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Radzevičiūtė-Valčiukė E, Gečaitė J, Balevičiūtė A, Szewczyk A, Želvys A, Lekešytė B, Malyško-Ptašinskė V, Mickevičiūtė E, Malakauskaitė P, Kulbacka J, Novickij V. Effects of buffer composition and plasmid toxicity on electroporation-based non-viral gene delivery in mammalian cells using bursts of nanosecond and microsecond pulses. Front Bioeng Biotechnol 2024; 12:1430637. [PMID: 39050682 PMCID: PMC11266100 DOI: 10.3389/fbioe.2024.1430637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Accepted: 06/17/2024] [Indexed: 07/27/2024] Open
Abstract
Gene electrotransfer (GET) is non-viral gene delivery technique, also known as electroporation-mediated gene delivery or electrotransfection. GET is a method used to introduce foreign genetic material (such as DNA or RNA) into cells by applying external pulsed electric fields (PEFs) to create temporary pores in the cell membrane. This study was undertaken to examine the impact of buffer composition on the efficiency of GET in mammalian cells Also, we specifically compared the effectiveness of high-frequency nanosecond (ns) pulses with standard microsecond (µs) pulses. For the assessment of cell transfection efficiency and viability, flow cytometric analysis, luminescent assays, and measurements of metabolic activity were conducted. The efficiency of electrotransfection was evaluated using two different proteins encoding plasmids (pEGFP-N1 and Luciferase-pcDNA3). The investigation revealed that the composition of the electroporation buffer significantly influences the efficacy of GET in CHO-K1 cell line. The different susceptibility of cell lines to the electric field and the plasmid cytotoxicity were reported. It was also shown that electroporation with nanosecond duration PEF protocols ensured equivalent or even better transfection efficiency than standard µsPEF. Additionally, we successfully performed long-term transfection of the murine 4T1 cell line using high-frequency nanosecond PEFs and confirmed its' applicability in an in vivo model. The findings from the study can be applied to optimize electrotransfection conditions.
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Affiliation(s)
- Eivina Radzevičiūtė-Valčiukė
- State Research Institute Centre for Innovative Medicine, Department of Immunology and Bioelectrochemistry, Vilnius, Lithuania
- Faculty of Electronics, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | - Jovita Gečaitė
- State Research Institute Centre for Innovative Medicine, Department of Immunology and Bioelectrochemistry, Vilnius, Lithuania
| | - Austėja Balevičiūtė
- State Research Institute Centre for Innovative Medicine, Department of Immunology and Bioelectrochemistry, Vilnius, Lithuania
| | - Anna Szewczyk
- State Research Institute Centre for Innovative Medicine, Department of Immunology and Bioelectrochemistry, Vilnius, Lithuania
- Faculty of Pharmacy, Department of Molecular and Cellular Biology, Wroclaw Medical University, Wroclaw, Poland
| | - Augustinas Želvys
- State Research Institute Centre for Innovative Medicine, Department of Immunology and Bioelectrochemistry, Vilnius, Lithuania
- Faculty of Electronics, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | - Barbora Lekešytė
- State Research Institute Centre for Innovative Medicine, Department of Immunology and Bioelectrochemistry, Vilnius, Lithuania
- Faculty of Electronics, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | | | - Eglė Mickevičiūtė
- State Research Institute Centre for Innovative Medicine, Department of Immunology and Bioelectrochemistry, Vilnius, Lithuania
- Faculty of Electronics, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | - Paulina Malakauskaitė
- State Research Institute Centre for Innovative Medicine, Department of Immunology and Bioelectrochemistry, Vilnius, Lithuania
- Faculty of Electronics, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | - Julita Kulbacka
- State Research Institute Centre for Innovative Medicine, Department of Immunology and Bioelectrochemistry, Vilnius, Lithuania
- Faculty of Pharmacy, Department of Molecular and Cellular Biology, Wroclaw Medical University, Wroclaw, Poland
| | - Vitalij Novickij
- State Research Institute Centre for Innovative Medicine, Department of Immunology and Bioelectrochemistry, Vilnius, Lithuania
- Faculty of Electronics, Vilnius Gediminas Technical University, Vilnius, Lithuania
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Liu Y, Fan Z, Xiang XW, Tao X, Xia X, Shi Q, Lu Y, Lu J, Gu H, Liu YJ, Liu B. Engineering of Multivalent Membrane-Anchored DNA Frameworks for Precise Profiling of Variable Membrane Permeability During Reversible Electroporation. SMALL METHODS 2024; 8:e2301198. [PMID: 38152955 DOI: 10.1002/smtd.202301198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 12/08/2023] [Indexed: 12/29/2023]
Abstract
