1
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Kunkel AA, McHugh KJ. Injectable controlled-release systems for the prevention and treatment of infectious diseases. J Biomed Mater Res A 2024; 112:1224-1240. [PMID: 37740704 DOI: 10.1002/jbm.a.37615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 09/03/2023] [Accepted: 09/07/2023] [Indexed: 09/25/2023]
Abstract
Pharmaceutical drugs, including vaccines, pre- and post-exposure prophylactics, and chronic drug therapies, are crucial tools in the prevention and treatment of infectious diseases. These drugs have the ability to increase survival and improve patient quality of life; however, infectious diseases still accounted for more than 10.2 million deaths in 2019 before the COVID-19 pandemic. High mortality can be, in part, attributed to challenges in the availability of adequate drugs and vaccines, limited accessibility, poor drug bioavailability, the high cost of some treatments, and low patient adherence. A majority of these factors are logistical rather than technical challenges, providing an opportunity for existing drugs and vaccines to be improved through formulation. Injectable controlled-release drug delivery systems are one class of formulations that have the potential to overcome many of these limitations by releasing their contents in a sustained manner to reduce the need for frequent re-administration and improve clinical outcomes. This review provides an overview of injectable controlled drug delivery platforms, including microparticles, nanoparticles, and injectable gels, detailing recent developments using these systems for single-injection vaccination, long-acting prophylaxis, and sustained-release treatments for infectious disease.
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Affiliation(s)
- Alyssa A Kunkel
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Kevin J McHugh
- Department of Bioengineering, Rice University, Houston, Texas, USA
- Department of Chemistry, Rice University, Houston, Texas, USA
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2
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Tran TS, Balu R, Mettu S, Roy Choudhury N, Dutta NK. 4D Printing of Hydrogels: Innovation in Material Design and Emerging Smart Systems for Drug Delivery. Pharmaceuticals (Basel) 2022; 15:1282. [PMID: 36297394 PMCID: PMC9609121 DOI: 10.3390/ph15101282] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/12/2022] [Accepted: 10/13/2022] [Indexed: 11/23/2022] Open
Abstract
Advancements in the material design of smart hydrogels have transformed the way therapeutic agents are encapsulated and released in biological environments. On the other hand, the expeditious development of 3D printing technologies has revolutionized the fabrication of hydrogel systems for biomedical applications. By combining these two aspects, 4D printing (i.e., 3D printing of smart hydrogels) has emerged as a new promising platform for the development of novel controlled drug delivery systems that can adapt and mimic natural physio-mechanical changes over time. This allows printed objects to transform from static to dynamic in response to various physiological and chemical interactions, meeting the needs of the healthcare industry. In this review, we provide an overview of innovation in material design for smart hydrogel systems, current technical approaches toward 4D printing, and emerging 4D printed novel structures for drug delivery applications. Finally, we discuss the existing challenges in 4D printing hydrogels for drug delivery and their prospects.
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Affiliation(s)
| | | | | | | | - Naba Kumar Dutta
- School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
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3
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Rocker AJ, Cavasin M, Johnson NR, Shandas R, Park D. Sulfonated Thermoresponsive Injectable Gel for Sequential Release of Therapeutic Proteins to Protect Cardiac Function after Myocardial Infarction. ACS Biomater Sci Eng 2022; 8:3883-3898. [PMID: 35950643 DOI: 10.1021/acsbiomaterials.2c00616] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Myocardial infarction causes cardiomyocyte death and persistent inflammatory responses, which generate adverse pathological remodeling. Delivering therapeutic proteins from injectable materials in a controlled-release manner may present an effective biomedical approach for treating this disease. A thermoresponsive injectable gel composed of chitosan, conjugated with poly(N-isopropylacrylamide) and sulfonate groups, was developed for spatiotemporal protein delivery to protect cardiac function after myocardial infarction. The thermoresponsive gel delivered vascular endothelial growth factor (VEGF), interleukin-10 (IL-10), and platelet-derived growth factor (PDGF) in a sequential and sustained manner in vitro. An acute myocardial infarction mouse model was used to evaluate polymer biocompatibility and to determine therapeutic effects from the delivery system on cardiac function. Immunohistochemistry showed biocompatibility of the hydrogel, while the controlled delivery of the proteins reduced macrophage infiltration and increased vascularization. Echocardiography showed an improvement in ejection fraction and fractional shortening after injecting the thermal gel and proteins. A factorial design of experimental study was implemented to optimize the delivery system for the best combination and doses of proteins for further increasing stable vascularization and reducing inflammation using a subcutaneous injection mouse model. The results showed that VEGF, IL-10, and FGF-2 demonstrated significant contributions toward promoting long-term vascularization, while PDGF's effect was minimal.
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Affiliation(s)
- Adam J Rocker
- Department of Bioengineering, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Maria Cavasin
- Department of Medicine, Division of Cardiology, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Noah R Johnson
- Department of Neurology, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Robin Shandas
- Department of Bioengineering, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Daewon Park
- Department of Bioengineering, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado 80045, United States
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4
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Hogan KJ, Mikos AG. Biodegradable thermoresponsive polymers: Applications in drug delivery and tissue engineering. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.123063] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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5
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Sponchioni M, Capasso Palmiero U, Moscatelli D. Thermo-responsive polymers: Applications of smart materials in drug delivery and tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 102:589-605. [PMID: 31147031 DOI: 10.1016/j.msec.2019.04.069] [Citation(s) in RCA: 164] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 04/02/2019] [Accepted: 04/22/2019] [Indexed: 01/01/2023]
Abstract
Synthetic polymers are attracting great attention in the last decades for their use in the biomedical field as nanovectors for controlled drug delivery, hydrogels and scaffolds enabling cell growth. Among them, polymers able to respond to environmental stimuli have been recently under growing consideration to impart a "smart" behavior to the final product, which is highly desirable to provide it with a specific dynamic and an advanced function. In particular, thermo-responsive polymers, materials able to undergo a discontinuous phase transition or morphological change in response to a temperature variation, are among the most studied. The development of the so-called controlled radical polymerization techniques has paved the way to a high degree of engineering for the polymer architecture and properties, which in turn brought to a plethora of sophisticated behaviors for these polymers by simply switching the external temperature. These can be exploited in many different fields, from separation to advanced optics and biosensors. The aim of this review is to critically discuss the latest advances in the development of thermo-responsive materials for biomedical applications, including a highly controlled drug delivery, mediation of cell growth and bioseparation. The focus is on the structural and design aspects that are required to exploit such materials for cutting-edge applications in the biomedical field.
