1
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Cui Y, Zhao J, Li H. Chromogenic Mechanisms of Colorimetric Sensors Based on Gold Nanoparticles. BIOSENSORS 2023; 13:801. [PMID: 37622887 PMCID: PMC10452725 DOI: 10.3390/bios13080801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/31/2023] [Accepted: 08/08/2023] [Indexed: 08/26/2023]
Abstract
The colorimetric signal readout method is widely used in visualized analyses for its advantages, including visualization of test results, simple and fast operations, low detection cost and fast response time. Gold nanoparticles (Au NPs), which not only exhibit enzyme-like activity but also have the advantages of tunable localized surface plasmon resonance (LSPR), high stability, good biocompatibility and easily modified properties, provide excellent platforms for the construction of colorimetric sensors. They are widely used in environmental monitoring, biomedicine, the food industry and other fields. This review focuses on the chromogenic mechanisms of colorimetric sensors based on Au NPs adopting two different sensing strategies and summarizes significant advances in Au NP-based colorimetric sensing with enzyme-like activity and tunable LSPR characteristics. In addition, the sensing strategies based on the LSPR properties of Au NPs are classified into four modulation methods: aggregation, surface modification, deposition and etching, and the current status of visual detection of various analytes is discussed. Finally, the review further discusses the limitations of current Au NP-based detection strategies and the promising prospects of Au NPs as colorimetric sensors, guiding the design of novel colorimetric sensors.
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Affiliation(s)
- Yanyun Cui
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China; (J.Z.); (H.L.)
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2
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Tellechea E, Asensio AC, Ciaurriz P, Buezo J, López-Gómez P, Urra M, Moran JF. A Study of the Interface of Gold Nanoparticles Conjugated to Cowpea Fe-Superoxide Dismutase. Antioxidants (Basel) 2022; 11:2082. [PMID: 36358454 PMCID: PMC9686739 DOI: 10.3390/antiox11112082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/14/2022] [Accepted: 10/17/2022] [Indexed: 10/16/2023] Open
Abstract
The iron superoxide dismutase (FeSOD) is a first barrier to defend photosynthetic organisms from superoxide radicals. Although it is broadly present in plants and bacteria, FeSODs are absent in animals. They belong to the same phylogenic family as Mn-containing SODs, which are also highly efficient at detoxifying superoxide radicals. In addition, SODs can react with peroxynitrite, and FeSOD enzyme has already been used to evaluate the anti-nitrative capacity of plant antioxidants. Gold nanoparticles (AuNPs) have been shown to significantly improve the functionality and the efficiency of ligands, providing they are properly assembled. In this work, the characteristics of the recombinant cowpea (Vigna unguiculata) FeSOD (rVuFeSOD) immobilized onto AuNPs were investigated as a function of (1) NP surface chemistry and (2) biofunctionalization methods, either physical adsorption or covalent bonding. The NP surface chemistry was studied by varying the concentration of the ligand molecule 11-mercaptoundecanoic acid (MUA) on the NP surface. The coverage and activity of the protein on AuNPs was determined and correlated to the surface chemistry and the two biofunctionalization methods. rVuFeSOD-AuNPs conjugate stability was monitored through absorption measurements, agarose gel electrophoresis and DLS, enzymatic activity by a colorimetric assay and by in-gel activity assay, and coverage was measured by colorimetric assay. When using physical adsorption, the NP is the most perturbing agent for the activity of the enzyme. In contrast, only the NP coverage was affected by MUA ligand concentration. However, during covalent attachment, both the NP and the concentration of MUA on the surface influenced the enzyme activity, while the coverage of the NP remained constant. The results evidence the importance of the biomolecule and AuNP interaction for the functionality of the hybrid. These strategies can be used to develop electrochemical biosensors for O2•- and for peroxynitrite in biomedical applications.
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Affiliation(s)
- Edurne Tellechea
- NAITEC-Technological Center of Automotive and Mechatronics, C/Tajonar 20, 31006 Pamplona, Spain
| | - Aaron C. Asensio
- NAITEC-Technological Center of Automotive and Mechatronics, C/Tajonar 20, 31006 Pamplona, Spain
| | - Paula Ciaurriz
- NAITEC-Technological Center of Automotive and Mechatronics, C/Tajonar 20, 31006 Pamplona, Spain
| | - Javier Buezo
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Department of Sciences, Public University of Navarre (UPNA); Avda. de Pamplona 123, 31192 Mutilva, Spain
| | - Pedro López-Gómez
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Department of Sciences, Public University of Navarre (UPNA); Avda. de Pamplona 123, 31192 Mutilva, Spain
| | - Marina Urra
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Department of Sciences, Public University of Navarre (UPNA); Avda. de Pamplona 123, 31192 Mutilva, Spain
| | - Jose F. Moran
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Department of Sciences, Public University of Navarre (UPNA); Avda. de Pamplona 123, 31192 Mutilva, Spain
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Metallic and Metal Oxides Nanoparticles for Sensing Food Pathogens—An Overview of Recent Findings and Future Prospects. MATERIALS 2022; 15:ma15155374. [PMID: 35955309 PMCID: PMC9370041 DOI: 10.3390/ma15155374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 07/30/2022] [Accepted: 08/03/2022] [Indexed: 02/01/2023]
Abstract
Nowadays, special importance is given to quality control and food safety. Food quality currently creates significant problems for the industry and implicitly for consumers and society. The effects materialize in economic losses, alterations of the quality and organoleptic properties of the commercial products, and, last but not least, they constitute risk factors for the consumer’s health. In this context, the development of analytical systems for the rapid determination of the sanitary quality of food products by detecting possible pathogenic microorganisms (such as Escherichia coli or Salmonella due to the important digestive disorders that they can cause in many consumers) is of major importance. Using efficient and environmentally friendly detection systems for identification of various pathogens that modify food matrices and turn them into food waste faster will also improve agri-food quality throughout the food chain. This paper reviews the use of metal nanoparticles used to obtain bio nanosensors for the purpose mentioned above. Metallic nanoparticles (Au, Ag, etc.) and their oxides can be synthesized by several methods, such as chemical, physical, physico-chemical, and biological, each bringing advantages and disadvantages in their use for developing nanosensors. In the “green chemistry” approach, a particular importance is given to the metal nanoparticles obtained by phytosynthesis. This method can lead to the development of good quality nanoparticles, at the same time being able to use secondary metabolites from vegetal wastes, as such providing a circular economy character. Considering these aspects, the use of phytosynthesized nanoparticles in other biosensing applications is also presented as a glimpse of their potential, which should be further explored.
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Dhasmana S, Dhasmana A, Narula AS, Jaggi M, Yallapu MM, Chauhan SC. The panoramic view of amyotrophic lateral sclerosis: A fatal intricate neurological disorder. Life Sci 2022; 288:120156. [PMID: 34801512 DOI: 10.1016/j.lfs.2021.120156] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 02/07/2023]
Abstract
Amyotrophic lateral sclerosis (ALS) is a progressive and fatal neurological disease affecting both upper and lower motor neurons. In the United States alone, there are 16,000-20,000 established cases of ALS. The early disease diagnosis is challenging due to many overlapping pathophysiologies with other neurological diseases. The etiology of ALS is unknown; however, it is divided into two categories: familial ALS (fALS) which occurs due to gene mutations & contributes to 5-10% of ALS, and sporadic ALS (sALS) which is due to environmental factors & contributes to 90-95% of ALS. There is still no curative treatment for ALS: palliative care and symptomatic treatment are therefore essential components in the management of these patients. In this review, we provide a panoramic view of ALS, which includes epidemiology, risk factors, pathophysiologies, biomarkers, diagnosis, therapeutics (natural, synthetic, gene-based, pharmacological, stem cell, extracellular vesicles, and physical therapy), controversies (in the clinical trials of ALS), the scope of nanomedicine in ALS, and future perspectives.
