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Dr. Pankaj Attri
Kyushu University, Japan

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0 Ionic Liquids
0 Protein Folding
0 plasma
0 Plasma Chemistry
0 Plasma medicine

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Ionic Liquids
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Protein Folding
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Plasma Chemistry

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Journal article
Published: 27 May 2021 in International Journal of Biological Macromolecules
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Bacterial and mammalian proteins, such as lysozyme, are gaining increasing interest as anticancer drugs. This study aims to modify the lysozyme structure using cold atmospheric plasma to boost its cancer cell killing effect. We investigated the structure at acidic and neutral pH using various experimental techniques (circular dichroism, fluorescence, and mass spectrometry) and molecular dynamics simulations. The controlled structural modification of lysozyme at neutral pH enhances its activity, while the activity was lost at acidic pH at the same treatment conditions. Indeed, a larger number of amino acids were oxidized at acidic pH after plasma treatment, which results in a greater distortion of the lysozyme structure, whereas only limited structural changes were observed in lysozyme after plasma treatment at neutral pH. We found that the plasma-treated lysozyme significantly induced apoptosis to the cancer cells. Our results reveal that plasma-treated lysozyme could have potential as a new cancer cell killing drug.

ACS Style

Pankaj Attri; Nagendra Kumar Kaushik; Neha Kaushik; Dietmar Hammerschmid; Angela Privat-Maldonado; Joey De Backer; Masaharu Shiratani; Eun Ha Choi; Annemie Bogaerts. Plasma treatment causes structural modifications in lysozyme, and increases cytotoxicity towards cancer cells. International Journal of Biological Macromolecules 2021, 182, 1724 -1736.

AMA Style

Pankaj Attri, Nagendra Kumar Kaushik, Neha Kaushik, Dietmar Hammerschmid, Angela Privat-Maldonado, Joey De Backer, Masaharu Shiratani, Eun Ha Choi, Annemie Bogaerts. Plasma treatment causes structural modifications in lysozyme, and increases cytotoxicity towards cancer cells. International Journal of Biological Macromolecules. 2021; 182 ():1724-1736.

Chicago/Turabian Style

Pankaj Attri; Nagendra Kumar Kaushik; Neha Kaushik; Dietmar Hammerschmid; Angela Privat-Maldonado; Joey De Backer; Masaharu Shiratani; Eun Ha Choi; Annemie Bogaerts. 2021. "Plasma treatment causes structural modifications in lysozyme, and increases cytotoxicity towards cancer cells." International Journal of Biological Macromolecules 182, no. : 1724-1736.

Journal article
Published: 23 March 2021 in Japanese Journal of Applied Physics
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In recent years, cold atmospheric pressure plasma (CAP) applications in agriculture are rapidly increasing. This review covers the effect of CAP and plasma-treated liquid (PTL) on seeds. CAP treatment on seed alters the germination percentage, morphology (shoot height, root length, surface area, etc.), gene expression, and biochemical responses (changes in hormones, antioxidants, amino acids, total soluble sugar content, chlorophyll content, etc.). The changes were incorporated in yield-related parameters (fresh and dry weight of seedlings) and water absorption capacity after plasma treatment. Lastly, we discussed the current status of CAP and PTL use in agricultural land.

ACS Style

Pankaj Attri; Kazunori Koga; Takamasa Okumura; Masaharu Shiratani. Impact of atmospheric pressure plasma treated seeds on germination, morphology, gene expression and biochemical responses. Japanese Journal of Applied Physics 2021, 60, 040502 .

AMA Style

Pankaj Attri, Kazunori Koga, Takamasa Okumura, Masaharu Shiratani. Impact of atmospheric pressure plasma treated seeds on germination, morphology, gene expression and biochemical responses. Japanese Journal of Applied Physics. 2021; 60 (4):040502.

Chicago/Turabian Style

Pankaj Attri; Kazunori Koga; Takamasa Okumura; Masaharu Shiratani. 2021. "Impact of atmospheric pressure plasma treated seeds on germination, morphology, gene expression and biochemical responses." Japanese Journal of Applied Physics 60, no. 4: 040502.