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Affiliation(s)
- Mattia Sponchioni
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy; Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland.
| | - Umberto Capasso Palmiero
- Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - Davide Moscatelli
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
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6
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Ong W, Pinese C, Chew SY. Scaffold-mediated sequential drug/gene delivery to promote nerve regeneration and remyelination following traumatic nerve injuries. Adv Drug Deliv Rev 2019; 149-150:19-48. [PMID: 30910595 DOI: 10.1016/j.addr.2019.03.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 02/27/2019] [Accepted: 03/19/2019] [Indexed: 02/06/2023]
Abstract
Neural tissue regeneration following traumatic injuries is often subpar. As a result, the field of neural tissue engineering has evolved to find therapeutic interventions and has seen promising outcomes. However, robust nerve and myelin regeneration remain elusive. One possible reason may be the fact that tissue regeneration often follows a complex sequence of events in a temporally-controlled manner. Although several other fields of tissue engineering have begun to recognise the importance of delivering two or more biomolecules sequentially for more complete tissue regeneration, such serial delivery of biomolecules in neural tissue engineering remains limited. This review aims to highlight the need for sequential delivery to enhance nerve regeneration and remyelination after traumatic injuries in the central nervous system, using spinal cord injuries as an example. In addition, possible methods to attain temporally-controlled drug/gene delivery are also discussed for effective neural tissue regeneration.
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7
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Elkhoury K, Russell C, Sanchez-Gonzalez L, Mostafavi A, Williams T, Kahn C, Peppas NA, Arab-Tehrany E, Tamayol A. Soft-Nanoparticle Functionalization of Natural Hydrogels for Tissue Engineering Applications. Adv Healthc Mater 2019; 8:e1900506. [PMID: 31402589 PMCID: PMC6752977 DOI: 10.1002/adhm.201900506] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 06/06/2019] [Indexed: 12/29/2022]
Abstract
Tissue engineering has emerged as an important research area that provides numerous research tools for the fabrication of biologically functional constructs that can be used in drug discovery, disease modeling, and the treatment of diseased or injured organs. From a materials point of view, scaffolds have become an important part of tissue engineering activities and are usually used to form an environment supporting cellular growth, differentiation, and maturation. Among various materials used as scaffolds, hydrogels based on natural polymers are considered one of the most suitable groups of materials for creating tissue engineering scaffolds. Natural hydrogels, however, do not always provide the physicochemical and biological characteristics and properties required for optimal cell growth. This review discusses the properties and tissue engineering applications of widely used natural hydrogels. In addition, methods of modulation of their physicochemical and biological properties using soft nanoparticles as fillers or reinforcing agents are presented.
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Affiliation(s)
| | - Carina Russell
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68508, USA
| | | | | | - Tyrell Williams
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68508, USA
| | - Cyril Kahn
- LIBio, Université de Lorraine, F-54000 Nancy, France
| | - Nicholas A. Peppas
- Departments of Biomedical and Chemical Engineering, Departments of Pediatrics and Surgery, Dell Medical School, University of Texas at Austin, Austin, TX, 78712, USA
| | | | - Ali Tamayol
- Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68508, USA
- Mary and Dick Holland Regenerative Medicine Program University of Nebraska-Medical Center, Omaha, NE, 68198
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8
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Umapathi R, Kumar K, Rani GM, Venkatesu P. Influence of biological stimuli on the phase behaviour of a biomedical thermoresponsive polymer: A comparative investigation of hemeproteins. J Colloid Interface Sci 2019; 541:1-11. [DOI: 10.1016/j.jcis.2019.01.062] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/09/2019] [Accepted: 01/15/2019] [Indexed: 12/31/2022]
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9
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Calik F, Degirmenci A, Eceoglu M, Sanyal A, Sanyal R. Dendron–Polymer Conjugate Based Cross-Linked Micelles: A Robust and Versatile Nanosystem for Targeted Delivery. Bioconjug Chem 2019; 30:1087-1097. [DOI: 10.1021/acs.bioconjchem.9b00027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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10
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Perera MM, Fischesser DM, Molkentin JD, Ayres N. Stiffness of thermoresponsive gelatin-based dynamic hydrogels affects fibroblast activation. Polym Chem 2019. [DOI: 10.1039/c9py01424a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Matrix dynamics can influence fibroblast activation.
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Affiliation(s)
- M. Mario Perera
- Department of Chemistry
- The University of Cincinnati
- Cincinnati
- USA
| | - Demetria M. Fischesser
- Cincinnati Children's Hospital Medical Center
- Division of Molecular Cardiovascular Biology
- Cincinnati
- USA
| | - Jeffery D. Molkentin
- Cincinnati Children's Hospital Medical Center
- Division of Molecular Cardiovascular Biology
- Cincinnati
- USA
| | - Neil Ayres
- Department of Chemistry
- The University of Cincinnati
- Cincinnati
- USA
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11
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Lee DJ, Rocker AJ, Bardill JR, Shandas R, Park D. A sulfonated reversible thermal gel for the spatiotemporal control of VEGF delivery to promote therapeutic angiogenesis. J Biomed Mater Res A 2018; 106:3053-3064. [PMID: 30295997 DOI: 10.1002/jbm.a.36496] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 06/15/2018] [Accepted: 06/22/2018] [Indexed: 12/23/2022]
Abstract
Despite medical and surgical advancements for the treatment of cardiovascular disease, mortality and morbidity remain high. Therapeutic angiogenesis has been one approach to address the major clinical need for a more effective treatment to restoring blood flow in ischemic organs and tissues, but current progress in angiogenic drug delivery is inadequate at providing sufficient bioavailability without causing safety concerns. An injectable sulfonated reversible thermal gel composed of a polyurea conjugated with poly(N-isopropylacrylamide) and sulfonate groups has been developed for the delivery of angiogenic factors. The thermal gel allowed for the spatiotemporal control of vascular endothelial growth factor release with a decreased initial burst release and reduced release rate in vitro. A subcutaneous injection mouse model was used to evaluate efficacious vascularization and assess the inflammatory response due to a foreign body. Thermal gel injections showed substantial vascularization properties by inducing vessel formation, recruitment and differentiation of vascular endothelial cells, and vessel stabilization by perivascular cells, while infiltrating macrophages due to the thermal gel injections decreased over time. These results demonstrated effective localization and delivery of angiogenic factors for therapeutic angiogenesis. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 3053-3064, 2018.
