101
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Alshehri SM, Shakeel F, Ibrahim MA, Elzayat EM, Altamimi M, Mohsin K, Almeanazel OT, Alkholief M, Alshetaili A, Alsulays B, Alanazi FK, Alsarra IA. Dissolution and bioavailability improvement of bioactive apigenin using solid dispersions prepared by different techniques. Saudi Pharm J 2018; 27:264-273. [PMID: 30766439 PMCID: PMC6362180 DOI: 10.1016/j.jsps.2018.11.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Accepted: 11/13/2018] [Indexed: 10/31/2022] Open
Abstract
Apigenin (APG) is a poorly soluble bioactive compound/nutraceutical which shows poor bioavailability upon oral administration. Hence, the objective of this research work was to develop APG solid dispersions (SDs) using different techniques with the expectation to obtain improvement in its in vitro dissolution rate and in vivo bioavailability upon oral administration. Different SDs of APG were prepared by microwave, melted and kneaded technology using pluronic-F127 (PL) as a carrier. Prepared SDs were characterized using "thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), Fourier transform infra-red (FTIR) spectrometer, powder X-ray diffraction (PXRD) and scanning electron microscopy (SEM)". After characterization, prepared SDs of APG were studied for in vitro drug release/dissolution profile and in vivo pharmacokinetic studies. The results of TGA, DSC, FTIR, PXRD and SEM indicated successful formation of APG SDs. In vitro dissolution experiments suggested significant release of APG from all SDs (67.39-84.13%) in comparison with control (32.74%). Optimized SD of APG from each technology was subjected to in vivo pharmacokinetic study in rats. The results indicated significant improvement in oral absorption of APG from SD prepared using microwave and melted technology in comparison with pure drug and commercial capsule. The enhancement in oral bioavailability of APG from microwave SD (319.19%) was 3.19 fold as compared with marketed capsule (100.00%). Significant enhancement in the dissolution rate and oral absorption of APG from SD suggested that developed SD systems can be successfully used for oral drug delivery system of APG.
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Affiliation(s)
- Sultan M Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Faiyaz Shakeel
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Mohamed A Ibrahim
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Ehab M Elzayat
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Mohammad Altamimi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Kazi Mohsin
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Osaid T Almeanazel
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Musaed Alkholief
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Abdullah Alshetaili
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Bader Alsulays
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Fars K Alanazi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Ibrahim A Alsarra
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
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102
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Yogev S, Shabtay-Orbach A, Nyska A, Mizrahi B. Local Toxicity of Topically Administrated Thermoresponsive Systems: In Vitro Studies with In Vivo Correlation. Toxicol Pathol 2018; 47:426-432. [PMID: 30407122 DOI: 10.1177/0192623318810199] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Thermoresponsive materials have the ability to respond to a small change in temperature-a property that makes them useful in a wide range of applications and medical devices. Although very promising, there is only little conclusive data about the cytotoxicity and tissue toxicity of these materials. This work studied the biocompatibility of three Food and Drug Administration approved thermoresponsive polymers: poly( N-isopropyl acrylamide), poly(ethylene glycol)-poly(propylene glycol)-poly(ethylene glycol) tri-block copolymer, and poly(lactic acid-co-glycolic acid) and poly(ethylene glycol) tri-block copolymer. Fibroblast NIH 3T3 and HaCaT keratinocyte cells were used for the cytotoxicity testing and a mouse model for the in vivo evaluation. In vivo results generally showed similar trends as the results seen in vitro, with all tested materials presenting a satisfactory biocompatibility in vivo. pNIPAM, however, showed the highest toxicity both in vitro and in vivo, which was explained by the release of harmful monomers and impurities. More data focusing on the biocompatibility of novel thermoresponsive biomaterials will facilitate the use of existing and future medical devices.
