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Abuyazid NH, Üner NB, Peyres SM, Mohan Sankaran R. Charge decay in the spatial afterglow of plasmas and its impact on diffusion regimes. Nat Commun 2023; 14:6776. [PMID: 37919301 PMCID: PMC10622414 DOI: 10.1038/s41467-023-42442-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 10/11/2023] [Indexed: 11/04/2023] Open
Abstract
The spatial afterglow is a region at the boundary of a non-equilibrium plasma where charged species relax into ambient equilibrium. In many applications, the spatial afterglow is the part of the plasma that interacts with surfaces, such as suspended particles or a material substrate. However, compared to the bulk plasma, there has been little effort devoted to studying the properties of the spatial afterglow, and a fundamental analysis has not yet been developed. Here, we apply double Langmuir probe measurements and develop an advection-diffusion-recombination model to provide a detailed description of charged species in the spatial afterglow over a wide range of pressures, temperatures, plasma dimensions, and flow rates. We find that the density of charged species in the spatial afterglow decays by orders of magnitude, which leads to a transition from ambipolar to free diffusion. These insights can be used to explain or predict experimental observations of phenomena, such as the charging of dust grains and the dose of charged species to a biomaterial.
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Affiliation(s)
- Nabiel H Abuyazid
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Champaign, IL, USA.
| | - Necip B Üner
- Department of Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana-Champaign, Champaign, IL, USA
- Chemical Engineering Department, Middle East Technical University, Ankara, Turkey
| | - Sean M Peyres
- Department of Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - R Mohan Sankaran
- Department of Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana-Champaign, Champaign, IL, USA.
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Ghasemi E, Nilforoushzadeh MA, Khani M, Amirkhani MA, Nouri M, Charipoor P, Eftekhari M, Izadpanah S, Shokri B. The quantitative investigation of spark plasma on skin parameters with skin elasticity, thickness, density, and biometric characteristics. Sci Rep 2023; 13:7738. [PMID: 37173354 PMCID: PMC10181997 DOI: 10.1038/s41598-023-34425-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 04/29/2023] [Indexed: 05/15/2023] Open
Abstract
Cold atmospheric plasma has been developed and utilized as a novel technique for skin rejuvenation because of its various effects on cells and living things. This study investigated the accuracy of this claim and any possible side effects of using spark plasma to rejuvenate skin. The present work is the first quantitative investigation using animal models. 12 Wistar rats were divided into two groups for this investigation. To compare the skin's natural process with the treated skin, the first group underwent a single session of plasma therapy, while the second group served as the control group. The back of the necks of the samples was shaved for 20 cm. Before beginning treatment, the MPA9 multifunctional skin tester was used to determine the melanin index, erythema index, and transepidermal water loss (TEWL). The skin's thickness and density were assessed using sonography, and its elasticity index was calculated using a Cutometer. The samples were exposed to plasma radiation in the designated area (in a triangular pattern). The abovementioned signs were examined immediately after the following therapy and at the weekly appointment 2-4 weeks later. Optical spectroscopy was also used to demonstrate the presence of active species. In this study, we found that a plasma spark therapy session significantly boosts skin elasticity, and the ultrasound results revealed a significantly increased skin thickness and density. The plasma increased the amount of skin surface evaporation, erythema, and melanin immediately following the treatment. However, 4 weeks later, it recovered to its former state and did not differ significantly from before the therapy.
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Affiliation(s)
- Erfan Ghasemi
- Laser and Plasma Research Institute, Shahid Beheshti University, G.C., P.O. Box, Tehran, 19839-6941, Iran
| | - Mohammad Ali Nilforoushzadeh
- Skin and Stem Cell Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Skin Repair Research Center, Jordan Dermatology and Hair Transplantation Center, Tehran, Iran
| | - Mohammadreza Khani
- Laser and Plasma Research Institute, Shahid Beheshti University, G.C., P.O. Box, Tehran, 19839-6941, Iran.
| | | | - Maryam Nouri
- Skin and Stem Cell Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Parisa Charipoor
- Laser and Plasma Research Institute, Shahid Beheshti University, G.C., P.O. Box, Tehran, 19839-6941, Iran
| | - Mohammad Eftekhari
- Laser and Plasma Research Institute, Shahid Beheshti University, G.C., P.O. Box, Tehran, 19839-6941, Iran
| | - Samira Izadpanah
- Skin and Stem Cell Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Babak Shokri
- Laser and Plasma Research Institute, Shahid Beheshti University, G.C., P.O. Box, Tehran, 19839-6941, Iran
- Physics Department of Shahid, Beheshti University, G.C., P.O. Box, Tehran, 19839-6941, Iran
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Kabarkouhi Z, Arjmand S, Ranaei Siadat SO, Shokri B. Cold atmospheric plasma treatment enhances recombinant model protein production in yeast Pichia pastoris. Sci Rep 2023; 13:6797. [PMID: 37100818 PMCID: PMC10133276 DOI: 10.1038/s41598-023-34078-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 04/24/2023] [Indexed: 04/28/2023] Open
Abstract
Cold atmospheric pressure plasma (CAP) has been described as a novel technology with expanding applications in biomedicine and biotechnology. In the present study, we provide a mildly stressful condition using non-lethal doses of CAP (120, 180, and 240 s) and evaluate its potential benefits on the recombinant production of a model protein (enhanced green fluorescent protein (eGFP)) in yeast Pichia pastoris. The measured eGFP fluorescence augmented proportional to CAP exposure time. After 240 s treatment with CAP, the measured fluorescent intensity of culture supernatant (after 72 h) and results of real-time PCR (after 24 h) indicated an 84% and 76% increase in activity and related RNA concentration, respectively. Real-time analysis of a list of genes involved in oxidative stress response revealed a significant and durable improvement in their expression at five h and 24 h following CAP exposure. The improvement of the recombinant model protein production may be partly explained by the impact of the RONS on cellular constituents and altering the expression of specific stress genes. In conclusion, using CAP strategy may be considered a valuable strategy to improve recombinant protein production, and deciphering the molecular background mechanism could be inspiring in the reverse metabolic engineering of host cells.
