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Roy P, Kreofsky NW, Brown ME, Van Bruggen C, Reineke TM. Enhancing pDNA Delivery with Hydroquinine Polymers by Modulating Structure and Composition. JACS AU 2023; 3:1876-1889. [PMID: 37502160 PMCID: PMC10369409 DOI: 10.1021/jacsau.3c00126] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/26/2023] [Accepted: 06/12/2023] [Indexed: 07/29/2023]
Abstract
Quinine is a promising natural product building block for polymer-based nucleic acid delivery vehicles as its structure enables DNA binding through both intercalation and electrostatic interactions. However, studies exploring the potential of quinine-based polymers for nucleic acid delivery applications (transfection) are limited. In this work, we used a hydroquinine-functionalized monomer, HQ, with 2-hydroxyethyl acrylate to create a family of seven polymers (HQ-X, X = mole percentage of HQ), with mole percentages of HQ ranging from 12 to 100%. We developed a flow cytometer-based assay for studying the polymer-pDNA complexes (polyplex particles) directly and demonstrate that polymer composition and monomer structure influence polyplex characteristics such as the pDNA loading and the extent of adsorption of serum proteins on polyplex particles. Biological delivery experiments revealed that maximum transgene expression, outperforming commercial controls, was achieved with HQ-25 and HQ-35 as these two variants sustained gene expression over 96 h. HQ-44, HQ-60, and HQ-100 were not successful in inducing transgene expression, despite being able to deliver pDNA into the cells, highlighting that the release of pDNA is likely the bottleneck in transfection for polymers with higher HQ content. Using confocal imaging, we quantified the extent of colocalization between pDNA and lysosomes, proving the remarkable endosomal escape capabilities of the HQ-X polymers. Overall, this study demonstrates the advantages of HQ-X polymers as well as provides guiding principles for improving the monomer structure and polymer composition, supporting the development of the next generation of polymer-based nucleic acid delivery vehicles harnessing the power of natural products.
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Affiliation(s)
- Punarbasu Roy
- Department
of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Nicholas W. Kreofsky
- Department
of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Mary E. Brown
- University
Imaging Centers, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Craig Van Bruggen
- Department
of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Theresa M. Reineke
- Department
of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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2
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Nagelli CV, Evans CH, De la Vega RE. Gene Delivery to Chondrocytes. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1402:95-105. [PMID: 37052849 DOI: 10.1007/978-3-031-25588-5_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Delivering genes to chondrocytes offers new possibilities both clinically, for treating conditions that affect cartilage, and in the laboratory, for studying the biology of chondrocytes. Advances in gene therapy have created a number of different viral and non-viral vectors for this purpose. These vectors may be deployed in an ex vivo fashion, where chondrocytes are genetically modified outside the body, or by in vivo delivery where the vector is introduced directly into the body; in the case of articular and meniscal cartilage in vivo delivery is typically by intra-articular injection. Ex vivo delivery is favored in strategies for enhancing cartilage repair as these can be piggy-backed on existing cell-based technologies, such as autologous chondrocyte implantation, or used in conjunction with marrow-stimulating techniques such as microfracture. In vivo delivery to articular chondrocytes has proved more difficult, because the dense, anionic, extra-cellular matrix of cartilage limits access to the chondrocytes embedded within it. As Grodzinsky and colleagues have shown, the matrix imposes strict limits on the size and charge of particles able to diffuse through the entire depth of articular cartilage. Empirical observations suggest that the larger viral vectors, such as adenovirus (~100 nm), are unable to transduce chondrocytes in situ following intra-articular injection. However, adeno-associated virus (AAV; ~25 nm) is able to do so in horse joints. AAV is presently in clinical trials for arthritis gene therapy, and it will be interesting to see whether human chondrocytes are also transduced throughout the depth of cartilage by AAV following a single intra-articular injection. Viral vectors have been used to deliver genes to the intervertebral disk but there has been little research on gene transfer to chondrocytes in other cartilaginous tissues such as nasal, auricular or tracheal cartilage.
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3
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Shaabani E, Sharifiaghdam M, Faridi-Majidi R, De Smedt SC, Braeckmans K, Fraire JC. Gene therapy to enhance angiogenesis in chronic wounds. MOLECULAR THERAPY - NUCLEIC ACIDS 2022; 29:871-899. [PMID: 36159590 PMCID: PMC9464651 DOI: 10.1016/j.omtn.2022.08.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Skin injuries and chronic non-healing wounds are one of the major global burdens on the healthcare systems worldwide due to their difficult-to-treat nature, associated co-morbidities, and high health care costs. Angiogenesis has a pivotal role in the wound-healing process, which becomes impaired in many chronic non-healing wounds, leading to several healing disorders and complications. Therefore, induction or promotion of angiogenesis can be considered a promising approach for healing of chronic wounds. Gene therapy is one of the most promising upcoming strategies for the treatment of chronic wounds. It can be classified into three main approaches: gene augmentation, gene silencing, and gene editing. Despite the increasing number of encouraging results obtained using nucleic acids (NAs) as active pharmaceutical ingredients of gene therapy, efficient delivery of NAs to their site of action (cytoplasm or nucleus) remains a key challenge. Selection of the right therapeutic cargo and delivery methods is crucial for a favorable prognosis of the healing process. This article presents an overview of gene therapy and non-viral delivery methods for angiogenesis induction in chronic wounds.
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Microencapsulated Multifunctionalized Graphene Oxide Equipped with Chloroquine for Efficient and Sustained siRNA Delivery. BIOMED RESEARCH INTERNATIONAL 2022; 2022:5866361. [PMID: 35469347 PMCID: PMC9034959 DOI: 10.1155/2022/5866361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 03/15/2022] [Indexed: 11/26/2022]
Abstract
A multifunctionalized graphene oxide (GO)-based carrier with conjugation of aminated-polyethylene glycol (PEG-diamine), octaarginine (R8), and folic acid (FA), which also contains chloroquine (CQ), a lysosomotropic agent, is introduced. The cellular uptake mechanisms and intracellular targeting of FA-functionalized nanocarriers are examined. The localized releases of CQ and siRNA intracellular delivery are evaluated. Microencapsulation of the nanocarrier complexed with genes in layer-by-layer coating of alginate microbeads is also investigated. The covalently coconjugated FA with PEG and R8 provides a stable formulation with increased cellular uptake compared to FA-free carrier. The CQ-equipped nanocarrier shows a 95% release of CQ at lysosomal pH. The localized release of the drug inside the lysosomes is verified which accelerates the cargo discharge into cytoplasm.
