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Chen YF, Hsu CC, Chung CH. Acute and Subacute Toxicity of Fluorescent Gold Nanoclusters Conjugated with α-Lipoic Acid. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3868. [PMID: 36364646 PMCID: PMC9654421 DOI: 10.3390/nano12213868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/21/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
Fluorescent gold nanoclusters conjugated with α-lipoic acid (FANC) is a promising biocompatible fluorescent nanomaterial with a high potential for drug development. However, there is still no FANC-related research on toxicology, which is very important for future research and the development of healthy food supplements or drugs. This study uses oral administration of FANC to determine the most appropriate dose range in ICR mice for further evaluation. The in vivo acute and subacute toxicity study was conducted by oral administration of FANC to male and female ICR mice. Animal survival, body weight, daily food consumption, hematological profile, organ coefficient, serum biochemistry profile, and histopathological changes were analyzed. FANC did not show any form of morbidity or mortality at acute and subacute toxicity in both male and female ICR mice. Animal behavior, daily food consumption, hematological profile, organ coefficient, and histopathology showed no treatment-related malignant changes at single and repeated doses. Furthermore, serum glutamic-oxaloacetic transaminase (GOT), glutamic-pyruvic transaminase (GPT), lactate dehydrogenase (LDH), blood urea nitrogen (BUN), and creatinine (CRE) levels showed no significant malignant changes, which indicated that FANC does not cause liver and renal damage. The only change observed in this study was the change in body weight. The body weight of the FANC-treated group was slightly decreased in female mice but increased in male mice; however, the body weight decreases were below the threshold of concern, and there was no dose-response effect. In conclusion, no observed adverse effect level (NOAEL) in repeated doses was considered in 20 μM/100 μL/25 g male and female ICR mice.
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Kong C, Luo Y, Zhang W, Lin T, Na Z, Liu X, Xie Z. A ratio fluorescence method based on dual emissive gold nanoclusters for detection of biomolecules and metal ions. RSC Adv 2022; 12:12060-12067. [PMID: 35481087 PMCID: PMC9020344 DOI: 10.1039/d2ra00131d] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 03/28/2022] [Indexed: 01/19/2023] Open
Abstract
Gold nanoclusters have good biocompatibility and can be easily modified to improve their luminescence properties. In this study, we prepared a new type of dual-emitting gold nanoclusters (d-Au NCs) for discriminative detection of phenylalanine and Fe3+ with high selectivity and sensitivity. The fluorescence sensor which was synthesized without any further assembly or conjugation shows dual-emissions at 430 nm and 600 nm under a single excitation at 350 nm. Phenylalanine can turn on the red emission of the probe, while Fe3+ can turn on its yellow emission and turn off the red emission. By detecting a variety of amino acids and metal ions, d-Au NCs showed good selectivity to phenylalanine and Fe3+. Finally, this method was applied to determine phenylalanine and Fe3+ in lake water, human urine and milk, which has certain application prospects in the field of biology and environment.
