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Agashe C, Saroha A, Agasti SS, Patra D. Supramolecular Modulation of Fluid Flow in a Self-Powered Enzyme Micropump. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:6933-6939. [PMID: 38497757 DOI: 10.1021/acs.langmuir.3c03958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Regulating macroscopic fluid flow by catalytic harnessing of chemical energy could potentially provide a solution for powerless microfluidic devices. Earlier reports have shown that surface-anchored enzymes can actuate the surrounding fluid in the presence of the respective substrate in a concentration-dependent manner. It is also crucial to have control over the flow speed of a self-powered enzyme micropump in various applications where controlled dosing and mixing are required. However, modulating the flow speed independent of the fuel concentration remains a significant challenge. In a quest to regulate the fluid flow in such a system, a supramolecular approach has been adopted, where reversible regulation of enzyme activity was achieved by a two-faced synthetic receptor bearing sulfonamide and adamantane groups. The bovine carbonic anhydrase (BCA) enzyme containing a single binding site favorable to the sulfonamide group was used as a model enzyme, and the enzyme activity was inhibited in the presence of the two-faced inhibitor. The same effect was reflected when the immobilized enzyme was used as an engine to actuate the fluid flow. The flow velocity was reduced up to 53% in the presence of 100 μM inhibitor. Later, upon addition of a supramolecular "host" CB[7], the inhibitor was sequestered from the enzyme due to the higher binding affinity of CB[7] with the adamantane functionality of the inhibitor. As a result, the flow velocity was restored to ∼72%, thus providing successful supramolecular control over a self-powered enzyme micropump.
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Affiliation(s)
- Chinmayee Agashe
- Institute of Nano Science and Technology, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| | - Akshay Saroha
- Jawaharlal Nehru Centre for Advanced Scientific Research, Rachenahalli Lake Rd, Jakkur, Bengaluru 560064, Karnataka, India
| | - Sarit S Agasti
- Jawaharlal Nehru Centre for Advanced Scientific Research, Rachenahalli Lake Rd, Jakkur, Bengaluru 560064, Karnataka, India
| | - Debabrata Patra
- Institute of Nano Science and Technology, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
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Barbinta-Patrascu ME, Nichita C, Bita B, Antohe S. Biocomposite Materials Derived from Andropogon halepensis: Eco-Design and Biophysical Evaluation. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1225. [PMID: 38473696 DOI: 10.3390/ma17051225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/01/2024] [Accepted: 03/03/2024] [Indexed: 03/14/2024]
Abstract
This research work presents a "green" strategy of weed valorization for developing silver nanoparticles (AgNPs) with promising interesting applications. Two types of AgNPs were phyto-synthesized using an aqueous leaf extract of the weed Andropogon halepensis L. Phyto-manufacturing of AgNPs was achieved by two bio-reactions, in which the volume ratio of (phyto-extract)/(silver salt solution) was varied. The size and physical stability of Andropogon-AgNPs were evaluated by means of DLS and zeta potential measurements, respectively. The phyto-developed nanoparticles presented good free radicals-scavenging properties (investigated via a chemiluminescence technique) and also urease inhibitory activity (evaluated using the conductometric method). Andropogon-AgNPs could be promising candidates for various bio-applications, such as acting as an antioxidant coating for the development of multifunctional materials. Thus, the Andropogon-derived samples were used to treat spider silk from the spider Pholcus phalangioides, and then, the obtained "green" materials were characterized by spectral (UV-Vis absorption, FTIR ATR, and EDX) and morphological (SEM) analyses. These results could be exploited to design novel bioactive materials with applications in the biomedical field.
