101
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Liu Y, Zhou M, Cao W, Wang X, Wang Q, Li S, Wei H. Light-Responsive Metal–Organic Framework as an Oxidase Mimic for Cellular Glutathione Detection. Anal Chem 2019; 91:8170-8175. [DOI: 10.1021/acs.analchem.9b00512] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yufeng Liu
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Min Zhou
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Wen Cao
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Xiaoyu Wang
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Quan Wang
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Sirong Li
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Hui Wei
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210093, China
- State Key Laboratory of Analytical Chemistry for Life Science and State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
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102
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Şenel B, Demir N, Büyükköroğlu G, Yıldız M. Graphene quantum dots: Synthesis, characterization, cell viability, genotoxicity for biomedical applications. Saudi Pharm J 2019; 27:846-858. [PMID: 31516327 PMCID: PMC6733895 DOI: 10.1016/j.jsps.2019.05.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 05/20/2019] [Indexed: 12/21/2022] Open
Abstract
We report the synthesis and applications of a novel N-doped graphene quantum dots (GQDs) using hydrothermal reaction between citric acid and p-aminophenol. The synthesized N-doped GQDs have been characterized physico-chemically and evaluated its antioxidant, antimicrobial, DNA binding and cleavage activities. siRNA loading studies were performed and their effects on cells were evaluated. Obtained results indicate that monodisperse solution of N-doped GQDs has been obtained with particles size ca. ∼10.9 ± 1.3 nm. UV–Vis spectroscopy studies of the interactions between the N-doped GQDs and calf thymus DNA (CT-DNA) showed that the compound interact with CT-DNA via both intercalative and electrostatic binding. The DNA cleavage study showed that the N-doped GQDs cleaved DNA without any external agents. The antioxidant activity of N-doped GQDS was very active when compared to BHT. As the concentration of the compound increased, the antioxidant activity also increased. Cell viability assay demonstrated that the Ndoped GQDs showed cell viability (70%) when the concentration reached 200 μg/mL for A549 and also MDA-MB-231, 150 μg/mL for NIH-3T3 cell lines at 24 h incubation. N-doped GQDs were coated with Eudragit RS 100 and EphA2-siRNA was loaded. As a result of the studies on these formulations, it was concluded that there may be significant effects on A549 cells. The microscopy results revealed that N-doped GQDs was quickly internalized into the cell. Our novel N-doped-GQDs with siRNA are candidate for in situ tumor suppression via DNA and mRNA breakage.
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Affiliation(s)
- Behiye Şenel
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Anadolu University, TR-26470 Tepebaşı-Eskişehir, Turkey
| | - Neslihan Demir
- Department of Biology, Faculty of Arts and Sciences, Çanakkale Onsekiz Mart University, 17100 Çanakkale, Turkey
| | - Gülay Büyükköroğlu
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Anadolu University, TR-26470 Tepebaşı-Eskişehir, Turkey
| | - Mustafa Yıldız
- Department of Chemistry, Faculty of Arts and Sciences, Çanakkale Onsekiz Mart University, 17100 Çanakkale, Turkey.,Nanoscience and Technology Research and Application Center (NANORAC), Faculty of Arts and Sciences, Çanakkale Onsekiz Mart University, 17100 Çanakkale, Turkey
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103
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Nilewski L, Mendoza K, Jalilov AS, Berka V, Wu G, Sikkema WKA, Metzger A, Ye R, Zhang R, Luong DX, Wang T, McHugh E, Derry PJ, Samuel EL, Kent TA, Tsai AL, Tour JM. Highly Oxidized Graphene Quantum Dots from Coal as Efficient Antioxidants. ACS APPLIED MATERIALS & INTERFACES 2019; 11:16815-16821. [PMID: 30995006 DOI: 10.1021/acsami.9b01082] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Graphene quantum dots (GQDs) have recently been employed in various fields including medicine as antioxidants, primarily because of favorable biocompatibility in comparison to common inorganic quantum dots, although the structural features that lead to the biological activities of GQDs are poorly understood. Here, we report that coal-derived GQDs and their poly(ethylene glycol)-functionalized derivatives serve as efficient antioxidants, and we evaluate their electrochemical, chemical, and in vitro biological activities.
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Affiliation(s)
| | - Kimberly Mendoza
- Department of Neurology , Baylor College of Medicine , Houston , Texas 77030 , United States
| | | | - Vladimir Berka
- Hematology, Internal Medicine . University of Texas McGovern Medical School-Houston , Houston , Texas 77030 , United States
| | - Gang Wu
- Hematology, Internal Medicine . University of Texas McGovern Medical School-Houston , Houston , Texas 77030 , United States
| | | | | | | | | | | | | | | | - Paul J Derry
- Institute of Biosciences and Technology , Texas A&M Health Science Center , Houston , Texas 77030 , United States
| | - Errol Loïc Samuel
- Department of Neurology , Baylor College of Medicine , Houston , Texas 77030 , United States
| | - Thomas A Kent
- Institute of Biosciences and Technology , Texas A&M Health Science Center , Houston , Texas 77030 , United States
- Stanley H. Appel Department of Neurology and Research Institute , Houston Methodist Hospital , Houston , Texas 77030 , United States
| | - Ah-Lim Tsai
- Hematology, Internal Medicine . University of Texas McGovern Medical School-Houston , Houston , Texas 77030 , United States
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104
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Marković ZM, Kováčová M, Humpolíček P, Budimir MD, Vajďák J, Kubát P, Mičušík M, Švajdlenková H, Danko M, Capáková Z, Lehocký M, Todorović Marković BM, Špitalský Z. Antibacterial photodynamic activity of carbon quantum dots/polydimethylsiloxane nanocomposites against Staphylococcus aureus, Escherichia coli and Klebsiella pneumoniae. Photodiagnosis Photodyn Ther 2019; 26:342-349. [PMID: 31022579 DOI: 10.1016/j.pdpdt.2019.04.019] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 04/04/2019] [Accepted: 04/19/2019] [Indexed: 11/26/2022]
Abstract
Despite great efforts, the design of antibacterial surfaces is still a challenge. In this work, results of structural, mechanical, cytotoxic and antibacterial activities of hydrophobic carbon quantum dots/polydimethylsiloxane surfaces are presented. Antibacterial action of this surface is based on the generation of reactive oxygen species which cause bacteria damage by oxidative stress. At the same time, this surface was not cytotoxic towards the NIH/3T3 cells. Swelling-encapsulation-shrink method is applied for encapsulation of hydrophobic carbon quantum dots in medical grade silicone-polydimethylsiloxane. XPS and photoluminescence spectroscopy analyses confirm that hydrophobic carbon quantum dots have been encapsulated successfully into polydimethylsiloxane polymer matrix. Based on stress-strain test the improvement of mechanical properties of these nanocomposites is established. It is shown by electron paramagnetic resonance spectroscopy and luminescence method that nanocomposite generates singlet oxygen initiated by 470 nm blue light irradiation. Antibacterial testing shows the nanocomposite in the form of foil kills Staphylococcus aureus, Escherichia coli and Klebsiella pneumoniae and is very effective after only a 15 min irradiation.
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Affiliation(s)
- Zoran M Marković
- Vinča Institute of Nuclear Sciences, University of Belgrade, P.O.B. 522, 11001 Belgrade, Serbia.
| | - Mária Kováčová
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 84541 Bratislava, Slovakia
| | - Petr Humpolíček
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati 5678, Zlín, Czech Republic
| | - Milica D Budimir
- Vinča Institute of Nuclear Sciences, University of Belgrade, P.O.B. 522, 11001 Belgrade, Serbia
| | - Jan Vajďák
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati 5678, Zlín, Czech Republic
| | - Pavel Kubát
- J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejškova 3, 182 23 Praha 8, Czech Republic
| | - Matej Mičušík
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 84541 Bratislava, Slovakia
| | - Helena Švajdlenková
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 84541 Bratislava, Slovakia
| | - Martin Danko
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 84541 Bratislava, Slovakia
| | - Zdenka Capáková
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati 5678, Zlín, Czech Republic
| | - Marián Lehocký
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati 5678, Zlín, Czech Republic
| | | | - Zdeno Špitalský
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 84541 Bratislava, Slovakia.
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105
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Zhao F, Gu W, Zhou J, Liu Q, Chong Y. Solar-excited graphene quantum dots for bacterial inactivation via generation of reactive oxygen species. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, ENVIRONMENTAL CARCINOGENESIS & ECOTOXICOLOGY REVIEWS 2019; 37:67-80. [PMID: 30983511 DOI: 10.1080/10590501.2019.1591701] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nanoscale photocatalysts have attracted abundant research attention in the solar-activated disinfection. In this work, we find that solar irradiation significantly improves the antimicrobial activity of graphene quantum dots (GQDs), accompanied by severe oxidative stress and membrane damage. By using electron spin resonance (ESR) technique, we confirm that different reactive oxygen species (ROS), including singlet oxygen (1O2), hydroxyl radical (•OH), and superoxide anion (O2•-) were generated by GQDs upon irradiation with simulated sunlight. Additionally, these generated ROS will further facilitate lipid peroxidation of cell membrane and suppress bacterial antioxidant systems, enhancing the phototoxicity of GQDs. These findings will bring major advancements of GQDs in applications of solar-driven bacterial disinfection.