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Affiliation(s)
- Sivan Yogev
- 1 Faculty of Biotechnology and Food Engineering, Technion, Haifa, Israel
| | | | | | - Boaz Mizrahi
- 1 Faculty of Biotechnology and Food Engineering, Technion, Haifa, Israel
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103
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Rafael D, Gener P, Andrade F, Seras-Franzoso J, Montero S, Fernández Y, Hidalgo M, Arango D, Sayós J, Florindo HF, Abasolo I, Schwartz S, Videira M. AKT2 siRNA delivery with amphiphilic-based polymeric micelles show efficacy against cancer stem cells. Drug Deliv 2018; 25:961-972. [PMID: 29667444 PMCID: PMC6060707 DOI: 10.1080/10717544.2018.1461276] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Development of RNA interference-based therapies with appropriate therapeutic window remains a challenge for advanced cancers. Because cancer stem cells (CSC) are responsible of sustaining the metastatic spread of the disease to distal organs and the progressive gain of resistance of advanced cancers, new anticancer therapies should be validated specifically for this subpopulation of cells. A new amphihilic-based gene delivery system that combines Pluronic® F127 micelles with polyplexes spontaneously formed by electrostatic interaction between anionic siRNA and cationic polyethylenimine (PEI) 10K, was designed (PM). Resultant PM gather the requirements for an efficient and safe transport of siRNA in terms of its physicochemical characteristics, internalization capacity, toxicity profile and silencing efficacy. PM were loaded with a siRNA against AKT2, an important oncogene involved in breast cancer tumorigenesis, with a special role in CSC malignancy. Efficacy of siAKT2-PM was validated in CSC isolated from two breast cancer cell lines: MCF-7 and Triple Negative MDA-MB-231 corresponding to an aggressive subtype of breast cancer. In both cases, we observed significant reduction on cell invasion capacity and strong inhibition of mammosphere formation after treatment. These results prompt AKT2 inhibition as a powerful therapeutic target against CSC and pave the way to the appearance of more effective nanomedicine-based gene therapies aimed to prevent CSC-related tumor recurrence.
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Affiliation(s)
- Diana Rafael
- a Research Institute for Medicines and Pharmaceutical Sciences, Faculdade de Farmácia , Universidade de Lisboa (iMed.ULisboa) , Lisbon , Portugal.,b Drug Delivery and Targeting Group , Molecular Biology and Biochemistry Research Centre for Nanomedicine (CIBBIM-Nanomedicine), Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona , Barcelona , Spain
| | - Petra Gener
- b Drug Delivery and Targeting Group , Molecular Biology and Biochemistry Research Centre for Nanomedicine (CIBBIM-Nanomedicine), Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona , Barcelona , Spain.,c Networking Research Centre for Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III , Zaragoza , Spain
| | - Fernanda Andrade
- c Networking Research Centre for Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III , Zaragoza , Spain
| | - Joaquin Seras-Franzoso
- b Drug Delivery and Targeting Group , Molecular Biology and Biochemistry Research Centre for Nanomedicine (CIBBIM-Nanomedicine), Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona , Barcelona , Spain
| | - Sara Montero
- b Drug Delivery and Targeting Group , Molecular Biology and Biochemistry Research Centre for Nanomedicine (CIBBIM-Nanomedicine), Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona , Barcelona , Spain
| | - Yolanda Fernández
- b Drug Delivery and Targeting Group , Molecular Biology and Biochemistry Research Centre for Nanomedicine (CIBBIM-Nanomedicine), Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona , Barcelona , Spain.,c Networking Research Centre for Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III , Zaragoza , Spain.,d Functional Validation and Preclinical Research (FVPR) , CIBBIM-Nanomedicine, Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona , Barcelona , Spain
| | - Manuel Hidalgo
- e Division of Hematology and Oncology , Rosenberg Clinical Cancer Center Beth Israel Deaconess Medical Center , Boston , MA , USA
| | - Diego Arango
- f Biomedical Research in Digestive Tract Tumors, CIBBIM-Nanomedicine, Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona , Barcelona , Spain
| | - Joan Sayós
- g Immune Regulation and Immunotherapy , CIBBIM-Nanomedicine, Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona , Barcelona , Spain
| | - Helena F Florindo
- a Research Institute for Medicines and Pharmaceutical Sciences, Faculdade de Farmácia , Universidade de Lisboa (iMed.ULisboa) , Lisbon , Portugal
| | - Ibane Abasolo
- b Drug Delivery and Targeting Group , Molecular Biology and Biochemistry Research Centre for Nanomedicine (CIBBIM-Nanomedicine), Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona , Barcelona , Spain.,c Networking Research Centre for Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III , Zaragoza , Spain.,d Functional Validation and Preclinical Research (FVPR) , CIBBIM-Nanomedicine, Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona , Barcelona , Spain
| | - Simó Schwartz
- b Drug Delivery and Targeting Group , Molecular Biology and Biochemistry Research Centre for Nanomedicine (CIBBIM-Nanomedicine), Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona , Barcelona , Spain.,c Networking Research Centre for Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III , Zaragoza , Spain
| | - Mafalda Videira
- a Research Institute for Medicines and Pharmaceutical Sciences, Faculdade de Farmácia , Universidade de Lisboa (iMed.ULisboa) , Lisbon , Portugal
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104
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López-Marcial GR, Zeng AY, Osuna C, Dennis J, García JM, O'Connell GD. Agarose-Based Hydrogels as Suitable Bioprinting Materials for Tissue Engineering. ACS Biomater Sci Eng 2018; 4:3610-3616. [PMID: 33450800 DOI: 10.1021/acsbiomaterials.8b00903] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Hydrogels are useful materials as scaffolds for tissue engineering applications. Using hydrogels with additive manufacturing techniques has typically required the addition of techniques such as cross-linking or printing in sacrificial materials that negatively impact tissue growth to remedy inconsistencies in print fidelity. Thus, there is a need for bioinks that can directly print cell-laden constructs. In this study, agarose-based hydrogels commonly used for cartilage tissue engineering were compared to Pluronic, a hydrogel with established printing capabilities. Moreover, new material mixtures were developed for bioprinting by combining alginate and agarose. We compared mechanical and rheological properties, including yield stress, storage modulus, and shear thinning, as well as construct shape fidelity to assess their potential as a bioink for cell-based tissue engineering. The rheological properties and printability of agarose-alginate gels were statistically similar to those of Pluronic for all tests (p > 0.05). Alginate-agarose composites prepared with 5% w/v (3:2 agarose to alginate ratio) demonstrated excellent cell viability over a 28-day culture period (>∼70% cell survival at day 28) as well matrix production over the same period. Therefore, agarose-alginate mixtures showed the greatest potential as an effective bioink for additive manufacturing of biological materials for cartilage tissue engineering.