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5
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Kumar R, Santa Chalarca CF, Bockman MR, Bruggen CV, Grimme CJ, Dalal RJ, Hanson MG, Hexum JK, Reineke TM. Polymeric Delivery of Therapeutic Nucleic Acids. Chem Rev 2021; 121:11527-11652. [PMID: 33939409 DOI: 10.1021/acs.chemrev.0c00997] [Citation(s) in RCA: 128] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The advent of genome editing has transformed the therapeutic landscape for several debilitating diseases, and the clinical outlook for gene therapeutics has never been more promising. The therapeutic potential of nucleic acids has been limited by a reliance on engineered viral vectors for delivery. Chemically defined polymers can remediate technological, regulatory, and clinical challenges associated with viral modes of gene delivery. Because of their scalability, versatility, and exquisite tunability, polymers are ideal biomaterial platforms for delivering nucleic acid payloads efficiently while minimizing immune response and cellular toxicity. While polymeric gene delivery has progressed significantly in the past four decades, clinical translation of polymeric vehicles faces several formidable challenges. The aim of our Account is to illustrate diverse concepts in designing polymeric vectors towards meeting therapeutic goals of in vivo and ex vivo gene therapy. Here, we highlight several classes of polymers employed in gene delivery and summarize the recent work on understanding the contributions of chemical and architectural design parameters. We touch upon characterization methods used to visualize and understand events transpiring at the interfaces between polymer, nucleic acids, and the physiological environment. We conclude that interdisciplinary approaches and methodologies motivated by fundamental questions are key to designing high-performing polymeric vehicles for gene therapy.
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Affiliation(s)
- Ramya Kumar
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | | | - Matthew R Bockman
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Craig Van Bruggen
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Christian J Grimme
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Rishad J Dalal
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Mckenna G Hanson
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Joseph K Hexum
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Theresa M Reineke
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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6
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Wang Y, Bruggeman KF, Franks S, Gautam V, Hodgetts SI, Harvey AR, Williams RJ, Nisbet DR. Is Viral Vector Gene Delivery More Effective Using Biomaterials? Adv Healthc Mater 2021; 10:e2001238. [PMID: 33191667 DOI: 10.1002/adhm.202001238] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 10/03/2020] [Indexed: 12/16/2022]
Abstract
Gene delivery has been extensively investigated for introducing foreign genetic material into cells to promote expression of therapeutic proteins or to silence relevant genes. This approach can regulate genetic or epigenetic disorders, offering an attractive alternative to pharmacological therapy or invasive protein delivery options. However, the exciting potential of viral gene therapy has yet to be fully realized, with a number of clinical trials failing to deliver optimal therapeutic outcomes. Reasons for this include difficulty in achieving localized delivery, and subsequently lower efficacy at the target site, as well as poor or inconsistent transduction efficiency. Thus, ongoing efforts are focused on improving local viral delivery and enhancing its efficiency. Recently, biomaterials have been exploited as an option for more controlled, targeted and programmable gene delivery. There is a growing body of literature demonstrating the efficacy of biomaterials and their potential advantages over other delivery strategies. This review explores current limitations of gene delivery and the progress of biomaterial-mediated gene delivery. The combination of biomaterials and gene vectors holds the potential to surmount major challenges, including the uncontrolled release of viral vectors with random delivery duration, poorly localized viral delivery with associated off-target effects, limited viral tropism, and immune safety concerns.
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Affiliation(s)
- Yi Wang
- Laboratory of Advanced Biomaterials Research School of Engineering The Australian National University Canberra ACT 2601 Australia
| | - Kiara F. Bruggeman
- Laboratory of Advanced Biomaterials Research School of Engineering The Australian National University Canberra ACT 2601 Australia
| | - Stephanie Franks
- Laboratory of Advanced Biomaterials Research School of Engineering The Australian National University Canberra ACT 2601 Australia
| | - Vini Gautam
- Department of Biomedical Engineering The University of Melbourne Melbourne Victoria 3010 Australia
| | - Stuart I. Hodgetts
- School of Human Sciences The University of Western Australia Perth WA 6009 Australia
- Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Alan R. Harvey
- School of Human Sciences The University of Western Australia Perth WA 6009 Australia
- Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Richard J. Williams
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT) School of Medicine Deakin University Waurn Ponds VIC 3216 Australia
- Biofab3D St. Vincent's Hospital Fitzroy 3065 Australia
| | - David R. Nisbet
- Laboratory of Advanced Biomaterials Research School of Engineering The Australian National University Canberra ACT 2601 Australia
- Biofab3D St. Vincent's Hospital Fitzroy 3065 Australia
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7
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Jin H, Liu Z, Li W, Jiang Z, Li Y, Zhang B. Polyethylenimine-alginate nanocomposites based bone morphogenetic protein 2 gene-activated matrix for alveolar bone regeneration. RSC Adv 2019; 9:26598-26608. [PMID: 35528551 PMCID: PMC9070436 DOI: 10.1039/c9ra05164c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 08/18/2019] [Indexed: 12/13/2022] Open
Abstract