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Affiliation(s)
- Fangdong Zhao
- a State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection , Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University , Suzhou , China
| | - Wei Gu
- a State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection , Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University , Suzhou , China
| | - Jian Zhou
- a State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection , Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University , Suzhou , China
| | - Qiang Liu
- a State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection , Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University , Suzhou , China
| | - Yu Chong
- a State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection , Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University , Suzhou , China
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106
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Zhang Y, Yang C, Yang D, Shao Z, Hu Y, Chen J, Yuwen L, Weng L, Luo Z, Wang L. Reduction of graphene oxide quantum dots to enhance the yield of reactive oxygen species for photodynamic therapy. Phys Chem Chem Phys 2019; 20:17262-17267. [PMID: 29901057 DOI: 10.1039/c8cp01990h] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The production of reactive oxygen species (ROS) from graphene oxide quantum dots (GOQDs) and chemically reduced GOQDs (rGOQDs) was studied. This shows that GOQDs and rGOQDs produce ROS including singlet oxygen (1O2), hydrogen peroxide (H2O2) and superoxide anion (O2˙-). Interestingly, the rGOQDs exhibit a higher yield of ROS under white light in comparison with GOQDs, indicating the enhanced photodynamic effect through chemical reduction of GOQDs. Studies on the relation between their structures and the yield of ROS demonstrate that the reduction of GOQDs with hydrazine hydrate decreases the band gap and valence band of GOQDs and results in more electron-hole pairs, which leads to an improvement in the yield of ROS from rGOQDs. This research explores the specific species of ROS generated from GOQDs, and provides an efficient avenue to improve the yield of ROS through surface modification of GOQDs.
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Affiliation(s)
- Ying Zhang
- Key Laboratory for Organic Electronics and Information Display (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
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107
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Lin B, Chen H, Liang D, Lin W, Qi X, Liu H, Deng X. Acidic pH and High-H 2O 2 Dual Tumor Microenvironment-Responsive Nanocatalytic Graphene Oxide for Cancer Selective Therapy and Recognition. ACS APPLIED MATERIALS & INTERFACES 2019; 11:11157-11166. [PMID: 30869853 DOI: 10.1021/acsami.8b22487] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
It is well known that tumors have an acidic pH microenvironment and contain a high content of hydrogen peroxide (H2O2). These features of the tumor microenvironment may provide physiochemical conditions that are suitable for selective tumor therapy and recognition. Here, for the first time, we demonstrate that a type of graphene oxide nanoparticle (N-GO) can exhibit peroxidase-like activities (i.e., can increase the levels of reactive oxygen species (ROS)) under acidic conditions and catalyze the conversion of H2O2 to ROS-hydroxyl radicals (HO·) in the acidic microenvironment in Hela tumors. The concentrated and highly toxic HO· can then trigger necrosis of tumor cells. In the microenvironment of normal tissues, which has a neutral pH and low levels of H2O2, N-GOs exhibit catalase-like activity (scavenge ROS) that splits H2O2 into O2 and water (H2O), leaving normal cells unharmed. In the recognition of tumors, an inherent redox characteristic of dopamine is that it oxidizes to form dopamine-quinine under neutral (pH 7.4) conditions, quenching the fluorescence of N-GOs; however, this characteristic has no effect on the fluorescence of N-GOs in an acidic (pH 6.0) medium. This pH-controlled response provides an active targeting strategy for the diagnostic recognition of tumor cells. Our current work demonstrates that nanocatalytic N-GOs in an acidic and high-H2O2 tumor microenvironment can provide novel benefits that can reduce drug resistance, minimize side effects on normal tissues, improve antitumor efficacy, and offer good biocompatibility for tumor selective therapeutics and specific recognition.
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Affiliation(s)
- Baoping Lin
- MOE Key Laboratory of Laser Life Science, College of Biophotonics , South China Normal University , Guangzhou 510631 , Guangdong , China
| | - Heting Chen
- MOE Key Laboratory of Laser Life Science, College of Biophotonics , South China Normal University , Guangzhou 510631 , Guangdong , China
| | - Danyang Liang
- MOE Key Laboratory of Laser Life Science, College of Biophotonics , South China Normal University , Guangzhou 510631 , Guangdong , China
| | - Wei Lin
- MOE Key Laboratory of Laser Life Science, College of Biophotonics , South China Normal University , Guangzhou 510631 , Guangdong , China
| | - Xiaoyang Qi
- MOE Key Laboratory of Laser Life Science, College of Biophotonics , South China Normal University , Guangzhou 510631 , Guangdong , China
| | - Hanping Liu
- MOE Key Laboratory of Laser Life Science, College of Biophotonics , South China Normal University , Guangzhou 510631 , Guangdong , China
| | - Xiaoyuan Deng
- MOE Key Laboratory of Laser Life Science, College of Biophotonics , South China Normal University , Guangzhou 510631 , Guangdong , China
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108
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Deng S, Fu A, Junaid M, Wang Y, Yin Q, Fu C, Liu L, Su DS, Bian WP, Pei DS. Nitrogen-doped graphene quantum dots (N-GQDs) perturb redox-sensitive system via the selective inhibition of antioxidant enzyme activities in zebrafish. Biomaterials 2019; 206:61-72. [PMID: 30925289 DOI: 10.1016/j.biomaterials.2019.03.028] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 03/03/2019] [Accepted: 03/19/2019] [Indexed: 01/02/2023]
Abstract
Graphene quantum dots (GQDs) are well-known for its potential applications for bioimaging, biosensor, and drug carrier in biomedicine. GQDs are well characteristic of intrinsic peroxidase-like catalytic activity, which is proven effective in scavenging the free radicals, such assuperoxide anion, hydrogen peroxide, and hydroxyl radical. GQDs are also well praised for its low in vivo and in vitro toxicity. Here, we found that nitrogen-doped GQDs (N-GQDs) can strongly disturb redox-sensitive system via the selective inhibition of endogenous antioxidant enzyme activities in zebrafish. The enzyme activities or transcription levels of a battery of hemoproteins including catalase (CAT), superoxide dismutase (SOD), respiratory chain complex I, complex Ⅲ, hemoglobin (Hb), and myeloperoxidase (MPO), were significantly suppressed by N-GQDs. We also found that N-GQDs activated the cytochrome P450 monooxygenase (e.g. cyp1a) and the associated aryl-hydrocarbon receptor repressors (ahrr1 and ahrr2) in zebrafish embryos. Compared to the ultrasmall graphene oxide (USGO), N-GQDs exhibited stronger fluorescent permeability and tissue-specific bio-accumulative effects. Taken together, our findings highlighted that exposure to N-GQDs can disrupt endogenous antioxidant enzyme activities, possibly via the competitive inhibition of electron transfer process. Our results in this study provided solid data for biosafety evaluations of various types of GQDs, and created an alert for the future biomedical applications of N-GQDs.
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Affiliation(s)
- Shun Deng
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Ailing Fu
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Muhammad Junaid
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yan Wang
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qian Yin
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Chen Fu
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Li Liu
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dong-Sheng Su
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Wan-Ping Bian
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - De-Sheng Pei
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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109
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Zeng L, Li X, Fan S, Li J, Mu J, Qin M, Wang L, Gan G, Tadé M, Liu S. The bioelectrochemical synthesis of high-quality carbon dots with strengthened electricity output and excellent catalytic performance. NANOSCALE 2019; 11:4428-4437. [PMID: 30801606 DOI: 10.1039/c8nr10510c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The emergence of microbial fuel cell (MFC) technology that can effectively recycle renewable energy from organic pollutants has been regarded as a promising and environmentally friendly route that could be widely used in numerous fields. Here, a novel sustainable self-energy conversion system was successfully constructed to renewably synthesize carbon dots (CDs) via in situ coupling with a MFC system. Interestingly, the generation of CDs was found to largely enhance the electricity production performance of the MFC. Low-temperature electron paramagnetic resonance (EPR) spectroscopic measurements and electrochemical characterization analysis results confirmed that the as-prepared CDs exhibited wide-conversion fluorescence properties and exposed carbon-rich active oxygen sites, and demonstrated a suitable band gap as well as excellent electrocatalytic performance. As a result, the prepared CDs possess high photo-bioelectrocatalytic activity for efficient H2 production, reaching 9.58 μmol h-1. Remarkably, CD-derived photocatalytic ink presented excellent contaminant elimination activity at the solid-solid interface. Thus, this work will provide a new platform for catalyst construction via a bio-assisted method towards the next generation of nano-photocatalytic inks for indoor contaminant removal.
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Affiliation(s)
- Libin Zeng
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
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110
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Wu J, Wang X, Wang Q, Lou Z, Li S, Zhu Y, Qin L, Wei H. Nanomaterials with enzyme-like characteristics (nanozymes): next-generation artificial enzymes (II). Chem Soc Rev 2019; 48:1004-1076. [DOI: 10.1039/c8cs00457a] [Citation(s) in RCA: 1628] [Impact Index Per Article: 325.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An updated comprehensive review to help researchers understand nanozymes better and in turn to advance the field.
