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Wang Y, Ma R, Huang Z, Zhou Y, Wang K, Xiao Z, Guo Q, Yang D, Han M, Shen S, Qian J, Gao X, Liu Z, Zhou L, Yin S, Zheng S. Investigation of lethal thresholds of nanosecond pulsed electric field in rabbit VX2 hepatic tumors through finite element analysis and verification with a single-needle bipolar electrode: A prospective strategy employing three-dimensional comparisons. Comput Biol Med 2024; 168:107824. [PMID: 38086143 DOI: 10.1016/j.compbiomed.2023.107824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 11/16/2023] [Accepted: 12/04/2023] [Indexed: 01/10/2024]
Abstract
Pulsed electric field has emerged as a promising modality for the solid tumor ablation with the advantage in treatment planning, however, the accurate prediction of the lesion margin requires the determination of the lethal electric field (E) thresholds. Herein we employ the highly repetitive nanosecond pulsed electric field (RnsPEF) to ablate the normal and VX2 tumor-bearing livers of rabbits. The ultrasound-guided surgery is operated using the conventional double- and newly devised single-needle bipolar electrodes. Finite element analysis is also introduced to simulate the E distribution in the practical treatments. Two- and three-dimensional investigations are performed on the image measurements and reconstructed calcification models on micro-CT, respectively. Specially, an algorithm considering the model surface, volume and shape is employed to compare the similarities between the simulative and experimental models. Blood vessel injury, temperature and synergistic efficacy with doxorubicin (DOX) are also investigated. According to the three-dimensional calculation, the overall E threshold is 4536.4 ± 618.2 V/cm and the single-needle bipolar electrode is verified to be effective in tissue ablation. Vessels are well preserved and the increment of temperature is limited. Synergy of RnsPEF and DOX shows increased apoptosis and improved long-term tumor survival. Our study presents a prospective strategy for the evaluation of the lethal E threshold, which can be considered to guide the future clinical treatment planning for RnsPEF.
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Affiliation(s)
- Yubo Wang
- Key Laboratory of Multi-Organ Transplantation Research (Ministry of Health), First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310003, China
| | - Rongwei Ma
- Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang Province, 310003, China
| | - Zhiliang Huang
- Department of Ultrasound, Shulan Hospital, Hangzhou, Zhejiang Province, 310003, China
| | - Yuan Zhou
- Key Laboratory of Multi-Organ Transplantation Research (Ministry of Health), First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310003, China
| | - Ke Wang
- College of Computer Science and Technology, China University of Minning and Technology, Xuzhou, Jiangsu Province, 221008, China
| | - Zhoufang Xiao
- College of Computer Science and Technology, Hangzhou Dianzi University, Hangzhou, Zhejiang Province, 310003, China
| | - Qiang Guo
- Department of Ultrasound, Shulan Hospital, Hangzhou, Zhejiang Province, 310003, China
| | - Dezhi Yang
- Department of Ultrasound, Shulan Hospital, Hangzhou, Zhejiang Province, 310003, China
| | - Mingchen Han
- College of Computer Science and Technology, China University of Minning and Technology, Xuzhou, Jiangsu Province, 221008, China
| | - Shuwei Shen
- College of Computer Science and Technology, Hangzhou Dianzi University, Hangzhou, Zhejiang Province, 310003, China
| | - Junjie Qian
- Key Laboratory of Multi-Organ Transplantation Research (Ministry of Health), First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310003, China
| | - Xingxing Gao
- Key Laboratory of Multi-Organ Transplantation Research (Ministry of Health), First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310003, China
| | - Zhen Liu
- Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang Province, 310003, China
| | - Lin Zhou
- Key Laboratory of Multi-Organ Transplantation Research (Ministry of Health), First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310003, China
| | - Shengyong Yin
- Key Laboratory of Multi-Organ Transplantation Research (Ministry of Health), First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310003, China.
| | - Shunsen Zheng
- Key Laboratory of Multi-Organ Transplantation Research (Ministry of Health), First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310003, China; Department of Ultrasound, Shulan Hospital, Hangzhou, Zhejiang Province, 310003, China.
