1
|
Qian J, Ding L, Wu Q, Yu X, Li Q, Gu Y, Wang S, Mao J, Liu X, Li B, Pan C, Wang W, Wang Y, Liu J, Qiao Y, Xie H, Chen T, Ge J, Zhou L, Yin S, Zheng S. Nanosecond pulsed electric field stimulates CD103 + DC accumulation in tumor microenvironment via NK-CD103 + DC crosstalk. Cancer Lett 2024; 593:216514. [PMID: 38036040 DOI: 10.1016/j.canlet.2023.216514] [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: 09/14/2023] [Revised: 11/11/2023] [Accepted: 11/21/2023] [Indexed: 12/02/2023]
Abstract
CD103+ DC is crucial for antitumor immune response. As a promising local therapy on cancers, nanosecond pulsed electric field (nsPEF) has been widely reported to stimulate anti-tumor immune response, but the underlying relationship between intratumoral CD103+ DC and nsPEF treatment remains enigmatic. Here, we focused on the behavior of CD103+ DC in response to nsPEF treatment and explored the underlying mechanism. We found that the nsPEF treatment led to the activation and accumulation of CD103+ DC in tumor. Depletion of CD103+ DC via Batf3-/- mice demonstrated CD103+ DC was necessary for intratumoral CD8+ T cell infiltration and activation in response to nsPEF treatment. Notably, NK cells recruited CD103+ DC into nsPEF-treated tumor through CCL5. Inflammatory array revealed CD103+ DC-derived IL-12 mediated the CCL5 secretion in NK cells. In addition, the boosted activation and infiltration of intratumoral CD103+ DC were abolished by cGAS-STING pathway inhibition, following IL-12 and CCL5 decreasing. Furthermore, nsPEF treatment promoting CD103+ DC-mediated antitumor response enhanced the effects of CD47 blockade strategy. Together, this study uncovers an unprecedented role for CD103+ DC in nsPEF treatment-elicited antitumor immune response and elucidates the underlying mechanisms.
Collapse
Affiliation(s)
- Junjie Qian
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China
| | - Limin Ding
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China
| | - Qinchuan Wu
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China
| | - Xizhi Yu
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China
| | - Qiyong Li
- Department of Hepatobiliary and Pancreatic Surgery, Department of Liver Transplantation, Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University Shulan International Medical College, Hangzhou, 310000, China
| | - Yangjun Gu
- Department of Hepatobiliary and Pancreatic Surgery, Department of Liver Transplantation, Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University Shulan International Medical College, Hangzhou, 310000, China
| | - Shuai Wang
- Department of Hepatobiliary and Pancreatic Surgery, Department of Liver Transplantation, Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University Shulan International Medical College, Hangzhou, 310000, China
| | - Jing Mao
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China
| | - Xi Liu
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China
| | - Bohan Li
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China
| | - Caixu Pan
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China
| | - Wenchao Wang
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China
| | - Yubo Wang
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China
| | - Jianpeng Liu
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China
| | - Yiting Qiao
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China
| | - Haiyang Xie
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China
| | - Tianchi Chen
- Department of of Vascular Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Jiangzhen Ge
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China
| | - Lin Zhou
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China.
| | - Shengyong Yin
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China.
| | - Shusen Zheng
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Key Laboratory of Organ Transplantation, Zhejiang Province, China; Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment for Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences(2019RU019), China; State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, China; Department of Hepatobiliary and Pancreatic Surgery, Department of Liver Transplantation, Shulan (Hangzhou) Hospital Affiliated to Zhejiang Shuren University Shulan International Medical College, Hangzhou, 310000, China.
| |
Collapse
|
2
|
Zhou H, Wang Z, Dong Y, Alhaskawi A, Tu T, Hasan Abdullah Ezzi S, Goutham Kota V, Hasan Abdulla Hasan Abdulla M, Li P, Wu B, Chen Y, Lu H. New advances in treatment of skin malignant tumors with nanosecond pulsed electric field: A literature review. Bioelectrochemistry 2023; 150:108366. [PMID: 36641842 DOI: 10.1016/j.bioelechem.2023.108366] [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: 08/21/2022] [Revised: 12/05/2022] [Accepted: 01/03/2023] [Indexed: 01/07/2023]
Abstract
BACKGROUND Nanosecond pulsed electric field, with its unique bioelectric effect, has shown broad application potential in the field of tumor therapy, especially in malignant tumors and skin tumors. MAIN BODY In this paper, we discuss the therapeutic effects and mechanisms of nanosecond pulsed electric field on three common skin cancers, namely, malignant melanoma, squamous cell carcinoma and basal cell carcinoma, as well as its application to other benign skin diseases and future development and improvement directions. CONCLUSION In general, nanosecond pulsed electric field mainly exerts its ablative effect on tumors through subcellular membrane electroporation effect. It is cell type-specific, has less thermal damage, and can have synergistic effect with chemotherapy drugs, making it a very promising new method for tumor treatment.
Collapse
Affiliation(s)
- Haiying Zhou
- Department of Orthopedics, The First Affiliated Hospital, College of Medicine, Zhejiang University, #79 Qingchun Road, Hangzhou, Zhejiang Province 310003, PR China
| | - Zewei Wang
- Zhejiang University School of Medicine, #866 Yuhangtang Road, Hangzhou, Zhejiang Province 310058, PR China
| | - Yanzhao Dong
- Department of Orthopedics, The First Affiliated Hospital, College of Medicine, Zhejiang University, #79 Qingchun Road, Hangzhou, Zhejiang Province 310003, PR China
| | - Ahmad Alhaskawi
- Department of Orthopedics, The First Affiliated Hospital, College of Medicine, Zhejiang University, #79 Qingchun Road, Hangzhou, Zhejiang Province 310003, PR China
| | - Tian Tu
- Department of Plastic and Aesthetic Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, #79 Qingchun Road, Hangzhou, Zhejiang Province 310003, PR China
| | | | - Vishnu Goutham Kota
- Zhejiang University School of Medicine, #866 Yuhangtang Road, Hangzhou, Zhejiang Province 310058, PR China
| | | | - Pengfei Li
- Department of Plastic and Aesthetic Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, #79 Qingchun Road, Hangzhou, Zhejiang Province 310003, PR China
| | - Bin Wu
- Key Laboratory of Pulsed Power Translational Medicine of Zhejiang Province, Ruidi Biotech Ltd. #2959 Yuhangtang Road, Hangzhou, Zhejiang Province 310000, PR China
| | - Yonggang Chen
- Key Laboratory of Pulsed Power Translational Medicine of Zhejiang Province, Ruidi Biotech Ltd. #2959 Yuhangtang Road, Hangzhou, Zhejiang Province 310000, PR China
| | - Hui Lu
- Department of Orthopedics, The First Affiliated Hospital, College of Medicine, Zhejiang University, #79 Qingchun Road, Hangzhou, Zhejiang Province 310003, PR China; Alibaba-Zhejiang University Joint Research Center of Future Digital Healthcare, Zhejiang University, #866 Yuhangtang Road, Hangzhou, Zhejiang Province 310058, PR China.