The repair and treatment of lost or damaged alveolar bone is of great significance in dentistry. Gene-activated matrix (GAM) technology provides a new way for bone regeneration. It is a local gene delivery system, which can not only recruit cells, but also influence their fate. For this purpose, we fabricated a bone morphogenetic protein 2 (BMP-2) gene-loaded absorbable gelatin sponge (AGS) and studied its effect on promoting alveolar bone formation and preventing resorption following tooth extraction in rats. In order to obtain better transfection efficiency, polyethylenimine-alginate (PEI-al) nanocomposites were synthesized and used as gene vectors to deliver BMP-2 cDNA plasmids (PEI-al/pBMP-2). The transfection efficiency, BMP-2 protein expression and osteogenic differentiation of the cells were investigated in vitro. In vivo, we established an alveolar bone regeneration model by extracting the rats' left mandibular incisors. The rats were randomly assigned into 3 groups: control group, unfilled sockets; AGS group, sockets filled with PEI-al solution-loaded gelatin sponges; AGS/BMP group, sockets filled with PEI-al/pBMP-2 solution-loaded gelatin sponge. Radiological and histological assays were performed at 4 and 8 weeks later. In vitro transfection assays indicated that PEI-al/pBMP-2 complexes could effectively transfect MC3T3-E1 cells, promoting the secretion of BMP-2 protein for at least 14 days, as well as increasing the expression of osteogenesis-related gene, ALP activity and calcium deposition. In vivo, western blot analysis showed BMP-2 protein was expressed in bone tissues of AGS/BMP group. The relative height of the residual alveolar ridge and bone mineral density (BMD) of the AGS/BMP group were significantly greater than those in the AGS and control groups at 4 and 8 weeks, respectively. Histological examination showed that, at 4 weeks, osteoblasts had grown in a cubic shape around the new bone in the AGS/BMP group, suggesting new bone formation. In conclusion, the combination of PEI-al/pBMP-2 complexes and gelatin sponge could promote alveolar bone regeneration, which may provide an easy and valuable method for alveolar ridge preservation and augmentation. Polyethylenimine-alginate nanocomposites based bone morphogenetic protein 2 gene-activated matrix may provide an easy and valuable method for alveolar ridge regeneration.![]()
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Affiliation(s)
- Han Jin
- Institute of Hard Tissue Development and Regeneration
- The Second Affiliated Hospital of Harbin Medical University
- Harbin
- China
- Heilongjiang Academy of Medical Sciences
| | - Zhongshuang Liu
- Institute of Hard Tissue Development and Regeneration
- The Second Affiliated Hospital of Harbin Medical University
- Harbin
- China
- Heilongjiang Academy of Medical Sciences
| | - Wei Li
- Department of Stomatology
- Harbin Children's Hospital
- Harbin
- China
| | - Zhuling Jiang
- Institute of Hard Tissue Development and Regeneration
- The Second Affiliated Hospital of Harbin Medical University
- Harbin
- China
- Department of Implantology
| | - Ying Li
- Institute of Hard Tissue Development and Regeneration
- The Second Affiliated Hospital of Harbin Medical University
- Harbin
- China
- Heilongjiang Academy of Medical Sciences
| | - Bin Zhang
- Institute of Hard Tissue Development and Regeneration
- The Second Affiliated Hospital of Harbin Medical University
- Harbin
- China
- Heilongjiang Academy of Medical Sciences
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8
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Wang X, Coradin T, Hélary C. Modulating inflammation in a cutaneous chronic wound model by IL-10 released from collagen-silica nanocomposites via gene delivery. Biomater Sci 2018; 6:398-406. [PMID: 29337327 DOI: 10.1039/c7bm01024a] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Cutaneous chronic wounds remain a major clinical challenge which requires the development of novel wound dressings. Previously, we showed that collagen-silica nanocomposites consisting of polyethyleneimine (PEI)-DNA complexes associated with silica nanoparticles (SiNP), collagen hydrogel and 3T3 fibroblasts, can work as a local "cell factory". Indeed, the "in-gel" transfection leads to a sustained production and release of biomolecules. Herein, we further explored the possibility for nanocomposites to deliver interleukin-10 (IL-10), a potent anti-inflammatory cytokine, which favors tissue repair. Its anti-inflammatory effect was evaluated in an in vitro inflammation model carried out by LPS (lipopolysaccharide) activation of macrophages embedded in collagen gel. The IL-10 synthesis from nanocomposites was detected over one week in the range of 200-400 pg mL-1 and reached a maximum at day 5 without any observed cytotoxic effects. PEI10-SiNP outperformed free PEI10 and PEI25-SiNP, implying that the introduction of SiNP improved the transfection efficiency of low Mw of PEI. In addition, the structure and mechanical properties of collagen-silica nanocomposites were stable over one week. Subsequently, the ability of nanocomposites to modulate inflammation was tested in a 3D model of inflammation. The decrease of TNF-α and IL-1β gene expression by 20-80% indicated successful inhibition of inflammation by IL-10 released from nanocomposites. Taken together, the nanocomposites are capable of producing effective doses of IL-10 which inhibit the synthesis of pro-inflammatory cytokines and favor the expression of wound healing cytokines. Therefore, the as-constructed 3D gene delivery system represents a promising strategy for the controlled release of therapeutic biomolecules favoring cutaneous wound healing.
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Affiliation(s)
- Xiaolin Wang
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7574, Laboratoire de Chimie de la Matière Condensée de Paris, F-75005 Paris, France.
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9
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Xue M, Zhao R, Lin H, Jackson C. Delivery systems of current biologicals for the treatment of chronic cutaneous wounds and severe burns. Adv Drug Deliv Rev 2018; 129:219-241. [PMID: 29567398 DOI: 10.1016/j.addr.2018.03.002] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 02/08/2018] [Accepted: 03/13/2018] [Indexed: 12/15/2022]
Abstract
While wound therapy remains a clinical challenge in current medical practice, much effort has focused on developing biological therapeutic approaches. This paper presents a comprehensive review of delivery systems for current biologicals for the treatment of chronic wounds and severe burns. The biologicals discussed here include proteins such as growth factors and gene modifying molecules, which may be delivered to wounds free, encapsulated, or released from living systems (cells, skin grafts or skin equivalents) or biomaterials. Advances in biomaterial science and technologies have enabled the synthesis of delivery systems such as scaffolds, hydrogels and nanoparticles, designed to not only allow spatially and temporally controlled release of biologicals, but to also emulate the natural extracellular matrix microenvironment. These technologies represent an attractive field for regenerative wound therapy, by offering more personalised and effective treatments.
