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Graham JP, Zhang Y, He L, Gonzalez-Fernandez T. CRISPR-GEM: A Novel Machine Learning Model for CRISPR Genetic Target Discovery and Evaluation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.01.601587. [PMID: 39005295 PMCID: PMC11244939 DOI: 10.1101/2024.07.01.601587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
CRISPR gene editing strategies are shaping cell therapies through precise and tunable control over gene expression. However, achieving reliable therapeutic effects with improved safety and efficacy requires informed target gene selection. This depends on a thorough understanding of the involvement of target genes in gene regulatory networks (GRNs) that regulate cell phenotype and function. Machine learning models have been previously used for GRN reconstruction using RNA- seq data, but current techniques are limited to single cell types and focus mainly on transcription factors. This restriction overlooks many potential CRISPR target genes, such as those encoding extracellular matrix components, growth factors, and signaling molecules, thus limiting the applicability of these models for CRISPR strategies. To address these limitations, we have developed CRISPR-GEM, a multi-layer perceptron (MLP)-based synthetic GRN constructed to accurately predict the downstream effects of CRISPR gene editing. First, input and output nodes are identified as differentially expressed genes between defined experimental and target cell/tissue types respectively. Then, MLP training learns regulatory relationships in a black-box approach allowing accurate prediction of output gene expression using only input gene expression. Finally, CRISPR-mimetic perturbations are made to each input gene individually and the resulting model predictions are compared to those for the target group to score and assess each input gene as a CRISPR candidate. The top scoring genes provided by CRISPR-GEM therefore best modulate experimental group GRNs to motivate transcriptomic shifts towards a target group phenotype. This machine learning model is the first of its kind for predicting optimal CRISPR target genes and serves as a powerful tool for enhanced CRISPR strategies across a range of cell therapies.
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Al-Saadi J, Waldén M, Sandell M, Sohlmér J, Grankvist R, Friberger I, Andersson A, Carlsten M, Chien K, Lundberg J, Witman N, Holmin S. Endovascular transplantation of mRNA-enhanced mesenchymal stromal cells results in superior therapeutic protein expression in swine heart. Mol Ther Methods Clin Dev 2024; 32:101225. [PMID: 38516693 PMCID: PMC10950887 DOI: 10.1016/j.omtm.2024.101225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 02/23/2024] [Indexed: 03/23/2024]
Abstract
Heart failure has a poor prognosis and no curative treatment exists. Clinical trials are investigating gene- and cell-based therapies to improve cardiac function. The safe and efficient delivery of these therapies to solid organs is challenging. Herein, we demonstrate the feasibility of using an endovascular intramyocardial delivery approach to safely administer mRNA drug products and perform cell transplantation procedures in swine. Using a trans-vessel wall (TW) device, we delivered chemically modified mRNAs (modRNA) and mRNA-enhanced mesenchymal stromal cells expressing vascular endothelial growth factor A (VEGF-A) directly to the heart. We monitored and mapped the cellular distribution, protein expression, and safety tolerability of such an approach. The delivery of modRNA-enhanced cells via the TW device with different flow rates and cell concentrations marginally affect cell viability and protein expression in situ. Implanted cells were found within the myocardium for at least 3 days following administration, without the use of immunomodulation and minimal impact on tissue integrity. Finally, we could increase the protein expression of VEGF-A over 500-fold in the heart using a cell-mediated modRNA delivery system compared with modRNA delivered in saline solution. Ultimately, this method paves the way for future research to pioneer new treatments for cardiac disease.
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Affiliation(s)
- Jonathan Al-Saadi
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
- Department of Neuroradiology, Karolinska University Hospital, 171 64 Stockholm, Sweden
- MedTechLabs, Stockholm, Sweden
| | - Mathias Waldén
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
| | - Mikael Sandell
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
- MedTechLabs, Stockholm, Sweden
- Division of Micro and Nanosystems, KTH Royal Institute of Technology, Malvinas väg 10, 114 28 Stockholm, Sweden
| | - Jesper Sohlmér
- Department of Cell and Molecular Biology, Karolinska Institute, Solnavägen 9, 171 65 Stockholm, Sweden
| | - Rikard Grankvist
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
| | - Ida Friberger
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
| | - Agneta Andersson
- Department of Medicine, Huddinge, Center for Hematology and Regenerative Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Mattias Carlsten
- Department of Medicine, Huddinge, Center for Hematology and Regenerative Medicine, Karolinska Institutet, Stockholm, Sweden
- Center for Cell Therapy and Allogeneic Stem Cell Transplantation, Karolinska Comprehensive Cancer Center, Karolinska University Hospital, Stockholm, Sweden
| | - Kenneth Chien
- Department of Cell and Molecular Biology, Karolinska Institute, Solnavägen 9, 171 65 Stockholm, Sweden
| | - Johan Lundberg
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
- Department of Neuroradiology, Karolinska University Hospital, 171 64 Stockholm, Sweden
- MedTechLabs, Stockholm, Sweden
| | - Nevin Witman
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
| | - Staffan Holmin
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
- Department of Neuroradiology, Karolinska University Hospital, 171 64 Stockholm, Sweden
- MedTechLabs, Stockholm, Sweden
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Christoffers S, Seiler L, Wiebe E, Blume C. Possibilities and efficiency of MSC co-transfection for gene therapy. Stem Cell Res Ther 2024; 15:150. [PMID: 38783353 PMCID: PMC11119386 DOI: 10.1186/s13287-024-03757-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 05/08/2024] [Indexed: 05/25/2024] Open
Abstract
Mesenchymal stem/stromal cells (MSCs) are not only capable of self-renewal, trans-differentiation, homing to damaged tissue sites and immunomodulation by secretion of trophic factors but are also easy to isolate and expand. Because of these characteristics, they are used in numerous clinical trials for cell therapy including immune and neurological disorders, diabetes, bone and cartilage diseases and myocardial infarction. However, not all trials have successful outcomes, due to unfavourable microenvironmental factors and the heterogenous nature of MSCs. Therefore, genetic manipulation of MSCs can increase their prospect. Currently, most studies focus on single transfection with one gene. Even though the introduction of more than one gene increases the complexity, it also increases the effectivity as different mechanism are triggered, leading to a synergistic effect. In this review we focus on the methodology and efficiency of co-transfection, as well as the opportunities and pitfalls of these genetically engineered cells for therapy.
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Affiliation(s)
- Sina Christoffers
- Institute for Technical Chemistry, Leibniz University Hannover, Callinstr. 3-5, 30167, Hannover, Germany.
- Cluster of Excellence Hearing4all, Hannover, Germany.
| | - Lisa Seiler
- Institute for Technical Chemistry, Leibniz University Hannover, Callinstr. 3-5, 30167, Hannover, Germany
| | - Elena Wiebe
- Institute for Technical Chemistry, Leibniz University Hannover, Callinstr. 3-5, 30167, Hannover, Germany
- Cluster of Excellence Hearing4all, Hannover, Germany
| | - Cornelia Blume
- Institute for Technical Chemistry, Leibniz University Hannover, Callinstr. 3-5, 30167, Hannover, Germany
- Cluster of Excellence Hearing4all, Hannover, Germany
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Gabashvili AN, Alexandrushkina NA, Mochalova EN, Goliusova DV, Sapozhnikova EN, Makarevich PI, Nikitin PI. Internalization of transferrin-tagged Myxococcus xanthus encapsulins into mesenchymal stem cells. Exp Biol Med (Maywood) 2024; 249:10055. [PMID: 38774281 PMCID: PMC11106444 DOI: 10.3389/ebm.2024.10055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 04/23/2024] [Indexed: 05/24/2024] Open
Abstract
Currently, various functionalized nanocarrier systems are extensively studied for targeted delivery of drugs, peptides, and nucleic acids. Joining the approaches of genetic and chemical engineering may produce novel carriers for precise targeting different cellular proteins, which is important for both therapy and diagnosis of various pathologies. Here we present the novel nanocontainers based on vectorized genetically encoded Myxococcus xanthus (Mx) encapsulin, confining a fluorescent photoactivatable mCherry (PAmCherry) protein. The shells of such encapsulins were modified using chemical conjugation of human transferrin (Tf) prelabeled with a fluorescein-6 (FAM) maleimide acting as a vector. We demonstrate that the vectorized encapsulin specifically binds to transferrin receptors (TfRs) on the membranes of mesenchymal stromal/stem cells (MSCs) followed by internalization into cells. Two spectrally separated fluorescent signals from Tf-FAM and PAmCherry are clearly distinguishable and co-localized. It is shown that Tf-tagged Mx encapsulins are internalized by MSCs much more efficiently than by fibroblasts. It has been also found that unlabeled Tf effectively competes with the conjugated Mx-Tf-FAM formulations. That indicates the conjugate internalization into cells by Tf-TfR endocytosis pathway. The developed nanoplatform can be used as an alternative to conventional nanocarriers for targeted delivery of, e.g., genetic material to MSCs.
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Affiliation(s)
- Anna N. Gabashvili
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
| | - Natalya A. Alexandrushkina
- Institute for Regenerative Medicine, Medical Research and Education Center, Lomonosov Moscow State University, Moscow, Russia
- Faculty of Medicine, Lomonosov Moscow State University, Moscow, Russia
| | - Elizaveta N. Mochalova
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
- Moscow Center for Advanced Studies, Moscow, Russia
- Nanobiomedicine Division, Sirius University of Science and Technology, Sirius, Russia
| | - Daria V. Goliusova
- Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, Moscow, Russia
- Laboratory of Cell Biology, Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of FMBA, Moscow, Russia
| | | | - Pavel I. Makarevich
- Institute for Regenerative Medicine, Medical Research and Education Center, Lomonosov Moscow State University, Moscow, Russia
- Faculty of Medicine, Lomonosov Moscow State University, Moscow, Russia
| | - Petr I. Nikitin
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
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Schwarz C, Göring J, Grüttner C, Hilger I. Intravenous Injection of PEI-Decorated Iron Oxide Nanoparticles Impacts NF-kappaB Protein Expression in Immunologically Stressed Mice. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:3166. [PMID: 38133063 PMCID: PMC10745731 DOI: 10.3390/nano13243166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/01/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023]
Abstract
Nanoparticle-based formulations are considered valuable tools for diagnostic and treatment purposes. The surface decoration of nanoparticles with polyethyleneimine (PEI) is often used to enhance their targeting and functional properties. Here, we aimed at addressing the long-term fate in vivo and the potential "off-target" effects of PEI decorated iron oxide nanoparticles (PEI-MNPs) in individuals with low-grade and persistent systemic inflammation. For this purpose, we synthesized PEI-MNPs (core-shell method, PEI coating under high pressure homogenization). Further on, we induced a low-grade and persistent inflammation in mice through regular subcutaneous injection of pathogen-associated molecular patterns (PAMPs, from zymosan). PEI-MNPs were injected intravenously. Up to 7 weeks thereafter, the blood parameters were determined via automated fluorescence flow cytometry, animals were euthanized, and the organs analyzed for iron contents (atomic absorption spectrometry) and for expression of NF-κB associated proteins (p65, IκBα, p105/50, p100/52, COX-2, Bcl-2, SDS-PAGE and Western blotting). We observed that the PEI-MNPs had a diameter of 136 nm and a zeta-potential 56.9 mV. After injection in mice, the blood parameters were modified and the iron levels were increased in different organs. Moreover, the liver of animals showed an increased protein expression of canonical NF-κB signaling pathway members early after PEI-MNP application, whereas at the later post-observation time, members of the non-canonical signaling pathway were prominent. We conclude that the synergistic effect between PEI-MNPs and the low-grade and persistent inflammatory state is mainly due to the hepatocytes sensing infection (PAMPs), to immune responses resulting from the intracellular metabolism of the uptaken PEI-MNPs, or to hepatocyte and immune cell communications. Therefore, we suggest a careful assessment of the safety and toxicity of PEI-MNP-based carriers for gene therapy, chemotherapy, and other medical applications not only in healthy individuals but also in those suffering from chronic inflammation.
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Affiliation(s)
- Claudia Schwarz
- Experimental Radiology, Institute of Diagnostic and Interventional Radiology, Jena University Hospital, Friedrich Schiller University Jena, Am Klinikum 1, D-07740 Jena, Germany; (C.S.); (J.G.)
| | - Julia Göring
- Experimental Radiology, Institute of Diagnostic and Interventional Radiology, Jena University Hospital, Friedrich Schiller University Jena, Am Klinikum 1, D-07740 Jena, Germany; (C.S.); (J.G.)
| | - Cordula Grüttner
- Micromod Partikeltechnologie GmbH, Schillingallee 68, D-18057 Rostock, Germany;
| | - Ingrid Hilger
- Micromod Partikeltechnologie GmbH, Schillingallee 68, D-18057 Rostock, Germany;
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Chen X, Liu B, Li C, Wang Y, Geng S, Du X, Weng J, Lai P. Stem cell-based therapy for COVID-19. Int Immunopharmacol 2023; 124:110890. [PMID: 37688914 DOI: 10.1016/j.intimp.2023.110890] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 08/24/2023] [Accepted: 08/30/2023] [Indexed: 09/11/2023]
Abstract
While The World Health Organization (WHO) has announced that COVID-19 is no longer a public health emergency of international concern(PHEIC), the risk of reinfection and new emerging variants still makes it crucial to study and work towards the prevention of COVID-19. Stem cell and stem cell-like derivatives have shown some promising results in clinical trials and preclinical studies as an alternative treatment option for the pulmonary illnesses caused by the COVID-19 and can be used as a potential vaccine. In this review, we will systematically summarize the pathophysiological process and potential mechanisms underlying stem cell-based therapy in COVID-19, and the registered COVID-19 clinical trials, and engineered extracellular vesicle as a potential vaccine for preventing COVID-19.
