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Miwa A, Kamiya K. Cell-Penetrating Peptide-Mediated Biomolecule Transportation in Artificial Lipid Vesicles and Living Cells. Molecules 2024; 29:3339. [PMID: 39064917 PMCID: PMC11279660 DOI: 10.3390/molecules29143339] [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: 06/14/2024] [Revised: 07/12/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
Signal transduction and homeostasis are regulated by complex protein interactions in the intracellular environment. Therefore, the transportation of impermeable macromolecules (nucleic acids, proteins, and drugs) that control protein interactions is essential for modulating cell functions and therapeutic applications. However, macromolecule transportation across the cell membrane is not easy because the cell membrane separates the intra/extracellular environments, and the types of molecular transportation are regulated by membrane proteins. Cell-penetrating peptides (CPPs) are expected to be carriers for molecular transport. CPPs can transport macromolecules into cells through endocytosis and direct translocation. The transport mechanism remains largely unclear owing to several possibilities. In this review, we describe the methods for investigating CPP conformation, translocation, and cargo transportation using artificial membranes. We also investigated biomolecular transport across living cell membranes via CPPs. Subsequently, we show not only the biochemical applications but also the synthetic biological applications of CPPs. Finally, recent progress in biomolecule and nanoparticle transportation via CPPs into specific tissues is described from the viewpoint of drug delivery. This review provides the opportunity to discuss the mechanism of biomolecule transportation through these two platforms.
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Affiliation(s)
| | - Koki Kamiya
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Gunma, Japan;
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2
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Yang GD, Ma DS, Ma CY, Bai Y. Research Progress on Cardiac Tissue Construction of Mesenchymal Stem Cells for Myocardial Infarction. Curr Stem Cell Res Ther 2024; 19:942-958. [PMID: 37612870 DOI: 10.2174/1574888x18666230823091017] [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: 03/06/2023] [Revised: 07/13/2023] [Accepted: 07/26/2023] [Indexed: 08/25/2023]
Abstract
Heart failure is still the main complication affecting the prognosis of acute myocardial infarction (AMI), and mesenchymal stem cells (MSCs) are an effective treatment to replace necrotic myocardium and improve cardiac functioning. However, the transplant survival rate of MSCs still presents challenges. In this review, the biological characteristics of MSCs, the progress of mechanism research in the treatment of myocardial infarction, and the advances in improving the transplant survival rate of MSCs in the replacement of necrotic myocardial infarction are systematically described. From a basic to advanced clinical research, MSC transplants have evolved from a pure injection, an exosome injection, the genetic modification of MSCs prior to injection to the cardiac tissue engineering of MSC patch grafting. This study shows that MSCs have wide clinical applications in the treatment of AMI, suggesting improved myocardial tissue creation. A broader clinical application prospect will be explored and developed to improve the survival rate of MSC transplants and myocardial vascularization.
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Affiliation(s)
- Guo-Dong Yang
- Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, 130021, China
| | - Da-Shi Ma
- Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, 130021, China
| | - Chun-Ye Ma
- Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, 130021, China
| | - Yang Bai
- Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, 130021, China
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3
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Potočnik T, Maček Lebar A, Kos Š, Reberšek M, Pirc E, Serša G, Miklavčič D. Effect of Experimental Electrical and Biological Parameters on Gene Transfer by Electroporation: A Systematic Review and Meta-Analysis. Pharmaceutics 2022; 14:pharmaceutics14122700. [PMID: 36559197 PMCID: PMC9786189 DOI: 10.3390/pharmaceutics14122700] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/28/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
The exact mechanisms of nucleic acid (NA) delivery with gene electrotransfer (GET) are still unknown, which represents a limitation for its broader use. Further, not knowing the effects that different experimental electrical and biological parameters have on GET additionally hinders GET optimization, resulting in the majority of research being performed using a trial-and-error approach. To explore the current state of knowledge, we conducted a systematic literature review of GET papers in in vitro conditions and performed meta-analyses of the reported GET efficiency. For now, there is no universal GET strategy that would be appropriate for all experimental aims. Apart from the availability of the required electroporation device and electrodes, the choice of an optimal GET approach depends on parameters such as the electroporation medium; type and origin of cells; and the size, concentration, promoter, and type of the NA to be transfected. Equally important are appropriate controls and the measurement or evaluation of the output pulses to allow a fair and unbiased evaluation of the experimental results. Since many experimental electrical and biological parameters can affect GET, it is important that all used parameters are adequately reported to enable the comparison of results, as well as potentially faster and more efficient experiment planning and optimization.
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Affiliation(s)
- Tjaša Potočnik
- Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, 1000 Ljubljana, Slovenia
| | - Alenka Maček Lebar
- Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, 1000 Ljubljana, Slovenia
| | - Špela Kos
- Department of Experimental Oncology, Institute of Oncology Ljubljana, Zaloška cesta 2, 1000 Ljubljana, Slovenia
| | - Matej Reberšek
- Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, 1000 Ljubljana, Slovenia
| | - Eva Pirc
- Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, 1000 Ljubljana, Slovenia
| | - Gregor Serša
- Department of Experimental Oncology, Institute of Oncology Ljubljana, Zaloška cesta 2, 1000 Ljubljana, Slovenia
| | - Damijan Miklavčič
- Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, 1000 Ljubljana, Slovenia
- Correspondence:
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4
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Dielectrophoretic Manipulation of Cell Transfection Efficiency during Electroporation Using a Center Needle Electrode. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11157015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Long duration electric pulses are frequently used to facilitate DNA electrotransfer into cells and tissues, while electroporation pulses can be combined with electrophoresis to maximize the transfection efficiency. In this work, we present the dielectrophoresis (DEP)-assisted methodology for electrotransfer of plasmid DNA (3.5 kbp pmaxGFP) into mammalian cells (CHO-K1). A prototype of an electroporation cuvette with center needle electrode for DEP-assisted transfection is presented resulting in a 1.4-fold of transfection efficiency increase compared to the electroporation-only procedure (1.4 kV/cm × 100 µs × 8). The efficiency of transfection has been compared between three DEP frequencies of 1, 100, and 1 MHz. Lastly, the effects of exposure time (1, 3, and 5 min) during the DEP application step have been determined. It is concluded that the proposed methodology and exposure setup allow a significant improvement of transfection efficiency and could be used as an alternative to the currently popular electrotransfection techniques.
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5
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Non-viral delivery systems of DNA into stem cells: Promising and multifarious actions for regenerative medicine. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101861] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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6
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Song SY, Hong J, Go S, Lim S, Sohn HS, Kang M, Jung G, Yoon J, Kang ML, Im G, Kim B. Interleukin-4 Gene Transfection and Spheroid Formation Potentiate Therapeutic Efficacy of Mesenchymal Stem Cells for Osteoarthritis. Adv Healthc Mater 2020; 9:e1901612. [PMID: 31977158 DOI: 10.1002/adhm.201901612] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/23/2019] [Indexed: 12/21/2022]
Abstract
Osteoarthritis (OA) is a painful intractable disease that significantly affects patients' quality of life. However, current therapies, such as pain killers and joint replacement surgery, do not lead to cartilage protection. Mesenchymal stem cells (MSCs) have been proposed as an alternative strategy for OA therapy because MSCs can secrete chondroprotective and anti-inflammatory factors. However, interleukin-4 (IL-4), a potent anti-inflammatory cytokine, is barely produced by MSCs, and MSC therapy suffers from rapid MSC death following intra-articular implantation. MSCs in spheroids survive better than naïve MSCs in vitro and in vivo. IL-4-transfected MSCs in spheroids (IL-4 MSC spheroid) show increased chondroprotective and anti-inflammatory effects in an OA chondrocyte model in vitro. Following intra-articular implantation in OA rats, IL-4 MSC spheroids show better cartilage protection and pain relief than naïve MSCs. Thus, IL-4 MSC spheroid may potentiate the therapeutic efficacy of MSCs for OA.
