101
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Goodman SM, Levy M, Li FF, Ding Y, Courtney CM, Chowdhury PP, Erbse A, Chatterjee A, Nagpal P. Designing Superoxide-Generating Quantum Dots for Selective Light-Activated Nanotherapy. Front Chem 2018; 6:46. [PMID: 29594097 PMCID: PMC5861142 DOI: 10.3389/fchem.2018.00046] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 02/19/2018] [Indexed: 12/25/2022] Open
Abstract
The rapid emergence of superbugs, or multi-drug resistant (MDR) organisms, has prompted a search for novel antibiotics, beyond traditional small-molecule therapies. Nanotherapeutics are being investigated as alternatives, and recently superoxide-generating quantum dots (QDs) have been shown as important candidates for selective light-activated therapy, while also potentiating existing antibiotics against MDR superbugs. Their therapeutic action is selective, can be tailored by simply changing their quantum-confined conduction-valence band (CB-VB) positions and alignment with different redox half-reactions-and hence their ability to generate specific radical species in biological media. Here, we show the design of superoxide-generating QDs using optimal QD material and size well-matched to superoxide redox potential, charged ligands to modulate their uptake in cells and selective redox interventions, and core/shell structures to improve their stability for therapeutic action. We show that cadmium telluride (CdTe) QDs with conduction band (CB) position at -0.5 V with respect to Normal Hydrogen Electron (NHE) and visible 2.4 eV bandgap generate a large flux of selective superoxide radicals, thereby demonstrating the effective light-activated therapy. Although the positively charged QDs demonstrate large cellular uptake, they bind indiscriminately to cell surfaces and cause non-selective cell death, while negatively charged and zwitterionic QD ligands reduce the uptake and allow selective therapeutic action via interaction with redox species. The stability of designed QDs in biologically-relevant media increases with the formation of core-shell QD structures, but an appropriate design of core-shell structures is needed to minimize any reduction in charge injection efficiency to adsorbed oxygen molecules (to form superoxide) and maintain similar quantitative generation of tailored redox species, as measured using electron paramagnetic resonance (EPR) spectroscopy and electrochemical impedance spectroscopy (EIS). Using these findings, we demonstrate the rational design of QDs as selective therapeutic to kill more than 99% of a priority class I pathogen, thus providing an effective therapy against MDR superbugs.
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Affiliation(s)
- Samuel M Goodman
- Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, United States.,Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO, United States
| | - Max Levy
- Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, United States.,Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO, United States
| | - Fei-Fei Li
- Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, United States.,Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO, United States
| | - Yuchen Ding
- Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO, United States.,Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO, United States
| | - Colleen M Courtney
- Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, United States
| | - Partha P Chowdhury
- Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, United States.,Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO, United States
| | - Annette Erbse
- Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO, United States
| | - Anushree Chatterjee
- Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, United States
| | - Prashant Nagpal
- Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, United States.,Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO, United States.,Materials Science and Engineering, University of Colorado Boulder, Boulder, CO, United States
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102
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Ma Y, Wang Q, Zhu Q, Liu M, Chen D, Han Z, Zhang C, Lv L, Gu Y. Dual fluorescence nanoconjugates for ratiometric detection of reactive oxygen species in inflammatory cells. JOURNAL OF BIOPHOTONICS 2018; 11:e201700015. [PMID: 28700134 DOI: 10.1002/jbio.201700015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 05/10/2017] [Accepted: 05/11/2017] [Indexed: 06/07/2023]
Abstract
Reactive oxygen species (ROS) are largely produced under pathological situations. To understand the etiology of disease, it is urgent to develop efficacious probes for detecting ROS. Herein, a novel nanoconjugate detection system constructed from gold clusters (AuNCs) and quantum dots (QDs) for fluorescence ratiometric-sensing ROS was reported. Upon interacting with ROS, the red emission fluorescence (645 nm from QDs) in the detection system gradually decreased, while the green fluorescence (480 nm from AuNCs) changed little. The fluorescence ratio at the 2 wavelengths (I480 nm /I645 nm ) was linearly correlated with the ROS, which could be used for the real-time ratiometric detection of ROS. The developed nanoconjugates could be applied to monitor the ROS in inflammatory cells for its ability of generating abundant ROS and uptaking ability to nanoparticles. The stimulated ROS in inflammatory cells were monitored by AuNC-QD and the results were consistent with the traditional 2', 7'-dichlorofluorescin diacetate method, confirming the reliability of the developed method. Featured with the merits of higher photostability, low background, high accuracy of ratiometric detection, the AuNC-QD conjugate demonstrated its potential to be the probe for real-time ROS detection in inflammatory cells.
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Affiliation(s)
- Yuxiang Ma
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Qian Wang
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Qiuyun Zhu
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Mengyang Liu
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Dan Chen
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Zhihao Han
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Congying Zhang
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Liwei Lv
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Yueqing Gu
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
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103
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Using of Quantum Dots in Biology and Medicine. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1048:323-334. [PMID: 29453547 DOI: 10.1007/978-3-319-72041-8_19] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Quantum dots are nanoparticles, which due to their unique physical and chemical (first of all optical) properties, are promising in biology and medicine. There are many ways for quantum dots synthesis, both in the form of nanoislands self-forming on the surfaces, which can be used as single-photon emitters in electronics for storing information, and in the form of colloidal quantum dots for diagnostic and therapeutic purposes in living systems. The paper describes the main methods of quantum dots synthesis and summarizes medical and biological ways of their use. The main emphasis is laid on the ways of quantum dots surface modification. Influence of the size and form of nanoparticles, charge on the surfaces of quantum dots, and cover type on the efficiency of internalization by cells and cell compartments is shown. The main mechanisms of penetration are considered.
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104
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Xiong H, Du S, Zhang P, Jiang Z, Zhou J, Yao J. Primary tumor and pre-metastatic niches co-targeting “peptides-lego” hybrid hydroxyapatite nanoparticles for metastatic breast cancer treatment. Biomater Sci 2018; 6:2591-2604. [DOI: 10.1039/c8bm00706c] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Hybrid hydroxyapatite nanoparticles orchestrating tumor metastasis resisting therapy (TMRT) and tumor metastasis targeting therapy (TMTT).
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Affiliation(s)
- Hui Xiong
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Druggability of Biopharmaceuticals
- Department of Pharmaceutics
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Shi Du
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Druggability of Biopharmaceuticals
- Department of Pharmaceutics
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Ping Zhang
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Druggability of Biopharmaceuticals
- Department of Pharmaceutics
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Zhijie Jiang
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Druggability of Biopharmaceuticals
- Department of Pharmaceutics
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Jianping Zhou
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Druggability of Biopharmaceuticals
- Department of Pharmaceutics
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Jing Yao
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Druggability of Biopharmaceuticals
- Department of Pharmaceutics
- China Pharmaceutical University
- Nanjing 210009
- China
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105
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Bencsik A, Lestaevel P, Guseva Canu I. Nano- and neurotoxicology: An emerging discipline. Prog Neurobiol 2018; 160:45-63. [DOI: 10.1016/j.pneurobio.2017.10.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 09/10/2017] [Accepted: 10/20/2017] [Indexed: 12/12/2022]
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106
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El-Said WA, Yoon J, Choi JW. Nanostructured surfaces for analysis of anticancer drug and cell diagnosis based on electrochemical and SERS tools. NANO CONVERGENCE 2018; 5:11. [PMID: 29721403 PMCID: PMC5913382 DOI: 10.1186/s40580-018-0143-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 04/12/2018] [Indexed: 05/22/2023]
Abstract
Discovering new anticancer drugs and screening their efficacy requires a huge amount of resources and time-consuming processes. The development of fast, sensitive, and nondestructive methods for the in vitro and in vivo detection of anticancer drugs' effects and action mechanisms have been done to reduce the time and resources required to discover new anticancer drugs. For the in vitro and in vivo detection of the efficiency, distribution, and action mechanism of anticancer drugs, the applications of electrochemical techniques such as electrochemical cell chips and optical techniques such as surface-enhanced Raman spectroscopy (SERS) have been developed based on the nanostructured surface. Research focused on electrochemical cell chips and the SERS technique have been reviewed here; electrochemical cell chips based on nanostructured surfaces have been developed for the in vitro detection of cell viability and the evaluation of the effects of anticancer drugs, which showed the high capability to evaluate the cytotoxic effects of several chemicals at low concentrations. SERS technique based on the nanostructured surface have been used as label-free, simple, and nondestructive techniques for the in vitro and in vivo monitoring of the distribution, mechanism, and metabolism of different anticancer drugs at the cellular level. The use of electrochemical cell chips and the SERS technique based on the nanostructured surface should be good tools to detect the effects and action mechanisms of anticancer drugs.