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Affiliation(s)
- David J Lee
- Department of Bioengineering, University of Colorado Denver Anschutz Medical Campus, 12800 E. 19th Avenue, Aurora, Colorado, 80045
| | - Adam J Rocker
- Department of Bioengineering, University of Colorado Denver Anschutz Medical Campus, 12800 E. 19th Avenue, Aurora, Colorado, 80045
| | - James R Bardill
- Department of Bioengineering, University of Colorado Denver Anschutz Medical Campus, 12800 E. 19th Avenue, Aurora, Colorado, 80045
| | - Robin Shandas
- Department of Bioengineering, University of Colorado Denver Anschutz Medical Campus, 12800 E. 19th Avenue, Aurora, Colorado, 80045
| | - Daewon Park
- Department of Bioengineering, University of Colorado Denver Anschutz Medical Campus, 12800 E. 19th Avenue, Aurora, Colorado, 80045
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12
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Leijten J, Seo J, Yue K, Santiago GTD, Tamayol A, Ruiz-Esparza GU, Shin SR, Sharifi R, Noshadi I, Álvarez MM, Zhang YS, Khademhosseini A. Spatially and Temporally Controlled Hydrogels for Tissue Engineering. MATERIALS SCIENCE & ENGINEERING. R, REPORTS : A REVIEW JOURNAL 2017; 119:1-35. [PMID: 29200661 PMCID: PMC5708586 DOI: 10.1016/j.mser.2017.07.001] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Recent years have seen tremendous advances in the field of hydrogel-based biomaterials. One of the most prominent revolutions in this field has been the integration of elements or techniques that enable spatial and temporal control over hydrogels' properties and functions. Here, we critically review the emerging progress of spatiotemporal control over biomaterial properties towards the development of functional engineered tissue constructs. Specifically, we will highlight the main advances in the spatial control of biomaterials, such as surface modification, microfabrication, photo-patterning, and three-dimensional (3D) bioprinting, as well as advances in the temporal control of biomaterials, such as controlled release of molecules, photocleaving of proteins, and controlled hydrogel degradation. We believe that the development and integration of these techniques will drive the engineering of next-generation engineered tissues.
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Affiliation(s)
- Jeroen Leijten
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
- Department of Developmental BioEngineering, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands
| | - Jungmok Seo
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Kan Yue
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Grissel Trujillo-de Santiago
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
- Microsystems Technologies Laboratories, MIT, Cambridge, 02139, MA, USA
- Centro de Biotecnología-FEMSA, Tecnológico de Monterrey at Monterrey, CP 64849, Monterrey, Nuevo León, México
| | - Ali Tamayol
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Guillermo U. Ruiz-Esparza
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Su Ryon Shin
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Roholah Sharifi
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Iman Noshadi
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Mario Moisés Álvarez
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
- Microsystems Technologies Laboratories, MIT, Cambridge, 02139, MA, USA
- Centro de Biotecnología-FEMSA, Tecnológico de Monterrey at Monterrey, CP 64849, Monterrey, Nuevo León, México
| | - Yu Shrike Zhang
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Ali Khademhosseini
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
- Department of Bioindustrial Technologies, College of Animal Bioscience and Technology, Konkuk University, Hwayang-dong, Gwangjin-gu, Seoul 143-701, Republic of Korea
- Department of Physics, King Abdulaziz University, Jeddah 21569, Saudi Arabia
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13
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Umapathi R, Vepuri SB, Venkatesu P, Soliman ME. Comprehensive Computational and Experimental Analysis of Biomaterial toward the Behavior of Imidazolium-Based Ionic Liquids: An Interplay between Hydrophilic and Hydrophobic Interactions. J Phys Chem B 2017; 121:4909-4922. [DOI: 10.1021/acs.jpcb.7b02208] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
| | - Suresh B. Vepuri
- K
L College of Pharmacy, K L University, Guntur 522 502, India
- Discipline
of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal (UKZN), Westville Campus, Durban 4000, South Africa
| | | | - Mahmoud E. Soliman
- Discipline
of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal (UKZN), Westville Campus, Durban 4000, South Africa
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14
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Karacivi M, Sumer Bolu B, Sanyal R. Targeting to the Bone: Alendronate-Directed Combretastatin A-4 Bearing Antiangiogenic Polymer-Drug Conjugates. Mol Pharm 2017; 14:1373-1383. [PMID: 28358515 DOI: 10.1021/acs.molpharmaceut.6b01173] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Selective targeting of tumor site with chemotherapeutic agents appears to be one of the most effective methods to address many of the problems encountered with conventional chemotherapy. In this work, poly(oligoethylene glycol)methacrylate (POEGMA) based bone-targeting polymers bearing an antiangiogenic drug combretastatin A4 (CA4) were synthesized using free radical polymerization. Targeted and nontargeting copolymers were evaluated for their bone targeting efficiency, cytotoxicities against endothelial cells, namely, HUVECs and U2-OS and Saos-2 cancerous cell lines, as well as their antiangiogenic activity against endothelial cell tube formation by HUVECs. It is observed that the drug conjugated polymers conjugated with the bisphosphonate groups containing drug alendronate (ALN) have remarkably high affinity for bone mineral when compared to the polymer-drug conjugates devoid of the bisphosphonate groups. Both targeted and nontargeted polymer-drug conjugates show a sustained drug release in rat plasma with an overall release of 80-93% over 5 days. In vitro studies revealed high levels of cytotoxicity of the polymer-drug conjugates against HUVECs and U2-OS, and moderate cytotoxicity toward Saos-2. Importantly, the CA4 conjugated copolymers displayed excellent level of antiangiogenic activity as deduced from in vitro endothelial cell tube formation assay using HUVECs. Overall, a novel bone-targeting antiangiogenic polymer-drug conjugate that can be further elaborated to carry additional anticancer drugs is disclosed.