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Affiliation(s)
- Marcela-Elisabeta Barbinta-Patrascu
- Department of Electricity, Solid-State Physics and Biophysics, Faculty of Physics, University of Bucharest, 405 Atomistilor Street, 077125 Magurele, Romania
| | - Cornelia Nichita
- CTT-3Nano-SAE Research Center, Faculty of Physics, ICUB, University of Bucharest, MG-38, 405 Atomistilor Street, 077125 Magurele, Romania
- National Institute for Chemical-Pharmaceutical Research and Development, 112 Vitan Avenue, 031299 Bucharest, Romania
| | - Bogdan Bita
- Department of Electricity, Solid-State Physics and Biophysics, Faculty of Physics, University of Bucharest, 405 Atomistilor Street, 077125 Magurele, Romania
- National Institute for Lasers, Plasma and Radiation Physics, Magurele, 077125 Bucharest, Romania
| | - Stefan Antohe
- Department of Electricity, Solid-State Physics and Biophysics, Faculty of Physics, University of Bucharest, 405 Atomistilor Street, 077125 Magurele, Romania
- Academy of Romanian Scientists, Ilfov Street 3, 050045 Bucharest, Romania
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Lansdorp BM, Lamberg P, Hamid R. Screen-Printed Silver/Silver Chloride Electrodes Inhibit Alcohol Oxidase Activity. ECS SENSORS PLUS 2023; 2:030602. [PMID: 37469623 PMCID: PMC10353475 DOI: 10.1149/2754-2726/ace5a9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 06/23/2023] [Indexed: 07/21/2023]
Abstract
Silver/silver chloride (Ag/AgCl) is ubiquitous in the field of electrochemical biosensing due to its suitability as a reference electrode material. However, we recently discovered that screen-printed Ag/AgCl ink has a detrimental effect on Alcohol Oxidase enzyme stability. We performed an optical absorbance assay to isolate the interaction of enzyme and electrode to discover a surprisingly strong inhibition effect. The halftime of enzymatic activity was reduced from nearly 1 week in buffer to 10 h in the presence of the Ag/AgCl electrode. We expect this discovery to have broad implications on enzymatic biosensors that use Ag/AgCl as reference electrode material.
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Affiliation(s)
- Bob M. Lansdorp
- Milo Sensors, Inc. Santa Barbara, CA, 93101, United States of America
| | - Peter Lamberg
- Milo Sensors, Inc. Santa Barbara, CA, 93101, United States of America
| | - Rashad Hamid
- Milo Sensors, Inc. Santa Barbara, CA, 93101, United States of America
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Choudhary M, Bisht B, Saini JK, Bharti, Singh P, Bhardwaj P, Dilawari R, Pinnaka AK, Ray P, Gupta M, Sethi S, Suri CR, Raje M, Bhalla V. Bifunctionalized nanobioprobe based rapid color-shift assay for typhoid targeting Vi capsular polysaccharide. Biosens Bioelectron 2023; 228:115195. [PMID: 36931192 DOI: 10.1016/j.bios.2023.115195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 02/27/2023] [Accepted: 03/03/2023] [Indexed: 03/09/2023]
Abstract
Typhoid fever is an acute illness caused by Salmonella Typhi and the current diagnostic gap leads to inaccurate, over-diagnosis of typhoid leading to excessive use of antibiotics. Herein, to address the challenges we describe a new rapid color-shift assay based on a novel bifunctional nanobioprobe (Vi-AgNP probe) that is functionalized with specific biomarker Vi polysaccharide and also has the co-presence of Ag as urease inhibitor. The immunoreactions between the Vi with specific antibodies (Abs) present in typhoid patient sample forms a shielding barrier over Vi-AgNP probe rendering the urease to be active, generating colored output. Vi polysaccharide coating on the AgNP was visualized using HRTEM. TEM was performed to get insight into shielding barrier formation by the Abs. MST (microscale thermophoresis) data showed less binding Kd of 7.43 μM in presence of Abs whereas probe with urease showed efficient binding with Kd 437 nM. The assay was validated using 53 human sera samples and proven effective with 100% sensitivity. The assay showed relative standard deviation (RSD) of 4.3% estimated using rabbit anti-Vi Abs. The entire procedure could be completed within 15 min. Unlike lateral flow based assays, our assay does not require multiple combination of Abs for detection. The assay format was also found compatible in paper strip test that provides promising opportunities to develop low-cost on-spot assay for clinical diagnostics.
