1
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Jo A, Joh HM, Bae JH, Kim SJ, Chung JW, Chung TH. Plasma-Activated Media Produced by a Microwave-Excited Atmospheric Pressure Plasma Jet Is Effective against Cisplatin-Resistant Human Bladder Cancer Cells In Vitro. Int J Mol Sci 2024; 25:1249. [PMID: 38279247 PMCID: PMC10816804 DOI: 10.3390/ijms25021249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 01/09/2024] [Accepted: 01/17/2024] [Indexed: 01/28/2024] Open
Abstract
Media exposed to atmospheric pressure plasma (APP) produce reactive oxygen and nitrogen species (RONS), with hydrogen peroxide (H2O2), nitrite (NO2-), and nitrate (NO3-) being among the most detected species due to their relatively long lifetime. In this study, a standardized microwave-excited (ME) APP jet (APPJ) source was employed to produce gaseous RONS to treat liquid samples. The source was a commercially available plasma jet, which generated argon plasma utilizing a coaxial transmission line resonator at the operating frequency of 2.45 GHz. An ultraviolet-visible spectrophotometer was used to measure the concentrations of H2O2 and NO3- in plasma-activated media (PAM). Three different types of media (deionized water, Hank's balanced salt solution, and cell culture solution Dulbecco's modified eagles medium [DMEM]) were utilized as liquid samples. Among these media, the plasma-treated DMEM was observed to have the highest levels of H2O2 and NO3-. Subsequently, the feasibility of using argon ME-APPJ-activated DMEM (PAM) as an adjuvant to enhance the therapeutic effects of cisplatin on human bladder cancer cells (T-24) was investigated. Various cancer cell lines, including T-24 cells, treated with PAM were observed in vitro for changes in cell viability using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. A viability reduction was detected in the various cancer cells after incubation in PAM. Furthermore, the study's results revealed that PAM was effective against cisplatin-resistant T-24 cells in vitro. In addition, a possible connection between HER expression and cell viability was sketched.
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Affiliation(s)
- Ara Jo
- Department of Biological Sciences, Dong-A University, Busan 49315, Republic of Korea;
| | - Hea-Min Joh
- Department of Physics, Dong-A University, Busan 49315, Republic of Korea (J.-H.B.); (S.-J.K.)
| | - Jin-Hee Bae
- Department of Physics, Dong-A University, Busan 49315, Republic of Korea (J.-H.B.); (S.-J.K.)
| | - Sun-Ja Kim
- Department of Physics, Dong-A University, Busan 49315, Republic of Korea (J.-H.B.); (S.-J.K.)
| | - Jin-Woong Chung
- Department of Biological Sciences, Dong-A University, Busan 49315, Republic of Korea;
| | - Tae-Hun Chung
- Department of Physics, Dong-A University, Busan 49315, Republic of Korea (J.-H.B.); (S.-J.K.)
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2
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Arabshomali A, Bazzazzadehgan S, Mahdi F, Shariat-Madar Z. Potential Benefits of Antioxidant Phytochemicals in Type 2 Diabetes. Molecules 2023; 28:7209. [PMID: 37894687 PMCID: PMC10609456 DOI: 10.3390/molecules28207209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/18/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023] Open
Abstract
The clinical relationship between diabetes and inflammation is well established. Evidence clearly indicates that disrupting oxidant-antioxidant equilibrium and elevated lipid peroxidation could be a potential mechanism for chronic kidney disease associated with type 2 diabetes mellitus (T2DM). Under diabetic conditions, hyperglycemia, especially inflammation, and increased reactive oxygen species generation are bidirectionally associated. Inflammation, oxidative stress, and tissue damage are believed to play a role in the development of diabetes. Although the exact mechanism underlying oxidative stress and its impact on diabetes progression remains uncertain, the hyperglycemia-inflammation-oxidative stress interaction clearly plays a significant role in the onset and progression of vascular disease, kidney disease, hepatic injury, and pancreas damage and, therefore, holds promise as a therapeutic target. Evidence strongly indicates that the use of multiple antidiabetic medications fails to achieve the normal range for glycated hemoglobin targets, signifying treatment-resistant diabetes. Antioxidants with polyphenols are considered useful as adjuvant therapy for their potential anti-inflammatory effect and antioxidant activity. We aimed to analyze the current major points reported in preclinical, in vivo, and clinical studies of antioxidants in the prevention or treatment of inflammation in T2DM. Then, we will share our speculative vision for future diabetes clinical trials.
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Affiliation(s)
- Arman Arabshomali
- Department of Pharmacy Administration, School of Pharmacy, University of Mississippi, University, MS 38677, USA; (A.A.); (S.B.)
| | - Shadi Bazzazzadehgan
- Department of Pharmacy Administration, School of Pharmacy, University of Mississippi, University, MS 38677, USA; (A.A.); (S.B.)
| | - Fakhri Mahdi
- Department of BioMolecular Sciences, Division of Pharmacology, School of Pharmacy, University of Mississippi, University, MS 38677, USA;
| | - Zia Shariat-Madar
- Department of BioMolecular Sciences, Division of Pharmacology, School of Pharmacy, University of Mississippi, University, MS 38677, USA;
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3
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Ghasemitarei M, Ghorbi T, Yusupov M, Zhang Y, Zhao T, Shali P, Bogaerts A. Effects of Nitro-Oxidative Stress on Biomolecules: Part 1-Non-Reactive Molecular Dynamics Simulations. Biomolecules 2023; 13:1371. [PMID: 37759771 PMCID: PMC10527456 DOI: 10.3390/biom13091371] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/04/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
Plasma medicine, or the biomedical application of cold atmospheric plasma (CAP), is an expanding field within plasma research. CAP has demonstrated remarkable versatility in diverse biological applications, including cancer treatment, wound healing, microorganism inactivation, and skin disease therapy. However, the precise mechanisms underlying the effects of CAP remain incompletely understood. The therapeutic effects of CAP are largely attributed to the generation of reactive oxygen and nitrogen species (RONS), which play a crucial role in the biological responses induced by CAP. Specifically, RONS produced during CAP treatment have the ability to chemically modify cell membranes and membrane proteins, causing nitro-oxidative stress, thereby leading to changes in membrane permeability and disruption of cellular processes. To gain atomic-level insights into these interactions, non-reactive molecular dynamics (MD) simulations have emerged as a valuable tool. These simulations facilitate the examination of larger-scale system dynamics, including protein-protein and protein-membrane interactions. In this comprehensive review, we focus on the applications of non-reactive MD simulations in studying the effects of CAP on cellular components and interactions at the atomic level, providing a detailed overview of the potential of CAP in medicine. We also review the results of other MD studies that are not related to plasma medicine but explore the effects of nitro-oxidative stress on cellular components and are therefore important for a broader understanding of the underlying processes.
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Affiliation(s)
- Maryam Ghasemitarei
- Department of Physics, Sharif University of Technology, Tehran 14588-89694, Iran
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, 2610 Antwerp, Belgium
| | - Tayebeh Ghorbi
- Department of Physics, Sharif University of Technology, Tehran 14588-89694, Iran
| | - Maksudbek Yusupov
- School of Engineering, New Uzbekistan University, Tashkent 100007, Uzbekistan
- School of Engineering, Central Asian University, Tashkent 111221, Uzbekistan
- Laboratory of Thermal Physics of Multiphase Systems, Arifov Institute of Ion-Plasma and Laser Technologies, Academy of Sciences of Uzbekistan, Tashkent 100125, Uzbekistan
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, 2610 Antwerp, Belgium
| | - Yuantao Zhang
- School of Electrical Engineering, Shandong University, Jinan 250061, China
| | - Tong Zhao
- School of Electrical Engineering, Shandong University, Jinan 250061, China
| | - Parisa Shali
- Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Agriculture, Ghent University, 9000 Ghent, Belgium
| | - Annemie Bogaerts
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, 2610 Antwerp, Belgium
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4
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Kalinina EV, Novichkova MD. S-Glutathionylation and S-Nitrosylation as Modulators of Redox-Dependent Processes in Cancer Cell. Biochemistry (Mosc) 2023; 88:924-943. [PMID: 37751864 DOI: 10.1134/s0006297923070064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/10/2023] [Accepted: 03/11/2023] [Indexed: 09/28/2023]
Abstract
Development of oxidative/nitrosative stress associated with the activation of oncogenic pathways results from the increase in the generation of reactive oxygen and nitrogen species (ROS/RNS) in tumor cells, where they can have a dual effect. At high concentrations, ROS/RNS cause cell death and limit tumor growth at certain phases of its development, while their low amounts promote oxidative/nitrosative modifications of key redox-dependent residues in regulatory proteins. The reversibility of such modifications as S-glutathionylation and S-nitrosylation that proceed through the electrophilic attack of ROS/RNS on nucleophilic Cys residues ensures the redox-dependent switch in the activity of signaling proteins, as well as the ability of these compounds to control cell proliferation and programmed cell death. The content of S-glutathionylated and S-nitrosylated proteins is controlled by the balance between S-glutathionylation/deglutathionylation and S-nitrosylation/denitrosylation, respectively, and depends on the cellular redox status. The extent of S-glutathionylation and S-nitrosylation of protein targets and their ratio largely determine the status and direction of signaling pathways in cancer cells. The review discusses the features of S-glutathionylation and S-nitrosylation reactions and systems that control them in cancer cells, as well as their relationship with redox-dependent processes and tumor growth.
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Abduvokhidov D, Yusupov M, Shahzad A, Attri P, Shiratani M, Oliveira MC, Razzokov J. Unraveling the Transport Properties of RONS across Nitro-Oxidized Membranes. Biomolecules 2023; 13:1043. [PMID: 37509079 PMCID: PMC10377474 DOI: 10.3390/biom13071043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/13/2023] [Accepted: 06/25/2023] [Indexed: 07/30/2023] Open
Abstract
The potential of cold atmospheric plasma (CAP) in biomedical applications has received significant interest, due to its ability to generate reactive oxygen and nitrogen species (RONS). Upon exposure to living cells, CAP triggers alterations in various cellular components, such as the cell membrane. However, the permeation of RONS across nitrated and oxidized membranes remains understudied. To address this gap, we conducted molecular dynamics simulations, to investigate the permeation capabilities of RONS across modified cell membranes. This computational study investigated the translocation processes of less hydrophilic and hydrophilic RONS across the phospholipid bilayer (PLB), with various degrees of oxidation and nitration, and elucidated the impact of RONS on PLB permeability. The simulation results showed that less hydrophilic species, i.e., NO, NO2, N2O4, and O3, have a higher penetration ability through nitro-oxidized PLB compared to hydrophilic RONS, i.e., HNO3, s-cis-HONO, s-trans-HONO, H2O2, HO2, and OH. In particular, nitro-oxidation of PLB, induced by, e.g., cold atmospheric plasma, has minimal impact on the penetration of free energy barriers of less hydrophilic species, while it lowers these barriers for hydrophilic RONS, thereby enhancing their translocation across nitro-oxidized PLB. This research contributes to a better understanding of the translocation abilities of RONS in the field of plasma biomedical applications and highlights the need for further analysis of their role in intracellular signaling pathways.
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Affiliation(s)
- Davronjon Abduvokhidov
- Institute of Fundamental and Applied Research, National Research University TIIAME, Kori Niyoziy 39, Tashkent 100000, Uzbekistan
- Department of Information Technologies, Tashkent International University of Education, Imom Bukhoriy 6, Tashkent 100207, Uzbekistan
- Institute of Material Sciences, Academy of Sciences, Chingiz Aytmatov 2b, Tashkent 100084, Uzbekistan
| | - Maksudbek Yusupov
- R&D Center, New Uzbekistan University, Mustaqillik Avenue 54, Tashkent 100007, Uzbekistan
- Department of Power Supply and Renewable Energy Sources, National Research University TIIAME, Kori Niyoziy 39, Tashkent 100000, Uzbekistan
- Laboratory of Thermal Physics of Multiphase Systems, Arifov Institute of Ion-Plasma and Laser Technologies, Academy of Sciences of Uzbekistan, Tashkent 100125, Uzbekistan
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Aamir Shahzad
- Modeling and Simulation Laboratory, Department of Physics, Government College University Faisalabad (GCUF), Allama Iqbal Road, Faisalabad 38040, Pakistan
| | - Pankaj Attri
- Center of Plasma Nano-Interface Engineering, Kyushu University, Fukuoka 819-0395, Japan
- Faculty of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Masaharu Shiratani
- Center of Plasma Nano-Interface Engineering, Kyushu University, Fukuoka 819-0395, Japan
- Faculty of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Maria C Oliveira
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Jamoliddin Razzokov
- Institute of Fundamental and Applied Research, National Research University TIIAME, Kori Niyoziy 39, Tashkent 100000, Uzbekistan
- School of Engineering, Akfa University, Milliy Bog Street 264, Tashkent 111221, Uzbekistan
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6
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Gaur N, Patenall BL, Ghimire B, Thet NT, Gardiner JE, Le Doare KE, Ramage G, Short B, Heylen RA, Williams C, Short RD, Jenkins TA. Cold Atmospheric Plasma-Activated Composite Hydrogel for an Enhanced and On-Demand Delivery of Antimicrobials. ACS Appl Mater Interfaces 2023; 15:19989-19996. [PMID: 37040527 PMCID: PMC10141252 DOI: 10.1021/acsami.3c01208] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We present the concept of a versatile drug-loaded composite hydrogel that can be activated using an argon-based cold atmospheric plasma (CAP) jet to deliver both a drug and CAP-generated molecules, concomitantly, in a tissue target. To demonstrate this concept, we utilized the antibiotic gentamicin that is encapsulated in sodium polyacrylate (PAA) particles, which are dispersed within a poly(vinyl alcohol) (PVA) hydrogel matrix. The final product is a gentamicin-PAA-PVA composite hydrogel suitable for an on-demand triggered release using CAP. We show that by activating using CAP, we can effectively release gentamicin from the hydrogel and also eradicate the bacteria effectively, both in the planktonic state and within a biofilm. Besides gentamicin, we also successfully demonstrate the applicability of the CAP-activated composite hydrogel loaded with other antimicrobial agents such as cetrimide and silver. This concept of a composite hydrogel is potentially adaptable to a range of therapeutics (such as antimicrobials, anticancer agents, and nanoparticles) and activatable using any dielectric barrier discharge CAP device.
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Affiliation(s)
- Nishtha Gaur
- Department
of Chemistry, Lancaster University, Lancaster LA1 4YB, U.K.
| | | | - Bhagirath Ghimire
- Department
of Chemistry, Lancaster University, Lancaster LA1 4YB, U.K.
| | - Naing T. Thet
- Department
of Chemistry, University of Bath, Bath BA2 7AY, U.K.
| | | | | | - Gordon Ramage
- Glasgow
Dental School, School of Medicine, University
of Glasgow, Glasgow G12 8TA, U.K.
| | - Bryn Short
- Glasgow
Dental School, School of Medicine, University
of Glasgow, Glasgow G12 8TA, U.K.
| | | | - Craig Williams
- Microbiology
Department, Lancaster Royal Infirmary, University
of Lancaster, Lancaster LA1 4YW, U.K.
| | - Robert D. Short
- Department
of Chemistry, Lancaster University, Lancaster LA1 4YB, U.K.
- Department
of Chemistry, The University of Sheffield, Sheffield S3 7HF, U.K.
| | - Toby A. Jenkins
- Department
of Chemistry, University of Bath, Bath BA2 7AY, U.K.
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7
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Xu L, Luo Y, Du Q, Zhang W, Hu L, Fang N, Wang J, Liu J, Zhou J, Zhong Y, Liu Y, Ran H, Guo D, Xu J. Magnetic Response Combined with Bioactive Ion Therapy: A RONS-Scavenging Theranostic Nanoplatform for Thrombolysis and Renal Ischemia-Reperfusion Injury. ACS Nano 2023; 17:5695-5712. [PMID: 36930590 DOI: 10.1021/acsnano.2c12091] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Currently, the limited efficacy of antithrombotic treatments is attributed to the inadequacy of pure drugs and the low ability of drugs to target the thrombus site. More importantly, timely thrombolysis is essential to reduce the sequelae of cardiovascular disease, but ischemia-reperfusion injury (IRI) remains a major challenge that must be solved after blood flow recovery. Herein, a multifunctional therapeutic nanoparticle (NP) based on Fe3O4 and strontium ions encapsulated in mesoporous polydopamine was successfully constructed and then loaded with TNK-tPA (FeM@Sr-TNK NPs). The NPs (59.9 min) significantly prolonged the half-life of thrombolytic drugs, which was 3.04 times that of TNK (19.7 min), and they had good biological safety. The NPs were shown to pass through vascular models with different inner diameters, curvatures, and stenosis under magnetic targeting and to enable accurate diagnosis of thrombi by photoacoustic imaging. NPs combined with the magnetic hyperthermia technique were used to accelerate thrombolysis and quickly open blocked blood vessels. Then, renal IRI-induced functional metabolic disorder and tissue damage were evidently attenuated by scavenging toxic reactive oxygen and nitrogen species and through the protective effects of bioactive ion therapy, including reduced apoptosis, increased angiogenesis, and inhibited fibrosis. In brief, we constructed a multifunctional nanoplatform for integrating a "diagnosis-therapy-protection" approach to achieve comprehensive management from thrombus to renal IRI, promoting the advancement of related technologies.