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High-Frequency Nanosecond Bleomycin Electrochemotherapy and its Effects on Changes in the Immune System and Survival. Cancers (Basel) 2022; 14:cancers14246254. [PMID: 36551739 PMCID: PMC9776811 DOI: 10.3390/cancers14246254] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/06/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022] Open
Abstract
In this work, a time-dependent and time-independent study on bleomycin-based high-frequency nsECT (3.5 kV/cm × 200 pulses) for the elimination of LLC1 tumours in C57BL/6J mice is performed. We show the efficiency of nsECT (200 ns and 700 ns delivered at 1 kHz and 1 MHz) for the elimination of tumours in mice and increase of their survival. The dynamics of the immunomodulatory effects were observed after electrochemotherapy by investigating immune cell populations and antitumour antibodies at different timepoints after the treatment. ECT treatment resulted in an increased percentage of CD4+ T, splenic memory B and tumour-associated dendritic cell subsets. Moreover, increased levels of antitumour IgG antibodies after ECT treatment were detected. Based on the time-dependent study results, nsECT treatment upregulated PD 1 expression on splenic CD4+ Tr1 cells, increased the expansion of splenic CD8+ T, CD4+CD8+ T, plasma cells and the proportion of tumour-associated pro inflammatory macrophages. The Lin- population of immune cells that was increased in the spleens and tumour after nsECT was identified. It was shown that nsECT prolonged survival of the treated mice and induced significant changes in the immune system, which shows a promising alliance of nanosecond electrochemotherapy and immunotherapy.
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Azeem S, Rashid M, Aljuboori Z. Use of nanosecond pulsed electric fields in brain tumors. Surg Neurol Int 2022; 13:286. [PMID: 35855162 PMCID: PMC9282771 DOI: 10.25259/sni_296_2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 06/21/2022] [Indexed: 11/15/2022] Open
Affiliation(s)
- Saleha Azeem
- Medical Student, King Edward Medical College, Lahore, Pakistan,
| | - Mohsin Rashid
- Medical Student, King Edward Medical College, Lahore, Pakistan,
| | - Zaid Aljuboori
- Department of Neurosurgery, University of Washington, Seattle, Washington, United States
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4
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Shevtsov M, Kaesler S, Posch C, Multhoff G, Biedermann T. Magnetic nanoparticles in theranostics of malignant melanoma. EJNMMI Res 2021; 11:127. [PMID: 34905138 PMCID: PMC8671576 DOI: 10.1186/s13550-021-00868-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 11/28/2021] [Indexed: 12/14/2022] Open
Abstract
Malignant melanoma is an aggressive tumor with a tendency to metastasize early and with an increasing incidence worldwide. Although in early stage, melanoma is well treatable by excision, the chances of cure and thus the survival rate decrease dramatically after metastatic spread. Conventional treatment options for advanced disease include surgical resection of metastases, chemotherapy, radiation, targeted therapy and immunotherapy. Today, targeted kinase inhibitors and immune checkpoint blockers have for the most part replaced less effective chemotherapies. Magnetic nanoparticles as novel agents for theranostic purposes have great potential in the treatment of metastatic melanoma. In the present review, we provide a brief overview of treatment options for malignant melanoma with different magnetic nanocarriers for theranostics. We also discuss current efforts of designing magnetic particles for combined, multimodal therapies (e.g., chemotherapy, immunotherapy) for malignant melanoma.
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Affiliation(s)
- Maxim Shevtsov
- Central Institute for Translational Cancer Research (TranslaTUM), Radiation Immuno-Oncology Group, Klinikum rechts der Isar, School of Medicine, Technical University Munich (TUM), Einstein Str. 25, 81675, Munich, Germany
- Laboratory of Biomedical Cell Technologies, Far Eastern Federal University, Primorsky Krai, 690091, Vladivostok, Russia
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str, Saint Petersburg, Russian Federation, 197341
| | - Susanne Kaesler
- Department of Dermatology and Allergology, Klinikum rechts der Isar, School of Medicine, Technical University Munich (TUM), Biedersteinerstrasse 29, 80802, Munich, Germany
| | - Christian Posch
- Department of Dermatology and Allergology, Klinikum rechts der Isar, School of Medicine, Technical University Munich (TUM), Biedersteinerstrasse 29, 80802, Munich, Germany
| | - Gabriele Multhoff
- Central Institute for Translational Cancer Research (TranslaTUM), Radiation Immuno-Oncology Group, Klinikum rechts der Isar, School of Medicine, Technical University Munich (TUM), Einstein Str. 25, 81675, Munich, Germany
- Department of Radiation Oncology, Klinikum rechts der Isar, School of Medicine, Technical University Munich (TUM), Ismaninger Str. 22, 81675, Munich, Germany
| | - Tilo Biedermann
- Department of Dermatology and Allergology, Klinikum rechts der Isar, School of Medicine, Technical University Munich (TUM), Biedersteinerstrasse 29, 80802, Munich, Germany.
