when scaling up hydrogels of natural origin, in order to balance these different aspects and to optimize the costs in terms of raw materials and engine.
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Affiliation(s)
- Marta Calvo Catoira
- Center for Translational Research on Autoimmune & Allergic Diseases-CAAD, 28100, Novara, Italy
- Tissuegraft srl, 28100, Novara, Italy
| | - Javier González-Payo
- Telecomunicación, Department of Signal Theory and Communications, University of Vigo, 36310, Vigo, Spain
| | - Luca Fusaro
- Tissuegraft srl, 28100, Novara, Italy
- Department of Health Sciences, University of Piemonte Orientale, 28100, Novara, Italy
| | | | - Francesca Boccafoschi
- Center for Translational Research on Autoimmune & Allergic Diseases-CAAD, 28100, Novara, Italy.
- Tissuegraft srl, 28100, Novara, Italy.
- Department of Health Sciences, University of Piemonte Orientale, 28100, Novara, Italy.
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5
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Liu X, Miller AL, Xu H, Waletzki BE, Lu L. Injectable Catalyst-Free Poly(Propylene Fumarate) System Cross-Linked by Strain Promoted Alkyne-Azide Cycloaddition Click Chemistry for Spine Defect Filling. Biomacromolecules 2019; 20:3352-3365. [PMID: 31398020 PMCID: PMC9009285 DOI: 10.1021/acs.biomac.9b00133] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A new PPF-BCN/hyPCL32-N3 injectable system that can be cross-linked by catalyst-free, strain promoted alkyne-azide cycloaddition (SPAAC) click chemistry was developed for tissue engineering applications. The system consisted of two components: PPF-BCN, poly(propylene fumarate) (PPF) functionalized with (1R,8S,9s)-bicyclo[6.1.0]non-4-yn-9-ylmethanol (BCN-OH), and hyPCL32-N3, a hyper-branched 32-arm poly(ε-caprolactone) (PCL) dendrimer functionalized with azide as the cross-linker core. Fast SPAAC click reaction allowed the desired gelation of the system without using any toxic initiator or catalyst. Compared to the conventional injectable formulation, e.g., poly(methyl methacrylate) (PMMA), our PPF-BCN/hyPCL32-N3 (abbreviated as PFCL-Click) injectable system showed enhanced biocompatibility and low heat generation during cross-linking. After reaction, the cross-linked PFCL-Click scaffolds supported excellent proliferation and differentiation of preosteoblast cells on the surface. The PFCL-Click system can be successfully injected into vertebral bodies of rabbit spine and can be monitored by X-ray imaging after incorporating zirconium dioxide (ZrO2) powder. With these unique advantages, this injectable system has promising potential for bone defect repair and other tissue engineering and regenerative medicine applications.
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Affiliation(s)
- Xifeng Liu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - A. Lee Miller
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Hao Xu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Brian E. Waletzki
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Lichun Lu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
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Sanandiya ND, Vasudevan J, Das R, Lim CT, Fernandez JG. Stimuli-responsive injectable cellulose thixogel for cell encapsulation. Int J Biol Macromol 2019; 130:1009-1017. [DOI: 10.1016/j.ijbiomac.2019.02.135] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 02/22/2019] [Accepted: 02/22/2019] [Indexed: 12/21/2022]
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Townsend JM, Beck EC, Gehrke SH, Berkland CJ, Detamore MS. Flow Behavior Prior to Crosslinking: The Need for Precursor Rheology for Placement of Hydrogels in Medical Applications and for 3D Bioprinting. Prog Polym Sci 2019; 91:126-140. [PMID: 31571701 PMCID: PMC6768569 DOI: 10.1016/j.progpolymsci.2019.01.003] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Hydrogels - water swollen cross-linked networks - have demonstrated considerable promise in tissue engineering and regenerative medicine applications. However, ambiguity over which rheological properties are needed to characterize these gels before crosslinking still exists. Most hydrogel research focuses on the performance of the hydrogel construct after implantation, but for clinical practice, and for related applications such as bioinks for 3D bioprinting, the behavior of the pre-gelled state is also critical. Therefore, the goal of this review is to emphasize the need for better rheological characterization of hydrogel precursor formulations, and standardized testing for surgical placement or 3D bioprinting. In particular, we consider engineering paste or putty precursor solutions (i.e., suspensions with a yield stress), and distinguish between these differences to ease the path to clinical translation. The connection between rheology and surgical application as well as how the use of paste and putty nomenclature can help to qualitatively identify material properties are explained. Quantitative rheological properties for defining materials as either pastes or putties are proposed to enable easier adoption to current methods. Specifically, the three-parameter Herschel-Bulkley model is proposed as a suitable model to correlate experimental data and provide a basis for meaningful comparison between different materials. This model combines a yield stress, the critical parameter distinguishing solutions from pastes (100-2000 Pa) and from putties (>2000 Pa), with power law fluid behavior once the yield stress is exceeded. Overall, successful implementation of paste or putty handling properties to the hydrogel precursor may minimize the surgeon-technology learning time and ultimately ease incorporation into current practice. Furthermore, improved understanding and reporting of rheological properties will lead to better theoretical explanations of how materials affect rheological performances, to better predict and design the next generation of biomaterials.