| |
Collapse
|
3
|
Urrutia-Baca V, Hernández-Hernández S, Martínez L, Dávila-Vega J, Chuck-Hernández C. The Role of Probiotics in Dairy Foods and Strategies to Evaluate Their Functional Modifications. FOOD REVIEWS INTERNATIONAL 2023. [DOI: 10.1080/87559129.2023.2172426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Affiliation(s)
- V.H Urrutia-Baca
- Tecnologico de Monterrey, The Institute for Obesity Research, Monterrey, NL, México
| | | | - L.M. Martínez
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, NL, México
| | - J.P Dávila-Vega
- Tecnologico de Monterrey, The Institute for Obesity Research, Monterrey, NL, México
| | - C. Chuck-Hernández
- Tecnologico de Monterrey, The Institute for Obesity Research, Monterrey, NL, México
| |
Collapse
|
4
|
Kim V, Semenov I, Kiester AS, Keppler MA, Ibey BL, Bixler JN, Pakhomov AG. Action spectra and mechanisms of (in) efficiency of bipolar electric pulses at electroporation. Bioelectrochemistry 2023; 149:108319. [PMID: 36375440 PMCID: PMC9729435 DOI: 10.1016/j.bioelechem.2022.108319] [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: 08/26/2022] [Revised: 10/19/2022] [Accepted: 11/04/2022] [Indexed: 11/09/2022]
Abstract
The reversal of the electric field direction inhibits various biological effects of nanosecond electric pulses (nsEP). This feature, known as "bipolar cancellation," enables interference targeting of nsEP bioeffects remotely from stimulating electrodes, for prospective applications such as precise cancer ablation and non-invasive deep brain stimulation. This study was undertaken to achieve the maximum cancellation of electroporation, by quantifying the impact of the pulse shape, duration, number, and repetition rate across a broad range of electric field strengths. Monolayers of endothelial cells (BPAE) were electroporated in a non-uniform electric field. Cell membrane permeabilization was quantified by YO-PRO-1 (YP) dye uptake and correlated to local electric field strength. For most conditions tested, adding an opposite polarity phase reduced YP uptake by 50-80 %. The strongest cancellation, which reduced YP uptake by 95-97 %, was accomplished by adding a 50 % second phase to 600-ns pulses delivered at a high repetition rate of 833 kHz. Strobe photography of nanosecond kinetics of membrane potential in single CHO cells revealed the temporal summation of polarization by individual unipolar nsEP applied at sub-MHz rate, leading to enhanced electroporation. In contrast, there was no summation for bipolar pulses, and increasing their repetition rate suppressed electroporation. These new findings are discussed in the context of bipolar cancellation mechanisms and remote focusing applications.
Collapse
Affiliation(s)
- Vitalii Kim
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA
| | - Iurii Semenov
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA
| | - Allen S Kiester
- Bioeffects Division, Airman System Directorate, 711th Human Performance Wing, Air Force Research Laboratory, JBSA Fort Sam Houston, TX, USA
| | | | - Bennett L Ibey
- Bioeffects Division, Airman System Directorate, 711th Human Performance Wing, Air Force Research Laboratory, JBSA Fort Sam Houston, TX, USA
| | - Joel N Bixler
- Bioeffects Division, Airman System Directorate, 711th Human Performance Wing, Air Force Research Laboratory, JBSA Fort Sam Houston, TX, USA
| | - Andrei G Pakhomov
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA.
| |
Collapse
|
5
|
Sowa PW, Kiełbik AS, Pakhomov AG, Gudvangen E, Mangalanathan U, Adams V, Pakhomova ON. How to alleviate cardiac injury from electric shocks at the cellular level. Front Cardiovasc Med 2022; 9:1004024. [PMID: 36620647 PMCID: PMC9812960 DOI: 10.3389/fcvm.2022.1004024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
Electric shocks, the only effective therapy for ventricular fibrillation, also electroporate cardiac cells and contribute to the high-mortality post-cardiac arrest syndrome. Copolymers such as Poloxamer 188 (P188) are known to preserve the membrane integrity and viability of electroporated cells, but their utility against cardiac injury from cardiopulmonary resuscitation (CPR) remains to be established. We studied the time course of cell killing, mechanisms of cell death, and protection with P188 in AC16 human cardiomyocytes exposed to micro- or nanosecond pulsed electric field (μsPEF and nsPEF) shocks. A 3D printer was customized with an electrode holder to precisely position electrodes orthogonal to a cell monolayer in a nanofiber multiwell plate. Trains of nsPEF shocks (200, 300-ns pulses at 1.74 kV) or μsPEF shocks (20, 100-μs pulses at 300 V) produced a non-uniform electric field enabling efficient measurements of the lethal effect in a wide range of the electric field strength. Cell viability and caspase 3/7 expression were measured by fluorescent microscopy 2-24 h after the treatment. nsPEF shocks caused little or no caspase 3/7 activation; most of the lethally injured cells were permeable to propidium dye already at 2 h after the exposure. In contrast, μsPEF shocks caused strong activation of caspase 3/7 at 2 h and the number of dead cells grew up to 24 h, indicating the prevalence of the apoptotic death pathway. P188 at 0.2-1% reduced cell death, suggesting its potential utility in vivo to alleviate electric injury from defibrillation.
Collapse
Affiliation(s)
- Pamela W. Sowa
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, United States,Laboratory of Molecular and Experimental Cardiology, Heart Center Dresden, Technische Universität Dresden, Dresden, Germany,Department of Cardiology and Angiology, University Hospital Tübingen, Eberhard Karls University of Tübingen, Tübingen, Germany,*Correspondence: Pamela W. Sowa,
| | - Aleksander S. Kiełbik
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, United States,Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wrocław Medical University, Wrocław, Poland
| | - Andrei G. Pakhomov
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, United States
| | - Emily Gudvangen
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, United States
| | - Uma Mangalanathan
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, United States
| | - Volker Adams
- Laboratory of Molecular and Experimental Cardiology, Heart Center Dresden, Technische Universität Dresden, Dresden, Germany
| | - Olga N. Pakhomova
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, United States
| |
Collapse
|
6
|
Electroporation and Electrochemotherapy in Gynecological and Breast Cancer Treatment. Molecules 2022; 27:molecules27082476. [PMID: 35458673 PMCID: PMC9026735 DOI: 10.3390/molecules27082476] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 03/14/2022] [Accepted: 04/10/2022] [Indexed: 12/24/2022] Open
Abstract
Gynecological carcinomas affect an increasing number of women and are associated with poor prognosis. The gold standard treatment plan is mainly based on surgical resection and subsequent chemotherapy with cisplatin, 5-fluorouracil, anthracyclines, or taxanes. Unfortunately, this treatment is becoming less effective and is associated with many side effects that negatively affect patients’ physical and mental well-being. Electroporation based on tumor exposure to electric pulses enables reduction in cytotoxic drugs dose while increasing their effectiveness. EP-based treatment methods have received more and more interest in recent years and are the subject of a large number of scientific studies. Some of them show promising therapeutic potential without using any cytotoxic drugs or molecules already present in the human body (e.g., calcium electroporation). This literature review aims to present the fundamental mechanisms responsible for the course of EP-based therapies and the current state of knowledge in the field of their application in the treatment of gynecological neoplasms.