Electroporation techniques have emerged as attractive tools for intracellular delivery, rendering promising prospects towards clinical therapies. Transient disruption of membrane permeability is the critical process for efficient electroporation-based cargo delivery. However, smart nanotools for precise characterization of transient membrane changes induced by strong electric pulses are extremely limited. Herein, multivalent membrane-anchored fluorescent nanoprobes (MMFNPs) that take advantages of flexible functionalization and spatial arrangement of DNA frameworks are developed for in situ evaluation of electric field-induced membrane permeability during reversible electroporation . Single-molecule fluorescence imaging techniques are adopted to precisely verify the excellent analytical performance of the engineered MMFNPs. Benefited from tight membrane anchoring and sensitive adenosine triphosphate (ATP) profiling, varying degrees of membrane disturbances are visually exhibited under different intensities of the microsecond pulse electric field (µsPEF). Significantly, the dynamic process of membrane repair during reversible electroporation is well demonstrated via ATP fluctuations monitored by the designed MMFNPs. Furthermore, molecular dynamics (MD) simulations are performed for accurate verification of electroporation-driven dynamic cargo entry via membrane nanopores. This work provides an avenue for effectively capturing transient fluctuations of membrane permeability under external stimuli, offering valuable guidance for developing efficient and safe electroporation-driven delivery strategies for clinical diagnosis and therapeutics.
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Affiliation(s)
- Yixin Liu
- Department of Chemistry, Shanghai Stomatological Hospital, State Key Lab of Molecular Engineering of Polymers, Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Zihui Fan
- Department of Chemistry, Shanghai Stomatological Hospital, State Key Lab of Molecular Engineering of Polymers, Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Xiao-Wei Xiang
- Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, 310030, China
| | - Xiaonan Tao
- School of Information Science and Technology, Fudan University, Shanghai, 200032, China
| | - Xinwei Xia
- Department of Chemistry, Shanghai Stomatological Hospital, State Key Lab of Molecular Engineering of Polymers, Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Qian Shi
- Department of Chemistry, Shanghai Stomatological Hospital, State Key Lab of Molecular Engineering of Polymers, Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Yanwei Lu
- Department of Chemistry, Shanghai Stomatological Hospital, State Key Lab of Molecular Engineering of Polymers, Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Jiayin Lu
- Department of Chemistry, Shanghai Stomatological Hospital, State Key Lab of Molecular Engineering of Polymers, Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Hongzhou Gu
- Department of Chemistry, Shanghai Stomatological Hospital, State Key Lab of Molecular Engineering of Polymers, Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Yan-Jun Liu
- Department of Chemistry, Shanghai Stomatological Hospital, State Key Lab of Molecular Engineering of Polymers, Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Baohong Liu
- Department of Chemistry, Shanghai Stomatological Hospital, State Key Lab of Molecular Engineering of Polymers, Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
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Ahmad MU, Walsh A, Kirane A. Review of Role of Surgery with Electroporation in Melanoma: Chemotherapy, Immunotherapy, and Gene Delivery. J Clin Med 2024; 13:3828. [PMID: 38999394 PMCID: PMC11242408 DOI: 10.3390/jcm13133828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2024] [Revised: 06/21/2024] [Accepted: 06/27/2024] [Indexed: 07/14/2024] Open
Abstract
Electroporation with chemotherapy (ECT) is currently offered as a treatment in Europe for locoregional or metastatic melanoma with cutaneous lesions. However, the role of surgery and other forms of electroporation in melanoma requires further evaluation. Two reviewers used two databases to conduct a literature search and review, and 51 publications related to electroporation with chemotherapy, immunotherapy, or gene delivery were found. ECT appears to be effective in reducing tumor burden for surgical resection, replacing surgical intervention with evidence of complete regression in some lesions, and inducing both local and systemic immune effects. These immune effects are pronounced when ECT is combined with immunotherapy, with a statistically significant improvement in overall survival (OS). Other forms of electroporation, such as those using calcium chloride, an IL-12 plasmid, and vaccination, require further study. However, IL-12 plasmid electroporation may be inferior to ECT based on the evidence available. Furthermore, irradiation of the tumor prior to ECT treatment is negatively correlated with local response. Access to ECT is restricted in the US and requires further evaluation. More randomized controlled trials of ECT and electroporation treatment in locoregional melanoma are recommended.