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Affiliation(s)
- Chenchen Kong
- Beijing Key Laboratory of Environmental and Viral Oncology, Faculty of Environment and Life, Beijing University of Technology No. 100, Pingleyuan, Chaoyang District Beijing 100124 China
| | - Yunjing Luo
- Beijing Key Laboratory of Environmental and Viral Oncology, Faculty of Environment and Life, Beijing University of Technology No. 100, Pingleyuan, Chaoyang District Beijing 100124 China
| | - Wei Zhang
- Beijing Key Laboratory of Environmental and Viral Oncology, Faculty of Environment and Life, Beijing University of Technology No. 100, Pingleyuan, Chaoyang District Beijing 100124 China
| | - Taifeng Lin
- Beijing Key Laboratory of Environmental and Viral Oncology, Faculty of Environment and Life, Beijing University of Technology No. 100, Pingleyuan, Chaoyang District Beijing 100124 China
| | - Zhen Na
- Beijing Key Laboratory of Environmental and Viral Oncology, Faculty of Environment and Life, Beijing University of Technology No. 100, Pingleyuan, Chaoyang District Beijing 100124 China
| | - Xuemei Liu
- Beijing Key Laboratory of Environmental and Viral Oncology, Faculty of Environment and Life, Beijing University of Technology No. 100, Pingleyuan, Chaoyang District Beijing 100124 China
| | - Ziqi Xie
- Beijing Key Laboratory of Environmental and Viral Oncology, Faculty of Environment and Life, Beijing University of Technology No. 100, Pingleyuan, Chaoyang District Beijing 100124 China
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Toxicological evaluation of fluorescent 11-mercaptoundecanoic gold nanoclusters as promising label-free bioimaging probes in different cancer cell lines. Toxicol In Vitro 2021; 73:105140. [PMID: 33705896 DOI: 10.1016/j.tiv.2021.105140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/05/2021] [Indexed: 01/06/2023]
Abstract
Due to advancement in nanomaterials and increasing use of functionalized gold nanoclusters (AuNCs) in different biomedical applications, better understanding of their potential cytotoxicity is necessary. Interactions of ultra-small fluorescent AuNCs with mammalian cells remains up to this day poorly understood, therefore, cytotoxic evaluation of thoroughly characterized ca. 2.5 nm spherical water-soluble 11-mercaptoundecanoic acid coated AuNCs (AuNC@M) with diverse fluorescent properties in variety of mammalian cancer cell lines was performed. Cell viability was assessed by traditional MTT assay and xCELLigence real time cell analyzer. Cell apoptosis was evaluated via an Annexin V-FITC/propidium iodide (PI) assay. Confocal fluorescence imaging confirmed that tested AuNC@M entered live cells and were homogeneously distributed in their cytoplasm. The results suggested that the cytotoxicity of tested nanoclusters was very low, or near the control level at concentrations 0.1 and 0.5 mg/mL in the cell lines after 24 h exposition. The purity of tested AuNC@M had no relevant effect on cell viability and no differences were observed after 24 h in our study. The low toxicity toward cancer cells further strengthens our view that AuNC@M are promising label-free fluorescent probes for bio-labelling and bio-imaging, or they can even serve as platforms for antitumor drug delivery systems.
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Shi Y, Wang Y, Zhu J, Liu W, Khan MZH, Liu X. Molecularly Imprinting Polymers (MIP) Based on Nitrogen Doped Carbon Dots and MIL-101(Fe) for Doxorubicin Hydrochloride Delivery. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1655. [PMID: 32842523 PMCID: PMC7559160 DOI: 10.3390/nano10091655] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 08/19/2020] [Accepted: 08/20/2020] [Indexed: 12/16/2022]
Abstract
MIL-based molecularly imprinted polymer (MIP) nanocomposites were successfully synthesized through a simple and versatile stirring auxiliary encapsulation method. MIP as a carrier has been applied to the highly efficient selective recognition and sustained release of doxorubicin hydrochloride (DOX). The adsorption mechanism and release behavior of MIP@DOX in vitro were also discussed. Adsorption studies showed that MIP using DOX as template had specific selectivity to DOX, and its optimal drug loading efficiency reached 97.99%. The adsorption isotherm accorded with Freundlich models. The cumulative release curve showed that at the conditions of pH 5.5 and 7.4, the nanomaterials have a slow-release effect on the release of DOX. In addition, the cytotoxicity and bioactivity of MIP nanoparticles on HepG2 and HL-7702 cell lines measured by MTT assay also proved their low toxicity and biological activity. The cell activity of HepG2 and HL-7702 incubated with MIP for 24 h was 69.9% and 76.07%, respectively. These results collectively illustrated that the MIP nano-materials synthesized in this study can be efficiently employed to the drug delivery systems.