Collapse
|
7
|
Liu H, Zhao Y, Yao C, Schmelz EM, Davalos RV. Differential effects of nanosecond pulsed electric fields on cells representing progressive ovarian cancer. Bioelectrochemistry 2021; 142:107942. [PMID: 34509872 DOI: 10.1016/j.bioelechem.2021.107942] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 08/19/2021] [Accepted: 08/23/2021] [Indexed: 12/12/2022]
Abstract
Nanosecond pulsed electric fields (nsPEFs) may induce differential effects on tumor cells from different disease stages and could be suitable for treating tumors by preferentially targeting the late-stage/highly aggressive tumor cells. In this study, we investigated the nsPEF responses of mouse ovarian surface epithelial (MOSE) cells representing progressive ovarian cancer from benign to malignant stages and highly aggressive tumor-initiating-like cells. We established the cell-seeded 3D collagen scaffolds cultured with or without Nocodazole (eliminating the influence of cell proliferation on ablation outcome) to observe the ablation effects at 3 h and 24 h after treatment and compared the corresponding thresholds obtained by numerically calculated electric field distribution. The results showed that nsPEFs induced larger ablation areas with lower thresholds as the cell progress from benign, malignant to a highly aggressive phenotype. This differential effect was not affected by the different doubling times of the cells, as apparent by similar ablation induction after a synergistic treatment of nsPEFs and Nocodazole. The result suggests that nsPEFs could induce preferential ablation effects on highly aggressive and malignant ovarian cancer cells than their benign counterparts. This study provides an experimental basis for the research on killing malignant tumor cells via electrical treatments and may have clinical implications for treating tumors and preventing tumor recurrence after treatment.
Collapse
Affiliation(s)
- Hongmei Liu
- School of Electrical Engineering, Chongqing University, Chongqing 400033, China; Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA 24061, USA
| | - Yajun Zhao
- Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA 24061, USA; College of Electrical Engineering and Control Science, Nanjing Tech. University, Nanjing 211816, China
| | - Chenguo Yao
- School of Electrical Engineering, Chongqing University, Chongqing 400033, China.
| | - Eva M Schmelz
- Department of Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Rafael V Davalos
- Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA 24061, USA.
| |
Collapse
|
8
|
Batista Napotnik T, Polajžer T, Miklavčič D. Cell death due to electroporation - A review. Bioelectrochemistry 2021; 141:107871. [PMID: 34147013 DOI: 10.1016/j.bioelechem.2021.107871] [Citation(s) in RCA: 136] [Impact Index Per Article: 45.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/12/2021] [Accepted: 06/03/2021] [Indexed: 12/15/2022]
Abstract
Exposure of cells to high voltage electric pulses increases transiently membrane permeability through membrane electroporation. Electroporation can be reversible and is used in gene transfer and enhanced drug delivery but can also lead to cell death. Electroporation resulting in cell death (termed as irreversible electroporation) has been successfully used as a new non-thermal ablation method of soft tissue such as tumours or arrhythmogenic heart tissue. Even though the mechanisms of cell death can influence the outcome of electroporation-based treatments due to use of different electric pulse parameters and conditions, these are not elucidated yet. We review the mechanisms of cell death after electroporation reported in literature, cell injuries that may lead to cell death after electroporation and membrane repair mechanisms involved. The knowledge of membrane repair and cell death mechanisms after cell exposure to electric pulses, targets of electric field in cells need to be identified to optimize existing and develop of new electroporation-based techniques used in medicine, biotechnology, and food technology.
Collapse
Affiliation(s)
- Tina Batista Napotnik
- University of Ljubljana, Faculty of Electrical Engineering, Tržaška cesta 25, 1000 Ljubljana, Slovenia
| | - Tamara Polajžer
- University of Ljubljana, Faculty of Electrical Engineering, Tržaška cesta 25, 1000 Ljubljana, Slovenia
| | - Damijan Miklavčič
- University of Ljubljana, Faculty of Electrical Engineering, Tržaška cesta 25, 1000 Ljubljana, Slovenia.
| |
Collapse
|
9
|
Wasson EM, Alinezhadbalalami N, Brock RM, Allen IC, Verbridge SS, Davalos RV. Understanding the role of calcium-mediated cell death in high-frequency irreversible electroporation. Bioelectrochemistry 2020; 131:107369. [PMID: 31706114 PMCID: PMC10039453 DOI: 10.1016/j.bioelechem.2019.107369] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 08/29/2019] [Accepted: 08/29/2019] [Indexed: 12/13/2022]
Abstract
High-frequency irreversible electroporation (H-FIRE) is an emerging electroporation-based therapy used to ablate cancerous tissue. Treatment consists of delivering short, bipolar pulses (1-10μs) in a series of 80-100 bursts (1 burst/s, 100μs on-time). Reducing pulse duration leads to reduced treatment volumes compared to traditional IRE, therefore larger voltages must be applied to generate ablations comparable in size. We show that adjuvant calcium enhances ablation area in vitro for H-FIRE treatments of several pulse durations (1, 2, 5, 10μs). Furthermore, H-FIRE treatment using 10μs pulses delivered with 1mM CaCl2 results in cell death thresholds (771±129V/cm) comparable to IRE thresholds without calcium (698±103V/cm). Quantifying the reversible electroporation threshold revealed that CaCl2 enhances the permeabilization of cells compared to a NaCl control. Gene expression analysis determined that CaCl2 upregulates expression of eIFB5 and 60S ribosomal subunit genes while downregulating NOX1/4, leading to increased signaling in pathways that may cause necroptosis. The opposite was found for control treatment without CaCl2 suggesting cells experience an increase in pro survival signaling. Our study is the first to identify key genes and signaling pathways responsible for differences in cell response to H-FIRE treatment with and without calcium.
Collapse
Affiliation(s)
- Elisa M Wasson
- Department of Mechanical Engineering, Virginia Tech, Goodwin Hall, 635 Prices Fork Road, Blacksburg, VA 24061, USA; Institute for Critical Technology and Applied Sciences Center for Engineered Health, Virginia Tech, Kelly Hall, Blacksburg, VA 24061, USA.
| | - Nastaran Alinezhadbalalami
- Department of Biomedical Engineering and Mechanics, Virginia Tech- Wake Forest University, 325 Stanger Street, Blacksburg, VA 24061, USA; Institute for Critical Technology and Applied Sciences Center for Engineered Health, Virginia Tech, Kelly Hall, Blacksburg, VA 24061, USA.
| | - Rebecca M Brock
- Graduate Program in Translational Biology, Medicine, and Health, Virginia Tech, 1 Riverside Circle, Roanoke, VA 24016, United States of America; Department of Biomedical Sciences and Pathobiology, Virginia Tech, 205 Duck Pond Drive, Blacksburg, VA 24061, USA.
| | - Irving C Allen
- Graduate Program in Translational Biology, Medicine, and Health, Virginia Tech, 1 Riverside Circle, Roanoke, VA 24016, United States of America; Department of Biomedical Sciences and Pathobiology, Virginia Tech, 205 Duck Pond Drive, Blacksburg, VA 24061, USA; Institute for Critical Technology and Applied Sciences Center for Engineered Health, Virginia Tech, Kelly Hall, Blacksburg, VA 24061, USA.
| | - Scott S Verbridge
- Department of Biomedical Engineering and Mechanics, Virginia Tech- Wake Forest University, 325 Stanger Street, Blacksburg, VA 24061, USA; Institute for Critical Technology and Applied Sciences Center for Engineered Health, Virginia Tech, Kelly Hall, Blacksburg, VA 24061, USA.