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Affiliation(s)
- Lian Xu
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
- Chongqing Key Laboratory of Ultrasound Molecular Imaging and Department of Ultrasound, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
- State Key Laboratory of Ultrasound in Medicine and Engineering, Chongqing Medical University, Chongqing 400016, PR China
| | - Ying Luo
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Qianying Du
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Wenli Zhang
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Liu Hu
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Ni Fang
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Junrui Wang
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Jia Liu
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Jun Zhou
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Yixin Zhong
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Yun Liu
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Haitao Ran
- Chongqing Key Laboratory of Ultrasound Molecular Imaging and Department of Ultrasound, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Dajing Guo
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Jie Xu
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
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Liu X, Li W, Wang M, Liu N, Yang Q, He Y, Hu D, Zhu R, Yin L. Inflammatory Cell-Inspired Cascade Nanozyme Induces Intracellular Radical Storm for Enhanced Anticancer Therapy. Small Methods 2023; 7:e2201641. [PMID: 36610035 DOI: 10.1002/smtd.202201641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Indexed: 06/17/2023]
Abstract
Manipulating intracellular levels of reactive oxygen and nitrogen species (RONS) is of great potential for cancer treatment. Inspired by the natural mechanism of a radical storm in inflammatory cells via activated and regulatable biocatalysis, the authors herein report a self-powered nanozyme that can enable RONS production in tumor cells via cascade reactions. The nanozymes are constructed via glucose oxidase (GOx)-templated inverse microemulsion polymerization from acrylamide, arginine-acrylamide, ferrocene-acrylate, and N,N'-bis(acryloyl)cystamine, followed by surface coating with hyaluronic acid. After targeted delivery into cancer cells, the nanozymes are dissociated by intracellular glutathione to release GOx, which decomposed glucose to generate gluconic acid and H2 O2 . Under such acidified conditions, H2 O2 efficiently oxidized pendant arginine residues to produce nitric oxide , transformed into a highly toxic hydroxyl radical and superoxide anion via ferrocene-mediated Fenton reaction and Haber-Weiss cycle, and simultaneously generated peroxynitrite anion via reaction between NO and ·O2 - , thus provoking the RONS radical storm to effectively eradicate A549 tumor cells both in vitro and in vivo. This nature-inspired enzyme-chemical dynamic therapy may provide a promising modality for anti-cancer treatment.
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Affiliation(s)
- Xun Liu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
- Department of Thoracic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, P. R. China
| | - Wei Li
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Mengru Wang
- Department of Gastroenterology, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, P. R. China
| | - Ningyu Liu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Qiang Yang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Yunjie He
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Duanmin Hu
- Department of Gastroenterology, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, P. R. China
| | - Rongying Zhu
- Department of Thoracic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, P. R. China
| | - Lichen Yin
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
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9
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Sutter J, Bruggeman PJ, Wigdahl B, Krebs FC, Miller V. Manipulation of Oxidative Stress Responses by Non-Thermal Plasma to Treat Herpes Simplex Virus Type 1 Infection and Disease. Int J Mol Sci 2023; 24:4673. [PMID: 36902102 PMCID: PMC10003306 DOI: 10.3390/ijms24054673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/16/2023] [Accepted: 02/24/2023] [Indexed: 03/04/2023] Open
Abstract
Herpes simplex virus type 1 (HSV-1) is a contagious pathogen with a large global footprint, due to its ability to cause lifelong infection in patients. Current antiviral therapies are effective in limiting viral replication in the epithelial cells to alleviate clinical symptoms, but ineffective in eliminating latent viral reservoirs in neurons. Much of HSV-1 pathogenesis is dependent on its ability to manipulate oxidative stress responses to craft a cellular environment that favors HSV-1 replication. However, to maintain redox homeostasis and to promote antiviral immune responses, the infected cell can upregulate reactive oxygen and nitrogen species (RONS) while having a tight control on antioxidant concentrations to prevent cellular damage. Non-thermal plasma (NTP), which we propose as a potential therapy alternative directed against HSV-1 infection, is a means to deliver RONS that affect redox homeostasis in the infected cell. This review emphasizes how NTP can be an effective therapy for HSV-1 infections through the direct antiviral activity of RONS and via immunomodulatory changes in the infected cells that will stimulate anti-HSV-1 adaptive immune responses. Overall, NTP application can control HSV-1 replication and address the challenges of latency by decreasing the size of the viral reservoir in the nervous system.
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Affiliation(s)
- Julia Sutter
- Center for Molecular Virology and Gene Therapy, Institute for Molecular Medicine and Infectious Disease, Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Peter J. Bruggeman
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
| | - Brian Wigdahl
- Center for Molecular Virology and Gene Therapy, Institute for Molecular Medicine and Infectious Disease, Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Fred C. Krebs
- Center for Molecular Virology and Gene Therapy, Institute for Molecular Medicine and Infectious Disease, Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Vandana Miller
- Center for Molecular Virology and Gene Therapy, Institute for Molecular Medicine and Infectious Disease, Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA 19129, USA
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10
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Chuesaard T, Peankid P, Thaworn S, Jaradrattanapaiboon A, Veerana M, Panngom K. Different Effects of Reactive Species Generated from Chemical Donors on Seed Germination, Growth, and Chemical Contents of Oryza sativa L. Plants (Basel) 2023; 12:765. [PMID: 36840122 PMCID: PMC9966467 DOI: 10.3390/plants12040765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/07/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Reactive oxygen and nitrogen species (RONS) play an important role as signaling molecules in redox reactions throughout a plant life cycle. The purpose of this study was to assess how hydrogen peroxide (H2O2), a reactive oxygen species (ROS) and reactive nitrogen species (RNS) generated from sodium nitroprusside (SNP) and sodium nitrite, affects the germination, growth, and chemical contents of two rice cultivars (Pathum Tani and Sanpatong). The results showed that RNS generated from chemical donors and, especially, H2O2, enhanced the germination of the studied rice cultivars. Among the three chemical donors, H2O2 showed the best efficacy of the reactive species for activating early seed germination, followed by sodium nitrite and SNP. The highest percentage of seed germination rose to 99% at 6 h germination time after treatment with 25 mM of H2O2 for 24 h. Moreover, H2O2 produced a significant increase in the α-amylase activity and total soluble proteins. It was observed that a treatment with H2O2 on germinated seeds produced radicles with a dark blue color for longer than treatments with sodium nitrite and SNP. Our findings imply that H2O2 had a critical role in improving the germination and altering the chemical contents of rice seeds.
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Affiliation(s)
- Thanyarat Chuesaard
- Basic Science, Maejo University Phrae Campus, Rong Kwang, Phrae 54140, Thailand
| | - Penpilai Peankid
- Forest Management Program, Maejo University Phrae Campus, Rong Kwang, Phrae 54140, Thailand
| | - Suwannee Thaworn
- Agroforestry Program, Maejo University Phrae Campus, Rong Kwang, Phrae 54140, Thailand
| | | | - Mayura Veerana
- Department of Applied Radiation and Isotope, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Kamonporn Panngom
- Basic Science, Maejo University Phrae Campus, Rong Kwang, Phrae 54140, Thailand
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11
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Kwiatkowski M, Terebun P, Kučerová K, Tarabová B, Kovalová Z, Lavrikova A, Machala Z, Hensel K, Pawłat J. Evaluation of Selected Properties of Dielectric Barrier Discharge Plasma Jet. Materials (Basel) 2023; 16:1167. [PMID: 36770174 PMCID: PMC9918978 DOI: 10.3390/ma16031167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/23/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
In the technological processes requiring mild treatment, such as soft materials processing or medical applications, an important role is played by non-equilibrium plasma reactors with dielectric barrier discharge (DBD), that when generated in noble gases allows for the effective treatment of biological material at a low temperature. The aim of this study is to determine the operating parameters of an atmospheric pressure, radio-frequency DBD plasma jet reactor for the precise treatment of biological materials. The tested parameters were the shape of the discharge (its length and volume), current and voltage signals, as well as the power consumed by the reactor for various composition and flow rates of the working gas. To determine the applicability in medicine, the temperature, pH, concentrations of H2O2, NO2- and NO3- and Escherichia coli log reduction in the plasma treated liquids were determined. The obtained results show that for certain operating parameters, a narrow shape of plasma stream can generate significant amounts of H2O2, allowing for the mild decontamination of bacteria at a relatively low power of the system, safe for the treatment of biological materials.
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Affiliation(s)
- Michał Kwiatkowski
- Chair of Electrical Engineering and Electrotechnologies, Lublin University of Technology, 20-618 Lublin, Poland
| | - Piotr Terebun
- Chair of Electrical Engineering and Electrotechnologies, Lublin University of Technology, 20-618 Lublin, Poland
| | - Katarína Kučerová
- Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia
| | - Barbora Tarabová
- Institute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 3, 182 00 Prague, Czech Republic
| | - Zuzana Kovalová
- Institute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 3, 182 00 Prague, Czech Republic
| | - Aleksandra Lavrikova
- Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia
| | - Zdenko Machala
- Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia
| | - Karol Hensel
- Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia
| | - Joanna Pawłat
- Chair of Electrical Engineering and Electrotechnologies, Lublin University of Technology, 20-618 Lublin, Poland
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12
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Kim SJ, Seong MJ, Mun JJ, Bae JH, Joh HM, Chung TH. Differential Sensitivity of Melanoma Cells and Their Non-Cancerous Counterpart to Cold Atmospheric Plasma-Induced Reactive Oxygen and Nitrogen Species. Int J Mol Sci 2022; 23:ijms232214092. [PMID: 36430569 PMCID: PMC9698967 DOI: 10.3390/ijms232214092] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/11/2022] [Accepted: 11/12/2022] [Indexed: 11/18/2022] Open
Abstract
Despite continuous progress in therapy, melanoma is one of the most aggressive and malignant human tumors, often relapsing and metastasizing to almost all organs. Cold atmospheric plasma (CAP) is a novel anticancer tool that utilizes abundant reactive oxygen and nitrogen species (RONS) being deposited on the target cells and tissues. CAP-induced differential effects between non-cancerous and cancer cells were comparatively examined. Melanoma and non-cancerous skin fibroblast cells (counterparts; both cell types were isolated from the same patient) were used for plasma-cell interactions. The production of intracellular RONS, such as nitric oxide (NO), hydroxyl radical (•OH), and hydrogen peroxide (H2O2), increased remarkably only in melanoma cancer cells. It was observed that cancer cells morphed from spread to round cell shapes after plasma exposure, suggesting that they were more affected than non-cancerous cells in the same plasma condition. Immediately after both cell types were treated with plasma, there were no differences in the amount of extracellular H2O2 production, while Hanks' balanced salt solution-containing cancer cells had lower concentrations of H2O2 than that of non-cancerous cells at 1 h after treatment. The melanoma cells seemed to respond to CAP treatment with a greater rise in RONS and a higher consumption rate of H2O2 than homologous non-cancerous cells. These results suggest that differential sensitivities of non-cancerous skin and melanoma cells to CAP-induced RONS can enable the applicability of CAP in anticancer therapy.
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13
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Vieira SF, Gonçalves VMF, Llaguno CP, Macías F, Tiritan ME, Reis RL, Ferreira H, Neves NM. On the Bioactivity of Echinacea purpurea Extracts to Modulate the Production of Inflammatory Mediators. Int J Mol Sci 2022; 23:13616. [PMID: 36362404 PMCID: PMC9659013 DOI: 10.3390/ijms232113616] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/25/2022] [Accepted: 11/04/2022] [Indexed: 08/27/2023] Open
Abstract
Inflammatory diseases are the focus of several clinical studies, due to limitations and serious side effects of available therapies. Plant-based drugs (e.g., salicylic acid, morphine) have become landmarks in the pharmaceutical field. Therefore, we investigated the immunomodulatory effects of flowers, leaves, and roots from Echinacea purpurea. Ethanolic (EE) and dichloromethanolic extracts (DE) were obtained using the Accelerated Solvent Extractor and aqueous extracts (AE) were prepared under stirring. Their chemical fingerprint was evaluated by liquid chromatography-high resolution mass spectrometry (LC-HRMS). The pro- and anti-inflammatory effects, as well as the reduction in intracellular reactive oxygen and nitrogen species (ROS/RNS), of the different extracts were evaluated using non-stimulated and lipopolysaccharide-stimulated macrophages. Interestingly, AE were able to stimulate macrophages to produce pro-inflammatory cytokines (tumor necrosis factor -TNF-α, interleukin -IL-1β, and IL-6), and to generate ROS/RNS. Conversely, under an inflammatory scenario, all extracts reduced the amount of pro-inflammatory mediators. DE, alkylamides-enriched extracts, showed the strongest anti-inflammatory activity. Moreover, E. purpurea extracts demonstrated generally a more robust anti-inflammatory activity than clinically used anti-inflammatory drugs (dexamethasone, diclofenac, salicylic acid, and celecoxib). Therefore, E. purpurea extracts may be used to develop new effective therapeutic formulations for disorders in which the immune system is either overactive or impaired.
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Affiliation(s)
- Sara F. Vieira
- 3B’s Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
| | - Virgínia M. F. Gonçalves
- TOXRUN—Toxicology Research Unit, University Institute of Health Sciences (IUCS), CESPU, CRL, 4585-116 Gandra, Portugal
- UNIPRO—Oral Pathology and Rehabilitation Research Unit, University Institute of Health Sciences (IUCS), CESPU, CRL, 4585-116 Gandra, Portugal
| | - Carmen P. Llaguno
- Departamento de Edafoloxía e Química Agrícola, Facultade de Bioloxía, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Felipe Macías
- Departamento de Edafoloxía e Química Agrícola, Facultade de Bioloxía, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Maria Elizabeth Tiritan
- TOXRUN—Toxicology Research Unit, University Institute of Health Sciences (IUCS), CESPU, CRL, 4585-116 Gandra, Portugal
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia da Universidade do Porto, Rua Jorge de Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Rui L. Reis
- 3B’s Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
| | - Helena Ferreira
- 3B’s Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
| | - Nuno M. Neves
- 3B’s Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
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14
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Marches A, Clement E, Albérola G, Rols MP, Cousty S, Simon M, Merbahi N. Cold Atmospheric Plasma Jet Treatment Improves Human Keratinocyte Migration and Wound Closure Capacity without Causing Cellular Oxidative Stress. Int J Mol Sci 2022; 23. [PMID: 36142561 DOI: 10.3390/ijms231810650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/08/2022] [Accepted: 09/09/2022] [Indexed: 11/17/2022] Open
Abstract
Cold Atmospheric Plasma (CAP) is an emerging technology with great potential for biomedical applications such as sterilizing equipment and antitumor strategies. CAP has also been shown to improve skin wound healing in vivo, but the biological mechanisms involved are not well known. Our study assessed a possible effect of a direct helium jet CAP treatment on keratinocytes, in both the immortalized N/TERT-1 human cell line and primary keratinocytes obtained from human skin samples. The cells were covered with 200 µL of phosphate buffered saline and exposed to the helium plasma jet for 10−120 s. In our experimental conditions, micromolar concentrations of hydrogen peroxide, nitrite and nitrate were produced. We showed that long-time CAP treatments (≥60 s) were cytotoxic, reduced keratinocyte migration, upregulated the expression of heat shock protein 27 (HSP27) and induced oxidative cell stress. In contrast, short-term CAP treatments (<60 s) were not cytotoxic, did not affect keratinocyte proliferation and differentiation, and did not induce any changes in mitochondria, but they did accelerate wound closure in vitro by improving keratinocyte migration. In conclusion, these results suggest that helium-based CAP treatments improve wound healing by stimulating keratinocyte migration. The study confirms that CAP could be a novel therapeutic method to treat recalcitrant wounds.
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15
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Chio JCT, Punjani N, Hejrati N, Zavvarian MM, Hong J, Fehlings MG. Extracellular Matrix and Oxidative Stress Following Traumatic Spinal Cord Injury: Physiological and Pathophysiological Roles and Opportunities for Therapeutic Intervention. Antioxid Redox Signal 2022; 37:184-207. [PMID: 34465134 DOI: 10.1089/ars.2021.0120] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Significance: Traumatic spinal cord injury (SCI) causes significant disruption to neuronal, glial, vascular, and extracellular elements. The spinal cord extracellular matrix (ECM) comprises structural and communication proteins that are involved in reparative and regenerative processes after SCI. In the healthy spinal cord, the ECM helps maintain spinal cord homeostasis. After SCI, the damaged ECM limits plasticity and contributes to inflammation through the expression of damage-associated molecules such as proteoglycans. Recent Advances: Considerable insights have been gained by characterizing the origins of the gliotic and fibrotic scars, which not only reduce the spread of injury but also limit neuroregeneration. These properties likely limit the success of therapies used to treat patients with SCI. The ECM, which is a major contributor to the scars and normal physiological functions of the spinal cord, represents an exciting therapeutic target to enhance recovery post-SCI. Critical Issue: Various ECM-based preclinical therapies have been developed. These include disrupting scar components, inhibiting activity of ECM metalloproteinases, and maintaining iron homeostasis. Biomaterials have also been explored. However, the majority of these treatments have not experienced successful clinical translation. This could be due to the ECM and scars' polarizing roles. Future Directions: This review surveys the complexity involved in spinal ECM modifications, discusses new ECM-based combinatorial strategies, and explores the biomaterials evaluated in clinical trials, which hope to introduce new treatments that enhance recovery after SCI. These topics will incorporate oxidative species, which are both beneficial and harmful in reparative and regenerative processes after SCI, and not often assessed in pertinent literature. Antioxid. Redox Signal. 37, 184-207.