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Affiliation(s)
- Gabriel R López-Marcial
- Department of Mechanical Engineering, University of California, Berkeley, California 94720, United States
| | - Anne Y Zeng
- Department of Mechanical Engineering, University of California, Berkeley, California 94720, United States
| | - Carlos Osuna
- Department of Mechanical Engineering, University of California, San Diego, California 92093, United States
| | - Joseph Dennis
- Department of Chemistry and Materials, IBM Almaden Research Center, San Jose, California 95120, United States
| | - Jeannette M García
- Department of Chemistry and Materials, IBM Almaden Research Center, San Jose, California 95120, United States
| | - Grace D O'Connell
- Department of Mechanical Engineering, University of California, Berkeley, California 94720, United States.,Department of Orthopaedic Surgery, University of California, San Francisco, California 94143, United States
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105
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Jaszczak M, Wach R, Maras P, Dudek M, Kozicki M. Substituting gelatine with Pluronic F-127 matrix in 3D polymer gel dosimeters can improve nuclear magnetic resonance, thermal and optical properties. Phys Med Biol 2018; 63:175010. [PMID: 30102250 DOI: 10.1088/1361-6560/aad9d5] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This work discusses the substitution of a gelatine physical gel matrix with a matrix made of poly(ethylene oxide)-block-poly(propylene oxide)-block-poly(ethylene oxide) (Pluronic F-127) in five 3D radiotherapy polymer gel dosimeters: MAGAT, PAGAT, NIPAM, VIPARnd (VIP) and VIPARCT (VIC). The current research outcomes showed that not each polymer gel dosimeter could be manufactured with Pluronic F-127. Two of the polymer gel dosimeters (PAGAT and VIP) containing the Pluronic F-127 matrix allowed for some proper dose response for radiotherapy dosimetry (a response to a dose range of e.g. 0‒50 Gy). The new best performing Pluronic-based polymer gel dosimeters were characterised by improved nuclear magnetic resonance properties, when being compared to gels with gelatine matrix at the same monomer content. These are: (i) a ~33% higher dose sensitivity; (ii) a comparable or slightly higher linear and dynamic dose range and (iii) a lower (new VIP composition, VIP3) or equivocal (new PAGAT composition, PAGAT2-Pluronic) dose threshold. However, there might be optimised gelatine based polymer dosimeters demonstrating even better sensitivity. UV-vis spectrophotometry measurements revealed that Pluronic matrices ensure six-times lower (VIP3-Pluronic) and eight-times lower (PAGAT2-Pluronic) absorbance (at 400 nm) of non-irradiated gels compared to gelatine matrices, which makes the new polymer gel dosimeters optically improved in comparison to their corresponding gelatine-based compositions. The differences in absorption reduce for higher wavelengths. Differential scanning calorimetry measurements revealed the following temperature stability ranges for the gels: (i) VIP with gelatine matrix: 0 °C‒26 °C, (ii) VIP3 with Pluronic matrix: 13.8 °C-55.2 °C, (iii) PAGAT2 with gelatine matrix: 0 °C-80 °C and (iv) PAGAT2 with Pluronic matrix: 21.4 °C-55.2 °C. In conclusion, Pluronic F-127 is an attractive co-polymer to serve as a substitute for the gelatine matrix in some 3D polymer gel dosimeters.