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Affiliation(s)
- Yuqiong Shi
- Henan International Joint Laboratory of Medicinal Plants Utilization, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Yuxuan Wang
- Henan International Joint Laboratory of Medicinal Plants Utilization, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Jinhua Zhu
- Henan International Joint Laboratory of Medicinal Plants Utilization, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Wei Liu
- Henan International Joint Laboratory of Medicinal Plants Utilization, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Md Zaved H Khan
- Department of Chemical Engineering, Jessore University of Science and Technology, Jessore 7408, Bangladesh
| | - Xiuhua Liu
- Henan International Joint Laboratory of Medicinal Plants Utilization, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
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Govindaraju S, Roshini A, Lee MH, Yun K. Kaempferol conjugated gold nanoclusters enabled efficient for anticancer therapeutics to A549 lung cancer cells. Int J Nanomedicine 2019; 14:5147-5157. [PMID: 31371953 PMCID: PMC6636439 DOI: 10.2147/ijn.s209773] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Accepted: 06/15/2019] [Indexed: 12/18/2022] Open
Abstract
Background: Kaempferol (K) is a recognized anticancer drug that can conjugate with small-size gold nanoclusters (AuNCs). Materials and methods: K-AuNCs were synthesized and their use as an anticancer drug was explored using A549 lung cancer cells. Colony formation and cell migration assays were carried out. The morphology of the K-AuNCs treated A549 cells was explored using bio-atomic force microscopy. Results: The K-AuNCs were 1-3 nm in diameter and emitted strong fluorescent at 650 nm following excitation at 550 nm. The stretching and bending nature of the K-AuNCs were analyzed by the Fourier transform infrared spectroscopy. The presence of kaempferol in the AuNCs were confirmed by the PL spectroscopy. Conclusion: The synthesized K-AuNCs mainly targeted and damaged the nuclei of the cancer cells. This composite nanocluster was less toxicity to the normal human cell and higher toxicity to the A549 lunch cancer cell and these material is potential for anticancer drug delivery and bio imaging applications.
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Affiliation(s)
- Saravanan Govindaraju
- Department of Bionanotechnology, Gachon University, Gyeonggi-do 13120, Republic of Korea
| | - Arivazhagan Roshini
- Department of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Min-Ho Lee
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Kyusik Yun
- Department of Bionanotechnology, Gachon University, Gyeonggi-do 13120, Republic of Korea
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Daems N, Penninckx S, Nelissen I, Van Hoecke K, Cardinaels T, Baatout S, Michiels C, Lucas S, Aerts A. Gold nanoparticles affect the antioxidant status in selected normal human cells. Int J Nanomedicine 2019; 14:4991-5015. [PMID: 31371943 PMCID: PMC6635753 DOI: 10.2147/ijn.s203546] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 05/14/2019] [Indexed: 12/27/2022] Open
Abstract
Purpose: This study evaluates the cytotoxicity of AuNPs coated with polyallylamine (AuNPs-PAA) and conjugated or not to the epidermal growth factor receptor (EGFR)-targeting antibody Cetuximab (AuNPs-PAA-Ctxb) in normal human kidney (HK-2), liver (THLE-2) and microvascular endothelial (TIME) cells, and compares it with two cancer cell lines that are EGFR-overexpressing (A431) or EGFR-negative (MDA-MB-453). Results: Conjugation of Cetuximab to AuNPs-PAA increased the AuNPs-PAA-Ctxb interactions with cells, but reduced their cytotoxicity. TIME cells exhibited the strongest reduction in viability after exposure to AuNPs-PAA(±Ctxb), followed by THLE-2, MDA-MB-453, HK-2 and A431 cells. This cell type-dependent sensitivity was strongly correlated to the inhibition of thioredoxin reductase (TrxR) and glutathione reductase (GR), and to the depolarization of the mitochondrial membrane potential. Both are suggested to initiate apoptosis, which was indeed detected in a concentration- and time-dependent manner. The role of oxidative stress in AuNPs-PAA(±Ctxb)-induced cytotoxicity was demonstrated by co-incubation of the cells with N-acetyl L-cysteine (NAC), which significantly decreased apoptosis and mitochondrial membrane depolarization. Conclusion: This study helps to identify the cells and tissues that could be sensitive to AuNPs and deepens the understanding of the risks associated with the use of AuNPs in vivo.