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Affiliation(s)
- Jiangjiexing Wu
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
| | - Xiaoyu Wang
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
| | - Quan Wang
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
| | - Zhangping Lou
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
| | - Sirong Li
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
| | - Yunyao Zhu
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
| | - Li Qin
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
| | - Hui Wei
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
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111
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Budimir M, Marković Z, Jovanović D, Vujisić M, Mičušík M, Danko M, Kleinová A, Švajdlenková H, Špitalský Z, Marković BT. Gamma ray assisted modification of carbon quantum dot/polyurethane nanocomposites: structural, mechanical and photocatalytic study. RSC Adv 2019; 9:6278-6286. [PMID: 35517258 PMCID: PMC9060942 DOI: 10.1039/c9ra00500e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 02/17/2020] [Accepted: 02/15/2019] [Indexed: 11/25/2022] Open
Abstract
In recent years, water pollution and contamination had become a major threat to the ecosystem. However, the use of nanostructured materials has been proven as a very promising approach in the treatment of polluted water. The present study reports the results of the gamma ray-assisted modification of hydrophobic carbon quantum dot (hCQD)/polyurethane nanocomposites for photocatalytic degradation of organic dyes. Different characterization methods were applied to investigate the influence of the different doses of gamma irradiation (1, 10 and 200 kGy) on the physical and chemical properties of nanocomposites (morphology, chemical content, mechanical properties, wettability, and potential for singlet oxygen generation). Surface morphology and mechanical properties analyses showed that gamma rays induced insignificant changes in the structure of nanocomposites, but the potential for singlet oxygen generation increased significantly. Here we also explore, in detail, the photocatalytic properties of gamma-ray modified hCQDs/polyurethane nanocomposites. UV-vis analysis showed that the removal efficiency of the rose bengal dye reached up to 97% for the nanocomposite irradiated with the dose of 200 kGy. The present study reports the results of the gamma ray-assisted modification of hydrophobic carbon quantum dots (hCQDs)/polyurethane nanocomposites for photocatalytic degradation of organic dyes.![]()
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Affiliation(s)
- Milica Budimir
- Vinča Institute of Nuclear Sciences
- University of Belgrade
- 11001 Belgrade
- Serbia
- School of Electrical Engineering
| | - Zoran Marković
- Vinča Institute of Nuclear Sciences
- University of Belgrade
- 11001 Belgrade
- Serbia
| | - Dragana Jovanović
- Vinča Institute of Nuclear Sciences
- University of Belgrade
- 11001 Belgrade
- Serbia
| | - Miloš Vujisić
- School of Electrical Engineering
- University of Belgrade
- 11000 Belgrade
- Serbia
| | - Matej Mičušík
- Polymer Institute
- Slovak Academy of Sciences
- 84541 Bratislava
- Slovakia
| | - Martin Danko
- Polymer Institute
- Slovak Academy of Sciences
- 84541 Bratislava
- Slovakia
| | - Angela Kleinová
- Polymer Institute
- Slovak Academy of Sciences
- 84541 Bratislava
- Slovakia
| | | | - Zdeno Špitalský
- Polymer Institute
- Slovak Academy of Sciences
- 84541 Bratislava
- Slovakia
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112
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Wang Y, Kong W, Wang L, Zhang JZ, Li Y, Liu X, Li Y. Optimizing oxygen functional groups in graphene quantum dots for improved antioxidant mechanism. Phys Chem Chem Phys 2018; 21:1336-1343. [PMID: 30574959 DOI: 10.1039/c8cp06768f] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The development of new antioxidants with quick absorbance of free radicals and excellent biocompatibility has drawn intensive attention in recent years. Graphene quantum dots (GQDs) seemed to be one of the most promising antioxidants because of their appropriate antioxidant activity, unique structure, excellent biocompatibility, and low toxicity. However, the relatively low antioxidant activity in comparison with inorganic semiconductor materials and unclear antioxidant mechanism limited their application in cells. In this paper, we further explored their antioxidant mechanism by focusing on the relationship between antioxidant activity and surface oxygen functional groups. The total oxygen fraction was controlled by post-preparation reduction using NaBH4 and the type of oxygen functional groups was adjusted by free radicals during the preparation of GQDs. The degree of reduction and content of surface oxygen groups were determined by X-ray photoelectron spectroscopy (XPS), and the antioxidant activity was obtained by scavenging of 1,1-diphenyl-2-picryl-hydrazyl (DPPH˙) and hydroxyl (˙OH) free radicals. Based on the analysis of XPS, Raman, and Fourier-transform infrared (FT-IR) spectra, the relationship between antioxidant activity and the surface oxygen groups of GQDs was obtained, and the antioxidant mechanism of GQDs was revealed with a particular specification of each oxygen group in the antioxidant activity of GQDs, meanwhile, the biocompatibility of GQDs has been demonstrated by cytotoxicity tests. We hope that our results will provide a new insight into a complete antioxidant mechanism of GQDs.
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Affiliation(s)
- Yingmin Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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113
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Tosic J, Stanojevic Z, Vidicevic S, Isakovic A, Ciric D, Martinovic T, Kravic-Stevovic T, Bumbasirevic V, Paunovic V, Jovanovic S, Todorovic-Markovic B, Markovic Z, Danko M, Micusik M, Spitalsky Z, Trajkovic V. Graphene quantum dots inhibit T cell-mediated neuroinflammation in rats. Neuropharmacology 2018; 146:95-108. [PMID: 30471296 DOI: 10.1016/j.neuropharm.2018.11.030] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 11/15/2018] [Accepted: 11/20/2018] [Indexed: 12/13/2022]
Abstract
We investigated the therapeutic capacity of nano-sized graphene sheets, called graphene quantum dots (GQD), in experimental autoimmune encephalomyelitis (EAE), an animal model of immune-mediated central nervous system (CNS) damage. Intraperitoneally administered GQD (10 mg/kg/day) accumulated in the lymph node and CNS cells of Dark Agouti rats in which EAE was induced by immunization with spinal cord homogenate in complete Freund's adjuvant. GQD significantly reduced clinical signs of EAE when applied throughout the course of the disease (day 0-32), while the protection was less pronounced if the treatment was limited to the induction (day 0-7 post-immunization) or effector (from day 8 onwards) phase of the disease. GQD treatment diminished immune infiltration, demyelination, axonal damage, and apoptotic death in the CNS of EAE animals. GQD also reduced the numbers of interferon-γ-expressing T helper (Th)1 cells, as well as the expression of Th1 transcription factor T-bet and proinflammatory cytokines tumor necrosis factor, interleukin-1, and granulocyte-macrophage colony-stimulating factor in the lymph nodes and CNS immune infitrates. The protective effect of GQD in EAE was associated with the activation of p38 and p42/44 mitogen-activated protein kinases (MAPK) and Akt in the lymph nodes and/or CNS. Finally, GQD protected oligodendrocytes and neurons from T cell-mediated damage in the in vitro conditions. Collectively, these data demonstrate the ability of GQD to gain access to both immune and CNS cells during neuroinflammation, and to alleviate immune-mediated CNS damage by modulating MAPK/Akt signaling and encephalitogenic Th1 immune response.
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Affiliation(s)
- Jelena Tosic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Pasterova 2, 11000, Belgrade, Serbia
| | - Zeljka Stanojevic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Pasterova 2, 11000, Belgrade, Serbia
| | - Sasenka Vidicevic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Pasterova 2, 11000, Belgrade, Serbia
| | - Aleksandra Isakovic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Pasterova 2, 11000, Belgrade, Serbia
| | - Darko Ciric
- Institute of Histology and Embryology, School of Medicine, University of Belgrade, Visegradska 26, 11000, Belgrade, Serbia
| | - Tamara Martinovic
- Institute of Histology and Embryology, School of Medicine, University of Belgrade, Visegradska 26, 11000, Belgrade, Serbia
| | - Tamara Kravic-Stevovic
- Institute of Histology and Embryology, School of Medicine, University of Belgrade, Visegradska 26, 11000, Belgrade, Serbia
| | - Vladimir Bumbasirevic
- Institute of Histology and Embryology, School of Medicine, University of Belgrade, Visegradska 26, 11000, Belgrade, Serbia
| | - Verica Paunovic
- Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Dr Subotica 1, 11000, Belgrade, Serbia
| | - Svetlana Jovanovic
- Vinca Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11000, Belgrade, Serbia
| | | | - Zoran Markovic
- Polymer Institute, Slovak Academy of Sciences, Dubravska Cesta 9, 84541, Bratislava, Slovakia
| | - Martin Danko
- Polymer Institute, Slovak Academy of Sciences, Dubravska Cesta 9, 84541, Bratislava, Slovakia
| | - Matej Micusik
- Polymer Institute, Slovak Academy of Sciences, Dubravska Cesta 9, 84541, Bratislava, Slovakia
| | - Zdenko Spitalsky
- Polymer Institute, Slovak Academy of Sciences, Dubravska Cesta 9, 84541, Bratislava, Slovakia
| | - Vladimir Trajkovic
- Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Dr Subotica 1, 11000, Belgrade, Serbia.
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114
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Tufa LT, Oh S, Tran VT, Kim J, Jeong KJ, Park TJ, Kim HJ, Lee J. Electrochemical immunosensor using nanotriplex of graphene quantum dots, Fe3O4, and Ag nanoparticles for tuberculosis. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.09.108] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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115
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Kováčová M, Marković ZM, Humpolíček P, Mičušík M, Švajdlenková H, Kleinová A, Danko M, Kubát P, Vajďák J, Capáková Z, Lehocký M, Münster L, Todorović Marković BM, Špitalský Z. Carbon Quantum Dots Modified Polyurethane Nanocomposite as Effective Photocatalytic and Antibacterial Agents. ACS Biomater Sci Eng 2018; 4:3983-3993. [PMID: 33418799 DOI: 10.1021/acsbiomaterials.8b00582] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Development of new types of antibacterial coatings or nanocomposites is of great importance due to widespread multidrug-resistant infections including bacterial infections. Herein, we investigated biocompatibility as well as structural, photocatalytic, and antibacterial properties of photoactive hydrophobic carbon quantum dots/polyurethane nanocomposite. The swell-encapsulation-shrink method was applied for production of these nanocomposites. Hydrophobic carbon quantum dots/polyurethane nanocomposites were found to be highly effective generator of singlet oxygen upon irradiation by low-power blue light. Analysis of conducted antibacterial tests on Staphyloccocus aureus and Escherichia coli showed 5-log bactericidal effect of these nanocomposites within 60 min of irradiation. Very powerful degradation of dye (rose bengal) was observed within 180 min of blue light irradiation of the nanocomposites. Biocompatibility studies revealed that nanocomposites were not cytotoxic against mouse embryonic fibroblast cell line, whereas they showed moderate cytotoxicity toward adenocarcinomic human epithelial cell line. Minor hemolytic effect of these nanocomposites toward red blood cells was revealed.