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Affiliation(s)
- Megha Choudhary
- Council of Scientific and Industrial Research (CSIR), Institute of Microbial Technology (IMTECH), Sector 39-A, Chandigarh, 160036, India
| | - Bhawana Bisht
- Council of Scientific and Industrial Research (CSIR), Institute of Microbial Technology (IMTECH), Sector 39-A, Chandigarh, 160036, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Jai Kumar Saini
- Council of Scientific and Industrial Research (CSIR), Institute of Microbial Technology (IMTECH), Sector 39-A, Chandigarh, 160036, India
| | - Bharti
- Council of Scientific and Industrial Research (CSIR), Institute of Microbial Technology (IMTECH), Sector 39-A, Chandigarh, 160036, India
| | - Pargat Singh
- Council of Scientific and Industrial Research (CSIR), Institute of Microbial Technology (IMTECH), Sector 39-A, Chandigarh, 160036, India
| | - Priya Bhardwaj
- Council of Scientific and Industrial Research (CSIR), Institute of Microbial Technology (IMTECH), Sector 39-A, Chandigarh, 160036, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Rahul Dilawari
- Council of Scientific and Industrial Research (CSIR), Institute of Microbial Technology (IMTECH), Sector 39-A, Chandigarh, 160036, India
| | - Anil Kumar Pinnaka
- Council of Scientific and Industrial Research (CSIR), Institute of Microbial Technology (IMTECH), Sector 39-A, Chandigarh, 160036, India
| | - Pallab Ray
- Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research (PGIMER), Sector 12, Chandigarh, 160012, India
| | - Madhu Gupta
- Department of Community Medicine, PGIMER, India
| | - Sunil Sethi
- Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research (PGIMER), Sector 12, Chandigarh, 160012, India
| | - C Raman Suri
- Council of Scientific and Industrial Research (CSIR), Institute of Microbial Technology (IMTECH), Sector 39-A, Chandigarh, 160036, India
| | - Manoj Raje
- Council of Scientific and Industrial Research (CSIR), Institute of Microbial Technology (IMTECH), Sector 39-A, Chandigarh, 160036, India
| | - Vijayender Bhalla
- Council of Scientific and Industrial Research (CSIR), Institute of Microbial Technology (IMTECH), Sector 39-A, Chandigarh, 160036, India.
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Gupta J, Rajamani P. Size- and surface functionalization-driven molecular interaction of CdSe quantum dots with jack bean urease: multispectroscopic, thermodynamic, and AFM approach. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:48300-48322. [PMID: 36757588 DOI: 10.1007/s11356-023-25356-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 01/12/2023] [Indexed: 02/10/2023]
Abstract
Quantum dots (QDs) with distinctive optical properties have been extensively researched and developed for usage in solar cells, imaging, drug delivery, cellular targeting, etc. But the inevitable production of QDs can lead to their unavoidable release and increased environmental concentration. Depending on morphological and surface properties, QDs at the nano-bio interface considerably impact the activity and structure of bio-molecules. The present study investigates the interaction of metalloenzyme jack bean urease (JBU) and bi-sized CdSe QDs (2.43 nm and 3.63 nm), surface-functionalized to mercaptopropionic acid (MPA) (-COOH), L-cysteine (CYS), L-glutathione (GSH), N-acetyl L-cysteine (NAC) (-COOH, -NH2), and cysteamine hydrochloride (CYST) (-NH2) to assess any alterations in JBU's binding, microenvironment, structure, exciton lifetime, and activity. JBU catalyzes the hydrolysis of urea to produce ammonia and carbon dioxide; any changes in its properties could threaten the survival of several microbes and plants. Spectroscopy techniques such as UV-Vis, fluorescence, circular dichroism, synchronous, time-resolved fluorescence, atomic force microscopy, and JBU activity assay were studied. Results suggested highly spontaneous and energy-favored interactions, which involved static quenching and hydrophobic forces of varied magnitude, dependent on QDs properties. The size, surface modifications, and dosage of QDs significantly impacted the secondary structure and activity of JBUs. Even though the larger sizes of the relevant modifications demonstrated stronger binding, the smaller sizes had the greatest impact on α-helicity and activity. CYST-capped QDs with an average number of the binding site (n) = 1, reduced α-helicity by 16% and activity by 22-30% at 7 nM concentration. In contrast, MPA-capped QDs with n < 1 had the least effect on α-helical structure and activity. The smaller GSH-capped QDs increased the activity by 9%, via partially restoring JBU's α-helical content. The study thus thoroughly analyzed the impact of varied-size and surface-functionalized QDs on the structure and function of JBU, which can be exploited further for several biomedical applications.