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Affiliation(s)
- Seuk Young Song
- School of Chemical and Biological EngineeringSeoul National University 1 Gwanak‐ro, Gwanak‐gu Seoul 08826 Republic of Korea
| | - Jihye Hong
- Interdisciplinary Program for BioengineeringSeoul National University 1 Gwanak‐ro, Gwanak‐gu Seoul 08826 Republic of Korea
| | - Seukhyeong Go
- Interdisciplinary Program for BioengineeringSeoul National University 1 Gwanak‐ro, Gwanak‐gu Seoul 08826 Republic of Korea
| | - Songhyun Lim
- School of Chemical and Biological EngineeringSeoul National University 1 Gwanak‐ro, Gwanak‐gu Seoul 08826 Republic of Korea
| | - Hee Su Sohn
- School of Chemical and Biological EngineeringSeoul National University 1 Gwanak‐ro, Gwanak‐gu Seoul 08826 Republic of Korea
| | - Mikyung Kang
- Interdisciplinary Program for BioengineeringSeoul National University 1 Gwanak‐ro, Gwanak‐gu Seoul 08826 Republic of Korea
| | - Gun‐Jae Jung
- School of Chemical and Biological EngineeringSeoul National University 1 Gwanak‐ro, Gwanak‐gu Seoul 08826 Republic of Korea
| | - Jeong‐Kee Yoon
- School of Chemical and Biological EngineeringSeoul National University 1 Gwanak‐ro, Gwanak‐gu Seoul 08826 Republic of Korea
| | - Mi Lan Kang
- Department of Orthopaedic SurgeryDongguk University Ilsan Hospital 27 Dongguk‐ro, Ilsandong‐gu Goyang‐si Gyeonggi‐do 10326 Republic of Korea
| | - Gun‐il Im
- Department of Orthopaedic SurgeryDongguk University Ilsan Hospital 27 Dongguk‐ro, Ilsandong‐gu Goyang‐si Gyeonggi‐do 10326 Republic of Korea
| | - Byung‐Soo Kim
- School of Chemical and Biological EngineeringSeoul National University 1 Gwanak‐ro, Gwanak‐gu Seoul 08826 Republic of Korea
- Interdisciplinary Program for BioengineeringSeoul National University 1 Gwanak‐ro, Gwanak‐gu Seoul 08826 Republic of Korea
- Institute of Chemical Processes, Institute of Engineering ResearchSeoul National University 1 Gwanak‐ro, Gwanak‐gu Seoul 08826 Republic of Korea
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7
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Genetically Engineered-MSC Therapies for Non-unions, Delayed Unions and Critical-size Bone Defects. Int J Mol Sci 2019; 20:ijms20143430. [PMID: 31336890 PMCID: PMC6678255 DOI: 10.3390/ijms20143430] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/08/2019] [Accepted: 07/09/2019] [Indexed: 12/21/2022] Open
Abstract
The normal bone regeneration process is a complex and coordinated series of events involving different cell types and molecules. However, this process is impaired in critical-size/large bone defects, with non-unions or delayed unions remaining a major clinical problem. Novel strategies are needed to aid the current therapeutic approaches. Mesenchymal stem/stromal cells (MSCs) are able to promote bone regeneration. Their beneficial effects can be improved by modulating the expression levels of specific genes with the purpose of stimulating MSC proliferation, osteogenic differentiation or their immunomodulatory capacity. In this context, the genetic engineering of MSCs is expected to further enhance their pro-regenerative properties and accelerate bone healing. Herein, we review the most promising molecular candidates (protein-coding and non-coding transcripts) and discuss the different methodologies to engineer and deliver MSCs, mainly focusing on in vivo animal studies. Considering the potential of the MSC secretome for bone repair, this topic has also been addressed. Furthermore, the promising results of clinical studies using MSC for bone regeneration are discussed. Finally, we debate the advantages and limitations of using MSCs, or genetically-engineered MSCs, and their potential as promoters of bone fracture regeneration/repair.
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8
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von der Haar K, Jonczyk R, Lavrentieva A, Weyand B, Vogt P, Jochums A, Stahl F, Scheper T, Blume CA. Electroporation: A Sustainable and Cell Biology Preserving Cell Labeling Method for Adipogenous Mesenchymal Stem Cells. Biores Open Access 2019; 8:32-44. [PMID: 30944770 PMCID: PMC6445215 DOI: 10.1089/biores.2019.0001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Human mesenchymal stem cells derived from adipose tissue (AD-hMSCs) represent a promising source for tissue engineering and are already widely used in cell therapeutic clinical trials. Until today, an efficient and sustainable cell labeling system for cell tracking does not exist. We evaluated transient transfection through electroporation for cell labeling and compared it with lentiviral transduction for AD-hMSCs. In addition, we tested whether nonsense DNA or a reporter gene such as enhanced green fluorescent protein (EGFP) is the more suitable label for AD-hMSCs. Using electroporation, the transfection efficiency reached a maximal level of 44.6 ± 1.1% EGFP-positive cells after selective and expansive cultivation of the mixed MSC population, and was 44.5 ± 1.4% after gene transfer with Cyanin3-marked nonsense-label DNA, which remained stable during 2 weeks of nonselective cultivation (37.2 ± 4.7% positive AD-hMSCs). Electroporation with both nonsense DNA and pEGFP-N1 led to a slight growth retardation of 45.2% and 59.1%, respectively. EGFP-transfected or transduced AD-hMSCs showed a limited adipogenic and osteogenic differentiation capacity, whereas it was almost unaffected in cells electroporated with the nonsense-label DNA. The nonsense DNA was detectable through quantitative real-time polymerase chain reaction for at least 5 weeks/10 passages and in differentiated AD-hMSCs. EGFP-labeled cells were trackable for 24 h in vitro and served as testing cells with new materials for dental implants for 7 days. In contrast, lentivirally transduced AD-hMSCs showed an altered natural immune phenotype of the AD-hMSCs with lowered expression of two cell type defining surface markers (CD44 and CD73) and a relevantly decreased cell growth by 71.8% as assessed by the number of colony-forming units. We suggest electroporation with nonsense DNA as an efficient and long-lasting labeling method for AD-hMSCs with the comparably lowest negative impact on the phenotype or the differentiation capacity of the cells, which may, therefore, be suitable for tissue engineering. In contrast, EGFP transfection by electroporation is efficient but may be more suitable for cell tracking within cell therapies without MSC differentiation procedures. Since current protocols of lentiviral gene transduction include the risk of cell biological alterations, electroporation seems advantageous and sustainable enough for hMSC labeling.
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Affiliation(s)
- Kathrin von der Haar
- Institute of Technical Chemistry, Leibniz University Hannover, Hannover, Germany
| | - Rebecca Jonczyk
- Institute of Technical Chemistry, Leibniz University Hannover, Hannover, Germany
| | - Antonina Lavrentieva
- Institute of Technical Chemistry, Leibniz University Hannover, Hannover, Germany
| | - Birgit Weyand
- Department of Plastic Hand and Reconstructive Surgery, Hannover Medical School Hannover, Hannover, Germany
| | - Peter Vogt
- Department of Plastic Hand and Reconstructive Surgery, Hannover Medical School Hannover, Hannover, Germany
| | - André Jochums
- Institute of Technical Chemistry, Leibniz University Hannover, Hannover, Germany
| | - Frank Stahl
- Institute of Technical Chemistry, Leibniz University Hannover, Hannover, Germany
| | - Thomas Scheper
- Institute of Technical Chemistry, Leibniz University Hannover, Hannover, Germany
| | - Cornelia A. Blume
- Institute of Technical Chemistry, Leibniz University Hannover, Hannover, Germany
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9
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Numerical study of the effect of soft layer properties on bacterial electroporation. Bioelectrochemistry 2017; 123:261-272. [PMID: 29146422 DOI: 10.1016/j.bioelechem.2017.09.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 09/07/2017] [Accepted: 09/07/2017] [Indexed: 11/24/2022]
Abstract
We present a numerical model of electroporation in a gram-positive bacterium, which accounts for the presence of a negatively charged soft polyelectrolyte layer (which may include a periplasmic space, peptidoglycan layer, cilia, flagella, and other surface appendages) surrounding its plasma membrane. We model the ion transport within and outside the soft layer using the soft layer electrokinetics-based Poisson-Nernst-Planck formalism. Additionally, we model the electroporation dynamics on the plasma membrane using the pore nucleation-based electroporation formalism developed by Krassowska and Filev. We find that ion transport within the soft layer (surface conduction), which depends on the relative importance of the soft layer charged group concentration compared to the buffer concentration, significantly alters the transmembrane voltage across the plasma membrane and hence the pore characteristics. Our numerical simulations suggest that surface conduction significantly lowers the pore number in the plasma membrane. This observation is consistent with experimental studies that show that gram-positive bacteria, in general, have lower transformation efficiencies compared to gram-negative bacteria. Our studies highlight a strong dependence of bacterial electroporation on cell envelope properties and buffer conditions, which need to be taken into consideration when designing electroporation protocols.
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10
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Li G, Bonamici N, Dey M, Lesniak MS, Balyasnikova IV. Intranasal delivery of stem cell-based therapies for the treatment of brain malignancies. Expert Opin Drug Deliv 2017; 15:163-172. [PMID: 28895435 DOI: 10.1080/17425247.2018.1378642] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Glioblastoma (GBM) is the most aggressive malignant brain cancer in adults, and its poor prognosis and resistance to the existing standard of care require the development of innovative therapeutic modalities. The local delivery of stem cells as therapeutic carriers against glioma has produced encouraging results, but encounters obstacles with regards to the repeatability and invasiveness of administration. Intranasal delivery of therapeutic stem cells could overcome these obstacles, among others, as a noninvasive and easily repeatable mode of administration. AREAS COVERED This review describes nasal anatomy, routes of stem cell migration, and factors affecting stem cell delivery to hard-to-reach tumors. Furthermore, this review discusses the molecular mechanisms underlying stem cell migration following delivery, as well as possible stem cell effector functions to be considered in combination with intranasal delivery. EXPERT OPINION Further research is necessary to elucidate the dynamics of stem cell effector functions in the context of intranasal delivery and optimize their therapeutic potency. Nonetheless, the technique represents a promising tool against brain cancer and has the potential to be expanded for use against other brain pathologies.