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Affiliation(s)
- Noami Daems
- Radiobiology Research Unit, Interdisciplinary Biosciences, Institute for Environment, Health and Safety, Belgian Nuclear Research Centre (SCK.CEN), Mol, Belgium
| | - Sébastien Penninckx
- Research Center for the Physics of Matter and Radiation-NARILIS, University of Namur, Namur, Belgium
| | - Inge Nelissen
- Health Department, Flemish Institute For Technological Research (VITO), Mol, Belgium
| | - Karen Van Hoecke
- Radiochemistry Expert Group, Institute for Nuclear Materials Science, Belgian Nuclear Research Centre (SCK.CEN), Mol, Belgium
| | - Thomas Cardinaels
- Radiochemistry Expert Group, Institute for Nuclear Materials Science, Belgian Nuclear Research Centre (SCK.CEN), Mol, Belgium.,Department of Chemistry, KU Leuven, Heverlee, Belgium
| | - Sarah Baatout
- Radiobiology Research Unit, Interdisciplinary Biosciences, Institute for Environment, Health and Safety, Belgian Nuclear Research Centre (SCK.CEN), Mol, Belgium
| | - Carine Michiels
- Unité de Recherche en Biologie Cellulaire-NARILIS, University of Namur, Namur, Belgium
| | - Stéphane Lucas
- Research Center for the Physics of Matter and Radiation-NARILIS, University of Namur, Namur, Belgium
| | - An Aerts
- Radiobiology Research Unit, Interdisciplinary Biosciences, Institute for Environment, Health and Safety, Belgian Nuclear Research Centre (SCK.CEN), Mol, Belgium
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Selective, fast and semi-automatic enrichment of nucleosides by using a phenylboronic acid modified hybrid material composed of graphene oxide and melamine sponge. Mikrochim Acta 2018; 185:348. [DOI: 10.1007/s00604-018-2878-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 06/17/2018] [Indexed: 11/26/2022]
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8
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Xue Y, Wang J, Huang Y, Gao X, Kong L, Zhang T, Tang M. Comparative cytotoxicity and apoptotic pathways induced by nanosilver in human liver HepG2 and L02 cells. Hum Exp Toxicol 2018; 37:1293-1309. [PMID: 29658330 DOI: 10.1177/0960327118769718] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Silver nanoparticles are used in many commercial products in daily life. Exposure to nanosilver has hepatotoxic effects in animals. This study investigated the cytotoxicity associated with polyvinylpyrrolidone-coated nanosilver (23.44 ± 4.92 nm in diameter) exposure in the human hepatoma cell line (HepG2) and normal hepatic cell line (L02), and the molecular mechanisms induced by nanosilver in HepG2 cells. Nanosilver, in doses of 20-160 μg mL-1 for 24 and 48 h, reduced cell viability in a dose- and time-dependent manner and induced cell membrane leakage and mitochondria injury in both cell lines; these effects were more pronounced in HepG2 cells than in L02 cells. Intracellular oxidative stress was documented by reactive oxygen species (ROS) being generated in HepG2 cells but not in L02 cells, an effect possibly due to differential uptake of nanosilver by cancer cells and normal cells. In HepG2 cells, apoptosis was documented by finding that ROS triggered a decrease in mitochondrial membrane potential, an increase in cytochrome c release, activation of caspase 3 and caspase 9, and a decrease in the ratio of Bcl-2/Bax. Furthermore, nanosilver activated the Fas death receptor pathway by downregulation of nuclear factor-κB and activation of caspase 8 and caspase 3. These results suggest that apoptosis induced by nanosilver in HepG2 cells is mediated via a mitochondria-dependent pathway and the Fas death receptor pathway. These findings provide toxicological and mechanistic information that can help in assessing the effects of nanosilver in biological systems, including the potential for anticancer activities.