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10
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Wu P, Chen H, Jin R, Weng T, Ho JK, You C, Zhang L, Wang X, Han C. Non-viral gene delivery systems for tissue repair and regeneration. J Transl Med 2018; 16:29. [PMID: 29448962 PMCID: PMC5815227 DOI: 10.1186/s12967-018-1402-1] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 02/07/2018] [Indexed: 12/11/2022] Open
Abstract
Critical tissue defects frequently result from trauma, burns, chronic wounds and/or surgery. The ideal treatment for such tissue loss is autografting, but donor sites are often limited. Tissue engineering (TE) is an inspiring alternative for tissue repair and regeneration (TRR). One of the current state-of-the-art methods for TRR is gene therapy. Non-viral gene delivery systems (nVGDS) have great potential for TE and have several advantages over viral delivery including lower immunogenicity and toxicity, better cell specificity, better modifiability, and higher productivity. However, there is no ideal nVGDS for TRR, hence, there is widespread research to improve their properties. This review introduces the basic principles and key aspects of commonly-used nVGDSs. We focus on recent advances in their applications, current challenges, and future directions.
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Affiliation(s)
- Pan Wu
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China
| | - Haojiao Chen
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China
| | - Ronghua Jin
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China
| | - Tingting Weng
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China
| | - Jon Kee Ho
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China
| | - Chuangang You
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China
| | - Liping Zhang
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China
| | - Xingang Wang
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China.
| | - Chunmao Han
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China.
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11
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David G, Clima L, Calin M, Constantinescu CA, Balan-Porcarasu M, Uritu CM, Simionescu BC. Squalene/polyethylenimine based non-viral vectors: synthesis and use in systems for sustained gene release. Polym Chem 2018. [DOI: 10.1039/c7py01720k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New squalene/BPEI conjugates, acting as efficient gene carriers, were included in the 3D matrix, yielding tunable DNA release and long-term bioavailability.
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Affiliation(s)
- Geta David
- Department of Natural and Synthetic Polymers
- “Gh. Asachi” Technical University of Iasi
- Iasi 700050
- Romania
| | - Lilia Clima
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- Iasi 700487
- Romania
| | - Manuela Calin
- Institute of Cellular Biology and Pathology “Nicolae Simionescu” of Romanian Academy
- Bucharest 050568
- Romania
| | | | | | - Cristina Mariana Uritu
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- Iasi 700487
- Romania
- Advanced Research and Development Center in Experimental Medicine
- “Gr. T. Popa” University of Medicine and Pharmacy
| | - Bogdan C. Simionescu
- Department of Natural and Synthetic Polymers
- “Gh. Asachi” Technical University of Iasi
- Iasi 700050
- Romania
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
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12
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13
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Xue J, Lin H, Bean A, Tang Y, Tan J, Tuan RS, Wang B. One-Step Fabrication of Bone Morphogenetic Protein-2 Gene-Activated Porous Poly-L-Lactide Scaffold for Bone Induction. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2017; 7:50-59. [PMID: 29018836 PMCID: PMC5626914 DOI: 10.1016/j.omtm.2017.08.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 08/31/2017] [Indexed: 01/18/2023]
Abstract
Bone morphogenetic protein 2 (BMP2) is an efficacious inducer for the osteogenesis of mesenchymal stem cells (MSCs). Conventional applications of BMP2 have involved either the direct incorporation of BMP2 protein or ex vivo BMP2 gene transfer into stem cells prior to their transplantation. These approaches are able to promote bone formation to some extent; however, they are hampered by either the lack of stability and sustainability of BMP2 protein or the time-consuming and cost-prohibitive in vitro cell culture procedure. To overcome these limitations, we have developed a gene-activated poly-L-lactide acid (PLLA) scaffold with the encapsulation of recombinant adeno-associated viral (AAV) vector encoding a full-length cDNA of human BMP2 using an ice-based microparticle porogenization method that was recently developed. Results showed continuous release of AAV particles from the micropores of scaffolds for up to 1 week, subsequently transducing embedded human MSCs and producing functional BMP2. MSCs within scaffolds underwent efficacious osteogenesis, on the basis of osteoinductive gene expression and osteogenic differentiation, which resulted in robust new bone formation in vivo at 4 weeks. These findings show the potential of the technology toward developing clinical applications of a rapid, cost-effective, and potentially point-of-care approach for the repair of bone defects.
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Affiliation(s)
- Jingwen Xue
- Center for Cellular and Molecular Engineering, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA.,Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA.,School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Hang Lin
- Center for Cellular and Molecular Engineering, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA.,Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA
| | - Allison Bean
- Center for Cellular and Molecular Engineering, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA.,Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA
| | - Ying Tang
- Center for Cellular and Molecular Engineering, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA.,Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA
| | - Jian Tan
- Center for Cellular and Molecular Engineering, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA.,Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA
| | - Rocky S Tuan
- Center for Cellular and Molecular Engineering, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA.,Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA.,McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA
| | - Bing Wang
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA.,McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA
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14
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Abu-Rub MT, Newland B, Naughton M, Wang W, McMahon S, Pandit A. Non-viral xylosyltransferase-1 siRNA delivery as an effective alternative to chondroitinase in an in vitro model of reactive astrocytes. Neuroscience 2016; 339:267-275. [PMID: 27743984 DOI: 10.1016/j.neuroscience.2016.10.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 10/05/2016] [Accepted: 10/06/2016] [Indexed: 12/25/2022]
Abstract
Reactive astrocytosis and the subsequent glial scar is ubiquitous to injuries of the central nervous system, especially spinal cord injury (SCI) and primarily serves to protect against further damage, but is also a prominent inhibitor of regeneration. Manipulating the glial scar by targeting chondroitin sulfate proteoglycans (CSPGs) has been the focus of much study as a means to improve axon regeneration and subsequently functional recovery. In this study we investigate the ability of small interfering RNA (siRNA) delivered by a non-viral polymer vector to silence the rate-limiting enzyme involved in CSPG synthesis. Gene expression of this enzyme, xylosyltransferase-1, was silenced by 65% in Neu7 astrocytes which conferred a reduced expression of CSPGs. Furthermore, conditioned medium taken from treated Neu7s, or co-culture experiments with dorsal root ganglia (DRG) showed that siRNA treatment resulted in a more permissive environment for DRG neurite outgrowth than treatment with chondroitinase ABC alone. These results indicate that there is a role for targeted siRNA therapy using polymeric vectors to facilitate regeneration of injured axons following central nervous system injury.