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Affiliation(s)
- Jagriti Gupta
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Paulraj Rajamani
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
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6
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Cui G, Su W, Tan M. Formation and biological effects of protein corona for food-related nanoparticles. Compr Rev Food Sci Food Saf 2021; 21:2002-2031. [PMID: 34716644 DOI: 10.1111/1541-4337.12838] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 08/03/2021] [Accepted: 08/23/2021] [Indexed: 01/04/2023]
Abstract
The rapid development of nanoscience and nanoengineering provides new perspectives on the composition of food materials, and has great potential for food biology research and applications. The use of nanoparticle additives and the discovery of endogenous nanoparticles in food make it important to elucidate in vivo safety of nanomaterials. Nanoparticles will spontaneously adsorb proteins during transporting in blood and a protein corona can be formed on the nanoparticle surface inside the human body. Protein corona affects the physicochemical properties of nanoparticles and the structure and function of proteins, which in turn affects a series of biological reactions. This article reviewed basic information about protein corona of food-related nanoparticles, elucidated the influence of protein corona on nanoparticles properties and protein structure and function, and discussed the effect of protein corona on nanoparticles in vivo. The effects of protein corona on nanoparticles transport, cellular uptake, cytotoxicity, and immune response were reviewed, and the reasons for these effects were also discussed. Finally, future research perspectives for food protein corona were proposed. Protein corona gives food nanoparticles a new identity, which makes proteins bound to nanoparticles undergo structural transformations that affect their recognition by receptors in vivo. It can have positive or negative impacts on cellular uptake and toxicity of nanoparticles and even trigger immune responses. Understanding the effects of protein corona have potential in evaluating the fate of the food-related nanoparticles, providing physicochemical and biological information about the interaction between proteins and foodborne nanoparticles. The review article will help to evaluate the safety of protein coronas formed on nanoparticles in food, and may provide fundamental information for understanding and controlling nanotoxicity.
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Affiliation(s)
- Guoxin Cui
- Academy of Food Interdisciplinary Science, School of Food Science and Technology, Dalian Polytechnic University, Dalian, Liaoning, China.,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, Liaoning, China.,Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, Liaoning, China
| | - Wentao Su
- Academy of Food Interdisciplinary Science, School of Food Science and Technology, Dalian Polytechnic University, Dalian, Liaoning, China.,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, Liaoning, China.,Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, Liaoning, China
| | - Mingqian Tan
- Academy of Food Interdisciplinary Science, School of Food Science and Technology, Dalian Polytechnic University, Dalian, Liaoning, China.,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, Liaoning, China.,Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, Liaoning, China
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7
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Li Y, Koopal LK, Chen Y, Shen A, Tan W. Conformational modifications of lysozyme caused by interaction with humic acid studied with spectroscopy. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 768:144858. [PMID: 33453531 DOI: 10.1016/j.scitotenv.2020.144858] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/17/2020] [Accepted: 12/20/2020] [Indexed: 06/12/2023]
Abstract
Modification of enzyme/protein conformation will affect the activities and functionality of enzymes. Previous studies have shown that the activity of lysozyme (LSZ) in the presence of humic acid (HA) is largely determined by the mass ratio of HA/LSZ (f = mHA/mLSZ), pH and ionic strength. Here the interaction and conformation of LSZ in HA/LSZ-complex/aggregate (HA/LSZ-c/a) were investigated by spectroscopic techniques at (initial) pH 5 and 8 and ionic strength 5 mmol/L. The results indicated a strong interaction between HA and LSZ. Circular dichroism (CD), and attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy showed that the helix content reached a minimum at the mass ratio of its iso electric point (IEP) at given initial pH, fIEP,pHi. The changes in β-sheet and random coil of HA/LSZ-c/a were opposite with increasing f. The minimum of helix content at fIEP,pHi corresponded with the minimum LSZ activity and maximum aggregate size of HA/LSZ-c/a. UV-vis spectra and fluorescence measurements indicated that the amino acid residues (especially for tyrosine) in LSZ were in a more hydrophobic microenvironment before fIEP,pHi due to the formation of HA/LSZ-c/a, while were gradually exposed to a more polar microenvironment beyond fIEP,pHi with the disaggregation of HA/LSZ-c/a. HA and LSZ interaction caused a more hydrophobic microenvironment for the amino acid residues at initial pH 8. This study improves our understanding of enzyme/protein behavior in the natural environment.