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Affiliation(s)
- Waleed A. El-Said
- Department of Chemical and Biomolecular Engineering, Sogang University, 35 Baekbeom-Ro, Mapo-Gu, Seoul, 04375 Republic of Korea
- Department of Chemistry, Faculty of Science, Assiut University, Assiut, 71516 Egypt
| | - Jinho Yoon
- Department of Chemical and Biomolecular Engineering, Sogang University, 35 Baekbeom-Ro, Mapo-Gu, Seoul, 04375 Republic of Korea
| | - Jeong-Woo Choi
- Department of Chemical and Biomolecular Engineering, Sogang University, 35 Baekbeom-Ro, Mapo-Gu, Seoul, 04375 Republic of Korea
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107
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Zheng W, Xu YM, Wu DD, Yao Y, Liang ZL, Tan HW, Lau ATY. Acute and chronic cadmium telluride quantum dots-exposed human bronchial epithelial cells: The effects of particle sizes on their cytotoxicity and carcinogenicity. Biochem Biophys Res Commun 2018; 495:899-903. [PMID: 29137979 DOI: 10.1016/j.bbrc.2017.11.074] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 11/10/2017] [Indexed: 02/05/2023]
Abstract
Quantum dots (QDs) are semiconducting nanocrystals with unique optical properties. When coated with shell/capping, QDs are not deleterious to cells and organisms. However, when QDs are retained in the cellular environment for a certain period of time, their coatings may be degraded, yielding "naked" QDs. Although some studies have documented the acute effects of cadmium telluride (CdTe) QDs in various cell lines, however, to our knowledge, there are no published studies on the chronic effects of CdTe QDs in normal lung cells. In this study, we therefore sought to study the effects of CdTe QDs of various particle sizes on their cytotoxicity and carcinogenicity in normal human bronchial epithelial cells (BEAS-2B). A total of three particle sizes of CdTe QD with emission maximum at 520, 580, and 730 nm were employed (abbreviated as 520Q, 580Q, and 730Q, respectively). Our results indicated that acute exposure to 520Q (∼2.04 nm in diameter) and 580Q (∼3.24 nm in diameter) elicited dose-dependent cytotoxicity; while acute exposure to 730Q (∼5.40 nm in diameter) elicited negligible cytotoxicity in BEAS-2B cells. Notably, chronic exposure to CdTe QD of all three tested particle sizes induced BEAS-2B cell transformation as evidenced by enhanced cell migration and anchorage-independent growth on soft agar. Taken together, our findings suggest that CdTe QDs are potent human lung carcinogens.
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Affiliation(s)
- Wei Zheng
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, People's Republic of China
| | - Yan-Ming Xu
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, People's Republic of China
| | - Dan-Dan Wu
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, People's Republic of China; Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands; GRIAC Research Institute, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Yue Yao
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, People's Republic of China
| | - Zhan-Ling Liang
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, People's Republic of China
| | - Heng Wee Tan
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, People's Republic of China
| | - Andy T Y Lau
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, People's Republic of China.
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108
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De Leo V, Milano F, Paiano A, Bramato R, Giotta L, Comparelli R, Ruscigno S, Agostiano A, Bucci C, Catucci L. Luminescent CdSe@ZnS nanocrystals embedded in liposomes: a cytotoxicity study in HeLa cells. Toxicol Res (Camb) 2017; 6:947-957. [PMID: 30090555 PMCID: PMC6062261 DOI: 10.1039/c7tx00172j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 09/14/2017] [Indexed: 11/21/2022] Open
Abstract
The use of fluorescent nanocrystals (NCs) as probes for bioimaging applications has emerged as an advantageous alternative to conventional organic fluorescent dyes. Therefore their toxicological evaluation and intracellular delivery are currently a primary field of research. In this work, hydrophobic and highly fluorescent CdSe@ZnS NCs were encapsulated into the lipid bilayer of liposomes by the micelle-to-vesicle transition (MVT) method. The obtained aqueous NC-liposome suspensions preserved the spectroscopic characteristics of the native NCs. A systematic study of the in vitro toxicological effect on HeLa cells of these red emitting NC-liposomes was then carried out and compared to that of empty liposomes. By using liposomes of different phospholipid composition, we evaluated the effect of the lipid carrier on the cytotoxicity towards HeLa cells. Surprisingly, a cell proliferation and death study along with the MTT test on HeLa cells treated with NC-liposomes have shown that the toxic effects of NCs, at concentrations up to 20 nM, are negligible compared to those of the lipid carrier, especially when this is constituted by the cationic phospholipid DOTAP. In particular, obtained data suggest that DOTAP has a dose- and time-dependent toxic effect on HeLa cells. In contrast, the addition of PEG to the liposomes does not alter significantly the viability of the cells. In addition, the ability of NC-liposomes to penetrate the HeLa cells was assessed by fluorescence and confocal microscopy investigation. Captured images show that NC-liposomes are internalized into cells through the endocytic pathway, enter early endosomes and reach lysosomes in 1 h. Interestingly, red emitting NCs co-localized with endosomes and were positioned at the limiting membrane of the organelles. The overall results suggest that the fluorescent system as a whole, NCs and their carrier, should be considered for the development of fully safe biological applications of CdSe@ZnS NCs, and provide essential indications to define the optimal experimental conditions to use the proposed system as an optical probe for future in vivo experiments.
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Affiliation(s)
- Vincenzo De Leo
- Chemistry Department , University of Bari "Aldo Moro" , Via Orabona 4 , 70125 Bari , Italy .
- CNR-IPCF , Institute for Chemical and Physical processes , Via Orabona 4 , 70125 Bari , Italy
| | - Francesco Milano
- CNR-IPCF , Institute for Chemical and Physical processes , Via Orabona 4 , 70125 Bari , Italy
| | - Aurora Paiano
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA) , University of Salento , Via Provinciale Lecce-Monteroni n. 165 , 73100 Lecce , Italy .
| | - Roberta Bramato
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA) , University of Salento , Via Provinciale Lecce-Monteroni n. 165 , 73100 Lecce , Italy .
| | - Livia Giotta
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA) , University of Salento , Via Provinciale Lecce-Monteroni n. 165 , 73100 Lecce , Italy .
| | - Roberto Comparelli
- CNR-IPCF , Institute for Chemical and Physical processes , Via Orabona 4 , 70125 Bari , Italy
| | - Silvia Ruscigno
- Chemistry Department , University of Bari "Aldo Moro" , Via Orabona 4 , 70125 Bari , Italy .
| | - Angela Agostiano
- Chemistry Department , University of Bari "Aldo Moro" , Via Orabona 4 , 70125 Bari , Italy .
- CNR-IPCF , Institute for Chemical and Physical processes , Via Orabona 4 , 70125 Bari , Italy
| | - Cecilia Bucci
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA) , University of Salento , Via Provinciale Lecce-Monteroni n. 165 , 73100 Lecce , Italy .
| | - Lucia Catucci
- Chemistry Department , University of Bari "Aldo Moro" , Via Orabona 4 , 70125 Bari , Italy .
- CNR-IPCF , Institute for Chemical and Physical processes , Via Orabona 4 , 70125 Bari , Italy
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109
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Nanda SS, Kim MJ, Kim K, Papaefthymiou GC, Selvan ST, Yi DK. Recent advances in biocompatible semiconductor nanocrystals for immunobiological applications. Colloids Surf B Biointerfaces 2017; 159:644-654. [DOI: 10.1016/j.colsurfb.2017.08.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 08/15/2017] [Accepted: 08/17/2017] [Indexed: 12/30/2022]
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110
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Ansar S, Alshehri SM, Abudawood M, Hamed SS, Ahamad T. Antioxidant and hepatoprotective role of selenium against silver nanoparticles. Int J Nanomedicine 2017; 12:7789-7797. [PMID: 29123393 PMCID: PMC5661492 DOI: 10.2147/ijn.s136748] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Silver nanoparticles (AgNPs) have attracted the most interest in terms of their potential biomedical and industrial applications. However, these nanoparticles have shown their toxic behavior toward environment, living tissues, and organisms. Selenium (Se), an essential trace element, is necessary for various metabolic processes, including protection against oxidative stress and immune function. The present study was undertaken to evaluate the effect of Se against AgNP-induced hepatic oxidative stress. AgNPs were synthesized and then prepared nanoparticles were characterized using various analytical techniques such as UV-visible spectroscopy, X-ray diffraction, and transmission electron microscopy. Rats were administered AgNPs intraperitoneally (5 mg/kg/day) and Se (0.2 mg/kg) was given by gavage. AgNP administration induced hepatic damage as indicated by the serum marker enzymes with reduction in levels of glutathione, and decrease in activities of SOD, CAT, and GSH-peroxidase (P<0.05). Decrease in levels of total antioxidant capacity (TAC) and increase in level of C-reactive protein (CRP) was also observed in AgNP-treated group compared to control group. However, Se markedly attenuated AgNP-induced biochemical alterations, levels of TAC, CRP, and serum transaminases (AST, ALT) (P<0.05). Taken together, these findings suggest that administration of AgNPs produces hepatotoxicity in rats, whereas Se supplementation attenuates these effects.