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Affiliation(s)
- Swati Dhasmana
- Department of Immunology and Microbiology, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA; South Texas Center of Excellence in Cancer Research, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA
| | - Anupam Dhasmana
- Department of Immunology and Microbiology, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA; South Texas Center of Excellence in Cancer Research, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA
| | - Acharan S Narula
- Narula Research LLC, 107 Boulder Bluff, Chapel Hill, NC 27516, USA
| | - Meena Jaggi
- Department of Immunology and Microbiology, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA; South Texas Center of Excellence in Cancer Research, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA
| | - Murali M Yallapu
- Department of Immunology and Microbiology, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA; South Texas Center of Excellence in Cancer Research, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA
| | - Subhash C Chauhan
- Department of Immunology and Microbiology, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA; South Texas Center of Excellence in Cancer Research, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78504, USA.
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Zhang L, Sun H, Zhao J, Lee J, Ee Low L, Gong L, Chen Y, Wang N, Zhu C, Lin P, Liang Z, Wei M, Ling D, Li F. Dynamic nanoassemblies for imaging and therapy of neurological disorders. Adv Drug Deliv Rev 2021; 175:113832. [PMID: 34146626 DOI: 10.1016/j.addr.2021.113832] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 05/07/2021] [Accepted: 06/11/2021] [Indexed: 02/07/2023]
Abstract
The past decades have witnessed an increased incidence of neurological disorders (NDs) such as Alzheimer's disease, Parkinson's disease, Huntington's disease, amyotrophic lateral sclerosis, ischemic stroke, and epilepsy, which significantly lower patients' life quality and increase the economic and social burden. Recently, nanomedicines composed of imaging and/or therapeutic agents have been explored to diagnose and/or treat NDs due to their enhanced bioavailability, blood-brain barrier (BBB) permeability, and targeting capacity. Intriguingly, dynamic nanoassemblies self-assembled from functional nanoparticles to simultaneously interfere with multiple pathogenic substances and pathological changes, have been regarded as one of the foremost candidates to improve the diagnostic and therapeutic efficacy of NDs. To help readers better understand this emerging field, in this review, the pathogenic mechanism of different types of NDs is briefly introduced, then the functional nanoparticles used as building blocks in the construction of dynamic nanoassemblies for NDs theranostics are summarized. Furthermore, dynamic nanoassemblies that can actively cross the BBB to target brain lesions, sensitively and efficiently diagnose or treat NDs, and effectively promote neuroregeneration are highlighted. Finally, we conclude with our perspectives on the future development in this field.
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Eghtedari M, Jafari Porzani S, Javanmardi M, Ganjali MR, Hosseinkhani S. Etching of AuNPs Through Superoxide Radical Dismutation by Cu-Zn Superoxide Dismutase Resulted in Remarkable Changes of its Localized Surface Plasmon Resonance. IRANIAN JOURNAL OF BIOTECHNOLOGY 2021; 19:e2741. [PMID: 34825014 PMCID: PMC8590718 DOI: 10.30498/ijb.2021.225724.2741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Superoxide dismutases (SODs) are categorized as antioxidant enzymes that are involved in many processes such as stress signalling responses and cell protection against free radical species. The primary function of SOD is the removal of produced radical species like superoxide ions in different physiological processes. There are various isozymes of SODs which are classified according to the metal cofactor in their active sites into four general types of Fe-SOD, Mn-SOD, Cu/Zn-SOD and Ni-SOD. Among metal nanoparticles, gold nanoparticles (AuNPs) are useful for biological purposes as sensing probe for determining critical analysis based on surface plasmon resonance and colorimetric method. In this study, the human Cu-Zn SOD expressed, purified, and its interaction with AuNPs based on a new colorimetric method was investigated. OBJECTIVES In this approach, a colorimetric detection method for SOD activity was developed based on the carboxylic stabilized AuNPs. MATERIAL AND METHODS The Ni-NTA Sepharose affinity column was performed for the purification process of enzyme. Following SOD purification, the enzyme activity in presence of AuNPs due to the possible etching in the presence of free radicals which are produced by riboflavin, methionine, Na2CO3 and potassium phosphate buffer, have been performed. In addition, Fluorescence spectroscopy analysis toward SOD and gold nanoparticle were performed. RESULTS Superoxide radicals generated from the enzymatic reaction would preferentially etch AuNPs and resulted in remarkable changes of localized surface plasmon resonance of AuNPs, which is reduced in the presence of SOD. Under the optimized experimental conditions assay (pH~7.8 and 25 ˚C), better selectivity and sensitivity toward SOD activity was shown. CONCLUSIONS In this context, an indirect new colorimetric method for determining of SOD activity based on gold nanoparticles (AuNPs) was evaluated. According to the presented result, it may be concluded that by scavenging of free superoxide radicals in the presence of SOD, the amount of AuNP absorbance can be replenished.
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Affiliation(s)
- Masoumeh Eghtedari
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Samaneh Jafari Porzani
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Masoud Javanmardi
- Department of Medical Biotechnology, Applied Biophotonics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mohammad Reza Ganjali
- Center of Excellence in Electrochemistry, University of Tehran, Tehran, Iran,
Biosensor Research Center, Endocrinology & Metabolism Molecular - Cellular Sciences Institute
| | - Saman Hosseinkhani
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
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7
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Zhang X, Zhou J, Gu Z, Zhang H, Gong Q, Luo K. Advances in nanomedicines for diagnosis of central nervous system disorders. Biomaterials 2020; 269:120492. [PMID: 33153757 DOI: 10.1016/j.biomaterials.2020.120492] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 10/18/2020] [Accepted: 10/23/2020] [Indexed: 02/08/2023]
Abstract
In spite of a great improvement in medical health services and an increase in lifespan, we have witnessed a skyrocket increase in the incidence of central nervous system (CNS) disorders including brain tumors, neurodegenerative diseases (Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, Huntington's disease), ischemic stroke, and epilepsy, which have seriously undermined the quality of life and substantially increased economic and societal burdens. Development of diagnostic methods for CNS disorders is still in the early stage, and the clinical outcomes suggest these methods are not ready for the challenges associated with diagnosis of CNS disorders, such as early detection, specific binding, sharp contrast, and continuous monitoring of therapeutic interventions. Another challenge is to overcome various barrier structures during delivery of diagnostic agents, especially the blood-brain barrier (BBB). Fortunately, utilization of nanomaterials has been pursued as a potential and promising strategy to address these challenges. This review will discuss anatomical and functional structures of BBB and transport mechanisms of nanomaterials across the BBB, and special emphases will be placed on the state-of-the-art advances in the development of nanomedicines from a variety of nanomaterials for diagnosis of CNS disorders. Meanwhile, current challenges and future perspectives in this field are also highlighted.
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Affiliation(s)
- Xun Zhang
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Jie Zhou
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, Claremont, CA, 91711, USA
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China.
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8
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The Antiaggregative and Antiamyloidogenic Properties of Nanoparticles: A Promising Tool for the Treatment and Diagnostics of Neurodegenerative Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:3534570. [PMID: 33123310 PMCID: PMC7582079 DOI: 10.1155/2020/3534570] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/23/2020] [Accepted: 09/25/2020] [Indexed: 12/11/2022]
Abstract
Due to the progressive aging of the society, the prevalence and socioeconomic burden of neurodegenerative diseases are predicted to rise. The most common neurodegenerative disorders nowadays, such as Parkinson's disease, Alzheimer's disease, and amyotrophic lateral sclerosis, can be classified as proteinopathies. They can be either synucleinopathies, amyloidopathies, tauopathies, or TDP-43-related proteinopathies; thus, nanoparticles with a potential ability to inhibit pathological protein aggregation and/or degrade already existing aggregates can be a promising approach in the treatment of neurodegenerative diseases. As it turns out, nanoparticles can be a double-edged sword; they can either promote or inhibit protein aggregation, depending on coating, shape, size, surface charge, and concentration. In this review, we aim to emphasize the need of a breakthrough in the treatment of neurodegenerative disorders and draw attention to nanomaterials, as they can also serve as a diagnostic tool for protein aggregates or can be used in a high-throughput screening for novel antiaggregative compounds.