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Affiliation(s)
- Mária Kováčová
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cestá 9, 84541 Bratislava, Slovakia
| | - Zoran M Marković
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cestá 9, 84541 Bratislava, Slovakia.,Vinča Institute of Nuclear Sciences, University of Belgrade, Mike Alasa 12-14, 11001 Belgrade, Serbia
| | - Petr Humpolíček
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati, 5678 Zlín, Czech Republic
| | - Matej Mičušík
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cestá 9, 84541 Bratislava, Slovakia
| | - Helena Švajdlenková
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cestá 9, 84541 Bratislava, Slovakia
| | - Angela Kleinová
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cestá 9, 84541 Bratislava, Slovakia
| | - Martin Danko
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cestá 9, 84541 Bratislava, Slovakia
| | - Pavel Kubát
- J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejškova 3, 182 23 Praha 8, Czech Republic
| | - Jan Vajďák
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati, 5678 Zlín, Czech Republic
| | - Zdenka Capáková
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati, 5678 Zlín, Czech Republic
| | - Marián Lehocký
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati, 5678 Zlín, Czech Republic
| | - Lukaš Münster
- Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati, 5678 Zlín, Czech Republic
| | | | - Zdeno Špitalský
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cestá 9, 84541 Bratislava, Slovakia
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116
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Podder S, Chanda D, Mukhopadhyay AK, De A, Das B, Samanta A, Hardy JG, Ghosh CK. Effect of Morphology and Concentration on Crossover between Antioxidant and Pro-oxidant Activity of MgO Nanostructures. Inorg Chem 2018; 57:12727-12739. [PMID: 30281293 DOI: 10.1021/acs.inorgchem.8b01938] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The toxicity of nanomaterials can sometimes be attributed to photogenerated reactive oxygen species (ROS), but these ROS can also be scavenged by nanomaterials, yielding opportunities for crossover between the properties. The morphology of nanomaterials also influences such features due to defect-induced properties. Here we report morphology-induced crossover between pro-oxidant activity (ROS generation) and antioxidant activity (ROS scavenging) of MgO. To study this process in detail, we prepared three different nanostructures of MgO (nanoparticles, nanoplates, and nanorods) and characterized them by HRTEM. These three nanostructures effectively generate superoxide anions (O2•-) and hydroxyl radicals (•OH) at higher concentrations (>500 μg/mL) but scavenge O2•- at lower concentrations (40 μg/mL) with successful crossover at 200 μg/mL. Nanorods of MgO generate the highest levels of O2•-, whereas nanoparticles scavenge O2•- to the highest extent (60%). Photoluminescence studies reveal that such crossover is based on the suppression of F2+ and the evolution of F+, F2+, and F23+ defect centers. The evolution of these defect centers reflects the antibacterial activity of MgO nanostructures which is initiated at 200 μg/mL against Gram-positive S. aureus ATCC 29737 and among different bacterial strains including Gram-positive B. subtilis ATCC 6633 and M. luteus ATCC 10240 and Gram-negative E. coli ATCC K88 and K. pneumoniae ATCC 10031. Nanoparticles exhibited the highest antibacterial (92%) and antibiofilm activity (17%) against B. subtilis ATCC 6633 in the dark. Interestingly, the nitrogen-centered free radical DPPH is scavenged (100%) by nanoplates due to its large surface area (342.2 m2/g) and the presence of the F2+ defect state. The concentration-dependent interaction with an antioxidant defense system (ascorbic acid (AA)) highlights nanoparticles as potent scavengers of O2•- in the dark. Thus, our findings establish guidelines for the selection of MgO nanostructures for diverse therapeutic applications.
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Affiliation(s)
- Soumik Podder
- School of Materials Science and Nanotechnology , Jadavpur University , Kolkata 700032 , India
| | - Dipak Chanda
- School of Materials Science and Nanotechnology , Jadavpur University , Kolkata 700032 , India.,Advanced Mechanical and Materials Characterization Division , CSIR-Central Glass and Ceramic Research Institute , Kolkata 700032 , India
| | - Anoop Kumar Mukhopadhyay
- Advanced Mechanical and Materials Characterization Division , CSIR-Central Glass and Ceramic Research Institute , Kolkata 700032 , India
| | - Arnab De
- Department of Pharmaceutical Technology , Jadavpur University , Kolkata 700032 , India
| | - Bhaskar Das
- Department of Pharmaceutical Technology , Jadavpur University , Kolkata 700032 , India
| | - Amalesh Samanta
- Department of Pharmaceutical Technology , Jadavpur University , Kolkata 700032 , India
| | - John George Hardy
- Department of Chemistry , Lancaster University , Lancaster , Lancashire LA1 4YB , U.K.,Materials Science Institute , Lancaster University , Lancaster , Lancashire LA1 4YB , U.K
| | - Chandan Kumar Ghosh
- School of Materials Science and Nanotechnology , Jadavpur University , Kolkata 700032 , India
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117
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Xie J, Wang C, Zhao F, Gu Z, Zhao Y. Application of Multifunctional Nanomaterials in Radioprotection of Healthy Tissues. Adv Healthc Mater 2018; 7:e1800421. [PMID: 30019546 DOI: 10.1002/adhm.201800421] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 06/18/2018] [Indexed: 01/06/2023]
Abstract
Radiotherapy has been extensively used in clinic for malignant tumors treatment. However, a severe challenge of it is that the ionizing radiation needed to kill tumors inevitably causes damage to surrounding normal tissues. Although some of the molecular radioprotective drugs, such as amifostine, have been used as clinical adjuvants to radio-protect healthy tissues, their shortcomings such as short systemic circulation time and fast biological clearing from the body largely hinder the sustained bioactivity. Recently, with the rapid development of nanotechnology in the biological field, the multifunctional nanomaterials not only establish powerful drug delivery systems to improve the molecular radioprotective drugs' biological availability, but also open a new route to develop neozoic radioprotective agents because some nanoparticles possess intrinsic radioprotective abilities. Therefore, considering these overwhelming superiorities, this review systematically summarizes the advances in healthy tissue radioprotection applications of multifunctional nanomaterials. Furthermore, this review also points out a perspective of nanomaterial designs for radioprotection applications and discusses the challenges and future outlooks of the nanomaterial-mediated radioprotection.
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Affiliation(s)
- Jiani Xie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety; Institute of High Energy Physics; Chinese Academy of Sciences; Beijing 100049 China
| | - Chengyan Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety; Institute of High Energy Physics; Chinese Academy of Sciences; Beijing 100049 China
| | - Feng Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety; Institute of High Energy Physics; Chinese Academy of Sciences; Beijing 100049 China
| | - Zhanjun Gu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety; Institute of High Energy Physics; Chinese Academy of Sciences; Beijing 100049 China
- College of Materials Science and Optoelectronic Technology; University of Chinese Academy of Sciences; Beijing 100049 China
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety; Institute of High Energy Physics; Chinese Academy of Sciences; Beijing 100049 China
- College of Materials Science and Optoelectronic Technology; University of Chinese Academy of Sciences; Beijing 100049 China
- CAS Center for Excellence in Nanoscience; National Center for Nanoscience and Technology of China; Chinese Academy of Sciences; Beijing 100190 China
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118
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Bao X, Zhao J, Sun J, Hu M, Yang X. Polydopamine Nanoparticles as Efficient Scavengers for Reactive Oxygen Species in Periodontal Disease. ACS NANO 2018; 12:8882-8892. [PMID: 30028940 DOI: 10.1021/acsnano.8b04022] [Citation(s) in RCA: 314] [Impact Index Per Article: 52.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Antioxidative therapy has been considered an efficient strategy for the treatment of a series of excessive reactive oxygen species (ROS)-triggered diseases, including oxidative-stress-induced periodontal disease. However, current natural enzymes and nanozymes often show their high specificity toward given ROS and have insufficient antioxidative effects against multiple ROS generated in the diseases process. Meanwhile, multienzyme-based antioxidant defense systems are usually confined by the complicated synthesis as well as potential unwanted residue and toxicity. Various supports are highly needed to immobilize natural enzymes and antioxidants during the biorelated usages due to their low operational stability and difficulty of reuse. To overcome these limitations, we develop a high-performance platform by using biodegradable polydopamine nanoparticles (PDA NPs) as smart ROS scavengers in oxidative stress-induced periodontal disease. Although PDA-based materials are well-known to eliminate ROS both in vitro and in vivo, their antioxidative performance in periodontal disease and relative mechanisms have yet to be well-explored. In this study, PDA NPs can act as ROS scavengers in dental specialties with ideal outcomes. Spectroscopic and in vitro experiments provide strong evidence for the roles of PDA NPs in scavenging multiple ROS and suppressing ROS-induced inflammation reactions. In addition to the above investigations, the results from a murine periodontitis model clearly demonstrate the feasibility of PDA NPs as robust antioxidants with which to remove ROS and decrease periodontal inflammation without any side effects. Taken together, the results from our present study will provide valuable insight into the development of safe and efficient antioxidant defense platforms for further biomedical uses.
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Affiliation(s)
- Xingfu Bao
- State Key Laboratory of Electroanalytical Chemistry , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , China
- School of Stomatology , Jilin University , Changchun , Jilin 130021 , China
| | - Jiahui Zhao
- State Key Laboratory of Electroanalytical Chemistry , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Jian Sun
- State Key Laboratory of Electroanalytical Chemistry , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , China
| | - Min Hu
- School of Stomatology , Jilin University , Changchun , Jilin 130021 , China
| | - Xiurong Yang
- State Key Laboratory of Electroanalytical Chemistry , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , China
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119
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Lakshmanan R, Maulik N. Graphene-based drug delivery systems in tissue engineering and nanomedicine. Can J Physiol Pharmacol 2018; 96:869-878. [PMID: 30136862 DOI: 10.1139/cjpp-2018-0225] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The time and dosage form of graphene derivatives have been found to determine therapeutic and toxic windows in several cell lines and preclinical models. The enhanced biological action of graphene derivatives is made possible by altering the chemistry of native materials via surface conjugation, or by changing the oxidation state. The high level of chemical reactivity vested in the planar structure of graphene can be used to load various drugs and biomolecules with maximum radical scavenging effect. The integration of graphene and polymers brings electrical conductivity to scaffolds, making them ideal for cardiac or neuronal tissue engineering. Drawbacks associated with graphene-based materials for biomedical applications include defect-free graphene formation and heteroatom contamination during synthesis process; reduced availability of sp2 hybridized carbon centers due to serum proteins masking; and poor availability of data pertaining to in vivo clearance of graphene-based formulations. Personalized medicine is an emerging area of alternative treatments, which in combination with graphene-based nanobiomaterials, has revolutionary potential for the development of individualized nanocarriers to treat highly challenging diseases.