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Affiliation(s)
- Malwina Jaszczak
- Institute of Materials Science and Engineering, Lodz University of Technology, Lodz, Poland
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106
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Haring AP, Tong Y, Halper J, Johnson BN. Programming of Multicomponent Temporal Release Profiles in 3D Printed Polypills via Core-Shell, Multilayer, and Gradient Concentration Profiles. Adv Healthc Mater 2018; 7:e1800213. [PMID: 29888441 DOI: 10.1002/adhm.201800213] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/20/2018] [Indexed: 02/03/2023]
Abstract
Additive manufacturing (AM) appears poised to provide novel pharmaceutical technology and controlled release systems, yet understanding the effects of processing and post-processing operations on pill design, quality, and performance remains a significant barrier. This paper reports a study of the relationship between programmed concentration profile and resultant temporal release profile using a 3D printed polypill system consisting of a Food and Drug Administration (FDA) approved excipient (Pluronic F-127) and therapeutically relevant dosages of three commonly used oral agents for treatment of type 2 diabetes (300-500 mg per pill). A dual-extrusion hydrogel microextrusion process enables the programming of three unique concentration profiles, including core-shell, multilayer, and gradient structures. Experimental and computational studies of diffusive mass transfer processes reveal that programmed concentration profiles are dynamic throughout both pill 3D printing and solidification. Spectrophotometric assays show that the temporal release profiles could be selectively programmed to exhibit delayed, pulsed, or constant profiles over a 5 h release period by utilizing the core-shell, multilayer, and gradient distributions, respectively. Ultimately, this work provides new insights into the mass transfer processes that affect design, quality, and performance of spatially graded controlled release systems, as well as demonstrating the potential to create disease-specific polypill technology with programmable temporal release profiles.
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Affiliation(s)
- Alexander P. Haring
- Department of Industrial and Systems Engineering Macromolecules Innovation Institute Virginia Tech Blacksburg VA 24061 USA
| | - Yuxin Tong
- Department of Industrial and Systems Engineering Virginia Tech Blacksburg VA 24061 USA
| | - Justin Halper
- Department of Industrial and Systems Engineering Virginia Tech Blacksburg VA 24061 USA
| | - Blake N. Johnson
- Department of Industrial and Systems Engineering Department of Chemical Engineering Department of Materials Science and Engineering Macromolecules Innovation Institute, Virginia Tech Blacksburg VA 24061 USA
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107
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Abstract
The therapeutic replacement of diseased tubular tissue is hindered by the availability and suitability of current donor, autologous and synthetically derived protheses. Artificially created, tissue engineered, constructs have the potential to alleviate these concerns with reduced autoimmune response, high anatomical accuracy, long-term patency and growth potential. The advent of 3D bioprinting technology has further supplemented the technological toolbox, opening up new biofabrication research opportunities and expanding the therapeutic potential of the field. In this review, we highlight the challenges facing those seeking to create artificial tubular tissue with its associated complex macro- and microscopic architecture. Current biofabrication approaches, including 3D printing techniques, are reviewed and future directions suggested.
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108
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Oderinde O, Liu S, Li K, Kang M, Imtiaz H, Yao F, Fu G. Multifaceted polymeric materials in three-dimensional processing (3DP) technologies: Current progress and prospects. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4281] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Olayinka Oderinde
- School of Chemistry and Chemical Engineering Southeast University; Jiangning District Nanjing 211189 China
| | - Shunli Liu
- School of Chemistry and Chemical Engineering Southeast University; Jiangning District Nanjing 211189 China
| | - Kewen Li
- School of Chemistry and Chemical Engineering Southeast University; Jiangning District Nanjing 211189 China
| | - Mengmeng Kang
- School of Chemistry and Chemical Engineering Southeast University; Jiangning District Nanjing 211189 China
| | - Hussain Imtiaz
- School of Chemistry and Chemical Engineering Southeast University; Jiangning District Nanjing 211189 China
| | - Fang Yao
- School of Chemistry and Chemical Engineering Southeast University; Jiangning District Nanjing 211189 China
| | - Guodong Fu
- School of Chemistry and Chemical Engineering Southeast University; Jiangning District Nanjing 211189 China
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109
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Diniz IMA, Carreira ACO, Sipert CR, Uehara CM, Moreira MSN, Freire L, Pelissari C, Kossugue PM, de Araújo DR, Sogayar MC, Marques MM. Photobiomodulation of mesenchymal stem cells encapsulated in an injectable rhBMP4-loaded hydrogel directs hard tissue bioengineering. J Cell Physiol 2018; 233:4907-4918. [DOI: 10.1002/jcp.26309] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 12/01/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Ivana M. A. Diniz
- Department of Restorative Dentistry; School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte Brazil
| | - Ana C. O. Carreira
- Cell and Molecular Therapy Center (NUCEL/NETCEM); School of Medicine; University of São Paulo; São Paulo Brazil
- Department of Biochemistry; Chemistry Institute; University of São Paulo; São Paulo Brazil
| | - Carla R. Sipert