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5
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Jenkins EPW, Finch A, Gerigk M, Triantis IF, Watts C, Malliaras GG. Electrotherapies for Glioblastoma. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2100978. [PMID: 34292672 PMCID: PMC8456216 DOI: 10.1002/advs.202100978] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 05/20/2021] [Indexed: 05/08/2023]
Abstract
Non-thermal, intermediate frequency (100-500 kHz) electrotherapies present a unique therapeutic strategy to treat malignant neoplasms. Here, pulsed electric fields (PEFs) which induce reversible or irreversible electroporation (IRE) and tumour-treating fields (TTFs) are reviewed highlighting the foundations, advances, and considerations of each method when applied to glioblastoma (GBM). Several biological aspects of GBM that contribute to treatment complexity (heterogeneity, recurrence, resistance, and blood-brain barrier(BBB)) and electrophysiological traits which are suggested to promote glioma progression are described. Particularly, the biological responses at the cellular and molecular level to specific parameters of the electrical stimuli are discussed offering ways to compare these parameters despite the lack of a universally adopted physical description. Reviewing the literature, a disconnect is found between electrotherapy techniques and how they target the biological complexities of GBM that make treatment difficult in the first place. An attempt is made to bridge the interdisciplinary gap by mapping biological characteristics to different methods of electrotherapy, suggesting important future research topics and directions in both understanding and treating GBM. To the authors' knowledge, this is the first paper that attempts an in-tandem assessment of the biological effects of different aspects of intermediate frequency electrotherapy methods, thus offering possible strategies toward GBM treatment.
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Affiliation(s)
- Elise P. W. Jenkins
- Division of Electrical EngineeringDepartment of EngineeringUniversity of CambridgeCambridgeCB3 0FAUK
| | - Alina Finch
- Institute of Cancer and Genomic ScienceUniversity of BirminghamBirminghamB15 2TTUK
| | - Magda Gerigk
- Division of Electrical EngineeringDepartment of EngineeringUniversity of CambridgeCambridgeCB3 0FAUK
| | - Iasonas F. Triantis
- Department of Electrical and Electronic EngineeringCity, University of LondonLondonEC1V 0HBUK
| | - Colin Watts
- Institute of Cancer and Genomic ScienceUniversity of BirminghamBirminghamB15 2TTUK
| | - George G. Malliaras
- Division of Electrical EngineeringDepartment of EngineeringUniversity of CambridgeCambridgeCB3 0FAUK
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6
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Kundeková B, Máčajová M, Meta M, Čavarga I, Bilčík B. Chorioallantoic Membrane Models of Various Avian Species: Differences and Applications. BIOLOGY 2021; 10:biology10040301. [PMID: 33917385 PMCID: PMC8067367 DOI: 10.3390/biology10040301] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 03/31/2021] [Accepted: 04/01/2021] [Indexed: 12/11/2022]
Abstract
The chorioallantoic membrane model (CAM) of an avian embryo is used as an experimental model in various fields of research, including angiogenesis research and drug testing, xenografting and cancer research, and other scientific and commercial disciplines in microbiology, biochemistry, cosmetics, etc. It is a low-cost, low-maintenance, and well-available in vivo animal model that is non-sentient and can be used as an alternative for other mammal experimental models. It respects the principles of the "3R" rule (Replacement, Reduction, and Refinement)-conditions set out for scientific community providing an essential framework for conducting a more human animal research, which is also in line with constantly raising public awareness of welfare and the ethics related to the use of animal experimental models. In this review, we describe the chorioallantoic membrane of an avian embryo, focusing on its properties and development, its advantages and disadvantages as an experimental model, and the possibilities of its application in various fields of biological research. Since the most common chicken CAM model is already well known and described in many publications, we are particularly focusing on the advantages and application of less known avian species that are used for the CAM model-quail, turkey, and duck.
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Affiliation(s)
- Barbora Kundeková
- Institute of Animal Biochemistry and Genetics, CBs SAS, 840 05 Bratislava, Slovakia; (M.M.); (M.M.); (I.Č.); (B.B.)