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Affiliation(s)
- Xiaomei Chen
- Department of Hematology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, PR China
| | - Bowen Liu
- Department of Hematology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, PR China
| | - Chao Li
- Department of Hematology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, PR China
| | - Yulian Wang
- Department of Hematology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, PR China
| | - Suxia Geng
- Department of Hematology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, PR China
| | - Xin Du
- Department of Hematology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, PR China
| | - Jianyu Weng
- Department of Hematology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, PR China
| | - Peilong Lai
- Department of Hematology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, PR China.
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Carballo-Pedrares N, López-Seijas J, Miranda-Balbuena D, Lamas I, Yáñez J, Rey-Rico A. Gene-activated hyaluronic acid-based cryogels for cartilage tissue engineering. J Control Release 2023; 362:606-619. [PMID: 37678437 DOI: 10.1016/j.jconrel.2023.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 07/28/2023] [Accepted: 09/03/2023] [Indexed: 09/09/2023]
Abstract
Articular cartilage injuries are very frequent lesions that if left untreated may degenerate into osteoarthritis. Gene transfer to mesenchymal stem cells (MSCs) provides a powerful approach to treat these lesions by promoting their chondrogenic differentiation into the appropriate cartilage phenotype. Non-viral vectors constitute the safest gene transfer tools, as they avoid important concerns of viral systems including immunogenicity and insertional mutagenesis. However, non-viral gene transfer usually led to lower transfection efficiencies when compared with their viral counterparts. Biomaterial-guided gene delivery has emerged as a promising alternative to increase non-viral gene transfer efficiency by achieving sustained delivery of the candidate gene into cellular microenvironment. In the present study, we designed hyaluronic acid-based gene-activated cryogels (HACGs) encapsulating a novel formulation of non-viral vectors based on niosomes (P80PX) to promote MSCs in situ transfection. The developed HACG P80PX systems showed suitable physicochemical properties to promote MSCs in situ transfection with very low cytotoxicity. Incorporation of a plasmid encoding for the transcription factor SOX9 (psox9) into HACG P80PX systems led to an effective MSCs chondrogenic differentiation with reduced expression of fibrocartilage and hypertrophic markers. The capacity of the developed systems to restore cartilage extracellular matrix was further confirmed in an ex vivo model of chondral defect.
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Affiliation(s)
- Natalia Carballo-Pedrares
- Gene & Cell Therapy Unit (G-CEL), Centro Interdisciplinar de Química e Bioloxía - CICA, Universidade da Coruña, As Carballeiras, s/n. Campus de Elviña, 15071 A Coruña, Spain
| | - Junquera López-Seijas
- Gene & Cell Therapy Unit (G-CEL), Centro Interdisciplinar de Química e Bioloxía - CICA, Universidade da Coruña, As Carballeiras, s/n. Campus de Elviña, 15071 A Coruña, Spain; Department of Biology, Facultade de Ciencias, Universidade da Coruña, Coruña, Spain
| | - Diego Miranda-Balbuena
- Gene & Cell Therapy Unit (G-CEL), Centro Interdisciplinar de Química e Bioloxía - CICA, Universidade da Coruña, As Carballeiras, s/n. Campus de Elviña, 15071 A Coruña, Spain
| | - Ibán Lamas
- Department of Biology, Facultade de Ciencias, Universidade da Coruña, Coruña, Spain
| | - Julián Yáñez
- Department of Biology, Facultade de Ciencias, Universidade da Coruña, Coruña, Spain
| | - Ana Rey-Rico
- Gene & Cell Therapy Unit (G-CEL), Centro Interdisciplinar de Química e Bioloxía - CICA, Universidade da Coruña, As Carballeiras, s/n. Campus de Elviña, 15071 A Coruña, Spain; Department of Biology, Facultade de Ciencias, Universidade da Coruña, Coruña, Spain.
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Carballo-Pedrares N, Ponti F, Lopez-Seijas J, Miranda-Balbuena D, Bono N, Candiani G, Rey-Rico A. Non-viral gene delivery to human mesenchymal stem cells: a practical guide towards cell engineering. J Biol Eng 2023; 17:49. [PMID: 37491322 PMCID: PMC10369726 DOI: 10.1186/s13036-023-00363-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 06/27/2023] [Indexed: 07/27/2023] Open
Abstract
In recent decades, human mesenchymal stem cells (hMSCs) have gained momentum in the field of cell therapy for treating cartilage and bone injuries. Despite the tri-lineage multipotency, proliferative properties, and potent immunomodulatory effects of hMSCs, their clinical potential is hindered by donor variations, limiting their use in medical settings. To address this challenge, gene delivery technologies have emerged as a promising approach to modulate the phenotype and commitment of hMSCs towards specific cell lineages, thereby enhancing osteochondral repair strategies. This review provides a comprehensive overview of current non-viral gene delivery approaches used to engineer MSCs, highlighting key factors such as the choice of nucleic acid or delivery vector, transfection strategies, and experimental parameters. Additionally, it outlines various protocols and methods for qualitative and quantitative evaluation of their therapeutic potential as a delivery system in osteochondral regenerative applications. In summary, this technical review offers a practical guide for optimizing non-viral systems in osteochondral regenerative approaches. hMSCs constitute a key target population for gene therapy techniques. Nevertheless, there is a long way to go for their translation into clinical treatments. In this review, we remind the most relevant transfection conditions to be optimized, such as the type of nucleic acid or delivery vector, the transfection strategy, and the experimental parameters to accurately evaluate a delivery system. This survey provides a practical guide to optimizing non-viral systems for osteochondral regenerative approaches.
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Affiliation(s)
- Natalia Carballo-Pedrares
- Gene & Cell Therapy Research Group (G-CEL). Centro Interdisciplinar de Química y Biología - CICA, Universidade da Coruña, As Carballeiras, S/N. Campus de Elviña, 15071 A, Coruña, Spain
| | - Federica Ponti
- genT_LΛB, Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico Di Milano, 20131, Milan, Italy
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair I in Biomaterials and Bioengineering for the Innovation in Surgery, Department of Min-Met-Materials Engineering & Research Center of CHU de Quebec, Division of Regenerative Medicine, Laval University, Quebec City, QC, Canada
| | - Junquera Lopez-Seijas
- Gene & Cell Therapy Research Group (G-CEL). Centro Interdisciplinar de Química y Biología - CICA, Universidade da Coruña, As Carballeiras, S/N. Campus de Elviña, 15071 A, Coruña, Spain
| | - Diego Miranda-Balbuena
- Gene & Cell Therapy Research Group (G-CEL). Centro Interdisciplinar de Química y Biología - CICA, Universidade da Coruña, As Carballeiras, S/N. Campus de Elviña, 15071 A, Coruña, Spain
| | - Nina Bono
- genT_LΛB, Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico Di Milano, 20131, Milan, Italy
| | - Gabriele Candiani
- genT_LΛB, Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico Di Milano, 20131, Milan, Italy.
| | - Ana Rey-Rico
- Gene & Cell Therapy Research Group (G-CEL). Centro Interdisciplinar de Química y Biología - CICA, Universidade da Coruña, As Carballeiras, S/N. Campus de Elviña, 15071 A, Coruña, Spain.
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Shtykalova S, Deviatkin D, Freund S, Egorova A, Kiselev A. Non-Viral Carriers for Nucleic Acids Delivery: Fundamentals and Current Applications. Life (Basel) 2023; 13:903. [PMID: 37109432 PMCID: PMC10142071 DOI: 10.3390/life13040903] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/21/2023] [Accepted: 03/24/2023] [Indexed: 03/31/2023] Open
Abstract
Over the past decades, non-viral DNA and RNA delivery systems have been intensively studied as an alternative to viral vectors. Despite the most significant advantage over viruses, such as the lack of immunogenicity and cytotoxicity, the widespread use of non-viral carriers in clinical practice is still limited due to the insufficient efficacy associated with the difficulties of overcoming extracellular and intracellular barriers. Overcoming barriers by non-viral carriers is facilitated by their chemical structure, surface charge, as well as developed modifications. Currently, there are many different forms of non-viral carriers for various applications. This review aimed to summarize recent developments based on the essential requirements for non-viral carriers for gene therapy.
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Affiliation(s)
- Sofia Shtykalova
- Department of Genomic Medicine, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleevskaya Line 3, 199034 Saint-Petersburg, Russia
- Faculty of Biology, Saint-Petersburg State University, Universitetskaya Embankment 7-9, 199034 Saint-Petersburg, Russia
| | - Dmitriy Deviatkin
- Department of Genomic Medicine, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleevskaya Line 3, 199034 Saint-Petersburg, Russia
- Faculty of Biology, Saint-Petersburg State University, Universitetskaya Embankment 7-9, 199034 Saint-Petersburg, Russia
| | - Svetlana Freund
- Department of Genomic Medicine, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleevskaya Line 3, 199034 Saint-Petersburg, Russia
- Faculty of Biology, Saint-Petersburg State University, Universitetskaya Embankment 7-9, 199034 Saint-Petersburg, Russia
| | - Anna Egorova
- Department of Genomic Medicine, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleevskaya Line 3, 199034 Saint-Petersburg, Russia
| | - Anton Kiselev
- Department of Genomic Medicine, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleevskaya Line 3, 199034 Saint-Petersburg, Russia
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10
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Immune microenvironment: novel perspectives on bone regeneration disorder in osteoradionecrosis of the jaws. Cell Tissue Res 2023; 392:413-430. [PMID: 36737519 DOI: 10.1007/s00441-023-03743-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 01/18/2023] [Indexed: 02/05/2023]
Abstract
Osteoradionecrosis of the jaws (ORNJ) is a severe complication that occurs after radiotherapy of head and neck malignancies. Clinically, conservative treatments and surgeries for ORNJ exhibited certain therapeutic effects, whereas the regenerative disorder of the post-radiation jaw remains a pending problem to be solved. In recent years, the recognition of the role of the immune microenvironment has led to a shift from an osteoblasts (OBs) or bone marrow mesenchymal stromal cells (BMSCs)-centered view of bone regeneration to the concept of a complicated microecosystem that supports bone regeneration. Current advances in osteoimmunology have uncovered novel targets within the immune microenvironment to help improve various regeneration therapies, notably therapies potentiating the interaction between BMSCs and immune cells. However, these researches lack a thorough understanding of the immune microenvironment and the interaction network of immune cells in the course of bone regeneration, especially for the post-operative defect of ORNJ. This review summarized the composition of the immune microenvironment during bone regeneration, how the immune microenvironment interacts with the skeletal system, and discussed existing and potential strategies aimed at targeting cellular and molecular immune microenvironment components.
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11
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Hamann A, Pannier AK. Innovative nonviral gene delivery strategies for engineering human mesenchymal stem cell phenotypes toward clinical applications. Curr Opin Biotechnol 2022; 78:102819. [PMID: 36274497 DOI: 10.1016/j.copbio.2022.102819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 09/13/2022] [Accepted: 09/15/2022] [Indexed: 12/14/2022]
Abstract
Although human mesenchymal stem cells (hMSCs) have been used in many clinical trials, variable outcomes have resulted in no FDA-approved hMSC treatment. However, research into developing hMSC therapies for many diseases continues. An approach to manipulate hMSCs for therapeutic applications is gene delivery. Nonviral gene delivery is safer and more flexible than viral vectors, but much less efficient, especially in hMSCs. It is not understood why hMSCs are more difficult to transfect than cell lines, but innate features of hMSCs may present unique barriers to transfection. Recently, strategies to improve hMSC transfection have been developed by innovating nanocarriers, nucleic acid cargos, and by 'priming' hMSCs chemically and physically for more efficient transfection. These strategies aim to engineer hMSCs with new phenotypes mediated by transgenic secreted factors, receptors, transcription factors, and genome editing systems for clinical applications requiring enhanced immunomodulation and/or tissue regeneration, or for functions such as tumor-killing and tissue engineering.
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Affiliation(s)
- Andrew Hamann
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Angela K Pannier
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA.
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12
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He S, Fang J, Zhong C, Wang M, Ren F. Spatiotemporal Delivery of pBMP2 and pVEGF by a Core-Sheath Structured Fiber-Hydrogel Gene-Activated Matrix Loaded with Peptide-Modified Nanoparticles for Critical-Sized Bone Defect Repair. Adv Healthc Mater 2022; 11:e2201096. [PMID: 35971854 DOI: 10.1002/adhm.202201096] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 07/19/2022] [Indexed: 01/28/2023]
Abstract
The clinical translation of bioactive scaffolds for the treatment of large segmental bone defects remains a grand challenge. The gene-activated matrix (GAM) combining gene therapy and tissue engineering scaffold offers a promising strategy for the restoration of structure and function of damaged or dysfunctional tissues. Herein, a gene-activated biomimetic composite scaffold consisting of an electrospun poly(ε-caprolactone) fiber sheath and an alginate hydrogel core which carried plasmid DNA encoding bone morphogenetic protein 2 (pBMP2) and vascular endothelial growth factor (pVEGF), respectively, is developed. A peptide-modified polymeric nanocarrier with low cytotoxicity and high efficiency serves as the nonviral DNA delivery vector. The obtained GAM allows spatiotemporal release of pVEGF and pBMP2 and promotes osteogenic differentiation of preosteoblasts in vitro. In vivo evaluation using a critical-sized segmental femoral defect model in rats shows that the dual gene delivery system can significantly accelerate bone healing by activating angiogenesis and osteogenesis. These findings demonstrate the effectiveness of the developed dual gene-activated core-sheath structured fiber-hydrogel composite scaffold for critical-sized bone defect regeneration and the potential of cell-free scaffold-based gene therapy for tissue engineering.