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Affiliation(s)
- Rajesh Lakshmanan
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut Health, Farmington, CT 06030, USA.,Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut Health, Farmington, CT 06030, USA
| | - Nilanjana Maulik
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut Health, Farmington, CT 06030, USA.,Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut Health, Farmington, CT 06030, USA
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120
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Zhang M, Wang H, Song Y, Huang H, Shao M, Liu Y, Li H, Kang Z. Pristine Carbon Dots Boost the Growth of Chlorella vulgaris by Enhancing Photosynthesis. ACS APPLIED BIO MATERIALS 2018; 1:894-902. [DOI: 10.1021/acsabm.8b00319] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mengling Zhang
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
| | - Huibo Wang
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
| | - Yuxiang Song
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
| | - Hui Huang
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
| | - Mingwang Shao
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
| | - Yang Liu
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
| | - Hao Li
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
| | - Zhenhui Kang
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
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121
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Zhang W, Chavez J, Zeng Z, Bloom B, Sheardy A, Ji Z, Yin Z, Waldeck DH, Jia Z, Wei J. Antioxidant Capacity of Nitrogen and Sulfur Codoped Carbon Nanodots. ACS APPLIED NANO MATERIALS 2018; 1:2699-2708. [PMID: 36938561 PMCID: PMC10022828 DOI: 10.1021/acsanm.8b00404] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Carbon nanodots (CNDs) have shown potential for antioxidative activity at the cellular level. Here we applied a facile hydrothermal method to prepare fluorescent nitrogen and sulfur (N,S-)codoped CNDs using α-lipoic acid, citric acid, and urea as precursor molecules. This work describes a comprehensive study for exploring their antioxidation activity using UV-vis absorption and electrochemistry measurements of 2,2-diphenyl-1-picrylhydrazyl radical (DPPH•), as well as a lucigenin chemiluminescence (lucigenin-CL) assay. The lucigenin-CL assay detects superoxide anion radicals, i.e., reactive oxygen species (ROS) produced through the xanthine/xanthine oxidase (XO) reaction. The electrochemically derived relationship between the unreacted nitrogen-centered DPPH• and CND concentrations agrees with that obtained from UV-vis measurements. A reaction pathway for the ROS antioxidative reaction of N,S-codoped CNDs is proposed. These findings should aid in the development of N,S-codoped CNDs for practical use in biomedical applications.
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Affiliation(s)
- Wendi Zhang
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, United States
| | - Jessica Chavez
- Department of Biology, University of North Carolina at Greensboro, Greensboro, North Carolina 27412, United States
| | - Zheng Zeng
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, United States
| | - Brian Bloom
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Alex Sheardy
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, United States
| | - Zuowei Ji
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, United States
| | - Ziyu Yin
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, United States
| | - David H. Waldeck
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Zhenquan Jia
- Department of Biology, University of North Carolina at Greensboro, Greensboro, North Carolina 27412, United States
| | - Jianjun Wei
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, United States
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122
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Cao GJ, Fisher CM, Jiang X, Chong Y, Zhang H, Guo H, Zhang Q, Zheng J, Knolhoff AM, Croley TR, Yin JJ. Platinum nanoparticles: an avenue for enhancing the release of nitric oxide from S-nitroso-N-acetylpenicillamine and S-nitrosoglutathione. NANOSCALE 2018; 10:11176-11185. [PMID: 29873378 DOI: 10.1039/c8nr03874k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nitric oxide (NO) is an endogenous bioregulator with established roles in diverse fields. The difficulty in the modulation of NO release is still a significant obstacle to achieving successful clinical applications. We report herein our initial work using electron spin resonance (ESR) spectroscopy to detect NO generated from S-nitroso-N-acetylpenicillamine (SNAP) and S-nitrosoglutathione (GSNO) donors catalyzed by platinum nanoparticles (Pt NPs, 3 nm) under physiological conditions. With ESR spectroscopy coupled with spin trapping and spin labeling techniques, we identified that Pt NPs can significantly promote the generation of NO from SNAP and GSNO under physiological conditions. A classic NO colorimetric detection kit was also employed to verify that Pt NPs truly triggered the release of NO from its donors. Pt NPs can act as promising delivery vehicles for on-demand NO delivery based on time and dosage. These results, along with the detection of the resulting disulfide product, were confirmed with mass spectrometry. In addition, cellular experiments provided a convincing demonstration that the triggered release of NO from its donors by Pt NPs is efficient in killing human cancer cells in vitro. The catalytic mechanism was elucidated by X-ray photo-electron spectroscopy (XPS) and ultra-high performance liquid chromatography/high-resolution mass spectrometry (UHPLC-HRMS), which suggested that Pt-S bond formation occurs in the solution of Pt NPs and NO donors. Identification of Pt NPs capable of generating NO from S-nitrosothiols (RSNOs) is an important step in harnessing NO for investigations into its clinical applications and therapies.
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Affiliation(s)
- Gao-Juan Cao
- Department of Applied Chemistry, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
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123
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Ruan J, Wang Y, Li F, Jia R, Zhou G, Shao C, Zhu L, Cui M, Yang DP, Ge S. Graphene Quantum Dots for Radiotherapy. ACS APPLIED MATERIALS & INTERFACES 2018; 10:14342-14355. [PMID: 29542912 DOI: 10.1021/acsami.7b18975] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Radiation therapy is a kind of tumor treatment that has been widely employed in clinics, but its therapeutic effect is largely hampered by various factors. Currently, considerable efforts are being made in the search for effective and safe radiosensitizers. A nano-radiosensitizer is an ideal choice for improving the effects of tumor radiotherapy due to its high degree of tumor tissue uptake and secondary electrons' productivity. Herein, highly oxidized graphene quantum dots (GQDs) with a good oxidative stress response and significantly high phototoxicity were prepared and purified via the photo-Fenton reaction of graphene oxide. The enhanced radiosensitization effects were systematically evaluated by monitoring colorectal carcinoma cell cycle and the degree of apoptosis, and the possible mechanism of the GQD irradiating enhancement of cell apoptosis was preliminarily investigated. Our data showed that the GQD synergy with ionizing radiation (IR) could noticeably enhance the G2/M stage arrest of cells, inhibit cell proliferation, and improve apoptosis. This is mainly due to the overproduction of reactive oxygen species by GQDs in combination with the IR, which activates the apoptosis-related regulation proteins and results in tumor cell apoptosis. This study suggests that the GQDs can act as a new nano-radiosensitizer in tumor radiotherapy.
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Affiliation(s)
- Jing Ruan
- Department of Ophthalmology , Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai 200011 , People's Republic of China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology , Shanghai 200011 , People's Republic of China
| | - Ying Wang
- Department of Ophthalmology , Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai 200011 , People's Republic of China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology , Shanghai 200011 , People's Republic of China
| | - Fang Li
- Department of Ophthalmology , Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai 200011 , People's Republic of China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology , Shanghai 200011 , People's Republic of China
| | - Renbing Jia
- Department of Ophthalmology , Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai 200011 , People's Republic of China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology , Shanghai 200011 , People's Republic of China
| | - Guangming Zhou
- Department of Radiation Biology, School of Radiation Medication and Protection , Soochow University , Suzhou 215123 , People's Republic of China
| | - Chunlin Shao
- Department of Ophthalmology , Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai 200011 , People's Republic of China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology , Shanghai 200011 , People's Republic of China
- Department of Radiation Biology, School of Radiation Medication and Protection , Soochow University , Suzhou 215123 , People's Republic of China
| | - Liqi Zhu
- Department of Ophthalmology , Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai 200011 , People's Republic of China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology , Shanghai 200011 , People's Republic of China
| | - Malin Cui
- College of Chemical Engineering and Materials Science , Quanzhou Normal University , Quanzhou 362000 , People's Republic of China
| | - Da-Peng Yang
- College of Chemical Engineering and Materials Science , Quanzhou Normal University , Quanzhou 362000 , People's Republic of China
| | - Shengfang Ge
- Department of Ophthalmology , Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai 200011 , People's Republic of China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology , Shanghai 200011 , People's Republic of China
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124
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Zhu P, Chen Y, Shi J. Nanoenzyme-Augmented Cancer Sonodynamic Therapy by Catalytic Tumor Oxygenation. ACS NANO 2018; 12:3780-3795. [PMID: 29613770 DOI: 10.1021/acsnano.8b00999] [Citation(s) in RCA: 342] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Ultrasound (US)-triggered sonodynamic therapy (SDT) can solve the critical issue of low tissue-penetrating depth of traditional phototriggered therapies, but the SDT efficacy is still not satisfactorily high in combating cancer at the current stage. Here we report on augmenting the SDT efficacy based on catalytic nanomedicine, which takes the efficient catalytic features of nanoenzymes to modulate the tumor microenvironment (TME). The multifunctional nanosonosensitizers have been successfully constructed by the integration of a MnO x component with biocompatible/biodegradable hollow mesoporous organosilica nanoparticles, followed by conjugation with protoporphyrin (as the sonosensitizer) and cyclic arginine-glycine-aspartic pentapeptide (as the targeting peptide). The MnO x component in the composite nanosonosensitizer acts as an inorganic nanoenzyme for converting the tumor-overexpressed hydrogen peroxide (H2O2) molecules into oxygen and enhancing the tumor oxygen level subsequently, which has been demonstrated to facilitate SDT-induced reactive oxygen species production and enhance SDT efficacy subsequently. The targeted accumulation of these composite nanosonosensitizers efficiently suppressed the growth of U87 tumor xenograft on nude mice after US-triggered SDT treatment. The high in vivo biocompatibility and easy excretion of these multifunctional nanosonosensitizers from the body have also been evaluated and demonstrated to guarantee their future clinical translation, and their TME-responsive T1-weighted magnetic resonance imaging capability provides the potential for therapeutic guidance and monitoring during SDT.