- Correspondence:
| | - Mariana Máčajová
- Institute of Animal Biochemistry and Genetics, CBs SAS, 840 05 Bratislava, Slovakia; (M.M.); (M.M.); (I.Č.); (B.B.)
| | - Majlinda Meta
- Institute of Animal Biochemistry and Genetics, CBs SAS, 840 05 Bratislava, Slovakia; (M.M.); (M.M.); (I.Č.); (B.B.)
| | - Ivan Čavarga
- Institute of Animal Biochemistry and Genetics, CBs SAS, 840 05 Bratislava, Slovakia; (M.M.); (M.M.); (I.Č.); (B.B.)
- St. Elizabeth Cancer Institute, 812 50 Bratislava, Slovakia
| | - Boris Bilčík
- Institute of Animal Biochemistry and Genetics, CBs SAS, 840 05 Bratislava, Slovakia; (M.M.); (M.M.); (I.Č.); (B.B.)
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7
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Taibi A, Perrin ML, Albouys J, Jacques J, Yardin C, Durand-Fontanier S, Bardet SM. 10 ns PEFs induce a histological response linked to cell death and cytotoxic T-lymphocytes in an immunocompetent mouse model of peritoneal metastasis. Clin Transl Oncol 2021; 23:1220-1237. [PMID: 33677709 DOI: 10.1007/s12094-020-02525-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 11/10/2020] [Indexed: 11/24/2022]
Abstract
PURPOSE The application of nanosecond pulsed electric fields (nsPEFs) could be an effective therapeutic strategy for peritoneal metastasis (PM) from colorectal cancer (CRC). The aim of this study was to evaluate in vitro the sensitivity of CT-26 CRC cells to nsPEFs in combination with chemotherapeutic agents, and to observe the subsequent in vivo histologic response. METHODS In vitro cellular assays were performed to assess the effects of exposure to 1, 10, 100, 500 and 1000 10 ns pulses in a cuvette or bi-electrode system at 10 and 200 Hz. nsPEF treatment was applied alone or in combination with oxaliplatin and mitomycin. Cell death was detected by flow cytometry, and permeabilization and intracellular calcium levels by fluorescent confocal microscopy after treatment. A mouse model of PM was used to investigate the effects of in vivo exposure to pulses delivered using a bi-electrode system; morphological changes in mitochondria were assessed by electron microscopy. Fibrosis was measured by multiphoton microscopy, while the histological response (HR; hematoxylin-eosin-safran stain), proliferation (KI67, DAPI), and expression of immunological factors (CD3, CD4, CD8) were evaluated by classic histology. RESULTS 10 ns PEFs exerted a dose-dependent effect on CT-26 cells in vitro and in vivo, by inducing cell death and altering mitochondrial morphology after plasma membrane permeabilization. In vivo results indicated a specific CD8+ T cell immune response, together with a strong HR according to the Peritoneal Regression Grading Score (PRGS). CONCLUSIONS The effects of nsPEFs on CT-26 were confirmed in a mouse model of CRC with PM.
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Affiliation(s)
- A Taibi
- Digestive Surgery Department, Limoges University Hospital, Limoges, France.,Univ. Limoges, CNRS, XLIM, UMR 7252, 87000, Limoges, France
| | - M-L Perrin
- Univ. Limoges, CNRS, XLIM, UMR 7252, 87000, Limoges, France
| | - J Albouys
- Univ. Limoges, CNRS, XLIM, UMR 7252, 87000, Limoges, France.,Gastroenterology Department, Limoges University Hospital, Limoges, France
| | - J Jacques
- Univ. Limoges, CNRS, XLIM, UMR 7252, 87000, Limoges, France.,Gastroenterology Department, Limoges University Hospital, Limoges, France
| | - C Yardin
- Univ. Limoges, CNRS, XLIM, UMR 7252, 87000, Limoges, France.,Cytology and Histology Department, Limoges University Hospital, Limoges, France
| | - S Durand-Fontanier
- Digestive Surgery Department, Limoges University Hospital, Limoges, France.,Univ. Limoges, CNRS, XLIM, UMR 7252, 87000, Limoges, France
| | - S M Bardet
- Univ. Limoges, CNRS, XLIM, UMR 7252, 87000, Limoges, France.