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Affiliation(s)
- M. Usman Ahmad
- Department of Surgery, Stanford University, Stanford, CA 94305, USA;
| | - Allyson Walsh
- Moores Cancer Center, University of California San Diego Health, San Diego, CA 92103, USA;
| | - Amanda Kirane
- Department of Surgery, Stanford University, Stanford, CA 94305, USA;
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Zhu X, Shi Z, Mao Y, Lächelt U, Huang R. Cell Membrane Perforation: Patterns, Mechanisms and Functions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310605. [PMID: 38344881 DOI: 10.1002/smll.202310605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 12/21/2023] [Indexed: 02/21/2024]
Abstract
Cell membrane is crucial for the cellular activities, and any disruption to it may affect the cells. It is demonstrated that cell membrane perforation is associated with some biological processes like programmed cell death (PCD) and infection of pathogens. Specific developments make it a promising technique to perforate the cell membrane controllably and precisely. The pores on the cell membrane provide direct pathways for the entry and exit of substances, and can also cause cell death, which means reasonable utilization of cell membrane perforation is able to assist intracellular delivery, eliminate diseased or cancerous cells, and bring about other benefits. This review classifies the patterns of cell membrane perforation based on the mechanisms into 1) physical patterns, 2) biological patterns, and 3) chemical patterns, introduces the characterization methods and then summarizes the functions according to the characteristics of reversible and irreversible pores, with the aim of providing a comprehensive summary of the knowledge related to cell membrane perforation and enlightening broad applications in biomedical science.
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Affiliation(s)
- Xinran Zhu
- Key Laboratory of Smart Drug Delivery (Ministry of Education), Huashan Hospital, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Zhifeng Shi
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, 201203, China
| | - Ying Mao
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, 201203, China
| | - Ulrich Lächelt
- Department of Pharmaceutical Sciences, University of Vienna, Vienna, 1090, Austria
| | - Rongqin Huang
- Key Laboratory of Smart Drug Delivery (Ministry of Education), Huashan Hospital, School of Pharmacy, Fudan University, Shanghai, 201203, China
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Mahmood N, Muhoza B, Kothakot A, Munir Z, Huang Y, Zhang Y, Pandiselvam R, Iqbal S, Zhang S, Li Y. Application of emerging thermal and nonthermal technologies for improving textural properties of food grains: A critical review. Compr Rev Food Sci Food Saf 2024; 23:e13286. [PMID: 38284581 DOI: 10.1111/1541-4337.13286] [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: 03/22/2023] [Revised: 11/22/2023] [Accepted: 12/04/2023] [Indexed: 01/30/2024]
Abstract
Emerging nonthermal and thermal food processing technologies are a better alternative to conventional thermal processing techniques because they offer high-quality, minimally processed food. Texture is important in the food industry because it encompasses several product attributes and plays a vital role in consumer acceptance. Therefore, it is imperative to analyze the extent to which these technologies influence the textural attributes of food grains. Physical forces produced by cavitation are attributed to ultrasound treatment-induced changes in the conformational and structural properties of food proteins. Pulsed electric field treatment causes polarization of starch granules, damaging the dense outer layer of starch granules and decreasing the mechanical strength of starch. Prolonged radio frequency heating results in the denaturation of proteins and gelatinization of starch, thus reducing binding tendency during cooking. Microwave energy induces rapid removal of water from the product surface, resulting in lower bulk density, low shrinkage, and a porous structure. However, evaluating the influence of these techniques on food grain texture is difficult owing to differences in their primary operation mode, operating conditions, and equipment design. To maximize the advantages of nonthermal and thermal technologies, in-depth research should be conducted on their effects on the textural properties of different food grains while ensuring the selection of appropriate operating conditions for each food grain type. This article summarizes all recent developments in these emerging processing technologies for food grains, discusses their potential applications and drawbacks, and presents prospects for future developments in food texture enhancement.