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Affiliation(s)
- Piao Zhu
- State Key Lab of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Yu Chen
- State Key Lab of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , People's Republic of China
| | - Jianlin Shi
- State Key Lab of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , People's Republic of China
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125
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Chen T, Zou H, Wu X, Liu C, Situ B, Zheng L, Yang G. Nanozymatic Antioxidant System Based on MoS 2 Nanosheets. ACS APPLIED MATERIALS & INTERFACES 2018; 10:12453-12462. [PMID: 29595050 DOI: 10.1021/acsami.8b01245] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The enzymatic antioxidant system (EAS) protects aerobic cells from oxidative stress. However, it is brittle and susceptible of inactivation of reactive oxygen species (ROS) immoderate production. Here, we demonstrated that MoS2 nanosheets (few-layer MoS2), as a multifunctional nanozyme, possess intrinsic activity of mimicking enzymes of superoxide dismutases (SODs), catalases (CATs), and peroxidases (PODs) under physiological conditions (pH 7.4, 25 °C). Further, MoS2 nanosheets showed POD-like activity by transferring electrons instead of generating ROS. Similar to EAS, a defense termed nanozymatic antioxidant system (NAS) was developed by MoS2 nanosheets, for regulation of oxidative stress. Surprisingly, this NAS can effectively scavenge other free radicals including hydroxyl radicals (•OH), nitrogen-centered free radicals (•DPPH), and nitric oxide (•NO). To evaluate these unique properties of MoS2-based NAS in vivo, Escherichia coli ( E. coli), Staphylococcus aureus ( S. aureus), and A549 cell models were established, respectively. These results showed MoS2 nanosheets superiorly protect bacteria and cells against oxidative injury caused by H2O2. This work makes MoS2 nanosheets promising antioxidants in the pathological processes and expands their application in biocatalysis and nano-biomedicine.
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Affiliation(s)
- Tongming Chen
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Materials Science & Engineering, School of Physics , Sun Yat-sen University , Guangzhou 510275 Guangdong , P. R. China
| | - Hang Zou
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University/The First School of Clinical Medicine , Southern Medical University , Guangzhou 510515 Guangdong , P. R. China
| | - Xiaoju Wu
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Materials Science & Engineering, School of Physics , Sun Yat-sen University , Guangzhou 510275 Guangdong , P. R. China
| | - Chunchen Liu
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University/The First School of Clinical Medicine , Southern Medical University , Guangzhou 510515 Guangdong , P. R. China
| | - Bo Situ
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University/The First School of Clinical Medicine , Southern Medical University , Guangzhou 510515 Guangdong , P. R. China
| | - Lei Zheng
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University/The First School of Clinical Medicine , Southern Medical University , Guangzhou 510515 Guangdong , P. R. China
| | - Guowei Yang
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Materials Science & Engineering, School of Physics , Sun Yat-sen University , Guangzhou 510275 Guangdong , P. R. China
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126
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Tian X, Jiang X, Welch C, Croley TR, Wong TY, Chen C, Fan S, Chong Y, Li R, Ge C, Chen C, Yin JJ. Bactericidal Effects of Silver Nanoparticles on Lactobacilli and the Underlying Mechanism. ACS APPLIED MATERIALS & INTERFACES 2018; 10:8443-8450. [PMID: 29481051 DOI: 10.1021/acsami.7b17274] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
While the antibacterial properties of silver nanoparticles (AgNPs) have been demonstrated across a spectrum of bacterial pathogens, the effects of AgNPs on the beneficial bacteria are less clear. To address this issue, we compared the antibacterial activity of AgNPs against two beneficial lactobacilli ( Lactobacillus delbrueckii subsp. bulgaricus and Lactobacillus casei) and two common opportunistic pathogens ( Escherichia coli and Staphylococcus aureus). Our results demonstrate that those lactobacilli are highly susceptible to AgNPs, while the opportunistic pathogens are not. Acidic environment caused by the lactobacilli is associated with the bactericidal effects of AgNPs. Our mechanistic study suggests that the acidic growth environment of lactobacilli promotes AgNP dissolution and hydroxyl radical (•OH) overproduction. Furthermore, increases in silver ions (Ag+) and •OH deplete the glutathione pool inside the cell, which is associated with the increase in cellular reactive oxygen species (ROS). High levels of ROS may further induce DNA damage and lead to cell death. When E. coli and S. aureus are placed in a similar acidic environment, they also become more susceptible to AgNPs. This study provides a mechanistic description of a pH-Ag+-•OH bactericidal pathway and will contribute to the responsible development of products containing AgNPs.
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Affiliation(s)
- Xin Tian
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Soochow University , Suzhou 215123 , China
| | | | | | | | - Tit-Yee Wong
- Department of Biological Sciences , University of Memphis , Memphis , Tennessee 38120 , United States
| | - Chao Chen
- School for Life Science , Shanxi University , Taiyuan 030006 , China
| | - Sanhong Fan
- School for Life Science , Shanxi University , Taiyuan 030006 , China
| | - Yu Chong
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Soochow University , Suzhou 215123 , China
| | - Ruibin Li
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Soochow University , Suzhou 215123 , China
| | - Cuicui Ge
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Soochow University , Suzhou 215123 , China
| | - Chunying Chen
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology of China and Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100190 , China
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127
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Rizzo C, Arcudi F, Đorđević L, Dintcheva NT, Noto R, D'Anna F, Prato M. Nitrogen-Doped Carbon Nanodots-Ionogels: Preparation, Characterization, and Radical Scavenging Activity. ACS NANO 2018; 12:1296-1305. [PMID: 29283554 DOI: 10.1021/acsnano.7b07529] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Hybrid diimidazolium-based ionogels were obtained by dispersing nitrogen-doped carbon nanodots (NCNDs) in ionic liquid (IL) solutions and by using dicationic organic salts as gelators. The properties of the NCND-ionogels were studied in terms of thermal stability, mechanical strength, morphology, rheological, and microscopic analyses. Insights into the formation of the hybrid soft material were attained from kinetics of sol-gel phase transition and from estimating the size of the aggregates, obtained from opacity and resonance light-scattering measurements. We demonstrate that, on one hand, NCNDs were able to favor the gel formation both in the presence of gelating and nongelating ILs. On the other hand, the gelatinous matrix retains and, in some cases, improves the properties of NCNDs. The NCND-ionogels showed the typical fluorescence emission of the carbon dots and a notable antiradical activity, with higher efficiency as compared to the single components. The presented hybrid materials hold great promise for topical applications in antioxidant fields.
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Affiliation(s)
- Carla Rizzo
- Dipartimento STEBICEF-Sezione di Chimica, Università degli Studi di Palermo , Viale delle Scienze Ed. 17, 90128 Palermo, Italy
| | - Francesca Arcudi
- Dipartimento di Scienze Chimiche e Farmaceutiche, INSTM UdR Trieste, Università degli Studi di Trieste , Via Licio Giorgieri 1, 34127 Trieste, Italy
| | - Luka Đorđević
- Dipartimento di Scienze Chimiche e Farmaceutiche, INSTM UdR Trieste, Università degli Studi di Trieste , Via Licio Giorgieri 1, 34127 Trieste, Italy
| | - Nadka Tzankova Dintcheva
- Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università degli Studi di Palermo , Viale delle Scienze Ed. 8, 90128 Palermo, Italy
| | - Renato Noto
- Dipartimento STEBICEF-Sezione di Chimica, Università degli Studi di Palermo , Viale delle Scienze Ed. 17, 90128 Palermo, Italy
| | - Francesca D'Anna
- Dipartimento STEBICEF-Sezione di Chimica, Università degli Studi di Palermo , Viale delle Scienze Ed. 17, 90128 Palermo, Italy
| | - Maurizio Prato
- Dipartimento di Scienze Chimiche e Farmaceutiche, INSTM UdR Trieste, Università degli Studi di Trieste , Via Licio Giorgieri 1, 34127 Trieste, Italy
- Carbon Nanobiotechnology Laboratory CIC biomaGUNE , Paseo de Miramón 182, 20009 Donostia-San Sebastián, Spain
- Basque Fdn Sci Ikerbasque , Bilbao, Spain
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128
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Li YR, Santo A, Zhu H, Jia Z, Trush MA. Graphene Quantum Dots Protect against Copper Redox-Mediated Free Radical Generation and Cardiac Cell Injury. REACTIVE OXYGEN SPECIES (APEX, N.C.) 2018; 6:338-348. [PMID: 30177973 DOI: 10.20455/ros.2018.855] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In this work, we investigated the effects of graphene quantum dots (GQDs) on copper redox-mediated free radical generation and cell injury. Using electron paramagnetic resonance (EPR) spectrometry in conjunction with 5,5-dimethyl-1-pyrroline N-oxide (DMPO) as a spin trap, we found that GQDs at a concentration as low as 1 μg/ml significantly inhibited Cu(II)/H2O2-mediated hydroxyl radical formation. GQDs also blocked Cu(II)-catalyzed nucleophilic addition of H2O to DMPO to form a DMPO-OH adduct in the absence of H2O2, suggesting a potential for GQDs to inhibit copper redox activity. Indeed, we observed that the presence of GQDs prevented H2O2-mediated reduction of Cu(II) to Cu(I) though GQDs themselves also caused the reduction of Cu(II) to Cu(I). To further investigate the effects of GQDs on copper redox activity, we employed the Cu(II)/hydroquinone system in which copper redox activity plays an essential role in the oxidation of hydroquinone to semiquinone radicals with consequent oxygen consumption. Using oxygen polarography as well as EPR spectrometry, we demonstrated that the presence of GQDs drastically blocked the oxygen consumption and semiquinone radical formation resulting from the reaction of Cu(II) and hydroquinone. These results suggested that GQDs suppressed free radical formation via inhibiting copper redox activity. Lastly, using cultured human cardiomyocytes, we demonstrated that the presence of GQDs also protected against Cu(II)/H2O2-mediated cardiac cell injury as indicated by morphological changes (e.g., cell shrinkage and degeneration). In conclusion, our work shows, for the first time, the potential for using GQDs to counteract copper redox-mediated biological damage.