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Affiliation(s)
- Yan Li
- Institute of Environment Resource and Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; National Agricultural Experimental Station for Soil Quality, Jiaxing 314000, China
| | - Luuk K Koopal
- Physical Chemistry and Soft Matter, Wageningen University and Research, Stippeneng 4, 6708 WE Wageningen, the Netherlands
| | - Yi Chen
- Institute of Environment Resource and Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; National Agricultural Experimental Station for Soil Quality, Jiaxing 314000, China.
| | - Alin Shen
- Institute of Environment Resource and Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Wenfeng Tan
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
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Hu P, An J, Faulkner MM, Wu H, Li Z, Tian X, Giraldo JP. Nanoparticle Charge and Size Control Foliar Delivery Efficiency to Plant Cells and Organelles. ACS NANO 2020; 14:7970-7986. [PMID: 32628442 DOI: 10.1021/acsnano.9b09178] [Citation(s) in RCA: 133] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Fundamental and quantitative understanding of the interactions between nanoparticles and plant leaves is crucial for advancing the field of nanoenabled agriculture. Herein, we systematically investigated and modeled how ζ potential (-52.3 mV to +36.6 mV) and hydrodynamic size (1.7-18 nm) of hydrophilic nanoparticles influence delivery efficiency and pathways to specific leaf cells and organelles. We studied interactions of nanoparticles of agricultural interest including carbon dots (CDs, 0.5 and 5 mg/mL), cerium oxide (CeO2, 0.5 mg/mL), and silica (SiO2, 0.5 mg/mL) nanoparticles with leaves of two major crop species having contrasting leaf anatomies: cotton (dicotyledon) and maize (monocotyledon). Biocompatible CDs allowed real-time tracking of nanoparticle translocation and distribution in planta by confocal fluorescence microscopy at high spatial (∼200 nm) and temporal (2-5 min) resolution. Nanoparticle formulations with surfactants (Silwet L-77) that reduced surface tension to 22 mN/m were found to be crucial for enabling rapid uptake (<10 min) of nanoparticles through the leaf stomata and cuticle pathways. Nanoparticle-leaf interaction (NLI) empirical models based on hydrodynamic size and ζ potential indicate that hydrophilic nanoparticles with <20 and 11 nm for cotton and maize, respectively, and positive charge (>15 mV), exhibit the highest foliar delivery efficiencies into guard cells (100%), extracellular space (90.3%), and chloroplasts (55.8%). Systematic assessments of nanoparticle-plant interactions would lead to the development of NLI models that predict the translocation and distribution of nanomaterials in plants based on their chemical and physical properties.
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Affiliation(s)
- Peiguang Hu
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, United States
| | - Jing An
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, United States
- State Key Laboratory of Plant Physiology and Biochemistry, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Maquela M Faulkner
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, United States
| | - Honghong Wu
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, United States
| | - Zhaohu Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Xiaoli Tian
- State Key Laboratory of Plant Physiology and Biochemistry, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Juan Pablo Giraldo
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, United States
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Coglitore D, Janot JM, Balme S. Protein at liquid solid interfaces: Toward a new paradigm to change the approach to design hybrid protein/solid-state materials. Adv Colloid Interface Sci 2019; 270:278-292. [PMID: 31306853 DOI: 10.1016/j.cis.2019.07.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 07/04/2019] [Accepted: 07/05/2019] [Indexed: 10/26/2022]
Abstract
This review gives an overview of protein adsorption at solid/liquid interface. Compared to the other ones, we have focus on three main questions with the point of view of the protein. The first question is related to the kinetic and especially the using of Langmuir model to describe the protein adsorption. The second question is about the concept of hard and soft protein. In this part, we report the protein structural modification induced by adsorption regarding their intrinsic structure. This allows formulating of a new concept to classify the protein to predict their behavior at solid/liquid interface. The last question is related to the protein corona. We give an overview about the soft/hard corona and attempt to make correlation with the concept of hard/soft protein.