- Department of Restorative Dentistry; School of Dentistry; Universidade de São Paulo; São Paulo Brazil
| | - Cindi M. Uehara
- Department of Restorative Dentistry; School of Dentistry; Universidade de São Paulo; São Paulo Brazil
| | - Maria S. N. Moreira
- Department of Biodentistry; School of Dentistry; Ibirapuera University; São Paulo Brazil
| | - Laila Freire
- Department of Restorative Dentistry; School of Dentistry; Universidade de São Paulo; São Paulo Brazil
| | - Cibele Pelissari
- Department of Stomatology; School of Dentistry; Universidade de São Paulo; São Paulo Brazil
| | - Patrícia M. Kossugue
- Cell and Molecular Therapy Center (NUCEL/NETCEM); School of Medicine; University of São Paulo; São Paulo Brazil
- Department of Biochemistry; Chemistry Institute; University of São Paulo; São Paulo Brazil
| | | | - Mari C. Sogayar
- Cell and Molecular Therapy Center (NUCEL/NETCEM); School of Medicine; University of São Paulo; São Paulo Brazil
- Department of Biochemistry; Chemistry Institute; University of São Paulo; São Paulo Brazil
| | - Márcia M. Marques
- Department of Restorative Dentistry; School of Dentistry; Universidade de São Paulo; São Paulo Brazil
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110
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Chen L, Liu L, Wu C, Yang R, Chang J, Wei X. The extracts of bredigite bioceramics enhanced the pluripotency of human dental pulp cells. J Biomed Mater Res A 2017; 105:3465-3474. [DOI: 10.1002/jbm.a.36191] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 07/07/2017] [Accepted: 08/07/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Lihong Chen
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology; Affiliated Stomatological Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, 56 Lingyuan Xi Road; Guangzhou 510055 China
| | - Lu Liu
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology; Affiliated Stomatological Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, 56 Lingyuan Xi Road; Guangzhou 510055 China
| | - Chengtie Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics, Chinese Academy of Sciences; Shanghai 200050 China
| | - Ruiqi Yang
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology; Affiliated Stomatological Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, 56 Lingyuan Xi Road; Guangzhou 510055 China
| | - Jiang Chang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics, Chinese Academy of Sciences; Shanghai 200050 China
| | - Xi Wei
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology; Affiliated Stomatological Hospital, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, 56 Lingyuan Xi Road; Guangzhou 510055 China
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111
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Effects of Liposomes Contained in Thermosensitive Hydrogels as Biomaterials Useful in Neural Tissue Engineering. MATERIALS 2017; 10:ma10101122. [PMID: 28937646 PMCID: PMC5666928 DOI: 10.3390/ma10101122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 09/16/2017] [Accepted: 09/20/2017] [Indexed: 12/20/2022]
Abstract
Advances in the generation of suitable thermosensitive hydrogels for the delivery of cells in neural tissue engineering demonstrate a delicate relationship between physical properties and capabilities to promote cell proliferation and differentiation. To improve the properties of these materials, it is possible to add liposomes for the controlled release of bioactive elements, which in turn can affect the physical and biological properties of the hydrogels. In the present investigation, different hydrogels based on Pluronic F127 have been formulated with the incorporation of chitosan and two types of liposomes of two different sizes. The rheological and thermal properties and their relation with the neurite proliferation and growth of the PC12 cell line were evaluated. Our results show that the incorporation of liposomes modifies the properties of the hydrogels dependent on the concentration of chitosan and the lipid type in the liposomes, which directly affect the capabilities of the hydrogels to promote the viability and differentiation of PC12 cells.
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112
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Kaisang L, Siyu W, Lijun F, Daoyan P, Xian CJ, Jie S. Adipose-derived stem cells seeded in Pluronic F-127 hydrogel promotes diabetic wound healing. J Surg Res 2017; 217:63-74. [DOI: 10.1016/j.jss.2017.04.032] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 04/20/2017] [Accepted: 04/27/2017] [Indexed: 12/21/2022]
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113
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Xing J, Luo X, Bermudez J, Moldthan M, Li B. 3D BIOPRINTING OF SCAFFOLD STRUCTURE USING MICRO-EXTRUSION TECHNOLOGY. SOLID FREEFORM FABRICATION SYMPOSIUM PROCEEDINGS. SOLID FREEFORM FABRICATION SYMPOSIUM 2017; 2017:2311-2318. [PMID: 35845825 PMCID: PMC9286488 DOI: 10.26153/16943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Scaffold-based techniques are a vital assistance tool to support main structure and enhance the resolution of target structure. In this study, a custom-made micro-extrusion bioprinting system was built and utilized to fabricate different scaffold structures such as log-pile scaffold and two-ring scaffold. This approach showed tremendous potential because of its ability to produce microscale channels with almost any shape. We were able to fabricate these scaffolds by using a custom-made 3D bioprinter to print hydrogel solution, mostly composed of Pluronic F-127, then wash away hydrogen by phosphate buffer saline (PBS) after crosslinking of main structure. We were able to achieve the desired scaffold structure by feeding G-codes data into user interface (Pronterface) and then translating that model into a program that utilizes a customized programming language, which instructs the microfabrication printer nozzles to dispense the hydrogel at specific locations. This fundamental study will be used to print increasingly viable and complex tissue shapes with living cells.