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Affiliation(s)
- Naveed Mahmood
- College of Food Science, Northeast Agricultural University, Harbin, China
| | - Bertrand Muhoza
- College of Food Science, Northeast Agricultural University, Harbin, China
| | - Anjineyulu Kothakot
- Agro-Processing & Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Trivandrum, Kerala, India
| | - Zeeshan Munir
- Department of Agricultural Engineering, University of Kassel, Witzenhausen, Germany
| | - Yuyang Huang
- College of Food Engineering, Harbin University of Commerce, Harbin, China
| | - Yue Zhang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
| | - R Pandiselvam
- Division of Physiology, Biochemistry and Post-Harvest Technology, ICAR-Central Plantation Crops Research Institute, Kasaragod, Kerala, India
| | - Sohail Iqbal
- College of Food Science, Northeast Agricultural University, Harbin, China
| | - Shuang Zhang
- College of Food Science, Northeast Agricultural University, Harbin, China
| | - Yang Li
- College of Food Science, Northeast Agricultural University, Harbin, China
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Ma J, Singh S, Li M, Seelig D, Molnar GF, Wong ET, Dhawan S, Kim S, Helland L, Chen D, Tapinos N, Lawler S, Singh G, Chen CC. Directionally non-rotating electric field therapy delivered through implanted electrodes as a glioblastoma treatment platform: A proof-of-principle study. Neurooncol Adv 2024; 6:vdae121. [PMID: 39156619 PMCID: PMC11327618 DOI: 10.1093/noajnl/vdae121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/20/2024] Open
Abstract
Background While directionally rotating tumor-treating fields (TTF) therapy has garnered considerable clinical interest in recent years, there has been comparatively less focus on directionally non-rotating electric field therapy (dnEFT). Methods We explored dnEFT generated through customized electrodes as a glioblastoma therapy in in vitro and in vivo preclinical models. The effects of dnEFT on tumor apoptosis and microglia/macrophages in the tumor microenvironment were tested using flow-cytometric and qPCR assays. Results In vitro, dnEFT generated using a clinical-grade spinal cord stimulator showed antineoplastic activity against independent glioblastoma cell lines. In support of the results obtained using the clinical-grade electrode, dnEFT delivered through a customized, 2-electrode array induced glioblastoma apoptosis. To characterize this effect in vivo, a custom-designed 4-electrode array was fabricated such that tumor cells can be implanted into murine cerebrum through a center channel equidistant from the electrodes. After implantation with this array and luciferase-expressing murine GL261 glioblastoma cells, mice were randomized to dnEFT or placebo. Relative to placebo-treated mice, dnEFT reduced tumor growth (measured by bioluminescence) and prolonged survival (median survival gain of 6.5 days). Analysis of brain sections following dnEFT showed a notable increase in the accumulation of peritumoral macrophage/microglia with increased expression of M1 genes (IFNγ, TNFα, and IL-6) and decreased expression of M2 genes (CD206, Arg, and IL-10) relative to placebo-treated tumors. Conclusions Our results suggest therapeutic potential in glioblastoma for dnEFT delivered through implanted electrodes, supporting the development of a proof-of-principle clinical trial using commercially available deep brain stimulator electrodes.