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9
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Dekhili R, Cherni K, Liu H, Li X, Djaker N, Spadavecchia J. Aptamer-Gold(III) Complex Nanoparticles: A New Way to Detect Cu, Zn SOD Glycoprotein. ACS OMEGA 2020; 5:13851-13859. [PMID: 32566851 PMCID: PMC7301578 DOI: 10.1021/acsomega.0c01192] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 05/21/2020] [Indexed: 05/25/2023]
Abstract
Aptamers are small biomolecules composed of 20-100 nucleotides that recognize target molecules in three-dimensional structures. These natural targeting molecules have attracted interest in the biomedical field as biomarkers for cancer diagnostics. In this study, we investigated the interaction of a characteristic aptamer with its target protein, Cu, Zn superoxide dismutase (SOD 4), on a gold nanoparticle (AuNP) surface under experimental conditions. For this purpose, we applied two protocols to coat SOD 4 aptamer (APT) on the nanoparticle surface: carbodiimide chemistry (EDC/NHS) (Method ON) and a complexation methodology (Method IN). The nano-aptamer's interactions with SOD 4 were detected by UV-vis absorption and Raman spectroscopy in a range of protein concentrations (from 1 μM to 50 nM). We believe that the interaction is heavily dependent on the nature of the biomarker (SOD 4) and also on the steric arrangement of the aptamer on the gold nanoparticle surface. The lowest detectable concentration (limit of detection, LOD) was about 2 nM for APT IN PEG-AuNPs and 8 nM for APT ON PEG-AuNPs. For the first time, we demonstrated a very sensitive detection of SOD 4 in the nanomolar concentration range with new ways of biosensor synthesis (APT IN and ON), providing a very strong tool to understand the effect of aptamer conformation to detect SOD 4.
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Affiliation(s)
- Rawdha Dekhili
- CNRS,
UMR 7244, NBD-CSPBAT, Laboratory of Chemistry, Structures and Properties
of Biomaterials and Therapeutic Agents University Paris13, Sorbonne Paris Nord, Bobigny 93000, France
| | - Khaoula Cherni
- CNRS,
UMR 7244, NBD-CSPBAT, Laboratory of Chemistry, Structures and Properties
of Biomaterials and Therapeutic Agents University Paris13, Sorbonne Paris Nord, Bobigny 93000, France
| | - Hui Liu
- Department
of Hepatobiliary Surgery, Shenzhen University General Hospital &
Guangdong Provincial Key Laboratory of Regional Immunity and Diseases
& Carson International Cancer Shenzhen University General Hospital
& Shenzhen University Clinical Medical Academy Center, Shenzhen University, Shenzhen 518000, China
| | - Xiaowu Li
- Department
of Hepatobiliary Surgery, Shenzhen University General Hospital &
Guangdong Provincial Key Laboratory of Regional Immunity and Diseases
& Carson International Cancer Shenzhen University General Hospital
& Shenzhen University Clinical Medical Academy Center, Shenzhen University, Shenzhen 518000, China
| | - Nadia Djaker
- CNRS,
UMR 7244, NBD-CSPBAT, Laboratory of Chemistry, Structures and Properties
of Biomaterials and Therapeutic Agents University Paris13, Sorbonne Paris Nord, Bobigny 93000, France
| | - Jolanda Spadavecchia
- CNRS,
UMR 7244, NBD-CSPBAT, Laboratory of Chemistry, Structures and Properties
of Biomaterials and Therapeutic Agents University Paris13, Sorbonne Paris Nord, Bobigny 93000, France
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10
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Madhavan A, Juneja S, Moulick RG, Bhattacharya J. Growth Kinetics of Gold Nanoparticle Formation from Glycated Hemoglobin. ACS OMEGA 2020; 5:3820-3827. [PMID: 32149208 PMCID: PMC7057321 DOI: 10.1021/acsomega.9b02200] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 10/29/2019] [Indexed: 06/10/2023]
Abstract
Gold nanostructures have always been a subject of interest to physicists, chemists, and material scientists. Despite the extensive research associated with gold nanoparticles, their actual formation mechanism is still debatable. The nanoscale rearrangements leading to the formation of gold nanostructures of definite size and shape are contradictory. The study presented in here details out a mechanism for gold nanoparticle formation in the presence of a biological template. The kinetics of gold nanostructure formation was studied using glycated hemoglobin as a biological template as well as the reducing agent. Particle formation was studied in a time- and temperature-dependent manner using different biophysical techniques. Here, we report for the first time spontaneous formation of gold nanoflowers which gradually dissociates to form smaller spherical particles. In addition, our experiments conclusively substantiate the existing postulations on gold nanoparticle formation from relatively larger precursor structures of gold and contradict with the popular nucleation growth mechanism.
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Affiliation(s)
- Ashwathi
Asha Madhavan
- School
of Biotechnology, Jawaharlal Nehru University, New Mehrauli Road, New Delhi 110067, India
| | - Subhavna Juneja
- School
of Biotechnology, Jawaharlal Nehru University, New Mehrauli Road, New Delhi 110067, India
| | - Ranjita Ghosh Moulick
- Amity
Institute of Integrative Sciences and Health, Amity University Gurgaon, Panchgaon, Haryana 122413, India
| | - Jaydeep Bhattacharya
- School
of Biotechnology, Jawaharlal Nehru University, New Mehrauli Road, New Delhi 110067, India
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11
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Yadav N, Chhillar AK, Rana JS. Detection of pathogenic bacteria with special emphasis to biosensors integrated with AuNPs. SENSORS INTERNATIONAL 2020. [DOI: 10.1016/j.sintl.2020.100028] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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12
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Singh R, Geetanjali. Nanoneuromedicines for Neurodegenerative Diseases. NANOSCIENCE &NANOTECHNOLOGY-ASIA 2018; 9:58-63. [DOI: 10.2174/2210681208666171211160433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 06/14/2017] [Accepted: 09/18/2017] [Indexed: 06/15/2023]
Abstract
Introduction:
Neurodegenerative disease is a collective term for a number of diseases
that affect the neurons in the human brain. The location of the neuronal loss in the brain leads to the
specified disease based on the progression of the clinical symptoms. No drugs are available for
complete cure of these diseases. Most of the drugs only slow down the progression of neuronal
damage. The combination of drugs with nanotechnology gave a new promising hope for the treatment
of neurological disorders. Nanomedicines are extremely useful for safe, effective, target oriented
and sustained delivery. Due to their size in nanometer, they possess distinct and improved
properties in comparison to their bulk counterpart. The utility of nanomedicines in neurological
disorders including neurodegenerative diseases constitutes nanoneuromedicines.
Conclusion:
In this article, a comprehensive overview of the application of nanoneuromedicines in
neurodegenerative diseases such as Alzheimer’s Disease (AD), Parkinson’s Disease (PD) and
Amyotrophic Lateral Sclerosis (ALS) is provided.
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Affiliation(s)
- Ram Singh
- Department of Applied Chemistry, Delhi Technological University, Delhi-110 042, India
| | - Geetanjali
- Department of Chemistry, Kirori Mal College, University of Delhi, Delhi-110 007, India
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13
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Asha Madhavan A, Juneja S, Sen P, Ghosh Moulick R, Bhattacharya J. Gold Nanoparticle-Based Detection of Low Molecular Weight AGEs from In Vitro Glycated Haemoglobin A0 Samples. NANOSCALE RESEARCH LETTERS 2018; 13:390. [PMID: 30511188 PMCID: PMC6277258 DOI: 10.1186/s11671-018-2812-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 11/19/2018] [Indexed: 06/09/2023]
Abstract
Protein glycation is a major biochemical event that takes place in the plasma of diabetic patients due to increased sugar levels. Extensive glycation leads to the formation of advanced glycation end products (AGEs) that is well known for having detrimental effects on diabetic patients. In the current work, we have glycated the physiologically important protein Haemoglobin A0 in vitro to study AGE formation and activity by using them as a template for gold nanoparticle (GNPs) synthesis. It was found that the surface plasmon resonance of synthesised GNPs showed high correlation with the extent of glycation. On fractionation, the glycated Haemoglobin A0 segregated into two distinct population of products, one consisting of proteinaceous, cross-linked larger fragments of Haemoglobin A0 and a second population of non-proteinaceous low molecular weight AGEs. Only low molecular weight AGEs contributed to synthesis of GNPs upon using the fractions as a template, substantiating the principle of proposed GNP-based assay. Owing to its physiological importance, AGEs can be used as a diagnostic means for diabetes and its associated complications. In this study, we have employed the high reactivity of AGEs for the development of a GNP-based novel colorimetric sensor to enable their detection. Our proposed GNP-based sensing could have high clinical significance in detecting diabetes and its associated complexities.