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Singh P, Kakkar S, Bharti B, Kumar R, Bhalla V. Rapid and sensitive colorimetric detection of pathogens based on silver–urease interactions. Chem Commun (Camb) 2019; 55:4765-4768. [DOI: 10.1039/c9cc00225a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Herein, we demonstrate a facile and economic approach for colorimetric detection of microbial pathogens in drinking water, employing silver–urease interactions.
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Affiliation(s)
- Pargat Singh
- UIET-Panjab University
- Chandigarh
- India
- CSIR-Institute of Microbial Technology
- Chandigarh
| | - Saloni Kakkar
- CSIR-Institute of Microbial Technology
- Chandigarh
- India
| | - Bharti Bharti
- CSIR-Institute of Microbial Technology
- Chandigarh
- India
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11
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Modolo LV, da-Silva CJ, Brandão DS, Chaves IS. A minireview on what we have learned about urease inhibitors of agricultural interest since mid-2000s. J Adv Res 2018; 13:29-37. [PMID: 30094080 PMCID: PMC6077229 DOI: 10.1016/j.jare.2018.04.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 04/14/2018] [Accepted: 04/15/2018] [Indexed: 11/29/2022] Open
Abstract
World population is expected to reach 9.7 billion by 2050, which makes a great challenge the achievement of food security. The use of urease inhibitors in agricultural practices has long been explored as one of the strategies to guarantee food supply in enough amounts. This is due to the fact that urea, one of the most used nitrogen (N) fertilizers worldwide, rapidly undergoes urease-driven hydrolysis on soil surface yielding up to 70% N losses to environment. This review provides with a compilation of what has been done since 2005 with respect to the search for good urease inhibitors of agricultural interests. The potential of synthetic organic molecules, such as phosphoramidates, hydroquinone, quinones, (di)substituted thioureas, benzothiazoles, coumarin and phenolic aldehyde derivatives, and vanadium-hydrazine complexes, together with B, Cu, S, Zn, ammonium thiosulfate, silver nanoparticles, and oxidized charcoal as urease inhibitors was presented from experiments with purified jack bean urease, different soils and/or plant-soil systems. The ability of some urease inhibitors to mitigate formation of greenhouse gases is also discussed.
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Vaghela C, Kulkarni M, Haram S, Aiyer R, Karve M. A novel inhibition based biosensor using urease nanoconjugate entrapped biocomposite membrane for potentiometric glyphosate detection. Int J Biol Macromol 2018; 108:32-40. [PMID: 29174355 DOI: 10.1016/j.ijbiomac.2017.11.136] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 11/18/2017] [Accepted: 11/21/2017] [Indexed: 11/20/2022]
Abstract
A potentiometric biosensor based on agarose-guar gum (A-G) entrapped bio-nanoconjugate of urease with gold nanoparticles (AUNps), has been reported for the first time for glyphosate detection. The biosensor is based on inhibition of urease activity by glyphosate, which was measured by direct potentiometry using ammonium ion selective electrode covered with A-G-urease nanoconjugate membrane. TEM and FTIR analysis revealed nanoconjugate formation and its immobilization in A-G matrix respectively. The composite biopolymer employed for immobilization yields thin, transparent, flexible membrane having superior mechanical strength and stability. It retains the maximum activity (92%) of urease with negligible leaching. The conjugation of urease with AUNps allows improvement in response characteristics for potentiometric measurement. The biosensor shows a linear response in the glyphosate concentration range from 0.5ppm-50ppm, with limit of detection at 0.5ppm, which covers maximum residual limit set by WHO for drinking water. The inhibition of catalytic activity of urease nanoconjugate by gyphosate was confirmed by FTIR analysis. The response of fabricated biosensor is selective towards glyphosate as against various other pesticides. The biosensor exhibits good performance in terms of reproducibility and prolonged storage stability of 180days. Thus, the present biosensor provides an alternative method for simple, selective and cost effective detection of glyphosate based on urease inhibition.