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Affiliation(s)
- Gina Li
- a Department of Neurological Surgery , Feinberg School of Medicine, Northwestern University , Chicago , IL , USA
| | - Nicolas Bonamici
- a Department of Neurological Surgery , Feinberg School of Medicine, Northwestern University , Chicago , IL , USA
| | - Mahua Dey
- b Department of Neurological Surgery , Indiana University , Indianapolis , IN , USA
| | - Maciej S Lesniak
- a Department of Neurological Surgery , Feinberg School of Medicine, Northwestern University , Chicago , IL , USA
| | - Irina V Balyasnikova
- a Department of Neurological Surgery , Feinberg School of Medicine, Northwestern University , Chicago , IL , USA
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11
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Gianulis EC, Casciola M, Xiao S, Pakhomova ON, Pakhomov AG. Electropermeabilization by uni- or bipolar nanosecond electric pulses: The impact of extracellular conductivity. Bioelectrochemistry 2017; 119:10-19. [PMID: 28865240 DOI: 10.1016/j.bioelechem.2017.08.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 07/05/2017] [Accepted: 08/15/2017] [Indexed: 02/03/2023]
Abstract
Cellular effects caused by nanosecond electric pulses (nsEP) can be reduced by an electric field reversal, a phenomenon known as bipolar cancellation. The reason for this cancellation effect remains unknown. We hypothesized that assisted membrane discharge is the mechanism for bipolar cancellation. CHO-K1 cells bathed in high (16.1mS/cm; HCS) or low (1.8mS/cm; LCS) conductivity solutions were exposed to either one unipolar (300-ns) or two opposite polarity (300+300-ns; bipolar) nsEP (4-40kV/cm) with increasing interpulse intervals (0.1-50μs). Time-lapse YO-PRO-1 (YP) uptake revealed enhanced membrane permeabilization in LCS compared to HCS at all tested voltages. The time-dependence of bipolar cancellation was similar in both solutions, using either identical (22kV/cm) or isoeffective nsEP treatments (12 and 32kV/cm for LCS and HCS, respectively). However, cancellation was significantly stronger in LCS when the bipolar nsEP had no, or very short (<1μs), interpulse intervals. Finally, bipolar cancellation was still present with interpulse intervals as long as 50μs, beyond the time expected for membrane discharge. Our findings do not support assisted membrane discharge as the mechanism for bipolar cancellation. Instead they exemplify the sustained action of nsEP that can be reversed long after the initial stimulus.
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Affiliation(s)
- Elena C Gianulis
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA 23508, USA.
| | - Maura Casciola
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA 23508, USA
| | - Shu Xiao
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA 23508, USA; Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, VA 23508, USA
| | - Olga N Pakhomova
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA 23508, USA
| | - Andrei G Pakhomov
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA 23508, USA
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12
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Demonstration of the Protein Involvement in Cell Electropermeabilization using Confocal Raman Microspectroscopy. Sci Rep 2017; 7:40448. [PMID: 28102326 PMCID: PMC5244372 DOI: 10.1038/srep40448] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 12/06/2016] [Indexed: 01/14/2023] Open
Abstract
Confocal Raman microspectroscopy was used to study the interaction between pulsed electric fields and live cells from a molecular point of view in a non-invasive and label-free manner. Raman signatures of live human adipose-derived mesenchymal stem cells exposed or not to pulsed electric fields (8 pulses, 1 000 V/cm, 100 μs, 1 Hz) were acquired at two cellular locations (nucleus and cytoplasm) and two spectral bands (600–1 800 cm−1 and 2 800–3 100 cm−1). Vibrational modes of proteins (phenylalanine and amide I) and lipids were found to be modified by the electropermeabilization process with a statistically significant difference. The relative magnitude of four phenylalanine peaks decreased in the spectra of the pulsed group. On the contrary, the relative magnitude of the amide I band at 1658 cm−1 increased by 40% when comparing pulsed and control group. No difference was found between the control and the pulsed group in the high wavenumber spectral band. Our results reveal the modification of proteins in living cells exposed to pulsed electric fields by means of confocal Raman microspectroscopy.
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13
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Li SJ, Luo Y, Zhang LM, Yang W, Zhang GG. Targeted introduction and effective expression of hFIX at the AAVS1 locus in mesenchymal stem cells. Mol Med Rep 2017; 15:1313-1318. [PMID: 28112377 PMCID: PMC5367337 DOI: 10.3892/mmr.2017.6131] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 12/12/2016] [Indexed: 01/13/2023] Open
Abstract
Hemophilia B occurs due to a deficiency in human blood coagulation factor IX (hFIX). Currently, no effective treatment for hemophilia B has been identified, and gene therapy has been considered the most appropriate treatment. Mesenchymal stem cells (MSCs) have homing abilities and low immunogenicity, and therefore they may be potential cell carriers for targeted drug delivery to lesional tissues. The present study constructed an adeno‑associated virus integration site 1 (AAVS1)‑targeted vector termed AAVS1‑green fluorescent protein (GFP)‑hFIX and a zinc finger nuclease (ZFN) expression vector. Nucleofection was used to co‑transfect the targeting vector and the ZFN expression vector into human MSCs. The GFP‑positive cells were selected using flow cytometry. Site‑specific integration clones were obtained following the monoclonal culture, subsequent detections were performed using polymerase chain reaction and Southern blotting. Following the confirmation of stem cell traits of the site‑specific integration MSCs, the in vivo and in vitro expression levels of hFIX were detected. The results demonstrated that the hFIX gene was successfully transfected into the AAVS1 locus in human MSCs. The clones with the site‑specific integration retained stem cell traits of the MSCs. In addition, hFIX was effectively expressed in vivo and in vitro. No significant differences in expression levels were identified among the individual clones. In conclusion, the present study demonstrated that the exogenous gene hFIX was effectively expressed following site‑specific targeting into the AAVS1 locus in MSCs; therefore, MSCs may be used as potential cell carriers for gene therapy of hemophilia B.
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Affiliation(s)
- Shu-Jun Li
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Ying Luo
- Department of Geriatric Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Le-Meng Zhang
- Department of Thoracic Medicine, Hunan Cancer Hospital Affiliated to Xiangya Medical School, Central South University, Changsha, Hunan 410013, P.R. China
| | - Wei Yang
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410000, P.R. China
| | - Guo-Gang Zhang
- Department of Cardiovascular Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410000, P.R. China
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14
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Pasquet L, Bellard E, Rols MP, Golzio M, Teissie J. Post-pulse addition of trans-cyclohexane-1,2-diol improves electrotransfer mediated gene expression in mammalian cells. Biochem Biophys Rep 2016; 7:287-294. [PMID: 28955917 PMCID: PMC5613639 DOI: 10.1016/j.bbrep.2016.07.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 07/08/2016] [Accepted: 07/14/2016] [Indexed: 12/17/2022] Open
Abstract
Electric field mediated gene transfer is facing a problem in expression yield due to the poor transfer across the nuclear envelope. Trans-cyclohexane-1,2-diol (TCHD) was shown to significantly increase chemically mediated transfection by collapsing the permeability barrier of the nuclear pore complex. We indeed observed a significant increase in expression by electrotransfer when cells are treated post pulse by a low non toxic concentration of TCHD. This was obtained for different pulsing conditions, cell strains and plasmid constructs. An interesting improvement in cell viability can be obtained. This can significantly enhance the non-viral gene electrical delivery. Trans-cyclohexane-1,2-diol (TCHD) collapses the permeability barrier of the nuclear pore complex. TCHD improves expression in gene electrotransfer. Post pulse TCHD addition is the most effective protocol. TCHD does not affect the cell viability when coupled to electrotransfer.
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Affiliation(s)
- L Pasquet
- Centre National de la Recherche Scientifique, Institut de Pharmacologie et de Biologie Structurale, BP64182, 205 route de Narbonne, F-31077 Toulouse, France.,Centre National de la Recherche Scientifique, Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
| | - E Bellard
- Centre National de la Recherche Scientifique, Institut de Pharmacologie et de Biologie Structurale, BP64182, 205 route de Narbonne, F-31077 Toulouse, France.,Centre National de la Recherche Scientifique, Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
| | - M P Rols
- Centre National de la Recherche Scientifique, Institut de Pharmacologie et de Biologie Structurale, BP64182, 205 route de Narbonne, F-31077 Toulouse, France.,Centre National de la Recherche Scientifique, Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
| | - M Golzio
- Centre National de la Recherche Scientifique, Institut de Pharmacologie et de Biologie Structurale, BP64182, 205 route de Narbonne, F-31077 Toulouse, France.,Centre National de la Recherche Scientifique, Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
| | - J Teissie
- Centre National de la Recherche Scientifique, Institut de Pharmacologie et de Biologie Structurale, BP64182, 205 route de Narbonne, F-31077 Toulouse, France.,Centre National de la Recherche Scientifique, Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
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15
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Impact of external medium conductivity on cell membrane electropermeabilization by microsecond and nanosecond electric pulses. Sci Rep 2016; 6:19957. [PMID: 26829153 PMCID: PMC4734290 DOI: 10.1038/srep19957] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 11/19/2015] [Indexed: 11/13/2022] Open
Abstract
The impact of external medium conductivity on the efficiency of the reversible permeabilisation caused by pulsed electric fields was investigated. Pulses of 12 ns, 102 ns or 100 μs were investigated. Whenever permeabilisation could be detected after the delivery of one single pulse, media of lower conductivity induced more efficient reversible permeabilisation and thus independently of the medium composition. Effect of medium conductivity can however be hidden by some saturation effects, for example when pulses are cumulated (use of trains of 8 pulses) or when the detection method is not sensitive enough. This explains the contradicting results that can be found in the literature. The new data are complementary to those of one of our previous study in which an opposite effect of the conductivity was highlighted. It stresses that the conductivity of the medium influences the reversible permeabilization by several ways. Moreover, these results clearly indicate that electropermeabilisation does not linearly depend on the energy delivered to the cells.