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Affiliation(s)
- Y Robert Li
- Department of Pharmacology, Campbell University Medical School, Buies Creek, NC 27506, USA.,Department of Pharmaceutical Sciences, Campbell University College of Pharmacy and Health Sciences, Buies Creek, NC 27506, USA.,Department of Biology, University of North Carolina College of Arts and Sciences, Greensboro, NC 27412, USA.,Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Blacksburg, VA 24061, USA.,Department of Biomedical Sciences and Pathobiology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
| | - Arben Santo
- Department of Pathology, EVCOM, Virginia Tech CRC, Blacksburg, VA 24060, USA
| | - Hong Zhu
- Department of Physiology and Pathophysiology, Campbell University Medical School, Buies Creek, NC 27506, USA
| | - Zhenquan Jia
- Department of Pharmacology, Campbell University Medical School, Buies Creek, NC 27506, USA.,Department of Pharmaceutical Sciences, Campbell University College of Pharmacy and Health Sciences, Buies Creek, NC 27506, USA.,Department of Biology, University of North Carolina College of Arts and Sciences, Greensboro, NC 27412, USA
| | - Michael A Trush
- Department of Environmental Health and Engineering, The Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205, USA
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129
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Moorthy M, Kumar VB, Porat Z, Gedanken A. Novel polymerization of aniline and pyrrole by carbon dots. NEW J CHEM 2018. [DOI: 10.1039/c7nj03389c] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This work reports on the synthesis of polymers (polyaniline, polypyrrole, and co-polymerization of polyaniline and polypyrrole) from monomers using carbon dots and UV light as initiators.
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Affiliation(s)
- Maruthapandi Moorthy
- Bar-Ilan Institute for Nanotechnology and Advanced Materials
- Department of Chemistry
- Bar-Ilan University
- Ramat-Gan 5290002
- Israel
| | - Vijay Bhooshan Kumar
- Bar-Ilan Institute for Nanotechnology and Advanced Materials
- Department of Chemistry
- Bar-Ilan University
- Ramat-Gan 5290002
- Israel
| | - Ze’ev Porat
- Institute of Applied Research
- Ben-Gurion University of the Negev
- Be’er Sheva 84105
- Israel
- Division of Chemistry
| | - Aharon Gedanken
- Bar-Ilan Institute for Nanotechnology and Advanced Materials
- Department of Chemistry
- Bar-Ilan University
- Ramat-Gan 5290002
- Israel
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130
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Mitochondrial specific photodynamic therapy by rare-earth nanoparticles mediated near-infrared graphene quantum dots. Biomaterials 2018; 153:14-26. [DOI: 10.1016/j.biomaterials.2017.10.034] [Citation(s) in RCA: 161] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 10/07/2017] [Accepted: 10/18/2017] [Indexed: 01/14/2023]
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131
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Marković ZM, Jovanović SP, Mašković PZ, Danko M, Mičušík M, Pavlović VB, Milivojević DD, Kleinová A, Špitalský Z, Todorović Marković BM. Photo-induced antibacterial activity of four graphene based nanomaterials on a wide range of bacteria. RSC Adv 2018; 8:31337-31347. [PMID: 35548242 PMCID: PMC9085601 DOI: 10.1039/c8ra04664f] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 08/24/2018] [Indexed: 11/21/2022] Open
Abstract
Due to controversial reports concerning antibacterial activity of different graphene based materials it is very important to investigate their antibacterial action on a wide range of Gram-positive and Gram-negative bacteria. In this paper we have investigated the structure induced phototoxic antibacterial activity of four types of graphene based materials: graphene oxide (GO), graphene quantum dots (GQDs), carbon quantum dots (CQDs) and nitrogen doped carbon quantum dots (N-CQDs). Antibacterial activity was tested on 19 types of bacteria. It is found that nanometer-size CQDs and N-CQDs are the most potent agents whereas micrometer-size GO has very poor antibacterial activity. Electron paramagnetic resonance measurements confirmed photodynamic production of singlet oxygen for all types of used quantum dots. Detailed analysis has shown that N-CQDs are an excellent photodynamic antibacterial agent for treatment of bacterial infections induced by Enterobacter aerogenes (E. aerogenes), Proteus mirabilis (P. mirabilis), Staphylococcus saprophyticus (S. saprophyticus), Listeria monocytogenes (L. monocytogenes), Salmonella typhimurium (S. typhimurium) and Klebsiella pneumoniae. Antibacterial potentials of four graphene based nanomaterials are tested on a wide range of bacteria.![]()
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Affiliation(s)
- Zoran M. Marković
- Polymer Institute
- Slovak Academy of Sciences
- 84541 Bratislava
- Slovakia
- Vinča Institute of Nuclear Sciences
| | | | - Pavle Z. Mašković
- The Faculty of Agronomy Čačak
- University of Kragujevac
- 32000 Čačak
- Serbia
| | - Martin Danko
- Polymer Institute
- Slovak Academy of Sciences
- 84541 Bratislava
- Slovakia
| | - Matej Mičušík
- Polymer Institute
- Slovak Academy of Sciences
- 84541 Bratislava
- Slovakia
| | - Vladimir B. Pavlović
- Faculty of Agriculture
- Department of Agricultural Engineering
- University of Belgrade
- Nemanjina 6
- Zemun
| | | | - Angela Kleinová
- Polymer Institute
- Slovak Academy of Sciences
- 84541 Bratislava
- Slovakia
| | - Zdeno Špitalský
- Polymer Institute
- Slovak Academy of Sciences
- 84541 Bratislava
- Slovakia
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132
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Chen J, Li S, Zhang Y, Wang W, Zhang X, Zhao Y, Wang Y, Bi H. A Reloadable Self-Healing Hydrogel Enabling Diffusive Transport of C-Dots Across Gel-Gel Interface for Scavenging Reactive Oxygen Species. Adv Healthc Mater 2017; 6. [PMID: 28945014 DOI: 10.1002/adhm.201700746] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 08/09/2017] [Indexed: 12/20/2022]
Abstract
While reloadable drug delivery platforms are highly prized for the treatment of a broad spectrum of diseases, the gel-gel interface between hydrogels hinders the intergel diffusive transport of drugs and thus limits the application of hydrogels as reloadable depots. Here, this study reports the circumvention of this barrier by employing a self-healing hydrogel prepared from N-carboxyethyl chitosan and sodium alginate dialdehyde, which are cross-linked via a reversible Schiff base linkage. The injectable and bioadhesive hydrogel shows a rapid gelation time of 47 s. The dynamic self-healing process enables the efficient diffusive transport of carbon quantum dots (C-dots) into an adjacent hydrogel, and thus, the C-dots can be used to scavenge reactive oxygen species from a remote inflammation site. Specifically, the diffusive transport of the C-dots in the self-healing hydrogel after three sequential reloading steps is sevenfold greater than that in the non-self-healing counterpart. In vivo, hematoxylin and eosin staining of the murine skin at the injection site shows no apparent symptoms of inflammation in the group treated with the reloadable self-healing hydrogel. The current strategy represents a promising and straightforward route for the design of a reloadable drug delivery system for future use in clinical application.
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Affiliation(s)
- Jing Chen
- College of Chemistry and Chemical Engineering; Anhui University; Hefei 230601 China
- School of Life Sciences; Hefei Normal University; Hefei 230601 China
| | - Shuya Li
- The Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Diseases School of Life Sciences and Medical Center; University of Science and Technology of China; Hefei 230027 China
| | - Ye Zhang
- College of Chemistry and Chemical Engineering; Anhui University; Hefei 230601 China
| | - Wei Wang
- School of Life Sciences; Hefei Normal University; Hefei 230601 China
| | - Xiang Zhang
- College of Chemistry and Chemical Engineering; Anhui University; Hefei 230601 China
| | - Yangyang Zhao
- The Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Diseases School of Life Sciences and Medical Center; University of Science and Technology of China; Hefei 230027 China
| | - Yucai Wang
- The Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Diseases School of Life Sciences and Medical Center; University of Science and Technology of China; Hefei 230027 China
| | - Hong Bi
- College of Chemistry and Chemical Engineering; Anhui University; Hefei 230601 China
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133
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Tomić S, Janjetović K, Mihajlović D, Milenković M, Kravić-Stevović T, Marković Z, Todorović-Marković B, Spitalsky Z, Micusik M, Vučević D, Čolić M, Trajković V. Graphene quantum dots suppress proinflammatory T cell responses via autophagy-dependent induction of tolerogenic dendritic cells. Biomaterials 2017; 146:13-28. [DOI: 10.1016/j.biomaterials.2017.08.040] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 08/23/2017] [Accepted: 08/28/2017] [Indexed: 12/20/2022]
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134
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Chong Y, Ge C, Fang G, Wu R, Zhang H, Chai Z, Chen C, Yin JJ. Light-Enhanced Antibacterial Activity of Graphene Oxide, Mainly via Accelerated Electron Transfer. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:10154-10161. [PMID: 28771330 DOI: 10.1021/acs.est.7b00663] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Before graphene derivatives can be exploited as next-generation antimicrobials, we must understand their behavior under environmental conditions. Here, we demonstrate how exposure to simulated sunlight significantly enhances the antibacterial activity of graphene oxide (GO) and reveal the underlying mechanism. Our measurements of reactive oxygen species (ROS) showed that only singlet oxygen (1O2) is generated by GO exposed to simulated sunlight, which contributes only slightly to the oxidation of antioxidant biomolecules. Unexpectedly, we find the main cause of oxidation is light-induced electron-hole pairs generated on the surface of GO. These light-induced electrons promote the reduction of GO, introducing additional carbon-centered free radicals that may also enhance the antibacterial activities of GO. We conclude that GO-mediated oxidative stress mainly is ROS-independent; simulated sunlight accelerates the transfer of electrons from antioxidant biomolecules to GO, thereby destroying bacterial antioxidant systems and causing the reduction of GO. Our insights will help support the development of graphene for antibacterial applications.