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Affiliation(s)
- Juan Xing
- Department of Manufacturing Systems Engineering and Management, California State University, Northridge, CA 91330-8332
| | - Xianli Luo
- Department of Manufacturing Systems Engineering and Management, California State University, Northridge, CA 91330-8332
| | - Juliana Bermudez
- Department of Manufacturing Systems Engineering and Management, California State University, Northridge, CA 91330-8332
| | - Matthew Moldthan
- Department of Manufacturing Systems Engineering and Management, California State University, Northridge, CA 91330-8332
| | - Bingbing Li
- Department of Manufacturing Systems Engineering and Management, California State University, Northridge, CA 91330-8332
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114
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Penders J, Rajasekharan AK, Hulander M, Andersson M. In Situ Gold Nanoparticle Gradient Formation in a 3D Meso- and Macroporous Polymer Matrix. Macromol Rapid Commun 2017; 38. [PMID: 28671754 DOI: 10.1002/marc.201700231] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 05/22/2017] [Indexed: 11/10/2022]
Abstract
Herein, the development and characterization of a 3D gradient structure of gold nanoparticles is described. The gradient of gold nanoparticles is made in situ in a macroporous nonionic block copolymer hydrogel matrix, through gold ion diffusion control. The polymer provides a matrix for diffusion of gold ions, acts as a template for controlling nanoparticle growth, and facilitates the in situ reduction of gold ions to gold nanoparticles. A clear gradient in gold nanoparticles is observed across the 3D space of the polymer matrix using scanning electron microscopy, fluorescence microscopy, atomic force microscopy, and thermogravimetric analysis. The particle gradient is further functionalized with both hydrophobic and hydrophilic groups via thiol-gold linkage to demonstrate the ability to form gradients with different chemical functionalities. Using additive manufacturing, the polymer can also be printed as a porous network with possible applications for 3D cell culturing in, e.g., biomaterials research.
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Affiliation(s)
- Jelle Penders
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, SE-41296, Sweden.,Department of Materials, Imperial College, London, SW7 2AZ, UK
| | - Anand K Rajasekharan
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, SE-41296, Sweden
| | - Mats Hulander
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, SE-41296, Sweden
| | - Martin Andersson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, SE-41296, Sweden
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Elghazawy NH, Hefnawy A, Sedky NK, El-Sherbiny IM, Arafa RK. Preparation and nanoformulation of new quinolone scaffold-based anticancer agents: Enhancing solubility for better cellular delivery. Eur J Pharm Sci 2017; 105:203-211. [DOI: 10.1016/j.ejps.2017.05.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 05/15/2017] [Accepted: 05/15/2017] [Indexed: 10/19/2022]
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116
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Kozicki M, Kwiatos K, Kadlubowski S, Dudek M. TTC-Pluronic 3D radiochromic gel dosimetry of ionizing radiation. ACTA ACUST UNITED AC 2017; 62:5668-5690. [DOI: 10.1088/1361-6560/aa77eb] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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117
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Banga RJ, Meckes B, Narayan SP, Sprangers AJ, Nguyen ST, Mirkin CA. Cross-Linked Micellar Spherical Nucleic Acids from Thermoresponsive Templates. J Am Chem Soc 2017; 139:4278-4281. [PMID: 28207251 PMCID: PMC5493153 DOI: 10.1021/jacs.6b13359] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A one-pot synthesis of micellar spherical nucleic acid (SNA) nanostructures using Pluronic F127 as a thermoresponsive template is reported. These novel constructs are synthesized in a chemically straightforward process that involves intercalation of the lipid tails of DNA amphiphiles (CpG motifs for TLR-9 stimulation) into the hydrophobic regions of Pluronic F127 micelles, followed by chemical cross-linking and subsequent removal of non-cross-linked structures. The dense nucleic acid shell of the resulting cross-linked micellar SNA enhances their stability in physiological media and facilitates their rapid cellular internalization, making them effective TLR-9 immunomodulatory agents. These constructs underscore the potential of SNAs in regulating immune response and address the relative lack of stability of noncovalent constructs.