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Affiliation(s)
- Jonathon Chon Teng Chio
- Department of Genetics and Development, Krembil Brain Institute, University Health Network, Toronto, Canada.,Institute of Medical Science, University of Toronto, Toronto, Canada
| | - Nayaab Punjani
- Department of Genetics and Development, Krembil Brain Institute, University Health Network, Toronto, Canada.,Institute of Medical Science, University of Toronto, Toronto, Canada
| | - Nader Hejrati
- Department of Genetics and Development, Krembil Brain Institute, University Health Network, Toronto, Canada
| | - Mohammad-Masoud Zavvarian
- Department of Genetics and Development, Krembil Brain Institute, University Health Network, Toronto, Canada.,Institute of Medical Science, University of Toronto, Toronto, Canada
| | - James Hong
- Department of Genetics and Development, Krembil Brain Institute, University Health Network, Toronto, Canada
| | - Michael G Fehlings
- Department of Genetics and Development, Krembil Brain Institute, University Health Network, Toronto, Canada.,Institute of Medical Science, University of Toronto, Toronto, Canada.,Department of Surgery and Spine Program, University of Toronto, Toronto, Canada
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16
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Nasri Z, Ahmadi M, Striesow J, Ravandeh M, von Woedtke T, Wende K. Insight into the Impact of Oxidative Stress on the Barrier Properties of Lipid Bilayer Models. Int J Mol Sci 2022; 23:5932. [PMID: 35682621 DOI: 10.3390/ijms23115932] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/20/2022] [Accepted: 05/21/2022] [Indexed: 12/10/2022] Open
Abstract
As a new field of oxidative stress-based therapy, cold physical plasma is a promising tool for several biomedical applications due to its potential to create a broad diversity of reactive oxygen and nitrogen species (RONS). Although proposed, the impact of plasma-derived RONS on the cell membrane lipids and properties is not fully understood. For this purpose, the changes in the lipid bilayer functionality under oxidative stress generated by an argon plasma jet (kINPen) were investigated by electrochemical techniques. In addition, liquid chromatography-tandem mass spectrometry was employed to analyze the plasma-induced modifications on the model lipids. Various asymmetric bilayers mimicking the structure and properties of the erythrocyte cell membrane were transferred onto a gold electrode surface by Langmuir-Blodgett/Langmuir-Schaefer deposition techniques. A strong impact of cholesterol on membrane permeabilization by plasma-derived species was revealed. Moreover, the maintenance of the barrier properties is influenced by the chemical composition of the head group. Mainly the head group size and its hydrogen bonding capacities are relevant, and phosphatidylcholines are significantly more susceptible than phosphatidylserines and other lipid classes, underlining the high relevance of this lipid class in membrane dynamics and cell physiology.
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17
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de Mendonça ELSS, Fragoso MBT, de Oliveira JM, Xavier JA, Goulart MOF, de Oliveira ACM. Gestational Diabetes Mellitus: The Crosslink among Inflammation, Nitroxidative Stress, Intestinal Microbiota and Alternative Therapies. Antioxidants (Basel) 2022; 11:129. [PMID: 35052633 PMCID: PMC8773111 DOI: 10.3390/antiox11010129] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 12/30/2021] [Accepted: 01/04/2022] [Indexed: 01/09/2023] Open
Abstract
Gestational diabetes mellitus (GDM) is characterized by a set of metabolic complications arising from adaptive failures to the pregnancy period. Estimates point to a prevalence of 3 to 15% of pregnancies. Its etiology includes intrinsic and extrinsic aspects of the progenitress, which may contribute to the pathophysiogenesis of GDM. Recently, researchers have identified that inflammation, oxidative stress, and the gut microbiota participate in the development of the disease, with potentially harmful effects on the health of the maternal-fetal binomial, in the short and long terms. In this context, alternative therapies were investigated from two perspectives: the modulation of the intestinal microbiota, with probiotics and prebiotics, and the use of natural products with antioxidant and anti-inflammatory properties, which may mitigate the endogenous processes of the GDM, favoring the health of the mother and her offspring, and in a future perspective, alleviating this critical public health problem.
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Affiliation(s)
- Elaine Luiza Santos Soares de Mendonça
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceio 57072-970, Alagoas, Brazil; (E.L.S.S.d.M.); (M.B.T.F.); (J.M.d.O.); (J.A.X.)
| | - Marilene Brandão Tenório Fragoso
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceio 57072-970, Alagoas, Brazil; (E.L.S.S.d.M.); (M.B.T.F.); (J.M.d.O.); (J.A.X.)
| | - Jerusa Maria de Oliveira
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceio 57072-970, Alagoas, Brazil; (E.L.S.S.d.M.); (M.B.T.F.); (J.M.d.O.); (J.A.X.)
| | - Jadriane Almeida Xavier
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceio 57072-970, Alagoas, Brazil; (E.L.S.S.d.M.); (M.B.T.F.); (J.M.d.O.); (J.A.X.)
| | - Marília Oliveira Fonseca Goulart
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceio 57072-970, Alagoas, Brazil; (E.L.S.S.d.M.); (M.B.T.F.); (J.M.d.O.); (J.A.X.)
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18
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Rothwell JG, Alam D, Carter DA, Soltani B, McConchie R, Zhou R, Cullen PJ, Mai-Prochnow A. The Antimicrobial Efficacy Of Plasma Activated Water Against Listeria and E. coli Is Modulated By Reactor Design And Water Composition. J Appl Microbiol 2021; 132:2490-2500. [PMID: 34957649 DOI: 10.1111/jam.15429] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 11/30/2022]
Abstract
AIMS This study aimed to compare the efficacy of plasma activated water (PAW) generated by two novel plasma reactors against pathogenic foodborne illness organisms. METHODS AND RESULTS The antimicrobial efficacy of PAW produced by a bubble spark discharge (BSD) reactor and a dielectric barrier discharge-diffuser (DBDD) reactor operating at atmospheric conditions with air, multiple discharge frequencies and Milli-Q and tap water, was investigated with model organisms Listeria innocua and Escherichia coli in situ. Optimal conditions were subsequently employed for pathogenic bacteria Listeria monocytogenes, E. coli and Salmonella enterica. DBDD-PAW reduced more than 6-log of bacteria within 1 minute. The BSD-PAW, while attaining high log reduction, was less effective. Analysis of physicochemical properties revealed that BSD-PAW had a greater variety of reactive species than DBDD-PAW. Scavenger assays designed to specifically sequester reactive species demonstrated a critical role of superoxide, particularly in DBDD-PAW. CONCLUSIONS DBDD-PAW demonstrated rapid antimicrobial activity against pathogenic bacteria, with superoxide the critical reactive species. SIGNIFICANCE AND IMPACT OF STUDY This study demonstrates the potential of DBDD-PAW produced using tap water and air as a feasible and cost-effective option for antimicrobial applications, including food safety.
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Affiliation(s)
- Joanna G Rothwell
- ARC Training Centre for Food Safety in the Fresh Produce Industry, School of Life and Environmental Sciences, Sydney Institute of Agriculture, Faculty of Science, The University of Sydney, New South Wales, Australia
| | - David Alam
- School of Chemical and Biomolecular Engineering, The University of Sydney, New South Wales, Australia
| | - Dee A Carter
- ARC Training Centre for Food Safety in the Fresh Produce Industry, School of Life and Environmental Sciences, Sydney Institute of Agriculture, Faculty of Science, The University of Sydney, New South Wales, Australia.,The Marie Bashir Institute for Infectious Diseases and Biosecurity, University of Sydney, New South Wales, Australia
| | - Behdad Soltani
- School of Chemical and Biomolecular Engineering, The University of Sydney, New South Wales, Australia
| | - Robyn McConchie
- ARC Training Centre for Food Safety in the Fresh Produce Industry, School of Life and Environmental Sciences, Sydney Institute of Agriculture, Faculty of Science, The University of Sydney, New South Wales, Australia
| | - Renwu Zhou
- School of Chemical and Biomolecular Engineering, The University of Sydney, New South Wales, Australia
| | - Patrick J Cullen
- School of Chemical and Biomolecular Engineering, The University of Sydney, New South Wales, Australia
| | - Anne Mai-Prochnow
- School of Chemical and Biomolecular Engineering, The University of Sydney, New South Wales, Australia
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19
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Catalani E, Giovarelli M, Zecchini S, Perrotta C, Cervia D. Oxidative Stress and Autophagy as Key Targets in Melanoma Cell Fate. Cancers (Basel) 2021; 13:cancers13225791. [PMID: 34830947 PMCID: PMC8616245 DOI: 10.3390/cancers13225791] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/10/2021] [Accepted: 11/17/2021] [Indexed: 01/18/2023] Open
Abstract
Melanoma originates from the malignant transformation of melanocytes and is one of the most aggressive forms of cancer. The recent approval of several drugs has increased the chance of survival although a significant subset of patients with metastatic melanoma do not show a long-lasting response to these treatments. The complex cross-talk between oxidative stress and the catabolic process autophagy seems to play a central role in all aspects of melanoma pathophysiology, from initiation to progression and metastasis, including drug resistance. However, determining the fine role of autophagy in cancer death and in response to redox disruption is still a fundamental challenge in order to advance both basic and translational aspects of this field. In order to summarize the interactions among reactive oxygen and nitrogen species, autophagy machinery and proliferation/growth/death/apoptosis/survival, we provide here a narrative review of the preclinical evidence for drugs/treatments that modulate oxidative stress and autophagy in melanoma cells. The significance and the potential for pharmacological targeting (also through multiple and combination approaches) of these two different events, which can contribute independently or simultaneously to the fate of melanoma, may help to define new processes and their interconnections underlying skin cancer biology and unravel new reliable approaches.
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Affiliation(s)
- Elisabetta Catalani
- Department for Innovation in Biological, Agro-Food and Forest Systems (DIBAF), Università degli Studi della Tuscia, Largo dell’Università snc, 01100 Viterbo, Italy;
| | - Matteo Giovarelli
- Department of Biomedical and Clinical Sciences “Luigi Sacco” (DIBIC), Università degli Studi di Milano, Via G.B. Grassi 74, 20157 Milano, Italy; (M.G.); (S.Z.)
| | - Silvia Zecchini
- Department of Biomedical and Clinical Sciences “Luigi Sacco” (DIBIC), Università degli Studi di Milano, Via G.B. Grassi 74, 20157 Milano, Italy; (M.G.); (S.Z.)
| | - Cristiana Perrotta
- Department of Biomedical and Clinical Sciences “Luigi Sacco” (DIBIC), Università degli Studi di Milano, Via G.B. Grassi 74, 20157 Milano, Italy; (M.G.); (S.Z.)
- Correspondence: (C.P.); (D.C.)
| | - Davide Cervia
- Department for Innovation in Biological, Agro-Food and Forest Systems (DIBAF), Università degli Studi della Tuscia, Largo dell’Università snc, 01100 Viterbo, Italy;
- Correspondence: (C.P.); (D.C.)
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20
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Waskow A, Ibba L, Leftley M, Howling A, Ambrico PF, Furno I. An In Situ FTIR Study of DBD Plasma Parameters for Accelerated Germination of Arabidopsis thaliana Seeds. Int J Mol Sci 2021; 22:ijms222111540. [PMID: 34768976 PMCID: PMC8584140 DOI: 10.3390/ijms222111540] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/14/2021] [Accepted: 10/20/2021] [Indexed: 11/16/2022] Open
Abstract
Current agricultural practices are not sustainable; however, the non-thermal plasma treatment of seeds may be an eco-friendly alternative to alter macroscopic plant growth parameters. Despite numerous successful results of plasma-seed treatments reported in the literature, the plasma-treatment parameters required to improve plant growth remain elusive due to the plethora of physical, chemical, and biological variables. In this study, we investigate the optimal conditions in our surface dielectric barrier discharge (SDBD) setup, using a parametric study, and attempt to understand relevant species in the plasma treatment using in situ Fourier transform infrared (FTIR) absorption spectroscopy. Our results suggest that treatment time and voltage are key parameters for accelerated germination; however, no clear conclusion on causative agents can be drawn.
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Affiliation(s)
- Alexandra Waskow
- Swiss Plasma Center (SPC), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland; (L.I.); (M.L.); (A.H.); (I.F.)
- Correspondence:
| | - Lorenzo Ibba
- Swiss Plasma Center (SPC), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland; (L.I.); (M.L.); (A.H.); (I.F.)
| | - Max Leftley
- Swiss Plasma Center (SPC), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland; (L.I.); (M.L.); (A.H.); (I.F.)
| | - Alan Howling
- Swiss Plasma Center (SPC), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland; (L.I.); (M.L.); (A.H.); (I.F.)
| | - Paolo F. Ambrico
- CNR, Istituto per la Scienza e Tecnologia dei Plasmi, Sede di Bari, Via Amendola 122/D, 70126 Bari, Italy;
| | - Ivo Furno
- Swiss Plasma Center (SPC), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland; (L.I.); (M.L.); (A.H.); (I.F.)
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21
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Nasri Z, Memari S, Wenske S, Clemen R, Martens U, Delcea M, Bekeschus S, Weltmann K, von Woedtke T, Wende K. Singlet-Oxygen-Induced Phospholipase A 2 Inhibition: A Major Role for Interfacial Tryptophan Dioxidation. Chemistry 2021; 27:14702-14710. [PMID: 34375468 PMCID: PMC8596696 DOI: 10.1002/chem.202102306] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Indexed: 11/16/2022]
Abstract
Several studies have revealed that various diseases such as cancer have been associated with elevated phospholipase A2 (PLA2 ) activity. Therefore, the regulation of PLA2 catalytic activity is undoubtedly vital. In this study, effective inactivation of PLA2 due to reactive species produced from cold physical plasma as a source to model oxidative stress is reported. We found singlet oxygen to be the most relevant active agent in PLA2 inhibition. A more detailed analysis of the plasma-treated PLA2 identified tryptophan 128 as a hot spot, rich in double oxidation. The significant dioxidation of this interfacial tryptophan resulted in an N-formylkynurenine product via the oxidative opening of the tryptophan indole ring. Molecular dynamics simulation indicated that the efficient interactions between the tryptophan residue and phospholipids are eliminated following tryptophan dioxidation. As interfacial tryptophan residues are predominantly involved in the attaching of membrane enzymes to the bilayers, tryptophan dioxidation and indole ring opening leads to the loss of essential interactions for enzyme binding and, consequently, enzyme inactivation.
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Affiliation(s)
- Zahra Nasri
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
| | - Seyedali Memari
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
- Institute of Anatomy and Cell BiologyUniversity Medicine GreifswaldFriedrich-Loeffler-Straße 23cGreifswald17487Germany
| | - Sebastian Wenske
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
| | - Ramona Clemen
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
| | - Ulrike Martens
- Institute of BiochemistryUniversity of GreifswaldFelix-Hausdorff-Straße 4Greifswald17489Germany
- Center for Innovation Competence (ZIK) HIKE (Humoral Immune Reactions in Cardiovascular Diseases)University of GreifswaldGreifswaldFleischmannstraße 4217489Germany
| | - Mihaela Delcea
- Institute of BiochemistryUniversity of GreifswaldFelix-Hausdorff-Straße 4Greifswald17489Germany
- Center for Innovation Competence (ZIK) HIKE (Humoral Immune Reactions in Cardiovascular Diseases)University of GreifswaldGreifswaldFleischmannstraße 4217489Germany
| | - Sander Bekeschus
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
| | - Klaus‐Dieter Weltmann
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
| | - Thomas von Woedtke
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
- Institute for Hygiene and Environmental MedicineUniversity Medicine GreifswaldGreifswaldWalther-Rathenau-Straße 49 A17489Germany
| | - Kristian Wende
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
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22
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Soni V, Adhikari M, Simonyan H, Lin L, Sherman JH, Young CN, Keidar M. In Vitro and In Vivo Enhancement of Temozolomide Effect in Human Glioblastoma by Non-Invasive Application of Cold Atmospheric Plasma. Cancers (Basel) 2021; 13:4485. [PMID: 34503293 PMCID: PMC8430547 DOI: 10.3390/cancers13174485] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/02/2021] [Accepted: 09/02/2021] [Indexed: 01/21/2023] Open
Abstract
Glioblastoma (GBM) is one of the most aggressive forms of adult brain cancers and is highly resistant to treatment, with a median survival of 12-18 months after diagnosis. The poor survival is due to its infiltrative pattern of invasion into the normal brain parenchyma, the diffuse nature of its growth, and its ability to quickly grow, spread, and relapse. Temozolomide is a well-known FDA-approved alkylating chemotherapy agent used for the treatment of high-grade malignant gliomas, and it has been shown to improve overall survival. However, in most cases, the tumor relapses. In recent years, CAP has been used as an emerging technology for cancer therapy. The purpose of this study was to implement a combination therapy of CAP and TMZ to enhance the effect of TMZ and apparently sensitize GBMs. In vitro evaluations in TMZ-sensitive and resistant GBM cell lines established a CAP chemotherapy enhancement and potential sensitization effect across various ranges of CAP jet application. This was further supported with in vivo findings demonstrating that a single CAP jet applied non-invasively through the skull potentially sensitizes GBM to subsequent treatment with TMZ. Gene functional enrichment analysis further demonstrated that co-treatment with CAP and TMZ resulted in a downregulation of cell cycle pathway genes. These observations indicate that CAP can be potentially useful in sensitizing GBM to chemotherapy and for the treatment of glioblastoma as a non-invasive translational therapy.