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8
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Hobisch MA, Zabler S, Bardet SM, Zankel A, Nypelö T, Eckhart R, Bauer W, Spirk S. How cellulose nanofibrils and cellulose microparticles impact paper strength-A visualization approach. Carbohydr Polym 2020; 254:117406. [PMID: 33357893 DOI: 10.1016/j.carbpol.2020.117406] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 11/07/2020] [Accepted: 11/12/2020] [Indexed: 11/28/2022]
Abstract
Cellulosic nanomaterials are in the focus of academia and industry to realize light-weight biobased materials with remarkable strength. While the effect is well known, the distribution of these nanomaterials are less explored, particularly for paper sheets. Here, we explore the 3D distribution of micro and nanosized cellulosic particles in paper sheets and correlate their extent of fibrillation to the distribution inside the sheets and subsequently to paper properties. To overcome challenges with contrast between the particles and the matrix, we attached probes on the cellulose nano/microparticles, either by covalent attachment of fluorescent dyes or by physical deposition of cobalt ferrite nanoparticles. The increased contrast enabled visualization of the micro and nanosized particles inside the paper matrix using multiphoton microscopy, X-ray microtomography and SEM-EDX. The results indicate that fibrillary fines enrich at pores and fiber-fiber junctions, thereby increasing the relative bonded area between fibers to enhance paper strength while CNF seems to additionally form an inner 3D network.
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Affiliation(s)
- Mathias A Hobisch
- Institute of Bioproducts and Paper Technology, Graz University of Technology, A-8010 Graz, Austria
| | - Simon Zabler
- Fraunhofer IIS, Josef-Martin-Weg 63, 97074 Würzburg, Germany
| | - Sylvia M Bardet
- CNRS, XLIM, UMR 7252, Université Limoges, F-87000 Limoges, France
| | - Armin Zankel
- Institute of Electron Microscopy and Nanoanalysis, NAWI Graz, Graz University of Technology and Centre for Electron Microscopy, Steyrergasse 17, 8010 Graz, Austria
| | - Tiina Nypelö
- Wallenberg Wood Science Center, Chalmers University of Technology, 412 96 Gothenburg, Sweden; Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
| | - Rene Eckhart
- Institute of Bioproducts and Paper Technology, Graz University of Technology, A-8010 Graz, Austria
| | - Wolfgang Bauer
- Institute of Bioproducts and Paper Technology, Graz University of Technology, A-8010 Graz, Austria
| | - Stefan Spirk
- Institute of Bioproducts and Paper Technology, Graz University of Technology, A-8010 Graz, Austria.
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Graybill PM, Davalos RV. Cytoskeletal Disruption after Electroporation and Its Significance to Pulsed Electric Field Therapies. Cancers (Basel) 2020; 12:E1132. [PMID: 32366043 PMCID: PMC7281591 DOI: 10.3390/cancers12051132] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/24/2020] [Accepted: 04/27/2020] [Indexed: 12/18/2022] Open
Abstract
Pulsed electric fields (PEFs) have become clinically important through the success of Irreversible Electroporation (IRE), Electrochemotherapy (ECT), and nanosecond PEFs (nsPEFs) for the treatment of tumors. PEFs increase the permeability of cell membranes, a phenomenon known as electroporation. In addition to well-known membrane effects, PEFs can cause profound cytoskeletal disruption. In this review, we summarize the current understanding of cytoskeletal disruption after PEFs. Compiling available studies, we describe PEF-induced cytoskeletal disruption and possible mechanisms of disruption. Additionally, we consider how cytoskeletal alterations contribute to cell-cell and cell-substrate disruption. We conclude with a discussion of cytoskeletal disruption-induced anti-vascular effects of PEFs and consider how a better understanding of cytoskeletal disruption after PEFs may lead to more effective therapies.