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Affiliation(s)
- Sabah Ansar
- Clinical Laboratory Sciences, Applied Medical Science, King Saud University, Riyadh, Saudi Arabia
| | - Saad M Alshehri
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Manal Abudawood
- Clinical Laboratory Sciences, Applied Medical Science, King Saud University, Riyadh, Saudi Arabia
| | - Sherifa S Hamed
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia.,Zoology Department, Faculty of Science, University of Alexandria, Moharram Bey, Alexandria, Egypt
| | - Tansir Ahamad
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
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111
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Adverse effect of CdTe quantum dots on the cell membrane of Bacillus subtilis : Insight from microscopy. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.nanoso.2017.08.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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112
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Shan W, Cui Y, Liu M, Wu L, Xiang Y, Guo Q, Zhang Z, Huang Y. Systematic evaluation of the toxicity and biodistribution of virus mimicking mucus-penetrating DLPC-NPs as oral drug delivery system. Int J Pharm 2017; 530:89-98. [DOI: 10.1016/j.ijpharm.2017.07.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 07/14/2017] [Accepted: 07/20/2017] [Indexed: 10/19/2022]
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113
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Liu F, Ye W, Wang J, Song F, Cheng Y, Zhang B. Parallel comparative studies on toxicity of quantum dots synthesized and surface engineered with different methods in vitro and in vivo. Int J Nanomedicine 2017; 12:5135-5148. [PMID: 28790821 PMCID: PMC5529378 DOI: 10.2147/ijn.s137637] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Quantum dots (QDs) have been considered to be promising probes for biosensing, bioimaging, and diagnosis. However, their toxicity issues caused by heavy metals in QDs remain to be addressed, in particular for their in vivo biomedical applications. In this study, a parallel comparative investigation in vitro and in vivo is presented to disclose the impact of synthetic methods and their following surface modifications on the toxicity of QDs. Cellular assays after exposure to QDs were conducted including cell viability assessment, DNA breakage study in a single cellular level, intracellular reactive oxygen species (ROS) receptor measurement, and transmission electron microscopy to evaluate their toxicity in vitro. Mice experiments after QD administration, including analysis of hemobiological indices, pharmacokinetics, histological examination, and body weight, were further carried out to evaluate their systematic toxicity in vivo. Results show that QDs fabricated by the thermal decomposition approach in organic phase and encapsulated by an amphiphilic polymer (denoted as QDs-1) present the least toxicity in acute damage, compared with those of QDs surface engineered by glutathione-mediated ligand exchange (denoted as QDs-2), and the ones prepared by coprecipitation approach in aqueous phase with mercaptopropionic acid capped (denoted as QDs-3). With the extension of the investigation time of mice respectively injected with QDs, we found that the damage caused by QDs to the organs can be gradually recovered. This parallel comparative investigation suggests that synthetic methods and their resulting surface microenvironment play vital roles in the acute toxicity profiles of QDs. The present study provides updated insights into the fabrication and surface engineering of QDs for their translational applications in theranostics.
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Affiliation(s)
- Fengjun Liu
- Department of Radiology, Shanghai Public Health Clinical Center
| | - Wen Ye
- Department of Radiology, Shanghai Public Health Clinical Center
| | - Jun Wang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine
| | - Fengxiang Song
- Department of Radiology, Shanghai Public Health Clinical Center
| | - Yingsheng Cheng
- Department of Radiology, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Bingbo Zhang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine
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114
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Smolkova B, Dusinska M, Gabelova A. Nanomedicine and epigenome. Possible health risks. Food Chem Toxicol 2017; 109:780-796. [PMID: 28705729 DOI: 10.1016/j.fct.2017.07.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 07/08/2017] [Indexed: 02/07/2023]
Abstract
Nanomedicine is an emerging field that combines knowledge of nanotechnology and material science with pharmaceutical and biomedical sciences, aiming to develop nanodrugs with increased efficacy and safety. Compared to conventional therapeutics, nanodrugs manifest higher stability and circulation time, reduced toxicity and improved targeted delivery. Despite the obvious benefit, the accumulation of imaging agents and nanocarriers in the body following their therapeutic or diagnostic application generates concerns about their safety for human health. Numerous toxicology studies have demonstrated that exposure to nanomaterials (NMs) might pose serious risks to humans. Epigenetic modifications, representing a non-genotoxic mechanism of toxicant-induced health effects, are becoming recognized as playing a potential causative role in the aetiology of many diseases including cancer. This review i) provides an overview of recent advances in medical applications of NMs and ii) summarizes current evidence on their possible epigenetic toxicity. To discern potential health risks of NMs, since current data are mostly based upon in vitro and animal models, a better understanding of functional relationships between NM exposure, epigenetic deregulation and phenotype is required.
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Affiliation(s)
- Bozena Smolkova
- Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, 845 05 Bratislava, Slovakia.
| | - Maria Dusinska
- Health Effects Laboratory MILK, NILU- Norwegian Institute for Air Research, 2007 Kjeller, Norway
| | - Alena Gabelova
- Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, 845 05 Bratislava, Slovakia
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115
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Viswanath B, Kim S. Influence of Nanotoxicity on Human Health and Environment: The Alternative Strategies. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2017; 242:61-104. [PMID: 27718008 DOI: 10.1007/398_2016_12] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Currently, nanotechnology revolutionizing both scientific and industrial community due to their applications in the fields of medicine, environmental protection, energy, and space exploration. Despite of the evident benefits of nanoparticles, there are still open questions about the influence of these nanoparticles on human health and environment. This is one of the critical issues that have to be addressed in the near future, before massive production of nanomaterials. Manufactured nanoparticles, which are finding ever-increasing applications in industry and consumer products fall into the category of emerging contaminants with ecological and toxicological effects on populations, communities and ecosystems. The existing experimental knowledge gave evidence that inhaled nanoparticles are less efficiently separated than larger particles by the macrophage clearance mechanisms and these nanoparticles are known to translocate through the lymphatic, circulatory and nervous systems to many tissues and organs, including the brain. In this review we highlight adverse impacts of nanoparticles on human and the environment with special emphasis on green nanoscience as a sustainable alternative.
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Affiliation(s)
- Buddolla Viswanath
- Department of Bionanotechnology, Gachon University, San 65, Bokjeong-Dong, Sujeong-Gu, Seongnam-Si, Gyeonggi-Do, 461-701, Republic of Korea
| | - Sanghyo Kim
- Department of Bionanotechnology, Gachon University, San 65, Bokjeong-Dong, Sujeong-Gu, Seongnam-Si, Gyeonggi-Do, 461-701, Republic of Korea.
- Gil Medical Center, Graduate Gachon Medical Research Institute, Incheon, 405-760, Republic of Korea.
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116
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Zhang M, Wei X, Ding L, Hu J, Jiang W. Adhesion of CdTe quantum dots on model membranes and internalization into RBL-2H3 cells. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 225:419-427. [PMID: 28284550 DOI: 10.1016/j.envpol.2017.03.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 02/27/2017] [Accepted: 03/01/2017] [Indexed: 06/06/2023]
Abstract
Quantum dots (QDs) have attracted broad attention due to their special optical properties and promising prospect in medical and biological applications. However, the process of QDs on cell membrane is worth further investigations because such process may lead to harmful effects on organisms and also important for QD application. In this study, adhesion of amino- and carboxyl-coated CdTe QDs (A-QDs and C-QDs) on cell membrane and the subsequent internalization are studied using a series of endocytosis-free model membranes, including giant and small unilamellar vesicles, supported lipid bilayers and giant plasma membrane vesicles (GPMVs). The adhered QD amounts on model membranes are quantified by a quartz crystal microbalance. The CdTe QD adhesion on model membranes is governed by electrostatic forces. Positively charged A-QDs adhere on GPMV surface and passively penetrate the plasma membrane via endocytosis-free mechanism, but negatively charged C-QDs cannot. Rat basophilic leukemia (RBL-2H3) cells are exposed to CdTe QDs to monitor the QD internalization process. Both A- and C-QDs are internalized by RBL-2H3 cells mainly via endocytosis. CdTe QDs do not accumulate on the plasma membrane of living cells due to the fast endocytosis and the weakened electrostatic attraction in biological medium, resulting in low chance of passive penetration. The suspended cells after trypsin digestion take more QDs than the adherent cells. A-QDs cause lower cell viability than C-QDs, probably because the approach of positively charged QDs to cells is favored and the smaller aggregates of A-QDs.