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Affiliation(s)
- Vikas Soni
- Department of Mechanical and Aerospace Engineering, MPNL, The George Washington University, Washington, DC 20052, USA; (V.S.); (M.A.); (L.L.); (J.H.S.)
| | - Manish Adhikari
- Department of Mechanical and Aerospace Engineering, MPNL, The George Washington University, Washington, DC 20052, USA; (V.S.); (M.A.); (L.L.); (J.H.S.)
| | - Hayk Simonyan
- Department of Pharmacology and Physiology, School of Medicine and Health Sciences, The George Washington University, Washington, DC 20052, USA;
| | - Li Lin
- Department of Mechanical and Aerospace Engineering, MPNL, The George Washington University, Washington, DC 20052, USA; (V.S.); (M.A.); (L.L.); (J.H.S.)
| | - Jonathan H. Sherman
- Department of Mechanical and Aerospace Engineering, MPNL, The George Washington University, Washington, DC 20052, USA; (V.S.); (M.A.); (L.L.); (J.H.S.)
| | - Colin N. Young
- Department of Pharmacology and Physiology, School of Medicine and Health Sciences, The George Washington University, Washington, DC 20052, USA;
| | - Michael Keidar
- Department of Mechanical and Aerospace Engineering, MPNL, The George Washington University, Washington, DC 20052, USA; (V.S.); (M.A.); (L.L.); (J.H.S.)
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23
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Ciesielska S, Slezak-Prochazka I, Bil P, Rzeszowska-Wolny J. Micro RNAs in Regulation of Cellular Redox Homeostasis. Int J Mol Sci 2021; 22:6022. [PMID: 34199590 PMCID: PMC8199685 DOI: 10.3390/ijms22116022] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/27/2021] [Accepted: 05/30/2021] [Indexed: 02/08/2023] Open
Abstract
In living cells Reactive Oxygen Species (ROS) participate in intra- and inter-cellular signaling and all cells contain specific systems that guard redox homeostasis. These systems contain both enzymes which may produce ROS such as NADPH-dependent and other oxidases or nitric oxide synthases, and ROS-neutralizing enzymes such as catalase, peroxiredoxins, thioredoxins, thioredoxin reductases, glutathione reductases, and many others. Most of the genes coding for these enzymes contain sequences targeted by micro RNAs (miRNAs), which are components of RNA-induced silencing complexes and play important roles in inhibiting translation of their targeted messenger RNAs (mRNAs). In this review we describe miRNAs that directly target and can influence enzymes responsible for scavenging of ROS and their possible role in cellular redox homeostasis. Regulation of antioxidant enzymes aims to adjust cells to survive in unstable oxidative environments; however, sometimes seemingly paradoxical phenomena appear where oxidative stress induces an increase in the levels of miRNAs which target genes which are supposed to neutralize ROS and therefore would be expected to decrease antioxidant levels. Here we show examples of such cellular behaviors and discuss the possible roles of miRNAs in redox regulatory circuits and further cell responses to stress.
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Affiliation(s)
- Sylwia Ciesielska
- Department of Systems Biology and Engineering, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, 44-100 Gliwice, Poland; (P.B.); (J.R.-W.)
- Biotechnology Centre, Silesian University of Technology, 44-100 Gliwice, Poland;
| | | | - Patryk Bil
- Department of Systems Biology and Engineering, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, 44-100 Gliwice, Poland; (P.B.); (J.R.-W.)
- Biotechnology Centre, Silesian University of Technology, 44-100 Gliwice, Poland;
| | - Joanna Rzeszowska-Wolny
- Department of Systems Biology and Engineering, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, 44-100 Gliwice, Poland; (P.B.); (J.R.-W.)
- Biotechnology Centre, Silesian University of Technology, 44-100 Gliwice, Poland;
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24
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Kordt M, Trautmann I, Schlie C, Lindner T, Stenzel J, Schildt A, Boeckmann L, Bekeschus S, Kurth J, Krause BJ, Vollmar B, Grambow E. Multimodal Imaging Techniques to Evaluate the Anticancer Effect of Cold Atmospheric Pressure Plasma. Cancers (Basel) 2021; 13:2483. [PMID: 34069689 PMCID: PMC8161248 DOI: 10.3390/cancers13102483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/14/2021] [Accepted: 05/16/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Skin cancer is the most frequent cancer worldwide and is divided into non-melanoma skin cancer, including basal cell carcinoma, as well as squamous cell carcinoma (SCC) and malignant melanoma (MM). METHODS This study evaluates the effects of cold atmospheric pressure plasma (CAP) on SCC and MM in vivo, employing a comprehensive approach using multimodal imaging techniques. Longitudinal MR and PET/CT imaging were performed to determine the anatomic and metabolic tumour volume over three-weeks in vivo. Additionally, the formation of reactive species after CAP treatment was assessed by non-invasive chemiluminescence imaging of L-012. Histological analysis and immunohistochemical staining for Ki-67, ApopTag®, F4/80, CAE, and CD31, as well as protein expression of PCNA, caspase-3 and cleaved-caspase-3, were performed to study proliferation, apoptosis, inflammation, and angiogenesis in CAP-treated tumours. RESULTS As the main result, multimodal in vivo imaging revealed a substantial reduction in tumour growth and an increase in reactive species after CAP treatment, in comparison to untreated tumours. In contrast, neither the markers for apoptosis, nor the metabolic activity of both tumour entities was affected by CAP. CONCLUSIONS These findings propose CAP as a potential adjuvant therapy option to established standard therapies of skin cancer.
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Affiliation(s)
- Marcel Kordt
- Rudolf-Zenker-Institute of Experimental Surgery, Rostock University Medical Center, 18057 Rostock, Germany; (I.T.); (C.S.); (B.V.); (E.G.)
| | - Isabell Trautmann
- Rudolf-Zenker-Institute of Experimental Surgery, Rostock University Medical Center, 18057 Rostock, Germany; (I.T.); (C.S.); (B.V.); (E.G.)
| | - Christin Schlie
- Rudolf-Zenker-Institute of Experimental Surgery, Rostock University Medical Center, 18057 Rostock, Germany; (I.T.); (C.S.); (B.V.); (E.G.)
| | - Tobias Lindner
- Core Facility Multimodal Small Animal Imaging, Rostock University Medical Center, 18057 Rostock, Germany; (T.L.); (J.S.); (A.S.); (B.J.K.)
| | - Jan Stenzel
- Core Facility Multimodal Small Animal Imaging, Rostock University Medical Center, 18057 Rostock, Germany; (T.L.); (J.S.); (A.S.); (B.J.K.)
| | - Anna Schildt
- Core Facility Multimodal Small Animal Imaging, Rostock University Medical Center, 18057 Rostock, Germany; (T.L.); (J.S.); (A.S.); (B.J.K.)
| | - Lars Boeckmann
- Clinic and Policlinic for Dermatology and Venereology, Rostock University Medical Center, 18057 Rostock, Germany;
| | - Sander Bekeschus
- Center for innovation competence (ZIK) plasmatis, Leibniz Institute for Plasma Science and Technology (INP), 17489 Greifswald, Germany;
| | - Jens Kurth
- Department of Nuclear Medicine, Rostock University Medical Center, 18055 Rostock, Germany;
| | - Bernd J. Krause
- Core Facility Multimodal Small Animal Imaging, Rostock University Medical Center, 18057 Rostock, Germany; (T.L.); (J.S.); (A.S.); (B.J.K.)
- Department of Nuclear Medicine, Rostock University Medical Center, 18055 Rostock, Germany;
| | - Brigitte Vollmar
- Rudolf-Zenker-Institute of Experimental Surgery, Rostock University Medical Center, 18057 Rostock, Germany; (I.T.); (C.S.); (B.V.); (E.G.)
| | - Eberhard Grambow
- Rudolf-Zenker-Institute of Experimental Surgery, Rostock University Medical Center, 18057 Rostock, Germany; (I.T.); (C.S.); (B.V.); (E.G.)
- Department for General, Visceral-, Vascular- and Transplantation Surgery, Rostock University Medical Center, 18057 Rostock, Germany
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25
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Dzimitrowicz A, Jamroz P, Pohl P, Babinska W, Terefinko D, Sledz W, Motyka-Pomagruk A. Multivariate Optimization of the FLC-dc-APGD-Based Reaction-Discharge System for Continuous Production of a Plasma-Activated Liquid of Defined Physicochemical and Anti-Phytopathogenic Properties. Int J Mol Sci 2021; 22:ijms22094813. [PMID: 34062832 PMCID: PMC8124219 DOI: 10.3390/ijms22094813] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/23/2021] [Accepted: 04/27/2021] [Indexed: 01/09/2023] Open
Abstract
To the present day, no efficient plant protection method against economically important bacterial phytopathogens from the Pectobacteriaceae family has been implemented into agricultural practice. In this view, we have performed a multivariate optimization of the operating parameters of the reaction-discharge system, employing direct current atmospheric pressure glow discharge, generated in contact with a flowing liquid cathode (FLC-dc-APGD), for the production of a plasma-activated liquid (PAL) of defined physicochemical and anti-phytopathogenic properties. As a result, the effect of the operating parameters on the conductivity of PAL acquired under these conditions was assessed. The revealed optimal operating conditions, under which the PAL of the highest conductivity was obtained, were as follows: flow rate of the solution equaled 2.0 mL min-1, the discharge current was 30 mA, and the inorganic salt concentration (ammonium nitrate, NH4NO3) in the solution turned out to be 0.50% (m/w). The developed PAL exhibited bacteriostatic and bactericidal properties toward Dickeya solani IFB0099 and Pectobacterium atrosepticum IFB5103 strains, with minimal inhibitory and minimal bactericidal concentrations equaling 25%. After 24 h exposure to 25% PAL, 100% (1-2 × 106) of D. solani and P. atrosepticum cells lost viability. We attributed the antibacterial properties of PAL to the presence of deeply penetrating, reactive oxygen and nitrogen species (RONS), which were, in this case, OH, O, O3, H2O2, HO2, NH, N2, N2+, NO2-, NO3-, and NH4+. Putatively, the generated low-cost, eco-friendly, easy-to-store, and transport PAL, exhibiting the required antibacterial and physicochemical properties, may find numerous applications in the plant protection sector.
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Affiliation(s)
- Anna Dzimitrowicz
- Department of Analytical Chemistry and Chemical Metallurgy, Wroclaw University of Science and Technology, 27 Wybrzeze St. Wyspianskiego, 50-370 Wroclaw, Poland; (P.J.); (P.P.); (D.T.)
- Correspondence: (A.D.); (A.M.-P.); Tel.: +48-71-320-2815 (A.D.); +48-58-523-6330 (A.M.-P.)
| | - Piotr Jamroz
- Department of Analytical Chemistry and Chemical Metallurgy, Wroclaw University of Science and Technology, 27 Wybrzeze St. Wyspianskiego, 50-370 Wroclaw, Poland; (P.J.); (P.P.); (D.T.)
| | - Pawel Pohl
- Department of Analytical Chemistry and Chemical Metallurgy, Wroclaw University of Science and Technology, 27 Wybrzeze St. Wyspianskiego, 50-370 Wroclaw, Poland; (P.J.); (P.P.); (D.T.)
| | - Weronika Babinska
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (W.B.); (W.S.)
| | - Dominik Terefinko
- Department of Analytical Chemistry and Chemical Metallurgy, Wroclaw University of Science and Technology, 27 Wybrzeze St. Wyspianskiego, 50-370 Wroclaw, Poland; (P.J.); (P.P.); (D.T.)
| | - Wojciech Sledz
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (W.B.); (W.S.)
| | - Agata Motyka-Pomagruk
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (W.B.); (W.S.)
- Correspondence: (A.D.); (A.M.-P.); Tel.: +48-71-320-2815 (A.D.); +48-58-523-6330 (A.M.-P.)
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26
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Sardella E, Veronico V, Gristina R, Grossi L, Cosmai S, Striccoli M, Buttiglione M, Fracassi F, Favia P. Plasma Treated Water Solutions in Cancer Treatments: The Contrasting Role of RNS. Antioxidants (Basel) 2021; 10:605. [PMID: 33920049 DOI: 10.3390/antiox10040605] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/29/2021] [Accepted: 04/11/2021] [Indexed: 12/21/2022] Open
Abstract
Plasma Treated Water Solutions (PTWS) recently emerged as a novel tool for the generation of Reactive Oxygen and Nitrogen Species (ROS and RNS) in liquids. The presence of ROS with a strong oxidative power, like hydrogen peroxide (H2O2), has been proposed as the main effector for the cancer-killing properties of PTWS. A protective role has been postulated for RNS, with nitric oxide (NO) being involved in the activation of antioxidant responses and cell survival. However, recent evidences proved that NO-derivatives in proper mixtures with ROS in PTWS could enhance rather than reduce the selectivity of PTWS-induced cancer cell death through the inhibition of specific antioxidant cancer defenses. In this paper we discuss the formation of RNS in different liquids with a Dielectric Barrier Discharge (DBD), to show that NO is absent in PTWS of complex composition like plasma treated (PT)-cell culture media used for in vitro experiments, as well as its supposed protective role. Nitrite anions (NO2-) instead, present in our PTWS, were found to improve the selective death of Saos2 cancer cells compared to EA.hy926 cells by decreasing the cytotoxic threshold of H2O2 to non-toxic values for the endothelial cell line.
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27
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Terefinko D, Dzimitrowicz A, Bielawska-Pohl A, Klimczak A, Pohl P, Jamroz P. The Influence of Cold Atmospheric Pressure Plasma-Treated Media on the Cell Viability, Motility, and Induction of Apoptosis in Human Non-Metastatic (MCF7) and Metastatic (MDA-MB-231) Breast Cancer Cell Lines. Int J Mol Sci 2021; 22:ijms22083855. [PMID: 33917790 PMCID: PMC8068204 DOI: 10.3390/ijms22083855] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/30/2021] [Accepted: 04/05/2021] [Indexed: 12/20/2022] Open
Abstract
Breast cancer remains the most common type of cancer, occurring in middle-aged women, and often leads to patients’ death. In this work, we applied a cold atmospheric pressure plasma (CAPP)-based reaction-discharge system, one that is unique in its class, for the production of CAPP-activated media (DMEM and Opti-MEM); it is intended for further uses in breast cancer treatment. To reach this aim, different volumes of DMEM or Opti-MEM were treated by CAPP. Prepared media were exposed to the CAPP treatment at seven different time intervals and examined in respect of their impact on cell viability and motility, and the induction of the apoptosis in human non-metastatic (MCF7) and metastatic (MDA-MB-231) breast cancer cell lines. As a control, the influence of CAPP-activated media on the viability and motility, and the type of the cell death of the non-cancerous human normal MCF10A cell line, was estimated. Additionally, qualitative and quantitative analyses of the reactive oxygen and nitrogen species (RONS), generated during the CAPP operation in contact with analyzed media, were performed. Based on the conducted research, it was found that 180 s (media activation time by CAPP) should be considered as the minimal toxic dose, which significantly decreases the cell viability and the migration of MDA-MB-231 cells, and also disturbs life processes of MCF7 cells. Finally, CAPP-activated media led to the apoptosis of analyzed cell lines, especially of the metastatic MDA-MB-231 cell line. Therefore, the application of the CAPP system may be potentially applied as a therapeutic strategy for the management of highly metastatic human breast cancer.
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Affiliation(s)
- Dominik Terefinko
- Department of Analytical Chemistry and Chemical Metallurgy, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze St. Wyspianskiego 27, 50-370 Wroclaw, Poland; (P.P.); (P.J.)
- Laboratory of Biology of Stem and Neoplastic Cells, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wroclaw, Poland; (A.B.-P.); (A.K.)