Review
Published: 15 March 2021 in Journal of Composites Science
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Transition metal oxides (TMO) and their carbon composites have become a glittering upcoming material science candidate. Their interesting properties, such as their meticulous morphology, plentiful availability, flexible surface chemistry along with outstanding mechanical, thermal, and optical properties make them ideal for efficient photocatalytic dye degradation. An extensive range of TMO, and their carbon composites are reviewed highlighting the progression and opportunities for the photocatalytic degradation of dyes. Here, we concisely describe the numerous techniques to extend the optical absorption of these TMOs involving dye sensitization, metal doping, etc. Besides this, an overview of all aspects of dye degradation along with the prevailing challenges for future utilization and development of such nanocomposites towards highly efficient dye degradation system are also reported.

ACS Style

Preety Ahuja; Sanjeev Ujjain; Rajni Kanojia; Pankaj Attri. Transition Metal Oxides and Their Composites for Photocatalytic Dye Degradation. Journal of Composites Science 2021, 5, 82 .

AMA Style

Preety Ahuja, Sanjeev Ujjain, Rajni Kanojia, Pankaj Attri. Transition Metal Oxides and Their Composites for Photocatalytic Dye Degradation. Journal of Composites Science. 2021; 5 (3):82.

Chicago/Turabian Style

Preety Ahuja; Sanjeev Ujjain; Rajni Kanojia; Pankaj Attri. 2021. "Transition Metal Oxides and Their Composites for Photocatalytic Dye Degradation." Journal of Composites Science 5, no. 3: 82.

Journal article
Published: 13 March 2021 in Journal of Saudi Chemical Society
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Over the past few years, polymers shown comprehensive utilization in optical devices, solar cells, sensors, and other such devices. However, the efficiency of these devices remains a problem. We have synthesized new thiophene based, lowband gap polymer, poly(2-heptadecyl-4-vinylthieno[3,4-d] [1,3] selenazole) (PHVTS) and investigated the interactions between the PHVTS and ionic liquids (ILs), in this study. We have used imidazolium- and ammonium-family ILs, and studied the interactions using various spectroscopic techniques such UV–visible, FTIR, and confocal Raman spectroscopies. Additionally, we studied surface morphology of the polymer-IL film. Spectroscopic studies show that both families of ILs can interact with the newly synthesized polymer poly(2-heptadecyl-4-vinylthieno[3,4-d] [1,3] selenazole). However, the imidazolium-family Ionic Liquid-polymer (IL-polymer) mixture films show higher conductivities than ammonium-family IL–polymer mixture films.

ACS Style

Seunghyun Jeong; Joon Ho Yoon; Pankaj Attri; In Tae Kim. Changes in the physical properties of low bandgap polymer after interaction with ionic liquids. Journal of Saudi Chemical Society 2021, 25, 101227 .

AMA Style

Seunghyun Jeong, Joon Ho Yoon, Pankaj Attri, In Tae Kim. Changes in the physical properties of low bandgap polymer after interaction with ionic liquids. Journal of Saudi Chemical Society. 2021; 25 (5):101227.

Chicago/Turabian Style

Seunghyun Jeong; Joon Ho Yoon; Pankaj Attri; In Tae Kim. 2021. "Changes in the physical properties of low bandgap polymer after interaction with ionic liquids." Journal of Saudi Chemical Society 25, no. 5: 101227.

Journal article
Published: 22 February 2021 in Journal of Physics D: Applied Physics
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ACS Style

Chang-Hyun Song; Pankaj Attri; Sae-Kwang Ku; Ihn Han; Annemie Bogaerts; Eun Ha Choi. Cocktail of reactive species generated by cold atmospheric plasma: oral administration induces non-small cell lung cancer cell death. Journal of Physics D: Applied Physics 2021, 54, 185202 .

AMA Style

Chang-Hyun Song, Pankaj Attri, Sae-Kwang Ku, Ihn Han, Annemie Bogaerts, Eun Ha Choi. Cocktail of reactive species generated by cold atmospheric plasma: oral administration induces non-small cell lung cancer cell death. Journal of Physics D: Applied Physics. 2021; 54 (18):185202.

Chicago/Turabian Style

Chang-Hyun Song; Pankaj Attri; Sae-Kwang Ku; Ihn Han; Annemie Bogaerts; Eun Ha Choi. 2021. "Cocktail of reactive species generated by cold atmospheric plasma: oral administration induces non-small cell lung cancer cell death." Journal of Physics D: Applied Physics 54, no. 18: 185202.