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Affiliation(s)
- Mengmeng Zhang
- Environment Research Institute, Shandong University, Jinan, 250100, China
| | - Xiaoran Wei
- Environment Research Institute, Shandong University, Jinan, 250100, China
| | - Lei Ding
- Environment Research Institute, Shandong University, Jinan, 250100, China
| | - Jingtian Hu
- Environment Research Institute, Shandong University, Jinan, 250100, China
| | - Wei Jiang
- Environment Research Institute, Shandong University, Jinan, 250100, China.
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117
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Recent advances in optical properties and applications of colloidal quantum dots under two-photon excitation. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.02.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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118
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Rasekh M, Ahmad Z, Cross R, Hernández-Gil J, Wilton-Ely JDET, Miller PW. Facile Preparation of Drug-Loaded Tristearin Encapsulated Superparamagnetic Iron Oxide Nanoparticles Using Coaxial Electrospray Processing. Mol Pharm 2017; 14:2010-2023. [DOI: 10.1021/acs.molpharmaceut.7b00109] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Manoochehr Rasekh
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K
| | - Zeeshan Ahmad
- Leicester School of Pharmacy, De Montfort University, Leicester LE1 9BH, U.K
| | - Richard Cross
- Emerging Technologies Research Centre, De Montfort University, Leicester LE1 9BH, U.K
| | - Javier Hernández-Gil
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K
| | | | - Philip W. Miller
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K
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119
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Hayashi K, Sato Y, Maruoka H, Sakamoto W, Yogo T. Organic–Inorganic Hybrid Nanoparticles for Tracking the Same Cells Seamlessly at the Cellular, Tissue, and Whole Body Levels. ACS Biomater Sci Eng 2017; 3:1129-1135. [DOI: 10.1021/acsbiomaterials.7b00181] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Koichiro Hayashi
- Division
of Materials Research, Institute of Materials and Systems for Sustainability, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yusuke Sato
- Division
of Materials Research, Institute of Materials and Systems for Sustainability, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Hiroki Maruoka
- Technical
Research Laboratory Applied Development Group, Kurabo Industries Ltd., 14-30, Shimokido-Cho, Neyagawa, Osaka 572-0823, Japan
| | - Wataru Sakamoto
- Division
of Materials Research, Institute of Materials and Systems for Sustainability, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Toshinobu Yogo
- Division
of Materials Research, Institute of Materials and Systems for Sustainability, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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120
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Cadmium-containing quantum dots: properties, applications, and toxicity. Appl Microbiol Biotechnol 2017; 101:2713-2733. [PMID: 28251268 DOI: 10.1007/s00253-017-8140-9] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 01/18/2017] [Accepted: 01/20/2017] [Indexed: 01/20/2023]
Abstract
The marriage of biology with nanomaterials has significantly accelerated advancement of biological techniques, profoundly facilitating practical applications in biomedical fields. With unique optical properties (e.g., tunable broad excitation, narrow emission spectra, robust photostability, and high quantum yield), fluorescent quantum dots (QDs) have been reasonably functionalized with controllable interfaces and extensively used as a new class of optical probe in biological researches. In this review, we summarize the recent progress in synthesis and properties of QDs. Moreover, we provide an overview of the outstanding potential of QDs for biomedical research and innovative methods of drug delivery. Specifically, the applications of QDs as novel fluorescent nanomaterials for biomedical sensing and imaging have been detailedly highlighted and discussed. In addition, recent concerns on potential toxicity of QDs are also introduced, ranging from cell researches to animal models.
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121
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Wu J, Jiang K, Wang X, Wang C, Zhang C. On−off−on gold nanocluster-based near infrared fluorescent probe for recognition of Cu(II) and vitamin C. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2111-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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122
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O’Hara T, Seddon B, O’Connor A, McClean S, Singh B, Iwuoha E, Fuku X, Dempsey E. Quantum Dot Nanotoxicity Investigations Using Human Lung Cells and TOXOR Electrochemical Enzyme Assay Methodology. ACS Sens 2017; 2:165-171. [PMID: 28722443 DOI: 10.1021/acssensors.6b00673] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Recent studies have suggested that certain nanomaterials can interfere with optically based cytotoxicity assays resulting in underestimations of nanomaterial toxicity. As a result there has been growing interest in the use of whole cell electrochemical biosensors for nanotoxicity applications. Herein we report application of an electrochemical cytotoxicity assay developed in house (TOXOR) in the evaluation of toxic effects of mercaptosuccinic acid capped cadmium telluride quantum dots (MSA capped CdTe QDs), toward mammalian cells. MSA capped CdTe QDs were synthesized, characterized, and their cytotoxicity toward A549 human lung epithelial cells investigated. The internalization of QDs within cells was scrutinized via confocal microscopy. The cytotoxicity assay is based on the measurement of changes in cellular enzyme acid phosphatase upon 24 h exposure to QDs. Acid phosphatase catalyzes dephosphorylation of 2-naphthyl phosphate to 2-naphthol (determined by chronocoulometry) and is indicative of metabolic activity in cells. The 24 h IC50 (concentration resulting in 50% reduction in acid phosphatase activity) value for MSA capped CdTe QDs was found to be 118 ± 49 μg/mL using the TOXOR assay and was in agreement with the MTT assay (157 ± 31 μg/mL). Potential uses of this electrochemical assay include the screening of nanomaterials, environmental toxins, in addition to applications in the pharmaceutical, food, and health sectors.
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Affiliation(s)
| | | | | | | | | | - Emmanuel Iwuoha
- SensorLab,
Department of Chemistry, University of the Western Cape, Private Bag
X17, Bellville, 7535, South Africa
| | - Xolile Fuku
- SensorLab,
Department of Chemistry, University of the Western Cape, Private Bag
X17, Bellville, 7535, South Africa
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123
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Peynshaert K, Soenen SJ, Manshian BB, Doak SH, Braeckmans K, De Smedt SC, Remaut K. Coating of Quantum Dots strongly defines their effect on lysosomal health and autophagy. Acta Biomater 2017; 48:195-205. [PMID: 27765679 DOI: 10.1016/j.actbio.2016.10.022] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 09/24/2016] [Accepted: 10/15/2016] [Indexed: 02/06/2023]
Abstract
In the last decade the interest in autophagy got an incredible boost and the phenomenon quickly turned into an extensive research field. Interestingly, dysfunction of this cytoplasmic clearance system has been proposed to lie at the root of multiple diseases including cancer. We therefore consider it crucial from a toxicological point of view to investigate if nanomaterials that are developed for biomedical applications interfere with this cellular process. Here, we study the highly promising 'gradient alloyed' Quantum Dots (QDs) that differ from conventional ones by their gradient core composition which allows for better fluorescent properties. We carefully examined the toxicity of two identical gradient alloyed QDs, differing only in their surface coatings, namely 3-mercaptopropionic (MPA) acid and polyethylene glycol (PEG). Next to more conventional toxicological endpoints like cytotoxicity and oxidative stress, we examined the influence of these QDs on the autophagy pathway. Our study shows that the cellular effects induced by QDs on HeLa cells were strongly dictated by the surface coat of the otherwise identical particles. MPA-coated QDs proved to be highly biocompatible as a result of lysosomal activation and ROS reduction, two cellular responses that help the cell to cope with nanomaterial-induced stress. In contrast, PEGylated QDs were significantly more toxic due to increased ROS production and lysosomal impairment. This impairment next results in autophagy dysfunction which likely adds to their toxic effects. Taken together, our study shows that coating QDs with MPA is a better strategy than PEGylation for long term cell tracking with minimal cytotoxicity. STATEMENT OF SIGNIFICANCE Gradient alloyed Quantum Dots (GA-QDs) are highly promising nanomaterials for biomedical imaging seeing they exhibit supremely fluorescent properties over conventional QDs. The translation of these novel QDs to the clinic requires a detailed toxicological examination, though the data on this is very limited. We therefore applied a systematic approach to examine the toxicity of GA-QDs coated with two commonly applied surface ligands, this while focusing on the autophagy pathway. The impact of QDs on this pathway is of importance since it has been connected with various diseases, including cancer. Our data accentuates that the coating defines the impact on autophagy and therefore the toxicity induced by QDs on cells: while MPA coated QDs were highly biocompatible, PEGylated QDs were toxic.