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16
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AYDIN S, YALVAÇ ME, ÖZCAN F, ŞAHİN F. Pluronic PF68 increases transfection efficiency in electroporationof mesenchymal stem cells. Turk J Biol 2016. [DOI: 10.3906/biy-1503-55] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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17
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Xiao JQ, Shi XL, Yuan XW, Ding YT. Development of human bone marrow derived cells lines stably expressing Tet regulated hepatocyte growth factor or fibroblast growth factor 4 gene. Shijie Huaren Xiaohua Zazhi 2015; 23:4317-4325. [DOI: 10.11569/wcjd.v23.i27.4317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To develop human bone marrow derived cells lines stably expressing Tet regulated hepatocyte growth factor (HGF) or fibroblast growth factor 4 (FGF4) gene.
METHODS: HGF and FGF4 genes were synthesized and then cloned into a lentiviral vector to result in plenti6.3/TO-HGF and plenti6.3/TO-FGF4, respectively. Lenti3.3/TR was transfected into UE7T-13 cells to develop a UE7T-13-TR cell line possessing Tet-on gene swift. Then, plenti6.3/TO-HGF and plenti6.3/TO-FGF4 were used to transfect UE7T-13-TR cell to result in UE7T-13-TR-HGF cell line that could stably express Tet regulated HGF and UE7T-13-TR-FGF4 cell line that could stably express Tet regulated FGF4. The expression of target genes was detected by Q-PCR, and the levels and secretion of proteins were detected by Western blot and ELISA.
RESULTS: We successfully developed UE7T-13-TR-HGF and UE7T-13-TR-FGF4 cell lines. Q-PCR analysis verified that the expression of the HGF gene in UE7T-13-TR-HGF in the presence of Tet was 78-fold higher than that in the absence of Tet, and the fold change for FGF4 was more than 20 thousand folds. Western blot and ELISA analyses verified that HGF and FGF4 proteins could be synthesized and secreted outside the cell membrane.
CONCLUSION: We have successfully developed UE7T-13-TR-HGF and UE7T-13-TR-FGF4 cell lines through lentiviral transfection, which lays a foundation for further study.
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18
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Silve A, Leray I, Leguèbe M, Poignard C, Mir LM. Cell membrane permeabilization by 12-ns electric pulses: Not a purely dielectric, but a charge-dependent phenomenon. Bioelectrochemistry 2015; 106:369-78. [PMID: 26138342 DOI: 10.1016/j.bioelechem.2015.06.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 06/03/2015] [Accepted: 06/10/2015] [Indexed: 12/12/2022]
Abstract
Electric pulses of a few nanoseconds in duration can induce reversible permeabilization of cell membrane and cell death. Whether these effects are caused by ionic or purely dielectric phenomena is still discussed. We address this question by studying the impact of conductivity of the pulsing buffer on the effect of pulses of 12 ns and 3.2 MV/m on the DC-3F mammalian cell line. When pulses were applied in a high-conductivity medium (1.5 S/m), cells experienced both reversible electropermeabilization and cell death. On the contrary, no effect was observed in the low-conductivity medium (0.1 S/m). Possible artifacts due to differences in viscosity, temperature increase or electrochemical reactions were excluded. The influence of conductivity reported here suggests that charges still play a role, even for 12-ns pulses. All theoretical models agree with this experimental observation, since all suggest that only high-conductivity medium can induce a transmembrane voltage high enough to induce pore creation, in turn. However, most models fail to describe why pulse accumulation is experimentally required to observe biological effects. They mostly show no increase of permeabilization with accumulation of pulses. Currently, only one model properly describes pulse accumulation by modeling diffusion of the altered membrane regions.
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Affiliation(s)
- Aude Silve
- Institute for Pulsed Power and Microwave Technology, Karlsruhe Institute of Technology, Germany; CNRS, Villejuif, Laboratoire de Vectorologie et Thérapeutiques Anti-cancéreuses, UMR 8203, Villejuif 94805, France; Univ Paris-Sud, Laboratoire de Vectorologie et Thérapeutiques Anti-cancéreuses, UMR 8203, Villejuif 94805, France; Gustave Roussy, Laboratoire de Vectorologie et Thérapeutiques Anti-cancéreuses, UMR 8203, Villejuif 94805, France.
| | - Isabelle Leray
- CNRS, Villejuif, Laboratoire de Vectorologie et Thérapeutiques Anti-cancéreuses, UMR 8203, Villejuif 94805, France; Univ Paris-Sud, Laboratoire de Vectorologie et Thérapeutiques Anti-cancéreuses, UMR 8203, Villejuif 94805, France; Gustave Roussy, Laboratoire de Vectorologie et Thérapeutiques Anti-cancéreuses, UMR 8203, Villejuif 94805, France
| | - Michael Leguèbe
- Inria Bordeaux, CNRS UMR 5251, Université de Bordeaux, France
| | - Clair Poignard
- Inria Bordeaux, CNRS UMR 5251, Université de Bordeaux, France
| | - Lluis M Mir
- CNRS, Villejuif, Laboratoire de Vectorologie et Thérapeutiques Anti-cancéreuses, UMR 8203, Villejuif 94805, France; Univ Paris-Sud, Laboratoire de Vectorologie et Thérapeutiques Anti-cancéreuses, UMR 8203, Villejuif 94805, France; Gustave Roussy, Laboratoire de Vectorologie et Thérapeutiques Anti-cancéreuses, UMR 8203, Villejuif 94805, France.
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19
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Gene Electrotransfer of Canine Interleukin 12 into Canine Melanoma Cell Lines. J Membr Biol 2015; 248:909-17. [PMID: 25840833 DOI: 10.1007/s00232-015-9800-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 03/26/2015] [Indexed: 10/23/2022]
Abstract
A gene electrotransfer (GET) of interleukin 12 (IL-12) had already given good results when treating tumors in human and veterinary clinical trials. So far, plasmids used in veterinary clinical studies encoded a human or a feline IL-12 and an ampicillin resistance gene, which is not recommended by the regulatory agencies to be used in clinical trials. Therefore, the aim of the current study was to construct the plasmid encoding a canine IL-12 with kanamycin antibiotic resistance gene that could be used in veterinary clinical oncology. The validation of the newly constructed plasmid was carried out on canine malignant melanoma cells, which have not been used in GET studies so far, and on human malignant melanoma cells. Canine and human malignant melanoma cell lines were transfected with plasmid encoding enhanced green fluorescence protein at different pulse parameter conditions to determine the transfection efficiency and cell survival. The IL-12 expression of the most suitable conditions for GET of the plasmid encoding canine IL-12 was determined at mRNA level by the qRT-PCR and at protein level with the ELISpot assay. The obtained results showed that the newly constructed plasmid encoding canine IL-12 had similar or even higher expression capacity than the plasmid encoding human IL-12. Therefore, it represents a promising therapeutic plasmid for further IL-12 gene therapy in clinical studies for spontaneous canine tumors. Additionally, it also meets the main regulatory agencies' (FDA and EMA) criteria.
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20
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Zhang P, Zhao G, Kang X, Su L. Effects of lateral ventricular transplantation of bone marrow-derived mesenchymal stem cells modified with brain-derived neurotrophic factor gene on cognition in a rat model of Alzheimer's disease. Neural Regen Res 2015; 7:245-50. [PMID: 25806063 PMCID: PMC4353094 DOI: 10.3969/j.issn.1673-5374.2012.04.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2011] [Accepted: 12/22/2011] [Indexed: 12/18/2022] Open
Abstract
In the present study, transplantation of bone marrow-derived mesenchymal stem cells modified with brain-derived neurotrophic factor gene into the lateral ventricle of a rat model of Alzheimer's disease, resulted in significant attenuation of nerve cell damage in the hippocampal CA1 region. Furthermore, brain-derived neurotrophic factor and tyrosine kinase B mRNA and protein levels were significantly increased, and learning and memory were significantly improved. Results indicate that transplantation of bone marrow-derived mesenchymal stem cells modified with brain-derived neurotrophic factor gene can significantly improve cognitive function in a rat model of Alzheimer's disease, possibly by increasing the levels of brain-derived neurotrophic factor and tyrosine kinase B in the hippocampus.