- Correspondence: (D.T.); (A.D.)
| | - Anna Dzimitrowicz
- Department of Analytical Chemistry and Chemical Metallurgy, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze St. Wyspianskiego 27, 50-370 Wroclaw, Poland; (P.P.); (P.J.)
- Correspondence: (D.T.); (A.D.)
| | - Aleksandra Bielawska-Pohl
- Laboratory of Biology of Stem and Neoplastic Cells, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wroclaw, Poland; (A.B.-P.); (A.K.)
| | - Aleksandra Klimczak
- Laboratory of Biology of Stem and Neoplastic Cells, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wroclaw, Poland; (A.B.-P.); (A.K.)
| | - Pawel Pohl
- Department of Analytical Chemistry and Chemical Metallurgy, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze St. Wyspianskiego 27, 50-370 Wroclaw, Poland; (P.P.); (P.J.)
| | - Piotr Jamroz
- Department of Analytical Chemistry and Chemical Metallurgy, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze St. Wyspianskiego 27, 50-370 Wroclaw, Poland; (P.P.); (P.J.)
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28
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Shaw P, Kumar N, Privat-Maldonado A, Smits E, Bogaerts A. Cold Atmospheric Plasma Increases Temozolomide Sensitivity of Three-Dimensional Glioblastoma Spheroids via Oxidative Stress-Mediated DNA Damage. Cancers (Basel) 2021; 13:cancers13081780. [PMID: 33917880 PMCID: PMC8068248 DOI: 10.3390/cancers13081780] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/03/2021] [Accepted: 04/05/2021] [Indexed: 12/31/2022] Open
Abstract
Simple Summary Cold atmospheric plasma (CAP) is gaining increasing interest for cancer treatment, for a wide range of cancer types. The studies performed with CAP as a standalone treatment modality serve as evidence that it can also be a suitable candidate for combination therapy. Temozolomide (TMZ) is used as the gold standard drug for glioblastoma treatment, one of the most aggressive malignant brain tumors in adults that remains incurable despite treatment advances. In this study, we explore whether CAP, a cocktail of reactive oxygen and nitrogen species, can amplify the cytotoxic effect on both TMZ-sensitive and TMZ-resistant glioblastoma multiforme (GBM) in three-dimensional tumor-like tissues through inhibiting the glutathione (GSH)/ glutathione peroxidase 4 (GPX4) antioxidant machinery, which can further lead to DNA damage. Abstract Glioblastoma multiforme (GBM) is the most frequent and aggressive primary malignant brain tumor in adults. Current standard radiotherapy and adjuvant chemotherapy with the alkylating agent temozolomide (TMZ) yield poor clinical outcome. This is due to the stem-like properties of tumor cells and genetic abnormalities in GBM, which contribute to resistance to TMZ and progression. In this study, we used cold atmospheric plasma (CAP) to enhance the sensitivity to TMZ through inhibition of antioxidant signaling (linked to TMZ resistance). We demonstrate that CAP indeed enhances the cytotoxicity of TMZ by targeting the antioxidant specific glutathione (GSH)/glutathione peroxidase 4 (GPX4) signaling. We optimized the threshold concentration of TMZ on five different GBM cell lines (U251, LN18, LN229, U87-MG and T98G). We combined TMZ with CAP and tested it on both TMZ-sensitive (U251, LN18 and LN229) and TMZ-resistant (U87-MG and T98G) cell lines using two-dimensional cell cultures. Subsequently, we used a three-dimensional spheroid model for the U251 (TMZ-sensitive) and U87-MG and T98G (TMZ-resistant) cells. The sensitivity of TMZ was enhanced, i.e., higher cytotoxicity and spheroid shrinkage was obtained when TMZ and CAP were administered together. We attribute the anticancer properties to the release of intracellular reactive oxygen species, through inhibiting the GSH/GPX4 antioxidant machinery, which can lead to DNA damage. Overall, our findings suggest that the combination of CAP with TMZ is a promising combination therapy to enhance the efficacy of TMZ towards the treatment of GBM spheroids.
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Affiliation(s)
- Priyanka Shaw
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, 2610 Antwerp, Belgium
- Solid Tumor Immunology Group, Center for Oncological Research (CORE), Integrated Personalized and Precision Oncology Network (IPPON), University of Antwerp, 2610 Antwerp, Belgium
| | - Naresh Kumar
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, 2610 Antwerp, Belgium
- National Institute of Pharmaceutical Education and Research, Guwahati, Guwahati 781125, Assam, India
| | - Angela Privat-Maldonado
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, 2610 Antwerp, Belgium
- Solid Tumor Immunology Group, Center for Oncological Research (CORE), Integrated Personalized and Precision Oncology Network (IPPON), University of Antwerp, 2610 Antwerp, Belgium
| | - Evelien Smits
- Solid Tumor Immunology Group, Center for Oncological Research (CORE), Integrated Personalized and Precision Oncology Network (IPPON), University of Antwerp, 2610 Antwerp, Belgium
| | - Annemie Bogaerts
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, 2610 Antwerp, Belgium
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Bekeschus S, Meyer D, Arlt K, von Woedtke T, Miebach L, Freund E, Clemen R. Argon Plasma Exposure Augments Costimulatory Ligands and Cytokine Release in Human Monocyte-Derived Dendritic Cells. Int J Mol Sci 2021; 22:3790. [PMID: 33917526 PMCID: PMC8038845 DOI: 10.3390/ijms22073790] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 03/29/2021] [Accepted: 03/30/2021] [Indexed: 02/06/2023] Open
Abstract
Cold physical plasma is a partially ionized gas expelling many reactive oxygen and nitrogen species (ROS/RNS). Several plasma devices have been licensed for medical use in dermatology, and recent experimental studies suggest their putative role in cancer treatment. In cancer therapies with an immunological dimension, successful antigen presentation and inflammation modulation is a key hallmark to elicit antitumor immunity. Dendritic cells (DCs) are critical for this task. However, the inflammatory consequences of DCs following plasma exposure are unknown. To this end, human monocyte-derived DCs (moDCs) were expanded from isolated human primary monocytes; exposed to plasma; and their metabolic activity, surface marker expression, and cytokine profiles were analyzed. As controls, hydrogen peroxide, hypochlorous acid, and peroxynitrite were used. Among all types of ROS/RNS-mediated treatments, plasma exposure exerted the most notable increase of activation markers at 24 h such as CD25, CD40, and CD83 known to be crucial for T cell costimulation. Moreover, the treatments increased interleukin (IL)-1α, IL-6, and IL-23. Altogether, this study suggests plasma treatment augmenting costimulatory ligand and cytokine expression in human moDCs, which might exert beneficial effects in the tumor microenvironment.
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Affiliation(s)
- Sander Bekeschus
- The Centre for Innovation Competence (ZIK) Plasmatis, Leibniz Institute for Plasma Science and Technology (INP), 17489 Greifswald, Germany; (D.M.); (K.A.); (T.v.W.); (L.M.); (E.F.); (R.C.)
| | - Dorothee Meyer
- The Centre for Innovation Competence (ZIK) Plasmatis, Leibniz Institute for Plasma Science and Technology (INP), 17489 Greifswald, Germany; (D.M.); (K.A.); (T.v.W.); (L.M.); (E.F.); (R.C.)
| | - Kevin Arlt
- The Centre for Innovation Competence (ZIK) Plasmatis, Leibniz Institute for Plasma Science and Technology (INP), 17489 Greifswald, Germany; (D.M.); (K.A.); (T.v.W.); (L.M.); (E.F.); (R.C.)
| | - Thomas von Woedtke
- The Centre for Innovation Competence (ZIK) Plasmatis, Leibniz Institute for Plasma Science and Technology (INP), 17489 Greifswald, Germany; (D.M.); (K.A.); (T.v.W.); (L.M.); (E.F.); (R.C.)
- Institute of Hygiene and Environmental Medicine, Greifswald University Medical Center, 17475 Greifswald, Germany
| | - Lea Miebach
- The Centre for Innovation Competence (ZIK) Plasmatis, Leibniz Institute for Plasma Science and Technology (INP), 17489 Greifswald, Germany; (D.M.); (K.A.); (T.v.W.); (L.M.); (E.F.); (R.C.)
- Department of General, Visceral, Thoracic, and Vascular Surgery, Greifswald University Medical Center, 17475 Greifswald, Germany
| | - Eric Freund
- The Centre for Innovation Competence (ZIK) Plasmatis, Leibniz Institute for Plasma Science and Technology (INP), 17489 Greifswald, Germany; (D.M.); (K.A.); (T.v.W.); (L.M.); (E.F.); (R.C.)
- Department of General, Visceral, Thoracic, and Vascular Surgery, Greifswald University Medical Center, 17475 Greifswald, Germany
| | - Ramona Clemen
- The Centre for Innovation Competence (ZIK) Plasmatis, Leibniz Institute for Plasma Science and Technology (INP), 17489 Greifswald, Germany; (D.M.); (K.A.); (T.v.W.); (L.M.); (E.F.); (R.C.)
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Bekeschus S. Combined Toxicity of Gas Plasma Treatment and Nanoparticles Exposure in Melanoma Cells In Vitro. Nanomaterials (Basel) 2021; 11:806. [PMID: 33809825 PMCID: PMC8004114 DOI: 10.3390/nano11030806] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/16/2021] [Accepted: 03/18/2021] [Indexed: 12/31/2022]
Abstract
Despite continuous advances in therapy, cancer remains a deadly disease. Over the past years, gas plasma technology emerged as a novel tool to target tumors, especially skin. Another promising anticancer approach are nanoparticles. Since combination therapies are becoming increasingly relevant in oncology, both gas plasma treatment and nanoparticle exposure were combined. A series of nanoparticles were investigated in parallel, namely, silica, silver, iron oxide, cerium oxide, titanium oxide, and iron-doped titanium oxide. For gas plasma treatment, the atmospheric pressure argon plasma jet kINPen was utilized. Using three melanoma cell lines, the two murine non-metastatic B16F0 and metastatic B16F10 cells and the human metastatic B-Raf mutant cell line SK-MEL-28, the combined cytotoxicity of both approaches was identified. The combined cytotoxicity of gas plasma treatment and nanoparticle exposure was consistent across all three cell lines for silica, silver, iron oxide, and cerium oxide. In contrast, for titanium oxide and iron-doped titanium oxide, significantly combined cytotoxicity was only observed in B16F10 cells.
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Affiliation(s)
- Sander Bekeschus
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany
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Mateu-Sanz M, Tornín J, Ginebra MP, Canal C. Cold Atmospheric Plasma: A New Strategy Based Primarily on Oxidative Stress for Osteosarcoma Therapy. J Clin Med 2021; 10:893. [PMID: 33672274 PMCID: PMC7926371 DOI: 10.3390/jcm10040893] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/10/2021] [Accepted: 02/15/2021] [Indexed: 12/12/2022] Open
Abstract
Osteosarcoma is the most common primary bone tumor, and its first line of treatment presents a high failure rate. The 5-year survival for children and teenagers with osteosarcoma is 70% (if diagnosed before it has metastasized) or 20% (if spread at the time of diagnosis), stressing the need for novel therapies. Recently, cold atmospheric plasmas (ionized gases consisting of UV-Vis radiation, electromagnetic fields and a great variety of reactive species) and plasma-treated liquids have been shown to have the potential to selectively eliminate cancer cells in different tumors through an oxidative stress-dependent mechanism. In this work, we review the current state of the art in cold plasma therapy for osteosarcoma. Specifically, we emphasize the mechanisms unveiled thus far regarding the action of plasmas on osteosarcoma. Finally, we review current and potential future approaches, emphasizing the most critical challenges for the development of osteosarcoma therapies based on this emerging technique.
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Affiliation(s)
- Miguel Mateu-Sanz
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Escola d’Enginyeria Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC), 08930 Barcelona, Spain; (M.M.-S.); (J.T.); (M.-P.G.)
- Barcelona Research Center in Multiscale Science and Engineering, UPC, 08930 Barcelona, Spain
- Research Centre for Biomedical Engineering (CREB), UPC, 08034 Barcelona, Spain
| | - Juan Tornín
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Escola d’Enginyeria Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC), 08930 Barcelona, Spain; (M.M.-S.); (J.T.); (M.-P.G.)
- Barcelona Research Center in Multiscale Science and Engineering, UPC, 08930 Barcelona, Spain
- Research Centre for Biomedical Engineering (CREB), UPC, 08034 Barcelona, Spain
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Escola d’Enginyeria Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC), 08930 Barcelona, Spain; (M.M.-S.); (J.T.); (M.-P.G.)
- Barcelona Research Center in Multiscale Science and Engineering, UPC, 08930 Barcelona, Spain
- Research Centre for Biomedical Engineering (CREB), UPC, 08034 Barcelona, Spain
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science and Technology (BIST), 08034 Barcelona, Spain
| | - Cristina Canal
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Escola d’Enginyeria Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC), 08930 Barcelona, Spain; (M.M.-S.); (J.T.); (M.-P.G.)
- Barcelona Research Center in Multiscale Science and Engineering, UPC, 08930 Barcelona, Spain
- Research Centre for Biomedical Engineering (CREB), UPC, 08034 Barcelona, Spain
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Zuccarelli R, Rodríguez-Ruiz M, Lopes-Oliveira PJ, Pascoal GB, Andrade SCS, Furlan CM, Purgatto E, Palma JM, Corpas FJ, Rossi M, Freschi L. Multifaceted roles of nitric oxide in tomato fruit ripening: NO-induced metabolic rewiring and consequences for fruit quality traits. J Exp Bot 2021; 72:941-958. [PMID: 33165620 DOI: 10.1093/jxb/eraa526] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 10/30/2020] [Indexed: 06/11/2023]
Abstract
Nitric oxide (NO) has been implicated as part of the ripening regulatory network in fleshy fruits. However, very little is known about the simultaneous action of NO on the network of regulatory events and metabolic reactions behind ripening-related changes in fruit color, taste, aroma and nutritional value. Here, we performed an in-depth characterization of the concomitant changes in tomato (Solanum lycopersicum) fruit transcriptome and metabolome associated with the delayed-ripening phenotype caused by NO supplementation at the pre-climacteric stage. Approximately one-third of the fruit transcriptome was altered in response to NO, including a multilevel down-regulation of ripening regulatory genes, which in turn restricted the production and tissue sensitivity to ethylene. NO also repressed hydrogen peroxide-scavenging enzymes, intensifying nitro-oxidative stress and S-nitrosation and nitration events throughout ripening. Carotenoid, tocopherol, flavonoid and ascorbate biosynthesis were differentially affected by NO, resulting in overaccumulation of ascorbate (25%) and flavonoids (60%), and impaired lycopene production. In contrast, the biosynthesis of compounds related to tomato taste (sugars, organic acids, amino acids) and aroma (volatiles) was slightly affected by NO. Our findings indicate that NO triggers extensive transcriptional and metabolic rewiring at the early ripening stage, modifying tomato antioxidant composition with minimal impact on fruit taste and aroma.