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Affiliation(s)
- Shan He
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China.,Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - Ju Fang
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Chuanxin Zhong
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Min Wang
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - Fuzeng Ren
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
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13
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Pan Z, Sun W, Chen Y, Tang H, Lin W, Chen J, Chen C. Extracellular Vesicles in Tissue Engineering: Biology and Engineered Strategy. Adv Healthc Mater 2022; 11:e2201384. [PMID: 36053562 DOI: 10.1002/adhm.202201384] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/07/2022] [Indexed: 01/28/2023]
Abstract
Extracellular vesicles (EVs), acting as an important ingredient of intercellular communication through paracrine actions, have gained tremendous attention in the field of tissue engineering (TE). Moreover, these nanosized extracellular particles (30-140 nm) can be incorporated into biomaterials according to different principles to facilitate signal delivery in various regenerative processes directly or indirectly. Bioactive biomaterials as the carrier will extend the retention time and realize the controlled release of EVs, which further enhance their therapeutic efficiency in tissue regeneration. Herein, the basic biological characteristics of EVs are first introduced, and then their outstanding performance in exerting direct impacts on target cells in tissue regeneration as well as indirect effects on promoting angiogenesis and regulating the immune environment, due to specific functional components of EVs (nucleic acid, protein, lipid, etc.), is emphasized. Furthermore, different design ideas for suitable EV-loaded biomaterials are also demonstrated. In the end, this review also highlights the engineered strategies, which aim at solving the problems related to natural EVs such as highly heterogeneous functions, inadequate tissue targeting capabilities, insufficient yield and scalability, etc., thus promoting the therapeutic pertinence and clinical potential of EV-based approaches in TE.
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Affiliation(s)
- Ziyin Pan
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School Of Medicine, Shanghai, 200092, China.,Shanghai Engineering Research Center of Lung Transplantation, Shanghai, 200433, China
| | - Weiyan Sun
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School Of Medicine, Shanghai, 200092, China.,Shanghai Engineering Research Center of Lung Transplantation, Shanghai, 200433, China
| | - Yi Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School Of Medicine, Shanghai, 200092, China.,Shanghai Engineering Research Center of Lung Transplantation, Shanghai, 200433, China
| | - Hai Tang
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School Of Medicine, Shanghai, 200092, China.,Shanghai Engineering Research Center of Lung Transplantation, Shanghai, 200433, China
| | - Weikang Lin
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School Of Medicine, Shanghai, 200092, China.,Shanghai Engineering Research Center of Lung Transplantation, Shanghai, 200433, China
| | - Jiafei Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School Of Medicine, Shanghai, 200092, China
| | - Chang Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School Of Medicine, Shanghai, 200092, China.,Shanghai Engineering Research Center of Lung Transplantation, Shanghai, 200433, China
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14
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Advances in Biomaterial-Mediated Gene Therapy for Articular Cartilage Repair. Bioengineering (Basel) 2022; 9:bioengineering9100502. [PMID: 36290470 PMCID: PMC9598732 DOI: 10.3390/bioengineering9100502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/16/2022] [Accepted: 09/19/2022] [Indexed: 11/16/2022] Open
Abstract
Articular cartilage defects caused by various reasons are relatively common in clinical practice, but the lack of efficient therapeutic methods remains a substantial challenge due to limitations in the chondrocytes’ repair abilities. In the search for scientific cartilage repair methods, gene therapy appears to be more effective and promising, especially with acellular biomaterial-assisted procedures. Biomaterial-mediated gene therapy has mainly been divided into non-viral vector and viral vector strategies, where the controlled delivery of gene vectors is contained using biocompatible materials. This review will introduce the common clinical methods of cartilage repair used, the strategies of gene therapy for cartilage injuries, and the latest progress.
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15
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Abpeikar Z, Alizadeh AA, Ahmadyousefi Y, Najafi AA, Safaei M. Engineered cells along with smart scaffolds: critical factors for improving tissue engineering approaches. Regen Med 2022; 17:855-876. [PMID: 36065834 DOI: 10.2217/rme-2022-0059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this review, gene delivery and its applications are discussed in tissue engineering (TE); also, new techniques such as the CRISPR-Cas9 system, synthetics biology and molecular dynamics simulation to improve the efficiency of the scaffolds have been studied. CRISPR-Cas9 is expected to make significant advances in TE in the future. The fundamentals of synthetic biology have developed powerful and flexible methods for programming cells via artificial genetic circuits. The combination of regenerative medicine and artificial biology allows the engineering of cells and organisms for use in TE, biomaterials, bioprocessing and scaffold development. The dynamics of protein adsorption at the scaffold surface at the atomic level can provide valuable guidelines for the future design of TE scaffolds /implants.
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Affiliation(s)
- Zahra Abpeikar
- Department of Tissue Engineering & Applied Cell Sciences, School of Advance Medical Science & Technology, Shiraz University of Medical Sciences, Shiraz, 7133654361, Iran
| | - Ali Akbar Alizadeh
- Department of Tissue Engineering & Applied Cell Sciences, School of Advance Medical Science & Technology, Shiraz University of Medical Sciences, Shiraz, 7133654361, Iran
| | - Yaghoub Ahmadyousefi
- Research Center for Molecular Medicine, School of Medicine, Hamadan University of Medical Sciences, Hamadan, 6517838687, Iran
| | - Ali Akbar Najafi
- Student Research Committee, Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, 7919693116, Iran
| | - Mohsen Safaei
- Department of Medical Biotechnology, School of Advanced Technologies, Shahrekord University of Medical Sciences, Shahrekord, 8815713471, Iran
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16
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Dick TA, Sone ED, Uludağ H. Mineralized vectors for gene therapy. Acta Biomater 2022; 147:1-33. [PMID: 35643193 DOI: 10.1016/j.actbio.2022.05.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 05/18/2022] [Accepted: 05/19/2022] [Indexed: 11/01/2022]
Abstract
There is an intense interest in developing materials for safe and effective delivery of polynucleotides using non-viral vectors. Mineralization of organic templates has long been used to produce complex materials with outstanding biocompatibility. However, a lack of control over mineral growth has limited the applicability of mineralized materials to a few in vitro applications. With better control over mineral growth and surface functionalization, mineralized vectors have advanced significantly in recent years. Here, we review the recent progress in chemical synthesis, physicochemical properties, and applications of mineralized materials in gene therapy, focusing on structure-function relationships. We contrast the classical understanding of the mineralization mechanism with recent ideas of mineralization. A brief introduction to gene delivery is summarized, followed by a detailed survey of current mineralized vectors. The vectors derived from calcium phosphate are articulated and compared to other minerals with unique features. Advanced mineral vectors derived from templated mineralization and specialty coatings are critically analyzed. Mineral systems beyond the co-precipitation are explored as more complex multicomponent systems. Finally, we conclude with a perspective on the future of mineralized vectors by carefully demarcating the boundaries of our knowledge and highlighting ambiguous areas in mineralized vectors. STATEMENT OF SIGNIFICANCE: Therapy by gene-based medicines is increasingly utilized to cure diseases that are not alleviated by conventional drug therapy. Gene medicines, however, rely on macromolecular nucleic acids that are too large and too hydrophilic for cellular uptake. Without tailored materials, they are not functional for therapy. One emerging class of nucleic acid delivery system is mineral-based materials. The fact that they can undergo controlled dissolution with minimal footprint in biological systems are making them attractive for clinical use, where safety is utmost importance. In this submission, we will review the emerging synthesis technology and the range of new generation minerals for use in gene medicines.
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17
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He S, Fang J, Zhong C, Ren F, Wang M. Controlled pVEGF delivery via a gene-activated matrix comprised of a peptide-modified non-viral vector and a nanofibrous scaffold for skin wound healing. Acta Biomater 2022; 140:149-162. [PMID: 34852301 DOI: 10.1016/j.actbio.2021.11.037] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 01/23/2023]
Abstract
Regulating cell function and tissue formation by combining gene delivery with functional scaffolds to create gene-activated matrices (GAMs) is a promising strategy for tissue engineering. However, fabrication of GAMs with low cytotoxicity, high transfection efficiency, and long-term gene delivery properties remains a challenge. In this study, a non-viral DNA delivery nanocomplex was developed by modifying poly (D, L-lactic-co-glycolic acid)/polyethylenimine (PLGA/PEI) nanoparticles with the cell-penetrating peptide KALA. Subsequently, the nanocomplex carrying plasmid DNA encoding vascular endothelial growth factor (pVEGF) was immobilized onto a polydopamine-coated electrospun alginate nanofibrous scaffold, resulting in a GAM for enhanced skin wound healing. The nanocomplex exhibited much lower cytotoxicity and comparable or even higher transfection efficiency compared with PEI. The GAM enabled sustained gene release and long-tern transgene expression of VEGF in vitro. In an excisional full-thickness skin wound rat model, the GAM could accelerate wound closure, promote complete re-epithelization, reduce inflammatory response, and enhance neovascularization, ultimately enhancing skin wound healing. The current GAM comprising a low-toxic gene delivery nanocomplex and a biocompatible 3D nanofibrous scaffold demonstrates great potential for mediating long-term cell functions and may become a powerful tool for gene delivery in tissue engineering. STATEMENT OF SIGNIFICANCE: Gene delivery is a promising strategy in promoting tissue regeneration as an effective alternative to growth factor delivery, but the study on three-dimensional gene-activated scaffolds remains in its infancy. Herein, a biodegradable nanofibrous gene-activated matrix integrating non-viral nanoparticle vector was designed and evaluated both in vitro and in vivo. The results show that the nanoparticle vector provided high transfection efficiency with minimal cytotoxicity. After surface immobilization of the nanocomplexes carrying plasmid DNA encoding vascular endothelial growth factor (pVEGF), the nanofibrous scaffold enabled sustained DNA release and long-term transgene expression in vitro. In a rat full-thickness skin wound model, the scaffold could accelerate wound healing. This innovative gene-activated matrix can be a promising candidate for tissue regeneration.
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18
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Genetic Modification of Mesenchymal Stem Cells for Neurological Disease Therapy: What Effects Does it Have on Phenotype/Cell Behavior, Determining Their Effectiveness? Mol Diagn Ther 2021; 24:683-702. [PMID: 32926348 DOI: 10.1007/s40291-020-00491-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Mesenchymal stem cells are a promising tool in regenerative medicine, and their functions can be enhanced through genetic modification. Recent advances in genetic engineering provide several methods that enable gene delivery to mesenchymal stem cells. However, it remains to be decided whether genetic modification of mesenchymal stem cells by vectors carrying reporter or therapeutic genes leads to adverse effects on morphology, phenotypic profiles, and viability of transplanted cells. In this regard, we focus on the description of genetic modification methods of mesenchymal stem cells, their effectiveness, and the impact on phenotype/cell behavior/proliferation and the differentiation ability of these cells in vitro and in vivo. Furthermore, we compare the main effects of genetically modified mesenchymal stem cells with native mesenchymal stem cells when applied in the therapy of neurological diseases.
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19
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Zhuang Y, Cui W. Biomaterial-based delivery of nucleic acids for tissue regeneration. Adv Drug Deliv Rev 2021; 176:113885. [PMID: 34324886 DOI: 10.1016/j.addr.2021.113885] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 07/13/2021] [Accepted: 07/16/2021] [Indexed: 12/13/2022]
Abstract
Gene therapy is a promising novel method of tissue regeneration by stimulating or inhibiting key signaling pathways. However, their therapeutic applications in vivo are largely limited by several physiological obstacles, such as degradation of nucleases, impermeability of cell membranes, and transport to the desired intracellular compartments. Biomaterial-based gene delivery systems can overcome the problems of stability and local drug delivery, and can temporarily control the overexpression of therapeutic genes, leading to the local production of physiologically relevant levels of regulatory factors. But the gene delivery of biomaterials for tissue regeneration relies on multi-factor design. This review aims to outline the impact of gene delivery methods, therapeutic genes and biomaterials selection on this strategy, emphatically introduce the latest developments in the design of gene delivery vehicles based on biomaterials, summarize the mechanism of nucleic acid for tissue regeneration, and explore the strategies of nucleic acid delivery vehicles for various tissue regeneration.
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Affiliation(s)
- Yaping Zhuang
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention, Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, PR China
| | - Wenguo Cui
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention, Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, PR China.
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20
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Walsh DP, Raftery RM, Murphy R, Chen G, Heise A, O'Brien FJ, Cryan SA. Gene activated scaffolds incorporating star-shaped polypeptide-pDNA nanomedicines accelerate bone tissue regeneration in vivo. Biomater Sci 2021; 9:4984-4999. [PMID: 34086016 DOI: 10.1039/d1bm00094b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Increasingly, tissue engineering strategies such as the use of biomaterial scaffolds augmented with specific biological cues are being investigated to accelerate the regenerative process. For example, significant clinical challenges still exist in efficiently healing large bone defects which are above a critical size. Herein, we describe a cell-free, biocompatible and bioresorbable scaffold incorporating a novel star-polypeptide biomaterial as a gene vector. This gene-loaded scaffold can accelerate bone tissue repair in vivo in comparison to a scaffold alone at just four weeks post implantation in a critical sized bone defect. This is achieved via the in situ transfection of autologous host cells which migrate into the implanted collagen-based scaffold via gene-loaded, star-shaped poly(l-lysine) polypeptides (star-PLLs). In vitro, we demonstrate that star-PLL nanomaterials designed with 64 short poly(l-lysine) arms can be used to functionalise a range of collagen based scaffolds with a dual therapeutic cargo (pDual) of the bone-morphogenetic protein-2 plasmid (pBMP-2) and vascular endothelial growth factor plasmid (pVEGF). The versatility of this polymeric vector is highlighted in its ability to transfect Mesenchymal Stem Cells (MSCs) with both osteogenic and angiogenic transgenes in a 3D environment from a range of scaffolds with various macromolecular compositions. In vivo, we demonstrate that a bone-mimetic, collagen-hydroxyapatite scaffold functionalized with star-PLLs containing either 32- or 64- poly(l-lysine) arms can be used to successfully deliver this pDual cargo to autologous host cells. At the very early timepoint of just 4 weeks, we demonstrate the 64-star-PLL-pDual functionalised scaffold as a particularly efficient platform to accelerate bone tissue regeneration, with a 6-fold increase in new bone formation compared to a scaffold alone. Overall, this article describes for the first time the incorporation of novel star-polypeptide biomaterials carrying two therapeutic genes into a cell free scaffold which supports accelerated bone tissue formation in vivo.