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124
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125
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Liu X, Zhou P, Zhan H, Liu H, Zhang J, Zhao Y. Synthesis and characterization of near-infrared-emitting CdHgTe/CdS/ZnS quantum dots capped by N-acetyl-l-cysteine for in vitro and in vivo imaging. RSC Adv 2017. [DOI: 10.1039/c7ra02403g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this article, highly photoluminescent near-infrared (NIR)-emitting quantum dots (QDs) were directly synthesized in water by a fast, inexpensive and facile method.
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Affiliation(s)
- Xijing Liu
- School of Resource and Environmental Science
- Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory
- Wuhan University
- Wuhan 430079
- China
| | - Peijiang Zhou
- School of Resource and Environmental Science
- Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory
- Wuhan University
- Wuhan 430079
- China
| | - Hongju Zhan
- Jingchu University of Technology
- Jingmen 448000
- China
| | - Hongyu Liu
- School of Resource and Environmental Science
- Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory
- Wuhan University
- Wuhan 430079
- China
| | - Jianwei Zhang
- School of Resource and Environmental Science
- Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory
- Wuhan University
- Wuhan 430079
- China
| | - Yanan Zhao
- Department of Biomedical Engineering
- School of Basic Medical Sciences
- Wuhan University
- Wuhan 430071
- China
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126
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Wu Y, Zhou B, Xu F, Wang X, Liu G, Zheng L, Zhao J, Zhang X. Functional quantum dot-siRNA nanoplexes to regulate chondrogenic differentiation of mesenchymal stem cells. Acta Biomater 2016; 46:165-176. [PMID: 27615736 DOI: 10.1016/j.actbio.2016.09.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 09/02/2016] [Accepted: 09/07/2016] [Indexed: 10/21/2022]
Abstract
SOX9 plays an important role in mesenchymal condensations during the early development of embryonic skeletons. However, its function in the chondrogenic differentiation of adult mesenchymal stem cells (MSCs) has not been fully investigated because SOX9 RNA interference in adult MSCs has seldom been studied. This study used SOX9 gene as the target gene and the quantum dot (QD)-based nanomaterial QD-NH2 (ZnS shell and poly-ethylene glycol (PEG) coating) with a fluorescent tracer function as the gene carrier to transfect siSOX9 into MSCs after sulfosuccinimidyl-4-(N-maleimidomethyl) cyclohexane-1-carboxylate (sulfo-SMCC) activation in vitro and in vivo. The results showed that QD-SMCC could effectively bind and deliver siRNAs into the MSCs, followed by efficient siRNA escape from the endosomes. The siRNAs released from QD-SMCC retained their structural integrity and could effectively inhibit the targeted gene expression, leading to reduced chondrogenic differentiation of MSCs and delayed cartilage repair. QDs were excreted from living cells instead of dead cells, and the ZnS shell and PEG coating layer greatly reduced the cytotoxicity of the QDs. The transfection efficiency of QD-SMCC was superior to that of polyethylenimine (PEI). In addition, QD-SMCC has an intrinsic signal for noninvasive imaging of siRNA transport. The results indicate that SOX9 is imperative for the chondrogenesis of MSCs and QD-SMCC has great potential for real-time tracking of transfection. STATEMENT OF SIGNIFICANCE In this study, we developed functional quantum dot (QD) nanoplexes by sulfosuccinimidyl-4-(N-maleimidomethyl) cyclohexane-1-carboxylate (sulfo-SMCC) activation of PEG-coated CdSe/ZnS QDs as the gene carrier of siRNA to study the effect of SOX9 RNA interference on the chondrogenic differentiation of MSCs. This study confirmed the importance of SOX9 in chondrogenesis, as evidenced by the findings that SOX9 knockdown significantly inhibited the expression of cartilage-specific markers including acan and col2a1 in MSCs and further delayed cartilage repair. Moreover, QD-SMCC has an intrinsic signal for noninvasive imaging of siRNA transport. The results indicate that SOX9 is imperative for the chondrogenesis of MSCs and QD-SMCC has great potential for real-time tracking of transfection.
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127
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Synthesis, characterization and evaluation of in vitro toxicity in hepatocytes of linear polyesters with varied aromatic and aliphatic co-monomers. J Control Release 2016; 244:214-228. [DOI: 10.1016/j.jconrel.2016.08.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Revised: 07/27/2016] [Accepted: 08/03/2016] [Indexed: 01/25/2023]
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128
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Yokel RA. Physicochemical properties of engineered nanomaterials that influence their nervous system distribution and effects. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 12:2081-2093. [DOI: 10.1016/j.nano.2016.05.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Revised: 05/06/2016] [Accepted: 05/10/2016] [Indexed: 10/21/2022]
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129
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Quantum Dot-Based Nanotools for Bioimaging, Diagnostics, and Drug Delivery. Chembiochem 2016; 17:2103-2114. [DOI: 10.1002/cbic.201600357] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Indexed: 12/12/2022]
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130
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Gladkovskaya O, Gun'ko YK, O'Connor GM, Gogvadze V, Rochev Y. In one harness: the interplay of cellular responses and subsequent cell fate after quantum dot uptake. Nanomedicine (Lond) 2016; 11:2603-15. [PMID: 27618947 DOI: 10.2217/nnm-2016-0068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Rapid growth and expansion of engineered nanomaterials will occur when the technology can be used safely. Quantum dots have excellent prospects in clinical applications, but the issue of toxicity has not yet been resolved. To enable their medical implementation, the effect on, and mechanisms in, live cells should be clearly known and predicted. A massive amount of experimental data dedicated to nanotoxicity has been accumulated to-date, but it lacks a logical structure. The current challenge is to organize existing knowledge into lucid biological and mathematical models. In our review we aim to describe the interplay of various cell death mechanisms triggered by quantum dots as a consequence of particle parameters and experimental conditions.
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Affiliation(s)
- Olga Gladkovskaya
- KAUST Catalysis Centre, King Abdullah University of Science & Technology, Thuwal Jeddah 23955-6900, Kingdom of Saudi Arabia.,School of Physics, National University of Ireland, Galway, Ireland.,CÚRAM - Centre for Research in Medical Devices, Galway, Ireland
| | - Yuri K Gun'ko
- CRANN & School of Chemistry, Trinity College Dublin, Ireland.,ITMO University, 197101 Saint Petersburg, Russia
| | | | - Vladimir Gogvadze
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, 171 77 Stockholm, Sweden.,MV Lomonosov Moscow State University, 119991 Moscow, Russia.,Institute of Theoretical & Experimental Biophysics, Pushchino, 142290 Russia
| | - Yury Rochev
- CÚRAM - Centre for Research in Medical Devices, Galway, Ireland.,School of Chemistry, National University of Ireland, Galway, Ireland.,Sechenov First Moscow State Medical University, Institute for Regenerative Medicine
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131
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132
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Cepeda-Pérez E, Aguilar-Hernández I, López-Luke T, Piazza V, Carriles R, Ornelas-Soto N, de la Rosa E. Interaction of TGA@CdTe Quantum Dots with an Extracellular Matrix of Haematococcus pluvialis Microalgae Detected Using Surface-Enhanced Raman Spectroscopy (SERS). APPLIED SPECTROSCOPY 2016; 70:1561-1572. [PMID: 27381350 DOI: 10.1177/0003702816654076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 12/07/2015] [Indexed: 06/06/2023]
Abstract
The present study reports the localization and interaction of thioglycolic acid (TGA) capped CdTe quantum dots (TGA@CdTe QDs) within the extracellular matrix (ECM) of Haematococcus pluvialis (Chlorophyceae) microalgae (HPM) after an incubation period of 5 min. Changes in the Raman spectrum of HPM induced by the adsorption of the TGA@CdTe QDs are successfully found by using naked gold anisotropic structures as nano-sensors for surface-enhanced Raman scattering (SERS effect). Raman spectroscopy results show that TGA@CdTe QDs interact with the biomolecules present in the ECM. Sample preparation and characterization by complementary techniques such as confocal and electron microscopy are also used to confirm the presence and localization of the nanoparticles in the algae. This research shows new evidence on early accumulation of QDs in plant cells and would further improve our understanding about their environmental impact.