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Affiliation(s)
- Ping Zhang
- Department of Neurology, Affiliated Hospital of Hebei University, Baoding 071000, Hebei Province, China
| | - Gangyong Zhao
- Research Center for Bioengineering Technology, Hebei University, Baoding 071000, Hebei Province, China
| | - Xianjiang Kang
- College of Life Science, Hebei University, Baoding 071000, Hebei Province, China
| | - Likai Su
- Department of Neurology, Affiliated Hospital of Hebei University, Baoding 071000, Hebei Province, China
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21
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Muroski ME, Morgan TJ, Levenson CW, Strouse GF. A gold nanoparticle pentapeptide: gene fusion to induce therapeutic gene expression in mesenchymal stem cells. J Am Chem Soc 2014; 136:14763-71. [PMID: 25198921 DOI: 10.1021/ja505190q] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mesenchymal stem cells (MSC) have been identified as having great potential as autologous cell therapeutics to treat traumatic brain injury and spinal injury as well as neuronal and cardiac ischemic events. All future clinical applications of MSC cell therapies must allow the MSC to be harvested, transfected, and induced to express a desired protein or selection of proteins to have medical benefit. For the full potential of MSC cell therapy to be realized, it is desirable to systematically alter the protein expression of therapeutically beneficial biomolecules in harvested MSC cells with high fidelity in a single transfection event. We have developed a delivery platform on the basis of the use of a solid gold nanoparticle that has been surface modified to produce a fusion containing a zwitterionic, pentapeptide designed from Bax inhibiting peptide (Ku70) to enhance cellular uptake and a linearized expression vector to induce enhanced expression of brain-derived neurotrophic factor (BDNF) in rat-derived MSCs. Ku70 is observed to effect >80% transfection following a single treatment of femur bone marrow isolated rat MSCs with efficiencies for the delivery of a 6.6 kbp gene on either a Au nanoparticle (NP) or CdSe/ZnS quantum dot (QD). Gene expression is observed within 4 d by optical measurements, and secretion is observed within 10 d by Western Blot analysis. The combination of being able to selectively engineer the NP, to colocalize biological agents, and to enhance the stability of those agents has provided the strong impetus to utilize this novel class of materials to engineer primary MSCs.
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Affiliation(s)
- Megan E Muroski
- Department of Chemistry and Biochemistry, 95 Chieftan Way, Florida State University , Tallahassee, Florida 32306-4390, United States
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22
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Abdul Halim NSS, Fakiruddin KS, Ali SA, Yahaya BH. A comparative study of non-viral gene delivery techniques to human adipose-derived mesenchymal stem cell. Int J Mol Sci 2014; 15:15044-60. [PMID: 25162825 PMCID: PMC4200830 DOI: 10.3390/ijms150915044] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 06/17/2014] [Accepted: 07/10/2014] [Indexed: 01/08/2023] Open
Abstract
Mesenchymal stem cells (MSCs) hold tremendous potential for therapeutic use in stem cell-based gene therapy. Ex vivo genetic modification of MSCs with beneficial genes of interest is a prerequisite for successful use of stem cell-based therapeutic applications. However, genetic manipulation of MSCs is challenging because they are resistant to commonly used methods to introduce exogenous DNA or RNA. Herein we compared the effectiveness of several techniques (classic calcium phosphate precipitation, cationic polymer, and standard electroporation) with that of microporation technology to introduce the plasmid encoding for angiopoietin-1 (ANGPT-1) and enhanced green fluorescent protein (eGFP) into human adipose-derived MSCs (hAD-MSCs). The microporation technique had a higher transfection efficiency, with up to 50% of the viable hAD-MSCs being transfected, compared to the other transfection techniques, for which less than 1% of cells were positive for eGFP expression following transfection. The capability of cells to proliferate and differentiate into three major lineages (chondrocytes, adipocytes, and osteocytes) was found to be independent of the technique used for transfection. These results show that the microporation technique is superior to the others in terms of its ability to transfect hAD-MSCs without affecting their proliferation and differentiation capabilities. Therefore, this study provides a foundation for the selection of techniques when using ex vivo gene manipulation for cell-based gene therapy with MSCs as the vehicle for gene delivery.
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Affiliation(s)
| | - Kamal Shaik Fakiruddin
- Stem Cell Laboratory, Haematology Unit, Cancer Research Centre, Institute for Medical Research (IMR), Jalan Pahang 50588, Malaysia.
| | - Syed Atif Ali
- Cluster for Oncological and Radiological Sciences, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Penang 13200, Malaysia.
| | - Badrul Hisham Yahaya
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Penang 13200, Malaysia.
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23
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Sridhara V, Joshi R. Evaluations of a mechanistic hypothesis for the influence of extracellular ions on electroporation due to high-intensity, nanosecond pulsing. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:1793-800. [DOI: 10.1016/j.bbamem.2014.03.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 03/17/2014] [Accepted: 03/18/2014] [Indexed: 10/25/2022]
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24
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How medium osmolarity influences dielectrophoretically assisted on-chip electrofusion. Bioelectrochemistry 2014; 100:27-35. [PMID: 25012938 DOI: 10.1016/j.bioelechem.2014.05.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 05/23/2014] [Accepted: 05/27/2014] [Indexed: 12/11/2022]
Abstract
Cells submitted to an electric field gradient experience dielectrophoresis. Such a force is useful for pairing cells prior to electrofusion. The latter event is induced by the application of electric field pulses leading to membrane fusion while cells are in physical contact. Nevertheless, the efficiency of dielectrophoretic pairing and electrofusion of cells are highly dependent on medium properties (osmolarity and conductivity). In this paper, we examine the effect of medium osmolarity on volume, viability and electrical properties of cells. Then we characterize in real time the impact of electropermeabilization of cells on their dielectrophoretic response. To do so, a microfluidic device, inducing particular field topologies is used. These real time observations are correlated to numerical analysis of the Clausius-Mossotti factor. Taking into account the identified changes, an electrofusion protocol adequate to the optimal medium (100 mOsm, 0.03 S/m) is defined. Up to 75% simultaneous binuclear rapid electrofusions were achieved and monitored with average membrane fusion duration lower than 12s.
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25
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Kennedy SM, Aiken EJ, Beres KA, Hahn AR, Kamin SJ, Hagness SC, Booske JH, Murphy WL. Cationic peptide exposure enhances pulsed-electric-field-mediated membrane disruption. PLoS One 2014; 9:e92528. [PMID: 24671150 PMCID: PMC3966810 DOI: 10.1371/journal.pone.0092528] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Accepted: 02/24/2014] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND The use of pulsed electric fields (PEFs) to irreversibly electroporate cells is a promising approach for destroying undesirable cells. This approach may gain enhanced applicability if the intensity of the PEF required to electrically disrupt cell membranes can be reduced via exposure to a molecular deliverable. This will be particularly impactful if that reduced PEF minimally influences cells that are not exposed to the deliverable. We hypothesized that the introduction of charged molecules to the cell surfaces would create regions of enhanced transmembrane electric potential in the vicinity of each charged molecule, thereby lowering the PEF intensity required to disrupt the plasma membranes. This study will therefore examine if exposure to cationic peptides can enhance a PEF's ability to disrupt plasma membranes. METHODOLOGY/PRINCIPAL FINDINGS We exposed leukemia cells to 40 μs PEFs in media containing varying concentrations of a cationic peptide, polyarginine. We observed the internalization of a membrane integrity indicator, propidium iodide (PI), in real time. Based on an individual cell's PI fluorescence versus time signature, we were able to determine the relative degree of membrane disruption. When using 1-2 kV/cm, exposure to >50 μg/ml of polyarginine resulted in immediate and high levels of PI uptake, indicating severe membrane disruption, whereas in the absence of peptide, cells predominantly exhibited signatures indicative of no membrane disruption. Additionally, PI entered cells through the anode-facing membrane when exposed to cationic peptide, which was theoretically expected. CONCLUSIONS/SIGNIFICANCE Exposure to cationic peptides reduced the PEF intensity required to induce rapid and irreversible membrane disruption. Critically, peptide exposure reduced the PEF intensities required to elicit irreversible membrane disruption at normally sub-electroporation intensities. We believe that these cationic peptides, when coupled with current advancements in cell targeting techniques will be useful tools in applications where targeted destruction of unwanted cell populations is desired.