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Affiliation(s)
- Chetana Vaghela
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind Road, Pune, 411007, India
| | - Mohan Kulkarni
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind Road, Pune, 411007, India.
| | - Santosh Haram
- Department of Chemistry, Savitribai Phule Pune University, Ganeshkhind Road, Pune, 411007, India
| | - Rohini Aiyer
- Center for Sensor Studies, Department of Electronic Science, Savitribai Phule Pune University, Pune, 411007, India
| | - Meena Karve
- Institute of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Ganeshkhid Road, Pune, 411007, India.
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Ullah Khan S, Saleh TA, Wahab A, Khan MHU, Khan D, Ullah Khan W, Rahim A, Kamal S, Ullah Khan F, Fahad S. Nanosilver: new ageless and versatile biomedical therapeutic scaffold. Int J Nanomedicine 2018; 13:733-762. [PMID: 29440898 PMCID: PMC5799856 DOI: 10.2147/ijn.s153167] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Silver nanotechnology has received tremendous attention in recent years, owing to its wide range of applications in various fields and its intrinsic therapeutic properties. In this review, an attempt is made to critically evaluate the chemical, physical, and biological synthesis of silver nanoparticles (AgNPs) as well as their efficacy in the field of theranostics including microbiology and parasitology. Moreover, an outlook is also provided regarding the performance of AgNPs against different biological systems such as bacteria, fungi, viruses, and parasites (leishmanial and malarial parasites) in curing certain fatal human diseases, with a special focus on cancer. The mechanism of action of AgNPs in different biological systems still remains enigmatic. Here, due to limited available literature, we only focused on AgNPs mechanism in biological systems including human (wound healing and apoptosis), bacteria, and viruses which may open new windows for future research to ensure the versatile application of AgNPs in cosmetics, electronics, and medical fields.
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Affiliation(s)
- Shahid Ullah Khan
- College of Plant Sciences and Technology
- National Key Laboratory of Crop Genetics Improvement, Huazhong Agricultural University, Wuhan, People’s Republic of China
| | - Tawfik A Saleh
- Department of Chemistry, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia
| | - Abdul Wahab
- Department of Pharmacy, Kohat University of Science and Technology, Kohat
| | - Muhammad Hafeez Ullah Khan
- College of Plant Sciences and Technology
- National Key Laboratory of Crop Genetics Improvement, Huazhong Agricultural University, Wuhan, People’s Republic of China
| | - Dilfaraz Khan
- Institute of Chemical Sciences, Gomal University, Dera Ismail Khan, Pakistan
| | - Wasim Ullah Khan
- School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Abdur Rahim
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Sajid Kamal
- School of Biotechnology, Jiangnan University, Wuxi, People’s Republic of China
| | - Farman Ullah Khan
- Department of Chemistry, University of Science and Technology, Bannu
| | - Shah Fahad
- College of Plant Sciences and Technology
- Department of Agriculture, University of Swabi, Swabi, Pakistan
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Rahmani S, Mogharizadeh L, Attar F, Rezayat SM, Mousavi SE, Falahati M. Probing the interaction of silver nanoparticles with tau protein and neuroblastoma cell line as nervous system models. J Biomol Struct Dyn 2017; 36:4057-4071. [PMID: 29173031 DOI: 10.1080/07391102.2017.1407673] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Interestingly pharmaceutical sciences are using nanoparticles (NPs) to design and develop nanomaterials-based drugs. However, up to recently, it has not been well realized that NPs themselves may impose risks to the biological systems. In this study, the interaction of silver nanoparticles (AgNPs) with tau protein and SH-SY5Y neuroblastoma cell line, as potential nervous system models, was examined with a range of techniques including intrinsic fluorescence spectroscopy, circular dichroism (CD) spectroscopy, 3-(4,5-dimethylthiazol-2-Yl)-2,5-diphenyltetrazolium bromide (MTT) assay, and acridine orange/ethidium bromide (AO/EB) dual staining method. Fluorescence study showed that AgNPs with a diameter of around 10-20 nm spontaneously form a static complex with tau protein via hydrogen bonds and van der Waals interactions. CD experiment revealed that AgNPs did not change the random coil structure of tau protein. Moreover, AgNPs showed to induce SH-SY5Y neuroblastoma cell mortality through fragmentation of DNA which is a key feature of apoptosis. In conclusion, AgNPs may induce slight changes on the tau protein structure. Also, the concentration of AgNPs is the main factor which influences their cytotoxicity. Since, all adverse effects of NPs are not well detected, so probably additional more specific testing would be needed.