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Affiliation(s)
- Y Xue
- 1 Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health & Collaborative Innovation Center of Suzhou Nano Science and Technology, Southeast University, Nanjing 210009, China.,2 Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, Nanjing 210009, China
| | - J Wang
- 1 Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health & Collaborative Innovation Center of Suzhou Nano Science and Technology, Southeast University, Nanjing 210009, China
| | - Y Huang
- 1 Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health & Collaborative Innovation Center of Suzhou Nano Science and Technology, Southeast University, Nanjing 210009, China
| | - X Gao
- 1 Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health & Collaborative Innovation Center of Suzhou Nano Science and Technology, Southeast University, Nanjing 210009, China
| | - L Kong
- 1 Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health & Collaborative Innovation Center of Suzhou Nano Science and Technology, Southeast University, Nanjing 210009, China.,2 Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, Nanjing 210009, China
| | - T Zhang
- 1 Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health & Collaborative Innovation Center of Suzhou Nano Science and Technology, Southeast University, Nanjing 210009, China.,2 Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, Nanjing 210009, China
| | - M Tang
- 1 Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health & Collaborative Innovation Center of Suzhou Nano Science and Technology, Southeast University, Nanjing 210009, China.,2 Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, Nanjing 210009, China
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9
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Cheng T, Zhang Y, Liu X, Zhang X, Zhang H. Surfactant assisted enrichment of nucleosides by using a sorbent consisting of magnetic polysulfone capsules and mesoporous silica nanoparticles modified with phenylboronic acid. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-2016-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Dutta D, Chattopadhyay A, Ghosh SS. Cationic BSA Templated Au–Ag Bimetallic Nanoclusters As a Theranostic Gene Delivery Vector for HeLa Cancer Cells. ACS Biomater Sci Eng 2016; 2:2090-2098. [DOI: 10.1021/acsbiomaterials.6b00517] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Deepanjalee Dutta
- Centre for Nanotechnology, ‡Department of Chemistry, §Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Arun Chattopadhyay
- Centre for Nanotechnology, ‡Department of Chemistry, §Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Siddhartha Sankar Ghosh
- Centre for Nanotechnology, ‡Department of Chemistry, §Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
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11
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Menti C, Beltrami M, Possan AL, Martins ST, Henriques JAP, Santos AD, Missell FP, Roesch-Ely M. Biocompatibility and degradation of gold-covered magneto-elastic biosensors exposed to cell culture. Colloids Surf B Biointerfaces 2016; 143:111-117. [PMID: 26998872 DOI: 10.1016/j.colsurfb.2016.03.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 02/17/2016] [Accepted: 03/10/2016] [Indexed: 11/29/2022]
Abstract
Magneto-elastic materials (ME) have important advantages when applied as biosensors due to the possibility of wireless monitoring. Commercial Metglas 2826MB3™ (FeNiMoB) is widely used, however sensor stabilization is an important factor for biosensor performance. This study compared the effects of biocompatibility and degradation of the Metglas 2826MB3™ alloy, covered or not with a gold layer, when in contact with cell culture medium. Strips of amorphous Metglas 2826MB3™ were cut and coated with thin layers of Cr and Au, as verified by Rutherford Backscattering Spectroscopy (RBS). Using Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES), the presence of metals in the culture medium was quantitatively determined for up to seven days after alloy exposure. Biocompatibility of fibroblast Chinese Hamster Ovary (CHO) cultures was tested and cytotoxicity parameters were investigated by indirect means of reduction of MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) at 1, 2 and 7 days. Cell death was further evaluated through in situ analysis using Acridine Orange/Ethidium Bromide (AO/EB) staining and images were processed with ImageJ software. Ions from Metglas(®) 2826MB3™ induced a degradation process in living organisms. The cytotoxicity assay showed a decrease in the percentage of live cells compared to control for the ME strip not coated with gold. AO/EB in situ staining revealed that most of the cells grown on top of the gold-covered sensor presented a normal morphology (85.46%). Covering ME sensors with a gold coating improved their effectiveness by generating protection of the transducer by reducing the release of ions and promoting a significant cell survival.