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Affiliation(s)
- Merve Karacivi
- Department of Chemistry and ‡Center for Life Science and Technologies, Bogazici University , Istanbul 34342, Turkey
| | - Burcu Sumer Bolu
- Department of Chemistry and ‡Center for Life Science and Technologies, Bogazici University , Istanbul 34342, Turkey
| | - Rana Sanyal
- Department of Chemistry and ‡Center for Life Science and Technologies, Bogazici University , Istanbul 34342, Turkey
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15
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The biological stimuli for governing the phase transition temperature of the “smart” polymer PNIPAM in water. Colloids Surf B Biointerfaces 2015; 135:588-595. [DOI: 10.1016/j.colsurfb.2015.08.020] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 08/10/2015] [Accepted: 08/17/2015] [Indexed: 01/13/2023]
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16
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Thermoresponsive hydrogels in biomedical applications. Eur J Pharm Biopharm 2015; 97:338-49. [DOI: 10.1016/j.ejpb.2015.05.017] [Citation(s) in RCA: 321] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 05/07/2015] [Accepted: 05/21/2015] [Indexed: 11/21/2022]
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17
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Rambhia KJ, Ma PX. Controlled drug release for tissue engineering. J Control Release 2015; 219:119-128. [PMID: 26325405 DOI: 10.1016/j.jconrel.2015.08.049] [Citation(s) in RCA: 148] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 08/23/2015] [Accepted: 08/25/2015] [Indexed: 11/19/2022]
Abstract
Tissue engineering is often referred to as a three-pronged discipline, with each prong corresponding to 1) a 3D material matrix (scaffold), 2) drugs that act on molecular signaling, and 3) regenerative living cells. Herein we focus on reviewing advances in controlled release of drugs from tissue engineering platforms. This review addresses advances in hydrogels and porous scaffolds that are synthesized from natural materials and synthetic polymers for the purposes of controlled release in tissue engineering. We pay special attention to efforts to reduce the burst release effect and to provide sustained and long-term release. Finally, novel approaches to controlled release are described, including devices that allow for pulsatile and sequential delivery. In addition to recent advances, limitations of current approaches and areas of further research are discussed.
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Affiliation(s)
- Kunal J Rambhia
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Peter X Ma
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI 48109, USA; Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI 48109, USA; Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA.
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18
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Das A, Theato P. Activated Ester Containing Polymers: Opportunities and Challenges for the Design of Functional Macromolecules. Chem Rev 2015; 116:1434-95. [DOI: 10.1021/acs.chemrev.5b00291] [Citation(s) in RCA: 285] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anindita Das
- Institute
for Technical and
Macromolecular Chemistry, University of Hamburg, D-20146 Hamburg, Germany
| | - Patrick Theato
- Institute
for Technical and
Macromolecular Chemistry, University of Hamburg, D-20146 Hamburg, Germany
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19
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Shekhar S, Mukherjee M, Sen AK. Swelling, thermal and mechanical properties of NIPAM-based terpolymeric hydrogel. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1476-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Reis LA, Chiu LLY, Wu J, Feric N, Laschinger C, Momen A, Li RK, Radisic M. Hydrogels with integrin-binding angiopoietin-1-derived peptide, QHREDGS, for treatment of acute myocardial infarction. Circ Heart Fail 2015; 8:333-41. [PMID: 25632037 DOI: 10.1161/circheartfailure.114.001881] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
BACKGROUND Hydrogels are being actively investigated for direct delivery of cells or bioactive molecules to the heart after myocardial infarction (MI) to prevent cardiac functional loss. We postulate that immobilization of the prosurvival angiopoietin-1-derived peptide, QHREDGS, to a chitosan-collagen hydrogel could produce a clinically translatable thermoresponsive hydrogel to attenuate post-MI cardiac remodeling. METHODS AND RESULTS In a rat MI model, QHREDGS-conjugated hydrogel (QHG213H), control gel, or PBS was injected into the peri-infarct/MI zone. By in vivo tracking and chitosan staining, the hydrogel was demonstrated to remain in situ for 2 weeks and was cleared in ≈3 weeks. By echocardiography and pressure-volume analysis, the QHG213H hydrogel significantly improved cardiac function compared with the controls. Scar thickness and scar area fraction were also significantly improved with QHG213H gel injection compared with the controls. There were significantly more cardiomyocytes, determined by cardiac troponin-T staining, in the MI zone of the QHG213H hydrogel group; and hydrogel injection did not induce a significant inflammatory response as assessed by polymerase chain reaction and an inflammatory cytokine assay. The interaction of cardiomyocytes and cardiac fibroblasts with QHREDGS was found to be mediated by β1-integrins. CONCLUSIONS We demonstrated for the first time that the QHG213H peptide-modified hydrogel can be injected in the beating heart where it remains localized for a clinically effective period. Moreover, the QHG213H hydrogel induced significant cardiac functional and morphological improvements after MI relative to the controls.
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Affiliation(s)
- Lewis A Reis
- From the Institute of Biomaterials and Biomedical Engineering (L.A.R., N.F., C.L., M.R.) and Department of Chemical Engineering and Applied Chemistry (L.L.Y.C., M.R.), University of Toronto, Canada; and Toronto General Research Institute, University Health Network, Canada (J.W., A.M., R.-K.L.)
| | - Loraine L Y Chiu
- From the Institute of Biomaterials and Biomedical Engineering (L.A.R., N.F., C.L., M.R.) and Department of Chemical Engineering and Applied Chemistry (L.L.Y.C., M.R.), University of Toronto, Canada; and Toronto General Research Institute, University Health Network, Canada (J.W., A.M., R.-K.L.)
| | - Jun Wu
- From the Institute of Biomaterials and Biomedical Engineering (L.A.R., N.F., C.L., M.R.) and Department of Chemical Engineering and Applied Chemistry (L.L.Y.C., M.R.), University of Toronto, Canada; and Toronto General Research Institute, University Health Network, Canada (J.W., A.M., R.-K.L.)
| | - Nicole Feric
- From the Institute of Biomaterials and Biomedical Engineering (L.A.R., N.F., C.L., M.R.) and Department of Chemical Engineering and Applied Chemistry (L.L.Y.C., M.R.), University of Toronto, Canada; and Toronto General Research Institute, University Health Network, Canada (J.W., A.M., R.-K.L.)
| | - Carol Laschinger
- From the Institute of Biomaterials and Biomedical Engineering (L.A.R., N.F., C.L., M.R.) and Department of Chemical Engineering and Applied Chemistry (L.L.Y.C., M.R.), University of Toronto, Canada; and Toronto General Research Institute, University Health Network, Canada (J.W., A.M., R.-K.L.)