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Affiliation(s)
- Jakob M. Townsend
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK 73019, USA
| | - Emily C. Beck
- Department of Bioengineering, University of Colorado Anschutz Medical Campus, Denver, CO 80045, USA
| | - Stevin H. Gehrke
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, KS 66045, USA
| | - Cory J. Berkland
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, KS 66045, USA
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, KS 66045, USA
| | - Michael S. Detamore
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK 73019, USA
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8
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Kung FC. Injectable collagen/RGD systems for bone tissue engineering applications. Biomed Mater Eng 2018; 29:241-251. [PMID: 29457597 DOI: 10.3233/bme-171726] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Imbalance crosslink density and polymer concentration gradient is formed within the traditional alginate hydrogel using calcium chloride as a crosslinking agent in external gelation for instantaneously process. In this studying, type I collagen (Col I) blended calcium salt form of poly(γ-glutamic acid) (γCaPGA) was mixing with RGD-modified alginate with convenient gelation process and suitable for practical use. The hydrophilicity of the resulting hydrogels was evaluated through swelling tests, water retention capacity tests, and water vapor permeation tests. Mineralization was qualitatively evaluated by alizarin red dyeing at day 14, verifying the deposition of calcium. The in vitro osteogenic differentiation is monitored by determining the early and late osteocalcin (OCN) and osteopontin (OPN) markers with MG63 cells. Obtained results demonstrated that no extremely changes in mechanical properties. After 14 days of culture, hydrogels significantly stimulated OCN/OPN gene expressions and MG63 cell proliferation. Unusually, γCaPGA with RGD-modified alginate appeared better calcium deposition in 14 days than the other. However, addition of Col I can counterpoise RGD effect in blood coagulation and platelet adhesion made the hydrogel more flexibility and selectively in use. This studying provided that non-covalently crosslinked hydrogel by γCaPGA with alginate can be upgrading by RGD and Col I in water uptake capability, obviously effective for MG63 cells and are remarkably biocompatible and exhibited no cytotoxicity. Moreover, results also displayed the injectable process without complicated procedure, have high cost/performance ratio and have great potential for bone regeneration.