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Affiliation(s)
- A. Asha Madhavan
- School of Biotechnology, Jawaharlal Nehru University, New Mehrauli Road, New Delhi, 110067 India
| | - S. Juneja
- School of Biotechnology, Jawaharlal Nehru University, New Mehrauli Road, New Delhi, 110067 India
| | - P. Sen
- School of Physical Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi, 110067 India
| | - R. Ghosh Moulick
- Amity Institute of Integrative sciences and Health, Amity University Gurgaon, Manesar, Haryana 122413 India
| | - J. Bhattacharya
- School of Biotechnology, Jawaharlal Nehru University, New Mehrauli Road, New Delhi, 110067 India
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14
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Jazayeri MH, Aghaie T, Avan A, Vatankhah A, Ghaffari MRS. Colorimetric detection based on gold nano particles (GNPs): An easy, fast, inexpensive, low-cost and short time method in detection of analytes (protein, DNA, and ion). SENSING AND BIO-SENSING RESEARCH 2018. [DOI: 10.1016/j.sbsr.2018.05.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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15
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Wen R, Banik B, Pathak RK, Kumar A, Kolishetti N, Dhar S. Nanotechnology inspired tools for mitochondrial dysfunction related diseases. Adv Drug Deliv Rev 2016; 99:52-69. [PMID: 26776231 PMCID: PMC4798867 DOI: 10.1016/j.addr.2015.12.024] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 11/29/2015] [Accepted: 12/31/2015] [Indexed: 02/07/2023]
Abstract
Mitochondrial dysfunctions are recognized as major factors for various diseases including cancer, cardiovascular diseases, diabetes, neurological disorders, and a group of diseases so called "mitochondrial dysfunction related diseases". One of the major hurdles to gain therapeutic efficiency in diseases where the targets are located in the mitochondria is the accessibility of the targets in this compartmentalized organelle that imposes barriers toward internalization of ions and molecules. Over the time, different tools and techniques were developed to improve therapeutic index for mitochondria acting drugs. Nanotechnology has unfolded as one of the logical and encouraging tools for delivery of therapeutics in controlled and targeted manner simultaneously reducing side effects from drug overdose. Tailor-made nanomedicine based therapeutics can be an excellent tool in the toolbox for diseases associated with mitochondrial dysfunctions. In this review, we present an extensive coverage of possible therapeutic targets in different compartments of mitochondria for cancer, cardiovascular, and mitochondrial dysfunction related diseases.
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Affiliation(s)
- Ru Wen
- NanoTherapeutics Research Laboratory, Department of Chemistry, University of Georgia, Athens, GA 30602, United States
| | - Bhabatosh Banik
- NanoTherapeutics Research Laboratory, Department of Chemistry, University of Georgia, Athens, GA 30602, United States
| | - Rakesh K Pathak
- NanoTherapeutics Research Laboratory, Department of Chemistry, University of Georgia, Athens, GA 30602, United States
| | - Anil Kumar
- NanoTherapeutics Research Laboratory, Department of Chemistry, University of Georgia, Athens, GA 30602, United States
| | - Nagesh Kolishetti
- NanoTherapeutics Research Laboratory, Department of Chemistry, University of Georgia, Athens, GA 30602, United States; Partikula LLC, Sunrise, FL 33326, United States
| | - Shanta Dhar
- NanoTherapeutics Research Laboratory, Department of Chemistry, University of Georgia, Athens, GA 30602, United States.
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16
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Ríos-Corripio MA, Arcila-Lozano LS, Garcia-Perez BE, Jaramillo-Flores ME, Hernández-Pérez AD, Carlos-Martínez A, Rosales-Perez M, Rojas-López M. Fluorescent Gold Nanoparticle-Based Bioconjugate for the Detection ofSalmonella. ANAL LETT 2016. [DOI: 10.1080/00032719.2015.1128944] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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17
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Kim HY, Choi I. Ultrafast colorimetric determination of predominant protein structure evolution with gold nanoplasmonic particles. NANOSCALE 2016; 8:1952-1959. [PMID: 26500087 DOI: 10.1039/c5nr06517h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The intracellular and extracellular accumulation of disordered proteins and aggregated proteins occurs in many protein conformational diseases, such as aging-related neurodegeneration and alcoholic liver diseases. However, the conventional methods to study protein structural changes are limited for the rapid detection and monitoring of protein aggregation because of long incubation times (i.e., usually several days), complicated sample pretreatment steps, and expensive instrumentation. Here, we describe an ultrafast colorimetric method for the real-time monitoring of protein structure evolution and the determination of predominant structures via nanoparticle-assisted protein aggregation. During the aggregation process, nanoparticles act as nucleation cores, which form networks depending on the structures of the protein aggregates, and accelerate the kinetics of the protein aggregation. Simultaneously, these nanoparticles exhibit colorimetric responses according to their embedded shapes (e.g., fibrillar and amorphous) on the protein aggregates. We observed distinct spectral shifts and concomitant colorimetric responses of concentration- and type-dependent protein aggregation with the naked eye within a few minutes (<2 min) under acidic conditions. Moreover, the morphological transitions from small aggregates to larger aggregates of nanoparticle-assisted protein aggregates were visualized with dark-field microscope imaging, which show a similar trend with that of protein aggregates formed without the aid of nanoparticles. Finally we show that our proposed method can be utilized to screen the protein aggregation propensity under a variety of conditions such as different pH levels, high temperature, and chemicals. These findings suggest that the proposed method is an easy way to study the molecular biophysics of protein aggregation and to rapidly screen anti-aggregation drugs for protein conformational diseases.
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Affiliation(s)
- Hye Young Kim
- Department of Life Science, University of Seoul, 163 Siripdae-ro, Dongdaemun-gu, Seoul 130-743, Republic of Korea.
| | - Inhee Choi
- Department of Life Science, University of Seoul, 163 Siripdae-ro, Dongdaemun-gu, Seoul 130-743, Republic of Korea.
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18
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Kang J, Zhang Y, Li X, Miao L, Wu A. A Rapid Colorimetric Sensor of Clenbuterol Based on Cysteamine-Modified Gold Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2016; 8:1-5. [PMID: 26673452 DOI: 10.1021/acsami.5b09079] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Demonstrated was a simple visual and rapid colorimetric sensor for detection of clenbuterol (CLB) based on gold nanoparticles (AuNPs) modified with cysteamine (CA) and characterized by transmission electron microscopy (TEM), dynamic light scattering (DLS), UV-vis. The solution color from red to blue gray with increasing clenbuterol concentration resulted from the aggregation of AuNPs. The detection limit of clenbuterol is 50 nM by naked eyes. The selectivity of CA-AuNPs detection system for clenbuterol is excellent compared with other interferents in food. This sensor has been successfully applied to detect clenbuterol in real blood sample.