| | - Abdul Momen
- From the Institute of Biomaterials and Biomedical Engineering (L.A.R., N.F., C.L., M.R.) and Department of Chemical Engineering and Applied Chemistry (L.L.Y.C., M.R.), University of Toronto, Canada; and Toronto General Research Institute, University Health Network, Canada (J.W., A.M., R.-K.L.)
| | - Ren-Ke Li
- From the Institute of Biomaterials and Biomedical Engineering (L.A.R., N.F., C.L., M.R.) and Department of Chemical Engineering and Applied Chemistry (L.L.Y.C., M.R.), University of Toronto, Canada; and Toronto General Research Institute, University Health Network, Canada (J.W., A.M., R.-K.L.)
| | - Milica Radisic
- From the Institute of Biomaterials and Biomedical Engineering (L.A.R., N.F., C.L., M.R.) and Department of Chemical Engineering and Applied Chemistry (L.L.Y.C., M.R.), University of Toronto, Canada; and Toronto General Research Institute, University Health Network, Canada (J.W., A.M., R.-K.L.).
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Peña B, Shandas R, Park D. A heparin-mimicking reverse thermal gel for controlled delivery of positively charged proteins. J Biomed Mater Res A 2014; 103:2102-8. [PMID: 25294242 DOI: 10.1002/jbm.a.35345] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 09/23/2014] [Accepted: 09/30/2014] [Indexed: 12/13/2022]
Abstract
Positively charged therapeutic proteins have been used extensively for biomedical applications. However, the safety and efficacy of proteins are mostly limited by their physical and chemical instability and short half-lives in physiological conditions. To this end, we created a heparin-mimicking sulfonated reverse thermal gel as a novel protein delivery system by sulfonation of a graft copolymer, poly(serinol hexamethylene urea)-co-poly(N-isopropylacylamide), or PSHU-NIPAAm. The net charge of the sulfonated PSHU-NIPAAm was negative due to the presence of sulfonate groups. The sulfonated PSHU-NIPAAm showed a typical temperature-dependent sol-gel phase transition, where polymer solutions turned to a physical gel at around 32°C and maintained gel status at body temperature. Both in vitro cytotoxicity tests using C2C12 myoblast cells and in vivo cytotoxicity tests by subcutaneous injections demonstrated excellent biocompatibility. In vitro release tests using bovine serum albumin revealed that the release from the sulfonated PSHU-NIPAAm was more sustained than that from the plain PSHU-NIPAAm. Furthermore, this sulfonated PSHU-NIPAAm system did not affect protein structure after 70-day observation periods.
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Affiliation(s)
- Brisa Peña
- Department of Bioengineering, University of Colorado Denver Anschutz Medical Campus, Aurora, Colorado, 80045
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22
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Harrison RH, St-Pierre JP, Stevens MM. Tissue engineering and regenerative medicine: a year in review. TISSUE ENGINEERING PART B-REVIEWS 2014; 20:1-16. [PMID: 24410501 DOI: 10.1089/ten.teb.2013.0668] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
It is an exciting time to be involved in tissue engineering and regenerative medicine (TERM) research. Despite its relative youth, the field is expanding fast and breaking new ground in both the laboratory and clinically. In this "Year in Review," we highlight some of the high-impact advances in the field. Building upon last year's article, we have identified the recent "hot topics" and the key publications pertaining to these themes as well as ideas that have high potential to direct the field. Based on a modified methodology grounded on last year's approach, we have identified and summarized some of the most impactful publications in five main themes: (1) pluripotent stem cells: efforts and hurdles to translation, (2) tissue engineering: complex scaffolds and advanced materials, (3) directing the cell phenotype: growth factor and biomolecule presentation, (4) characterization: imaging and beyond, and (5) translation: preclinical to clinical. We have complemented our review of the research directions highlighted within these trend-setting studies with a discussion of additional articles along the same themes that have recently been published and have yet to surface in citation analyses. We conclude with a discussion of some really interesting studies that provide a glimpse of the high potential for innovation of TERM research.
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Affiliation(s)
- Rachael H Harrison
- 1 Department of Materials, Imperial College London , London, United Kingdom
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23
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Hsu BB, Jamieson KS, Hagerman SR, Holler E, Ljubimova JY, Hammond PT. Ordered and kinetically discrete sequential protein release from biodegradable thin films. Angew Chem Int Ed Engl 2014; 53:8093-8. [PMID: 24938739 PMCID: PMC4387866 DOI: 10.1002/anie.201403702] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Indexed: 11/09/2022]
Abstract
Multidrug regimens can sometimes treat recalcitrant diseases when single-drug therapies fail. Recapitulating complex multidrug administration from controlled release films for localized delivery remains challenging because their release kinetics are frequently intertwined, and an initial burst release of each drug is usually uncontrollable. Kinetic control over protein release is demonstrated by cross-linking layer-by-layer films during the assembly process. We used biodegradable and naturally derived components and relied on copper-free click chemistry for bioorthogonal covalent cross-links throughout the film that entrap but do not modify the embedded protein. We found that this strategy restricted the interdiffusion of protein while maintaining its activity. By depositing a barrier layer and a second protein-containing layer atop this construct, we generated well-defined sequential protein release with minimal overlap that follows their spatial distribution within the film.