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Affiliation(s)
- Fu-Chen Kung
- Department of Health Healing and Health Marketing, Kainan University, Taoyuan 338, Taiwan. Tel.: +886-3-341-2500 #7971; Fax: +886-3-341-4428; E-mail:
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9
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Xiang P, Wang SS, He M, Han YH, Zhou ZH, Chen DL, Li M, Ma LQ. The in vitro and in vivo biocompatibility evaluation of electrospun recombinant spider silk protein/PCL/gelatin for small caliber vascular tissue engineering scaffolds. Colloids Surf B Biointerfaces 2018; 163:19-28. [DOI: 10.1016/j.colsurfb.2017.12.020] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 11/25/2017] [Accepted: 12/11/2017] [Indexed: 01/29/2023]
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10
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Portnov T, Shulimzon TR, Zilberman M. Injectable hydrogel-based scaffolds for tissue engineering applications. REV CHEM ENG 2017. [DOI: 10.1515/revce-2015-0074] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
AbstractHydrogels are highly hydrated materials that may absorb from 10% to 20% up to hundreds of times their dry weight in water and are composed of three-dimensional hydrophilic polymeric networks that are similar to those in natural tissue. The structural integrity of hydrogels depends on cross-links formed between the polymer chains. Hydrogels have been extensively explored as injectable cell delivery systems, owing to their high tissue-like water content, ability to mimic extracellular matrix, homogeneously encapsulated cells, efficient mass transfer, amenability to chemical and physical modifications, and minimally invasive delivery. A variety of naturally and synthetically derived materials have been used to form injectable hydrogels for tissue engineering applications. The current review article focuses on these biomaterials, on the design parameters of injectable scaffolds, and on the
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11
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Liu X, Miller AL, Fundora KA, Yaszemski MJ, Lu L. Poly(ε-caprolactone) Dendrimer Cross-Linked via Metal-Free Click Chemistry: Injectable Hydrophobic Platform for Tissue Engineering. ACS Macro Lett 2016; 5:1261-1265. [PMID: 35614737 DOI: 10.1021/acsmacrolett.6b00736] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The fabrication of injectable self-cross-linkable hyperbranched poly(ε-caprolactone) (hyPCL) formulation using metal-free click chemistry was reported. The cross-linking between hyPCL32-(1R,8S,9s)-bicyclo[6.1.0]non-4-yn-9-ylmethanol (hyPCL32-BCN) and hyPCL32-azide (hyPCL32-N3) components was proceeded via strain-promoted alkyne-azide cycloaddition (SPAAC) click reaction. Cross-linking was tested to proceed effectively with the exclusion of any toxic cross-linking agents. Strong mechanical properties and excellent biocompatibility were demonstrated for the cross-linked substrates. These newly synthesized dendrimers may have broad applications in tissue engineering such as bone defect repair. In addition, the introduction of metal-free click chemistry to hydrophobic polymers provides an attractive new strategy for developing injectable stiff polymer formulations besides hydrogels for biomedical applications.
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Affiliation(s)
- Xifeng Liu
- Departments of †Physiology and Biomedical Engineering and ‡Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - A Lee Miller
- Departments of †Physiology and Biomedical Engineering and ‡Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - Kevin A. Fundora
- Departments of †Physiology and Biomedical Engineering and ‡Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - Michael J. Yaszemski
- Departments of †Physiology and Biomedical Engineering and ‡Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States
| | - Lichun Lu
- Departments of †Physiology and Biomedical Engineering and ‡Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States
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12
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Jeyapriya M, Meenarathi B, Anbarasan R. Synthesis, characterization, catalytic and splinting activity of nano Ag end capped l-glutathione bridged amphiphilic diblock copolymer. J Appl Polym Sci 2016. [DOI: 10.1002/app.43804] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Muthuramalingam Jeyapriya
- Department of Polymer Technology; Kamaraj College of Engineering and Technology; Virudhunagar Tamilnadu 626001 India
| | - Balakrishnan Meenarathi
- Department of Polymer Technology; Kamaraj College of Engineering and Technology; Virudhunagar Tamilnadu 626001 India
| | - Ramasamy Anbarasan
- Department of Polymer Technology; Kamaraj College of Engineering and Technology; Virudhunagar Tamilnadu 626001 India
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13
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Kim H, Lee J. Strategies to Maximize the Potential of Marine Biomaterials as a Platform for Cell Therapy. Mar Drugs 2016; 14:E29. [PMID: 26821034 PMCID: PMC4771982 DOI: 10.3390/md14020029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 01/15/2016] [Accepted: 01/19/2016] [Indexed: 01/31/2023] Open
Abstract
Marine biopolymers have been explored as a promising cell therapy system for efficient cell delivery and tissue engineering. However, the marine biomaterial-based systems themselves have exhibited limited performance in terms of maintenance of cell viability and functions, promotion of cell proliferation and differentiation as well as cell delivery efficiency. Thus, numerous novel strategies have been devised to improve cell therapy outcomes. The strategies include optimization of physical and biochemical properties, provision of stimuli-responsive functions, and design of platforms for efficient cell delivery and tissue engineering. These approaches have demonstrated substantial improvement of therapeutic outcomes in a variety of research settings. In this review, therefore, research progress made with marine biomaterials as a platform for cell therapy is reported along with current research directions to further advance cell therapies as a tool to cure incurable diseases.