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Affiliation(s)
- Jingyan Kang
- Faculty of Science, Ningbo University , Ningbo 315211, China
- Key Laboratory of Magnetic Materials and Devices, and Division of Functional Materials and Nanodevices, Ningbo Institute of Materials Technology and Engineering , Ningbo 315201, China
| | - Yujie Zhang
- Key Laboratory of Magnetic Materials and Devices, and Division of Functional Materials and Nanodevices, Ningbo Institute of Materials Technology and Engineering , Ningbo 315201, China
| | - Xing Li
- Faculty of Science, Ningbo University , Ningbo 315211, China
| | - Lijing Miao
- Key Laboratory of Magnetic Materials and Devices, and Division of Functional Materials and Nanodevices, Ningbo Institute of Materials Technology and Engineering , Ningbo 315201, China
| | - Aiguo Wu
- Key Laboratory of Magnetic Materials and Devices, and Division of Functional Materials and Nanodevices, Ningbo Institute of Materials Technology and Engineering , Ningbo 315201, China
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19
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Ambesh P, Angeli DG. Nanotechnology in neurology: Genesis, current status, and future prospects. Ann Indian Acad Neurol 2015; 18:382-6. [PMID: 26713006 PMCID: PMC4683873 DOI: 10.4103/0972-2327.169535] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Nanotechnology is a promising, novel field of technological development. There is great potential in research and clinical applications for neurological diseases. Here we chronicle the inception of nanotechnology, discuss its integration with neurology, and highlight the challenges in current application. Some of the problems involving practical use of neuronanotechnology are direct biological toxicity, visualization of the nanodevice, and the short life expectancy of nanomachinery. Neuron cell therapy is an upcoming field for the treatment of challenging problems in neurology. Peptide nanofibers based on amphiphilic molecules have been developed that can autoregulate their structure depending on the conditions of the surrounding milieu. Such frameworks are promising for serving as drug delivery systems or communication bridges between damaged neurons. For common disabling diseases such as Alzheimer's disease (AD), Parkinson's disease (PD), amyotrophic lateral sclerosis (ALS), and multiple sclerosis (MS), recent developments have seen revolutionary nanotech-based novelties, which are discussed here in detail. Bioimaging integrated with nanoneuromedicine has opened up new doors for cancer and infection therapeutics.
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Affiliation(s)
- Paurush Ambesh
- Department of Internal Medicine, Moti Lal Nehru Medical College, Allahabad, Uttar Pradesh, India
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20
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Agarwal S, Mishra P, Shivange G, Kodipelli N, Moros M, de la Fuente JM, Anindya R. Citrate-capped gold nanoparticles for the label-free detection of ubiquitin C-terminal hydrolase-1. Analyst 2015; 140:1166-73. [DOI: 10.1039/c4an01935k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Ubiquitin C-terminal hydrolase-1 (UCH-L1) is a specific neuronal endoprotease that cleaves the peptide bond between ubiquitin molecules.
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Affiliation(s)
- Srishti Agarwal
- Department of Biotechnology
- Indian Institute of Technology Hyderabad
- Yeddumailaram-502205
- India
| | - Priyanka Mishra
- Department of Biotechnology
- Indian Institute of Technology Hyderabad
- Yeddumailaram-502205
- India
| | - Gururaj Shivange
- Department of Biotechnology
- Indian Institute of Technology Hyderabad
- Yeddumailaram-502205
- India
| | - Naveena Kodipelli
- Department of Biotechnology
- Indian Institute of Technology Hyderabad
- Yeddumailaram-502205
- India
| | - María Moros
- Nanotherapy and Nanodiagnostics Group
- Instituto de Nanociencia de Aragón (INA)
- Universidad de Zaragoza
- Zaragoza
- Spain
| | - Jesús M. de la Fuente
- Nanotherapy and Nanodiagnostics Group
- Instituto de Nanociencia de Aragón (INA)
- Universidad de Zaragoza
- Zaragoza
- Spain
| | - Roy Anindya
- Department of Biotechnology
- Indian Institute of Technology Hyderabad
- Yeddumailaram-502205
- India
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21
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Siddiquee S, Rovina K, Yusof NA, Rodrigues KF, Suryani S. Nanoparticle-enhanced electrochemical biosensor with DNA immobilization and hybridization of Trichoderma harzianum gene. SENSING AND BIO-SENSING RESEARCH 2014. [DOI: 10.1016/j.sbsr.2014.06.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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22
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Gendelman HE, Mosley RL, Boska MD, McMillan J. The promise of nanoneuromedicine. Nanomedicine (Lond) 2014; 9:171-6. [PMID: 24552556 DOI: 10.2217/nnm.14.17] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Howard E Gendelman
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5800, USA.
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23
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Xia XD, Huang HW. Using unmodified Au nanoparticles as colorimetric probes for TNT based on their competitive reactions with melamine. CHINESE CHEM LETT 2014. [DOI: 10.1016/j.cclet.2014.03.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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24
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Nouira W, Maaref A, Elaissari H, Vocanson F, Siadat M, Jaffrezic-Renault N. Enhanced response of a proteinase K-based conductometric biosensor using nanoparticles. SENSORS 2014; 14:13298-307. [PMID: 25057139 PMCID: PMC4168465 DOI: 10.3390/s140713298] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 06/17/2014] [Accepted: 07/17/2014] [Indexed: 01/26/2023]
Abstract
Proteinases are involved in a multitude of important physiological processes, such as protein metabolism. For this reason, a conductometric enzyme biosensor based on proteinase K was developed using two types of nanoparticles (gold and magnetic). The enzyme was directly adsorbed on negatively charged nanoparticles and then deposited and cross-linked on a planar interdigitated electrode (IDE). The biosensor was characterized with bovine serum albumin (BSA) as a standard protein. Higher sensitivity was obtained using gold nanoparticles. The linear range for BSA determination was then from 0.5 to 10 mg/L with a maximum response of 154 μs. These results are greater than that found without any nanoparticles (maximum response of 10 μs). The limit of detection (LOD) was 0.3 mg/L. An inter-sensor reproducibility of 3.5% was obtained.
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Affiliation(s)
- Wided Nouira
- Institute of Analytical Sciences, University of Lyon, La Doua Street, 5, 69622 Villeurbanne, France.
| | - Abderrazak Maaref
- Laboratory of Interfaces and Advanced Materials, University of Monastir, Avenue of Environment, 5019 Monastir, Tunisia.
| | - Hamid Elaissari
- University of Lyon, CNRS, UMR 5007, LAGEP-CPE, 43 Bd. 11 Novembre 1918, Villeurbanne, France.
| | - Francis Vocanson
- Hubert Curien Laboratory, University of Lyon, F-42023 Saint-Etienne, France.
| | - Maryam Siadat
- LASC, ISEA, University of Metz, 7 Marconi Street, 57070 Metz, France.
| | - Nicole Jaffrezic-Renault
- Institute of Analytical Sciences, University of Lyon, La Doua Street, 5, 69622 Villeurbanne, France.
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25
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Martirosyan A, Schneider YJ. Engineered nanomaterials in food: implications for food safety and consumer health. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2014; 11:5720-50. [PMID: 24879486 PMCID: PMC4078545 DOI: 10.3390/ijerph110605720] [Citation(s) in RCA: 176] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 04/02/2014] [Accepted: 05/14/2014] [Indexed: 01/08/2023]
Abstract
From the current state-of-the-art, it is clear that nanotechnology applications are expected to bring a range of benefits to the food sector aiming at providing better quality and conservation. In the meantime, a growing number of studies indicate that the exposure to certain engineered nanomaterials (ENMs) has a potential to lead to health complications and that there is a need for further investigations in order to unravel the biological outcomes of nanofood consumption. In the current review, we summarize the existing data on the (potential) use of ENMs in the food industry, information on the toxicity profiles of the commonly applied ENMs, such as metal (oxide) nanoparticles (NPs), address the potential food safety implications and health hazards connected with the consumption of nanofood. A number of health complications connected with the human exposure to ENMs are discussed, demonstrating that there is a real basis for the arisen concern not only connected with the gut health, but also with the potency to lead to systemic toxicity. The toxicological nature of hazard, exposure levels and risk to consumers from nanotechnology-derived food are on the earliest stage of investigation and this review also highlights the major gaps that need further research and regulation.
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Affiliation(s)
- Alina Martirosyan
- Laboratory of Cellular, Nutritional and Toxicological Biochemistry, Institute of Life Sciences (ISV) & UCLouvain, Louvain-la-Neuve B1348, Belgium.
| | - Yves-Jacques Schneider
- Laboratory of Cellular, Nutritional and Toxicological Biochemistry, Institute of Life Sciences (ISV) & UCLouvain, Louvain-la-Neuve B1348, Belgium.