| | - Rafael V Davalos
- Department of Mechanical Engineering, Virginia Tech, Goodwin Hall, 635 Prices Fork Road, Blacksburg, VA 24061, USA; Department of Biomedical Engineering and Mechanics, Virginia Tech- Wake Forest University, 325 Stanger Street, Blacksburg, VA 24061, USA; Institute for Critical Technology and Applied Sciences Center for Engineered Health, Virginia Tech, Kelly Hall, Blacksburg, VA 24061, USA.
| |
Collapse
|
10
|
A Comprehensive Review of Calcium Electroporation -A Novel Cancer Treatment Modality. Cancers (Basel) 2020; 12:cancers12020290. [PMID: 31991784 PMCID: PMC7073222 DOI: 10.3390/cancers12020290] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/17/2020] [Accepted: 01/19/2020] [Indexed: 12/21/2022] Open
Abstract
Calcium electroporation is a potential novel anti-cancer treatment where high calcium concentrations are introduced into cells by electroporation, a method where short, high voltage pulses induce transient permeabilisation of the plasma membrane allowing passage of molecules into the cytosol. Calcium is a tightly regulated, ubiquitous second messenger involved in many cellular processes including cell death. Electroporation increases calcium uptake leading to acute and severe ATP depletion associated with cancer cell death. This comprehensive review describes published data about calcium electroporation applied in vitro, in vivo, and clinically from the first publication in 2012. Calcium electroporation has been shown to be a safe and efficient anti-cancer treatment in clinical studies with cutaneous metastases and recurrent head and neck cancer. Normal cells have been shown to be less affected by calcium electroporation than cancer cells and this difference might be partly induced by differences in membrane repair, expression of calcium transporters, and cellular structural changes. Interestingly, both clinical data and preclinical studies have indicated a systemic immune response induced by calcium electroporation. New cancer treatments are needed, and calcium electroporation represents an inexpensive and efficient treatment with few side effects, that could potentially be used worldwide and for different tumor types.
Collapse
|
11
|
Cellular Processes Involved in Jurkat Cells Exposed to Nanosecond Pulsed Electric Field. Int J Mol Sci 2019; 20:ijms20235847. [PMID: 31766457 PMCID: PMC6929111 DOI: 10.3390/ijms20235847] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/16/2019] [Accepted: 11/19/2019] [Indexed: 12/11/2022] Open
Abstract
Recently, nanosecond pulsed electric field (nsPEF) has been considered as a new tool for tumor therapy, but its molecular mechanism of function remains to be fully elucidated. Here, we explored the cellular processes of Jurkat cells exposed to nanosecond pulsed electric field. Differentially expressed genes (DEGs) were acquired from the GEO2R, followed by analysis with a series of bioinformatics tools. Subsequently, 3D protein models of hub genes were modeled by Modeller 9.21 and Rosetta 3.9. Then, a 100 ns molecular dynamics simulation for each hub protein was performed with GROMACS 2018.2. Finally, three kinds of nsPEF voltages (0.01, 0.05, and 0.5 mV/mm) were used to simulate the molecular dynamics of hub proteins for 100 ns. A total of 1769 DEGs and eight hub genes were obtained. Molecular dynamic analysis, including root mean square deviation (RMSD), root mean square fluctuation (RMSF), and the Rg, demonstrated that the 3D structure of hub proteins was built, and the structural characteristics of hub proteins under different nsPEFs were acquired. In conclusion, we explored the effect of nsPEF on Jurkat cell signaling pathway from the perspective of molecular informatics, which will be helpful in understanding the complex effects of nsPEF on acute T-cell leukemia Jurkat cells.
Collapse
|
12
|
Excitation and electroporation by MHz bursts of nanosecond stimuli. Biochem Biophys Res Commun 2019; 518:759-764. [PMID: 31472962 DOI: 10.1016/j.bbrc.2019.08.133] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 08/23/2019] [Indexed: 12/16/2022]
Abstract
Intense nanosecond pulsed electric field (nsPEF) is a novel modality for cell activation and nanoelectroporation. Applications of nsPEF in research and therapy are hindered by a high electric field requirement, typically from 1 to over 50 kV/cm to elicit any bioeffects. We show how this requirement can be overcome by engaging temporal summation when pulses are compressed into high-rate bursts (up to several MHz). This approach was tested for excitation of ventricular cardiomyocytes and peripheral nerve fibers; for membrane electroporation of cardiomyocytes, CHO, and HEK cells; and for killing EL-4 cells. MHz compression of nsPEF bursts (100-1000 pulses) enables excitation at only 0.01-0.15 kV/cm and electroporation already at 0.4-0.6 kV/cm. Clear separation of excitation and electroporation thresholds allows for multiple excitation cycles without membrane disruption. The efficiency of nsPEF bursts increases with the duty cycle (by increasing either pulse duration or repetition rate) and with increasing the total time "on" (by increasing either pulse duration or number). For some endpoints, the efficiency of nsPEF bursts matches a single "long" pulse whose amplitude and duration equal the time-average amplitude and duration of the bursts. For other endpoints this rule is not valid, presumably because of nsPEF-specific bioeffects and/or possible modification of targets already during the burst. MHz compression of nsPEF bursts is a universal and efficient way to lower excitation thresholds and facilitate electroporation.
Collapse
|
13
|
Lai H. Exposure to Static and Extremely-Low Frequency Electromagnetic Fields and Cellular Free Radicals. Electromagn Biol Med 2019; 38:231-248. [PMID: 31450976 DOI: 10.1080/15368378.2019.1656645] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This paper summarizes studies on changes in cellular free radical activities from exposure to static and extremely-low frequency (ELF) electromagnetic fields (EMF), particularly magnetic fields. Changes in free radical activities, including levels of cellular reactive oxygen (ROS)/nitrogen (RNS) species and endogenous antioxidant enzymes and compounds that maintain physiological free radical concentrations in cells, is one of the most consistent effects of EMF exposure. These changes have been reported to affect many physiological functions such as DNA damage; immune response; inflammatory response; cell proliferation and differentiation; wound healing; neural electrical activities; and behavior. An important consideration is the effects of EMF-induced changes in free radicals on cell proliferation and differentiation. These cellular processes could affect cancer development and proper growth and development in organisms. On the other hand, they could cause selective killing of cancer cells, for instance, via the generation of the highly cytotoxic hydroxyl free radical by the Fenton Reaction. This provides a possibility of using these electromagnetic fields as a non-invasive and low side-effect cancer therapy. Static- and ELF-EMF probably play important roles in the evolution of living organisms. They are cues used in many critical survival functions, such as foraging, migration, and reproduction. Living organisms can detect and respond immediately to low environmental levels of these fields. Free radical processes are involved in some of these mechanisms. At this time, there is no credible hypothesis or mechanism that can adequately explain all the observed effects of static- and ELF-EMF on free radical processes. We are actually at the impasse that there are more questions than answers.