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Affiliation(s)
- Mohammad T Abu-Rub
- Network of Excellence for Functional Biomaterials (NFB), National University of Ireland, Galway, Ireland
| | - Ben Newland
- Network of Excellence for Functional Biomaterials (NFB), National University of Ireland, Galway, Ireland
| | - Michelle Naughton
- Network of Excellence for Functional Biomaterials (NFB), National University of Ireland, Galway, Ireland
| | - Wenxin Wang
- Network of Excellence for Functional Biomaterials (NFB), National University of Ireland, Galway, Ireland
| | - Siobhan McMahon
- Department of Anatomy, National University of Ireland, Galway, Ireland
| | - Abhay Pandit
- Network of Excellence for Functional Biomaterials (NFB), National University of Ireland, Galway, Ireland.
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15
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Freudenberg U, Liang Y, Kiick KL, Werner C. Glycosaminoglycan-Based Biohybrid Hydrogels: A Sweet and Smart Choice for Multifunctional Biomaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:8861-8891. [PMID: 27461855 PMCID: PMC5152626 DOI: 10.1002/adma.201601908] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Revised: 05/30/2016] [Indexed: 05/12/2023]
Abstract
Glycosaminoglycans (GAGs) govern important functional characteristics of the extracellular matrix (ECM) in living tissues. Incorporation of GAGs into biomaterials opens up new routes for the presentation of signaling molecules, providing control over development, homeostasis, inflammation, and tumor formation and progression. Recent approaches to GAG-based materials are reviewed, highlighting the formation of modular, tunable biohybrid hydrogels by covalent and non-covalent conjugation schemes, including both theory-driven design concepts and advanced processing technologies. Examples of the application of the resulting materials in biomedical studies are provided. For perspective, solid-phase and chemoenzymatic oligosaccharide synthesis methods for GAG-derived motifs, rational and high-throughput design strategies for GAG-based materials, and the utilization of the factor-scavenging characteristics of GAGs are highlighted.
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Affiliation(s)
- Uwe Freudenberg
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC), Technische Universität Dresden, Center for Regenerative Therapies Dresden (CRTD), Hohe Str. 6, 01069 Dresden, Germany
| | - Yingkai Liang
- Department of Materials Science and Engineering and Department of Biomedical Engineering, University of Delaware, Newark, Delaware 19716, United States,
| | - Kristi L. Kiick
- Department of Materials Science and Engineering and Department of Biomedical Engineering, University of Delaware, Newark, Delaware 19716, United States and Delaware Biotechnology Institute, 15 Innovation Way, Newark, Delaware 19716, United States
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Center of Biomaterials Dresden (MBC), Technische Universität Dresden, Center for Regenerative Therapies Dresden (CRTD), Hohe Str. 6, 01069 Dresden, Germany
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16
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Siegman S, Truong NF, Segura T. Encapsulation of PEGylated low-molecular-weight PEI polyplexes in hyaluronic acid hydrogels reduces aggregation. Acta Biomater 2015; 28:45-54. [PMID: 26391497 DOI: 10.1016/j.actbio.2015.09.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 08/14/2015] [Accepted: 09/16/2015] [Indexed: 12/29/2022]
Abstract
The effective delivery of DNA locally could increase the applicability of gene therapy in tissue regeneration and therapeutic angiogenesis. One promising approach is through use of porous hydrogel scaffolds that incorporate and deliver DNA in the form of nanoparticles to the affected sites. While we have previously reported on caged nanoparticle encapsulation (CnE) to load DNA polyplexes within hydrogels at high concentrations without aggregation, frequent issues with limited polyplex release following CnE have been encountered. In this study, we report two alternative approaches to polyplex presentation for decreasing aggregation in porous hydrogels. The first approach reduces polyplex aggregation by utilizing polyethylene glycol modification of the gene carrier polymer polyethyleneimine (sPEG-PEI) to mitigate charge-charge interactions between polyplexes and the scaffold during gelation. The second approach electrostatically presents polyplexes on the surfaces of scaffold pores as opposed to an encapsulated presentation. The sPEG-PEI polymer formed a smaller, less toxic, and more stable polyplex that exhibited less aggregation within HA gels when compared to the traditionally used linear PEI (LPEI) polymer. Surface-coated polyplexes also resulted in a more homogenous distribution of polyplexes in hydrogels. Furthermore, sPEG-PEI polyplexes retained transfection abilities comparable to LPEI in 3D surface-coated transfections. These results demonstrate a significant improvement in scaffold-mediated gene delivery and show promise in applications to multi-gene delivery systems. STATEMENT OF SIGNIFICANCE A promising gene delivery approach for regenerative medicine is implanting porous hydrogel scaffolds loaded with DNA nanoparticles for delivery to affected sites. However, loading DNA polyplexes at high concentrations within hydrogels results in significant aggregation. Here, we describe two methods for decreasing aggregation of DNA polyplexes in porous gels. First, the gene carrier polymer polyethyleneimine (PEI) was modified with polyethylene glycol (sPEG-PEI) to mitigate the electrostatic interactions between polyplexes and scaffold polymer to in turn decrease aggregation. Second, polyplexes were presented along the surfaces of the pores of the hydrogel instead of being encapsulated within the gel. These methods allow for highly tunable and sustained transgene expression from scaffold-mediated gene delivery while avoiding polyplex aggregation.
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Affiliation(s)
- Shayne Siegman
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA, USA
| | - Norman F Truong
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA, USA
| | - Tatiana Segura
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA, USA.