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Affiliation(s)
- Bryan B. Hsu
- Koch Institute for Integrative Cancer Research and the Institute for Soldier Nanotechnologies, Massachusetts Institute for Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 USA, Department of Chemistry, Massachusetts Institute for Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 USA
| | - Kelsey S. Jamieson
- Department of Chemical Engineering, Massachusetts Institute for Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 USA
| | - Samantha R. Hagerman
- Department of Chemical Engineering, Massachusetts Institute for Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 USA
| | - Eggehard Holler
- Nanomedicine Research Center; Department of Neurosurgery, Cedars Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles, CA 90048 USA
| | - Julia Y. Ljubimova
- Nanomedicine Research Center; Department of Neurosurgery, Cedars Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles, CA 90048 USA
| | - Paula T. Hammond
- Koch Institute for Integrative Cancer Research and the Institute for Soldier Nanotechnologies, Massachusetts Institute for Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 USA, Department of Chemical Engineering, Massachusetts Institute for Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 USA
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24
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Ordered and Kinetically Discrete Sequential Protein Release from Biodegradable Thin Films. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403702] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Purcell BP, Lobb D, Charati MB, Dorsey SM, Wade RJ, Zellers KN, Doviak H, Pettaway S, Logdon CB, Shuman J, Freels PD, Gorman JH, Gorman RC, Spinale FG, Burdick JA. Injectable and bioresponsive hydrogels for on-demand matrix metalloproteinase inhibition. NATURE MATERIALS 2014; 13:653-61. [PMID: 24681647 PMCID: PMC4031269 DOI: 10.1038/nmat3922] [Citation(s) in RCA: 346] [Impact Index Per Article: 34.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 02/20/2014] [Indexed: 05/06/2023]
Abstract
Inhibitors of matrix metalloproteinases (MMPs) have been extensively explored to treat pathologies where excessive MMP activity contributes to adverse tissue remodelling. Although MMP inhibition remains a relevant therapeutic target, MMP inhibitors have not translated to clinical application owing to the dose-limiting side effects following systemic administration of the drugs. Here, we describe the synthesis of a polysaccharide-based hydrogel that can be locally injected into tissues and releases a recombinant tissue inhibitor of MMPs (rTIMP-3) in response to MMP activity. Specifically, rTIMP-3 is sequestered in the hydrogels through electrostatic interactions and is released as crosslinks are degraded by active MMPs. Targeted delivery of the hydrogel/rTIMP-3 construct to regions of MMP overexpression following a myocardial infarction significantly reduced MMP activity and attenuated adverse left ventricular remodelling in a porcine model of myocardial infarction. Our findings demonstrate that local, on-demand MMP inhibition is achievable through the use of an injectable and bioresponsive hydrogel.
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Affiliation(s)
- Brendan P. Purcell
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA
| | - David Lobb
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, SC
| | - Manoj B. Charati
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA
| | - Shauna M. Dorsey
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA
| | - Ryan J. Wade
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA
| | - Kia N. Zellers
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, SC
| | - Heather Doviak
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, SC
| | - Sara Pettaway
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, SC
| | - Christina B. Logdon
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, SC
| | - James Shuman
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, SC
| | - Parker D. Freels
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, SC
| | - Joseph H. Gorman
- Gorman Cardiovascular Research Laboratory, Department of Surgery, University of Pennsylvania, Philadelphia, PA
| | - Robert C. Gorman
- Gorman Cardiovascular Research Laboratory, Department of Surgery, University of Pennsylvania, Philadelphia, PA
| | - Francis G. Spinale
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, SC
| | - Jason A. Burdick
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA
- Corresponding Author: University of Pennsylvania, Department of Bioengineering, 240 Skirkanich Hall, 210 S. 33 Street, Philadelphia, PA 19104; Tel: 215-898-8537; Fax: 215-573-2071;
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26
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Huang CL, Lee WL, Loo JS. Drug-eluting scaffolds for bone and cartilage regeneration. Drug Discov Today 2014; 19:714-24. [DOI: 10.1016/j.drudis.2013.11.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 10/16/2013] [Accepted: 11/06/2013] [Indexed: 12/19/2022]
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27
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Yu L, Xu W, Shen W, Cao L, Liu Y, Li Z, Ding J. Poly(lactic acid-co-glycolic acid)-poly(ethylene glycol)-poly(lactic acid-co-glycolic acid) thermogel as a novel submucosal cushion for endoscopic submucosal dissection. Acta Biomater 2014; 10:1251-8. [PMID: 24345554 DOI: 10.1016/j.actbio.2013.12.007] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Revised: 11/02/2013] [Accepted: 12/06/2013] [Indexed: 12/21/2022]
Abstract
Endoscopic submucosal dissection (ESD) is a clinical therapy for early stage neoplastic lesions in the gastrointestinal tract. It is, however, faced with a crucial problem: the high occurrence of perforation. The formation of a submucosal fluid cushion (SFC) via a fluid injection is the best way to avoid perforation, and thus an appropriate biomaterial is vital for this minimally invasive endoscopic technique. In this study, we introduced an injectable thermogel as a novel submucosal injection substance in ESD. The hydrogel synthesized by us was composed of poly(lactic acid-co-glycolic acid)-poly(ethylene glycol)-poly(lactic acid-co-glycolic acid) (PLGA-PEG-PLGA) triblock copolymers. The polymer/water system was a low-viscosity fluid at room temperature and thus easily injected, and turned into a non-flowing gel at body temperature after injection. The submucosal injection of the thermogel to create SFCs was performed in both resected porcine stomachs and living minipigs. High mucosal elevation with a clear margin was maintained for a long duration. Accurate en bloc resection was achieved with the assistance of the thermogel. The mean procedure time was strikingly reduced. Meanwhile, no obvious bleeding, perforation and tissue damage were observed. The application of the thermogel not only facilitated the ESD procedure, but also increased the efficacy and safety of ESD. Therefore, the PLGA-PEG-PLGA thermogel provides an excellent submucosal injection system, and has great potential to improve the ESD technique significantly.
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Cummings C, Murata H, Koepsel R, Russell AJ. Dramatically Increased pH and Temperature Stability of Chymotrypsin Using Dual Block Polymer-Based Protein Engineering. Biomacromolecules 2014; 15:763-71. [DOI: 10.1021/bm401575k] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Chad Cummings
- Department of Biomedical Engineering, Doherty
Hall 2100, and ‡Disruptive Health
Technology Institute, ICES, 1201 Hamburg Hall, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Hironobu Murata
- Department of Biomedical Engineering, Doherty
Hall 2100, and ‡Disruptive Health
Technology Institute, ICES, 1201 Hamburg Hall, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Richard Koepsel
- Department of Biomedical Engineering, Doherty
Hall 2100, and ‡Disruptive Health
Technology Institute, ICES, 1201 Hamburg Hall, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Alan J. Russell
- Department of Biomedical Engineering, Doherty
Hall 2100, and ‡Disruptive Health
Technology Institute, ICES, 1201 Hamburg Hall, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
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29
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Shekhar S, Mukherjee M, Sen AK. Synthesis and Characterization of Thermoresponsive Terpolymer for Protein Separation. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2013.853668] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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30
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Nelson DM, Hashizume R, Yoshizumi T, Blakney AK, Ma Z, Wagner WR. Intramyocardial injection of a synthetic hydrogel with delivery of bFGF and IGF1 in a rat model of ischemic cardiomyopathy. Biomacromolecules 2014; 15:1-11. [PMID: 24345287 DOI: 10.1021/bm4010639] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
It is increasingly appreciated that the properties of a biomaterial used in intramyocardial injection therapy influence the outcomes of infarcted hearts that are treated. In this report the extended in vivo efficacy of a thermally responsive material that can deliver dual growth factors while providing a slow degradation time and high mechanical stiffness is examined. Copolymers consisting of N-isopropylacrylamide, 2-hydroxyethyl methacrylate, and degradable methacrylate polylactide were synthesized. The release of bioactive basic fibroblast growth factor (bFGF) and insulin-like growth factor 1 (IGF1) from the gel and loaded poly(lactide-co-glycolide) microparticles was assessed. Hydrogel with or without loaded growth factors was injected into 2 week-old infarcts in Lewis rats and animals were followed for 16 weeks. The hydrogel released bioactive bFGF and IGF1 as shown by mitogenic effects on rat smooth muscle cells in vitro. Cardiac function and geometry were improved for 16 weeks after hydrogel injection compared to saline injection. Despite demonstrating that left ventricular levels of bFGF and IGF1 were elevated for two weeks after injection of growth factor loaded gels, both functional and histological assessment showed no added benefit to inclusion of these proteins. This result points to the complexity of designing appropriate materials for this application and suggests that the nature of the material alone, without exogenous growth factors, has a direct ability to influence cardiac remodeling.