Collapse
Affiliation(s)
- Henry Lai
- Department of Bioengineering, University of Washington , Seattle , WA , USA
| |
Collapse
|
14
|
Nanosecond pulsed electric fields induce extracellular release of chromosomal DNA and histone citrullination in neutrophil-differentiated HL-60 cells. Sci Rep 2019; 9:8451. [PMID: 31186478 PMCID: PMC6559984 DOI: 10.1038/s41598-019-44817-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 05/22/2019] [Indexed: 12/17/2022] Open
Abstract
Nanosecond pulsed electric fields (nsPEFs) have gained attention as a novel physical stimulus for life sciences. Although cancer therapy is currently their promising application, nsPEFs have further potential owing to their ability to elicit various cellular responses. This study aimed to explore stimulatory actions of nsPEFs, and we used HL-60 cells that were differentiated into neutrophils under cultured conditions. Exposure of neutrophil-differentiated HL-60 cells to nsPEFs led to the extracellular release of chromosomal DNA, which appears to be equivalent to neutrophil extracellular traps (NETs) that serve as a host defense mechanism against pathogens. Fluorometric measurement of extracellular DNA showed that DNA extrusion was rapidly induced after nsPEF exposure and increased over time. Western blot analysis demonstrated that nsPEFs induced histone citrullination that is the hydrolytic conversion of arginine to citrulline on histones and facilitates chromatin decondensation. DNA extrusion and histone citrullination by nsPEFs were cell type-specific and Ca2+-dependent events. Taken together, these observations suggest that nsPEFs drive the mechanism for neutrophil-specific immune response without infection, highlighting a novel aspect of nsPEFs as a physical stimulus.
Collapse
|
15
|
Pankiewicz U, Góral M, Kozłowicz K, Góral D. Novel method of zinc ions supplementing with fermented and unfermented ice cream with usingPEF. Int J Food Sci Technol 2019. [DOI: 10.1111/ijfs.14103] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Urszula Pankiewicz
- Department of Analysis and Food Quality Assessment Faculty of Food Science and Biotechnology University of Life Sciences Skromna 8 20‐704 Lublin Poland
| | - Małgorzata Góral
- Department of Analysis and Food Quality Assessment Faculty of Food Science and Biotechnology University of Life Sciences Skromna 8 20‐704 Lublin Poland
| | - Katarzyna Kozłowicz
- Department of Biological Bases of Food and Feed Technologies Faculty of Production Engineering University of Life Sciences Doświadczalna 44 20‐280 Lublin Poland
| | - Dariusz Góral
- Department of Biological Bases of Food and Feed Technologies Faculty of Production Engineering University of Life Sciences Doświadczalna 44 20‐280 Lublin Poland
| |
Collapse
|
16
|
Góral M, Pankiewicz U, Sujka M, Kowalski R. Bioaccumulation of zinc ions in Lactobacillus rhamnosus B 442 cells under treatment of the culture with pulsed electric field. Eur Food Res Technol 2019. [DOI: 10.1007/s00217-018-3219-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
17
|
Wang Y, Yin S, Zhou Y, Zhou W, Chen T, Wu Q, Zhou L, Zheng S. Dual-function of Baicalin in nsPEFs-treated Hepatocytes and Hepatocellular Carcinoma cells for Different Death Pathway and Mitochondrial Response. Int J Med Sci 2019; 16:1271-1282. [PMID: 31588193 PMCID: PMC6775272 DOI: 10.7150/ijms.34876] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 08/03/2019] [Indexed: 12/24/2022] Open
Abstract
Nanosecond pulsed electric fields (nsPEFs) is emerged as a potential curative modality to ablate hepatocellular carcinoma (HCC). The application of local ablation is usually limited by insufficiency of liver function. While baicalin, a flavonoid isolated from Scutellaria baicalensis Georgi, has been proven to possess both anti-tumor and protective effects. Our study aimed to estimate different responses of hepatic cancer cells and hepatocytes to the combination of nsPEFs and baicalin. Cell viability, apoptosis and necrosis, mitochondrial transmembrane potential (MTP) and reactive oxygen species (ROS) were examined by CCK-8, FCM, JC-1 and fluorescent probe, respectively. After treatment by nsPEFs, most hepatocytes died by apoptosis, nevertheless, nearly all cancer cells were killed through necrosis. Low concentration of baicalin synergically enhanced nsPEFs-induced suppression and necrosis of HCC cells, nevertheless, the application of baicalin protected normal hepatocytes from the injury caused by nsPEFs, owing to elevating mitochondrial transmembrane potential and reducing ROS generation. Our work provided an advantageous therapy for HCC through the enhanced combination treatment of nsPEFs and baicalin, with which could improve the tumor-ablation effect and alleviate the injury of hepatic tissues simultaneously.
Collapse
Affiliation(s)
- Yubo Wang
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province 310003, China
| | - Shengyong Yin
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province 310003, China
| | - Yuan Zhou
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province 310003, China
| | - Wuhua Zhou
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province 310003, China.,Department of hepatobiliary and pancreatic surgery, Taihe Hospital, Hubei University of Medicine, Hubei, China
| | - Tianchi Chen
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province 310003, China
| | - Qinchuan Wu
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province 310003, China
| | - Lin Zhou
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province 310003, China
| | - Shusen Zheng
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province 310003, China
| |
Collapse
|
18
|
Abstract
Calcium electroporation (CaEP) is a novel anti-tumour treatment that induces cell death by internalization of large quantities of calcium. The anti-tumour effectiveness of CaEP has been demonstrated in vitro, in vivo, and in preliminary clinical trials; however, its effects on the vasculature have not been previously investigated. Using a dorsal window chamber tumour model, we observed that CaEP affected to the same degree normal and tumour blood vessels in vivo, as it disrupted the vessels and caused tumour eradication by necrosis. In all cases, the effect was more pronounced in small vessels, similar to electrochemotherapy (ECT) with bleomycin. In vitro studies in four different cell lines (the B16F1 melanoma, HUVEC endothelial, FADU squamous cell carcinoma, and CHO cell lines) confirmed that CaEP causes necrosis associated with acute and severe ATP depletion, a picture different from bleomycin with electroporation. Furthermore, CaEP considerably inhibited cell migratory capabilities of endothelial cells and their potential to form capillary-like structures. The finding that CaEP has anti-vascular effects and inhibits cell migration capabilities may contribute to the explanation of the high efficacy observed in preclinical and clinical studies.
Collapse
|
19
|
Beebe SJ, Lassiter BP, Guo S. Nanopulse Stimulation (NPS) Induces Tumor Ablation and Immunity in Orthotopic 4T1 Mouse Breast Cancer: A Review. Cancers (Basel) 2018; 10:cancers10040097. [PMID: 29601471 PMCID: PMC5923352 DOI: 10.3390/cancers10040097] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 03/13/2018] [Accepted: 03/27/2018] [Indexed: 12/13/2022] Open
Abstract
Nanopulse Stimulation (NPS) eliminates mouse and rat tumor types in several different animal models. NPS induces protective, vaccine-like effects after ablation of orthotopic rat N1-S1 hepatocellular carcinoma. Here we review some general concepts of NPS in the context of studies with mouse metastatic 4T1 mammary cancer showing that the postablation, vaccine-like effect is initiated by dynamic, multilayered immune mechanisms. NPS eliminates primary 4T1 tumors by inducing immunogenic, caspase-independent programmed cell death (PCD). With lower electric fields, like those peripheral to the primary treatment zone, NPS can activate dendritic cells (DCs). The activation of DCs by dead/dying cells leads to increases in memory effector and central memory T-lymphocytes in the blood and spleen. NPS also eliminates immunosuppressive cells in the tumor microenvironment and blood. Finally, NPS treatment of 4T1 breast cancer exhibits an abscopal effect and largely prevents spontaneous metastases to distant organs. NPS with fast rise–fall times and pulse durations near the plasma membrane charging time constant, which exhibits transient, high-frequency components (1/time = Hz), induce responses from mitochondria, endoplasmic reticulum, and nucleus. Such effects may be responsible for release of danger-associated molecular patterns, including ATP, calreticulin, and high mobility group box 1 (HMBG1) from 4T1-Luc cells to induce immunogenic cell death (ICD). This likely leads to immunity and the vaccine-like response. In this way, NPS acts as a unique onco-immunotherapy providing distinct therapeutic advantages showing possible clinical utility for breast cancers as well as for other malignancies.