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17
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Oliva N, Carcole M, Beckerman M, Seliktar S, Hayward A, Stanley J, Parry NMA, Edelman ER, Artzi N. Regulation of dendrimer/dextran material performance by altered tissue microenvironment in inflammation and neoplasia. Sci Transl Med 2015; 7:272ra11. [PMID: 25632035 DOI: 10.1126/scitranslmed.aaa1616] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A "one material fits all" mindset ignores profound differences in target tissues that affect their responses and reactivity. Yet little attention has been paid to the role of diseased tissue on material performance, biocompatibility, and healing capacity. We assessed material-tissue interactions with a prototypical adhesive material based on dendrimer/dextran and colon as a model tissue platform. Adhesive materials have high sensitivity to changes in their environment and can be exploited to probe and quantify the influence of even subtle modifications in tissue architecture and biology. We studied inflammatory colitis and colon cancer and found not only a difference in adhesion related to surface chemical interactions but also the existence of a complex interplay that determined the overall dendrimer/dextran biomaterial compatibility. Compatibility was contextual, not simply a constitutive property of the material, and was related to the extent and nature of immune cells in the diseased environment present before material implantation. We then showed how to use information about local alterations of the tissue microenvironment to assess disease severity. This in turn guided us to an optimal dendrimer/dextran formulation choice using a predictive model based on clinically relevant conditions.
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Affiliation(s)
- Nuria Oliva
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA
| | - Maria Carcole
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA. Department of Industrial Engineering, Institut Quimic de Sarrià, Universitat Ramon Llull, Barcelona 08017, Spain
| | - Margarita Beckerman
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA. Ort Braude College, Karmiel 21982, Israel
| | - Sivan Seliktar
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA. Ort Braude College, Karmiel 21982, Israel
| | - Alison Hayward
- Concord Biomedical Sciences and Emerging Technologies, Lexington, MA 02421, USA
| | - James Stanley
- Concord Biomedical Sciences and Emerging Technologies, Lexington, MA 02421, USA
| | | | - Elazer R Edelman
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA. Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Natalie Artzi
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA. Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
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18
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Boateng J, Catanzano O. Advanced Therapeutic Dressings for Effective Wound Healing--A Review. J Pharm Sci 2015; 104:3653-3680. [PMID: 26308473 DOI: 10.1002/jps.24610] [Citation(s) in RCA: 481] [Impact Index Per Article: 53.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 07/20/2015] [Accepted: 07/21/2015] [Indexed: 12/15/2022]
Abstract
Advanced therapeutic dressings that take active part in wound healing to achieve rapid and complete healing of chronic wounds is of current research interest. There is a desire for novel strategies to achieve expeditious wound healing because of the enormous financial burden worldwide. This paper reviews the current state of wound healing and wound management products, with emphasis on the demand for more advanced forms of wound therapy and some of the current challenges and driving forces behind this demand. The paper reviews information mainly from peer-reviewed literature and other publicly available sources such as the US FDA. A major focus is the treatment of chronic wounds including amputations, diabetic and leg ulcers, pressure sores, and surgical and traumatic wounds (e.g., accidents and burns) where patient immunity is low and the risk of infections and complications are high. The main dressings include medicated moist dressings, tissue-engineered substitutes, biomaterials-based biological dressings, biological and naturally derived dressings, medicated sutures, and various combinations of the above classes. Finally, the review briefly discusses possible prospects of advanced wound healing including some of the emerging physical approaches such as hyperbaric oxygen, negative pressure wound therapy and laser wound healing, in routine clinical care.
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Affiliation(s)
- Joshua Boateng
- Department of Pharmaceutical, Chemical and Environmental Sciences, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, UK.
| | - Ovidio Catanzano
- Department of Pharmaceutical, Chemical and Environmental Sciences, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, UK
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19
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Cam C, Zhu S, Truong NF, Scumpia PO, Segura T. Systematic evaluation of natural scaffolds in cutaneous wound healing. J Mater Chem B 2015; 3:7986-7992. [PMID: 26509037 DOI: 10.1039/c5tb00807g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Current strategies to improve wound healing are often created from multiple components that may include a scaffold, cells, and bioactive cues. Acellular natural hydrogels are an attractive approach since the material's intrinsic biological activity can be paired with mechanical properties similar to soft tissue to induce a host's response toward healing. In this report, a systematic evaluation was conducted to study the effect of hydrogel scaffold implantation in skin healing using a human-relevant murine wound healing model. Fibrin, micro porous hyaluronic acid, and composite hydrogels were utilized to study the effect of conductive scaffolds on the wound healing process. Composite hydrogels were paired with plasmin-degradable VEGF nanocapsules to investigate its impact as an inductive composite hydrogel on tissue repair. By 7 days, wound healing and vessel maturation within the newly formed tissue was significantly improved by the inclusion of porous scaffold architecture and VEGF nanocapsules.
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Affiliation(s)
- Cynthia Cam
- Department of Bioengineering, University of California at Los Angeles, 420 Westwood Plaza, Los Angeles, CA, 90095, USA. ; ; Tel: +1(310)794-42248
| | - Suwei Zhu
- Department of Chemical and Biomolecular Engineering, University of California at Los Angeles, 420 Westwood Plaza, Los Angeles, CA, 90095, USA. ; ; Tel: +1(310)794-42248, +1(310)206-3980
| | - Norman F Truong
- Department of Chemical and Biomolecular Engineering, University of California at Los Angeles, 420 Westwood Plaza, Los Angeles, CA, 90095, USA. ; ; Tel: +1(310)794-42248, +1(310)206-3980
| | - Philip O Scumpia
- Department of Medicine, Division of Dermatology, University of California at Los Angeles, 52-121 CHS, Los Angeles, CA, 90095, USA. ; Tel: +1(310)825-1531
| | - Tatiana Segura
- Department of Chemical and Biomolecular Engineering, University of California at Los Angeles, 420 Westwood Plaza, Los Angeles, CA, 90095, USA. ; ; Tel: +1(310)794-42248, +1(310)206-3980
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20
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MicroRNA delivery for regenerative medicine. Adv Drug Deliv Rev 2015; 88:108-22. [PMID: 26024978 DOI: 10.1016/j.addr.2015.05.014] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 05/13/2015] [Accepted: 05/21/2015] [Indexed: 12/26/2022]
Abstract
MicroRNA (miRNA) directs post-transcriptional regulation of a network of genes by targeting mRNA. Although relatively recent in development, many miRNAs direct differentiation of various stem cells including induced pluripotent stem cells (iPSCs), a major player in regenerative medicine. An effective and safe delivery of miRNA holds the key to translating miRNA technologies. Both viral and nonviral delivery systems have seen success in miRNA delivery, and each approach possesses advantages and disadvantages. A number of studies have demonstrated success in augmenting osteogenesis, improving cardiogenesis, and reducing fibrosis among many other tissue engineering applications. A scaffold-based approach with the possibility of local and sustained delivery of miRNA is particularly attractive since the physical cues provided by the scaffold may synergize with the biochemical cues induced by miRNA therapy. Herein, we first briefly cover the application of miRNA to direct stem cell fate via replacement and inhibition therapies, followed by the discussion of the promising viral and nonviral delivery systems. Next we present the unique advantages of a scaffold-based delivery in achieving lineage-specific differentiation and tissue development.