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27
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Hong S, Park S, Park J, Yi J. Effect of end group modification of DNA-functionalized gold nanoparticles on cellular uptake in HepG2 cells. Colloids Surf B Biointerfaces 2013; 112:415-20. [DOI: 10.1016/j.colsurfb.2013.08.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 08/05/2013] [Accepted: 08/18/2013] [Indexed: 11/26/2022]
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Wild-type Cu/Zn superoxide dismutase stabilizes mutant variants by heterodimerization. Neurobiol Dis 2013; 62:479-88. [PMID: 24200866 DOI: 10.1016/j.nbd.2013.10.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Revised: 09/26/2013] [Accepted: 10/25/2013] [Indexed: 12/14/2022] Open
Abstract
Mutations in the gene encoding Cu/Zn superoxide dismutase (SOD1) are responsible for a subset of amyotrophic lateral sclerosis cases presumably by the acquisition of as yet unknown toxic properties. Additional overexpression of wild-type SOD1 in mutant SOD1 transgenic mice did not improve but rather accelerated the disease course. Recently, it was documented that the presence of wild-type SOD1 (SOD(WT)) reduced the aggregation propensity of mutant SOD1 by the formation of heterodimers between mutant and SOD1(WT) and that these heterodimers displayed at least a similar toxicity in cellular and animal models. In this study we investigated the biochemical and biophysical properties of obligate SOD1 dimers that were connected by a peptide linker. Circular dichroism spectra indicate an increased number of unstructured residues in SOD1 mutants. However, SOD1(WT) stabilized the folding of heterodimers compared to mutant homodimers as evidenced by an increase in resistance against proteolytic degradation. Heterodimerization also reduced the affinity of mutant SOD1 to antibodies detecting misfolded SOD1. In addition, the formation of obligate dimers resulted in a detection of substantial dismutase activity even of the relatively labile SOD1(G85R) mutant. These data indicate that soluble, dismutase-active SOD1 dimers might contribute at least partially to mutant SOD1 toxicity.
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29
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Choi I, Lee LP. Rapid detection of Aβ aggregation and inhibition by dual functions of gold nanoplasmic particles: catalytic activator and optical reporter. ACS NANO 2013; 7:6268-6277. [PMID: 23777418 DOI: 10.1021/nn402310c] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
One of the primary pathological hallmarks of Alzheimer's diseases (AD) is amyloid-β (Aβ) aggregation and its extracellular accumulation. However, current in vitro Aβ aggregation assays require time-consuming and labor-intensive steps, which delay the process of drug discovery and understanding the mechanism of Aβ induced neurotoxicity. Here, we propose a rapid detection method for studying Aβ aggregation and inhibition under an optimized acidic perturbation condition by dual functions of gold nanoplasmonic particles (GNPs): (1) catalytic activator and (2) optical reporter. Because of roles of GNPs as effective nucleation sites for fast-catalyzing Aβ aggregation and colorimetric optical reporters for tracking Aβ aggregation, we accomplished the fast aggregation assay in less than 1 min by the naked eyes. Our detection method is based on spontaneous clustering of unconjugated (unmodified) GNPs along with the aggregated Aβ network under an aggregation-promoting condition. As a proof-of-concept demonstration, we employed the acidic perturbation permitting rapid cooperative assemblies of GNPs and Aβ peptides via their surface charge modulation. Under the optimized acidic perturbation condition around pH 2 to 3, we characterized the concentration-dependent colorimetric responses for aggregation at physiologically relevant Aβ concentration levels (from 100 μM to 10 nM). We also demonstrated the GNP/acidic condition-based rapid inhibition assay of Aβ aggregation by using well-known binding reagents such as antibody and serum albumin. The proposed methodology can be a powerful alternative method for screening drugs for AD as well as studying molecular biophysics of protein aggregations, and further extended to explore other protein conformational diseases such as neurodegenerative disease.
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Affiliation(s)
- Inhee Choi
- Berkeley Sensor and Actuator Center, Department of Bioengineering, Department of Electrical Engineering and Computer Science, University of California at Berkeley, Berkeley, California 94720, USA
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30
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Hemmateenejad B, Dorostkar S, Shakerizadeh-Shirazi F, Shamsipur M. pH-independent optical sensing of heparin based on ionic liquid-capped gold nanoparticles. Analyst 2013; 138:4830-7. [PMID: 23826612 DOI: 10.1039/c3an36895e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A simple pH-independent optical method for the sensing of heparin, as a biomedically important polyionic drug, based on aggregation of gold nanoparticles (AuNPs) is described. The polyanionic heparin induces the aggregation of positively charged ionic liquid stabilized AuNPs, which results in a shift in the surface plasmon band and a consequent color change of the AuNPs from red to blue. The color change was monitored using UV-vis spectrophotometry and image analysis methods. The aggregation was confirmed by transmission electron microscopic measurements. The degree of aggregation was found to be proportional to the concentration of the added heparin, allowing its quantitative detection. The change in the absorbance and color-value has been used to monitor the concentration of heparin. This optical method can quantify heparin as low as 0.010 μg mL(-1) and the calibration is linear for a wide range of concentration.
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31
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Zhou Y, Wang P, Su X, Zhao H, He Y. Colorimetric detection of ractopamine and salbutamol using gold nanoparticles functionalized with melamine as a probe. Talanta 2013; 112:20-5. [PMID: 23708531 DOI: 10.1016/j.talanta.2013.03.033] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 03/14/2013] [Accepted: 03/15/2013] [Indexed: 12/20/2022]
Abstract
A highly selective and sensitive method is developed for colorimetric detection of ractopamine and salbutamol using gold nanoparticles (AuNPs) functionalized with melamine (MA), respectively. The presence of these β-agonists induces the aggregation of gold nanoparticles through hydrogen-bonding interaction that was accompanied by a distinct change in color and optical properties, which could be monitored by a UV-vis spectrophotometer or even naked eyes. This process caused a significant decrease in the absorbance ratio (A670 nm/A520 nm) of melamine-gold nanoparticles (MA-AuNPs), and the color changed from wine red to blue. The systems exhibited a wide liner range, from 1×10(-10)M to 5×10(-7)mol/L with a correlation coefficient of 0.995 for ractopamine, and 1×10(-10)M to 1×10(-5)mol/L with a correlation coefficient of 0.996 for salbutamol, with measuring the absorbance ratio (A670 nm/A520 nm). The detection limit of these β-agonists is as low as 1×10(-11)mol/L. Particularly, the developed method has been applied to the analysis of real swine feed samples and has achieved satisfactory results.