Collapse
Affiliation(s)
- Stephen J Beebe
- Frank Reidy Research Center for Bioelectrics, 4211 Monarch Ways, Suite 300, Norfolk, VA 23508, USA.
| | - Brittany P Lassiter
- Frank Reidy Research Center for Bioelectrics, 4211 Monarch Ways, Suite 300, Norfolk, VA 23508, USA.
| | - Siqi Guo
- Frank Reidy Research Center for Bioelectrics, 4211 Monarch Ways, Suite 300, Norfolk, VA 23508, USA.
| |
Collapse
|
20
|
Wang B, Zhang J, Zhang Y, Mao Z, Lu N, Liu QH. The penetration of a charged peptide across a membrane under an external electric field: a coarse-grained molecular dynamics simulation. RSC Adv 2018; 8:41517-41525. [PMID: 35559300 PMCID: PMC9091862 DOI: 10.1039/c8ra07654e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 11/28/2018] [Indexed: 01/05/2023] Open
Abstract
The processes of single polyarginine (R8) peptide penetration through planar and vesicle membranes under an external electric field are simulated via a coarse-grained molecular dynamics (CGMD) simulation.
Collapse
Affiliation(s)
- Bin Wang
- Institute of Electromagnetics and Acoustics
- Department of Electronic Science
- Xiamen University
- Xiamen
- P. R. China
| | - Jianhua Zhang
- Institute of Electromagnetics and Acoustics
- Department of Electronic Science
- Xiamen University
- Xiamen
- P. R. China
| | - Youyu Zhang
- Institute of Electromagnetics and Acoustics
- Department of Electronic Science
- Xiamen University
- Xiamen
- P. R. China
| | - Zheng Mao
- Institute of Electromagnetics and Acoustics
- Department of Electronic Science
- Xiamen University
- Xiamen
- P. R. China
| | - Nan Lu
- Institute of Electromagnetics and Acoustics
- Department of Electronic Science
- Xiamen University
- Xiamen
- P. R. China
| | - Qing Huo Liu
- Department of Electrical and Computer Engineering
- Duke University
- Durham
- USA
| |
Collapse
|
21
|
Doyon P, Johansson O. Electromagnetic fields may act via calcineurin inhibition to suppress immunity, thereby increasing risk for opportunistic infection: Conceivable mechanisms of action. Med Hypotheses 2017; 106:71-87. [DOI: 10.1016/j.mehy.2017.06.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 06/25/2017] [Accepted: 06/30/2017] [Indexed: 11/26/2022]
|
22
|
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.
Collapse
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
| |
Collapse
|
23
|
Morotomi-Yano K, Yano KI. Calcium-dependent activation of transglutaminase 2 by nanosecond pulsed electric fields. FEBS Open Bio 2017; 7:934-943. [PMID: 28680807 PMCID: PMC5494297 DOI: 10.1002/2211-5463.12227] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 04/06/2017] [Indexed: 12/17/2022] Open
Abstract
Exposure of cultured human cells to nanosecond pulsed electric fields (nsPEFs) elicits various cellular events, including Ca2+ influx and cell death. Recently, nsPEFs have been regarded as a novel physical treatment useful for biology and medicine, but the underlying mechanism of action remains to be fully elucidated. In this study, we investigated the effect of nsPEFs on transglutaminases (TGs), enzymes that catalyze covalent protein modifications such as protein-protein crosslinking. Cellular TG activity was monitored by conjugation of cellular proteins with biotin-cadaverine, a cell-permeable pseudosubstrate for TGs. We applied nsPEFs to HeLa S3 cells and found that overall catalytic activity of cellular TGs was greatly increased in a Ca2+-dependent manner. The Ca2+ ionophore ionomycin significantly augmented nsPEF-induced TG activation, further supporting the importance of Ca2+. Among human TG family members, TG2 is known to be the most ubiquitously expressed, and its catalytic activity requires elevated intracellular Ca2+. Given the requirement of Ca2+ for TG activation by nsPEFs, we performed depletion of TG2 by RNA interference (RNAi). We observed that TG2 RNAi suppressed the nsPEF-induced TG activation and partially alleviated the cytotoxic effects of nsPEFs. These findings demonstrate that TG2 activation is a Ca2+-dependent event in nsPEF-exposed cells and exerts negative effects on cell physiology.
Collapse
Affiliation(s)
- Keiko Morotomi-Yano
- Department of Bioelectrics Institute of Pulsed Power Science Kumamoto University Japan
| | - Ken-Ichi Yano
- Department of Bioelectrics Institute of Pulsed Power Science Kumamoto University Japan
| |
Collapse
|
24
|
Induction of apoptosis of liver cancer cells by nanosecond pulsed electric fields (nsPEFs). Med Oncol 2017; 34:24. [PMID: 28058631 DOI: 10.1007/s12032-016-0882-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 12/29/2016] [Indexed: 12/18/2022]
Abstract
The application of nanosecond pulsed electric fields (nsPEFs) is a novel method to induce the death of cancer cells. NsPEFs could directly function on the cell membrane and activate the apoptosis pathways, then induce apoptosis in various cell lines. However, the nsPEFs-inducing-apoptosis action sites and the exact pathways are not clear now. In this study, nsPEFs were applied to the human liver cancer cells HepG2 with different parameters. By apoptosis assay, morphological observation, detecting the mitochondrial membrane potential (ΔΨ m), intracellular calcium ion concentration ([Ca2+]i) and the expressions of key apoptosis factors, we demonstrated that nsPEFs could induce the morphology of cell apoptosis, the change in ΔΨ m, [Ca2+]i and the upregulation of some key apoptosis factors, which revealed the responses of liver cancer cells and indicated that cells may undergo apoptosis through the mitochondria-dependent pathway after nsPEFs were applied.