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Affiliation(s)
- David P Walsh
- Drug Delivery & Advanced Materials Team, School of Pharmacy & Biomolecular Sciences, RCSI, Dublin, Ireland and Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, RCSI, Dublin, Ireland and Trinity Centre for Biomedical Engineering, Trinity College Dublin (TCD), Dublin, Ireland and SFI Advanced Materials and Bioengineering Research (AMBER) Centre, RCSI & TCD, Ireland
| | - Rosanne M Raftery
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, RCSI, Dublin, Ireland and Trinity Centre for Biomedical Engineering, Trinity College Dublin (TCD), Dublin, Ireland and SFI Advanced Materials and Bioengineering Research (AMBER) Centre, RCSI & TCD, Ireland
| | | | - Gang Chen
- Centre for the Study of Neurological Disorders, Microsurgical Research and Training Facility (MRTF), RCSI, Dublin, Ireland
| | - Andreas Heise
- SFI Advanced Materials and Bioengineering Research (AMBER) Centre, RCSI & TCD, Ireland and Department of Chemistry, RCSI, Dublin, Ireland and SFI Centre for Research in Medical Devices (CURAM), RCSI, Dublin and National University of Ireland, Galway, Ireland
| | - Fergal J O'Brien
- Drug Delivery & Advanced Materials Team, School of Pharmacy & Biomolecular Sciences, RCSI, Dublin, Ireland and Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, RCSI, Dublin, Ireland and Trinity Centre for Biomedical Engineering, Trinity College Dublin (TCD), Dublin, Ireland and SFI Advanced Materials and Bioengineering Research (AMBER) Centre, RCSI & TCD, Ireland and SFI Centre for Research in Medical Devices (CURAM), RCSI, Dublin and National University of Ireland, Galway, Ireland
| | - Sally-Ann Cryan
- Drug Delivery & Advanced Materials Team, School of Pharmacy & Biomolecular Sciences, RCSI, Dublin, Ireland and Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, RCSI, Dublin, Ireland and Trinity Centre for Biomedical Engineering, Trinity College Dublin (TCD), Dublin, Ireland and SFI Centre for Research in Medical Devices (CURAM), RCSI, Dublin and National University of Ireland, Galway, Ireland
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21
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Graceffa V. Physical and mechanical cues affecting biomaterial-mediated plasmid DNA delivery: insights into non-viral delivery systems. J Genet Eng Biotechnol 2021; 19:90. [PMID: 34142237 PMCID: PMC8211807 DOI: 10.1186/s43141-021-00194-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 06/09/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Whilst traditional strategies to increase transfection efficiency of non-viral systems aimed at modifying the vector or the polyplexes/lipoplexes, biomaterial-mediated gene delivery has recently sparked increased interest. This review aims at discussing biomaterial properties and unravelling underlying mechanisms of action, for biomaterial-mediated gene delivery. DNA internalisation and cytoplasmic transport are initially discussed. DNA immobilisation, encapsulation and surface-mediated gene delivery (SMD), the role of extracellular matrix (ECM) and topographical cues, biomaterial stiffness and mechanical stimulation are finally outlined. MAIN TEXT Endocytic pathways and mechanisms to escape the lysosomal network are highly variable. They depend on cell and DNA complex types but can be diverted using appropriate biomaterials. 3D scaffolds are generally fabricated via DNA immobilisation or encapsulation. Degradation rate and interaction with the vector affect temporal patterns of DNA release and transgene expression. In SMD, DNA is instead coated on 2D surfaces. SMD allows the incorporation of topographical cues, which, by inducing cytoskeletal re-arrangements, modulate DNA endocytosis. Incorporation of ECM mimetics allows cell type-specific transfection, whereas in spite of discordances in terms of optimal loading regimens, it is recognised that mechanical loading facilitates gene transfection. Finally, stiffer 2D substrates enhance DNA internalisation, whereas in 3D scaffolds, the role of stiffness is still dubious. CONCLUSION Although it is recognised that biomaterials allow the creation of tailored non-viral gene delivery systems, there still are many outstanding questions. A better characterisation of endocytic pathways would allow the diversion of cell adhesion processes and cytoskeletal dynamics, in order to increase cellular transfection. Further research on optimal biomaterial mechanical properties, cell ligand density and loading regimens is limited by the fact that such parameters influence a plethora of other different processes (e.g. cellular adhesion, spreading, migration, infiltration, and proliferation, DNA diffusion and release) which may in turn modulate gene delivery. Only a better understanding of these processes may allow the creation of novel robust engineered systems, potentially opening up a whole new area of biomaterial-guided gene delivery for non-viral systems.
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Affiliation(s)
- Valeria Graceffa
- Cellular Health and Toxicology Research Group (CHAT), Institute of Technology Sligo, Ash Ln, Bellanode, Sligo, Ireland.
- Department of Life Sciences, Institute of Technology Sligo, Ash Ln, Bellanode, Sligo, Ireland.
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22
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Guan Z, Chen S, Pan F, Fan L, Sun D. Effects of Gene Delivery Approaches on Differentiation Potential and Gene Function of Mesenchymal Stem Cells. IEEE Trans Biomed Eng 2021; 69:83-95. [PMID: 34101578 DOI: 10.1109/tbme.2021.3087129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Introduction of a gene to mesenchymal stem cells (MSCs) is a well-known strategy to purposely manipulate the cell fate and further enhance therapeutic performance in cell-based therapy. Viral and chemical approaches for gene delivery interfere with differentiation potential. Although microinjection as a physical delivery method is commonly used for transfection, its influence on MSC cell fate is not fully understood. The current study aimed to evaluate the effects of four nonviral gene delivery methods on stem cell multi-potency. The four delivery methods are robotic microinjection, polyethylenimine (PEI), cationic liposome (cLipo), and calcium phosphate nanoparticles (CaP). Among the four methods, microinjection has exhibited the highest transfection efficiency of ~60%, while the three others showed lower efficiency of 10-25%. Robotic microinjection preserved fibroblast-like cell morphology, stress fibre intactness, and mature focal adhesion complex, while PEI caused severe cytotoxicity. No marked differentiation bias was observed after microinjection and cLipo treatment. By contrast, CaP-treated MSCs exhibited excessive osteogenesis, while PEI-treated MSCs showed excessive adipogenesis. Robotic microinjection system was used to inject the CRISPR/Cas9-encoding plasmid to knock out PPAR gene in MSCs, and the robotic microinjection did not interfere with PPAR function in differentiation commitment. Meanwhile, the bias in osteo-adipogenic differentiation exhibited in CaP and PEI-treated MSCs after PPAR knockout via chemical carriers. Our results indicate that gene delivery vehicles variously disturb MSCs differentiation and interfere with exogenous gene function. Our findings further suggest that robotic microinjection offers a promise of generating genetically modified MSCs without disrupting stem cell multi-potency and therapeutic gene function.
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23
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Cai J, Qi H, Yao K, Yao Y, Jing D, Liao W, Zhao Z. Non-Coding RNAs Steering the Senescence-Related Progress, Properties, and Application of Mesenchymal Stem Cells. Front Cell Dev Biol 2021; 9:650431. [PMID: 33816501 PMCID: PMC8017203 DOI: 10.3389/fcell.2021.650431] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 02/12/2021] [Indexed: 02/05/2023] Open
Abstract
The thirst to postpone and even reverse aging progress has never been quenched after all these decades. Unequivocally, mesenchymal stem cells (MSCs), with extraordinary abilities such as self-renewal and multi-directional differentiation, deserve the limelight in this topic. Though having several affable clinical traits, MSCs going through senescence would, on one hand, contribute to age-related diseases and, on the other hand, lead to compromised or even counterproductive therapeutical outcomes. Notably, increasing evidence suggests that non-coding RNAs (ncRNAs) could invigorate various regulatory processes. With even a slight dip or an uptick of expression, ncRNAs would make a dent in or even overturn cellular fate. Thereby, a systematic illustration of ncRNAs identified so far to steer MSCs during senescence is axiomatically an urgent need. In this review, we introduce the general properties and mechanisms of senescence and its relationship with MSCs and illustrate the ncRNAs playing a role in the cellular senescence of MSCs. It is then followed by the elucidation of ncRNAs embodied in extracellular vesicles connecting senescent MSCs with other cells and diversified processes in and beyond the skeletal system. Last, we provide a glimpse into the clinical methodologies of ncRNA-based therapies in MSC-related fields. Hopefully, the intricate relationship between senescence and MSCs will be revealed one day and our work could be a crucial stepping-stone toward that future.
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Affiliation(s)
- Jingyi Cai
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hexu Qi
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ke Yao
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yang Yao
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Dian Jing
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Wen Liao
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Orthodontics, Osaka Dental University, Hirakata, Japan
| | - Zhihe Zhao
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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24
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Su Y, Zhang T, Huang T, Gao J. Current advances and challenges of mesenchymal stem cells-based drug delivery system and their improvements. Int J Pharm 2021; 600:120477. [PMID: 33737099 DOI: 10.1016/j.ijpharm.2021.120477] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 03/03/2021] [Accepted: 03/07/2021] [Indexed: 12/12/2022]
Abstract
Mesenchymal stem cells (MSCs) have recently emerged as a promising living carrier for targeted drug delivery. A wealth of literature has shown evidence for great advances in MSCs-based drug delivery system (MSCs-DDS) in the treatment of various diseases. Nevertheless, as this field of study rapidly advances, several challenges associated with this delivery strategy have arisen, mainly due to the inherent limitations of MSCs. To this end, several novel technologies are being developed in parallel to improve the efficiency or safety of this system. In this review, we introduce recent advances and summarize the present challenges of MSCs-DDS. We also highlight some potential technologies to improve MSCs-DDS, including nanotechnology, genome engineering technology, and biomimetic technology. Finally, prospects for application of artificially improved MSCs-DDS are addressed. The technologies summarized in this review provide a general guideline for the improvement of MSCs-DDS.
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Affiliation(s)
- Yuanqin Su
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Tianyuan Zhang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou 310058, China
| | - Ting Huang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jianqing Gao
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou 310058, China; Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.
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25
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Wang Y, Yang Y, Yoshitomi T, Kawazoe N, Yang Y, Chen G. Regulation of gene transfection by cell size, shape and elongation on micropatterned surfaces. J Mater Chem B 2021; 9:4329-4339. [PMID: 34013946 DOI: 10.1039/d1tb00815c] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Gene transfection has been widely studied due to its potential applications in tissue repair and gene therapy. Many studies have focused on designing gene carriers and developing novel transfection techniques. However, the influence of cell size, shape and elongation on gene transfection has rarely been investigated. In this study, poly(vinyl alcohol)-micropatterned surfaces were prepared to precisely manipulate the size, shape and elongation of mesenchymal stem cells, and the influences of these factors on gene transfection were investigated. Cell size showed a significant influence on gene transfection. Elongation could affect the gene transfection of large cells but not small cells. Cells with a large spreading area and high aspect ratio showed high transfection with exogenous plasmid DNA. In particular, the transfection efficiency was the highest in micropatterned cells with a spreading area of 5024 μm2 and an aspect ratio of 8 : 1. In contrast, cell shape had no significant influence on gene transfection. The different influences of cell size, shape and elongation were correlated with their respective impacts on cytoskeletal structures, cellular nanoparticle uptake and DNA synthesis. Cells with a large size and elongated morphology showed well-organized actin filaments with a high cellular modulus, therefore promoting cellular nanoparticle uptake and DNA synthesis. Cells with different shapes showed similarities in actin filament organization, cellular modulus, uptake capacity and DNA synthesis. The results suggest the importance of cell size and elongation in exogenous gene transfection and should provide useful information for gene transfection and gene therapy.
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Affiliation(s)
- Yongtao Wang
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan. and Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Yingjun Yang
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan. and Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Toru Yoshitomi
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Naoki Kawazoe
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Yingnan Yang
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Guoping Chen
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan. and Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
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26
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Eichholz KF, Von Euw S, Burdis R, Kelly DJ, Hoey DA. Development of a New Bone-Mimetic Surface Treatment Platform: Nanoneedle Hydroxyapatite (nnHA) Coating. Adv Healthc Mater 2020; 9:e2001102. [PMID: 33111481 DOI: 10.1002/adhm.202001102] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/17/2020] [Indexed: 12/15/2022]
Abstract
The hierarchical structure of bone plays pivotal roles in driving cell behavior and tissue regeneration and must be considered when designing materials for orthopedic applications. Herein, it is aimed to recapitulate the native bone environment by using melt electrowriting to fabricate fibrous microarchitectures which are modified with plate-shaped (pHA) or novel nanoneedle-shaped (nnHA) crystals. Nuclear magnetic resonance spectroscopy, scanning electron microscopy, transmission electron microscopy, and X-ray diffraction demonstrate that these coatings replicate the nanostructure and composition of native bone. Human mesenchymal stem/stromal cell (MSC) mineralization is significantly increased fivefold with pHA scaffolds and 14-fold with nnHA scaffolds. Given the protein stabilizing properties of mineral, these materials are further functionalized with bone morphogenetic protein 2 (BMP2). nnHA treatment facilitates controlled release of BMP2 which further enhance MSC mineral deposition. Finally, the versatility of this nnHA treatment method, which may be used to coat different architectures/materials including fused deposition modeling (FDM) scaffolds and Ti6Al4V titanium, is demonstrated. This study thus outlines a method for fabricating scaffolds with precise fibrous microarchitectures and bone-mimetic nnHA extrafibrillar coatings which significantly enhance MSC osteogenesis and therapeutic protein delivery, and leverages these results to show how this surface treatment method may be applied to a wider field for multiple orthopedic applications.