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Affiliation(s)
- Devin M Nelson
- Department of Bioengineering and ‡McGowan Institute for Regenerative Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania 15219, United States
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31
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Browne S, Pandit A. Multi-modal delivery of therapeutics using biomaterial scaffolds. J Mater Chem B 2014; 2:6692-6707. [DOI: 10.1039/c4tb00863d] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Functionalisation of biomaterials with therapeutic moieties (proteins, drugs, genes) is a pre-requisite to tissue regeneration and restoration of function following injury or disease.
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Affiliation(s)
- S. Browne
- Network of Excellence for Functional Biomaterials
- National University of Ireland
- Galway, Ireland
| | - A. Pandit
- Network of Excellence for Functional Biomaterials
- National University of Ireland
- Galway, Ireland
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32
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Zheng D, An YY, Yang S, Wu W, Xu W, Liu G, Yang C, Dan Y, Xu Z, Wu S. Self-Assembled Glucose and Thermo Dual-Responsive Micelles of an Amphiphilic Graft Copolymer. INT J POLYM MATER PO 2013. [DOI: 10.1080/00914037.2013.769256] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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33
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Christ GJ, Saul JM, Furth ME, Andersson KE. The pharmacology of regenerative medicine. Pharmacol Rev 2013; 65:1091-133. [PMID: 23818131 DOI: 10.1124/pr.112.007393] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Regenerative medicine is a rapidly evolving multidisciplinary, translational research enterprise whose explicit purpose is to advance technologies for the repair and replacement of damaged cells, tissues, and organs. Scientific progress in the field has been steady and expectations for its robust clinical application continue to rise. The major thesis of this review is that the pharmacological sciences will contribute critically to the accelerated translational progress and clinical utility of regenerative medicine technologies. In 2007, we coined the phrase "regenerative pharmacology" to describe the enormous possibilities that could occur at the interface between pharmacology, regenerative medicine, and tissue engineering. The operational definition of regenerative pharmacology is "the application of pharmacological sciences to accelerate, optimize, and characterize (either in vitro or in vivo) the development, maturation, and function of bioengineered and regenerating tissues." As such, regenerative pharmacology seeks to cure disease through restoration of tissue/organ function. This strategy is distinct from standard pharmacotherapy, which is often limited to the amelioration of symptoms. Our goal here is to get pharmacologists more involved in this field of research by exposing them to the tools, opportunities, challenges, and interdisciplinary expertise that will be required to ensure awareness and galvanize involvement. To this end, we illustrate ways in which the pharmacological sciences can drive future innovations in regenerative medicine and tissue engineering and thus help to revolutionize the discovery of curative therapeutics. Hopefully, the broad foundational knowledge provided herein will spark sustained conversations among experts in diverse fields of scientific research to the benefit of all.
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Affiliation(s)
- George J Christ
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA.
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Payyappilly S, Dhara S, Chattopadhyay S. Thermoresponsive biodegradable PEG-PCL-PEG based injectable hydrogel for pulsatile insulin delivery. J Biomed Mater Res A 2013; 102:1500-9. [DOI: 10.1002/jbm.a.34800] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 05/07/2013] [Accepted: 05/09/2013] [Indexed: 01/09/2023]
Affiliation(s)
- Sanal Payyappilly
- Rubber Technology Centre; Indian Institute of Technology; Kharagpur 721302 India
| | - Santanu Dhara
- School of Medical Science and Technology, Indian Institute of Technology; Kharagpur 721302 India
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35
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Su J, Xu H, Sun J, Gong X, Zhao H. Dual delivery of BMP-2 and bFGF from a new nano-composite scaffold, loaded with vascular stents for large-size mandibular defect regeneration. Int J Mol Sci 2013; 14:12714-28. [PMID: 23778088 PMCID: PMC3709809 DOI: 10.3390/ijms140612714] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 05/14/2013] [Accepted: 06/13/2013] [Indexed: 12/26/2022] Open
Abstract
The aim of this study was to investigate the feasibility and advantages of the dual delivery of bone morphogenetic protein-2 (BMP-2) and basic fibroblast growth factor (bFGF) from nano-composite scaffolds (PLGA/PCL/nHA) loaded with vascular stents (PLCL/Col/nHA) for large bone defect regeneration in rabbit mandibles. Thirty-six large bone defects were repaired in rabbits using engineering bone composed of allogeneic bone marrow mesenchymal stem cells (BMSCs), bFGF, BMP-2 and scaffolds composed of PLGA/PCL/nHA loaded with PLCL/Col/nHA. The experiments were divided into six groups: BMSCs/bFGF/BMP-2/scaffold, BMSCs/BMP-2/scaffold, BMSCs/bFGF/scaffold, BMSCs/scaffold, scaffold alone and no treatment. Sodium alginate hydrogel was used as the carrier for BMP-2 and bFGF and its features, including gelling, degradation and controlled release properties, was detected by the determination of gelation and degradation time coupled with a controlled release study of bovine serum albumin (BSA). AlamarBlue assay and alkaline phosphatase (ALP) activity were used to evaluate the proliferation and osteogenic differentiation of BMSCs in different groups. X-ray and histological examinations of the samples were performed after 4 and 12 weeks post-implantation to clarify new bone formation in the mandible defects. The results verified that the use of sodium alginate hydrogel as a controlled release carrier has good sustained release ability, and the combined application of bFGF and BMP-2 could significantly promote the proliferation and osteogenic differentiation of BMSCs (p < 0.05 or p < 0.01). In addition, X-ray and histological examinations of the samples exhibited that the dual release group had significantly higher bone formation than the other groups. The above results indicate that the delivery of both growth factors could enhance new bone formation and vascularization compared with delivery of BMP-2 or bFGF alone, and may supply a promising way of repairing large bone defects in bone tissue engineering.