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Affiliation(s)
- Stephen M. Kennedy
- School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts, United States of America
- Department of Electrical and Computer Engineering, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Erik J. Aiken
- Department of Electrical and Computer Engineering, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Kaytlyn A. Beres
- Department of Electrical and Computer Engineering, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Adam R. Hahn
- Department of Electrical and Computer Engineering, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Samantha J. Kamin
- Department of Electrical and Computer Engineering, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Susan C. Hagness
- Department of Electrical and Computer Engineering, University of Wisconsin, Madison, Wisconsin, United States of America
| | - John H. Booske
- Department of Electrical and Computer Engineering, University of Wisconsin, Madison, Wisconsin, United States of America
| | - William L. Murphy
- Department of Biomedical Engineering, University of Wisconsin, Madison, Wisconsin, United States of America
- Department of Orthopedics and Rehabilitation, University of Wisconsin, Madison, Wisconsin, United States of America
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26
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Different Incubation Times of Cells After Gene Electrotransfer in Fetal Bovine Serum Affect Cell Viability, but Not Transfection Efficiency. J Membr Biol 2014; 247:421-8. [DOI: 10.1007/s00232-014-9649-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 03/06/2014] [Indexed: 12/21/2022]
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27
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Bmp 2 and bmp 7 induce odonto- and osteogenesis of human tooth germ stem cells. Appl Biochem Biotechnol 2014; 172:3016-25. [PMID: 24477555 DOI: 10.1007/s12010-013-0706-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Accepted: 12/25/2013] [Indexed: 01/01/2023]
Abstract
Bone morphogenetic proteins (BMPs) initiate, promote, and maintain odontogenesis and osteogenesis. In this study, we studied the effect of bone morphogenic protein 2 (BMP 2) and bone morphogenic protein 7 (BMP 7) as differentiation inducers in tooth and bone regeneration. We compared the effect of BMP 2 and BMP 7 on odontogenic and osteogenic differentiation of human tooth germ stem cells (hTGSCs). Third molar-derived hTGSCs were characterized with mesenchymal stem cell surface markers by flow cytometry. BMP 2 and BMP 7 were transfected into hTGSCs and the cells were seeded onto six-well plates. One day after the transfection, hTGSCs were treated with odontogenic and osteogenic mediums for 14 days. For confirmation of odontogenic and osteogenic differentiation, mRNA levels of BMP2, BMP 7, collagen type 1 (COL1A), osteocalsin (OCN), and dentin sialophosphoprotein (DSPP) genes were measured by quantitative real-time PCR. In addition to this, immunocytochemistry was performed by odontogenic and osteogenic antibodies and mineralization obtained by von Kossa staining. Our results showed that the BMP 2 and BMP 7 both promoted odontogenic and osteogenic differentiation of hTGSCs. Data indicated that BMP 2 treatment and BMP 7 treatment induce odontogenic differentiation without affecting each other, whereas they induce osteogenic differentiation by triggering expression of each other. These findings provide a feasible tool for tooth and bone tissue engineering.
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28
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Lai WF. In vivonucleic acid delivery with PEI and its derivatives: current status and perspectives. Expert Rev Med Devices 2014; 8:173-85. [DOI: 10.1586/erd.10.83] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Abstract
Cyclodextrins (CDs) are naturally occurring cyclic oligosaccharides. They consist of (α-1,4)-linked glucose units, and possess a basket-shaped topology with an "inner-outer" amphiphilic character. Over the years, substantial efforts have been undertaken to investigate the possible use of CDs in drug delivery and controlled drug release, yet the potential of CDs in gene delivery has received comparatively less discussion in the literature. In this article, we will first discuss the properties of CDs for gene delivery, followed by a synopsis of the use of CDs in development and modification of non-viral gene carriers. Finally, areas that are noteworthy in CD-based gene delivery will be highlighted for future research. Due to the application prospects of CDs, it is anticipated that CDs will continue to emerge as an important tool for vector development, and will play significant roles in facilitating non-viral gene delivery in the forthcoming decades.
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Affiliation(s)
- Wing-Fu Lai
- Division in Anatomy and Developmental Biology, Department of Oral Biology, College of Dentistry, Yonsei University, Seoul, Republic of Korea.
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30
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Liew A, André FM, Lesueur LL, De Ménorval MA, O'Brien T, Mir LM. Robust, efficient, and practical electrogene transfer method for human mesenchymal stem cells using square electric pulses. Hum Gene Ther Methods 2013; 24:289-97. [PMID: 23931158 DOI: 10.1089/hgtb.2012.159] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Mesenchymal stem cells (MSCs) are multipotent nonhematopoietic cells with the ability to differentiate into various specific cell types, thus holding great promise for regenerative medicine. Early clinical trials have proven that MSC-based therapy is safe, with possible efficacy in various diseased states. Moreover, genetic modification of MSCs to improve their function can be safely achieved using electrogene transfer. We previously achieved transfection efficiencies of up to 32% with preserved viability in rat MSCs. In this study, we further improved the transfection efficiency and transgene expression in human MSCs (hMSCs), while preserving the cells viability and ability to differentiate into osteoblasts and adipocytes by increasing the plasmid concentration and altering the osmotic pressure of the electrotransfer buffer. Using a square-wave electric pulse generator, we achieved a transfection efficiency of more than 80%, with around 70% viability and a detectable transgene expression of up to 30 days. Moreover, we demonstrated that this transfection efficiency can be reproduced reliably on two different sources of hMSCs: the bone marrow and adipose tissue. We also showed that there was no significant donor variability in terms of their transfection efficiency and viability. The cell confluency before electrotransfer had no significant effect on the transfection efficiency and viability. Cryopreservation of transfected cells maintained their transgene expression and viability upon thawing. In summary, we are reporting a robust, safe, and efficient protocol of electrotransfer for hMSCs with several practical suggestions for an optimal use of genetically engineered hMSCs for clinical application.
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Affiliation(s)
- Aaron Liew
- 1 Regenerative Medicine Institute, National Centre for Biomedical Engineering Science, National University of Ireland Galway , Galway, Ireland
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31
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Wegman F, Oner FC, Dhert WJA, Alblas J. Non-viral gene therapy for bone tissue engineering. Biotechnol Genet Eng Rev 2013; 29:206-20. [PMID: 24568281 DOI: 10.1080/02648725.2013.801227] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The possibilities of using gene therapy for bone regeneration have been extensively investigated. Improvements in the design of new transfection agents, combining vectors and delivery/release systems to diminish cytotoxicity and increase transfection efficiencies have led to several successful in vitro, ex vivo and in vivo strategies. These include growth factor or short interfering ribonucleic acid (siRNA) delivery, or even enzyme replacement therapies, and have led to increased osteogenic differentiation and bone formation in vivo. These results provide optimism to consider use in humans with some of these gene-delivery strategies in the near future.
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Affiliation(s)
- Fiona Wegman
- a Department of Orthopaedics , UMC Utrecht , Utrecht , The Netherlands
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32
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Nonviral gene targeting at rDNA locus of human mesenchymal stem cells. BIOMED RESEARCH INTERNATIONAL 2013; 2013:135189. [PMID: 23762822 PMCID: PMC3666425 DOI: 10.1155/2013/135189] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 04/18/2013] [Indexed: 01/01/2023]
Abstract
Background. Genetic modification, such as the addition of exogenous genes to the MSC genome, is crucial to their use as cellular vehicles. Due to the risks associated with viral vectors such as insertional mutagenesis, the safer nonviral vectors have drawn a great deal of attention. Methods. VEGF, bFGF, vitamin C, and insulin-transferrin-selenium-X were supplemented in the MSC culture medium. The cells' proliferation and survival capacity was measured by MTT, determination of the cumulative number of cells, and a colony-forming efficiency assay. The plasmid pHr2-NL was constructed and nucleofected into MSCs. The recombinants were selected using G418 and characterized using PCR and Southern blotting. Results. BFGF is critical to MSC growth and it acted synergistically with vitamin C, VEGF, and ITS-X, causing the cells to expand significantly. The neomycin gene was targeted to the rDNA locus of human MSCs using a nonviral human ribosomal targeting vector. The recombinant MSCs retained multipotential differentiation capacity, typical levels of hMSC surface marker expression, and a normal karyotype, and none were tumorigenic in nude mice. Conclusions. Exogenous genes can be targeted to the rDNA locus of human MSCs while maintaining the characteristics of MSCs. This is the first nonviral gene targeting of hMSCs.
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Abstract
Target gene delivery is needed to induce cellular differentiation or a specific therapeutic effect. Electroporation is a relatively safe and simple technique to deliver nucleic acids to the cell that acts by rendering cells transiently permeable using short periods of high voltage. In stem cell research, human dental pulp stem cells (hDPSCS) are highly accessible, and they exhibit broad differentiation potential. Until now, no studies have attempted to optimize electroporation parameters for DPSCs with respect to transfection efficiency and viability. In this study, we aimed to optimize transfection of DPSCs through varying different electroporation parameters, including voltage, mode of pulsation, and the number of pulses. As positive control, we used commonly utilized the chemical transfection reagents Lipofectamine 2000 and FuGene 6. In addition, we used our newly optimized transfection conditions to transfect hDPSCs with a functional chondrogenic transgene. We obtained higher transfection efficiency and cell viability with these electroporation conditions compared to controls. The highest transfection efficiency (63.81±4.72%) was achieved with 100 V, 20 msec, one-pulse square-wave condition. Among chemical transfection groups, FuGene 6 showed the highest cell viability at all tested transfection ratios, while Lipofectamine 2000 showed the highest transfection efficiency (19.23±3.19%) using 1:1 DNA (μg):Lipofectamine (μL). Transfected DPSCs functionally expressed the transforming growth factor β-3 chondrogenic transgene on the mRNA level as detected by real-time polymerase chain reaction and on the protein level as detected by Western blot analysis. An increase in various chondrogenic markers was also found when studying mRNA expression in transfected cells. In conclusion, the results of our study demonstrate optimal electroporation and chemical transfection reagent conditions for hDPSCs, and, subsequently, we provide proof of concept for expression of a functional gene using those conditions. These results demonstrate a widened scope for use of DPSCs in various tissue engineering applications.
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Affiliation(s)
- Ahmed Rizk
- Department of Orthodontics, Faculty of Dentistry, The University of Hong Kong , Hong Kong, China
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34
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Im GI. Nonviral gene transfer strategies to promote bone regeneration. J Biomed Mater Res A 2013; 101:3009-18. [PMID: 23554051 DOI: 10.1002/jbm.a.34576] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 01/02/2013] [Indexed: 11/10/2022]
Abstract
Despite the inherent ability of bone to regenerate itself, there are a number of clinical situations in which complete bone regeneration fails to occur. In view of shortcomings of conventional treatment, gene therapy may have a place in cases of critical-size bone loss that cannot be properly treated with current medical or surgical treatment. The purpose of this review is to provide an overview of gene therapy in general, nonviral techniques of gene transfer including physical and chemical methods, RNA-based therapy, therapeutic genes to be transferred for bone regeneration, route of application including ex vivo application, and direct gene therapy approaches to regenerate bone.