Research article
Published: 28 January 2021 in Scientific Reports
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The use of low-temperature plasma for the pre-sowing seed treatment is still in the early stage of research; thus, numerous factors affecting germination percentage, seedling growth, and yield remains unknown. This study aimed to estimate how two critical factors, such as harvest year and seed coat color, affect the percentage of germination and seedling growth after plasma treatment. Radish seeds stored for 2 and 1 year after harvesting (harvested in 2017 and 2018) were sorted into two colors (brown and grey) to investigate the plasma effect on harvest year and seed coat color. We analyzed the amounts of seed phytohormones and antioxidant (γ-tocopherol) were analyzed using mass spectrometry, and physical changes were studied using SEM, EDX, and EPR to understand the mechanism of plasma-induced changes in radish seeds. The obtained results revealed that plasma treatment on seeds affects the germination kinetics, and the maximal germination percentage depends on seed color and the time of seed storage after harvest. Through this study, for the first time, we demonstrated that physical and chemical changes in radish seeds after plasma treatment depends upon the seed color and harvest year. Positive effects of plasma treatment on growth are stronger for sprouts from seeds harvested in 2017 than in 2018. The plasma treatment effect on the sprouts germinated from grey seeds effect was stronger than sprouts from brown radish seeds. The amounts of gibberellin A3 and abscisic acid in control seeds strongly depended on the seed color, and plasma induced changes were better in grey seeds harvested in 2017. Therefore, this study reveals that Air scalar-DBD plasma's reactive oxygen and nitrogen species (RONS) can efficiently accelerate germination and growth in older seeds.

ACS Style

Pankaj Attri; Kenji Ishikawa; Takamasa Okumura; Kazunori Koga; Masaharu Shiratani; Vida Mildaziene. Impact of seed color and storage time on the radish seed germination and sprout growth in plasma agriculture. Scientific Reports 2021, 11, 1 -10.

AMA Style

Pankaj Attri, Kenji Ishikawa, Takamasa Okumura, Kazunori Koga, Masaharu Shiratani, Vida Mildaziene. Impact of seed color and storage time on the radish seed germination and sprout growth in plasma agriculture. Scientific Reports. 2021; 11 (1):1-10.

Chicago/Turabian Style

Pankaj Attri; Kenji Ishikawa; Takamasa Okumura; Kazunori Koga; Masaharu Shiratani; Vida Mildaziene. 2021. "Impact of seed color and storage time on the radish seed germination and sprout growth in plasma agriculture." Scientific Reports 11, no. 1: 1-10.

Journal article
Published: 16 January 2021 in Applied Physics Express
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ACS Style

Pankaj Attri; Kazunori Koga; Masaharu Shiratani. Possible impact of plasma oxidation on the structure of the C-terminal domain of SARS-CoV-2 spike protein: a computational study. Applied Physics Express 2021, 14, 027002 .

AMA Style

Pankaj Attri, Kazunori Koga, Masaharu Shiratani. Possible impact of plasma oxidation on the structure of the C-terminal domain of SARS-CoV-2 spike protein: a computational study. Applied Physics Express. 2021; 14 (2):027002.

Chicago/Turabian Style

Pankaj Attri; Kazunori Koga; Masaharu Shiratani. 2021. "Possible impact of plasma oxidation on the structure of the C-terminal domain of SARS-CoV-2 spike protein: a computational study." Applied Physics Express 14, no. 2: 027002.

Journal article
Published: 22 December 2020 in Processes
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As the application of nanotechnology increases continuously, the need for controlled size nanoparticles also increases. Therefore, in this work, we discussed the growth mechanism of carbon nanoparticles generated in Ar+CH4 multi-hollow discharge plasmas. Using the plasmas, we succeeded in continuous generation of hydrogenated amorphous carbon nanoparticles with controlled size (25–220 nm) by the gas flow. Among the nanoparticle growth processes in plasmas, we confirmed the deposition of carbon-related radicals was the dominant process for the method. The size of nanoparticles was proportional to the gas residence time in holes of the discharge electrode. The radical deposition developed the nucleated nanoparticles during their transport in discharges, and the time of flight in discharges controlled the size of nanoparticles.

ACS Style

Sung Hwa Hwang; Kazunori Koga; Yuan Hao; Pankaj Attri; Takamasa Okumura; Kunihiro Kamataki; Naho Itagaki; Masaharu Shiratani; Jun-Seok Oh; Susumu Takabayashi; Tatsuyuki Nakatani. Time of Flight Size Control of Carbon Nanoparticles Using Ar+CH4 Multi-Hollow Discharge Plasma Chemical Vapor Deposition Method. Processes 2020, 9, 2 .