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Affiliation(s)
- Rafael Zuccarelli
- Departamento de Botânica, Universidade de São Paulo, USP, São Paulo, Brazil
| | | | | | - Grazieli B Pascoal
- Departamento de Alimentos e Nutrição Experimental, Universidade de São Paulo, USP, São Paulo, Brazil
- Curso de Graduação em Nutrição, Universidade Federal de Uberlândia, Minas Gerais, Brazil
| | - Sónia C S Andrade
- Departamento de Genética e Biologia Evolutiva, Universidade de São Paulo, USP, São Paulo, Brazil
| | - Cláudia M Furlan
- Departamento de Botânica, Universidade de São Paulo, USP, São Paulo, Brazil
| | - Eduardo Purgatto
- Departamento de Alimentos e Nutrição Experimental, Universidade de São Paulo, USP, São Paulo, Brazil
| | - José M Palma
- Group of Antioxidants, Free Radicals, and Nitric Oxide in Biotechnology, Food and Agriculture, Estación Experimental del Zaidín, CSIC, Granada, Spain
| | - Francisco J Corpas
- Group of Antioxidants, Free Radicals, and Nitric Oxide in Biotechnology, Food and Agriculture, Estación Experimental del Zaidín, CSIC, Granada, Spain
| | - Magdalena Rossi
- Departamento de Botânica, Universidade de São Paulo, USP, São Paulo, Brazil
| | - Luciano Freschi
- Departamento de Botânica, Universidade de São Paulo, USP, São Paulo, Brazil
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Tavares-da-Silva E, Pereira E, Pires AS, Neves AR, Braz-Guilherme C, Marques IA, Abrantes AM, Gonçalves AC, Caramelo F, Silva-Teixeira R, Mendes F, Figueiredo A, Botelho MF. Cold Atmospheric Plasma, a Novel Approach against Bladder Cancer, with Higher Sensitivity for the High-Grade Cell Line. Biology (Basel) 2021; 10:biology10010041. [PMID: 33435434 PMCID: PMC7828061 DOI: 10.3390/biology10010041] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/02/2021] [Accepted: 01/07/2021] [Indexed: 12/24/2022]
Abstract
Simple Summary Bladder cancer has a high incidence and mortality. Besides this, currently available therapies for this type of cancer have low efficacy and show considerable adverse effects, urging the need of new therapeutic approaches. Cold Atmospheric Plasma treatment presents itself as a promising alternative, having demonstrated antitumor effects against several types of cancer. The present work arises from a multidisciplinary team, namely, medical doctors and researchers, in an attempt to find new therapeutic strategies to fight bladder cancer. Therefore, our main objective is to evaluate Cold Atmospheric Plasma effects against bladder cancer, as well as the mechanisms by which it exerts its effects. The results obtained demonstrate that Cold Atmospheric Plasma treatment has a promising antitumor effect on bladder cancer, with higher sensitivity for the high-grade cell line. This new approach using Cold Atmospheric Plasma for the treatment of bladder cancer presents enormous clinical benefits, since it is able to selectively treat the tumor tissue, sparing the normal urothelium, with an additional glaring positive economic impact, since it entails a decrease in the cost of therapy in comparison with conventional therapeutic options. Abstract Antitumor therapies based on Cold Atmospheric Plasma (CAP) are an emerging medical field. In this work, we evaluated CAP effects on bladder cancer. Two bladder cancer cell lines were used, HT-1376 (stage III) and TCCSUP (stage IV). Cell proliferation assays were performed evaluating metabolic activity (MTT assay) and protein content (SRB assay). Cell viability, cell cycle, and mitochondrial membrane potential (Δψm) were assessed using flow cytometry. Reactive oxygen and nitrogen species (RONS) and reduced glutathione (GSH) were evaluated by fluorescence. The assays were carried out with different CAP exposure times. For both cell lines, we obtained a significant reduction in metabolic activity and protein content. There was a decrease in cell viability, as well as a cell cycle arrest in S phase. The Δψm was significantly reduced. There was an increase in superoxide and nitric oxide and a decrease in peroxide contents, while GSH content did not change. These results were dependent on the exposure time, with small differences for both cell lines, but overall, they were more pronounced in the TCCSUP cell line. CAP showed to have a promising antitumor effect on bladder cancer, with higher sensitivity for the high-grade cell line.
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Affiliation(s)
- Edgar Tavares-da-Silva
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, 3000-548 Coimbra, Portugal;
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal; (A.S.P.); (I.A.M.); (A.M.A.); (A.C.G.); (F.M.); (M.F.B.)
- Clinical Academic Center of Coimbra (CACC), 3000-548 Coimbra, Portugal; (A.R.N.); (C.B.-G.); (F.C.); (R.S.-T.)
- Centro Hospitalar e Universitário de Coimbra (CHUC), Department of Urology and Renal Transplantation, 3004-561 Coimbra, Portugal
- Correspondence: (E.T.-d.-S.); (E.P.)
| | - Eurico Pereira
- Clinical Academic Center of Coimbra (CACC), 3000-548 Coimbra, Portugal; (A.R.N.); (C.B.-G.); (F.C.); (R.S.-T.)
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, 3000-548 Coimbra, Portugal
- Correspondence: (E.T.-d.-S.); (E.P.)
| | - Ana S. Pires
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal; (A.S.P.); (I.A.M.); (A.M.A.); (A.C.G.); (F.M.); (M.F.B.)
- Clinical Academic Center of Coimbra (CACC), 3000-548 Coimbra, Portugal; (A.R.N.); (C.B.-G.); (F.C.); (R.S.-T.)
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, 3000-548 Coimbra, Portugal
| | - Ana R. Neves
- Clinical Academic Center of Coimbra (CACC), 3000-548 Coimbra, Portugal; (A.R.N.); (C.B.-G.); (F.C.); (R.S.-T.)
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, 3000-548 Coimbra, Portugal
- Project Development Office, Department of Mathematics and Computer Science, Eindhoven University of Technology (TU/e), PO Box 513 5600 MB Eindhoven, The Netherlands
| | - Catarina Braz-Guilherme
- Clinical Academic Center of Coimbra (CACC), 3000-548 Coimbra, Portugal; (A.R.N.); (C.B.-G.); (F.C.); (R.S.-T.)
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, 3000-548 Coimbra, Portugal
- University of Porto, Faculty of Medicine, 4200-319 Porto, Portugal
| | - Inês A. Marques
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal; (A.S.P.); (I.A.M.); (A.M.A.); (A.C.G.); (F.M.); (M.F.B.)
- Clinical Academic Center of Coimbra (CACC), 3000-548 Coimbra, Portugal; (A.R.N.); (C.B.-G.); (F.C.); (R.S.-T.)
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, 3000-548 Coimbra, Portugal
- University of Coimbra, Faculty of Pharmacy, 3000-548 Coimbra, Portugal
| | - Ana M. Abrantes
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal; (A.S.P.); (I.A.M.); (A.M.A.); (A.C.G.); (F.M.); (M.F.B.)
- Clinical Academic Center of Coimbra (CACC), 3000-548 Coimbra, Portugal; (A.R.N.); (C.B.-G.); (F.C.); (R.S.-T.)
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, 3000-548 Coimbra, Portugal
| | - Ana C. Gonçalves
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal; (A.S.P.); (I.A.M.); (A.M.A.); (A.C.G.); (F.M.); (M.F.B.)
- Clinical Academic Center of Coimbra (CACC), 3000-548 Coimbra, Portugal; (A.R.N.); (C.B.-G.); (F.C.); (R.S.-T.)
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Laboratory of Oncobiology and Hematology and University Clinic of Hematology of Faculty of Medicine, 3000-548 Coimbra, Portugal
| | - Francisco Caramelo
- Clinical Academic Center of Coimbra (CACC), 3000-548 Coimbra, Portugal; (A.R.N.); (C.B.-G.); (F.C.); (R.S.-T.)
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Laboratory of Biostatistics and Medical Informatics of Faculty of Medicine, 3000-548 Coimbra, Portugal
| | - Rafael Silva-Teixeira
- Clinical Academic Center of Coimbra (CACC), 3000-548 Coimbra, Portugal; (A.R.N.); (C.B.-G.); (F.C.); (R.S.-T.)
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, 3000-548 Coimbra, Portugal
| | - Fernando Mendes
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal; (A.S.P.); (I.A.M.); (A.M.A.); (A.C.G.); (F.M.); (M.F.B.)
- Clinical Academic Center of Coimbra (CACC), 3000-548 Coimbra, Portugal; (A.R.N.); (C.B.-G.); (F.C.); (R.S.-T.)
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, 3000-548 Coimbra, Portugal
- Politécnico de Coimbra, ESTeSC, DCBL, Rua 5 de Outubro-SM Bispo, Apartado 7006, 3046-854 Coimbra, Portugal
| | - Arnaldo Figueiredo
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, 3000-548 Coimbra, Portugal;
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal; (A.S.P.); (I.A.M.); (A.M.A.); (A.C.G.); (F.M.); (M.F.B.)
- Clinical Academic Center of Coimbra (CACC), 3000-548 Coimbra, Portugal; (A.R.N.); (C.B.-G.); (F.C.); (R.S.-T.)
- Centro Hospitalar e Universitário de Coimbra (CHUC), Department of Urology and Renal Transplantation, 3004-561 Coimbra, Portugal
| | - Maria Filomena Botelho
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal; (A.S.P.); (I.A.M.); (A.M.A.); (A.C.G.); (F.M.); (M.F.B.)
- Clinical Academic Center of Coimbra (CACC), 3000-548 Coimbra, Portugal; (A.R.N.); (C.B.-G.); (F.C.); (R.S.-T.)
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, 3000-548 Coimbra, Portugal
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Yokoyama T, Miyazaki S, Akagi H, Ikawa S, Kitano K. Kinetics of Bacterial Inactivation by Peroxynitric Acid in the Presence of Organic Contaminants. Appl Environ Microbiol 2021; 87:e01860-20. [PMID: 33127816 DOI: 10.1128/AEM.01860-20] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 10/26/2020] [Indexed: 11/20/2022] Open
Abstract
Low-temperature atmospheric-pressure plasma has been studied for disinfection purposes. When plasma is exposed to water, reactive oxygen and nitrogen species are generated and preserved in the water fraction (plasma-treated water [PTW]), which consequently exhibits bactericidal activity. At low temperatures, one of the bactericidal components of PTW is peroxynitric acid (PNA). Importantly, PNA can also be synthesized by chemical reaction, without exposure to plasma. In this study, we evaluated the bactericidal properties of PNA based on reaction kinetics in comparison with other disinfectants. The analysis, based on dose-dependent effects, showed that PNA exhibited about 1 and 10 times the bactericidal activity of hypochlorous acid (HOCl) and peracetic acid, respectively. In addition, we evaluated the influence of organic contaminants on the bactericidal effects of PNA and HOCl. The bactericidal potential of both disinfectants was reduced by bovine serum albumin (BSA); however, PNA showed about 30-times-higher resistance against BSA inhibition than HOCl. Analysis of the dose-dependent effects of PNA revealed that the inhibition of bactericidal effect was caused by its consumption. Further experiments using model substrates containing particular amino acid residues (Met, Cys, Lys, and Leu) suggested that the bacterial inactivation by PNA is less affected by BSA due to the low reactivity and narrow reactivity spectrum of PNA for amino acid residues. Overall, our results suggest that PNA has a great disinfection potential, especially in the presence of organic contaminants (e.g., on the surface of the human body and on medical instruments contaminated with biological fluids).IMPORTANCE A good disinfectant for the human body should have various properties, such as strong bactericidal activity, harmlessness to living tissues, and resistance against biological fluids (or other organic contaminants). Peroxynitric acid (PNA) showed a bactericidal effect that was several tens up to several hundred times higher per unit of molarity than that of sodium hypochlorite and peracetic acid, which are used as general disinfectants for medical equipment. Moreover, the high resistance of PNA to organic load was confirmed, indicating that PNA will inactivate bacteria effectively even on contaminated surfaces, such as used medical devices or the human body surface. Therefore, we propose that PNA can be used as a strong disinfectant for the human body.
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Kaur S, Prakash P, Bak DH, Hong SH, Cho C, Chung MS, Kim JH, Lee S, Bai HW, Lee SY, Chung BY, Lee SS. Regulation of Dual Activity of Ascorbate Peroxidase 1 From Arabidopsis thaliana by Conformational Changes and Posttranslational Modifications. Front Plant Sci 2021; 12:678111. [PMID: 34194454 PMCID: PMC8236860 DOI: 10.3389/fpls.2021.678111] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 05/21/2021] [Indexed: 05/20/2023]
Abstract
Ascorbate peroxidase (APX) is an important reactive oxygen species (ROS)-scavenging enzyme, which catalyzes the removal of hydrogen peroxide (H2O2) to prevent oxidative damage. The peroxidase activity of APX is regulated by posttranslational modifications (PTMs), such as S-nitrosylation, tyrosine nitration, and S-sulfhydration. In addition, it has been recently reported that APX functions as a molecular chaperone, protecting rice against heat stress. In this study, we attempted to identify the various functions of APX in Arabidopsis and the effects of PTMs on these functions. Cytosol type APX1 from Arabidopsis thaliana (AtAPX1) exists in multimeric forms ranging from dimeric to high-molecular-weight (HMW) complexes. Similar to the rice APX2, AtAPX1 plays a dual role behaving both as a regular peroxidase and a chaperone molecule. The dual activity of AtAPX1 was strongly related to its structural status. The main dimeric form of the AtAPX1 protein showed the highest peroxidase activity, whereas the HMW form exhibited the highest chaperone activity. Moreover, in vivo studies indicated that the structure of AtAPX1 was regulated by heat and salt stresses, with both involved in the association and dissociation of complexes, respectively. Additionally, we investigated the effects of S-nitrosylation, S-sulfhydration, and tyrosine nitration on the protein structure and functions using gel analysis and enzymatic activity assays. S-nitrosylation and S-sulfhydration positively regulated the peroxidase activity, whereas tyrosine nitration had a negative impact. However, no effects were observed on the chaperone function and the oligomeric status of AtAPX1. Our results will facilitate the understanding of the role and regulation of APX under abiotic stress and posttranslational modifications.
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Affiliation(s)
- Shubhpreet Kaur
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, South Korea
- Department of Radiation Science and Technology, University of Science and Technology, Daejeon, South Korea
| | - Prapti Prakash
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, South Korea
- Department of Radiation Science and Technology, University of Science and Technology, Daejeon, South Korea
| | - Dong-Ho Bak
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, South Korea
| | - Sung Hyun Hong
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, South Korea
| | - Chuloh Cho
- Crop Foundation Research Division, National Institute of Crop Science, RDA, Wanju, South Korea
| | - Moon-Soo Chung
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, South Korea
| | - Jin-Hong Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, South Korea
- Department of Radiation Science and Technology, University of Science and Technology, Daejeon, South Korea
| | - Sungbeom Lee
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, South Korea
- Department of Radiation Science and Technology, University of Science and Technology, Daejeon, South Korea
| | - Hyoung-Woo Bai
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, South Korea
- Department of Radiation Science and Technology, University of Science and Technology, Daejeon, South Korea
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21 PLUS), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Byung Yeoup Chung
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, South Korea
| | - Seung Sik Lee
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, South Korea
- Department of Radiation Science and Technology, University of Science and Technology, Daejeon, South Korea
- *Correspondence: Seung Sik Lee,
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Vieira SF, Ferreira H, Neves NM. Antioxidant and Anti-Inflammatory Activities of Cytocompatible Salvia officinalis Extracts: A Comparison between Traditional and Soxhlet Extraction. Antioxidants (Basel) 2020; 9:E1157. [PMID: 33233648 DOI: 10.3390/antiox9111157] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/13/2020] [Accepted: 11/18/2020] [Indexed: 12/16/2022] Open
Abstract
Chronic inflammation is characterized by an overproduction of several inflammatory mediators (e.g., reactive species and interleukins -IL) that play a central role in numerous diseases. The available therapies are often associated with serious side effects and, consequently, the need for safer drugs is of utmost importance. A plant traditionally used in the treatment of inflammatory conditions is Salvia officinalis. Therefore, conventional maceration and infusion of its leaves were performed to obtain hydroethanolic (HE-T) and aqueous extracts (AE-T), respectively. Their efficacy was compared to soxhlet extracts, namely aqueous (AE-S), hydroethanolic (HE-S), and ethanolic extracts (EE-S). Thin-layer chromatography demonstrated the presence of rosmarinic acid, carnosol, and/or carnosic acid in the different extracts. Generally, soxhlet provided extracts with higher antioxidant activities than traditional extraction. Moreover, under an inflammatory scenario, EE-S were the most effective, followed by HE-S, HE-T, AE-T, and AE-S, in the reduction of IL-6 and TNF-α production. Interestingly, the extracts presented higher or similar anti-inflammatory activity than diclofenac, salicylic acid, and celecoxib. In conclusion, the extraction method and the solvents of extraction influenced the antioxidant activity, but mainly the anti-inflammatory activity of the extracts. Therefore, this natural resource can enable the development of effective treatments for oxidative stress and inflammatory diseases.
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Fási L, Latif AD, Zupkó I, Lévai S, Dékány M, Béni Z, Könczöl Á, Balogh GT, Hunyadi A. AAPH or Peroxynitrite-Induced Biorelevant Oxidation of Methyl Caffeate Yields a Potent Antitumor Metabolite. Biomolecules 2020; 10:biom10111537. [PMID: 33187226 PMCID: PMC7697082 DOI: 10.3390/biom10111537] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 11/08/2020] [Indexed: 12/13/2022] Open
Abstract
Hydroxycinnamic acids represent a versatile group of dietary plant antioxidants. Oxidation of methyl-p-coumarate (pcm) and methyl caffeate (cm) was previously found to yield potent antitumor metabolites. Here, we report the formation of potentially bioactive products of pcm and cm oxidized with peroxynitrite (ONOO¯), a biologically relevant reactive nitrogen species (RNS), or with α,α'-azodiisobutyramidine dihydrochloride (AAPH) as a chemical model for reactive oxygen species (ROS). A continuous flow system was developed to achieve reproducible in situ ONOO¯ formation. Reaction mixtures were tested for their cytotoxic effect on HeLa, SiHa, MCF-7 and MDA-MB-231 cells. The reaction of pcm with ONOO¯ produced two fragments, an o-nitrophenol derivative, and a new chlorinated compound. Bioactivity-guided isolation from the reaction mixture of cm with AAPH produced two dimerization products, including a dihydrobenzofuran lignan that exerted strong antitumor activity in vitro, and has potent in vivo antimetastatic activity which was previously reported. This compound was also detected from the reaction between cm and ONOO¯. Our results demonstrate the ROS/RNS dependent formation of chemically stable metabolites, including a potent antitumor agent (5), from hydroxycinnamic acids. This suggests that diversity-oriented synthesis using ROS/RNS to obtain oxidized antioxidant metabolite mixtures may serve as a valid natural product-based drug discovery strategy.
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Affiliation(s)
- Laura Fási
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary; (L.F.); (A.D.L.)
| | - Ahmed Dhahir Latif
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary; (L.F.); (A.D.L.)