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Affiliation(s)
- Philip M. Graybill
- BEMS Lab, Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA 24061, USA;
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA
| | - Rafael V. Davalos
- BEMS Lab, Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA 24061, USA;
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA
- Virginia Tech–Wake Forest University, School of Biomedical Engineering and Sciences, Blacksburg, VA 24061, USA
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10
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Bardet SM, Cortese J, Blanc R, Mounayer C, Rouchaud A. Multiphoton microscopy for pre-clinical evaluation of flow-diverter stents for treating aneurysms. J Neuroradiol 2020; 48:200-206. [PMID: 32205257 DOI: 10.1016/j.neurad.2020.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 03/09/2020] [Accepted: 03/10/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Conventional histological analyses are the gold standard for the study of aneurysms and vascular pathologies in pre-clinical research. Over the past decade, in vivo and ex vivo imaging using multiphoton microscopy have emerged as powerful pre-clinical tools for detailed tissue analyses that can assess morphology, the extracellular matrix (ECM), cell density and vascularisation. Multiphoton microscopy allows for deeper tissue penetration with minor phototoxicity. OBJECTIVE The present study aimed to demonstrate the current status of multimodality imaging, including multiphoton microscopy, for detailed analyses of neo-endothelialisation and ECM evolution after flow-diverter stent (FDS) treatment in an experimental rabbit model of aneurysms. METHODS Multiphoton microscopy tools for assessing autofluorescence and second harmonic generation (SHG) signals from biological tissues were used to evaluate the endovascular treatment of intracranial aneurysms in an animal model of aneurysms (pig, rabbit). Results from multiphoton microscopy were compared to those from standard histology, electronic and bright field microscopy. CONCLUSIONS The present study describes novel evaluation modes based on multiphoton microscopy for visualising tissue morphology (e.g., collagen, elastin, and cells) to qualify and quantify the extent of neo-intimal formation of covered arteries and device integration into the arterial wall using a rabbit model of intracranial aneurysms treated with FDS.
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Affiliation(s)
- Sylvia M Bardet
- University of Limoges, 123, avenue Albert-Thomas, XLIM UMR CNRS 7252, 87060 Limoges, France.
| | - Jonathan Cortese
- Bichat University Hospital, INSERM U1148-LVTS, Paris, France; Bicetre Hospital, Department of Interventional Neuroradiology, Paris, France
| | - Raphaël Blanc
- Department of Interventional Neuroradiology, Fondation Ophtalmologique Adolphe-de-Rothschild, Paris, France
| | - Charbel Mounayer
- University of Limoges, 123, avenue Albert-Thomas, XLIM UMR CNRS 7252, 87060 Limoges, France; University Hospital, Department of Interventional Neuroradiology, Limoges, France
| | - Aymeric Rouchaud
- University of Limoges, 123, avenue Albert-Thomas, XLIM UMR CNRS 7252, 87060 Limoges, France; University Hospital, Department of Interventional Neuroradiology, Limoges, France.
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11
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Xu X, Chen Y, Zhang R, Miao X, Chen X. Activation of Anti-tumor Immune Response by Ablation of HCC with Nanosecond Pulsed Electric Field. J Clin Transl Hepatol 2018; 6:85-88. [PMID: 29577034 PMCID: PMC5863003 DOI: 10.14218/jcth.2017.00042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 09/01/2017] [Accepted: 09/06/2017] [Indexed: 12/15/2022] Open
Abstract
Locoregional therapy is playing an increasingly important role in the non-surgical management of hepatocellular carcinoma (HCC). The novel technique of non-thermal electric ablation by nanosecond pulsed electric field has been recognized as a potential locoregional methodology for indicated HCC. This manuscript explores the most recent studies to indicate its unique anti-tumor immune response. The possible immune mechanism, termed as nano-pulse stimulation, was also analyzed.
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Affiliation(s)
- Xiaobo Xu
- Collaborative Innovation Center for Diagnosis Treatment of Infectious Diseases, Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yiling Chen
- Department of Anatomy, Tianjin Medical University, Tianjin, China
| | - Ruiqing Zhang
- Hepatobiliary & Hydatid Department, Digestive and Vascular Surgery Centre, Xinjiang Key Laboratory of Echinococcosis, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Xudong Miao
- Department of Orthopedics, Second Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xinhua Chen
- Collaborative Innovation Center for Diagnosis Treatment of Infectious Diseases, Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang, China
- *Correspondence to: Xinhua Chen, Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital Zhejiang University School of Medicine, 79 Qingchun Road, Hangzhou, Zhejiang 310003, China. Tel: +86-571-87236570, Fax: +86-571-87236466, E-mail:
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12
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Merla C, Liberti M, Marracino P, Muscat A, Azan A, Apollonio F, Mir LM. A wide-band bio-chip for real-time optical detection of bioelectromagnetic interactions with cells. Sci Rep 2018; 8:5044. [PMID: 29568067 PMCID: PMC5864909 DOI: 10.1038/s41598-018-23301-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 03/07/2018] [Indexed: 01/01/2023] Open
Abstract
The analytical and numerical design, implementation, and experimental validation of a new grounded closed coplanar waveguide for wide-band electromagnetic exposures of cells and their optical detection in real-time is reported. The realized device fulfills high-quality requirements for novel bioelectromagnetic experiments, involving elevated temporal and spatial resolutions. Excellent performances in terms of matching bandwidth (less than -10 dB up to at least 3 GHz), emission (below 1 × 10-6 W/m2) and efficiency (around 1) have been obtained as revealed by both numerical simulations and experimental measurements. A low spatial electric field inhomogeneity (coefficient of variation of around 10 %) has been achieved within the cell solutions filling the polydimethylsiloxane reservoir of the conceived device. This original bio-chip based on the grounded closed coplanar waveguide concept opens new possibilities for the development of controlled experiments combining electromagnetic exposures and sophisticated imaging using optical spectroscopic techniques.