AMA Style

Sung Hwa Hwang, Kazunori Koga, Yuan Hao, Pankaj Attri, Takamasa Okumura, Kunihiro Kamataki, Naho Itagaki, Masaharu Shiratani, Jun-Seok Oh, Susumu Takabayashi, Tatsuyuki Nakatani. Time of Flight Size Control of Carbon Nanoparticles Using Ar+CH4 Multi-Hollow Discharge Plasma Chemical Vapor Deposition Method. Processes. 2020; 9 (1):2.

Chicago/Turabian Style

Sung Hwa Hwang; Kazunori Koga; Yuan Hao; Pankaj Attri; Takamasa Okumura; Kunihiro Kamataki; Naho Itagaki; Masaharu Shiratani; Jun-Seok Oh; Susumu Takabayashi; Tatsuyuki Nakatani. 2020. "Time of Flight Size Control of Carbon Nanoparticles Using Ar+CH4 Multi-Hollow Discharge Plasma Chemical Vapor Deposition Method." Processes 9, no. 1: 2.

Journal article
Published: 19 September 2020 in International Journal of Biological Macromolecules
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NADPH oxidases 1 (NOX1) derived reactive oxygen species (ROS) play an important role in the progression of cancer through signaling pathways. Therefore, in this paper, we demonstrate the effect of cold atmospheric plasma (CAP) on the structural changes of Noxa1 SH3 protein, one of the regulatory subunits of NOX1. For this purpose, firstly we purified the Noxa1 SH3 protein and analyzed the structure using X-ray crystallography, and subsequently, we treated the protein with two types of CAP reactors such as pulsed dielectric barrier discharge (DBD) and Soft Jet for different time intervals. The structural deformation of Noxa1 SH3 protein was analyzed by various experimental methods (circular dichroism, fluorescence, and NMR spectroscopy) and by MD simulations. Additionally, we demonstrate the effect of CAP (DBD and Soft Jet) on the viability and expression of NOX1 in A375 cancer cells. Our results are useful to understand the structural modification/oxidation occur in protein due to reactive oxygen and nitrogen (RONS) species generated by CAP.

ACS Style

Pankaj Attri; Jae-Hyun Park; Joey De Backer; Myeongkyu Kim; Ji-Hye Yun; Yunseok Heo; Sylvia Dewilde; Masaharu Shiratani; Eun Ha Choi; Weontae Lee; Annemie Bogaerts. Structural modification of NADPH oxidase activator (Noxa 1) by oxidative stress: An experimental and computational study. International Journal of Biological Macromolecules 2020, 163, 2405 -2414.

AMA Style

Pankaj Attri, Jae-Hyun Park, Joey De Backer, Myeongkyu Kim, Ji-Hye Yun, Yunseok Heo, Sylvia Dewilde, Masaharu Shiratani, Eun Ha Choi, Weontae Lee, Annemie Bogaerts. Structural modification of NADPH oxidase activator (Noxa 1) by oxidative stress: An experimental and computational study. International Journal of Biological Macromolecules. 2020; 163 ():2405-2414.

Chicago/Turabian Style

Pankaj Attri; Jae-Hyun Park; Joey De Backer; Myeongkyu Kim; Ji-Hye Yun; Yunseok Heo; Sylvia Dewilde; Masaharu Shiratani; Eun Ha Choi; Weontae Lee; Annemie Bogaerts. 2020. "Structural modification of NADPH oxidase activator (Noxa 1) by oxidative stress: An experimental and computational study." International Journal of Biological Macromolecules 163, no. : 2405-2414.

Review
Published: 10 September 2020 in Journal of Composites Science
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Nanomaterials such as carbon nanotubes (CNTs) have been used as an excellent material for catalysis, separation, adsorption and disinfection processes. CNTs have grabbed the attention of the scientific community and they have the potential to adsorb most of the organic compounds from water. Unlike, reverse osmosis (RO), nanofiltration (NF) and ultrafiltration (UF) membranes aligned CNT membranes can act as high-flow desalination membranes. CNTs provide a relatively safer electrode solution for biosensors. The article is of the utmost importance for the scientists and technologists working in water purification technologies to eliminate the water crisis in the future. The review article forms the nucleus of all CNT research in the area of water purification.

ACS Style

Bharti Arora; Pankaj Attri. Carbon Nanotubes (CNTs): A Potential Nanomaterial for Water Purification. Journal of Composites Science 2020, 4, 135 .