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary;
| | - István Zupkó
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary;
| | - Sándor Lévai
- Department of Chemistry, Gedeon Richter Plc., Gyömrői u. 19-21, H-1103 Budapest, Hungary; (S.L.); (M.D.); (Z.B.); (A.K.)
| | - Miklós Dékány
- Department of Chemistry, Gedeon Richter Plc., Gyömrői u. 19-21, H-1103 Budapest, Hungary; (S.L.); (M.D.); (Z.B.); (A.K.)
| | - Zoltán Béni
- Department of Chemistry, Gedeon Richter Plc., Gyömrői u. 19-21, H-1103 Budapest, Hungary; (S.L.); (M.D.); (Z.B.); (A.K.)
| | - Árpád Könczöl
- Department of Chemistry, Gedeon Richter Plc., Gyömrői u. 19-21, H-1103 Budapest, Hungary; (S.L.); (M.D.); (Z.B.); (A.K.)
| | - György Tibor Balogh
- Department of Chemistry, Gedeon Richter Plc., Gyömrői u. 19-21, H-1103 Budapest, Hungary; (S.L.); (M.D.); (Z.B.); (A.K.)
- Correspondence: (G.T.B.); (A.H.); Tel.: +36-1-4632174 (G.T.B.); +36-62-546-456 (A.H.)
| | - Attila Hunyadi
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary; (L.F.); (A.D.L.)
- Interdisciplinary Centre for Natural Products, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary
- Correspondence: (G.T.B.); (A.H.); Tel.: +36-1-4632174 (G.T.B.); +36-62-546-456 (A.H.)
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Gajewska J, Azzahra NA, Bingöl ÖA, Izbiańska-Jankowska K, Jelonek T, Deckert J, Floryszak-Wieczorek J, Arasimowicz-Jelonek M. Cadmium Stress Reprograms ROS/RNS Homeostasis in Phytophthora infestans (Mont.) de Bary. Int J Mol Sci 2020; 21:E8375. [PMID: 33171629 DOI: 10.3390/ijms21218375] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/04/2020] [Accepted: 11/05/2020] [Indexed: 12/22/2022] Open
Abstract
Heavy metal pollution causes many soils to become a toxic environment not only for plants, but also microorganisms; however, little is known how heavy metal contaminated environment affects metabolism of phytopathogens and their capability of infecting host plants. In this study the oomycete Phytophthora infestans (Mont.) de Bary, the most harmful pathogen of potato, growing under moderate cadmium stress (Cd, 5 mg/L) showed nitro-oxidative imbalance associated with an enhanced antioxidant response. Cadmium notably elevated the level of nitric oxide, superoxide and peroxynitrite that stimulated nitrative modifications within the RNA and DNA pools in the phytopathogen structures. In contrast, the protein pool undergoing nitration was diminished confirming that protein tyrosine nitration is a flexible element of the oomycete adaptive strategy to heavy metal stress. Finally, to verify whether Cd is able to modify P. infestans pathogenicity, a disease index and molecular assessment of disease progress were analysed indicating that Cd stress enhanced aggressiveness of vr P. infestans towards various potato cultivars. Taken together, Cd not only affected hyphal growth rate and caused biochemical changes in P. infestans structures, but accelerated the pathogenicity as well. The nitro-oxidative homeostasis imbalance underlies the phytopathogen adaptive strategy and survival in the heavy metal contaminated environment.
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Labay C, Roldán M, Tampieri F, Stancampiano A, Bocanegra PE, Ginebra MP, Canal C. Enhanced Generation of Reactive Species by Cold Plasma in Gelatin Solutions for Selective Cancer Cell Death. ACS Appl Mater Interfaces 2020; 12:47256-47269. [PMID: 33021783 DOI: 10.1021/acsami.0c12930] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Atmospheric pressure plasma jets generate reactive oxygen and nitrogen species (RONS) in liquids and biological media, which find application in the new area of plasma medicine. These plasma-treated liquids were demonstrated recently to possess selective properties on killing cancer cells and attracted attention toward new plasma-based cancer therapies. These allow for local delivery by injection in the tumor but can be quickly washed away by body fluids. By confining these RONS in a suitable biocompatible delivery system, great perspectives can be opened in the design of novel biomaterials aimed for cancer therapies. Gelatin solutions are evaluated here to store RONS generated by atmospheric pressure plasma jets, and their release properties are evaluated. The concentration of RONS was studied in 2% gelatin as a function of different plasma parameters (treatment time, nozzle distance, and gas flow) with two different plasma jets. Much higher production of reactive species (H2O2 and NO2-) was revealed in the polymer solution than in water after plasma treatment. The amount of RONS generated in gelatin is greatly improved with respect to water, with concentrations of H2O2 and NO2- between 2 and 12 times higher for the longest plasma treatments. Plasma-treated gelatin exhibited the release of these RONS to a liquid media, which induced an effective killing of bone cancer cells. Indeed, in vitro studies on the sarcoma osteogenic (SaOS-2) cell line exposed to plasma-treated gelatin led to time-dependent increasing cytotoxicity with the longer plasma treatment time of gelatin. While the SaOS-2 cell viability decreased to 12%-23% after 72 h for cells exposed to 3 min of treated gelatin, the viability of healthy cells (hMSC) was preserved (∼90%), establishing the selectivity of the plasma-treated gelatin on cancer cells. This sets the basis for designing improved hydrogels with high capacity to deliver RONS locally to tumors.
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Affiliation(s)
- Cédric Labay
- Biomaterials, Biomechanics and Tissue Engineering Group, Universitat Politècnica de Catalunya, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, UPC, Barcelona, Spain
- Research Centre for Biomedical Engineering, UPC, 08019 Barcelona, Spain
| | - Marcel Roldán
- Biomaterials, Biomechanics and Tissue Engineering Group, Universitat Politècnica de Catalunya, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, UPC, Barcelona, Spain
| | - Francesco Tampieri
- Biomaterials, Biomechanics and Tissue Engineering Group, Universitat Politècnica de Catalunya, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, UPC, Barcelona, Spain
- Research Centre for Biomedical Engineering, UPC, 08019 Barcelona, Spain
| | - Augusto Stancampiano
- GREMI, UMR 7344, CNRS/Université d'Orléans, BP 6744, CEDEX 2, 45067 Orléans, France
| | | | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Universitat Politècnica de Catalunya, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, UPC, Barcelona, Spain
- Research Centre for Biomedical Engineering, UPC, 08019 Barcelona, Spain
- Institute for Bioengineering of Catalonia, c/Baldiri i Reixach 10-12, 08028 Barcelona, Spain
| | - Cristina Canal
- Biomaterials, Biomechanics and Tissue Engineering Group, Universitat Politècnica de Catalunya, Av. Eduard Maristany 10-14, 08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, UPC, Barcelona, Spain
- Research Centre for Biomedical Engineering, UPC, 08019 Barcelona, Spain
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Wu BC, Skovbakke SL, Masoudi H, Hancock REW, Franzyk H. In vivo Anti-inflammatory Activity of Lipidated Peptidomimetics Pam-(Lys-βNspe) 6-NH 2 and Lau-(Lys-βNspe) 6-NH 2 Against PMA-Induced Acute Inflammation. Front Immunol 2020; 11:2102. [PMID: 32983167 PMCID: PMC7485003 DOI: 10.3389/fimmu.2020.02102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 08/03/2020] [Indexed: 01/09/2023] Open
Abstract
Host Defense Peptides (HDPs) are key components of innate immunity that exert antimicrobial, antibiofilm, and immunomodulatory activities in all higher organisms. Synthetic peptidomimetic analogs were designed to retain the desirable pharmacological properties of HDPs while having improved stability toward enzymatic degradation, providing enhanced potential for therapeutic applications. Lipidated peptide/β-peptoid hybrids [e.g., Pam-(Lys-βNspe)6-NH2 (PM1) and Lau-(Lys-βNspe)6-NH2 (PM2)] are proteolytically stable HDP mimetics displaying anti-inflammatory activity and formyl peptide receptor 2 antagonism in human and mouse immune cells in vitro. Here PM1 and PM2 were investigated for their in vivo anti-inflammatory activity in a phorbol 12-myristate 13-acetate (PMA)-induced acute mouse ear inflammation model. Topical administration of PM1 or PM2 led to attenuated PMA-induced ear edema, reduced local production of the pro-inflammatory chemokines MCP-1 and CXCL-1 as well as the cytokine IL-6. In addition, diminished neutrophil infiltration into PMA-inflamed ear tissue and suppressed local release of reactive oxygen and nitrogen species were observed upon treatment. The obtained results show that these two peptidomimetics exhibit anti-inflammatory effects comparable to that of the non-steroidal anti-inflammatory drug indomethacin, and hence possess a potential for treatment of inflammatory skin conditions.
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Affiliation(s)
- Bing C Wu
- Center for Microbial Diseases and Immunity Research, Department of Microbiology and Immunology, The University of British Columbia, Vancouver, BC, Canada
| | - Sarah L Skovbakke
- Biotherapeutic Glycoengineering and Immunology, Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs Lyngby, Denmark
| | - Hamid Masoudi
- Faculty of Medicine, Department of Pathology and Laboratory Medicine, St. Paul's Hospital, Vancouver, BC, Canada
| | - Robert E W Hancock
- Center for Microbial Diseases and Immunity Research, Department of Microbiology and Immunology, The University of British Columbia, Vancouver, BC, Canada
| | - Henrik Franzyk
- Faculty of Health and Medical Sciences, Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark
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Alfei S, Marengo B, Zuccari G. Oxidative Stress, Antioxidant Capabilities, and Bioavailability: Ellagic Acid or Urolithins? Antioxidants (Basel) 2020; 9:E707. [PMID: 32759749 PMCID: PMC7465258 DOI: 10.3390/antiox9080707] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 07/24/2020] [Accepted: 08/03/2020] [Indexed: 12/14/2022] Open
Abstract
Oxidative stress (OS), triggered by overproduction of reactive oxygen and nitrogen species, is the main mechanism responsible for several human diseases. The available one-target drugs often face such illnesses, by softening symptoms without eradicating the cause. Differently, natural polyphenols from fruits and vegetables possess multi-target abilities for counteracting OS, thus representing promising therapeutic alternatives and adjuvants. Although in several in vitro experiments, ellagitannins (ETs), ellagic acid (EA), and its metabolites urolithins (UROs) have shown similar great potential for the treatment of OS-mediated human diseases, only UROs have demonstrated in vivo the ability to reach tissues to a greater extent, thus appearing as the main molecules responsible for beneficial activities. Unfortunately, UROs production depends on individual metabotypes, and the consequent extreme variability limits their potentiality as novel therapeutics, as well as dietary assumption of EA, EA-enriched functional foods, and food supplements. This review focuses on the pathophysiology of OS; on EA and UROs chemical features and on the mechanisms of their antioxidant activity. A discussion on the clinical applicability of the debated UROs in place of EA and on the effectiveness of EA-enriched products is also included.
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Affiliation(s)
- Silvana Alfei
- Department of Pharmacy, University of Genoa, Viale Cembrano, 4, I-16148 Genoa, Italy;
| | - Barbara Marengo
- Department of Experimental Medicine—DIMES, Via Alberti L.B. 2, I-16132 Genoa, Italy;
| | - Guendalina Zuccari
- Department of Pharmacy, University of Genoa, Viale Cembrano, 4, I-16148 Genoa, Italy;
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Pasqual-Melo G, Nascimento T, Sanches LJ, Blegniski FP, Bianchi JK, Sagwal SK, Berner J, Schmidt A, Emmert S, Weltmann KD, von Woedtke T, Gandhirajan RK, Cecchini AL, Bekeschus S. Plasma Treatment Limits Cutaneous Squamous Cell Carcinoma Development In Vitro and In Vivo. Cancers (Basel) 2020; 12:E1993. [PMID: 32708225 PMCID: PMC7409328 DOI: 10.3390/cancers12071993] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/16/2020] [Accepted: 07/17/2020] [Indexed: 12/12/2022] Open
Abstract
Cutaneous squamous cell carcinoma (SCC) is the most prevalent cancer worldwide, increasing the cost of healthcare services and with a high rate of morbidity. Its etiology is linked to chronic ultraviolet (UV) exposure that leads to malignant transformation of keratinocytes. Invasive growth and metastasis are severe consequences of this process. Therapy-resistant and highly aggressive SCC is frequently fatal, exemplifying the need for novel treatment strategies. Cold physical plasma is a partially ionized gas, expelling therapeutic doses of reactive oxygen and nitrogen species that were investigated for their anticancer capacity against SCC in vitro and SCC-like lesions in vivo. Using the kINPen argon plasma jet, a selective growth-reducing action of plasma treatment was identified in two SCC cell lines in 2D and 3D cultures. In vivo, plasma treatment limited the progression of UVB-induced SSC-like skin lesions and dermal degeneration without compromising lesional or non-lesional skin. In lesional tissue, this was associated with a decrease in cell proliferation and the antioxidant transcription factor Nrf2 following plasma treatment, while catalase expression was increased. Analysis of skin adjacent to the lesions and determination of global antioxidant parameters confirmed the local but not systemic action of the plasma anticancer therapy in vivo.
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Affiliation(s)
- Gabriella Pasqual-Melo
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany; (G.P.-M.); (S.K.S.); (J.B.); (A.S.); (K.-D.W.); (T.v.W.); (R.K.J.)
| | - Thiago Nascimento
- Department of General Pathology, State University of Londrina, Rodovia Celso Garcia Cid, Londrina 86051-990, Brazil; (T.N.); (L.J.S.); (F.P.B.); (J.K.B.); (A.L.C.)
| | - Larissa Juliani Sanches
- Department of General Pathology, State University of Londrina, Rodovia Celso Garcia Cid, Londrina 86051-990, Brazil; (T.N.); (L.J.S.); (F.P.B.); (J.K.B.); (A.L.C.)
| | - Fernanda Paschoal Blegniski
- Department of General Pathology, State University of Londrina, Rodovia Celso Garcia Cid, Londrina 86051-990, Brazil; (T.N.); (L.J.S.); (F.P.B.); (J.K.B.); (A.L.C.)
| | - Julya Karen Bianchi
- Department of General Pathology, State University of Londrina, Rodovia Celso Garcia Cid, Londrina 86051-990, Brazil; (T.N.); (L.J.S.); (F.P.B.); (J.K.B.); (A.L.C.)
| | - Sanjeev Kumar Sagwal
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany; (G.P.-M.); (S.K.S.); (J.B.); (A.S.); (K.-D.W.); (T.v.W.); (R.K.J.)
| | - Julia Berner
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany; (G.P.-M.); (S.K.S.); (J.B.); (A.S.); (K.-D.W.); (T.v.W.); (R.K.J.)
- Clinic for Oral, Maxillofacial, and Plastic Surgery, Greifswald University Medical Center, Sauerbruchstr., 17475 Greifswald, Germany
| | - Anke Schmidt
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany; (G.P.-M.); (S.K.S.); (J.B.); (A.S.); (K.-D.W.); (T.v.W.); (R.K.J.)
| | - Steffen Emmert
- Clinic for Dermatology and Venereology, Rostock University Medical Center, Strempelstr. 13, 18057 Rostock, Germany;
| | - Klaus-Dieter Weltmann
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany; (G.P.-M.); (S.K.S.); (J.B.); (A.S.); (K.-D.W.); (T.v.W.); (R.K.J.)
| | - Thomas von Woedtke
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany; (G.P.-M.); (S.K.S.); (J.B.); (A.S.); (K.-D.W.); (T.v.W.); (R.K.J.)
- Institute for Hygiene and Environmental Medicine, Greifswald University Medical Center, Walther-Rathenau-Str. 48, 17489 Greifswald, Germany
| | - Rajesh Kumar Gandhirajan
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany; (G.P.-M.); (S.K.S.); (J.B.); (A.S.); (K.-D.W.); (T.v.W.); (R.K.J.)
| | - Alessandra Lourenço Cecchini
- Department of General Pathology, State University of Londrina, Rodovia Celso Garcia Cid, Londrina 86051-990, Brazil; (T.N.); (L.J.S.); (F.P.B.); (J.K.B.); (A.L.C.)
| | - Sander Bekeschus
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany; (G.P.-M.); (S.K.S.); (J.B.); (A.S.); (K.-D.W.); (T.v.W.); (R.K.J.)