Collapse
|
25
|
Nanosecond Pulsed Electric Fields Enhance the Anti-tumour Effects of the mTOR Inhibitor Everolimus against Melanoma. Sci Rep 2017; 7:39597. [PMID: 28054548 PMCID: PMC5215571 DOI: 10.1038/srep39597] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 11/25/2016] [Indexed: 12/16/2022] Open
Abstract
The PI3K/mTOR/AKT pathway is activated in most melanomas, but mTOR inhibitors used singly have limited activity against advanced melanomas. The application of nanosecond pulsed electric fields (nsPEFs) is a promising cancer therapy approach. In this study, we evaluated the synergistic anti-tumour efficacy of the mTOR inhibitor everolimus in conjunction with nsPEFs against melanoma. The combined treatment of nsPEFs and everolimus gradually decreased cell growth concurrent with nsPEF intensity. nsPEFs alone or combined with everolimus could promote melanoma cell apoptosis, accompanied with a loss in cellular mitochondrial membrane potential and an increase in Ca2+ levels. In vivo experiments showed that a combination of the mTOR inhibitor everolimus and nsPEFs improved the inhibitory effect, and all skin lesions caused by nsPEFs healed in 1 week without any observed adverse effect. Combination treatment induced caspase-dependent apoptosis through the upregulation of the pro-apoptotic factor Bax and downregulation of the anti-apoptotic factor Bcl-2. Everolimus and nsPEFs synergistically inhibited angiogenesis by decreasing the expression of vascular endothelial growth factor (VEGF), VEGF receptor (VEGFR), and CD34. Our findings indicate that nsPEFs in combination with an mTOR inhibitor can be used as a potential treatment approach for advanced melanoma.
Collapse
|
26
|
Gianulis EC, Labib C, Saulis G, Novickij V, Pakhomova ON, Pakhomov AG. Selective susceptibility to nanosecond pulsed electric field (nsPEF) across different human cell types. Cell Mol Life Sci 2016; 74:1741-1754. [PMID: 27986976 DOI: 10.1007/s00018-016-2434-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 10/27/2016] [Accepted: 12/05/2016] [Indexed: 12/18/2022]
Abstract
Tumor ablation by nanosecond pulsed electric fields (nsPEF) is an emerging therapeutic modality. We compared nsPEF cytotoxicity for human cell lines of cancerous (IMR-32, Hep G2, HT-1080, and HPAF-II) and non-cancerous origin (BJ and MRC-5) under strictly controlled and identical conditions. Adherent cells were uniformly treated by 300-ns PEF (0-2000 pulses, 1.8 kV/cm, 50 Hz) on indium tin oxide-covered glass coverslips, using the same media and serum. Cell survival plotted against the number of pulses displayed three distinct regions (initial resistivity, logarithmic survival decline, and residual resistivity) for all tested cell types, but with differences in LD50 spanning as much as nearly 80-fold. The non-cancerous cells were less sensitive than IMR-32 neuroblastoma cells but more vulnerable than the other cancers tested. The cytotoxic efficiency showed no apparent correlation with cell or nuclear size, cell morphology, metabolism level, or the extent of membrane disruption by nsPEF. Increasing pulse duration to 9 µs (0.75 kV/cm, 5 Hz) produced a different selectivity pattern, suggesting that manipulation of PEF parameters can, at least for certain cancers, overcome their resistance to nsPEF ablation. Identifying mechanisms and cell markers of differential nsPEF susceptibility will critically contribute to the proper choice and outcome of nsPEF ablation therapies.
Collapse
Affiliation(s)
- Elena C Gianulis
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, 4211 Monarch Way, Suite 300, Norfolk, VA, 23508, USA.
| | - Chantelle Labib
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, 4211 Monarch Way, Suite 300, Norfolk, VA, 23508, USA
| | - Gintautas Saulis
- Department of Biology, Faculty of Natural Sciences, Vytautas Magnus University, Kaunas, Lithuania
| | - Vitalij Novickij
- Magnetic Field Institute, Vilnius Gediminas Technical University, Vilnius, Lithuania
| | - Olga N Pakhomova
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, 4211 Monarch Way, Suite 300, Norfolk, VA, 23508, USA
| | - Andrei G Pakhomov
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, 4211 Monarch Way, Suite 300, Norfolk, VA, 23508, USA
| |
Collapse
|
27
|
Orbán C, Pérez-García E, Bajnok A, McBean G, Toldi G, Blanco-Fernandez A. Real time kinetic flow cytometry measurements of cellular parameter changes evoked by nanosecond pulsed electric field. Cytometry A 2016; 89:472-9. [PMID: 26990601 DOI: 10.1002/cyto.a.22838] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 01/06/2016] [Accepted: 02/22/2016] [Indexed: 11/05/2022]
Abstract
Nanosecond pulsed electric field (nsPEF) is a novel method to increase cell proliferation rate. The phenomenon is based on the microporation of cellular organelles and membranes. However, we have limited information on the effects of nsPEF on cell physiology. Several studies have attempted to describe the effects of this process, however no real time measurements have been conducted to date. In this study we designed a model system which allows the measurement of cellular processes before, during and after nsPEF treatment in real time. The system employs a Vabrema Mitoplicator(TM) nsPEF field generating instrument connected to a BD Accuri C6 cytometer with a silicon tube led through a peristaltic pump. This model system was applied to observe the effects of nsPEF in mammalian C6 glioblastoma (C6 glioma) and HEK-293 cell lines. Viability (using DRAQ7 dye), intracellular calcium levels (using Fluo-4 dye) and scatter characteristics were measured in a kinetic manner. Data were analyzed using the FACSKin software. The viability and morphology of the investigated cells was not altered upon nsPEF treatment. The response of HEK-293 cells to ionomycin as positive control was significantly lower in the nsPEF treated samples compared to non-treated cells. This difference was not observed in C6 cells. FSC and SSC values were not altered significantly by the nsPEF treatment. Our results indicate that this model system is capable of reliably investigating the effects of nsPEF on cellular processes in real time. © 2016 International Society for Advancement of Cytometry.
Collapse
Affiliation(s)
- Csaba Orbán
- First Department of Obstetrics and Gynecology, Semmelweis University, Baross street 27, Budapest, H-1085, Hungary.,Department of Dietetics and Nutrition Sciences, Faculty of Health Sciences, Semmelweis University, Vas street 17, Budapest, H-1088, Hungary
| | - Esther Pérez-García
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - Anna Bajnok
- First Department of Obstetrics and Gynecology, Semmelweis University, Baross street 27, Budapest, H-1085, Hungary
| | - Gethin McBean
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - Gergely Toldi
- First Department of Obstetrics and Gynecology, Semmelweis University, Baross street 27, Budapest, H-1085, Hungary
| | - Alfonso Blanco-Fernandez
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| |
Collapse
|
28
|
Muratori C, Pakhomov AG, Xiao S, Pakhomova ON. Electrosensitization assists cell ablation by nanosecond pulsed electric field in 3D cultures. Sci Rep 2016; 6:23225. [PMID: 26987779 PMCID: PMC4796786 DOI: 10.1038/srep23225] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 03/02/2016] [Indexed: 01/04/2023] Open
Abstract
Previous studies reported a delayed increase of sensitivity to electroporation (termed “electrosensitization”) in mammalian cells that had been subjected to electroporation. Electrosensitization facilitated membrane permeabilization and reduced survival in cell suspensions when the electric pulse treatments were split in fractions. The present study was aimed to visualize the effect of sensitization and establish its utility for cell ablation. We used KLN 205 squamous carcinoma cells embedded in an agarose gel and cell spheroids in Matrigel. A local ablation was created by a train of 200 to 600 of 300-ns pulses (50 Hz, 300–600 V) delivered by a two-needle probe with 1-mm inter-electrode distance. In order to facilitate ablation by engaging electrosensitization, the train was split in two identical fractions applied with a 2- to 480-s interval. At 400–600 V (2.9–4.3 kV/cm), the split-dose treatments increased the ablation volume and cell death up to 2–3-fold compared to single-train treatments. Under the conditions tested, the maximum enhancement of ablation was achieved when two fractions were separated by 100 s. The results suggest that engaging electrosensitization may assist in vivo cancer ablation by reducing the voltage or number of pulses required, or by enabling larger inter-electrode distances without losing the ablation efficiency.