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Affiliation(s)
- Jun Ma
- Department of Neurosurgery, University of Minnesota, Minneapolis, Minnesota, USA
| | - Shilpi Singh
- Department of Neurosurgery, University of Minnesota, Minneapolis, Minnesota, USA
| | - Ming Li
- Department of Neurosurgery, University of Minnesota, Minneapolis, Minnesota, USA
| | - Davis Seelig
- Department of Veterinary Clinic Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, Minnesota, USA
| | | | - Eric T Wong
- Department of Neurology, Warren Alpert School of Medicine, Rhode Island Hospital, Brown University, Providence, Rhode Island, USA
| | - Sanjay Dhawan
- Department of Neurosurgery, University of Minnesota, Minneapolis, Minnesota, USA
| | - Stefan Kim
- Department of Neurosurgery, University of Minnesota, Minneapolis, Minnesota, USA
| | - Logan Helland
- Department of Neurosurgery, University of Minnesota, Minneapolis, Minnesota, USA
| | - David Chen
- Department of Neurosurgery, Taiwan Medical University, Taipei, Taiwan
| | - Nikos Tapinos
- Department of Neurosurgery, Warren Alpert School of Medicine, Rhode Island Hospital, Brown University, Providence, Rhode Island, USA
| | - Sean Lawler
- Department of Pathology and Laboratory Medicine, Legorreta Cancer Center, Brown University, Providence, Rhode Island, USA
| | - Gatikrushna Singh
- Department of Neurosurgery, University of Minnesota, Minneapolis, Minnesota, USA
| | - Clark C Chen
- Department of Neurosurgery, University of Minnesota, Minneapolis, Minnesota, USA
- Department of Neurosurgery, Warren Alpert School of Medicine, Rhode Island Hospital, Brown University, Providence, Rhode Island, USA
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Campana LG, Daud A, Lancellotti F, Arroyo JP, Davalos RV, Di Prata C, Gehl J. Pulsed Electric Fields in Oncology: A Snapshot of Current Clinical Practices and Research Directions from the 4th World Congress of Electroporation. Cancers (Basel) 2023; 15:3340. [PMID: 37444450 PMCID: PMC10340685 DOI: 10.3390/cancers15133340] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/29/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
The 4th World Congress of Electroporation (Copenhagen, 9-13 October 2022) provided a unique opportunity to convene leading experts in pulsed electric fields (PEF). PEF-based therapies harness electric fields to produce therapeutically useful effects on cancers and represent a valuable option for a variety of patients. As such, irreversible electroporation (IRE), gene electrotransfer (GET), electrochemotherapy (ECT), calcium electroporation (Ca-EP), and tumour-treating fields (TTF) are on the rise. Still, their full therapeutic potential remains underappreciated, and the field faces fragmentation, as shown by parallel maturation and differences in the stages of development and regulatory approval worldwide. This narrative review provides a glimpse of PEF-based techniques, including key mechanisms, clinical indications, and advances in therapy; finally, it offers insights into current research directions. By highlighting a common ground, the authors aim to break silos, strengthen cross-functional collaboration, and pave the way to novel possibilities for intervention. Intriguingly, beyond their peculiar mechanism of action, PEF-based therapies share technical interconnections and multifaceted biological effects (e.g., vascular, immunological) worth exploiting in combinatorial strategies.
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Affiliation(s)
- Luca G. Campana
- Department of Surgery, Manchester University NHS Foundation Trust, Oxford Rd., Manchester M13 9WL, UK;
| | - Adil Daud
- Department of Medicine, University of California, 550 16 Street, San Francisco, CA 94158, USA;
| | - Francesco Lancellotti
- Department of Surgery, Manchester University NHS Foundation Trust, Oxford Rd., Manchester M13 9WL, UK;
| | - Julio P. Arroyo
- Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA 24061, USA; (J.P.A.); (R.V.D.)
| | - Rafael V. Davalos
- Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA 24061, USA; (J.P.A.); (R.V.D.)
- Institute for Critical Technology and Applied Sciences, Virginia Tech, Blacksburg, VA 24061, USA
| | - Claudia Di Prata
- Department of Surgery, San Martino Hospital, 32100 Belluno, Italy;
| | - Julie Gehl
- Department of Clinical Oncology and Palliative Care, Zealand University Hospital, 4000 Roskilde, Denmark;
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, 1165 Copenhagen, Denmark
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