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Affiliation(s)
- Caterina Merla
- Laboratory of Vectorology and Anticancer Therapies, UMR 8203, CNRS, Univ. Paris-Sud, Gustave Roussy, Université Paris-Saclay, 114 rue E. Vaillant, 94805, Villejuif, France. .,National Italian Agency for New Technology Energy and Sustainable Economic Development (ENEA), Division of Health Protection Technologies, via Anguillarese 301, 00123, Rome, Italy.
| | - Micaela Liberti
- "Sapienza" University of Rome, Department of Information Engineering Electronics and Telecommunications, via Eudossiana 18, 00184, Rome, Italy
| | - Paolo Marracino
- "Sapienza" University of Rome, Department of Information Engineering Electronics and Telecommunications, via Eudossiana 18, 00184, Rome, Italy
| | - Adeline Muscat
- Laboratory of Vectorology and Anticancer Therapies, UMR 8203, CNRS, Univ. Paris-Sud, Gustave Roussy, Université Paris-Saclay, 114 rue E. Vaillant, 94805, Villejuif, France
| | - Antoine Azan
- Laboratory of Vectorology and Anticancer Therapies, UMR 8203, CNRS, Univ. Paris-Sud, Gustave Roussy, Université Paris-Saclay, 114 rue E. Vaillant, 94805, Villejuif, France
| | - Francesca Apollonio
- "Sapienza" University of Rome, Department of Information Engineering Electronics and Telecommunications, via Eudossiana 18, 00184, Rome, Italy
| | - Lluis M Mir
- Laboratory of Vectorology and Anticancer Therapies, UMR 8203, CNRS, Univ. Paris-Sud, Gustave Roussy, Université Paris-Saclay, 114 rue E. Vaillant, 94805, Villejuif, France
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Carr L, Bardet SM, Arnaud-Cormos D, Leveque P, O'Connor RP. Visualisation of an nsPEF induced calcium wave using the genetically encoded calcium indicator GCaMP in U87 human glioblastoma cells. Bioelectrochemistry 2018; 119:68-75. [DOI: 10.1016/j.bioelechem.2017.09.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 08/23/2017] [Accepted: 09/07/2017] [Indexed: 12/21/2022]
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Burke RC, Bardet SM, Carr L, Romanenko S, Arnaud-Cormos D, Leveque P, O'Connor RP. Nanosecond pulsed electric fields depolarize transmembrane potential via voltage-gated K+, Ca2+ and TRPM8 channels in U87 glioblastoma cells. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:2040-2050. [DOI: 10.1016/j.bbamem.2017.07.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 07/05/2017] [Accepted: 07/05/2017] [Indexed: 12/20/2022]
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15
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Delivery devices for exposure of biological cells to nanosecond pulsed electric fields. Med Biol Eng Comput 2017; 56:85-97. [PMID: 28674780 DOI: 10.1007/s11517-017-1676-0] [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: 11/17/2016] [Accepted: 06/25/2017] [Indexed: 12/11/2022]
Abstract
In this paper, delivery devices for nanosecond pulsed electric field exposure of biological samples in direct contact with electrodes or isolated are presented and characterized. They are based on a modified electroporation cuvette and two transverse electromagnetic cells (TEM cells). The devices were used to apply pulses with high intensity (4.5 kV) and short durations (3 and 13 ns). The delivery devices were electromagnetically characterized in the frequency and time domains. Field intensities of around 5, 0.5, and 12 MV m-1 were obtained by numerical simulations of the biological sample positioned in the three delivery devices. Two delivery systems had a homogenous electric field spatial distribution, and one was adapted to permit a highly localized exposure in the vicinity of a needle. Experimental biological investigations were carried out at different field intensities for five cancer cell lines. The results using flow cytometry showed that cells kept polarized mitochondrial membrane but lost plasma membrane integrity following a dose-response trend after exposure to different electric field intensities. Certain cell types (U87, MCF7) showed higher sensitivities to nsPEFs than other lines tested.