AMA Style

Bharti Arora, Pankaj Attri. Carbon Nanotubes (CNTs): A Potential Nanomaterial for Water Purification. Journal of Composites Science. 2020; 4 (3):135.

Chicago/Turabian Style

Bharti Arora; Pankaj Attri. 2020. "Carbon Nanotubes (CNTs): A Potential Nanomaterial for Water Purification." Journal of Composites Science 4, no. 3: 135.

Review
Published: 17 August 2020 in Processes
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In recent years, non-thermal plasma (NTP) application in agriculture is rapidly increasing. Many published articles and reviews in the literature are focus on the post-harvest use of plasma in agriculture. However, the pre-harvest application of plasma still in its early stage. Therefore, in this review, we covered the effect of NTP and plasma-treated water (PTW) on seed germination and growth enhancement. Further, we will discuss the change in biochemical analysis, e.g., the variation in phytohormones, phytochemicals, and antioxidant levels of seeds after treatment with NTP and PTW. Lastly, we will address the possibility of using plasma in the actual agriculture field and prospects of this technology.

ACS Style

Pankaj Attri; Kenji Ishikawa; Takamasa Okumura; Kazunori Koga; Masaharu Shiratani. Plasma Agriculture from Laboratory to Farm: A Review. Processes 2020, 8, 1002 .

AMA Style

Pankaj Attri, Kenji Ishikawa, Takamasa Okumura, Kazunori Koga, Masaharu Shiratani. Plasma Agriculture from Laboratory to Farm: A Review. Processes. 2020; 8 (8):1002.

Chicago/Turabian Style

Pankaj Attri; Kenji Ishikawa; Takamasa Okumura; Kazunori Koga; Masaharu Shiratani. 2020. "Plasma Agriculture from Laboratory to Farm: A Review." Processes 8, no. 8: 1002.

Journal article
Published: 24 March 2020 in International Journal of Biological Macromolecules
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Ionic liquids (ILs) are known to provide stability to biomolecules. ILs are also widely used in the fields of chemical engineering, biological engineering, chemistry, and biochemistry because they facilitate enzyme catalyzed reactions and enhance their conversion rate. In this work, we have evaluated the influence of alkyl chain substitution of ammonium ILs such as diethylammonium dihydrogen phosphate (DEAP) and triethylammonium hydrogen phosphate (TEAP) for the stability and activity of the tobacco etch virus (TEV) protease. Further, we performed molecular dynamics (MD) simulations to calculate the RMSD (root mean square deviation) for TEV and TEV + ILs. Experimental and simulations results show that TEV is more stable in the presence of TEAP than DEAP. Whereas, TEV protease activity for the cleavage of fusion proteins is preserved in the presence of DEAP while lost in the presence of TEAP. Hence, DEAP IL can serve as alternative solvents for the stability of the TEV protease with preserved activity. To the best of our knowledge, this is first study to show that ILs can stabilize and maintain the TEV protease cleavage activity.

ACS Style

Pankaj Attri; Sooho Choi; Minsup Kim; Masaharu Shiratani; Art E. Cho; Weontae Lee. Influence of alkyl chain substitution of ammonium ionic liquids on the activity and stability of tobacco etch virus protease. International Journal of Biological Macromolecules 2020, 155, 439 -446.

AMA Style

Pankaj Attri, Sooho Choi, Minsup Kim, Masaharu Shiratani, Art E. Cho, Weontae Lee. Influence of alkyl chain substitution of ammonium ionic liquids on the activity and stability of tobacco etch virus protease. International Journal of Biological Macromolecules. 2020; 155 ():439-446.

Chicago/Turabian Style

Pankaj Attri; Sooho Choi; Minsup Kim; Masaharu Shiratani; Art E. Cho; Weontae Lee. 2020. "Influence of alkyl chain substitution of ammonium ionic liquids on the activity and stability of tobacco etch virus protease." International Journal of Biological Macromolecules 155, no. : 439-446.