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Affiliation(s)
- Hyeongmin Kim
- Pharmaceutical Formulation Design Laboratory, College of Pharmacy, Chung-Ang University, Seoul 156-756, Korea.
- Bio-Integration Research Center for Nutra-Pharmaceutical Epigenetics, Chung-Ang University, Seoul 156-756, Korea.
| | - Jaehwi Lee
- Pharmaceutical Formulation Design Laboratory, College of Pharmacy, Chung-Ang University, Seoul 156-756, Korea.
- Bio-Integration Research Center for Nutra-Pharmaceutical Epigenetics, Chung-Ang University, Seoul 156-756, Korea.
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14
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Reactive hydroxyapatite fillers for pectin biocomposites. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 45:154-61. [DOI: 10.1016/j.msec.2014.09.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 05/07/2014] [Accepted: 09/03/2014] [Indexed: 11/18/2022]
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15
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Feng P, Deng Y, Duan S, Gao C, Shuai C, Peng S. Liquid phase sintered ceramic bone scaffolds by combined laser and furnace. Int J Mol Sci 2014; 15:14574-90. [PMID: 25196598 PMCID: PMC4159869 DOI: 10.3390/ijms150814574] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 07/29/2014] [Accepted: 08/14/2014] [Indexed: 11/25/2022] Open
Abstract
Fabrication of mechanically competent bioactive scaffolds is a great challenge in bone tissue engineering. In this paper, β-tricalcium phosphate (β-TCP) scaffolds were successfully fabricated by selective laser sintering combined with furnace sintering. Bioglass 45S5 was introduced in the process as liquid phase in order to improve the mechanical and biological properties. The results showed that sintering of β-TCP with the bioglass revealed some features of liquid phase sintering. The optimum amount of 45S5 was 5 wt %. At this point, the scaffolds were densified without defects. The fracture toughness, compressive strength and stiffness were 1.67 MPam1/2, 21.32 MPa and 264.32 MPa, respectively. Bone like apatite layer was formed and the stimulation for apatite formation was increased with increase in 45S5 content after soaking in simulated body fluid, which indicated that 45S5 could improve the bioactivity. Furthermore, MG-63 cells adhered and spread well, and proliferated with increase in the culture time.
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Affiliation(s)
- Pei Feng
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Youwen Deng
- Department of Spine Surgery, the Second Xiangya Hospital of Central South University, Changsha 410011, China.
| | - Songlin Duan
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Chengde Gao
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Cijun Shuai
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Shuping Peng
- Cancer Research Institute, Central South University, Changsha 410078, China.
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16
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Guerreiro SG, Oliveira MJ, Barbosa MA, Soares R, Granja PL. Neonatal Human Dermal Fibroblasts Immobilized in RGD–Alginate Induce Angiogenesis. Cell Transplant 2014; 23:945-57. [DOI: 10.3727/096368913x670183] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Promoting angiogenesis in a damaged tissue is a major challenge for tissue regeneration. Recent findings in tissue engineering suggest that fibroblasts (FBs) play an important role in orchestrating the angiogenic process. Fibroblasts maintain the structural integrity of connective tissue by continuously secreting growth factors and extracellular matrix precursors, which are essential for endothelial cell (EC) adhesion and spreading, thus playing a crucial role in angiogenesis. We hypothesized that FBs immobilized in alginate gels grafted with the RGD peptidic sequence could influence the recruitment of ECs to improve vascularization. In this work, the modulation of immobilized human FBs within the 3D synthetic extracellular matrix was assessed. Experiments using cocultures of ECs and FBs in indirect contact as well as angiogenic assays were performed to assess the influence of FBs immobilized in RGD–alginate in ECs' viability, stabilization, sprouting, and assembly into capillary-like structures. This study demonstrates the ability of FBs immobilized within RGD–alginate microspheres to modulate and support capillary-like structures' assembly. These findings indicate that the microenvironment created by these stromal cells in the scaffold modulates capillary morphogenesis, thus stimulating angiogenesis in situ and can potentially be used in regenerative medicine in clinical scenarios where vascularization is essential.