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21
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Tokatlian T, Cam C, Segura T. Porous hyaluronic acid hydrogels for localized nonviral DNA delivery in a diabetic wound healing model. Adv Healthc Mater 2015; 4:1084-91. [PMID: 25694196 DOI: 10.1002/adhm.201400783] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 01/18/2015] [Indexed: 01/08/2023]
Abstract
The treatment of impaired wounds requires the use of biomaterials that can provide mechanical and biological queues to the surrounding environment to promote angiogenesis, granulation tissue formation, and wound closure. Porous hydrogels show promotion of angiogenesis, even in the absence of proangiogenic factors. It is hypothesized that the added delivery of nonviral DNA encoding for proangiogenic growth factors can further enhance this effect. Here, 100 and 60 μm porous and nonporous (n-pore) hyaluronic acid-MMP hydrogels with encapsulated reporter (pGFPluc) or proangiogenic (pVEGF) plasmids are used to investigate scaffold-mediated gene delivery for local gene therapy in a diabetic wound healing mouse model. Porous hydrogels allow for significantly faster wound closure compared with n-pore hydrogels, which do not degrade and essentially provide a mechanical barrier to closure. Interestingly, the delivery of pDNA/PEI polyplexes positively promotes granulation tissue formation even when the DNA does not encode for an angiogenic protein. And although transfected cells are present throughout the granulation tissue surrounding, all hydrogels at 2 weeks, pVEGF delivery does not further enhance the angiogenic response. Despite this, the presence of transfected cells shows promise for the use of polyplex-loaded porous hydrogels for local gene delivery in the treatment of diabetic wounds.
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Affiliation(s)
- Talar Tokatlian
- Department of Chemical and Biomolecular Engineering; University of California, Los Angeles; 5531 Boelter Hall, 420 Westwood Plaza Los Angeles CA 90095-1592 USA
| | - Cynthia Cam
- Department of Bioengineering; University of California, Los Angeles; 5531 Boelter Hall, 420 Westwood Plaza Los Angeles CA 90095-1592 USA
| | - Tatiana Segura
- Department of Chemical and Biomolecular Engineering; University of California, Los Angeles; 5531 Boelter Hall, 420 Westwood Plaza Los Angeles CA 90095-1592 USA
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22
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Pilipchuk SP, Plonka AB, Monje A, Taut AD, Lanis A, Kang B, Giannobile WV. Tissue engineering for bone regeneration and osseointegration in the oral cavity. Dent Mater 2015; 31:317-38. [PMID: 25701146 DOI: 10.1016/j.dental.2015.01.006] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Revised: 12/19/2014] [Accepted: 01/11/2015] [Indexed: 02/07/2023]
Abstract
OBJECTIVE The focus of this review is to summarize recent advances on regenerative technologies (scaffolding matrices, cell/gene therapy and biologic drug delivery) to promote reconstruction of tooth and dental implant-associated bone defects. METHODS An overview of scaffolds developed for application in bone regeneration is presented with an emphasis on identifying the primary criteria required for optimized scaffold design for the purpose of regenerating physiologically functional osseous tissues. Growth factors and other biologics with clinical potential for osteogenesis are examined, with a comprehensive assessment of pre-clinical and clinical studies. Potential novel improvements to current matrix-based delivery platforms for increased control of growth factor spatiotemporal release kinetics are highlighting including recent advancements in stem cell and gene therapy. RESULTS An analysis of existing scaffold materials, their strategic design for tissue regeneration, and use of growth factors for improved bone formation in oral regenerative therapies results in the identification of current limitations and required improvements to continue moving the field of bone tissue engineering forward into the clinical arena. SIGNIFICANCE Development of optimized scaffolding matrices for the predictable regeneration of structurally and physiologically functional osseous tissues is still an elusive goal. The introduction of growth factor biologics and cells has the potential to improve the biomimetic properties and regenerative potential of scaffold-based delivery platforms for next-generation patient-specific treatments with greater clinical outcome predictability.
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Affiliation(s)
- Sophia P Pilipchuk
- Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, 1101 Beal Avenue, Ann Arbor, MI 48109, USA.
| | - Alexandra B Plonka
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, 1011 N. University Avenue, Ann Arbor, MI 48109, USA.
| | - Alberto Monje
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, 1011 N. University Avenue, Ann Arbor, MI 48109, USA.
| | - Andrei D Taut
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, 1011 N. University Avenue, Ann Arbor, MI 48109, USA.
| | - Alejandro Lanis
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, 1011 N. University Avenue, Ann Arbor, MI 48109, USA.
| | - Benjamin Kang
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, 1011 N. University Avenue, Ann Arbor, MI 48109, USA.
| | - William V Giannobile
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, 1011 N. University Avenue, Ann Arbor, MI 48109, USA; Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, 1101 Beal Avenue, Ann Arbor, MI 48109, USA.