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Affiliation(s)
- Resham J Banga
- International Institute of Nanotechnology, ‡Department of Chemical and Biological Engineering, §Department of Chemistry, and ∥Department of Biomedical Engineering, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Brian Meckes
- International Institute of Nanotechnology, ‡Department of Chemical and Biological Engineering, §Department of Chemistry, and ∥Department of Biomedical Engineering, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Suguna P Narayan
- International Institute of Nanotechnology, ‡Department of Chemical and Biological Engineering, §Department of Chemistry, and ∥Department of Biomedical Engineering, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Anthony J Sprangers
- International Institute of Nanotechnology, ‡Department of Chemical and Biological Engineering, §Department of Chemistry, and ∥Department of Biomedical Engineering, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - SonBinh T Nguyen
- International Institute of Nanotechnology, ‡Department of Chemical and Biological Engineering, §Department of Chemistry, and ∥Department of Biomedical Engineering, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Chad A Mirkin
- International Institute of Nanotechnology, ‡Department of Chemical and Biological Engineering, §Department of Chemistry, and ∥Department of Biomedical Engineering, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States
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Self-hardening and thermoresponsive alpha tricalcium phosphate/pluronic pastes. Acta Biomater 2017; 49:563-574. [PMID: 27872015 DOI: 10.1016/j.actbio.2016.11.043] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 11/14/2016] [Accepted: 11/17/2016] [Indexed: 11/21/2022]
Abstract
Although calcium phosphate cements (CPCs) are used for bone regeneration in a wide range of clinical applications, various physicochemical phenomena are known to hinder their potential use in minimally invasive surgery or in highly vascularized surgical sites, mainly because of their lack of injectability or their low washout resistance. The present work shows that the combination of CPCs with an inverse-thermoresponsive hydrogel is a good strategy for finely tuning the cohesive and rheological properties of CPCs to achieve clinical acceptable injectability to prevent phase separation during implantation and cohesion to avoid washout of the paste. The thermoresponsive CPC developed combines alpha-tricalcium phosphate with an aqueous solution of pluronic F127, which exhibits an inverse thermoresponsive behaviour, with a gelling transformation at around body temperature. These novel CPCs exhibited temperature-dependent properties. Addition of the polymer enhanced the injectability of the paste, even at a low liquid-to-powder ratio, and allowed the rheological properties of the cement to be tuned, with the injection force decreasing with the temperature of the paste. Moreover, the cohesion of the paste was also temperature-dependent and increased as the temperature of the host medium increased due to gelling induced in the paste. The thermoresponsive cement exhibited excellent cohesion and clinically acceptable setting times at 37°C, irrespective of the initial temperature of the paste. The addition of pluronic F127 slightly delayed the setting reaction in the early stages but did not hinder the full transformation to calcium-deficient hydroxyapatite. Moreover, the frozen storage of premixed thermoresponsive cement pastes was explored, the main physicochemical properties of the cements being maintained upon thawing, even after 18months of frozen storage. This avoids the need to mix the cement in the operating theatre and allows its use off-the-shelf. The reverse thermoresponsive cements studied herein open up new perspectives in the surgical field, where the sequential gelling/hardening of these novel cements could allow for a better and safer clinical application. STATEMENT OF SIGNIFICANCE Calcium phosphate cements are attractive bone substitutes due to their similarity to the bone mineral phase. Although they can be injectable, cohesion and stability of the paste are crucial in terms of performance and safety. A common strategy is the combination with hydrogels. However, this often results in a decrease of viscosity with increasing temperature, which can lead to extravasation and particle leakage from the bone defect. The preferred evolution would be the opposite: a low viscosity would enhance mixing and injection, and an instantaneous increase of viscosity after injection would ensure washout resistance to the blood flow. Here we develop for the first time a calcium phosphate cement exhibiting reverse thermoresponsive properties using a poloxamer featuring inverse thermal gelling.