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Affiliation(s)
- Ying Zhou
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, 19A YuQuan Road, Beijing 100049, China
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32
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Nouira W, Maaref A, Elaissari H, Vocanson F, Siadat M, Jaffrezic-Renault N. Comparative study of conductometric glucose biosensor based on gold and on magnetic nanoparticles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:298-303. [DOI: 10.1016/j.msec.2012.08.043] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Revised: 07/27/2012] [Accepted: 08/29/2012] [Indexed: 01/26/2023]
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33
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Real-time analysis and direct observations of different superoxide dismutase (SOD1) molecules bindings to aggregates in temporal evolution step. Colloids Surf B Biointerfaces 2013; 101:266-71. [DOI: 10.1016/j.colsurfb.2012.06.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 06/18/2012] [Accepted: 06/19/2012] [Indexed: 11/19/2022]
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34
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Zhou Z, Wei W, Zhang Y, Liu S. DNA-responsive disassembly of AuNP aggregates: influence of nonbase-paired regions and colorimetric DNA detection by exonuclease III aided amplification. J Mater Chem B 2013; 1:2851-2858. [DOI: 10.1039/c3tb20206b] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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35
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Label-free colorimetric detection of picomolar amounts of hydrazine using a gold nanoparticle-based assay. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2012. [DOI: 10.1007/s13738-012-0186-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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36
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Zhang Y, Hu J, Zhang CY. Sensitive detection of transcription factors by isothermal exponential amplification-based colorimetric assay. Anal Chem 2012; 84:9544-9. [PMID: 23050558 DOI: 10.1021/ac3024087] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Transcription factors regulate gene expression by binding to specific DNA sequences within the regulatory regions of genes and have become potential targets in clinical diagnosis and drug development. However, traditional approaches for the detection of transcription factors are usually laborious and time-consuming with a low sensitivity. Here, we develop an isothermal exponential amplification reaction (EXPAR)-based colorimetric assay for simple and sensitive detection of transcription factor NF-κB p50. In this assay, the presence of NF-κB p50 is converted to the reporter oligonucleotides through protein-DNA interaction, exonuclease III digestion, and isothermal exponential amplification. The subsequent sandwich hybridization of the reporter oligonucleotides with the gold nanoparticle (AuNP)-labeled DNA probes generates a red-to-purple color change, allowing the visual detection of NF-κB p50 with the naked eye. Notably, this method converts the detection of transcription factors to the detection of DNA without the requirement of DNA marker-linked antibodies in the case of immuno-PCR and can sensitively measure NF-κB p50 with a detection limit of 3.8 pM, which has improved by as much as 4 orders of magnitude as compared with the conventional AuNP-based colorimetric assay and the label-free luminescence assay and up to 4 orders of magnitude as compared with fluorescence resonance energy transfer (FRET)-based assay as well. Importantly, this method can be used to measure TNF-α-induced endogenous NF-κB p50 in HeLa cell nuclear extracts and might be further applied for the detection of various DNA-binding proteins and aptamer-binding molecules.
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Affiliation(s)
- Yan Zhang
- Single-Molecule Detection and Imaging Laboratory, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Guangdong 518055, China
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37
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Tellechea E, Cornago I, Ciaurriz P, Moran JF, Asensio AC. Conjugation of active iron superoxide dismutase to nanopatterned surfaces. IEEE Trans Nanobioscience 2012; 11:176-80. [PMID: 22665394 DOI: 10.1109/tnb.2012.2194742] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Superoxide dismutase enzymes (SODs) are an essential part of the first line of cellular defense system against free radicals species. They catalyze the dismutation of superoxide radicals into oxygen and hydrogen peroxide. Although several studies have examined the attachment of superoxide dismutases to nanoparticles and nanostructures, never has been used a member of the Fe/MnSOD family. In this study, the behavior of plant origin FeSOD enzyme on three different nanopatterned surfaces was investigated as a function of covalent and electrostatic binding. Fluorescence microscopy was used to demonstrate that the protein is attached only to the gold layer. We also examined the activity of SOD by a colorimetric assay, and we have shown that the enzyme remains active after attachment to the three different surfaces under both kind of binding (electrostatic and covalent). This methodology could be useful for those who want to functionalize nanostructures with a SOD enzyme and test the activity. This process could be of great interest for the development of peroxynitrite and superoxide biosensors.
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Affiliation(s)
- Edurne Tellechea
- FideNa (Foundation for r+d in nanotechnology), Centro Jerónimo de Ayanz, C/Tajonar s/n, E-31006 Pamplona, Navarra, Spain
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Zhen Z, Tang LJ, Long H, Jiang JH. Enzymatic Immuno-Assembly of Gold Nanoparticles for Visualized Activity Screening of Histone-Modifying Enzymes. Anal Chem 2012; 84:3614-20. [DOI: 10.1021/ac203385v] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Zhen Zhen
- State Key Laboratory of Chemo/Bio-Sensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Li-Juan Tang
- State Key Laboratory of Chemo/Bio-Sensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Haoxu Long
- State Key Laboratory of Chemo/Bio-Sensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Jian-Hui Jiang
- State Key Laboratory of Chemo/Bio-Sensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
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Choi I, Yang YI, Jeong E, Kim K, Hong S, Kang T, Yi J. Colorimetric tracking of protein structural evolution based on the distance-dependent light scattering of embedded gold nanoparticles. Chem Commun (Camb) 2012; 48:2286-8. [PMID: 22218614 DOI: 10.1039/c2cc17174k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this communication, we describe a new, simplified colorimetric method for in situ tracking of structural evolution of Cu/Zn-superoxide dismutase (SOD1) aggregates, based on changes in plasmonic coupling between gold nanoparticles (GNPs) embedded along the structural backbone of the SOD1 aggregates.
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Affiliation(s)
- Inhee Choi
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 151-742, Korea
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40
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Duncan TV. Applications of nanotechnology in food packaging and food safety: barrier materials, antimicrobials and sensors. J Colloid Interface Sci 2011; 363:1-24. [PMID: 21824625 PMCID: PMC7094330 DOI: 10.1016/j.jcis.2011.07.017] [Citation(s) in RCA: 757] [Impact Index Per Article: 58.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Revised: 07/05/2011] [Accepted: 07/06/2011] [Indexed: 12/12/2022]
Abstract
In this article, several applications of nanomaterials in food packaging and food safety are reviewed, including: polymer/clay nanocomposites as high barrier packaging materials, silver nanoparticles as potent antimicrobial agents, and nanosensors and nanomaterial-based assays for the detection of food-relevant analytes (gasses, small organic molecules and food-borne pathogens). In addition to covering the technical aspects of these topics, the current commercial status and understanding of health implications of these technologies are also discussed. These applications were chosen because they do not involve direct addition of nanoparticles to consumed foods, and thus are more likely to be marketed to the public in the short term.
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41
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Park JS, Choi IH, Kim YH, Yi JH. Colorimetric Determination of pH Values using Silver Nanoparticles Conjugated with Cytochrome c. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.9.3433] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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42
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Hong S, Lee S, Yi J. Sensitive and molecular size-selective detection of proteins using a chip-based and heteroliganded gold nanoisland by localized surface plasmon resonance spectroscopy. NANOSCALE RESEARCH LETTERS 2011; 6:336. [PMID: 21711878 PMCID: PMC3211424 DOI: 10.1186/1556-276x-6-336] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Accepted: 04/14/2011] [Indexed: 05/31/2023]
Abstract
A highly sensitive and molecular size-selective method for the detection of proteins using heteroliganded gold nanoislands and localized surface plasmon resonance (LSPR) is described. Two different heteroligands with different chain lengths (3-mercaptopionicacid and decanethiol) were used in fabricating nanoholes for the size-dependent separation of a protein in comparison with its aggregate. Their ratios on gold nanoisland were optimized for the sensitive detection of superoxide dismutase (SOD1). This protein has been implicated in the pathology of amyotrophic lateral sclerosis (ALS). Upon exposure of the optimized gold nanoisland to a solution of SOD1 and aggregates thereof, changes in the LSPR spectra were observed which are attributed to the size-selective and covalent chemical binding of SOD1 to the nanoholes. With a lower detection limit of 1.0 ng/ml, the method can be used to selectively detect SOD1 in the presence of aggregates at the molecular level.
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Affiliation(s)
- Surin Hong
- World Class University (WCU) Program of Chemical Convergence for Energy & Environment (C2E2), School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea
| | - Suseung Lee
- World Class University (WCU) Program of Chemical Convergence for Energy & Environment (C2E2), School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea
| | - Jongheop Yi
- World Class University (WCU) Program of Chemical Convergence for Energy & Environment (C2E2), School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea
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43
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Xue W, Zhang G, Zhang D. A sensitive colorimetric label-free assay for trypsin and inhibitor screening with gold nanoparticles. Analyst 2011; 136:3136-41. [DOI: 10.1039/c1an15224f] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Nguyen DT, Kim DJ, Kim KS. Controlled synthesis and biomolecular probe application of gold nanoparticles. Micron 2010; 42:207-27. [PMID: 20952201 DOI: 10.1016/j.micron.2010.09.008] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2010] [Revised: 09/21/2010] [Accepted: 09/21/2010] [Indexed: 02/08/2023]
Abstract
In addition to their optical properties, the ability of gold nanoparticles (Au NPs) to generate table immobilization of biomolecules, whilst retaining their bioactivities is a major advantage to apply them as biosensors. Optical biosensors using Au NPs are simple, fast and reliable and, recently, they have been moving from laboratory study to the point of practical use. The optical properties of Au NPs strongly depend on their size, shape, degree of aggregation and the functional groups on their surface. Rapid advances in the field of nanotechnology offer us a great opportunity to develop the controllable synthesis and modification of Au NPs as well as to study on their properties and applications. The size-controlled growth of Au NPs requires the isotropic growth on the surface of Au nuclei whereas anisotropic growth will induce the formation of Au NPs of varying shape. Functionalized Au NPs provide sensitive and selective biosensors for the detection of many targets, including metal ions, small organic compounds, protein, DNA, RNA and cell based on their optical, electrical or electrochemical signals. In this review, we will discuss the size- and shape-controlled growth and functionalization of Au NPs to obtain Au nanoprobes. The basis of the optical detection of Au nanoprobes and their applications in nucleic acid, protein detection and cell imaging are also introduced.