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Affiliation(s)
- Gun-Il Im
- Department of Orthopaedics, Dongguk University Ilsan Hospital, Korea
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35
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Dwivedi PP, Anderson PJ, Powell BC. Development of an efficient, non-viral transfection method for studying gene function and bone growth in human primary cranial suture mesenchymal cells reveals that the cells respond to BMP2 and BMP3. BMC Biotechnol 2012; 12:45. [PMID: 22857382 PMCID: PMC3431223 DOI: 10.1186/1472-6750-12-45] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 07/25/2012] [Indexed: 01/05/2023] Open
Abstract
Background Achieving efficient introduction of plasmid DNA into primary cultures of mammalian cells is a common problem in biomedical research. Human primary cranial suture cells are derived from the connective mesenchymal tissue between the bone forming regions at the edges of the calvarial plates of the skull. Typically they are referred to as suture mesenchymal cells and are a heterogeneous population responsible for driving the rapid skull growth that occurs in utero and postnatally. To better understand the molecular mechanisms involved in skull growth, and in abnormal growth conditions, such as craniosynostosis, caused by premature bony fusion, it is essential to be able to easily introduce genes into primary bone forming cells to study their function. Results A comparison of several lipid-based techniques with two electroporation-based techniques demonstrated that the electroporation method known as nucleofection produced the best transfection efficiency. The parameters of nucleofection, including cell number, amount of DNA and nucleofection program, were optimized for transfection efficiency and cell survival. Two different genes and two promoter reporter vectors were used to validate the nucleofection method and the responses of human primary suture mesenchymal cells by fluorescence microscopy, RT-PCR and the dual luciferase assay. Quantification of bone morphogenetic protein (BMP) signalling using luciferase reporters demonstrated robust responses of the cells to both osteogenic BMP2 and to the anti-osteogenic BMP3. Conclusions A nucleofection protocol has been developed that provides a simple and efficient, non-viral alternative method for in vitro studies of gene and protein function in human skull growth. Human primary suture mesenchymal cells exhibit robust responses to BMP2 and BMP3, and thus nucleofection can be a valuable method for studying the potential competing action of these two bone growth factors in a model system of cranial bone growth.
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Affiliation(s)
- Prem P Dwivedi
- Craniofacial Research Group, Women's and Children's Health Research Institute, 72 King William Road, North Adelaide, South Australia 5006, Australia
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36
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Santhagunam A, Madeira C, Cabral JMS. Genetically engineered stem cell-based strategies for articular cartilage regeneration. Biotechnol Appl Biochem 2012; 59:121-31. [DOI: 10.1002/bab.1016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Accepted: 03/06/2012] [Indexed: 02/06/2023]
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Scheibe F, Gladow N, Mergenthaler P, Tucker AH, Meisel A, Prockop DJ, Priller J. Nonviral gene delivery of erythropoietin by mesenchymal stromal cells. Gene Ther 2011; 19:550-60. [DOI: 10.1038/gt.2011.139] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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38
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Abstract
This study aims to modify a cyclodextrin-PEI-based polymer, PEI-β-CyD, with the TAT peptide for plasmid DNA delivery to placenta mesenchymal stem cells (PMSCs). By using the disulfide exchange between the SPDP-activated PEI-β-CyD and TAT peptide, the TAT-PEI-β-CyD polymer was fabricated and the success of this was confirmed by the presence of characteristic peaks for PEI (at δ 2.8-3.2 ppm), CyD (at δ 5.2, 3.8-4.0 and 3.4-3.6 ppm) and TAT (at δ 1.6-1.9 and 6.8-7.2 ppm) in the (1)H NMR spectrum of TAT-PEI-β-CyD. The polymer-plasmid-DNA polyplex could condense DNA at an N/P ratio of 7.0-8.0, and form nanoparticles with the size of 150.6±5.6 nm at its optimal N/P ratio (20/1). By examining the transfection efficiency and cytotoxicity of TAT-PEI-β-CyD, conjugation of the TAT peptide onto PEI-β-CyD was demonstrated to improve the transfection efficiency of PEI-β-CyD in PMSCs after 48 and 96 hours of post-transfection incubation. The viability of PEI-β-CyD-treated PMSCs was shown to be over 80% after 5 h of treatment and 24 h of post-treatment incubation. In summary, this study showed that the TAT-PEI-β-CyD polymer as a vector for plasmid DNA delivery to PMSCs and other cells warrants further investigations. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s12668-011-0010-9) contains supplementary material, which is available to authorized users.
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Roger M, Clavreul A, Venier-Julienne MC, Passirani C, Montero-Menei C, Menei P. The potential of combinations of drug-loaded nanoparticle systems and adult stem cells for glioma therapy. Biomaterials 2011; 32:2106-16. [DOI: 10.1016/j.biomaterials.2010.11.056] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Accepted: 11/14/2010] [Indexed: 12/16/2022]
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40
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Madeira C, Ribeiro SC, Pinheiro IS, Martins SA, Andrade PZ, da Silva CL, Cabral JM. Gene delivery to human bone marrow mesenchymal stem cells by microporation. J Biotechnol 2011; 151:130-6. [DOI: 10.1016/j.jbiotec.2010.11.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Revised: 09/22/2010] [Accepted: 11/03/2010] [Indexed: 11/28/2022]
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O'Grady M, Batchelor RH, Scheyhing K, Kemp CW, Hanson GT, Lakshmipathy U. BacMam-mediated gene delivery into multipotent mesenchymal stromal cells. Methods Mol Biol 2011; 698:485-504. [PMID: 21431539 DOI: 10.1007/978-1-60761-999-4_34] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Baculoviruses have been used over the last several decades for high-level protein production in insect cells. Recently, modified baculovirus containing a mammalian promoter, known as BacMam virus, has been shown to give high transduction efficiencies across several cell types with minimal cytopathic effects. Cell types amenable to BacMam transduction include primary and adult stem cells. The shuttle vectors used in the construction of BacMam viruses can hold gene fragments up to 38 kb in size, and multiple BacMam viruses can be used in a single transduction for the delivery of more than one gene. BacMam technology has been used in the delivery and expression of targeted fluorescent protein cellular markers, small interfering RNAi, and extensively in the development of cell-based assays. BacMam offers an ideal method for the delivery and expression of large genes in hard-to-transfect cells such as primary and adult stem cells. In this chapter, we describe methods of generating high titer stocks of BacMam for transducing MSC and their derivatives.
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Affiliation(s)
- Michael O'Grady
- Primary and Stem Cell Systems, Life Technologies, Carlsbad, CA, USA
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42
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Roger M, Clavreul A, Venier-Julienne MC, Passirani C, Sindji L, Schiller P, Montero-Menei C, Menei P. Mesenchymal stem cells as cellular vehicles for delivery of nanoparticles to brain tumors. Biomaterials 2010; 31:8393-401. [PMID: 20688391 DOI: 10.1016/j.biomaterials.2010.07.048] [Citation(s) in RCA: 160] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2010] [Accepted: 07/08/2010] [Indexed: 01/06/2023]
Abstract
The prognosis of patients with malignant glioma remains extremely poor, despite surgery and improvements in radio- and chemo-therapies. Nanotechnologies represent great promise in glioma therapy as they protect therapeutic agent and allow its sustained release. However, new paradigms allowing tumor specific targeting and extensive intratumoral distribution must be developed to efficiently deliver nanoparticles (NPs). Knowing the tropism of mesenchymal stem cells (MSCs) for brain tumors, the aim of this study was to obtain the proof of concept that these cells can be used as NP delivery vehicles. Two types of NPs loaded with coumarin-6 were investigated: poly-lactic acid NPs (PLA-NPs) and lipid nanocapsules (LNCs). The results show that these NPs can be efficiently internalized into MSCs while cell viability and differentiation are not affected. Furthermore, these NP-loaded cells were able to migrate toward an experimental human glioma model. These data suggest that MSCs can serve as cellular carriers for NPs in brain tumors.
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Affiliation(s)
- Mathilde Roger
- INSERM Unit 646, Ingénierie de la Vectorisation Particulaire, 10 rue André Bocquel, Université d'Angers, 49100 Angers, France
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Nonviral gene delivery to mesenchymal stem cells using cationic liposomes for gene and cell therapy. J Biomed Biotechnol 2010; 2010:735349. [PMID: 20625411 PMCID: PMC2896879 DOI: 10.1155/2010/735349] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2009] [Accepted: 04/06/2010] [Indexed: 11/18/2022] Open
Abstract
Mesenchymal stem cells (MSCs) hold a great promise for application in several therapies due to their unique biological characteristics. In order to harness their full potential in cell-or gene-based therapies it might be advantageous to enhance some of their features through gene delivery strategies. Accordingly, we are interested in developing an efficient and safe methodology to genetically engineer human bone marrow MSC (BM MSC), enhancing their therapeutic efficacy in Regenerative Medicine. The plasmid DNA delivery was optimized using a cationic liposome-based reagent. Transfection efficiencies ranged from ~2% to ~35%, resulting from using a Lipid/DNA ratio of 1.25 with a transgene expression of 7 days. Importantly, the number of plasmid copies in different cell passages was quantified for the first time and ~20,000 plasmid copies/cell were obtained independently of cell passage. As transfected MSC have shown high viabilities (>90%) and recoveries (>52%) while maintaining their multipotency, this might be an advantageous transfection strategy when the goal is to express a therapeutic gene in a safe and transient way.