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Kolan K, Liu Y, Baldridge J, Murphy C, Semon J, Day D, Leu M. Solvent Based 3D Printing of Biopolymer/Bioactive Glass Composite and Hydrogel for Tissue Engineering Applications. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.procir.2017.04.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Maisani M, Pezzoli D, Chassande O, Mantovani D. Cellularizing hydrogel-based scaffolds to repair bone tissue: How to create a physiologically relevant micro-environment? J Tissue Eng 2017; 8:2041731417712073. [PMID: 28634532 PMCID: PMC5467968 DOI: 10.1177/2041731417712073] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 04/26/2017] [Indexed: 12/16/2022] Open
Abstract
Tissue engineering is a promising alternative to autografts or allografts for the regeneration of large bone defects. Cell-free biomaterials with different degrees of sophistication can be used for several therapeutic indications, to stimulate bone repair by the host tissue. However, when osteoprogenitors are not available in the damaged tissue, exogenous cells with an osteoblast differentiation potential must be provided. These cells should have the capacity to colonize the defect and to participate in the building of new bone tissue. To achieve this goal, cells must survive, remain in the defect site, eventually proliferate, and differentiate into mature osteoblasts. A critical issue for these engrafted cells is to be fed by oxygen and nutrients: the transient absence of a vascular network upon implantation is a major challenge for cells to survive in the site of implantation, and different strategies can be followed to promote cell survival under poor oxygen and nutrient supply and to promote rapid vascularization of the defect area. These strategies involve the use of scaffolds designed to create the appropriate micro-environment for cells to survive, proliferate, and differentiate in vitro and in vivo. Hydrogels are an eclectic class of materials that can be easily cellularized and provide effective, minimally invasive approaches to fill bone defects and favor bone tissue regeneration. Furthermore, by playing on their composition and processing, it is possible to obtain biocompatible systems with adequate chemical, biological, and mechanical properties. However, only a good combination of scaffold and cells, possibly with the aid of incorporated growth factors, can lead to successful results in bone regeneration. This review presents the strategies used to design cellularized hydrogel-based systems for bone regeneration, identifying the key parameters of the many different micro-environments created within hydrogels.
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Affiliation(s)
- Mathieu Maisani
- Laboratory for Biomaterials & Bioengineering (CRC-I), Department Min-Met-Materials Engineering & Research Center CHU de Québec, Laval University, Québec City, QC, Canada
- Laboratoire BioTis, Inserm U1026, Université de Bordeaux, Bordeaux, France
| | - Daniele Pezzoli
- Laboratory for Biomaterials & Bioengineering (CRC-I), Department Min-Met-Materials Engineering & Research Center CHU de Québec, Laval University, Québec City, QC, Canada
| | - Olivier Chassande
- Laboratoire BioTis, Inserm U1026, Université de Bordeaux, Bordeaux, France
| | - Diego Mantovani
- Laboratory for Biomaterials & Bioengineering (CRC-I), Department Min-Met-Materials Engineering & Research Center CHU de Québec, Laval University, Québec City, QC, Canada
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Tollemar V, Collier ZJ, Mohammed MK, Lee MJ, Ameer GA, Reid RR. Stem cells, growth factors and scaffolds in craniofacial regenerative medicine. Genes Dis 2016; 3:56-71. [PMID: 27239485 PMCID: PMC4880030 DOI: 10.1016/j.gendis.2015.09.004] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 09/22/2015] [Indexed: 02/08/2023] Open
Abstract
Current reconstructive approaches to large craniofacial skeletal defects are often complicated and challenging. Critical-sized defects are unable to heal via natural regenerative processes and require surgical intervention, traditionally involving autologous bone (mainly in the form of nonvascularized grafts) or alloplasts. Autologous bone grafts remain the gold standard of care in spite of the associated risk of donor site morbidity. Tissue engineering approaches represent a promising alternative that would serve to facilitate bone regeneration even in large craniofacial skeletal defects. This strategy has been tested in a myriad of iterations by utilizing a variety of osteoconductive scaffold materials, osteoblastic stem cells, as well as osteoinductive growth factors and small molecules. One of the major challenges facing tissue engineers is creating a scaffold fulfilling the properties necessary for controlled bone regeneration. These properties include osteoconduction, osetoinduction, biocompatibility, biodegradability, vascularization, and progenitor cell retention. This review will provide an overview of how optimization of the aforementioned scaffold parameters facilitates bone regenerative capabilities as well as a discussion of common osteoconductive scaffold materials.
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Affiliation(s)
- Viktor Tollemar
- The University of Chicago Pritzker School of Medicine, Chicago, IL 60637, USA
- Department of Orthopedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
- Laboratory of Craniofacial Biology and Development, Section of Plastic and Reconstructive Surgery, Department of Surgery, The University of Chicago Medicine, Chicago, IL 60637, USA
| | - Zach J. Collier
- The University of Chicago Pritzker School of Medicine, Chicago, IL 60637, USA
- Department of Orthopedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Maryam K. Mohammed
- The University of Chicago Pritzker School of Medicine, Chicago, IL 60637, USA
- Department of Orthopedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Michael J. Lee
- Department of Orthopedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Guillermo A. Ameer
- Department of Surgery, Feinberg School of Medicine, Chicago, IL 60611, USA
- Biomedical Engineering Department, Northwestern University, Evanston, IL 60208, USA
| | - Russell R. Reid
- Laboratory of Craniofacial Biology and Development, Section of Plastic and Reconstructive Surgery, Department of Surgery, The University of Chicago Medicine, Chicago, IL 60637, USA
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