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Affiliation(s)
- Susana G. Guerreiro
- INEB – Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Universidade do Porto, Faculdade de Medicina (FMUP), Departamento de Bioquímica, Porto, Portugal
- Universidade do Porto, Faculdade de Engenharia (FEUP), Porto, Portugal
| | - Maria J. Oliveira
- INEB – Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Universidade do Porto, Faculdade de Medicina (FMUP), Departamento de Anatomia Patológica, Porto, Portugal
| | - Mário A. Barbosa
- INEB – Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Universidade do Porto, Faculdade de Engenharia (FEUP), Porto, Portugal
- Universidade do Porto, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Porto, Portugal
| | - Raquel Soares
- Universidade do Porto, Faculdade de Medicina (FMUP), Departamento de Bioquímica, Porto, Portugal
| | - Pedro L. Granja
- INEB – Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Universidade do Porto, Faculdade de Engenharia (FEUP), Porto, Portugal
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17
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Bidarra SJ, Barrias CC, Granja PL. Injectable alginate hydrogels for cell delivery in tissue engineering. Acta Biomater 2014; 10:1646-62. [PMID: 24334143 DOI: 10.1016/j.actbio.2013.12.006] [Citation(s) in RCA: 339] [Impact Index Per Article: 33.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 11/28/2013] [Accepted: 12/05/2013] [Indexed: 12/16/2022]
Abstract
Alginate hydrogels are extremely versatile and adaptable biomaterials, with great potential for use in biomedical applications. Their extracellular matrix-like features have been key factors for their choice as vehicles for cell delivery strategies aimed at tissue regeneration. A variety of strategies to decorate them with biofunctional moieties and to modulate their biophysical properties have been developed recently, which further allow their tailoring to the desired application. Additionally, their potential use as injectable materials offers several advantages over preformed scaffold-based approaches, namely: easy incorporation of therapeutic agents, such as cells, under mild conditions; minimally invasive local delivery; and high contourability, which is essential for filling in irregular defects. Alginate hydrogels have already been explored as cell delivery systems to enhance regeneration in different tissues and organs. Here, the in vitro and in vivo potential of injectable alginate hydrogels to deliver cells in a targeted fashion is reviewed. In each example, the selected crosslinking approach, the cell type, the target tissue and the main findings of the study are highlighted.
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Affiliation(s)
- Sílvia J Bidarra
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal.
| | - Cristina C Barrias
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal.
| | - Pedro L Granja
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal; FEUP - Faculdade de Engenharia da Universidade do Porto, Departamento de Engenharia Metalúrgica e de Materiais, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal; ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
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Guerreiro SG, Brochhausen C, Negrão R, Barbosa MA, Unger RE, Kirkpatrick CJ, Soares R, Granja PL. Implanted neonatal human dermal fibroblasts influence the recruitment of endothelial cells in mice. BIOMATTER 2014; 2:43-52. [PMID: 23507785 DOI: 10.4161/biom.20063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The vascularization of new tissue within a reasonable time is a crucial prerequisite for the success of different cell- and material-based strategies. Considering that angiogenesis is a multi-step process involving humoral and cellular regulatory components, only in vivo assays provide the adequate information about vessel formation and the recruitment of endothelial cells. The present study aimed to investigate if neonatal human dermal fibroblasts could influence in vivo neovascularization. Results obtained showed that fibroblasts were able to recruit endothelial cells to vascularize the implanted matrix, which was further colonized by murine functional blood vessels after one week. The vessels exhibited higher levels of hemoglobin, compared with the control matrix, implanted without fibroblasts, in which no vessel formation could be observed. No significant differences were detected in systemic inflammation. The presence of vessels originated from the host vasculature suggested that host vascular response was involved, which constitutes a fundamental aspect in the process of neovascularization. Fibroblasts implanted within matrigel increased the presence of endothelial cells with positive staining for CD31 and for CD34 and the production of collagen influencing the angiogenic process and promoting the formation of microvessels. New strategies in tissue engineering could be delineated with improved angiogenesis using neonatal fibroblasts.