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Affiliation(s)
- C Menti
- Laboratório de Genômica, Proteômica e Reparo de DNA, Instituto de Biotecnologia, Universidade de Caxias do Sul, Brazil
| | - M Beltrami
- Laboratório de Caracterização Magnética, CCET, Universidade de Caxias do Sul, Brazil
| | - A L Possan
- Laboratório de Caracterização Magnética, CCET, Universidade de Caxias do Sul, Brazil
| | - S T Martins
- Laboratório de Genômica, Proteômica e Reparo de DNA, Instituto de Biotecnologia, Universidade de Caxias do Sul, Brazil
| | - J A P Henriques
- Laboratório de Genômica, Proteômica e Reparo de DNA, Instituto de Biotecnologia, Universidade de Caxias do Sul, Brazil
| | - A D Santos
- Instituto de Física, Universidade de São Paulo, São Paulo, SP, Brazil
| | - F P Missell
- Laboratório de Caracterização Magnética, CCET, Universidade de Caxias do Sul, Brazil
| | - M Roesch-Ely
- Laboratório de Genômica, Proteômica e Reparo de DNA, Instituto de Biotecnologia, Universidade de Caxias do Sul, Brazil.
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12
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Liu Y, Li S, Chen D, Wang Z, Zhang J, Tian C, Ding L, Chen Y, Qian Z, Gu Y. Clinical diagnosis of EML4–ALK mutation in NSCLC by a gold nanoparticle beacon. RSC Adv 2016. [DOI: 10.1039/c6ra21230a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The existence of EML4–ALK, a mutated fusion gene in non-small-cell lung cancer (NSCLC), is an important consideration in the decision of the treatment options for NSCLC patients. Gold nanoparticle beacons could be applied in clinical detection of the fusion gene visually.
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13
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Deng D, Li Y, Xue J, Wang J, Ai G, Li X, Gu Y. Gold nanoparticle-based beacon to detect STAT5b mRNA expression in living cells: a case optimized by bioinformatics screen. Int J Nanomedicine 2015; 10:3231-44. [PMID: 25987838 PMCID: PMC4422291 DOI: 10.2147/ijn.s81754] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Messenger RNA (mRNA), a single-strand ribonucleic acid with functional gene information is usually abnormally expressed in cancer cells and has become a promising biomarker for the study of tumor progress. Hairpin DNA-coated gold nanoparticle (hDAuNP) beacon containing a bare gold nanoparticle (AuNP) as fluorescence quencher and thiol-terminated fluorescently labeled stem-loop-stem oligonucleotide sequences attached by Au-S bond is currently a new nanoscale biodiagnostic platform capable of mRNA detection, in which the design of the loop region sequence is crucial for hybridizing with the target mRNA. Hence, in this study, to improve the sensitivity and selectivity of hDAuNP beacon simultaneously, the loop region of hairpin DNA was screened by bioinformatics strategy. Here, signal transducer and activator of transcription 5b (STAT5b) mRNA was selected and used as a practical example. The results from the combined characterizations using optical techniques, flow cytometry assay, and cell microscopic imaging showed that after optimization, the as-prepared hDAuNP beacon had higher selectivity and sensitivity for the detection of STAT5b mRNA in living cells, as compared with our previous beacon. Thus, the bioinformatics method may be a promising new strategy for assisting in the designing of the hDAuNP beacon, extending its application in the detection of mRNA expression and the resultant mRNA-based biological processes and disease pathogenesis.
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Affiliation(s)
- Dawei Deng
- Department of Biomedical Engineering, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Yang Li
- Department of Biomedical Engineering, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Jianpeng Xue
- Department of Biomedical Engineering, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Jie Wang
- Department of Biomedical Engineering, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Guanhua Ai
- Department of Biomedical Engineering, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Xin Li
- Department of Biomedical Engineering, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Yueqing Gu
- Department of Biomedical Engineering, China Pharmaceutical University, Nanjing, People's Republic of China
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