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Affiliation(s)
| | - Iris Aguilar-Hernández
- Laboratorio de Nanotecnología Ambiental, Centro del Agua para América Latina y el Caribe, Tecnológico de Monterrey, Monterrey, México
| | | | | | | | - Nancy Ornelas-Soto
- Laboratorio de Nanotecnología Ambiental, Centro del Agua para América Latina y el Caribe, Tecnológico de Monterrey, Monterrey, México
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133
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Grabowska-Jadach I, Drozd M, Biegala J, Pietrzak M, Mazurkiewicz-Pawlicka M, Parzuchowski PG, Brzózka Z. Studies on influence of polymer modifiers for fluorescent nanocrystals’ cytotoxicity. J Pharm Biomed Anal 2016; 127:193-201. [DOI: 10.1016/j.jpba.2016.02.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 02/12/2016] [Accepted: 02/28/2016] [Indexed: 12/23/2022]
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134
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Fan J, Shao M, Lai L, Liu Y, Xie Z. Inhibition of autophagy contributes to the toxicity of cadmium telluride quantum dots in Saccharomyces cerevisiae. Int J Nanomedicine 2016; 11:3371-83. [PMID: 27524895 PMCID: PMC4966502 DOI: 10.2147/ijn.s108636] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Cadmium telluride quantum dots (CdTe QDs) are used as near-infrared probes in biologic and medical applications, but their cytological effects and mechanism of potential toxicity are still unclear. In this study, we evaluated the toxicity of CdTe QDs of different sizes and investigated their mechanism of toxicity in the yeast Saccharomyces cerevisiae. A growth inhibition assay revealed that orange-emitting CdTe (O-CdTe) QDs (half inhibitory concentration [IC50] =59.44±12.02 nmol/L) were more toxic than green-emitting CdTe QDs (IC50 =186.61±19.74 nmol/L) to S. cerevisiae. Further studies on toxicity mechanisms using a transmission electron microscope and green fluorescent protein tagged Atg8 processing assay revealed that O-CdTe QDs could partially inhibit autophagy at a late stage, which differs from the results reported in mammalian cells. Moreover, autophagy inhibited at a late stage by O-CdTe QDs could be partially recovered by enhancing autophagy with rapamycin (an autophagy activator), combined with an increased number of living cells. These results indicate that inhibition of autophagy acts as a toxicity mechanism of CdTe QDs in S. cerevisiae. This work reports a novel toxicity mechanism of CdTe QDs in yeast and provides valuable information on the effect of CdTe QDs on the processes of living cells.
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Affiliation(s)
- Junpeng Fan
- College of Life Sciences, Wuhan University; Hubei Provincial Cooperative Innovation Center of Industrial Fermentation; State Key Laboratory of Virology; Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE)
| | - Ming Shao
- College of Life Sciences, Wuhan University; Hubei Provincial Cooperative Innovation Center of Industrial Fermentation; State Key Laboratory of Virology; Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE)
| | - Lu Lai
- State Key Laboratory of Virology; Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE); College of Chemistry and Molecular Sciences, Wuhan University, Wuhan
| | - Yi Liu
- State Key Laboratory of Virology; Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE); College of Chemistry and Molecular Sciences, Wuhan University, Wuhan
| | - Zhixiong Xie
- College of Life Sciences, Wuhan University; Hubei Provincial Cooperative Innovation Center of Industrial Fermentation; State Key Laboratory of Virology; Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE); School of Life Science and Technology, Hubei Engineering University, Xiaogan, People's Republic of China
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135
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Silva BF, Andreani T, Gavina A, Vieira MN, Pereira CM, Rocha-Santos T, Pereira R. Toxicological impact of cadmium-based quantum dots towards aquatic biota: Effect of natural sunlight exposure. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2016; 176:197-207. [PMID: 27162069 DOI: 10.1016/j.aquatox.2016.05.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 04/21/2016] [Accepted: 05/02/2016] [Indexed: 06/05/2023]
Abstract
Cadmium-based quantum dots (QDs) are increasingly applied in existent and emerging technologies, especially in biological applications due to their exceptional photophysical and functionalization properties. However, they are very toxic compounds due to the high reactive and toxic cadmium core. The present study aimed to determine the toxicity of three different QDs (CdS 380, CdS 480 and CdSeS/ZnS) before and after the exposure of suspensions to sunlight, in order to assess the effect of environmentally relevant irradiation levels in their toxicity, which will act after their release to the environment. Therefore, a battery of ecotoxicological tests was performed with organisms that cover different functional and trophic levels, such as Vibrio fischeri, Raphidocelis subcapitata, Chlorella vulgaris and Daphnia magna. The results showed that core-shell type QDs showed lower toxic effects to V. fischeri in comparison to core type QDs before sunlight exposure. However, after sunlight exposure, there was a decrease of CdS 380 and CdS 480 QD toxicity to bacterium. Also, after sunlight exposure, an effective decrease of CdSeS/ZnS and CdS 480 toxicity for D. magna and R. subcapitata, and an evident increase in CdS 380 QD toxicity, at least for D. magna, were observed. The results of this study suggest that sunlight exposure has an effect in the aggregation and precipitation reactions of larger QDs, causing the degradation of functional groups and formation of larger bulks which may be less prone to photo-oxidation due to their diminished surface area. The same aggregation behaviour after sunlight exposure was observed for bare QDs. These results further emphasize that the shell of QDs seems to make them less harmful to aquatic biota, both under standard environmental conditions and after the exposure to a relevant abiotic factor like sunlight.
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Affiliation(s)
- B F Silva
- Department of Biology, Faculty of Science, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal; CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Rua dos Bragas, 289, 4050-123 Porto, Portugal
| | - T Andreani
- Centro de Investigação em Química da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal; Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal; CITAB - Centre for Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, UTAD, Vila Real, Portugal
| | - A Gavina
- Department of Biology, Faculty of Science, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal; CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Rua dos Bragas, 289, 4050-123 Porto, Portugal.
| | - M N Vieira
- Department of Biology, Faculty of Science, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal; CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Rua dos Bragas, 289, 4050-123 Porto, Portugal
| | - C M Pereira
- Centro de Investigação em Química da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal; Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - T Rocha-Santos
- Department of Chemistry and Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - R Pereira
- Department of Biology, Faculty of Science, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal; CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Rua dos Bragas, 289, 4050-123 Porto, Portugal
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136
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Goto TE, Lopes CC, Nader HB, Silva AC, Dantas NO, Siqueira JR, Caseli L. CdSe magic-sized quantum dots incorporated in biomembrane models at the air–water interface composed of components of tumorigenic and non-tumorigenic cells. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:1533-40. [DOI: 10.1016/j.bbamem.2016.04.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 04/08/2016] [Accepted: 04/19/2016] [Indexed: 10/21/2022]
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137
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Cepeda-Pérez E, López-Luke T, Plascencia-Villa G, Perez-Mayen L, Ceja-Fdez A, Ponce A, Vivero-Escoto J, de la Rosa E. SERS and integrative imaging upon internalization of quantum dots into human oral epithelial cells. JOURNAL OF BIOPHOTONICS 2016; 9:683-693. [PMID: 27120043 DOI: 10.1002/jbio.201600034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 04/01/2016] [Accepted: 04/03/2016] [Indexed: 06/05/2023]
Abstract
CdTe quantum dots (QDs) are widely used in bio-applications due to their size and highly efficient optical properties. However internalization mechanisms thereof for the variety of freshly extracted, not cultivated human cells and their specific molecular interactions remains an open topic for discussion. In this study, we assess the internalization mechanism of CdTe quantum dots (3.3 nm) capped with thioglycolic acid using non cultivated oral epithelial cells obtained from healthy donors. Naked gold nanoparticles (40 nm) were successfully used as nanosensors for surface-enhanced Raman spectroscopy to efficiently identify characteristic Raman peaks, providing new evidence indicating that the first interactions of these QDs with epithelial cells occurred preferentially with aromatic rings and amine groups of amino acid residues and glycans from trans-membrane proteins and cytoskeleton. Using an integrative combination of advanced imaging techniques, including ultra-high resolution SEM, high resolution STEM coupled with EDX spectroscopy together with the results obtained by Raman spectroscopy, it was determined that thioglycolic acid capped CdTe QDs are efficiently internalized into freshly extracted oral epithelial cells only by facilitated diffusion, distributed into cytoplasm and even within the cell nucleus in three minutes.