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Affiliation(s)
- Kian F. Eichholz
- Department of Mechanical, Aeronautical and Biomedical Engineering Materials and Surface Science Institute University of Limerick Limerick V94 T9PX Ireland
- Trinity Centre for Biomedical Engineering Trinity Biomedical Sciences Institute Trinity College Dublin Pearse Street Dublin 2 D02 R590 Ireland
- Department of Mechanical and Manufacturing Engineering School of Engineering Trinity College Dublin Dublin D02 R590 Ireland
| | - Stanislas Von Euw
- Trinity Centre for Biomedical Engineering Trinity Biomedical Sciences Institute Trinity College Dublin Pearse Street Dublin 2 D02 R590 Ireland
- Department of Mechanical and Manufacturing Engineering School of Engineering Trinity College Dublin Dublin D02 R590 Ireland
| | - Ross Burdis
- Trinity Centre for Biomedical Engineering Trinity Biomedical Sciences Institute Trinity College Dublin Pearse Street Dublin 2 D02 R590 Ireland
- Department of Mechanical and Manufacturing Engineering School of Engineering Trinity College Dublin Dublin D02 R590 Ireland
| | - Daniel J. Kelly
- Trinity Centre for Biomedical Engineering Trinity Biomedical Sciences Institute Trinity College Dublin Pearse Street Dublin 2 D02 R590 Ireland
- Department of Mechanical and Manufacturing Engineering School of Engineering Trinity College Dublin Dublin D02 R590 Ireland
- Advanced Materials and Bioengineering Research (AMBER) Centre Trinity College Dublin and RCSI Dublin D02 R590 Ireland
- CÚRAM Centre for Research in Medical Devices National University of Ireland Galway D02 R590 Ireland
| | - David A. Hoey
- Department of Mechanical, Aeronautical and Biomedical Engineering Materials and Surface Science Institute University of Limerick Limerick V94 T9PX Ireland
- Trinity Centre for Biomedical Engineering Trinity Biomedical Sciences Institute Trinity College Dublin Pearse Street Dublin 2 D02 R590 Ireland
- Department of Mechanical and Manufacturing Engineering School of Engineering Trinity College Dublin Dublin D02 R590 Ireland
- Advanced Materials and Bioengineering Research (AMBER) Centre Trinity College Dublin and RCSI Dublin D02 R590 Ireland
- CÚRAM Centre for Research in Medical Devices National University of Ireland Galway D02 R590 Ireland
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27
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Yang R, Chen F, Guo J, Zhou D, Luan S. Recent advances in polymeric biomaterials-based gene delivery for cartilage repair. Bioact Mater 2020; 5:990-1003. [PMID: 32671293 PMCID: PMC7338882 DOI: 10.1016/j.bioactmat.2020.06.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 05/29/2020] [Accepted: 06/10/2020] [Indexed: 12/16/2022] Open
Abstract
Untreated articular cartilage damage normally results in osteoarthritis and even disability that affects millions of people. However, both the existing surgical treatment and tissue engineering approaches are unable to regenerate the original structures of articular cartilage durably, and new strategies for integrative cartilage repair are needed. Gene therapy provides local production of therapeutic factors, especially guided by biomaterials can minimize the diffusion and loss of the genes or gene complexes, achieve accurate spatiotemporally release of gene products, thus provideing long-term treatment for cartilage repair. The widespread application of gene therapy requires the development of safe and effective gene delivery vectors and supportive gene-activated matrices. Among them, polymeric biomaterials are particularly attractive due to their tunable physiochemical properties, as well as excellent adaptive performance. This paper reviews the recent advances in polymeric biomaterial-guided gene delivery for cartilage repair, with an emphasis on the important role of polymeric biomaterials in delivery systems.
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Affiliation(s)
- Ran Yang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, PR China
- College of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, PR China
| | - Fei Chen
- Center for Materials Synthetic Biology, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, PR China
| | - Jinshan Guo
- Department of Histology and Embryology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, PR China
| | - Dongfang Zhou
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, PR China
| | - Shifang Luan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China
- College of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, PR China
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28
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Gantenbein B, Tang S, Guerrero J, Higuita-Castro N, Salazar-Puerta AI, Croft AS, Gazdhar A, Purmessur D. Non-viral Gene Delivery Methods for Bone and Joints. Front Bioeng Biotechnol 2020; 8:598466. [PMID: 33330428 PMCID: PMC7711090 DOI: 10.3389/fbioe.2020.598466] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 10/26/2020] [Indexed: 12/12/2022] Open
Abstract
Viral carrier transport efficiency of gene delivery is high, depending on the type of vector. However, viral delivery poses significant safety concerns such as inefficient/unpredictable reprogramming outcomes, genomic integration, as well as unwarranted immune responses and toxicity. Thus, non-viral gene delivery methods are more feasible for translation as these allow safer delivery of genes and can modulate gene expression transiently both in vivo, ex vivo, and in vitro. Based on current studies, the efficiency of these technologies appears to be more limited, but they are appealing for clinical translation. This review presents a summary of recent advancements in orthopedics, where primarily bone and joints from the musculoskeletal apparatus were targeted. In connective tissues, which are known to have a poor healing capacity, and have a relatively low cell-density, i.e., articular cartilage, bone, and the intervertebral disk (IVD) several approaches have recently been undertaken. We provide a brief overview of the existing technologies, using nano-spheres/engineered vesicles, lipofection, and in vivo electroporation. Here, delivery for microRNA (miRNA), and silencing RNA (siRNA) and DNA plasmids will be discussed. Recent studies will be summarized that aimed to improve regeneration of these tissues, involving the delivery of bone morphogenic proteins (BMPs), such as BMP2 for improvement of bone healing. For articular cartilage/osteochondral junction, non-viral methods concentrate on targeted delivery to chondrocytes or MSCs for tissue engineering-based approaches. For the IVD, growth factors such as GDF5 or GDF6 or developmental transcription factors such as Brachyury or FOXF1 seem to be of high clinical interest. However, the most efficient method of gene transfer is still elusive, as several preclinical studies have reported many different non-viral methods and clinical translation of these techniques still needs to be validated. Here we discuss the non-viral methods applied for bone and joint and propose methods that can be promising in clinical use.
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Affiliation(s)
- Benjamin Gantenbein
- Tissue Engineering for Orthopaedics and Mechanobiology, Department for BioMedical Research (DBMR), Faculty of Medicine, University of Bern, Bern, Switzerland.,Department of Orthopaedic Surgery and Traumatology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Shirley Tang
- Department of Biomedical Engineering and Department of Orthopaedics, Spine Research Institute Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, United States
| | - Julien Guerrero
- Tissue Engineering for Orthopaedics and Mechanobiology, Department for BioMedical Research (DBMR), Faculty of Medicine, University of Bern, Bern, Switzerland.,Department of Orthopaedic Surgery and Traumatology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Natalia Higuita-Castro
- Department of Biomedical Engineering and Department of Surgery, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, United States
| | - Ana I Salazar-Puerta
- Department of Biomedical Engineering and Department of Surgery, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, United States
| | - Andreas S Croft
- Tissue Engineering for Orthopaedics and Mechanobiology, Department for BioMedical Research (DBMR), Faculty of Medicine, University of Bern, Bern, Switzerland.,Department of Orthopaedic Surgery and Traumatology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Amiq Gazdhar
- Department of Pulmonary Medicine, Inselspital, University Hospital, University of Bern, Bern, Switzerland
| | - Devina Purmessur
- Department of Biomedical Engineering and Department of Orthopaedics, Spine Research Institute Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, United States
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29
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Lackington WA, Gomez-Sierra MA, González-Vázquez A, O'Brien FJ, Stoddart MJ, Thompson K. Non-viral Gene Delivery of Interleukin-1 Receptor Antagonist Using Collagen-Hydroxyapatite Scaffold Protects Rat BM-MSCs From IL-1β-Mediated Inhibition of Osteogenesis. Front Bioeng Biotechnol 2020; 8:582012. [PMID: 33123517 PMCID: PMC7573213 DOI: 10.3389/fbioe.2020.582012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 09/16/2020] [Indexed: 11/13/2022] Open
Abstract
Although most bone fractures typically heal without complications, a small proportion of patients (≤10%) experience delayed healing or potential progression to non-union. Interleukin-1 (IL-1β) plays a crucial role in fracture healing as an early driver of inflammation. However, the effects of IL-1β can impede the healing process if they persist long after the establishment of a fracture hematoma, making it a promising target for novel therapies. Accordingly, the overall objective of this study was to develop a novel gene-based therapy that mitigates the negative effects of IL-1β-driven inflammation while providing a structural template for new bone formation. A collagen-hydroxyapatite scaffold (CHA) was used as a platform for the delivery of nanoparticles composed of pDNA, encoding for IL-1 receptor antagonist (IL-1Ra), complexed to the robust non-viral gene delivery vector, polyethyleneimine (PEI). Utilizing pDNA encoding for Gaussia luciferase and GFP as reporter genes, we found that PEI-pDNA nanoparticles induced a transient gene expression profile in rat bone marrow-derived mesenchymal stromal cells (BM-MSCs), with a transfection efficiency of 14.8 ± 1.8% in 2D. BM-MSC viability was significantly affected by PEI-pDNA nanoparticles as evaluated using CellTiter Blue; however, after 10 days in culture this effect was negligible. Transfection with PEI-pIL-1Ra nanoparticles led to functional IL-1Ra production, capable of antagonizing IL-1β-induced expression of secreted embryonic alkaline phosphatase from HEK-Blue-IL-1β reporter cells. Sustained treatment with IL-1β (0.1, 1, and 10 ng/ml) had a dose-dependent negative effect on BM-MSC osteogenesis, both in terms of gene expression (Alpl and Ibsp) and calcium deposition. BM-MSCs transfected with PEI-IL-1Ra nanoparticles were found to be capable of overcoming the inhibitory effects of sustained IL-1β (1 ng/ml) treatments on in vitro osteogenesis. Ultimately, IL-1Ra gene-activated CHA scaffolds supported mineralization of BM-MSCs under chronic inflammatory conditions in vitro, demonstrating potential for future therapeutic applications in vivo.
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Affiliation(s)
| | | | - Arlyng González-Vázquez
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Dublin, Ireland.,AMBER Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Fergal J O'Brien
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Dublin, Ireland.,AMBER Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
| | | | - Keith Thompson
- AO Research Institute Davos, AO Foundation, Davos, Switzerland
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30
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Est-Witte SE, Farris AL, Tzeng SY, Hutton DL, Gong DH, Calabresi KG, Grayson WL, Green JJ. Non-viral gene delivery of HIF-1α promotes angiogenesis in human adipose-derived stem cells. Acta Biomater 2020; 113:279-288. [PMID: 32623098 PMCID: PMC8035702 DOI: 10.1016/j.actbio.2020.06.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 06/05/2020] [Accepted: 06/26/2020] [Indexed: 02/07/2023]
Abstract
Stable and mature vascular formation is a current challenge in engineering functional tissues. Transient, non-viral gene delivery presents a unique platform for delivering genetic information to cells for tissue engineering purposes and to restore blood flow to ischemic tissue. The formation of new blood vessels can be induced by upregulation of hypoxia-inducible factor-1α (HIF-1), among other factors. We hypothesized that biodegradable polymers could be used to efficiently deliver the HIF-1α gene to human adipose-derived stromal/stem cells (hASCs) and that this treatment could recruit an existing endogenous endothelial cell population to induce angiogenesis in a 3D cell construct in vitro. In this study, end-modified poly(β-amino ester) (PBAE) nanocomplexes were first optimized for transfection of hASCs and a new biodegradable polymer with increased hydrophobicity and secondary amine structures, N'-(3-aminopropyl)-N,N-dimethylpropane-1,3-diamine end-modified poly(1,4-butanediol diacrylate-co-4-amino-1-butanol), was found to be most effective. Optimal PBAE nanocomplexes had a hydrodynamic diameter of approximately 140 nm and had a zeta potential of 30 mV. The PBAE polymer self-assembled with HIF-1α plasmid DNA and treatment of hASCs with these nanocomplexes induced 3D vascularization. Cells transfected with this polymer-DNA complex were found to have 106-fold upregulation HIF-1α expression, an approximately 2-fold increase in secreted VEGF, and caused the formation of vessel tubules compared to an untransfected control. These gene therapy biomaterials may be useful for regenerative medicine. STATEMENT OF SIGNIFICANCE: Not only is the formation of stable vasculature a challenge for engineering human tissues in vitro, but it is also of valuable interest to clinical applications such as peripheral artery disease. Previous studies using HIF-1α to induce vascular formation have been limited by the necessity of hypoxic chambers. It would be advantageous to simulate endogenous responses to hypoxia without the need for physical hypoxia. In this study, 3D vascular formation was shown to be inducible through non-viral gene delivery of HIF-1α with new polymeric nanocomplexes. A biodegradable polymer N'-(3-aminopropyl)-N,N-dimethylpropane-1,3-diamine end-modified poly(1,4-butanediol diacrylate-co-4-amino-1-butanol) demonstrates improved transfection of human adipose-derived stem cells. This nanobiotechnology could be a promising strategy for the creation of vasculature for tissue engineering and clinical applications.