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Affiliation(s)
- Susana G Guerreiro
- Instituto de Engenharia Biomédica (INEB), Universidade do Porto, Porto, Portugal
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19
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Injectable pectin hydrogels produced by internal gelation: pH dependence of gelling and rheological properties. Carbohydr Polym 2014; 103:339-47. [DOI: 10.1016/j.carbpol.2013.12.057] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 12/10/2013] [Accepted: 12/11/2013] [Indexed: 12/19/2022]
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20
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Fonseca KB, Gomes DB, Lee K, Santos SG, Sousa A, Silva EA, Mooney DJ, Granja PL, Barrias CC. Injectable MMP-sensitive alginate hydrogels as hMSC delivery systems. Biomacromolecules 2013; 15:380-90. [PMID: 24345197 DOI: 10.1021/bm4016495] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Hydrogels with the potential to provide minimally invasive cell delivery represent a powerful tool for tissue-regeneration therapies. In this context, entrapped cells should be able to escape the matrix becoming more available to actively participate in the healing process. Here, we analyzed the performance of proteolytically degradable alginate hydrogels as vehicles for human mesenchymal stem cells (hMSC) transplantation. Alginate was modified with the matrix metalloproteinase (MMP)-sensitive peptide Pro-Val-Gly-Leu-Iso-Gly (PVGLIG), which did not promote dendritic cell maturation in vitro, neither free nor conjugated to alginate chains, indicating low immunogenicity. hMSC were entrapped within MMP-sensitive and MMP-insensitive alginate hydrogels, both containing cell-adhesion RGD peptides. Softer (2 wt % alginate) and stiffer (4 wt % alginate) matrices were tested. When embedded in a Matrigel layer, hMSC-laden MMP-sensitive alginate hydrogels promoted more extensive outward cell migration and invasion into the tissue mimic. In vivo, after 4 weeks of subcutaneous implantation in a xenograft mouse model, hMSC-laden MMP-sensitive alginate hydrogels showed higher degradation and host tissue invasion than their MMP-insensitive equivalents. In both cases, softer matrices degraded faster than stiffer ones. The transplanted hMSC were able to produce their own collagenous extracellular matrix, and were located not only inside the hydrogels, but also outside, integrated in the host tissue. In summary, injectable MMP-sensitive alginate hydrogels can act as localized depots of cells and confer protection to transplanted cells while facilitating tissue regeneration.
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Affiliation(s)
- Keila B Fonseca
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto , Rua do Campo Alegre 823, 4150-180 Porto, Portugal
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Lee EJ, Kasper FK, Mikos AG. Biomaterials for tissue engineering. Ann Biomed Eng 2013; 42:323-37. [PMID: 23820768 DOI: 10.1007/s10439-013-0859-6] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Accepted: 06/24/2013] [Indexed: 01/24/2023]
Abstract
Biomaterials serve as an integral component of tissue engineering. They are designed to provide architectural framework reminiscent of native extracellular matrix in order to encourage cell growth and eventual tissue regeneration. Bone and cartilage represent two distinct tissues with varying compositional and mechanical properties. Despite these differences, both meet at the osteochondral interface. This article presents an overview of current biomaterials employed in bone and cartilage applications, discusses some design considerations, and alludes to future prospects within this field of research.
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Affiliation(s)
- Esther J Lee
- Department of Bioengineering, Rice University, MS 142, P.O. Box 1892, Houston, TX, 77251-1892, USA
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New perspectives in cell delivery systems for tissue regeneration: natural-derived injectable hydrogels. J Appl Biomater Funct Mater 2012; 10:67-81. [PMID: 22865572 DOI: 10.5301/jabfm.2012.9418] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2012] [Indexed: 01/11/2023] Open
Abstract
Natural polymers, because of their biocompatibility, availability, and physico-chemical properties have been the materials of choice for the fabrication of injectable hydrogels for regenerative medicine. In particular, they are appealing materials for delivery systems and provide sustained and controlled release of drugs, proteins, gene, cells, and other active biomolecules immobilized.In this work, the use of hydrogels obtained from natural source polymers as cell delivery systems is discussed. These materials were investigated for the repair of cartilage, bone, adipose tissue, intervertebral disc, neural, and cardiac tissue. Papers from the last ten years were considered, with a particular focus on the advances of the last five years. A critical discussion is centered on new perspectives and challenges in the regeneration of specific tissues, with the aim of highlighting the limits of current systems and possible future advancements.
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