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Affiliation(s)
| | | | - Germán Plascencia-Villa
- Department of Physics and Astronomy, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA
| | | | | | - Arturo Ponce
- Department of Physics and Astronomy, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA
| | - Juan Vivero-Escoto
- The University of North Carolina-Charlotte, Department of Chemistry, 9201 University City Blvd., Charlotte, NC 28223, USA
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138
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Demin AM, Ulitko MV, Minin AS, Kuznetsova YV, Rempel’ SV, Krasnov VP, Rempel’ AA. The design of hybrid materials based on magnetic Fe3O4 nanoparticles and luminescent CdS nanoparticles for cell visualization. DOKLADY CHEMISTRY 2016. [DOI: 10.1134/s0012500816040042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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139
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A homogeneous and "off-on" fluorescence aptamer-based assay for chloramphenicol using vesicle quantum dot-gold colloid composite probes. Anal Chim Acta 2016; 929:49-55. [PMID: 27251948 DOI: 10.1016/j.aca.2016.04.060] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 04/26/2016] [Accepted: 04/30/2016] [Indexed: 11/21/2022]
Abstract
In this work, a novel homogeneous and signal "off-on" aptamer based fluorescence assay was successfully developed to detect chloramphenicol (CAP) residues in food based on the fluorescence resonance energy transfer (FRET). The vesicle nanotracer was prepared through labeling single stranded DNA binding protein (SSB) on limposome-CdSe/ZnS quantum dot (SSB/L-QD) complexes. It was worth mentioning that the signal tracer (SSB/L-QD) with vesicle shape, which was fabricated being encapsulated with a number of quantum dots and SSB. The nanotracer has excellent signal amplification effects. The vesicle composite probe was formed by combining aptamer labeled nano-gold (Au-Apt) and SSB/L-QD. Which based on SSB's specific affinity towards aptamer. This probe can't emit fluoresce which is in "off" state because the signal from SSB/L-QD as donor can be quenched by the Au-aptas acceptor. When CAP was added in the composite probe solution, the aptamer on the Au-Apt can be preferentially bounded with CAP then release from the composite probe, which can turn the "off" signal of SSB/L-QD tracer into "on" state. The assay indicates excellent linear response to CAP from 0.001 nM to 10 nM and detection limit down to 0.3 pM. The vesicle probes with size of 88 nm have strong signal amplification. Because a larger number of QDs can be labeled inside the double phosphorus lipid membrane. Besides, it was employed to detect CAP residues in the milk samples with results being agreed well with those from ELISA, verifying its accuracy and reliability.
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140
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Unfolding of insulin at the surface of ZnO quantum dots. Int J Biol Macromol 2016; 86:169-76. [DOI: 10.1016/j.ijbiomac.2016.01.075] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 01/17/2016] [Accepted: 01/21/2016] [Indexed: 01/05/2023]
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141
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Oh E, Liu R, Nel A, Gemill KB, Bilal M, Cohen Y, Medintz IL. Meta-analysis of cellular toxicity for cadmium-containing quantum dots. NATURE NANOTECHNOLOGY 2016; 11:479-86. [PMID: 26925827 DOI: 10.1038/nnano.2015.338] [Citation(s) in RCA: 280] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 12/16/2015] [Indexed: 04/14/2023]
Abstract
Understanding the relationships between the physicochemical properties of engineered nanomaterials and their toxicity is critical for environmental and health risk analysis. However, this task is confounded by material diversity, heterogeneity of published data and limited sampling within individual studies. Here, we present an approach for analysing and extracting pertinent knowledge from published studies focusing on the cellular toxicity of cadmium-containing semiconductor quantum dots. From 307 publications, we obtain 1,741 cell viability-related data samples, each with 24 qualitative and quantitative attributes describing the material properties and experimental conditions. Using random forest regression models to analyse the data, we show that toxicity is closely correlated with quantum dot surface properties (including shell, ligand and surface modifications), diameter, assay type and exposure time. Our approach of integrating quantitative and categorical data provides a roadmap for interrogating the wide-ranging toxicity data in the literature and suggests that meta-analysis can help develop methods for predicting the toxicity of engineered nanomaterials.
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Affiliation(s)
- Eunkeu Oh
- Optical Sciences Division, Code 5611, US Naval Research Laboratory, Washington, Washington DC 20375, USA
- Sotera Defense Solutions, Columbia, Maryland 21046, USA
| | - Rong Liu
- Institute of the Environment and Sustainability, University of California, Los Angeles, California 90095-1496, USA
- Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, California 90095-7227, USA
| | - Andre Nel
- Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, California 90095-7227, USA
- Department of Medicine, Division of NanoMedicine, University of California, Los Angeles, California 90095, USA
| | - Kelly Boeneman Gemill
- Center for Bio/Molecular Science and Engineering, Code 6900, US Naval Research Laboratory, SW Washington, Washington DC 20375, USA
| | - Muhammad Bilal
- Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, California 90095-7227, USA
| | - Yoram Cohen
- Institute of the Environment and Sustainability, University of California, Los Angeles, California 90095-1496, USA
- Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, California 90095-7227, USA
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095-1592, USA
| | - Igor L Medintz
- Center for Bio/Molecular Science and Engineering, Code 6900, US Naval Research Laboratory, SW Washington, Washington DC 20375, USA
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142
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Yan XF, Chen ZP, Cui YY, Hu YL, Yu RQ. Quantitative generalized ratiometric fluorescence spectroscopy for turbid media based on probe encapsulated by biologically localized embedding. Anal Chim Acta 2016; 921:38-45. [DOI: 10.1016/j.aca.2016.03.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 01/04/2016] [Accepted: 03/21/2016] [Indexed: 10/21/2022]
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143
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Courtney CM, Goodman SM, McDaniel JA, Madinger NE, Chatterjee A, Nagpal P. Photoexcited quantum dots for killing multidrug-resistant bacteria. NATURE MATERIALS 2016; 15:529-34. [PMID: 26779882 DOI: 10.1038/nmat4542] [Citation(s) in RCA: 156] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 12/14/2015] [Indexed: 05/22/2023]
Abstract
Multidrug-resistant bacterial infections are an ever-growing threat because of the shrinking arsenal of efficacious antibiotics. Metal nanoparticles can induce cell death, yet the toxicity effect is typically nonspecific. Here, we show that photoexcited quantum dots (QDs) can kill a wide range of multidrug-resistant bacterial clinical isolates, including methicillin-resistant Staphylococcus aureus, carbapenem-resistant Escherichia coli, and extended-spectrum β-lactamase-producing Klebsiella pneumoniae and Salmonella typhimurium. The killing effect is independent of material and controlled by the redox potentials of the photogenerated charge carriers, which selectively alter the cellular redox state. We also show that the QDs can be tailored to kill 92% of bacterial cells in a monoculture, and in a co-culture of E. coli and HEK 293T cells, while leaving the mammalian cells intact, or to increase bacterial proliferation. Photoexcited QDs could be used in the study of the effect of redox states on living systems, and lead to clinical phototherapy for the treatment of infections.
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Affiliation(s)
- Colleen M Courtney
- Chemical and Biological Engineering, University of Colorado, Boulder, Boulder, Colorado 80303, USA
| | - Samuel M Goodman
- Chemical and Biological Engineering, University of Colorado, Boulder, Boulder, Colorado 80303, USA
| | - Jessica A McDaniel
- Chemical and Biological Engineering, University of Colorado, Boulder, Boulder, Colorado 80303, USA
| | - Nancy E Madinger
- Division of Infectious Diseases, University of Colorado, Denver, Aurora, Colorado 80045, USA
| | - Anushree Chatterjee
- Chemical and Biological Engineering, University of Colorado, Boulder, Boulder, Colorado 80303, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, Colorado 80303, USA
| | - Prashant Nagpal
- Chemical and Biological Engineering, University of Colorado, Boulder, Boulder, Colorado 80303, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, Colorado 80303, USA
- Materials Science and Engineering, University of Colorado, Boulder, Boulder, Colorado 80303, USA
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144
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Li Y, Chen P, Wang Y, Yan S, Feng X, Du W, Koehler SA, Demirci U, Liu BF. Rapid Assembly of Heterogeneous 3D Cell Microenvironments in a Microgel Array. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:3543-8. [PMID: 26991071 DOI: 10.1002/adma.201600247] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 02/11/2016] [Indexed: 05/26/2023]
Abstract
Heterogeneous 3D cell microenvironment arrays are rapidly assembled by combining surface-wettability-guided assembly and microdroplet-array-based operations. This approach enables precise control over individual shapes, sizes, chemical concentrations, cell density, and 3D spatial distribution of multiple components. This technique provides a cost-effective solution to meet the increasing demand of stem cell research, tissue engineering, and drug screening.