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Affiliation(s)
- Savannah E Est-Witte
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Institute for Nanobiotechnology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
| | - Ashley L Farris
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
| | - Stephany Y Tzeng
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Institute for Nanobiotechnology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
| | - Daphne L Hutton
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
| | - Dennis H Gong
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
| | - Kaitlyn G Calabresi
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
| | - Warren L Grayson
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Institute for Nanobiotechnology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21231, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21231, USA.
| | - Jordan J Green
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Institute for Nanobiotechnology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21231, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21231, USA; Department of Oncology and Bloomberg~Kimmel Immunotherapy Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Department of Ophthalmology Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
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31
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Freeman FE, Pitacco P, van Dommelen LHA, Nulty J, Browe DC, Shin JY, Alsberg E, Kelly DJ. 3D bioprinting spatiotemporally defined patterns of growth factors to tightly control tissue regeneration. SCIENCE ADVANCES 2020; 6:eabb5093. [PMID: 32851179 PMCID: PMC7428335 DOI: 10.1126/sciadv.abb5093] [Citation(s) in RCA: 106] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 07/02/2020] [Indexed: 05/16/2023]
Abstract
Therapeutic growth factor delivery typically requires supraphysiological dosages, which can cause undesirable off-target effects. The aim of this study was to 3D bioprint implants containing spatiotemporally defined patterns of growth factors optimized for coupled angiogenesis and osteogenesis. Using nanoparticle functionalized bioinks, it was possible to print implants with distinct growth factor patterns and release profiles spanning from days to weeks. The extent of angiogenesis in vivo depended on the spatial presentation of vascular endothelial growth factor (VEGF). Higher levels of vessel invasion were observed in implants containing a spatial gradient of VEGF compared to those homogenously loaded with the same total amount of protein. Printed implants containing a gradient of VEGF, coupled with spatially defined BMP-2 localization and release kinetics, accelerated large bone defect healing with little heterotopic bone formation. This demonstrates the potential of growth factor printing, a putative point of care therapy, for tightly controlled tissue regeneration.
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Affiliation(s)
- Fiona E. Freeman
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland
- Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Ireland
| | - Pierluca Pitacco
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland
- Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Ireland
| | - Lieke H. A. van Dommelen
- Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Jessica Nulty
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland
- Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Ireland
| | - David C. Browe
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland
- Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Ireland
| | - Jung-Youn Shin
- Departments of Biomedical Engineering and Orthopaedic Surgery, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Eben Alsberg
- Departments of Biomedical Engineering and Orthopaedic Surgery, Case Western Reserve University, Cleveland, OH 44106, USA
- Departments of Biomedical Engineering, Pharmacology, Orthopaedics, and Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Daniel J. Kelly
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland
- Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Ireland
- Department of Anatomy, Royal College of Surgeons in Ireland, Dublin, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, Ireland
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32
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Salmasi Z, Hashemi M, Mahdipour E, Nourani H, Abnous K, Ramezani M. Mesenchymal stem cells engineered by modified polyethylenimine polymer for targeted cancer gene therapy, in vitro and in vivo. Biotechnol Prog 2020; 36:e3025. [PMID: 32410328 DOI: 10.1002/btpr.3025] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 05/08/2020] [Accepted: 05/11/2020] [Indexed: 12/29/2022]
Abstract
Cell-based delivery system is a promising strategy to protect therapeutic agents from the immune system and provide targeted delivery. Mesenchymal stem cells (MSCs) have recently been introduced as an encouraging vehicle in cell-based gene therapy due to their unique features including tumor-tropic property and migratory ability. However, gene transfer into MSCs is limited due to low efficiency and cytotoxicity of carriers. In this study, we designed a novel delivery system based on polyethylenimine (PEI25 ) to improve these features of carrier and transfect plasmid encoding TRAIL to MSCs. Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is a death ligand of TNF family with selective effect on cancerous cells. Then, death induction and migration ability of TRAIL-expressing MSCs was studied in melanoma cells. The effect of engineered-MSCs as an antitumor vehicle was also investigated in mice bearing melanoma cells. Our findings indicated that heterocyclic amine derivative of PEI25 showed significant improvement in MSCs viability determined by MTT assay and gene expression using fluorescent microscopy, flow cytometry, and Western blot analysis. We observed that engineered-MSCs could migrate toward and induce cell death in B16F0 cells in vitro. The single administration of TRAIL-expressing MSCs could delay tumor appearance and efficiently reduce tumor weights. Hematoxylin and eosin staining of tumor sections revealed extensive neoplastic cells necrosis. Furthermore, engineered-MSCs could migrate and localize to tumors sites within 5 days. Our results indicated that MSCs engineered by modified-PEI/TRAIL complexes could be considered as a promising cellular vehicle for targeted tumor suppression.
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Affiliation(s)
- Zahra Salmasi
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Hashemi
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Elahe Mahdipour
- Department of Medical Biotechnology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Nourani
- Department of Pathobiology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Khalil Abnous
- Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Ramezani
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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33
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Mahon OR, Browe DC, Gonzalez-Fernandez T, Pitacco P, Whelan IT, Von Euw S, Hobbs C, Nicolosi V, Cunningham KT, Mills KH, Kelly DJ, Dunne A. Nano-particle mediated M2 macrophage polarization enhances bone formation and MSC osteogenesis in an IL-10 dependent manner. Biomaterials 2020; 239:119833. [DOI: 10.1016/j.biomaterials.2020.119833] [Citation(s) in RCA: 107] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 01/24/2020] [Accepted: 01/26/2020] [Indexed: 12/22/2022]
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34
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Yan LP, Castaño IM, Sridharan R, Kelly D, Lemoine M, Cavanagh BL, Dunne NJ, McCarthy HO, O'Brien FJ. Collagen/GAG scaffolds activated by RALA-siMMP-9 complexes with potential for improved diabetic foot ulcer healing. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 114:111022. [PMID: 32993972 DOI: 10.1016/j.msec.2020.111022] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 04/07/2020] [Accepted: 04/26/2020] [Indexed: 02/06/2023]
Abstract
Impaired wound healing of diabetic foot ulcers has been linked to high MMP-9 levels at the wound site. Strategies aimed at the simultaneous downregulation of the MMP-9 level in situ and the regeneration of impaired tissue are critical for improved diabetic foot ulcer (DFU) healing. To fulfil this aim, collagen/GAG (Col/GAG) scaffolds activated by MMP-9-targeting siRNA (siMMP-9) were developed in this study. The siMMP-9 complexes were successfully formed by mixing the RALA cell penetrating peptide with siMMP-9. The complexes formulated at N:P ratios of 6 to 15 had a diameter around 100 nm and a positive zeta potential about 40 mV, making them ideal for cellular uptake. In 2 dimensional (2D) culture of human fibroblasts, the cellular uptake of the complexes surpassed 60% and corresponded to a 60% reduction in MMP-9 gene expression in low glucose culture. In high glucose culture, which induces over-expression of MMP-9 and therefore serves as an in vitro model mimicking conditions in DFU, the MMP-9 gene could be downregulated by around 90%. In the 3D culture of fibroblasts, the siMMP-9 activated Col/GAG scaffolds displayed excellent cytocompatibility and ~60% and 40% MMP-9 gene downregulation in low and high glucose culture, respectively. When the siMMP-9 complexes were applied to THP-1 macrophages, the primary cell type producing MMP-9 in DFU, MMP-9 gene expression was significantly reduced by 70% and 50% for M0 and M1 subsets, in 2D culture. In the scaffolds, the MMP-9 gene and protein level of M1 macrophages decreased by around 50% and 30% respectively. Taken together, this study demonstrates that the RALA-siMMP-9 activated Col/GAG scaffolds possess high potential as a promising regenerative platform for improved DFU healing.
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Affiliation(s)
- Le-Ping Yan
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland; Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin (TCD), Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI, Dublin, Ireland.
| | - Irene Mencía Castaño
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin (TCD), Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI, Dublin, Ireland
| | - Rukmani Sridharan
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin (TCD), Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI, Dublin, Ireland
| | - Domhnall Kelly
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin (TCD), Dublin, Ireland
| | - Mark Lemoine
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin (TCD), Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI, Dublin, Ireland
| | - Brenton L Cavanagh
- Cellular and Molecular Imaging Core, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Nicholas J Dunne
- School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin, Ireland
| | - Helen O McCarthy
- School of Pharmacy, Queen's University Belfast, Belfast BT9 7BL, UK
| | - Fergal J O'Brien
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin (TCD), Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI, Dublin, Ireland.
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Alvarez-Rivera F, Rey-Rico A, Venkatesan JK, Diaz-Gomez L, Cucchiarini M, Concheiro A, Alvarez-Lorenzo C. Controlled Release of rAAV Vectors from APMA-Functionalized Contact Lenses for Corneal Gene Therapy. Pharmaceutics 2020; 12:pharmaceutics12040335. [PMID: 32283694 PMCID: PMC7238179 DOI: 10.3390/pharmaceutics12040335] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/03/2020] [Accepted: 04/07/2020] [Indexed: 12/21/2022] Open
Abstract
As an alternative to eye drops and ocular injections for gene therapy, the aim of this work was to design for the first time hydrogel contact lenses that can act as platforms for the controlled delivery of viral vectors (recombinant adeno-associated virus, rAAV) to the eye in an effective way with improved patient compliance. Hydrogels of hydroxyethyl methacrylate (HEMA) with aminopropyl methacrylamide (APMA) (H1: 40, and H2: 80 mM) or without (Hc: 0 mM) were synthesized, sterilized by steam heat (121 °C, 20 min), and then tested for gene therapy using rAAV vectors to deliver the genes to the cornea. The hydrogels showed adequate light transparency, oxygen permeability, and swelling for use as contact lenses. Loading of viral vectors (rAAV-lacZ, rAAV-RFP, or rAAV-hIGF-I) was carried out at 4 °C to maintain viral vector titer. Release in culture medium was monitored by fluorescence with Cy3-rAAV-lacZ and AAV Titration ELISA. Transduction efficacy was tested through reporter genes lacZ and RFP in human bone marrow derived mesenchymal stem cells (hMSCs). lacZ was detected with X-Gal staining and quantified with Beta-Glo®, and RFP was monitored by fluorescence. The ability of rAAV-hIGF-I-loaded hydrogels to trigger cell proliferation in hMSCs was evaluated by immunohistochemistry. Finally, the ability of rAAV-lacZ-loaded hydrogels to transduce bovine cornea was confirmed through detection with X-Gal staining of β-galactosidase expressed within the tissue.
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Affiliation(s)
- Fernando Alvarez-Rivera
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+DFarma, Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (F.A.-R.); (L.D.-G.); (A.C.)
| | - Ana Rey-Rico
- Cell Therapy and Regenerative Medicine Unit, Centro de Investigacións Científicas Avanzadas (CICA), Universidade da Coruña, Campus de A Coruña, 15071 A Coruña, Spain;
| | - Jagadeesh K Venkatesan
- Center of Experimental Orthopaedics, Saarland University Medical Center, 66421 Homburg, Germany; (J.K.V.); (M.C.)
| | - Luis Diaz-Gomez
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+DFarma, Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (F.A.-R.); (L.D.-G.); (A.C.)
| | - Magali Cucchiarini
- Center of Experimental Orthopaedics, Saarland University Medical Center, 66421 Homburg, Germany; (J.K.V.); (M.C.)
| | - Angel Concheiro
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+DFarma, Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (F.A.-R.); (L.D.-G.); (A.C.)
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+DFarma, Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (F.A.-R.); (L.D.-G.); (A.C.)
- Correspondence: ; Tel.: +34-881815239
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Venkatesan JK, Falentin-Daudré C, Leroux A, Migonney V, Cucchiarini M. Biomaterial-Guided Recombinant Adeno-associated Virus Delivery from Poly(Sodium Styrene Sulfonate)-Grafted Poly(ɛ-Caprolactone) Films to Target Human Bone Marrow Aspirates. Tissue Eng Part A 2020; 26:450-459. [DOI: 10.1089/ten.tea.2019.0165] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Affiliation(s)
- Jagadeesh K. Venkatesan
- Center of Experimental Orthopaedics, Saarland University Medical Center, Homburg/Saar, Germany
| | | | - Amélie Leroux
- Université Paris 13-UMR CNRS 7244-CSPBAT-LBPS-UFR SMBH, Bobigny, France
| | | | - Magali Cucchiarini
- Center of Experimental Orthopaedics, Saarland University Medical Center, Homburg/Saar, Germany
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Johnstone B, Stoddart MJ, Im GI. Multi-Disciplinary Approaches for Cell-Based Cartilage Regeneration. J Orthop Res 2020; 38:463-472. [PMID: 31478253 DOI: 10.1002/jor.24458] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 08/23/2019] [Indexed: 02/04/2023]
Abstract
Articular cartilage does not regenerate in adults. A lot of time and resources have been dedicated to cartilage regeneration research. The current understanding suggests that multi-disciplinary approach including biologic, genetic, and mechanical stimulations may be needed for cell-based cartilage regeneration. This review summarizes contents of a workshop sponsored by International Combined Orthopaedic Societies during the 2019 annual meeting of the Orthopaedic Research Society held in Austin, Texas. Three approaches for cell-based cartilage regeneration were introduced, including cellular basis of chondrogenesis, gene-enhanced cartilage regeneration, and physical modulation to divert stem cells to chondrogenic cell fate. While the complicated nature of cartilage regeneration has not allowed us to achieve successful regeneration of hyaline articular cartilage so far, the utilization of multi-disciplinary approaches in various fields of biomedical engineering will provide means to achieve this goal faster. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 38:463-472, 2020.
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Affiliation(s)
- Brian Johnstone
- Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, Portland, Oregon
| | | | - Gun-Il Im
- Integrative Research Institute for Regenerative Biomedical Engineering, Dongguk University, Goyang, Republic of Korea
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Vorwald CE, Joshee S, Leach JK. Spatial localization of endothelial cells in heterotypic spheroids influences Notch signaling. J Mol Med (Berl) 2020; 98:425-435. [PMID: 32020237 DOI: 10.1007/s00109-020-01883-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 01/20/2020] [Accepted: 01/23/2020] [Indexed: 12/18/2022]
Abstract
Cell-based therapeutic approaches are an exciting strategy to replenish compromised endothelial cell (EC) populations that contribute to impaired vasculogenesis. Co-cultures of ECs and mesenchymal stromal cells (MSCs) can enhance neovascularization over ECs alone, but the efficacy of cells is limited by rapid cell death upon implantation. Co-culture spheroids exhibit improved survival compared with monodisperse cells, yet little is known about the influence of spatial regulation of ECs within co-culture spheroids. We hypothesized that EC sprouting from co-culture spheroids is a function of EC spatial localization. We formed co-culture spheroids containing ECs and MSCs in two formats: ECs uniformly distributed throughout the spheroid (i.e., mixed) or seeded on the perimeter of the MSC core (i.e., shell). Qualitative observations suggested increased vasculogenesis for mixed co-culture spheroids compared with shell conformations as early as day 3, yet quantitative metrics did not reveal significant differences in network formation between these 3D structures. Notch3 expression demonstrated significant increases in cell-cell communication in mixed conformations compared with shell counterparts. Furthermore, knockdown of Notch3 in MSCs abrogated the vasculogenic potential of mixed spheroids, supporting its role in promoting EC-MSC contacts. This study highlights the direct impact of EC-MSC contacts on sprouting and provides insight to improve the quality of network formation. KEY MESSAGES: • Endothelial cell (EC) localization can be controlled in co-culture EC-MSC spheroids. • Mixed spheroids exhibit consistent networks compared to shell counterparts. • Differences in NOTCH3 were observed between mixed and shell spheroids. • NOTCH3 may be a necessary target for improved vasculogenic potential.