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23
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Wang X, Hélary C, Coradin T. Local and sustained gene delivery in silica-collagen nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2015; 7:2503-2511. [PMID: 25569123 DOI: 10.1021/am507389q] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Local delivery of biomolecules from hydrogels is highly challenging because of their rapid diffusion and degradation. Gene therapy represents an alternative that allows for the prolonged production of proteins by transfected cells. In this study, we have developed nanocomposites consisting of DNA-polyethylenimine-silica nanoparticle complexes coencapsulated with fibroblasts within collagen hydrogels. Through the modulation of the particle size and polyethylenimine molecular weight, it was possible to achieve "in-gel" transfection permitting the sustained production of biomolecules from hydrogels over 1 week. Alternative configurations consisting of particle addition to cellularized gels and cell culture in the presence of complex-containing hydrogels were also investigated. These studies demonstrated that particle encapsulation limits DNA and silica dissemination outside the collagen hydrogels. They also show the key role of cell proliferation within collagen hydrogels on the transfection efficiency. Such nanocomposites therefore constitute promising materials for the development of novel gene delivery systems to promote tissue repair.
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Affiliation(s)
- Xiaolin Wang
- Sorbonne Universités , UPMC Univ Paris 06, CNRS, Collège de France, UMR 7574, Chimie de la Matière Condensée de Paris, F-75005, Paris, France
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24
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Paul A, Hasan A, Kindi HA, Gaharwar AK, Rao VTS, Nikkhah M, Shin SR, Krafft D, Dokmeci MR, Shum-Tim D, Khademhosseini A. Injectable graphene oxide/hydrogel-based angiogenic gene delivery system for vasculogenesis and cardiac repair. ACS NANO 2014; 8:8050-62. [PMID: 24988275 PMCID: PMC4148162 DOI: 10.1021/nn5020787] [Citation(s) in RCA: 342] [Impact Index Per Article: 34.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The objective of this study was to develop an injectable and biocompatible hydrogel which can efficiently deliver a nanocomplex of graphene oxide (GO) and vascular endothelial growth factor-165 (VEGF) pro-angiogenic gene for myocardial therapy. For the study, an efficient nonviral gene delivery system using polyethylenimine (PEI) functionalized GO nanosheets (fGO) complexed with DNAVEGF was formulated and incorporated in the low-modulus methacrylated gelatin (GelMA) hydrogel to promote controlled and localized gene therapy. It was hypothesized that the fGOVEGF/GelMA nanocomposite hydrogels can efficiently transfect myocardial tissues and induce favorable therapeutic effects without invoking cytotoxic effects. To evaluate this hypothesis, a rat model with acute myocardial infarction was used, and the therapeutic hydrogels were injected intramyocardially in the peri-infarct regions. The secreted VEGF from in vitro transfected cardiomyocytes demonstrated profound mitotic activities on endothelial cells. A significant increase in myocardial capillary density at the injected peri-infarct region and reduction in scar area were noted in the infarcted hearts with fGOVEGF/GelMA treatment compared to infarcted hearts treated with untreated sham, GelMA and DNAVEGF/GelMA groups. Furthermore, the fGOVEGF/GelMA group showed significantly higher (p < 0.05, n = 7) cardiac performance in echocardiography compared to other groups, 14 days postinjection. In addition, no significant differences were noticed between GO/GelMA and non-GO groups in the serum cytokine levels and quantitative PCR based inflammatory microRNA (miRNA) marker expressions at the injected sites. Collectively, the current findings suggest the feasibility of a combined hydrogel-based gene therapy system for ischemic heart diseases using nonviral hybrid complex of fGO and DNA.
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Affiliation(s)
- Arghya Paul
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Brigham and Women’s Hospital, Harvard Medical School, 65 Landsdowne Street, Cambridge, Massachusetts 02139, United States
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts 02115, United States
- Biomaterials Innovation Research Center, Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Anwarul Hasan
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Brigham and Women’s Hospital, Harvard Medical School, 65 Landsdowne Street, Cambridge, Massachusetts 02139, United States
- Biomaterials Innovation Research Center, Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hamood Al Kindi
- Divisions of Cardiac Surgery and Surgical Research, McGill University Health Centre, The Royal Victoria Hospital, Room S8-73b, 687 Pine Avenue, West Montreal, Quebec H3A 1A1, Canada
| | - Akhilesh K. Gaharwar
- Texas A&M University, 5024 Emerging Technology Building, College Station, Texas 77843, United States
| | - Vijayaraghava T. S. Rao
- Neuroimmunology Unit, Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec H3A 1A1, Canada
| | - Mehdi Nikkhah
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Brigham and Women’s Hospital, Harvard Medical School, 65 Landsdowne Street, Cambridge, Massachusetts 02139, United States
- Biomaterials Innovation Research Center, Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Su Ryon Shin
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Brigham and Women’s Hospital, Harvard Medical School, 65 Landsdowne Street, Cambridge, Massachusetts 02139, United States
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts 02115, United States
- Biomaterials Innovation Research Center, Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Dorothee Krafft
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Brigham and Women’s Hospital, Harvard Medical School, 65 Landsdowne Street, Cambridge, Massachusetts 02139, United States
- Biomaterials Innovation Research Center, Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Mehmet R. Dokmeci
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Brigham and Women’s Hospital, Harvard Medical School, 65 Landsdowne Street, Cambridge, Massachusetts 02139, United States
- Biomaterials Innovation Research Center, Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Dominique Shum-Tim
- Divisions of Cardiac Surgery and Surgical Research, McGill University Health Centre, The Royal Victoria Hospital, Room S8-73b, 687 Pine Avenue, West Montreal, Quebec H3A 1A1, Canada
| | - Ali Khademhosseini
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Brigham and Women’s Hospital, Harvard Medical School, 65 Landsdowne Street, Cambridge, Massachusetts 02139, United States
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts 02115, United States
- Biomaterials Innovation Research Center, Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul 130-701, Republic of Korea
- Department of Physics, King Abdulaziz University, Jeddah 21569, Saudi Arabia
- Address correspondence to
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