Journal article
Published: 05 March 2020 in Japanese Journal of Applied Physics
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Recently, cold atmospheric plasma (CAP) treatment on seed germination has emerged as a useful technique to increase agriculture production, although, the mechanism of the cold plasma in seed germination is still under investigation. In this work, we studied the role of pigments in the seed coat of radish sprouts on the electron spin resonance (ESR) signals before and after CAP treatment. Radish sprouts seeds having grey color show enhanced ESR signals after the CAP treatment, whereas, no increased ESR signals were observed for brown color seeds of radish sprouts as compared to their respective control seeds. These results reveal that seeds from the same harvest year having different seed coat colors show different responses to the plasma treatment. Although ESR signal intensity can vary with the harvest year, the change in ESR signal intensity after plasma treatment depends on the seed coat color. Independently on the harvest year (2017 and 2018), CAP increased ESR signals stronger in the grey seeds in comparison to the brown ones. The results indicated that seed coat color may be an important variable for understanding differences in the extent of CAP effects on seeds.

ACS Style

Kazunori Koga; Pankaj Attri; Kunihiro Kamataki; Naho Itagaki; Masaharu Shiratani; Vida Mildaziene. Impact of radish sprouts seeds coat color on the electron paramagnetic resonance signals after plasma treatment. Japanese Journal of Applied Physics 2020, 59, SHHF01 .

AMA Style

Kazunori Koga, Pankaj Attri, Kunihiro Kamataki, Naho Itagaki, Masaharu Shiratani, Vida Mildaziene. Impact of radish sprouts seeds coat color on the electron paramagnetic resonance signals after plasma treatment. Japanese Journal of Applied Physics. 2020; 59 (SH):SHHF01.

Chicago/Turabian Style

Kazunori Koga; Pankaj Attri; Kunihiro Kamataki; Naho Itagaki; Masaharu Shiratani; Vida Mildaziene. 2020. "Impact of radish sprouts seeds coat color on the electron paramagnetic resonance signals after plasma treatment." Japanese Journal of Applied Physics 59, no. SH: SHHF01.

Journal article
Published: 20 January 2020 in International Journal of Biological Macromolecules
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Understanding the folding and stability of membrane proteins is of great importance in protein science. Recently, osmolytes and ionic liquids (ILs) are increasingly being used as drug delivery systems in the biopharmaceutical industry. However, the stability of membrane proteins in the presence of osmolytes and ILs is not yet fully understood. Besides, the effect of oxidative stress on membrane proteins with osmolytes or ILs has not been investigated. Therefore, we studied the influence of osmolytes and ILs as co-solvents on the stability of a model membrane protein (i.e., Bacteriorhodopsin in purple membrane of Halobacterium salinarum), using UV–Vis spectroscopy and molecular dynamics (MD) simulations. The MD simulations allowed us to determine the flexibility and solvent accessible surface area (SASA) of Bacteriorhodopsin protein in the presence and/or absence of co-solvents, as well as to carry out principal component analysis (PCA) to identify the most important movements in this protein. In addition, by means of UV–Vis spectroscopy we studied the effect of oxidative stress generated by cold atmospheric plasma on the stability of Bacteriorhodopsin in the presence and/or absence of co-solvents. This study is important for a better understanding of the stability of proteins in the presence of oxidative stress.

ACS Style

Pankaj Attri; Jamoliddin Razzokov; Maksudbek Yusupov; Kazunori Koga; Masaharu Shiratani; Annemie Bogaerts. Influence of osmolytes and ionic liquids on the Bacteriorhodopsin structure in the absence and presence of oxidative stress: A combined experimental and computational study. International Journal of Biological Macromolecules 2020, 148, 657 -665.

AMA Style

Pankaj Attri, Jamoliddin Razzokov, Maksudbek Yusupov, Kazunori Koga, Masaharu Shiratani, Annemie Bogaerts. Influence of osmolytes and ionic liquids on the Bacteriorhodopsin structure in the absence and presence of oxidative stress: A combined experimental and computational study. International Journal of Biological Macromolecules. 2020; 148 ():657-665.

Chicago/Turabian Style

Pankaj Attri; Jamoliddin Razzokov; Maksudbek Yusupov; Kazunori Koga; Masaharu Shiratani; Annemie Bogaerts. 2020. "Influence of osmolytes and ionic liquids on the Bacteriorhodopsin structure in the absence and presence of oxidative stress: A combined experimental and computational study." International Journal of Biological Macromolecules 148, no. : 657-665.

Journal article
Published: 25 June 2019 in Anti-Cancer Agents in Medicinal Chemistry
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ACS Style

Pankaj Attri. Perspectives of Plasma-treated Solutions as Anticancer Drugs. Anti-Cancer Agents in Medicinal Chemistry 2019, 19, 436 -438.