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Affiliation(s)
- Charlotte E Vorwald
- Department of Biomedical Engineering, University of California, Davis, 451 Health Sciences Drive, Davis, CA, 95616, USA
| | - Shreeya Joshee
- Department of Biomedical Engineering, University of California, Davis, 451 Health Sciences Drive, Davis, CA, 95616, USA
| | - J Kent Leach
- Department of Biomedical Engineering, University of California, Davis, 451 Health Sciences Drive, Davis, CA, 95616, USA. .,Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA, 95817, USA.
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Levingstone TJ, Herbaj S, Redmond J, McCarthy HO, Dunne NJ. Calcium Phosphate Nanoparticles-Based Systems for RNAi Delivery: Applications in Bone Tissue Regeneration. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E146. [PMID: 31947548 PMCID: PMC7023416 DOI: 10.3390/nano10010146] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 12/16/2019] [Accepted: 12/21/2019] [Indexed: 12/11/2022]
Abstract
Bone-related injury and disease constitute a significant global burden both socially and economically. Current treatments have many limitations and thus the development of new approaches for bone-related conditions is imperative. Gene therapy is an emerging approach for effective bone repair and regeneration, with notable interest in the use of RNA interference (RNAi) systems to regulate gene expression in the bone microenvironment. Calcium phosphate nanoparticles represent promising materials for use as non-viral vectors for gene therapy in bone tissue engineering applications due to their many favorable properties, including biocompatibility, osteoinductivity, osteoconductivity, and strong affinity for binding to nucleic acids. However, low transfection rates present a significant barrier to their clinical use. This article reviews the benefits of calcium phosphate nanoparticles for RNAi delivery and highlights the role of surface functionalization in increasing calcium phosphate nanoparticles stability, improving cellular uptake and increasing transfection efficiency. Currently, the underlying mechanistic principles relating to these systems and their interplay during in vivo bone formation is not wholly understood. Furthermore, the optimal microRNA targets for particular bone tissue regeneration applications are still unclear. Therefore, further research is required in order to achieve the optimal calcium phosphate nanoparticles-based systems for RNAi delivery for bone tissue regeneration.
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Affiliation(s)
- Tanya J. Levingstone
- School of Mechanical and Manufacturing Engineering, Dublin City University, 9 Dublin, Ireland; (T.J.L.); (S.H.); (J.R.)
- Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, 9 Dublin, Ireland
- Advanced Processing Technology Research Centre, Dublin City University, 9 Dublin, Ireland
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, 2 Dublin, Ireland
| | - Simona Herbaj
- School of Mechanical and Manufacturing Engineering, Dublin City University, 9 Dublin, Ireland; (T.J.L.); (S.H.); (J.R.)
- Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, 9 Dublin, Ireland
| | - John Redmond
- School of Mechanical and Manufacturing Engineering, Dublin City University, 9 Dublin, Ireland; (T.J.L.); (S.H.); (J.R.)
- Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, 9 Dublin, Ireland
| | - Helen O. McCarthy
- School of Pharmacy, Queen’s University Belfast, Belfast BT9 7BL, UK;
| | - Nicholas J. Dunne
- School of Mechanical and Manufacturing Engineering, Dublin City University, 9 Dublin, Ireland; (T.J.L.); (S.H.); (J.R.)
- Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, 9 Dublin, Ireland
- Advanced Processing Technology Research Centre, Dublin City University, 9 Dublin, Ireland
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, 2 Dublin, Ireland
- School of Pharmacy, Queen’s University Belfast, Belfast BT9 7BL, UK;
- Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, 2 Dublin, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, 2 Dublin, Ireland
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40
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Attia N, Mashal M. Mesenchymal Stem Cells: The Past Present and Future. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1312:107-129. [PMID: 33159306 DOI: 10.1007/5584_2020_595] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The biomedical applications of mesenchymal stem cells (MSCs) have gained expanding attention over the past three decades. MSCs are easily obtained from various tissue types (e.g. bone marrow, fat, cord blood, etc.), are capable of self-renewal, and could be induced to differentiate into several cell lineages for countless biomedical applications. In addition, when transplanted, MSCs are not detected by immune surveillance, thus do not lead to graft rejection. Moreover, they can home towards affected tissues and induce their therapeutic effect in a cell-base and/or a cell-free manner. These properties, and many others, have made MSCs appealing therapeutic cell candidates (for cell and/or gene therapy) in myriad clinical conditions. However, similar to any other therapeutic tool, MSCs still have their own limitations and grey areas that entail more research for better understanding and optimization. Herein, we present a brief overview of various pre-clinical/clinical applications of MSCs in regenerative medicine and discuss limitations and future challenges.
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Affiliation(s)
- Noha Attia
- Department of Basic Sciences, The American University of Antigua-College of Medicine, Coolidge, Antigua and Barbuda. .,The Center of research and evaluation, The American University of Antigua-College of Medicine, Coolidge, Antigua and Barbuda. .,Histology and Cell Biology Department, Faculty of Medicine, University of Alexandria, Alexandria, Egypt. .,NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain.
| | - Mohamed Mashal
- The Center of research and evaluation, The American University of Antigua-College of Medicine, Coolidge, Antigua and Barbuda.,NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain
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Sun C, Dong M, Song Y, Zhang J, Wang Y, Chang Y, Yu H, Xu N, Xie Z, Liu W. Enhancing the antivirus activity of chimeric canine interferon with ricin subunit B by using nanoparticle formulations. RSC Adv 2020; 10:12671-12679. [PMID: 35497620 PMCID: PMC9051121 DOI: 10.1039/c9ra10557c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 02/18/2020] [Indexed: 12/04/2022] Open
Abstract
Despite interferon alpha having a broad spectrum of antiviral activity and strong antiproliferative activity, its applications are severely limited due to the intrinsic properties of proteins, such as poor stability and short serum half-life. In our study, canine interferon alpha (CaIFNα) gene was fused with the ricin toxin B chain (RTB) to form rCaIFNα/RTB, which encodes a 463-amino acid protein containing a 15-amino acid encoded (G4S)3 flexible linker. After expression in prokaryote, purification and renaturation, the cytotoxicity and antiviral activity of rCaIFNα/RTB were investigated in Madin–Darby canine kidney (MDCK) cells. rCaIFNα/RTB exerted a superior anti-vesicular stomatitis virus (VSV) activity on MDCK cells. Furthermore, we have developed a nanoparticle formulation of rCaIFNα/RTB by using polyethylenimine (PEI) through electrostatic interaction. rCaIFNα/RTB@PEI10000 is more stable than rCaIFNα/RTB at various pH and temperature levels, and it possesses enhanced antiviral activity. Our findings facilitate further research on the role of type I IFN in antiviral defense responses in Canis lupus familiaris. Despite interferon alpha having a broad spectrum of antiviral activity and strong antiproliferative activity, its applications are severely limited due to the intrinsic properties of proteins, such as poor stability and short serum half-life.![]()
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Affiliation(s)
- Chengbiao Sun
- Institute of Military Veterinary Medicine
- Academy of Military Medical Sciences
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control
- Changchun
- P. R. China
| | - Mingxin Dong
- Institute of Military Veterinary Medicine
- Academy of Military Medical Sciences
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control
- Changchun
- P. R. China
| | - Yucong Song
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- China Academy of Sciences
- Changchun
- P. R. China
| | - Jianxu Zhang
- Institute of Military Veterinary Medicine
- Academy of Military Medical Sciences
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control
- Changchun
- P. R. China
| | - Yan Wang
- Institute of Military Veterinary Medicine
- Academy of Military Medical Sciences
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control
- Changchun
- P. R. China
| | | | - Haotian Yu
- Institute of Military Veterinary Medicine
- Academy of Military Medical Sciences
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control
- Changchun
- P. R. China
| | - Na Xu
- Jilin Medical University
- P. R. China
| | - Zhigang Xie
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- China Academy of Sciences
- Changchun
- P. R. China
| | - Wensen Liu
- Institute of Military Veterinary Medicine
- Academy of Military Medical Sciences
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control
- Changchun
- P. R. China
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Levingstone TJ, Herbaj S, Dunne NJ. Calcium Phosphate Nanoparticles for Therapeutic Applications in Bone Regeneration. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1570. [PMID: 31698700 PMCID: PMC6915504 DOI: 10.3390/nano9111570] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/19/2019] [Accepted: 11/01/2019] [Indexed: 01/01/2023]
Abstract
Bone injuries and diseases constitute a burden both socially and economically, as the consequences of a lack of effective treatments affect both the patients' quality of life and the costs on the health systems. This impended need has led the research community's efforts to establish efficacious bone tissue engineering solutions. There has been a recent focus on the use of biomaterial-based nanoparticles for the delivery of therapeutic factors. Among the biomaterials being considered to date, calcium phosphates have emerged as one of the most promising materials for bone repair applications due to their osteoconductivity, osteoinductivity and their ability to be resorbed in the body. Calcium phosphate nanoparticles have received particular attention as non-viral vectors for gene therapy, as factors such as plasmid DNAs, microRNAs (miRNA) and silencing RNA (siRNAs) can be easily incorporated on their surface. Calcium phosphate nanoparticles loaded with therapeutic factors have also been delivered to the site of bone injury using scaffolds and hydrogels. This review provides an extensive overview of the current state-of-the-art relating to the design and synthesis of calcium phosphate nanoparticles as carriers for therapeutic factors, the mechanisms of therapeutic factors' loading and release, and their application in bone tissue engineering.
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Affiliation(s)
- Tanya J. Levingstone
- School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin 9, Ireland; (T.J.L.); (S.H.)
- Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, Stokes Building, Collins Avenue, Dublin 9, Ireland
- Tissue Engineering Research Group, Royal College of Surgeons in Ireland, Dublin 2, Ireland
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 9, Ireland
| | - Simona Herbaj
- School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin 9, Ireland; (T.J.L.); (S.H.)
- Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, Stokes Building, Collins Avenue, Dublin 9, Ireland
| | - Nicholas J. Dunne
- School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin 9, Ireland; (T.J.L.); (S.H.)
- Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, Stokes Building, Collins Avenue, Dublin 9, Ireland
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 9, Ireland
- School of Pharmacy, Queen’s University Belfast, Belfast BT7 1NN, UK
- Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Dublin 2, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin 2, Ireland
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Methotrexate-plasmid DNA polyplexes for cancer therapy: Characterization, cancer cell targeting ability and tuned in vitro transfection. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111391] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Gonzalez-Fernandez T, Sikorski P, Leach JK. Bio-instructive materials for musculoskeletal regeneration. Acta Biomater 2019; 96:20-34. [PMID: 31302298 PMCID: PMC6717669 DOI: 10.1016/j.actbio.2019.07.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 06/26/2019] [Accepted: 07/09/2019] [Indexed: 02/06/2023]
Abstract
The prevalence and cost of disorders affecting the musculoskeletal system are predicted to rise significantly in the coming years due to the aging global population and the increase of associated risk factors. Despite being the second largest cause of disability, the clinical options for therapeutic intervention remain limited. The clinical translation of cell-based therapies for the treatment of musculoskeletal disorders faces many challenges including maintenance of cell survival in the harsh in vivo environment and the lack of control over regulating cell phenotype upon implantation. In order to address these challenges, the development of bio-instructive materials to modulate cell behavior has taken center stage as a strategy to increase the therapeutic potential of various cell populations. However, the determination of the necessary cues for a specific application and how these signals should be presented from a biomaterial remains elusive. This review highlights recent biochemical and physical strategies used to engineer bio-instructive materials for the repair of musculoskeletal tissues. There is a particular emphasis on emerging efforts such as the engineering of immunomodulatory and antibacterial materials, as well as the incorporation of these strategies into biofabrication and organ-on-a-chip approaches. STATEMENT OF SIGNIFICANCE: Disorders affecting the musculoskeletal system affect individuals across the lifespan and have a profound effect on mobility and quality of life. While small defects in many tissues can heal successfully, larger defects are often unable to heal or instead heal with inferior quality fibrous tissue and require clinical intervention. Cell-based therapies are a promising option for clinical translation, yet challenges related to maintaining cell survival and instructing cell phenotype upon implantation have limited the success of this approach. Bio-instructive materials provide an exciting opportunity to modulate cell behavior and enhance the efficacy of cell-based approaches for musculoskeletal repair. However, the identification of critical instructive cues and how to present these stimuli is a focus of intense investigation. This review highlights recent biochemical and physical strategies used to engineer bio-instructive materials for the repair of musculoskeletal tissues, while also considering exciting progress in the engineering of immunomodulatory and antibacterial materials.
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Affiliation(s)
| | - Pawel Sikorski
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, USA; Department of Physics, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
| | - J Kent Leach
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, USA; Department of Orthopaedic Surgery, School of Medicine, UC Davis Health, Sacramento, CA, USA.