Collapse
Affiliation(s)
- Claudia Muratori
- 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
| | - 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
| |
Collapse
|
29
|
Lai HC, Chan HW, Singh NP. Effects of radiation from a radiofrequency identification (RFID) microchip on human cancer cells. Int J Radiat Biol 2016; 92:156-61. [PMID: 26872622 DOI: 10.3109/09553002.2016.1135264] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
PURPOSE Radiofrequency identification (RFID) microchips are used to remotely identify objects, e.g. an animal in which a chip is implanted. A passive RFID microchip absorbs energy from an external source and emits a radiofrequency identification signal which is then decoded by a detector. In the present study, we investigated the effect of the radiofrequency energy emitted by a RFID microchip on human cancer cells. MATERIALS AND METHODS Molt-4 leukemia, BT474 breast cancer, and HepG2 hepatic cancer cells were exposed in vitro to RFID microchip-emitted radiofrequency field for 1 h. Cells were counted before and after exposure. Effects of pretreatment with the spin-trap compound N-tert-butyl-alpha-phenylnitrone or the iron-chelator deferoxamine were also investigated. Results We found that the energy effectively killed/retarded the growth of the three different types of cancer cells, and the effect was blocked by the spin-trap compound or the iron-chelator, whereas an inactive microchip and energy from the external source had no significant effect on the cells. Conclusions Data of the present study suggest that radiofrequency field from the microchip affects cancer cells via the Fenton Reaction. Implantation of RFID microchips in tumors may provide a new method for cancer treatment.
Collapse
Affiliation(s)
- Henry C Lai
- a Department of Bioengineering , University of Washington , Seattle , WA , USA
| | - Ho Wing Chan
- a Department of Bioengineering , University of Washington , Seattle , WA , USA
| | - Narendra P Singh
- a Department of Bioengineering , University of Washington , Seattle , WA , USA
| |
Collapse
|
30
|
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.
Collapse
|
31
|
Electroporation of mammalian cells by nanosecond electric field oscillations and its inhibition by the electric field reversal. Sci Rep 2015; 5:13818. [PMID: 26348662 PMCID: PMC4562301 DOI: 10.1038/srep13818] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 08/07/2015] [Indexed: 12/18/2022] Open
Abstract
The present study compared electroporation efficiency of bipolar and unipolar nanosecond electric field oscillations (NEFO). Bipolar NEFO was a damped sine wave with 140 ns first phase duration at 50% height; the peak amplitude of phases 2–4 decreased to 35%, 12%, and 7% of the first phase. This waveform was rectified to produce unipolar NEFO by cutting off phases 2 and 4. Membrane permeabilization was quantified in CHO and GH3 cells by uptake of a membrane integrity marker dye YO-PRO-1 (YP) and by the membrane conductance increase measured by patch clamp. For treatments with 1–20 unipolar NEFO, at 9.6–24 kV/cm, 10 Hz, the rate and amount of YP uptake were consistently 2-3-fold higher than after bipolar NEFO treatments, despite delivering less energy. However, the threshold amplitude was about 7 kV/cm for both NEFO waveforms. A single 14.4 kV/cm unipolar NEFO caused a 1.5–2 times greater increase in membrane conductance (p < 0.05) than bipolar NEFO, along with a longer and less frequent recovery. The lower efficiency of bipolar NEFO was preserved in Ca2+-free conditions and thus cannot be explained by the reversal of electrophoretic flows of Ca2+. Instead, the data indicate that the electric field polarity reversals reduced the pore yield.
Collapse
|
32
|
Beebe J S. Mechanisms of Nanosecond Pulsed Electric Field (NsPEF)-Induced Cell Death in Cells and Tumors. ACTA ACUST UNITED AC 2015. [DOI: 10.15406/jnmr.2015.02.00016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
33
|
Beebe SJ. Hepatocellular carcinoma ablation and possible immunity in the age of nanosecond pulsed electric fields. J Hepatocell Carcinoma 2015; 2:49-55. [PMID: 27508194 PMCID: PMC4918284 DOI: 10.2147/jhc.s83941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Affiliation(s)
- Stephen J Beebe
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA
| |
Collapse
|
34
|
Chen R, Sain NM, Harlow KT, Chen YJ, Shires PK, Heller R, Beebe SJ. A protective effect after clearance of orthotopic rat hepatocellular carcinoma by nanosecond pulsed electric fields. Eur J Cancer 2014; 50:2705-13. [PMID: 25081978 DOI: 10.1016/j.ejca.2014.07.006] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 07/01/2014] [Accepted: 07/07/2014] [Indexed: 12/21/2022]
Abstract
Strategies for treating liver cancer using radiation, chemotherapy combinations and tyrosine kinase inhibitors targeting specific mutations have provided longer survival times, yet multiple treatments are often needed and recurrences with new malignant phenotypes are not uncommon. New and innovative treatments are undoubtedly needed to successfully treat liver cancer. Over the last decade, nanosecond pulsed electric fields (nsPEFs) have shown promise in pre-clinical studies; however, these have been limited to treatment of skin cancers or xenographs in mice. In the present report, an orthotopic hepatocellular carcinoma (HCC) model is established in rats using N1-S1 HCC cells. Data demonstrate a response rate of 80-90% when 1000 pulses are delivered with 100ns durations, electric field strengths of 50kV/cm and repetition rates of 1Hz. N1-S1 tumours treated with nsPEFs expressed significant number of cells with active caspase-3 and caspase-9, but not caspase-8, indicating an intrinsic apoptosis mechanism(s) as well as caspase-independent mechanisms. Most remarkably, rats with successfully ablated tumours failed to re-grow tumours when challenged with a second injection of N1-S1 cells when implanted in the same or different liver lobe that harboured the original tumour. Given this protective effect, infiltration of immune cells and the presence of granzyme B expressing cells within days of treatment suggest the possibility of an anti-tumour adaptive immune response. In conclusion, NsPEFs not only eliminate N1-S1 HCC tumours, but also may induce an immuno-protective effect that defends animals against recurrences of the same cancer.
Collapse
Affiliation(s)
- Ru Chen
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, 4211 Monarch Way, IRP2, Suite 300, Norfolk, VA 23508, USA; Ethicon, 4545 Creek Road, Cincinnati, OH 45242, USA
| | - Nova M Sain
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, 4211 Monarch Way, IRP2, Suite 300, Norfolk, VA 23508, USA
| | - K Tyler Harlow
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, 4211 Monarch Way, IRP2, Suite 300, Norfolk, VA 23508, USA
| | - Yeong-Jer Chen
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, 4211 Monarch Way, IRP2, Suite 300, Norfolk, VA 23508, USA
| | | | - Richard Heller
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, 4211 Monarch Way, IRP2, Suite 300, Norfolk, VA 23508, USA
| | - Stephen J Beebe
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, 4211 Monarch Way, IRP2, Suite 300, Norfolk, VA 23508, USA.
| |
Collapse
|