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Mantri Y, Davidi B, Lemaster JE, Hariri A, Jokerst JV. Iodide-doped precious metal nanoparticles: measuring oxidative stress in vivo via photoacoustic imaging. Nanoscale 2020; 12:10511-10520. [PMID: 32396928 PMCID: PMC7331795 DOI: 10.1039/d0nr03047c] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Accumulation of reactive oxygen and nitrogen species (RONS) can induce cell damage and even cell death. RONS are short-lived species, which makes direct, precise, and real-time measurement difficult. Biologically-relevant RONS levels are in the nM-μM scale; hence, there is a need for highly sensitive RONS probes. We previously used hybrid gold-core silver-shell nanoparticles with mM sensitivity to H2O2. These particles reported the presence of RONS via spectral shifts which could easily be quantified via photoacoustic imaging. Here, we used halide doping to tune the electrochemical properties of these materials to better match the oxidation potential of RONS. This work describes the synthesis, characterization, and application of these AgI-coated gold nanorods (AgI/AuNR). The I : Ag molar ratio, pH, and initial Ag shell thickness were optimized for good RONS detection limits. Halide doping lowers the reduction potential of Ag from to resulting in a 1000-fold increase in H2O2 and 100 000-fold increase in ONOO- sensitivity. The AgI/AuNR system also etches 45-times faster than undoped Ag/AuNR. The AgI/AuNR easily reported the endogenously produced RONS in established cells lines as well as murine models.
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Affiliation(s)
- Yash Mantri
- Department of Bioengineering University of California, San Diego, La Jolla, CA, USA
| | - Barak Davidi
- Department of Physics, Fairfield University, Fairfield, CT, USA
| | - Jeanne E Lemaster
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA, USA.
| | - Ali Hariri
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA, USA.
| | - Jesse V Jokerst
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA, USA. and Materials Science Program, University of California, San Diego, La Jolla, CA, USA and Department of Radiology, University of California, San Diego, La Jolla, CA, USA
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Mourenza Á, Gil JA, Mateos LM, Letek M. Oxidative Stress-Generating Antimicrobials, a Novel Strategy to Overcome Antibacterial Resistance. Antioxidants (Basel) 2020; 9:antiox9050361. [PMID: 32357394 PMCID: PMC7278815 DOI: 10.3390/antiox9050361] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 04/22/2020] [Accepted: 04/24/2020] [Indexed: 02/07/2023] Open
Abstract
Antimicrobial resistance is becoming one of the most important human health issues. Accordingly, the research focused on finding new antibiotherapeutic strategies is again becoming a priority for governments and major funding bodies. The development of treatments based on the generation of oxidative stress with the aim to disrupt the redox defenses of bacterial pathogens is an important strategy that has gained interest in recent years. This approach is allowing the identification of antimicrobials with repurposing potential that could be part of combinatorial chemotherapies designed to treat infections caused by recalcitrant bacterial pathogens. In addition, there have been important advances in the identification of novel plant and bacterial secondary metabolites that may generate oxidative stress as part of their antibacterial mechanism of action. Here, we revised the current status of this emerging field, focusing in particular on novel oxidative stress-generating compounds with the potential to treat infections caused by intracellular bacterial pathogens.
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Wolff CM, Kolb JF, Weltmann KD, von Woedtke T, Bekeschus S. Combination Treatment with Cold Physical Plasma and Pulsed Electric Fields Augments ROS Production and Cytotoxicity in Lymphoma. Cancers (Basel) 2020; 12:E845. [PMID: 32244543 DOI: 10.3390/cancers12040845] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 03/28/2020] [Accepted: 03/28/2020] [Indexed: 02/08/2023] Open
Abstract
New approaches in oncotherapy rely on the combination of different treatments to enhance the efficacy of established monotherapies. Pulsed electric fields (PEFs) are an established method (electrochemotherapy) for enhancing cellular drug uptake while cold physical plasma is an emerging and promising anticancer technology. This study aimed to combine both technologies to elucidate their cytotoxic potential as well as the underlying mechanisms of the effects observed. An electric field generator (0.9–1.0 kV/cm and 100-μs pulse duration) and an atmospheric pressure argon plasma jet were employed for the treatment of lymphoma cell lines as a model system. PEF but not plasma treatment induced cell membrane permeabilization. Additive cytotoxicity was observed for the metabolic activity and viability of the cells while the sequence of treatment in the combination played only a minor role. Intriguingly, a parallel combination was more effective compared to a 15-min pause between both treatment regimens. A combination effect was also found for lipid peroxidation; however, none could be observed in the cytosolic and mitochondrial reactive oxygen species (ROS) production. The supplementation with either antioxidant, a pan-caspase-inhibitor or a ferroptosis inhibitor, all partially rescued lymphoma cells from terminal cell death, which contributes to the mechanistic understanding of this combination treatment.
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Volkov AG, Xu KG, Kolobov VI. Plasma-generated reactive oxygen and nitrogen species can lead to closure, locking and constriction of the Dionaea muscipula Ellis trap. J R Soc Interface 2020; 16:20180713. [PMID: 30958146 DOI: 10.1098/rsif.2018.0713] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Reactive oxygen and nitrogen species (RONS) can influence plant signalling, physiology and development. We have previously observed that an argon plasma jet in atmospheric air can activate plant movements and morphing structures in the Venus flytrap and Mimosa pudica similar to stimulation of their mechanosensors in vivo. In this paper, we found that the Venus flytrap can be activated by plasma jets without direct contact of plasma with the lobe, midrib or cilia. The observed effects are attributed to RONS, which are generated by argon and helium plasma jets in atmospheric air. We also found that application of H2O2 or HNO3 aqueous solutions to the midrib induces propagation of action potentials and trap closing similar to plasma effects. Control experiments showed that UV light or neutral gas flow did not induce morphing or closing of the trap. The trap closing by plasma is thus likely to be associated with the production of hydrogen peroxide by the cold plasma jet in air. Understanding plasma control of plant morphing could help design adaptive structures and bioinspired intelligent materials.
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Affiliation(s)
- Alexander G Volkov
- 1 Department of Chemistry and Biochemistry, Oakwood University , Huntsville, AL 35896 , USA
| | - Kunning G Xu
- 2 Mechanical and Aerospace Engineering Department, The University of Alabama in Huntsville , Huntsville, AL 35899 , USA
| | - Vladimir I Kolobov
- 3 The Center for Space Plasma and Aeronomic Research, The University of Alabama in Huntsville , Huntsville, AL 35899 , USA.,4 CFD Research Corporation , Huntsville, AL 35806 , USA
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Abstract
Biomembranes and lipid systems are rich in unsaturated lipid components and are subject to photo-induced lipid peroxidation. The peroxidized lipid products in cellular systems are known to affect the structural organization and function of the biomembrane. We employed molecular dynamics simulations to study the effects of phospholipid peroxidation on membrane properties and the permeability of different reactive species. The results suggest that when the lipids are peroxidized, the peroxide group moves toward the membrane surface, which causes the membrane system to expand laterally and increase in area. The permeability profile revealed that nitrogen species can easily permeate through the native and peroxidized system in comparison to oxygen species, suggesting its importance in plasma-based treatment. Thus, by breaching the energy barrier with lower energy, they can traverse the cell membrane and induce oxidative stress, which leads to apoptosis.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Surendra Kumar
- Gachon Institute of Pharmaceutical Science & Department of Pharmacy, College of Pharmacy, Gachon University, Incheon, South Korea
| | - Rashmi Rana
- Department of Research, Sir Ganga Ram Hospital, New Delhi, India
| | - Dharmendra K Yadav
- Gachon Institute of Pharmaceutical Science & Department of Pharmacy, College of Pharmacy, Gachon University, Incheon, South Korea
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48
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Sun F, Xie X, Zhang Y, Duan J, Ma M, Wang Y, Qiu D, Lu X, Yang G, He G. Effects of Cold Jet Atmospheric Pressure Plasma on the Structural Characteristics and Immunoreactivity of Celiac-Toxic Peptides and Wheat Storage Proteins. Int J Mol Sci 2020; 21:ijms21031012. [PMID: 32033029 PMCID: PMC7036898 DOI: 10.3390/ijms21031012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/16/2020] [Accepted: 01/20/2020] [Indexed: 01/09/2023] Open
Abstract
The present research reported the effects of structural properties and immunoreactivity of celiac-toxic peptides and wheat storage proteins modified by cold jet atmospheric pressure (CJAP) plasma. It could generate numerous high-energy excited atoms, photons, electrons, and reactive oxygen and nitrogen species, including O3, H2O2, •OH, NO2- and NO3- etc., to modify two model peptides and wheat storage proteins. The Orbitrap HR-LC-MS/MS was utilized to identify and quantify CJAP plasma-modified model peptide products. Backbone cleavage of QQPFP and PQPQLPY at specific proline and glutamine residues, accompanied by hydroxylation at the aromatic ring of phenylalanine and tyrosine residues, contributed to the reduction and modification of celiac-toxic peptides. Apart from fragmentation, oxidation, and agglomeration states were evaluated, including carbonyl formation and the decline of γ-gliadin. The immunoreactivity of gliadin extract declined over time, demonstrating a significant decrease by 51.95% after 60 min of CJAP plasma treatment in vitro. The CJAP plasma could initiate depolymerization of gluten polymer, thereby reducing the amounts of large-sized polymers. In conclusion, CJAP plasma could be employed as a potential technique in the modification and reduction of celiac-toxic peptides and wheat storage proteins.
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Affiliation(s)
- Fusheng Sun
- The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (F.S.); (X.X.); (Y.Z.); (Y.W.); (D.Q.)
| | - Xiaoxue Xie
- The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (F.S.); (X.X.); (Y.Z.); (Y.W.); (D.Q.)
| | - Yufan Zhang
- The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (F.S.); (X.X.); (Y.Z.); (Y.W.); (D.Q.)
| | - Jiangwei Duan
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; (J.D.); (M.M.); (X.L.)
| | - Mingyu Ma
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; (J.D.); (M.M.); (X.L.)
| | - Yaqiong Wang
- The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (F.S.); (X.X.); (Y.Z.); (Y.W.); (D.Q.)
| | - Ding Qiu
- The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (F.S.); (X.X.); (Y.Z.); (Y.W.); (D.Q.)
| | - Xinpei Lu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; (J.D.); (M.M.); (X.L.)
| | - Guangxiao Yang
- The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (F.S.); (X.X.); (Y.Z.); (Y.W.); (D.Q.)
- Correspondence: (G.Y.); (G.H.); Tel.: +86-27-87792271 (G.Y. & G.H.); Fax: +86-27-87792272 (G.Y. & G.H.)
| | - Guangyuan He
- The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (F.S.); (X.X.); (Y.Z.); (Y.W.); (D.Q.)
- Correspondence: (G.Y.); (G.H.); Tel.: +86-27-87792271 (G.Y. & G.H.); Fax: +86-27-87792272 (G.Y. & G.H.)
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Semmler ML, Bekeschus S, Schäfer M, Bernhardt T, Fischer T, Witzke K, Seebauer C, Rebl H, Grambow E, Vollmar B, Nebe JB, Metelmann HR, von Woedtke T, Emmert S, Boeckmann L. Molecular Mechanisms of the Efficacy of Cold Atmospheric Pressure Plasma (CAP) in Cancer Treatment. Cancers (Basel) 2020; 12:cancers12020269. [PMID: 31979114 PMCID: PMC7072164 DOI: 10.3390/cancers12020269] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/16/2020] [Accepted: 01/20/2020] [Indexed: 12/30/2022] Open
Abstract
Recently, the potential use of cold atmospheric pressure plasma (CAP) in cancer treatment has gained increasing interest. Especially the enhanced selective killing of tumor cells compared to normal cells has prompted researchers to elucidate the molecular mechanisms for the efficacy of CAP in cancer treatment. This review summarizes the current understanding of how CAP triggers intracellular pathways that induce growth inhibition or cell death. We discuss what factors may contribute to the potential selectivity of CAP towards cancer cells compared to their non-malignant counterparts. Furthermore, the potential of CAP to trigger an immune response is briefly discussed. Finally, this overview demonstrates how these concepts bear first fruits in clinical applications applying CAP treatment in head and neck squamous cell cancer as well as actinic keratosis. Although significant progress towards understanding the underlying mechanisms regarding the efficacy of CAP in cancer treatment has been made, much still needs to be done with respect to different treatment conditions and comparison of malignant and non-malignant cells of the same cell type and same donor. Furthermore, clinical pilot studies and the assessment of systemic effects will be of tremendous importance towards bringing this innovative technology into clinical practice.
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Affiliation(s)
- Marie Luise Semmler
- Clinic and Polyclinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (M.L.S.); (M.S.); (T.B.); (T.F.); (S.E.)
| | - Sander Bekeschus
- ZIK plasmatis, Leibniz-Institute for Plasma Science and Technology (INP Greifswald), 17489 Greifswald, Germany; (S.B.); (T.v.W.)
| | - Mirijam Schäfer
- Clinic and Polyclinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (M.L.S.); (M.S.); (T.B.); (T.F.); (S.E.)
| | - Thoralf Bernhardt
- Clinic and Polyclinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (M.L.S.); (M.S.); (T.B.); (T.F.); (S.E.)
| | - Tobias Fischer
- Clinic and Polyclinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (M.L.S.); (M.S.); (T.B.); (T.F.); (S.E.)
| | - Katharina Witzke
- Oral & Maxillofacial Surgery/Plastic Surgery, University Medicine Greifswald, 17489 Greifswald, Germany; (K.W.); (C.S.)
| | - Christian Seebauer
- Oral & Maxillofacial Surgery/Plastic Surgery, University Medicine Greifswald, 17489 Greifswald, Germany; (K.W.); (C.S.)
| | - Henrike Rebl
- Department of Cell Biology, University Medical Center Rostock, 18057 Rostock, Germany; (H.R.); (J.B.N.)
| | - Eberhard Grambow
- Institute for Experimental Surgery, Rostock University Medical Center, 18057 Rostock, Germany; (E.G.); (B.V.)
| | - Brigitte Vollmar
- Institute for Experimental Surgery, Rostock University Medical Center, 18057 Rostock, Germany; (E.G.); (B.V.)
| | - J. Barbara Nebe
- Department of Cell Biology, University Medical Center Rostock, 18057 Rostock, Germany; (H.R.); (J.B.N.)
| | - Hans-Robert Metelmann
- Oral & Maxillofacial Surgery/Plastic Surgery, University Medicine Greifswald, 17489 Greifswald, Germany; (K.W.); (C.S.)
| | - Thomas von Woedtke
- ZIK plasmatis, Leibniz-Institute for Plasma Science and Technology (INP Greifswald), 17489 Greifswald, Germany; (S.B.); (T.v.W.)
| | - Steffen Emmert
- Clinic and Polyclinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (M.L.S.); (M.S.); (T.B.); (T.F.); (S.E.)
| | - Lars Boeckmann
- Clinic and Polyclinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (M.L.S.); (M.S.); (T.B.); (T.F.); (S.E.)
- Correspondence: ; Tel.: +49-381-494-9760
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50
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Akter M, Jangra A, Choi SA, Choi EH, Han I. Non-Thermal Atmospheric Pressure Bio-Compatible Plasma Stimulates Apoptosis via p38/MAPK Mechanism in U87 Malignant Glioblastoma. Cancers (Basel) 2020; 12:E245. [PMID: 31963881 PMCID: PMC7016658 DOI: 10.3390/cancers12010245] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 01/15/2020] [Accepted: 01/16/2020] [Indexed: 11/18/2022] Open
Abstract
Nonthermal plasma is a promising novel therapy for the alteration of biological and clinical functions of cells and tissues, including apoptosis and inhibition of tumor progression. This therapy generates reactive oxygen and nitrogen species (RONS), which play a major role in anticancer effects. Previous research has verified that plasma jets can selectively induce apoptosis in various cancer cells, suggesting that it could be a potentially effective novel therapy in combination with or as an alternative to conventional therapeutic methods. In this study, we determined the effects of nonthermal air soft plasma jets on a U87 MG brain cancer cell line, including the dose- and time-dependent effects and the physicochemical and biological correlation between the RONS cascade and p38/mitogen-activated protein kinase (MAPK) signaling pathway, which contribute to apoptosis. The results indicated that soft plasma jets efficiently inhibit cell proliferation and induce apoptosis in U87 MG cells but have minimal effects on astrocytes. These findings revealed that soft plasma jets produce a potent cytotoxic effect via the initiation of cell cycle arrest and apoptosis. The production of reactive oxygen species (ROS) in cells was tested, and an intracellular ROS scavenger, N-acetyl cysteine (NAC), was examined. Our results suggested that soft plasma jets could potentially be used as an effective approach for anticancer therapy.
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Affiliation(s)
- Mahmuda Akter
- Department of Plasma Bio-Display, Kwangwoon University, Seoul 01897, Korea; (M.A.); (E.H.C.)
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Kwangwoon University, Seoul 01897, Korea
| | - Anshika Jangra
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 01897, Korea; (A.J.); (S.A.C.)
| | - Seung Ah Choi
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 01897, Korea; (A.J.); (S.A.C.)
| | - Eun Ha Choi
- Department of Plasma Bio-Display, Kwangwoon University, Seoul 01897, Korea; (M.A.); (E.H.C.)
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Kwangwoon University, Seoul 01897, Korea
- Department of Electronic and Biological Physics, Kwangwoon University, Seoul 01897, Korea
| | - Ihn Han
- Department of Plasma Bio-Display, Kwangwoon University, Seoul 01897, Korea; (M.A.); (E.H.C.)
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Kwangwoon University, Seoul 01897, Korea
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