AMA Style

Pankaj Attri. Perspectives of Plasma-treated Solutions as Anticancer Drugs. Anti-Cancer Agents in Medicinal Chemistry. 2019; 19 (4):436-438.

Chicago/Turabian Style

Pankaj Attri. 2019. "Perspectives of Plasma-treated Solutions as Anticancer Drugs." Anti-Cancer Agents in Medicinal Chemistry 19, no. 4: 436-438.

Journal article
Published: 04 March 2019 in Applied Physics Letters
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ACS Style

Bhagirath Ghimire; Endre J. Szili; Pradeep Lamichhane; Robert D. Short; Jun Sup Lim; Pankaj Attri; Kai Masur; Klaus-Dieter Weltmann; Sung-Ha Hong; Eun Ha Choi. The role of UV photolysis and molecular transport in the generation of reactive species in a tissue model with a cold atmospheric pressure plasma jet. Applied Physics Letters 2019, 114, 093701 .

AMA Style

Bhagirath Ghimire, Endre J. Szili, Pradeep Lamichhane, Robert D. Short, Jun Sup Lim, Pankaj Attri, Kai Masur, Klaus-Dieter Weltmann, Sung-Ha Hong, Eun Ha Choi. The role of UV photolysis and molecular transport in the generation of reactive species in a tissue model with a cold atmospheric pressure plasma jet. Applied Physics Letters. 2019; 114 (9):093701.

Chicago/Turabian Style

Bhagirath Ghimire; Endre J. Szili; Pradeep Lamichhane; Robert D. Short; Jun Sup Lim; Pankaj Attri; Kai Masur; Klaus-Dieter Weltmann; Sung-Ha Hong; Eun Ha Choi. 2019. "The role of UV photolysis and molecular transport in the generation of reactive species in a tissue model with a cold atmospheric pressure plasma jet." Applied Physics Letters 114, no. 9: 093701.

Journal article
Published: 12 November 2018 in Anti-Cancer Agents in Medicinal Chemistry
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Objective: The aim of the paper is to investigate the optimum condition for generation of Plasma Activated Media (PAM), where it can deactivate the cancer cells while minimum damage for normal cells. Background: Over past few years, cold atmospheric Plasma-Activated Media (PAM) have shown its promising application in plasma medicine for treatment of cancer. PAM has a tremendous ability for selective anti-cancer capacity in vitro and in vivo. Methods: We have analyzed the radicals in air using the optical emission spectroscopy and in culture media using chemical analysis. Further, we have tested the toxicity of PAM using MTT assay. Results: We observed that more cancer cell death is for the Ar plasma followed by the Ar-N2 plasma, and the least cell death was observed for the Ar-O2 plasma at all treatment times both by direct treatment and through PAM treatment. The concentration of the RNS species is high for Ar-N2 plasma in gas as well as inside the culture media compared to that for pure Ar plasma. However, the difference is significantly less between the Ar plasma treatments and the Ar-N2 plasma treatments, showing that ROS is the main factor contributing to cell death. Conclusion: Among all three feeding gas plasmas the best system is Ar-O2 plasma for direct treatments towards the cancer cells. In addition, the best system for PAM preparation is Ar-N2 at low time treatments (1 min and 2 min) because it has no effect on normal cells, but kills the cancer cells.

ACS Style

Pankaj Attri; Ji Hoon Park; Anser Ali; Eun Ha Choi. How Does Plasma Activated Media Treatment Differ From Direct Cold Plasma Treatment? Anti-Cancer Agents in Medicinal Chemistry 2018, 18, 805 -814.

AMA Style

Pankaj Attri, Ji Hoon Park, Anser Ali, Eun Ha Choi. How Does Plasma Activated Media Treatment Differ From Direct Cold Plasma Treatment? Anti-Cancer Agents in Medicinal Chemistry. 2018; 18 (6):805-814.

Chicago/Turabian Style

Pankaj Attri; Ji Hoon Park; Anser Ali; Eun Ha Choi. 2018. "How Does Plasma Activated Media Treatment Differ From Direct Cold Plasma Treatment?" Anti-Cancer Agents in Medicinal Chemistry 18, no. 6: 805-814.

Journal article
Published: 12 November 2018 in Anti-Cancer Agents in Medicinal Chemistry
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ACS Style

Pankaj Attri. Cold Atmospheric Plasma Activated Solution: A New Approach for Cancer Treatment. Anti-Cancer Agents in Medicinal Chemistry 2018, 18, 768 -768.