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Khalil AS, Yu X, Dang PN, Alsberg E, Murphy WL. A microparticle approach for non-viral gene delivery within 3D human mesenchymal stromal cell aggregates. Acta Biomater 2019; 95:408-417. [PMID: 31004846 PMCID: PMC6888862 DOI: 10.1016/j.actbio.2019.04.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 04/03/2019] [Accepted: 04/12/2019] [Indexed: 12/11/2022]
Abstract
Three-dimensional (3D) multicellular aggregates, in comparison to two-dimensional monolayer culture, can provide tissue culture models that better recapitulate the abundant cell-cell and cell-matrix interactions found in vivo. In addition, aggregates are potentially useful building blocks for tissue engineering. However, control over the interior aggregate microenvironment is challenging due to inherent barriers for diffusion of biological mediators (e.g. growth factors) throughout the multicellular aggregates. Previous studies have shown that incorporation of biomaterials into multicellular aggregates can support cell survival and control differentiation of stem cell aggregates by delivering morphogens from within the 3D construct. In this study, we developed a highly efficient microparticle-based gene delivery approach to uniformly transfect human mesenchymal stromal cells (hMSC) within multicellular aggregates and cell sheets. We hypothesized that release of plasmid DNA (pDNA) lipoplexes from mineral-coated microparticles (MCMs) within 3D hMSC constructs would improve transfection in comparison to standard free pDNA lipoplex delivery in the media. Our approach increased transfection efficiency 5-fold over delivery of free pDNA lipoplexes in the media and resulted in homogenous distribution of transfected cells throughout the 3D constructs. Additionally, we found that MCMs improved hMSC transfection by specifically increasing macropinocytosis-mediated uptake of pDNA. Finally, we showed up to a three-fold increase of bone morphogenetic protein-2 (BMP-2) expression and enhanced calcium deposition within 3D hMSC constructs following MCM-mediated delivery of a BMP-2 encoding plasmid and culture in osteogenic medium. The technology described here provides a valuable tool for achieving efficient and homogenous transfection of 3D cell constructs and is therefore of particular value in tissue engineering and regenerative medicine applications. STATEMENT OF SIGNIFICANCE: This original research describes a materials-based approach, whereby use of mineral-coated microparticles improves the efficiency of non-viral gene delivery in three-dimensional human mesenchymal stromal cell constructs. Specifically, it demonstrates the use of mineral-coated microparticles to enable highly efficient transfection of human mesenchymal stromal cells in large, 3D culture formats. The manuscript also identifies specific endocytosis pathways that interact with the mineral coating to afford the improved transfection efficiency, as well as demonstrates the utility of this approach toward improving differentiation of large cell constructs. We feel that this manuscript will impact the current understanding and near-term development of materials for non-viral gene delivery in broad tissue engineering and biofabrication applications, and therefore be of interest to a diverse biomaterials audience.
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Affiliation(s)
- Andrew S Khalil
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Xiaohua Yu
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Phuong N Dang
- Departments of Biomedical Engineering and Orthopedic Surgery, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Eben Alsberg
- AO Foundation Collaborative Research Center, Davos, Switzerland; Departments of Biomedical Engineering and Orthopedic Surgery, Case Western Reserve University, Cleveland, OH 44106, USA; The National Center for Regenerative Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; School of Dentistry, Kyung Hee University, Seoul, South Korea
| | - William L Murphy
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; Materials Science Program, University of Wisconsin-Madison, Madison, WI 53706, USA; Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI 53705, USA; AO Foundation Collaborative Research Center, Davos, Switzerland.
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Raftery RM, Walsh DP, Blokpoel Ferreras L, Mencía Castaño I, Chen G, LeMoine M, Osman G, Shakesheff KM, Dixon JE, O'Brien FJ. Highly versatile cell-penetrating peptide loaded scaffold for efficient and localised gene delivery to multiple cell types: From development to application in tissue engineering. Biomaterials 2019; 216:119277. [PMID: 31252371 DOI: 10.1016/j.biomaterials.2019.119277] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/08/2019] [Accepted: 06/10/2019] [Indexed: 01/10/2023]
Abstract
Gene therapy has recently come of age with seven viral vector-based therapies gaining regulatory approval in recent years. In tissue engineering, non-viral vectors are preferred over viral vectors, however, lower transfection efficiencies and difficulties with delivery remain major limitations hampering clinical translation. This study describes the development of a novel multi-domain cell-penetrating peptide, GET, designed to enhance cell interaction and intracellular translocation of nucleic acids; combined with a series of porous collagen-based scaffolds with proven regenerative potential for different indications. GET was capable of transfecting cell types from all three germ layers, including stem cells, with an efficiency comparable to Lipofectamine® 3000, without inducing cytotoxicity. When implanted in vivo, GET gene-activated scaffolds allowed for host cell infiltration, transfection localized to the implantation site and sustained, but transient, changes in gene expression - demonstrating both the efficacy and safety of the approach. Finally, GET carrying osteogenic (pBMP-2) and angiogenic (pVEGF) genes were incorporated into collagen-hydroxyapatite scaffolds and with a single 2 μg dose of therapeutic pDNA, induced complete repair of critical-sized bone defects within 4 weeks. GET represents an exciting development in gene therapy and by combining it with a scaffold-based delivery system offers tissue engineering solutions for a myriad of regenerative indications.
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Affiliation(s)
- Rosanne M Raftery
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - David P Walsh
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland; Translational Research in Nanomedical Devices, School of Pharmacy, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Lia Blokpoel Ferreras
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - Irene Mencía Castaño
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - Gang Chen
- Department of Physiology and Medical Physics, Centre for the Study of Neurological Disorders, Microsurgical Research and Training Facility (MRTF), Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Mark LeMoine
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - Gizem Osman
- Centre for Biomedical Sciences, School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | - Kevin M Shakesheff
- Centre for Biomedical Sciences, School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | - James E Dixon
- Centre for Biomedical Sciences, School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | - Fergal J O'Brien
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland.
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47
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Kelly DC, Raftery RM, Curtin CM, O'Driscoll CM, O'Brien FJ. Scaffold-Based Delivery of Nucleic Acid Therapeutics for Enhanced Bone and Cartilage Repair. J Orthop Res 2019; 37:1671-1680. [PMID: 31042304 DOI: 10.1002/jor.24321] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 04/09/2019] [Indexed: 02/04/2023]
Abstract
Recent advances in tissue engineering have made progress toward the development of biomaterials capable of the delivery of growth factors, such as bone morphogenetic proteins, in order to promote enhanced tissue repair. However, controlling the release of these growth factors on demand and within the desired localized area is a significant challenge and the associated high costs and side effects of uncontrolled delivery have proven increasingly problematic in clinical orthopedics. Gene therapy may be a valuable tool to avoid the limitations of local delivery of growth factors. Following a series of setbacks in the 1990s, the field of gene therapy is now seeing improvements in safety and efficacy resulting in substantial clinical progress and a resurgence in confidence. Biomaterial scaffold-mediated gene therapy provides a template for cell infiltration and tissue formation while promoting transfection of cells to engineer therapeutic proteins in a sustained but ultimately transient fashion. Additionally, scaffold-mediated delivery of RNA-based therapeutics can silence specific genes associated with orthopedic pathological states. This review will provide an overview of the current state-of-the-art in the field of gene-activated scaffolds and their use within orthopedic tissue engineering applications. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:1671-1680, 2019.
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Affiliation(s)
- Domhnall C Kelly
- Tissue Engineering Research Group (TERG), Department of Anatomy, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland.,Trinity Centre of Bioengineering (TCBE), Trinity College Dublin (TCD), Dublin, Ireland.,Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland.,Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI, Galway), Galway, Ireland
| | - Rosanne M Raftery
- Tissue Engineering Research Group (TERG), Department of Anatomy, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland.,Trinity Centre of Bioengineering (TCBE), Trinity College Dublin (TCD), Dublin, Ireland.,Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - Caroline M Curtin
- Tissue Engineering Research Group (TERG), Department of Anatomy, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland.,Trinity Centre of Bioengineering (TCBE), Trinity College Dublin (TCD), Dublin, Ireland.,Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - Caitriona M O'Driscoll
- Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI, Galway), Galway, Ireland.,Pharmacodelivery Group, School of Pharmacy, University College Cork, Cork, Ireland
| | - Fergal J O'Brien
- Tissue Engineering Research Group (TERG), Department of Anatomy, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland.,Trinity Centre of Bioengineering (TCBE), Trinity College Dublin (TCD), Dublin, Ireland.,Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland.,Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI, Galway), Galway, Ireland
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48
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Sheehy E, Kelly D, O'Brien F. Biomaterial-based endochondral bone regeneration: a shift from traditional tissue engineering paradigms to developmentally inspired strategies. Mater Today Bio 2019; 3:100009. [PMID: 32159148 PMCID: PMC7061547 DOI: 10.1016/j.mtbio.2019.100009] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 05/23/2019] [Accepted: 05/24/2019] [Indexed: 02/06/2023] Open
Abstract
There is an urgent, clinical need for an alternative to the use of autologous grafts for the ever increasing number of bone grafting procedures performed annually. Herein, we describe a developmentally inspired approach to bone tissue engineering, which focuses on leveraging biomaterials as platforms for recapitulating the process of endochondral ossification. To begin, we describe the traditional biomaterial-based approaches to tissue engineering that have been investigated as methods to promote in vivo bone regeneration, including the use of three-dimensional biomimetic scaffolds, the delivery of growth factors and recombinant proteins, and the in vitro engineering of mineralized bone-like tissue. Thereafter, we suggest that some of the hurdles encountered by these traditional tissue engineering approaches may be circumvented by modulating the endochondral route to bone repair and, to that end, we assess various biomaterials that can be used in combination with cells and signaling factors to engineer hypertrophic cartilaginous grafts capable of promoting endochondral bone formation. Finally, we examine the emerging trends in biomaterial-based approaches to endochondral bone regeneration, such as the engineering of anatomically shaped templates for bone and osteochondral tissue engineering, the fabrication of mechanically reinforced constructs using emerging three-dimensional bioprinting techniques, and the generation of gene-activated scaffolds, which may accelerate the field towards its ultimate goal of clinically successful bone organ regeneration.
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Affiliation(s)
- E.J. Sheehy
- Tissue Engineering Research Group (TERG), Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, Ireland
| | - D.J. Kelly
- Tissue Engineering Research Group (TERG), Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
- Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Dublin, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, Ireland
| | - F.J. O'Brien
- Tissue Engineering Research Group (TERG), Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
- Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Dublin, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, Ireland
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49
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Affiliation(s)
- Kinam Park
- Purdue University, Biomedical Engineering and Pharmaceutics, West Lafayette, IN 47907, USA.
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50
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Gonzalez-Fernandez T, Rathan S, Hobbs C, Pitacco P, Freeman FE, Cunniffe GM, Dunne NJ, McCarthy HO, Nicolosi V, O'Brien FJ, Kelly DJ. Pore-forming bioinks to enable spatio-temporally defined gene delivery in bioprinted tissues. J Control Release 2019; 301:13-27. [PMID: 30853527 DOI: 10.1016/j.jconrel.2019.03.006] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/02/2019] [Accepted: 03/06/2019] [Indexed: 12/17/2022]
Abstract
The regeneration of complex tissues and organs remains a major clinical challenge. With a view towards bioprinting such tissues, we developed a new class of pore-forming bioink to spatially and temporally control the presentation of therapeutic genes within bioprinted tissues. By blending sacrificial and stable hydrogels, we were able to produce bioinks whose porosity increased with time following printing. When combined with amphipathic peptide-based plasmid DNA delivery, these bioinks supported enhanced non-viral gene transfer to stem cells in vitro. By modulating the porosity of these bioinks, it was possible to direct either rapid and transient (pore-forming bioinks), or slower and more sustained (solid bioinks) transfection of host or transplanted cells in vivo. To demonstrate the utility of these bioinks for the bioprinting of spatially complex tissues, they were next used to zonally position stem cells and plasmids encoding for either osteogenic (BMP2) or chondrogenic (combination of TGF-β3, BMP2 and SOX9) genes within networks of 3D printed thermoplastic fibers to produce mechanically reinforced, gene activated constructs. In vivo, these bioprinted tissues supported the development of a vascularised, bony tissue overlaid by a layer of stable cartilage. When combined with multiple-tool biofabrication strategies, these gene activated bioinks can enable the bioprinting of a wide range of spatially complex tissues.
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Affiliation(s)
- T Gonzalez-Fernandez
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland; Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), Trinity College Dublin and Royal College of Surgeons, Ireland
| | - S Rathan
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland; Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Ireland
| | - C Hobbs
- Advanced Materials and Bioengineering Research Centre (AMBER), Trinity College Dublin and Royal College of Surgeons, Ireland; School of Physics, Trinity College Dublin, Ireland; Centre for Research of Adaptive Nanostructures and Nanodevices, Trinity College Dublin, Ireland
| | - P Pitacco
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland; Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Ireland
| | - F E Freeman
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland; Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Ireland
| | - G M Cunniffe
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland; Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Ireland
| | - N J Dunne
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland; Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), Trinity College Dublin and Royal College of Surgeons, Ireland; Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, Ireland; School of Mechanical and Manufacturing Engineering, Dublin City University, Ireland; School of Pharmacy, Queen's University Belfast, UK
| | - H O McCarthy
- School of Pharmacy, Queen's University Belfast, UK
| | - V Nicolosi
- Advanced Materials and Bioengineering Research Centre (AMBER), Trinity College Dublin and Royal College of Surgeons, Ireland; School of Physics, Trinity College Dublin, Ireland; Centre for Research of Adaptive Nanostructures and Nanodevices, Trinity College Dublin, Ireland
| | - F J O'Brien
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), Trinity College Dublin and Royal College of Surgeons, Ireland; Tissue Engineering Research Group, Dept. of Anatomy, Royal College of Surgeons in, Ireland
| | - D J Kelly
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland; Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), Trinity College Dublin and Royal College of Surgeons, Ireland; Tissue Engineering Research Group, Dept. of Anatomy, Royal College of Surgeons in, Ireland.
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