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Affiliation(s)
- Yu Chong
- School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University , Suzhou 215123, China
- Division of Bioanalytical Chemistry and Division of Analytical Chemistry, Office of Regulatory Science, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration , College Park, Maryland 20740, United States
| | - Cuicui Ge
- School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University , Suzhou 215123, China
- Division of Bioanalytical Chemistry and Division of Analytical Chemistry, Office of Regulatory Science, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration , College Park, Maryland 20740, United States
| | - Ge Fang
- School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University , Suzhou 215123, China
| | - Renfei Wu
- School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University , Suzhou 215123, China
| | - He Zhang
- School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University , Suzhou 215123, China
| | - Zhifang Chai
- School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University , Suzhou 215123, China
| | - Chunying Chen
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Chinese Academy of Sciences , Beijing 100190, China
| | - Jun-Jie Yin
- Division of Bioanalytical Chemistry and Division of Analytical Chemistry, Office of Regulatory Science, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration , College Park, Maryland 20740, United States
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135
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Chen TM, Wu XJ, Wang JX, Yang GW. WSe 2 few layers with enzyme mimic activity for high-sensitive and high-selective visual detection of glucose. NANOSCALE 2017; 9:11806-11813. [PMID: 28786467 DOI: 10.1039/c7nr03179c] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
As one of the transition metal dichalcogenide materials, WSe2 in the form of a few layers (nanosheets) have received much attention due to their unique physical, optical and electrical properties. Herein, we demonstrate that WSe2 nanosheets possess intrinsic enzyme mimic activity. Under acidic conditions, they exhibit pronounced peroxidase-like property. The Michaelis-Menten kinetics indicate that the catalytic activity of WSe2 nanosheets is comparable to that of horseradish peroxidase. Based on the color reaction, a platform of WSe2 nanosheets was constructed to detect glucose concentration and it showed high sensitivity and high selectivity, which means that WSe2 nanosheets with peroxidase-like property can be used to develop a highly sensitive and selective colorimetric method for glucose detection. Moreover, due to the electron-transferring and antioxidant properties of WSe2 few layers, the peroxidase-like catalysis is proposed. These findings pave the way for further application of WSe2 nanosheets in nano-biomedicine.
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Affiliation(s)
- T M Chen
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Materials Science & Engineering, School of Physics, Sun Yat-sen University, Guangzhou 510275, Guangdong, P. R. China.
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136
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Li F, Li T, Sun C, Xia J, Jiao Y, Xu H. Selenium‐Doped Carbon Quantum Dots for Free‐Radical Scavenging. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/anie.201705989] [Citation(s) in RCA: 199] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Feng Li
- Key Lab of Organic Optoelectronics & Molecular EngineeringDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Tianyu Li
- Key Lab of Organic Optoelectronics & Molecular EngineeringDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Chenxing Sun
- Key Lab of Organic Optoelectronics & Molecular EngineeringDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Jiahao Xia
- Key Lab of Organic Optoelectronics & Molecular EngineeringDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Yang Jiao
- Key Lab of Organic Optoelectronics & Molecular EngineeringDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Huaping Xu
- Key Lab of Organic Optoelectronics & Molecular EngineeringDepartment of ChemistryTsinghua University Beijing 100084 China
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137
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Jian HJ, Wu RS, Lin TY, Li YJ, Lin HJ, Harroun SG, Lai JY, Huang CC. Super-Cationic Carbon Quantum Dots Synthesized from Spermidine as an Eye Drop Formulation for Topical Treatment of Bacterial Keratitis. ACS NANO 2017; 11:6703-6716. [PMID: 28677399 DOI: 10.1021/acsnano.7b01023] [Citation(s) in RCA: 241] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We have developed a one-step method to synthesize carbon quantum dots (CQDPAs) from biogenic polyamines (PAs) as an antibacterial agent for topical treatment of bacterial keratitis (BK). CQDs synthesized by direct pyrolysis of spermidine (Spd) powder through a simple dry heating treatment exhibit a solubility and yield much higher than those from putrescine and spermine. We demonstrate that CQDs obtained from Spds (CQDSpds) possess effective antibacterial activities against non-multidrug-resistant Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Salmonella enterica serovar Enteritidis bacteria and also against the multidrug-resistant bacteria, methicillin-resistant S. aureus. The minimal inhibitory concentration (MIC) of CQDSpds is ∼2500-fold lower than that of spermidine alone, demonstrating their strong antibacterial capabilities. Investigation of the possible mechanisms behind the antibacterial activities of the as-synthesized CQDSpds indicates that the super-cationic CQDSpds with small size (diameter ca. 6 nm) and highly positive charge (ζ-potential ca. +45 mV) cause severe disruption of the bacterial membrane. In vitro cytotoxicity, hemolysis, hemagglutination, genotoxicity, and oxidative stress and in vivo morphologic and physiologic cornea change evaluations show the good biocompatibility of CQDSpds. Furthermore, topical ocular administration of CQDSpds can induce the opening of the tight junction of corneal epithelial cells, thereby leading to great antibacterial treatment of S. aureus-induced BK in rabbits. Our results suggest that CQDSpds are a promising antibacterial candidate for clinical applications in treating eye-related bacterial infections and even persistent bacteria-induced infections.
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Affiliation(s)
- Hong-Jyuan Jian
- Institute of Biochemical and Biomedical Engineering, Chang Gung University , Taoyuan 33302, Taiwan
| | - Ren-Siang Wu
- Department of Bioscience and Biotechnology, National Taiwan Ocean University , Keelung 20224, Taiwan
| | - Tzu-Yu Lin
- Institute of Biochemical and Biomedical Engineering, Chang Gung University , Taoyuan 33302, Taiwan
| | - Yu-Jia Li
- Institute of Biochemical and Biomedical Engineering, Chang Gung University , Taoyuan 33302, Taiwan
| | - Han-Jia Lin
- Department of Bioscience and Biotechnology, National Taiwan Ocean University , Keelung 20224, Taiwan
| | - Scott G Harroun
- Department of Chemistry, Université de Montréal , Montréal, Québec H3C 3J7, Canada
| | - Jui-Yang Lai
- Institute of Biochemical and Biomedical Engineering, Chang Gung University , Taoyuan 33302, Taiwan
- Department of Ophthalmology, Chang Gung Memorial Hospital , Taoyuan 33305, Taiwan
- Department of Materials Engineering, Ming Chi University of Technology , New Taipei City 24301, Taiwan
| | - Chih-Ching Huang
- Department of Bioscience and Biotechnology, National Taiwan Ocean University , Keelung 20224, Taiwan
- Center of Excellence for the Oceans, National Taiwan Ocean University , Keelung 20224, Taiwan
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University , Kaohsiung 80708, Taiwan
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138
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Li F, Li T, Sun C, Xia J, Jiao Y, Xu H. Selenium‐Doped Carbon Quantum Dots for Free‐Radical Scavenging. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705989] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Feng Li
- Key Lab of Organic Optoelectronics & Molecular EngineeringDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Tianyu Li
- Key Lab of Organic Optoelectronics & Molecular EngineeringDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Chenxing Sun
- Key Lab of Organic Optoelectronics & Molecular EngineeringDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Jiahao Xia
- Key Lab of Organic Optoelectronics & Molecular EngineeringDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Yang Jiao
- Key Lab of Organic Optoelectronics & Molecular EngineeringDepartment of ChemistryTsinghua University Beijing 100084 China
| | - Huaping Xu
- Key Lab of Organic Optoelectronics & Molecular EngineeringDepartment of ChemistryTsinghua University Beijing 100084 China
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139
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Cho H, Jones MR, Nguyen SC, Hauwiller MR, Zettl A, Alivisatos AP. The Use of Graphene and Its Derivatives for Liquid-Phase Transmission Electron Microscopy of Radiation-Sensitive Specimens. NANO LETTERS 2017; 17:414-420. [PMID: 28026186 DOI: 10.1021/acs.nanolett.6b04383] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
One of the key challenges facing liquid-phase transmission electron microscopy (TEM) of biological specimens has been the damaging effects of electron beam irradiation. The strongly ionizing electron beam is known to induce radiolysis of surrounding water molecules, leading to the formation of reactive radical species. In this study, we employ DNA-assembled Au nanoparticle superlattices (DNA-AuNP superlattices) as a model system to demonstrate that graphene and its derivatives can be used to mitigate electron beam-induced damage. We can image DNA-AuNP superlattices in their native saline environment when the liquid cell window material is graphene, but not when it is silicon nitride. In the latter case, initial dissociation of assembled AuNPs was followed by their random aggregation and etching. Using graphene-coated silicon nitride windows, we were able to replicate the observation of stable DNA-AuNP superlattices achieved with graphene liquid cells. We then carried out a correlative Raman spectroscopy and TEM study to compare the effect of electron beam irradiation on graphene with and without the presence of water and found that graphene reacts with the products of water radiolysis. We attribute the protective effect of graphene to its ability to efficiently scavenge reactive radical species, especially the hydroxyl radicals which are known to cause DNA strand breaks. We confirmed this by showing that stable DNA-AuNP assemblies can be imaged in silicon nitride liquid cells when graphene oxide and graphene quantum dots, which have also recently been reported as efficient radical scavengers, are added directly to the solution. We anticipate that our study will open up more opportunities for studying biological specimens using liquid-phase TEM with the use of graphene and its derivatives as biocompatible radical scavengers to alleviate the effects of radiation damage.
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Affiliation(s)
- Hoduk Cho
- Department of Chemistry, University of California , Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Matthew R Jones
- Department of Chemistry, University of California , Berkeley, California 94720, United States
| | - Son C Nguyen
- Department of Chemistry, University of California , Berkeley, California 94720, United States
- The Hamburg Centre for Ultrafast Imaging, University of Hamburg , Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Matthew R Hauwiller
- Department of Chemistry, University of California , Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Alex Zettl
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
- Department of Physics, University of California , Berkeley, California 94720, United States
- Kavli Energy NanoScience Institute , Berkeley, California 94720, United States
| | - A Paul Alivisatos
- Department of Chemistry, University of California , Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
- Kavli Energy NanoScience Institute , Berkeley, California 94720, United States
- Department of Materials Science and Engineering, University of California , Berkeley, California 94720, United States
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140
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Zhou Y, Sun H, Wang F, Ren J, Qu X. How functional groups influence the ROS generation and cytotoxicity of graphene quantum dots. Chem Commun (Camb) 2017; 53:10588-10591. [DOI: 10.1039/c7cc04831a] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we selectively deactivate the ketonic carbonyl, carboxylic, or hydroxyl groups on GQDs and compare their ROS generation ability. The ROS generation ability of GQDs is closely related to these oxygen functional groups, especially for the ketonic carbonyl groups.
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Affiliation(s)
- Ya Zhou
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Hanjun Sun
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Faming Wang
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
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