AMA Style

Pankaj Attri. Cold Atmospheric Plasma Activated Solution: A New Approach for Cancer Treatment. Anti-Cancer Agents in Medicinal Chemistry. 2018; 18 (6):768-768.

Chicago/Turabian Style

Pankaj Attri. 2018. "Cold Atmospheric Plasma Activated Solution: A New Approach for Cancer Treatment." Anti-Cancer Agents in Medicinal Chemistry 18, no. 6: 768-768.

Journal article
Published: 26 July 2018 in Scientific Reports
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There is a growing body of literature that recognizes the importance of plasma treated water (PTW) for inactivation of microorganism. However, very little attention has been paid to the role of reactive nitrogen species (RNS) in deactivation of bacteria. The aim of this study is to explore the role of RNS in bacterial killing, and to develop a plasma system with increased sterilization efficiency. To increase the concentration of reactive oxygen and nitrogen species (RONS) in solution, we have used vapor systems (DI water/HNO3 at different wt%) combined with plasma using N2 as working gas. The results show that the addition of the vapor system yields higher RONS contents. Furthermore, PTW produced by N2 + 0.5 wt% HNO3 vapor comprises a large amount of both RNS and ROS, while PTW created by N2 + H2O vapor consists of a large amount of ROS, but much less RNS. Interestingly, we observed more deactivation of E. Coli with PTW created by N2 + 0.5 wt% HNO3 vapor plasma as compared to PTW generated by the other plasma systems. This work provides new insight into the role of RNS along with ROS for deactivation of bacteria.

ACS Style

Priyanka Shaw; Naresh Kumar; Hyong Sin Kwak; Ji Hoon Park; Han Sup Uhm; Annemie Bogaerts; Eun Ha Choi; Pankaj Attri. Bacterial inactivation by plasma treated water enhanced by reactive nitrogen species. Scientific Reports 2018, 8, 1 -10.

AMA Style

Priyanka Shaw, Naresh Kumar, Hyong Sin Kwak, Ji Hoon Park, Han Sup Uhm, Annemie Bogaerts, Eun Ha Choi, Pankaj Attri. Bacterial inactivation by plasma treated water enhanced by reactive nitrogen species. Scientific Reports. 2018; 8 (1):1-10.

Chicago/Turabian Style

Priyanka Shaw; Naresh Kumar; Hyong Sin Kwak; Ji Hoon Park; Han Sup Uhm; Annemie Bogaerts; Eun Ha Choi; Pankaj Attri. 2018. "Bacterial inactivation by plasma treated water enhanced by reactive nitrogen species." Scientific Reports 8, no. 1: 1-10.

Journal article
Published: 05 July 2018 in Scientific Reports
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Cold atmospheric plasma (CAP) has great potential for sterilization in the food industry, by deactivation of thermophilic bacteria, but the underlying mechanisms are largely unknown. Therefore, we investigate here whether CAP is able to denature/modify protein from thermophilic bacteria. We focus on MTH1880 (MTH) from Methanobacterium thermoautotrophicum as model protein, which we treated with dielectric barrier discharge (DBD) plasma operating in air for 10, 15 and 20 mins. We analysed the structural changes of MTH using circular dichroism, fluorescence and NMR spectroscopy, as well as the thermal and chemical denaturation, upon CAP treatment. Additionally, we performed molecular dynamics (MD) simulations to determine the stability, flexibility and solvent accessible surface area (SASA) of both the native and oxidised protein.

ACS Style

Pankaj Attri; Jeongmin Han; Sooho Choi; Eun Ha Choi; Annemie Bogaerts; Weontae Lee. CAP modifies the structure of a model protein from thermophilic bacteria: mechanisms of CAP-mediated inactivation. Scientific Reports 2018, 8, 1 -10.

AMA Style

Pankaj Attri, Jeongmin Han, Sooho Choi, Eun Ha Choi, Annemie Bogaerts, Weontae Lee. CAP modifies the structure of a model protein from thermophilic bacteria: mechanisms of CAP-mediated inactivation. Scientific Reports. 2018; 8 (1):1-10.

Chicago/Turabian Style

Pankaj Attri; Jeongmin Han; Sooho Choi; Eun Ha Choi; Annemie Bogaerts; Weontae Lee. 2018. "CAP modifies the structure of a model protein from thermophilic bacteria: mechanisms of CAP-mediated inactivation." Scientific Reports 8, no. 1: 1-10.