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Affiliation(s)
- Dung The Nguyen
- Department of Chemical Engineering, Kangwon National University, Chuncheon, Kangwon-Do 200-701, Republic of Korea
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45
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Rahaie M, Kazemi S. Lectin-based Biosensors: As Powerful Tools in Bioanalytical Applications. ACTA ACUST UNITED AC 2010. [DOI: 10.3923/biotech.2010.428.443] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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46
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Choi I, Yang YI, Song HD, Lee JS, Kang T, Sung JJ, Yi J. Lipid molecules induce the cytotoxic aggregation of Cu/Zn superoxide dismutase with structurally disordered regions. Biochim Biophys Acta Mol Basis Dis 2010; 1812:41-8. [PMID: 20837142 DOI: 10.1016/j.bbadis.2010.09.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2010] [Revised: 08/18/2010] [Accepted: 09/07/2010] [Indexed: 02/02/2023]
Abstract
Cu/Zn-superoxide dismutase (SOD1) is present in the cytosol, nucleus, peroxisomes and mitochondrial intermembrane space of human cells. More than 114 variants of human SOD1 have been linked to familial amyotrophic lateral sclerosis (ALS), which is also known as Lou Gehrig's disease. Although the ultimate mechanisms underlying SOD1-mediated cytotoxicity are largely unknown, SOD1 aggregates have been strongly implicated as a common feature in ALS. This study examined the mechanism for the formation of SOD1 aggregates in vitro as well as the nature of its cytotoxicity. The aggregation propensity of SOD1 species was investigated using techniques ranging from circular dichroism spectroscopy to fluorescence dye binding methods, as well as electron microscopic imaging. The aggregation of SOD1 appears to be related to its structural instability. The demetallated (apo)-SOD1 and aggregated SOD1 species, with structurally disordered regions, readily undergo aggregation in the presence of lipid molecules, whereas metallated (holo)-SOD1 does not. The majority of aggregated SOD1s that are induced by lipid molecules have an amorphous morphology and exhibit significant cytotoxicity. The lipid binding propensity of SOD1 was found to be closely related to the changes in surface hydrophobicity of the proteins, even at very low levels, which induced further binding and assembly with lipid molecules. These findings suggest that lipid molecules induce SOD1 aggregation under physiological conditions and exert cytotoxicity, and might provide a possible mechanism for the pathogenesis of ALS.
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Affiliation(s)
- Inhee Choi
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 151-742, Korea
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47
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Cao Q, Zhao H, He Y, Li X, Zeng L, Ding N, Wang J, Yang J, Wang G. Hydrogen-bonding-induced colorimetric detection of melamine by nonaggregation-based Au-NPs as a probe. Biosens Bioelectron 2010; 25:2680-5. [DOI: 10.1016/j.bios.2010.04.046] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2010] [Revised: 04/29/2010] [Accepted: 04/29/2010] [Indexed: 10/19/2022]
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48
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Ou LJ, Jin PY, Chu X, Jiang JH, Yu RQ. Sensitive and Visual Detection of Sequence-Specific DNA-Binding Protein via a Gold Nanoparticle-Based Colorimetric Biosensor. Anal Chem 2010; 82:6015-24. [DOI: 10.1021/ac100907g] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Li-Juan Ou
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People’s Republic of China
| | - Pei-Yan Jin
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People’s Republic of China
| | - Xia Chu
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People’s Republic of China
| | - Jian-Hui Jiang
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People’s Republic of China
| | - Ru-Qin Yu
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People’s Republic of China
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Ferrari E, Darios F, Zhang F, Niranjan D, Bailes J, Soloviev M, Davletov B. Binary polypeptide system for permanent and oriented protein immobilization. J Nanobiotechnology 2010; 8:9. [PMID: 20462407 PMCID: PMC2885309 DOI: 10.1186/1477-3155-8-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2010] [Accepted: 05/12/2010] [Indexed: 11/25/2022] Open
Abstract
Background Many techniques in molecular biology, clinical diagnostics and biotechnology rely on binary affinity tags. The existing tags are based on either small molecules (e.g., biotin/streptavidin or glutathione/GST) or peptide tags (FLAG, Myc, HA, Strep-tag and His-tag). Among these, the biotin-streptavidin system is most popular due to the nearly irreversible interaction of biotin with the tetrameric protein, streptavidin. The major drawback of the stable biotin-streptavidin system, however, is that neither of the two tags can be added to a protein of interest via recombinant means (except for the Strep-tag case) leading to the requirement for chemical coupling. Results Here we report a new immobilization system which utilizes two monomeric polypeptides which self-assemble to produce non-covalent yet nearly irreversible complex which is stable in strong detergents, chaotropic agents, as well as in acids and alkali. Our system is based on the core region of the tetra-helical bundle known as the SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor) complex. This irreversible protein attachment system (IPAS) uses either a shortened syntaxin helix and fused SNAP25-synaptobrevin or a fused syntaxin-synaptobrevin and SNAP25 allowing a two-component system suitable for recombinant protein tagging, capture and immobilization. We also show that IPAS is suitable for use with traditional beads and chromatography, planar surfaces and Biacore, gold nanoparticles and for protein-protein interaction in solution. Conclusions IPAS offers an alternative to chemical cross-linking, streptavidin-biotin system and to traditional peptide affinity tags and can be used for a wide range of applications in nanotechnology and molecular sciences.
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Affiliation(s)
- Enrico Ferrari
- MRC Laboratory of Molecular Biology, Cambridge, Hills Road, CB2 0QH, UK.
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50
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Song HD, Choi I, Yang YI, Hong S, Lee S, Kang T, Yi J. Picomolar selective detection of mercuric ion (Hg(2+)) using a functionalized single plasmonic gold nanoparticle. NANOTECHNOLOGY 2010; 21:145501. [PMID: 20215658 DOI: 10.1088/0957-4484/21/14/145501] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A highly sensitive method for the selective detection and quantification of mercuric ions (Hg(2+)) using single plasmonic gold nanoparticle (GNP)-based dark-field microspectroscopy (DFMS) is demonstrated. The method is based on the scattering property of a single GNP that is functionalized with thiolated molecules, which is altered when analytes bind to the functionalized GNP. The spectral resolution of the system is 0.26 nm and a linear response to Hg(2+) was found in the dynamic range of 100 pM-10 microM. The method permits Hg(2+) to be detected at the picomolar level, which is a remarkable reduction in the detection limit, considering the currently proscribed Environmental Protection Agency regulation level (10 nM, or 2 ppb) and the detection limits of other optical methods for detecting Hg(2+) (recently approx. 1-10 nM). In addition, Hg(2+) can be sensitively detected in the presence of Cd(2+), Pb(2+), Cu(2+), Zn(2+) and Ni(2+), which do not interfere with the analysis. Based on the findings reported herein, it is likely that single-nanoparticle-based metal ion sensing can be extended to the development of other chemo- and biosensors for the direct detection of specific targets in an intracellular environment as well as in environmental monitoring.
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Affiliation(s)
- Hyeon Don Song
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, Korea.
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