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Affiliation(s)
- Jiansheng Su
- Institute of Prosthodontics, School of Stomatology, Tongji University, 399 Yanchang Road, Shanghai 200092, China.
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Overstreet DJ, Huynh R, Jarbo K, McLemore RY, Vernon BL. In situ forming, resorbable graft copolymer hydrogels providing controlled drug release. J Biomed Mater Res A 2012; 101:1437-46. [PMID: 23114985 DOI: 10.1002/jbm.a.34443] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 07/30/2012] [Accepted: 08/28/2012] [Indexed: 11/09/2022]
Abstract
In situ forming hydrogels are promising drug delivery vehicles due to their ease of delivery as liquids and their ability to be used in sites with irregular geometries. In this work, we report on in situ forming, resorbable hydrogels based on N-isopropylacrylamide (NIPAAm) as a fluid-like controlled release gel. These gels are the first resorbable NIPAAm-based gels providing controlled release without relying on affinity between the drug and device. Therefore, these gels provide a more flexible delivery system which can be used to deliver any drug at a controlled rate. The polymers contain repeat units of NIPAAm with (R)-α-Acryloyloxy-β,β-dimethyl-γ-butyrolactone (DBLA) and varying amounts of hydrophilic Jeffamine® M-1000 acrylamide (JAAm) grafts. The graft copolymer architecture allows the water content of the hydrogels to be tuned over a wide range while keeping the initial gelation temperature below body temperature. Incorporation of JAAm in the polymers led to greater water content, faster gel degradation, and reduced burst release. Sustained release of the antimicrobial drugs cefazolin and vancomycin (over about 5 and 7 days, respectively) was observed from gels containing an intermediate amount of grafts which combined reduced phase separation with a degradation time of 40 days. The degradation byproducts of one hydrogel formulation were cytocompatible to NIH 3T3 fibroblasts at concentrations up to 2.5 wt %. This class of terpolymer hydrogels is a promising local delivery system for a wide variety of drugs, particularly for applications involving irregular geometries such as implant interfaces.
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Affiliation(s)
- Derek J Overstreet
- Center for Interventional Biomaterials, School of Biological and Health Systems Engineering, Arizona State University, Tempe, Arizona 85287-9709, USA
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Metal ions guided self-assembly of therapeutic proteins for controllable release: from random to ordered aggregation. Pharm Res 2012; 30:269-79. [PMID: 22975806 DOI: 10.1007/s11095-012-0871-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 08/20/2012] [Indexed: 10/27/2022]
Abstract
PURPOSE To make a comparative study on sustained delivery performance of rhIFN with random amorphous and spherical crystal-like ordered self-assemblies. METHODS The rhIFN self-assemblies were identified in batch crystallization mode. Physico-chemical characteristics were compared, including morphology, XRD, FTIR, CD, biological potency, the dissolution behaviors in vitro and plasma pharmacokinetics in vivo. Moreover, molecular simulation was performed to better understand their binding site and mode. RESULTS Here, we suggest that random amorphous and spherical ordered self-assemblies allow for long action without new molecular entities generation or carriers employed. By manipulating supersaturation, the ordered aggregates were self-organized at high concentration of Zn(II) (>100 mM) in pH 5.5-6.0, which was the first time that spherical semi-crystals of rhIFN can act as a depot source for the sustained delivery of biologically active proteins. The secondary structure and biological potency of rhIFN were unchanged after aggregation. Compared with that of the native rhIFN, both self-assemblies exhibited slower absorption and extended elimination profiles after s.c. administration, which were characterized as 4.75 ± 0.82 h and 10.58 ± 1.86 h of terminal half-life for random amorphous and spherical ordered self-assemblies, respectively. CONCLUSIONS The work described here demonstrates the possibility of self-assemblies of biomacromolecules for controllable release application of therapeutic proteins.
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Griffin DR, Kasko AM. Photodegradable macromers and hydrogels for live cell encapsulation and release. J Am Chem Soc 2012; 134:13103-7. [PMID: 22765384 PMCID: PMC4180708 DOI: 10.1021/ja305280w] [Citation(s) in RCA: 191] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hydrogel scaffolds are commonly used as 3D carriers for cells because their properties can be tailored to match natural extracellular matrix. Hydrogels may be used in tissue engineering and regenerative medicine to deliver therapeutic cells to injured or diseased tissue through controlled degradation. Hydrolysis and enzymolysis are the two most common mechanisms employed for hydrogel degradation, but neither allows sequential or staged release of cells. In contrast, photodegradation allows external real-time spatial and temporal control over hydrogel degradation, and allows for staged and sequential release of cells. We synthesized and characterized a series of macromers incorporating photodegradbale ortho-nitrobenzyl (o-NB) groups in the macromer backbone. We formed hydrogels from these macromers via redox polymerization and quantified the apparent rate constants of degradation (kapp) of each via photorheology at 370 nm, 10 mW/cm(2). Decreasing the number of aryl ethers on the o-NB group increases kapp, and changing the functionality from primary to seconday at the benzylic site dramatically increases kapp. Human mesenchymal stem cells (hMSCs) survive encapsulation in the hydrogels (90% viability postencapsulation). By exploiting the differences in reactivity of two different o-NB linkers, we quantitatively demonstrate the biased release of one stem cell population (green-fluoroescent protein expressing hMSCs) over another (red-fluorescent protein expressing hMSCs).
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Affiliation(s)
- Donald R. Griffin
- Department of Bioengineering, University of California, Los Angeles, 410 Westwood Plaza, 5121 Eng V, Los Angeles, CA 90095 United States
| | - Andrea M. Kasko
- Department of Bioengineering, University of California, Los Angeles, 410 Westwood Plaza, 5121 Eng V, Los Angeles, CA 90095 United States
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