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44
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Optimization of gene delivery to HEK293T cells by microporation using a central composite design methodology. Biotechnol Lett 2010; 32:1393-9. [DOI: 10.1007/s10529-010-0327-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Accepted: 06/07/2010] [Indexed: 10/19/2022]
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45
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Ivorra A, Villemejane J, Mir LM. Electrical modeling of the influence of medium conductivity on electroporation. Phys Chem Chem Phys 2010; 12:10055-64. [DOI: 10.1039/c004419a] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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46
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Escoffre JM, Mauroy C, Portet T, Wasungu L, Rosazza C, Gilbart Y, Mallet L, Bellard E, Golzio M, Rols MP, Teissié J. Gene electrotransfer: from biophysical mechanisms to in vivo applications : Part 1- Biophysical mechanisms. Biophys Rev 2009; 1:177. [PMID: 28510029 DOI: 10.1007/s12551-009-0022-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2009] [Accepted: 10/29/2009] [Indexed: 01/25/2023] Open
Abstract
Electropulsation is one of the nonviral methods successfully used to deliver genes into living cells in vitro and in vivo. This approach shows promise in the field of gene and cellular therapies. The present review focuses on the processes supporting gene electrotransfer in vitro. In the first part, we will report the events occurring before, during, and after pulse application in the specific field of plasmid DNA electrotransfer at the cell level. A critical discussion of the present theoretical considerations about membrane electropermeabilization and the transient structures involved in the plasmid uptake follows in a second part.
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Affiliation(s)
- Jean-Michel Escoffre
- CNRS, IPBS (Institut de Pharmacologie et de Biologie Structurale), 205 route de Narbonne, 31077, Toulouse, France.,Université de Toulouse UPS, IPBS, 31077, Toulouse, France
| | - Chloé Mauroy
- CNRS, IPBS (Institut de Pharmacologie et de Biologie Structurale), 205 route de Narbonne, 31077, Toulouse, France.,Université de Toulouse UPS, IPBS, 31077, Toulouse, France
| | - Thomas Portet
- CNRS, IPBS (Institut de Pharmacologie et de Biologie Structurale), 205 route de Narbonne, 31077, Toulouse, France.,Université de Toulouse UPS, IPBS, 31077, Toulouse, France
| | - Luc Wasungu
- CNRS, IPBS (Institut de Pharmacologie et de Biologie Structurale), 205 route de Narbonne, 31077, Toulouse, France.,Université de Toulouse UPS, IPBS, 31077, Toulouse, France
| | - Chrystelle Rosazza
- CNRS, IPBS (Institut de Pharmacologie et de Biologie Structurale), 205 route de Narbonne, 31077, Toulouse, France.,Université de Toulouse UPS, IPBS, 31077, Toulouse, France
| | - Yoann Gilbart
- CNRS, IPBS (Institut de Pharmacologie et de Biologie Structurale), 205 route de Narbonne, 31077, Toulouse, France.,Université de Toulouse UPS, IPBS, 31077, Toulouse, France
| | - Laetitia Mallet
- CNRS, IPBS (Institut de Pharmacologie et de Biologie Structurale), 205 route de Narbonne, 31077, Toulouse, France.,Université de Toulouse UPS, IPBS, 31077, Toulouse, France
| | - Elisabeth Bellard
- CNRS, IPBS (Institut de Pharmacologie et de Biologie Structurale), 205 route de Narbonne, 31077, Toulouse, France.,Université de Toulouse UPS, IPBS, 31077, Toulouse, France
| | - Muriel Golzio
- CNRS, IPBS (Institut de Pharmacologie et de Biologie Structurale), 205 route de Narbonne, 31077, Toulouse, France.,Université de Toulouse UPS, IPBS, 31077, Toulouse, France
| | - Marie-Pierre Rols
- CNRS, IPBS (Institut de Pharmacologie et de Biologie Structurale), 205 route de Narbonne, 31077, Toulouse, France. .,Université de Toulouse UPS, IPBS, 31077, Toulouse, France.
| | - Justin Teissié
- CNRS, IPBS (Institut de Pharmacologie et de Biologie Structurale), 205 route de Narbonne, 31077, Toulouse, France. .,Université de Toulouse UPS, IPBS, 31077, Toulouse, France.
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Lin WZ, Lee SS, Cheung WT. Efficient expression of foreign genes in CHO DHFR− cellsby electroporation. Biologicals 2009; 37:277-81. [DOI: 10.1016/j.biologicals.2009.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2008] [Revised: 03/27/2009] [Accepted: 03/31/2009] [Indexed: 10/20/2022] Open
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48
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Yalvac ME, Ramazanoglu M, Gumru OZ, Sahin F, Palotás A, Rizvanov AA. Comparison and Optimisation of Transfection of Human Dental Follicle Cells, a Novel Source of Stem Cells, with Different Chemical Methods and Electro-poration. Neurochem Res 2009; 34:1272-7. [DOI: 10.1007/s11064-008-9905-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2008] [Indexed: 01/23/2023]
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49
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Bouclier C, Moine L, Hillaireau H, Marsaud V, Connault E, Opolon P, Couvreur P, Fattal E, Renoir JM. Physicochemical Characteristics and Preliminary in Vivo Biological Evaluation of Nanocapsules Loaded with siRNA Targeting Estrogen Receptor Alpha. Biomacromolecules 2008; 9:2881-90. [DOI: 10.1021/bm800664c] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Céline Bouclier
- Physico-Chimie, Pharmacotechnie, Biopharmacie, Université Paris-Sud, CNRS UMR 8612 and IFR 141, 5 rue Jean-Baptiste Clément, 92296 Châtenay-Malabry, France, and Institut Gustave Roussy, CNRS UNR 8121, Villejuif, France
| | - Laurence Moine
- Physico-Chimie, Pharmacotechnie, Biopharmacie, Université Paris-Sud, CNRS UMR 8612 and IFR 141, 5 rue Jean-Baptiste Clément, 92296 Châtenay-Malabry, France, and Institut Gustave Roussy, CNRS UNR 8121, Villejuif, France
| | - Hervé Hillaireau
- Physico-Chimie, Pharmacotechnie, Biopharmacie, Université Paris-Sud, CNRS UMR 8612 and IFR 141, 5 rue Jean-Baptiste Clément, 92296 Châtenay-Malabry, France, and Institut Gustave Roussy, CNRS UNR 8121, Villejuif, France
| | - Véronique Marsaud
- Physico-Chimie, Pharmacotechnie, Biopharmacie, Université Paris-Sud, CNRS UMR 8612 and IFR 141, 5 rue Jean-Baptiste Clément, 92296 Châtenay-Malabry, France, and Institut Gustave Roussy, CNRS UNR 8121, Villejuif, France
| | - Elisabeth Connault
- Physico-Chimie, Pharmacotechnie, Biopharmacie, Université Paris-Sud, CNRS UMR 8612 and IFR 141, 5 rue Jean-Baptiste Clément, 92296 Châtenay-Malabry, France, and Institut Gustave Roussy, CNRS UNR 8121, Villejuif, France
| | - Paule Opolon
- Physico-Chimie, Pharmacotechnie, Biopharmacie, Université Paris-Sud, CNRS UMR 8612 and IFR 141, 5 rue Jean-Baptiste Clément, 92296 Châtenay-Malabry, France, and Institut Gustave Roussy, CNRS UNR 8121, Villejuif, France
| | - Patrick Couvreur
- Physico-Chimie, Pharmacotechnie, Biopharmacie, Université Paris-Sud, CNRS UMR 8612 and IFR 141, 5 rue Jean-Baptiste Clément, 92296 Châtenay-Malabry, France, and Institut Gustave Roussy, CNRS UNR 8121, Villejuif, France
| | - Elias Fattal
- Physico-Chimie, Pharmacotechnie, Biopharmacie, Université Paris-Sud, CNRS UMR 8612 and IFR 141, 5 rue Jean-Baptiste Clément, 92296 Châtenay-Malabry, France, and Institut Gustave Roussy, CNRS UNR 8121, Villejuif, France
| | - Jack-Michel Renoir
- Physico-Chimie, Pharmacotechnie, Biopharmacie, Université Paris-Sud, CNRS UMR 8612 and IFR 141, 5 rue Jean-Baptiste Clément, 92296 Châtenay-Malabry, France, and Institut Gustave Roussy, CNRS UNR 8121, Villejuif, France
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50
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Time dependence of electric field effects on cell membranes. A review for a critical selection of pulse duration for therapeutical applications. Radiol Oncol 2008. [DOI: 10.2478/v10019-008-0016-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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