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Affiliation(s)
- Yiwei Li
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
- Department of Applied Physics, John A. Paulson School of Engineering and Applied Sciences, Harvard University Cambridge, MA, 02138, USA
| | - Pu Chen
- Department of Radiology, School of Medicine, Stanford University, Palo Alto, CA, 94304, USA
| | - Yachao Wang
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Shuangqian Yan
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Xiaojun Feng
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Wei Du
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Stephan A Koehler
- Department of Applied Physics, John A. Paulson School of Engineering and Applied Sciences, Harvard University Cambridge, MA, 02138, USA
| | - Utkan Demirci
- Department of Radiology, School of Medicine, Stanford University, Palo Alto, CA, 94304, USA
| | - Bi-Feng Liu
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
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145
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Li X, Yang X, Yuwen L, Yang W, Weng L, Teng Z, Wang L. Evaluation of toxic effects of CdTe quantum dots on the reproductive system in adult male mice. Biomaterials 2016; 96:24-32. [PMID: 27135714 DOI: 10.1016/j.biomaterials.2016.04.014] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 04/14/2016] [Accepted: 04/15/2016] [Indexed: 11/24/2022]
Abstract
Fluorescent quantum dots (QDs) are highly promising nanomaterials for various biological and biomedical applications because of their unique optical properties, such as robust photostability, strong photoluminescence, and size-tunable fluorescence. Several studies have reported the in vivo toxicity of QDs, but their effects on the male reproduction system have not been examined. In this study, we investigated the reproductive toxicity of cadmium telluride (CdTe) QDs at a high dose of 2.0 nmol per mouse and a low dose of 0.2 nmol per mouse. Body weight measurements demonstrated there was no overt toxicity for both dose at day 90 after exposure, but the high dose CdTe affected body weight up to 15 days after exposure. CdTe QDs accumulated in the testes and damaged the tissue structure for both doses on day 90. Meanwhile, either of two CdTe QDs treatments did not significantly affect the quantity of sperm, but the high dose CdTe significantly decreased the quality of sperm on day 60. The serum levels of three major sex hormones were also perturbed by CdTe QDs treatment. However, the pregnancy rate and delivery success of female mice that mated with the treated male mice did not differ from those mated with untreated male mice. These results suggest that CdTe QDs can cause testes toxicity in a dose-dependent manner. The low dose of CdTe QDs is relatively safe for the reproductive system of male mice. Our preliminary result enables better understanding of the reproductive toxicity induced by cadmium-containing QDs and provides insight into the safe use of these nanoparticles in biological and environmental systems.
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Affiliation(s)
- Xiaohui Li
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China; School of Geography and Biological Information, Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Xiangrong Yang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Lihui Yuwen
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Wenjing Yang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Lixing Weng
- School of Geography and Biological Information, Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Zhaogang Teng
- Department of Medical Imaging, Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing 210002, China
| | - Lianhui Wang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China.
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146
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Swaminathan G, Sivaraman B, Moore L, Zborowski M, Ramamurthi A. Magnetically Responsive Bone Marrow Mesenchymal Stem Cell-Derived Smooth Muscle Cells Maintain Their Benefits to Augmenting Elastic Matrix Neoassembly. Tissue Eng Part C Methods 2016; 22:301-11. [PMID: 26830683 DOI: 10.1089/ten.tec.2015.0349] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Abdominal aortic aneurysms (AAA) represent abnormal aortal expansions that result from chronic proteolytic breakdown of elastin and collagen fibers by matrix metalloproteases. Poor elastogenesis by adult vascular smooth muscle cells (SMCs) limits regenerative repair of elastic fibers, critical for AAA growth arrest. Toward overcoming these limitations, we recently demonstrated significant elastogenesis by bone marrow mesenchymal stem cell-derived SMCs (BM-SMCs) and their proelastogenesis and antiproteolytic effects on rat aneurysmal SMCs (EaRASMCs). We currently investigate the effects of super paramagnetic iron oxide nanoparticle (SPION) labeling of BM-SMCs, necessary to magnetically guide them to the AAA wall, on their functional benefits. Our results indicate that SPION-labeling is noncytotoxic and does not adversely impact the phenotype and elastogenesis by BM-SMCs. In addition, SPION-BM-SMCs showed no changes in the ability of the BM-SMCs to stimulate elastin regeneration and attenuate proteolytic activity by EaRASMCs. Together, our results are promising toward the utility of SPIONs for magnetic targeting of BM-SMCs for in situ AAA regenerative repair.
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Affiliation(s)
- Ganesh Swaminathan
- 1 Department of Biomedical Engineering, Cleveland Clinic , Cleveland, Ohio.,2 Department of Biology, University of Akron , Akron, Ohio
| | | | - Lee Moore
- 1 Department of Biomedical Engineering, Cleveland Clinic , Cleveland, Ohio
| | - Maciej Zborowski
- 1 Department of Biomedical Engineering, Cleveland Clinic , Cleveland, Ohio
| | - Anand Ramamurthi
- 1 Department of Biomedical Engineering, Cleveland Clinic , Cleveland, Ohio
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147
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Chen KK, Liao K, Casillas G, Li Y, Ozin GA. Cationic Silicon Nanocrystals with Colloidal Stability, pH-Independent Positive Surface Charge and Size Tunable Photoluminescence in the Near-Infrared to Red Spectral Range. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2016; 3:1500263. [PMID: 27812459 PMCID: PMC5066801 DOI: 10.1002/advs.201500263] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 10/30/2015] [Indexed: 05/22/2023]
Abstract
In this report, the synthesis of a novel class of cationic quaternary ammonium-surface-functionalized silicon nanocrystals (ncSi) using a novel and highly versatile terminal alkyl halide-surface-functionalized ncSi synthon is described. The distinctive features of these cationic ncSi include colloidal stability, pH-independent positive surface charge, and size-tunable photoluminescence (PL) in the biologically relevant near-infrared-to-red spectral region. These cationic ncSi are characterized via a combination of high-resolution scanning transmission electron microscopy with energy-dispersive X-ray analysis, Fourier transform infrared, X-ray photoelectron, and photoluminescence spectroscopies, and zeta potential measurements.
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Affiliation(s)
- Kenneth K Chen
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Kristine Liao
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Gilberto Casillas
- UOW Electron Microscopy Centre University of Wollongong Wollongong New South Wales 2500 Australia
| | - Yiying Li
- Department of Materials Science & Engineering University of Toronto 184 College Street, Suite 140 Toronto Ontario M5S 3E4 Canada
| | - Geoffrey A Ozin
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
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148
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Neaime C, Amela-Cortes M, Grasset F, Molard Y, Cordier S, Dierre B, Mortier M, Takei T, Takahashi K, Haneda H, Verelst M, Lechevallier S. Time-gated luminescence bioimaging with new luminescent nanocolloids based on [Mo6I8(C2F5COO)6]2−metal atom clusters. Phys Chem Chem Phys 2016; 18:30166-30173. [DOI: 10.1039/c6cp05290h] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Functional silica nanoparticles based on metal atom clusters for time gated luminescence biotechnology applications.
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149
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Mal J, Nancharaiah YV, van Hullebusch ED, Lens PNL. Metal chalcogenide quantum dots: biotechnological synthesis and applications. RSC Adv 2016. [DOI: 10.1039/c6ra08447h] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Metal chalcogenide (metal sulfide, selenide and telluride) quantum dots (QDs) have attracted considerable attention due to their quantum confinement and size-dependent photoemission characteristics.
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Affiliation(s)
- J. Mal
- UNESCO-IHE
- Delft
- The Netherlands
- Biofouling and Biofilm Process Section
- Water and Steam Chemistry Division
| | - Y. V. Nancharaiah
- UNESCO-IHE
- Delft
- The Netherlands
- Université Paris-Est
- Laboratoire Géomatériaux et Environnement (LGE)
| | - E. D. van Hullebusch
- Biofouling and Biofilm Process Section
- Water and Steam Chemistry Division
- Bhabha Atomic Research Centre
- Kalpakkam-603102
- India
| | - P. N. L. Lens
- UNESCO-IHE
- Delft
- The Netherlands
- Department of Chemistry and Bioengineering
- Tampere University of Technology
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150
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Hu L, Zhang C, Zeng G, Chen G, Wan J, Guo Z, Wu H, Yu Z, Zhou Y, Liu J. Metal-based quantum dots: synthesis, surface modification, transport and fate in aquatic environments and toxicity to microorganisms. RSC Adv 2016. [DOI: 10.1039/c6ra13016j] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The intense interest in metal-based QDs is diluted by the fact that they cause risks to aquatic environments.
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