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Zhang R, Aji T, Shao Y, Jiang T, Yang L, Lv W, Chen Y, Chen X, Wen H. Nanosecond pulsed electric field (nsPEF) disrupts the structure and metabolism of human Echinococcus granulosus protoscolex in vitro with a dose effect. Parasitol Res 2017; 116:1345-1351. [PMID: 28236173 DOI: 10.1007/s00436-017-5412-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 02/14/2017] [Indexed: 01/28/2023]
Abstract
The number of interventional treatments for hepatic cystic echinococcosis is increasing, but the chemicals or high temperatures used in these methodologies cause biliary complications, thus limiting their clinical applications. This experimental study aimed to apply a novel, non-thermal, non-chemical ablation method termed nanosecond pulsed electric field (nsPEF) for the treatment of human hepatic cystic echinococcosis. The nsPEF treatment parameters against protoscolices from human hepatic cystic echinococcosis were optimized in vitro. The efficacy and mechanism of nsPEF treatment were also investigated. Fresh protoscolices were isolated from human hepatic cystic echinococcosis and were exposed to 300 ns of nsPEF with different field strengths (0, 7, 14, 21, and 29 kV/cm) and pulse numbers (50 and 100 pulses). Then, the viability of the nsPEF-treated protoscolices was evaluated in vitro. Morphological and ultra-structural changes were visualized with H&E staining and scanning electron microscopy. The membrane enzyme activity of alkaline phosphatase (AP) and gamma-glutamyl-transpeptidase (GGT) was measured. nsPEF caused dose-dependent protoscolex death. One-hundred pulses of nsPEF at 21 kV/cm or higher caused a significant increase in the death rate of protoscolices. nsPEF induced significant lethal damage with 50 pulses at 21 or 29 kV/cm and with 100 pulses at 14, 21, or 29 kV/cm, accompanied by morphological destruction and increased levels of AP and GGT membrane enzymes. Thus, nsPEF induced dose-dependent protoscolex mortality and caused destruction of protoscolices and increased membrane enzymes. The mechanism may involve direct damage to the membrane structures of the protoscolices, promoting enzyme exhaustion and disruption of metabolism.
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Affiliation(s)
- Ruiqing Zhang
- Hepatobiliary and Hydatid Department, Digestive and Vascular Surgery Centre, Xinjiang Key Laboratory of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, #137 Liyushan Road, Urumqi, Xinjiang, 830054, China
| | - Tuerganaili Aji
- Hepatobiliary and Hydatid Department, Digestive and Vascular Surgery Centre, Xinjiang Key Laboratory of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, #137 Liyushan Road, Urumqi, Xinjiang, 830054, China
| | - Yingmei Shao
- Hepatobiliary and Hydatid Department, Digestive and Vascular Surgery Centre, Xinjiang Key Laboratory of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, #137 Liyushan Road, Urumqi, Xinjiang, 830054, China
| | - Tiemin Jiang
- Hepatobiliary and Hydatid Department, Digestive and Vascular Surgery Centre, Xinjiang Key Laboratory of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, #137 Liyushan Road, Urumqi, Xinjiang, 830054, China
| | - Lei Yang
- Hepatobiliary and Hydatid Department, Digestive and Vascular Surgery Centre, Xinjiang Key Laboratory of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, #137 Liyushan Road, Urumqi, Xinjiang, 830054, China
| | - Weimin Lv
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University, #79 Qingchun Road, Zhejiang, Hangzhou, 310003, China
| | - Yonggang Chen
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University, #79 Qingchun Road, Zhejiang, Hangzhou, 310003, China
| | - Xinhua Chen
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University, #79 Qingchun Road, Zhejiang, Hangzhou, 310003, China.
| | - Hao Wen
- Hepatobiliary and Hydatid Department, Digestive and Vascular Surgery Centre, Xinjiang Key Laboratory of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, #137 Liyushan Road, Urumqi, Xinjiang, 830054, China.
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