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Affiliation(s)
- Zeinab Kabarkouhi
- Laser and Plasma Research Institute, Shahid Beheshti University, P.O. Box: 1983969411, Tehran, Iran
| | - Sareh Arjmand
- Protein Research Center, Shahid Beheshti University, P.O. Box: 1983969411, Tehran, Iran
| | | | - Babak Shokri
- Laser and Plasma Research Institute, Shahid Beheshti University, P.O. Box: 1983969411, Tehran, Iran.
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Intradermally delivered mRNA-encapsulating extracellular vesicles for collagen-replacement therapy. Nat Biomed Eng 2023:10.1038/s41551-022-00989-w. [PMID: 36635419 DOI: 10.1038/s41551-022-00989-w] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 11/18/2022] [Indexed: 01/13/2023]
Abstract
The success of messenger RNA therapeutics largely depends on the availability of delivery systems that enable the safe, effective and stable translation of genetic material into functional proteins. Here we show that extracellular vesicles (EVs) produced via cellular nanoporation from human dermal fibroblasts, and encapsulating mRNA encoding for extracellular-matrix α1 type-I collagen (COL1A1) induced the formation of collagen-protein grafts and reduced wrinkle formation in the collagen-depleted dermal tissue of mice with photoaged skin. We also show that the intradermal delivery of the mRNA-loaded EVs via a microneedle array led to the prolonged and more uniform synthesis and replacement of collagen in the dermis of the animals. The intradermal delivery of EV-based COL1A1 mRNA may make for an effective protein-replacement therapy for the treatment of photoaged skin.
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Perrotti V, Caponio VCA, Muzio LL, Choi EH, Marcantonio MCD, Mazzone M, Kaushik NK, Mincione G. Open Questions in Cold Atmospheric Plasma Treatment in Head and Neck Cancer: A Systematic Review. Int J Mol Sci 2022; 23:ijms231810238. [PMID: 36142145 PMCID: PMC9498988 DOI: 10.3390/ijms231810238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/24/2022] [Accepted: 08/31/2022] [Indexed: 12/09/2022] Open
Abstract
Over the past decade, we witnessed a promising application of cold atmospheric plasma (CAP) in cancer therapy. The aim of this systematic review was to provide an exhaustive state of the art of CAP employed for the treatment of head and neck cancer (HNC), a tumor whose late diagnosis, local recurrence, distant metastases, and treatment failure are the main causes of patients’ death. Specifically, the characteristics and settings of the CAP devices and the in vitro and in vivo treatment protocols were summarized to meet the urgent need for standardization. Its molecular mechanisms of action, as well as the successes and pitfalls of current CAP applications in HNC, were discussed. Finally, the interesting emerging preclinical hypotheses that warrant further clinical investigation have risen. A total of 24 studies were included. Most studies used a plasma jet device (54.2%). Argon resulted as the mostly employed working gas (33.32%). Direct and indirect plasma application was reported in 87.5% and 20.8% of studies, respectively. In vitro investigations were 79.17%, most of them concerned with direct treatment (78.94%). Only eight (33.32%) in vivo studies were found; three were conducted in mice, and five on human beings. CAP showed pro-apoptotic effects more efficiently in tumor cells than in normal cells by altering redox balance in a way that oxidative distress leads to cell death. In preclinical studies, it exhibited efficacy and tolerability. Results from this systematic review pointed out the current limitations of translational application of CAP in the urge of standardization of the current protocols while highlighting promising effects as supporting treatment in HNC.
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Affiliation(s)
- Vittoria Perrotti
- Department of Medical, Oral and Biotechnological Sciences, University “G. d’Annunzio” Chieti-Pescara, 66100 Chieti, Italy
- Correspondence:
| | | | - Lorenzo Lo Muzio
- Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy
| | - Eun Ha Choi
- Plasma Bioscience Research Center, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea
| | - Maria Carmela Di Marcantonio
- Department of Innovative Technologies in Medicine & Dentistry, University “G. d’Annunzio” Chieti-Pescara, 66100 Chieti, Italy
| | - Mariangela Mazzone
- Department of Innovative Technologies in Medicine & Dentistry, University “G. d’Annunzio” Chieti-Pescara, 66100 Chieti, Italy
| | - Nagendra Kumar Kaushik
- Plasma Bioscience Research Center, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea
| | - Gabriella Mincione
- Department of Innovative Technologies in Medicine & Dentistry, University “G. d’Annunzio” Chieti-Pescara, 66100 Chieti, Italy
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