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Affiliation(s)
- Sara Rahmani
- a Faculty of Advance Science and Technology, Department of Cell and Molecular Biology , Islamic Azad University, Pharmaceutical Sciences Branch (IAUPS) , Tehran , Iran
| | - Leila Mogharizadeh
- b Department of Cell and Molecular Biology , Islamic Azad University, Central Tehran Branch , Tehran , Iran
| | - Farnoosh Attar
- c Department of Biology, Faculty of Food Industry & Agriculture , Standard Research Institute (SRI) , Karaj , Iran
| | - Seyed Mahdi Rezayat
- d Department of Pharmacology, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran.,e Department of Medical Nanotechnology, School of Advanced Technologies in Medicine , Tehran University of Medical Sciences , Tehran , Iran
| | - Seyyedeh Elaheh Mousavi
- d Department of Pharmacology, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran
| | - Mojtaba Falahati
- f Faculty of Advance Science and Technology, Department of Nanotechnology , Islamic Azad University, Pharmaceutical Sciences Branch (IAUPS) , Tehran , Iran
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MacCormack TJ, Rundle AM, Malek M, Raveendran A, Meli MV. Gold nanoparticles partition to and increase the activity of glucose-6-phosphatase in a synthetic phospholipid membrane system. PLoS One 2017; 12:e0183274. [PMID: 28817664 PMCID: PMC5560555 DOI: 10.1371/journal.pone.0183274] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 08/01/2017] [Indexed: 01/27/2023] Open
Abstract
Engineered nanomaterials can alter the structure and/or function of biological membranes and membrane proteins but the underlying mechanisms remain unclear. We addressed this using a Langmuir phospholipid monolayer containing an active transmembrane protein, glucose-6-phosphatase (G6Pase). Gold nanoparticles (nAu) with varying ligand shell composition and hydrophobicity were synthesized, and their partitioning in the membrane and effects on protein activity characterized. nAu incorporation did not alter the macroscopic properties of the membrane. Atomic force microscopy showed that when co-spread with other components prior to membrane compression, nAu preferentially interacted with G6Pase and each other in a functional group-dependent manner. Under these conditions, all nAu formulations reduced G6Pase aggregation in the membrane, enhancing catalytic activity 5-6 fold. When injected into the subphase beneath pre-compressed monolayers, nAu did not affect G6Pase activity over 60 minutes, implying they were unable to interact with the protein under these conditions. A small but significant quenching of tryptophan fluorescence showed that nAu interacted with G6Pase in aqueous suspension. nAu also significantly reduced the hydrodynamic diameter of G6Pase in aqueous suspension and promoted catalytic activity, likely via a similar mechanism to that observed in co-spread monolayers. Overall, our results show that nAu can incorporate into membranes and associate preferentially with membrane proteins under certain conditions and that partitioning is dependent upon ligand shell chemistry and composition. Once incorporated, nAu can alter the distribution of membrane proteins and indirectly affect their function by improving active site accessibility, or potentially by changing their native structure and distribution in the membrane.
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Affiliation(s)
- Tyson J. MacCormack
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB, Canada
- * E-mail: (TJM); (MVM)
| | - Amanda M. Rundle
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB, Canada
| | - Michael Malek
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB, Canada
| | - Abhilash Raveendran
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB, Canada
| | - Maria-Victoria Meli
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB, Canada
- * E-mail: (TJM); (MVM)
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Surface functionalization-specific binding of coagulation factors by zinc oxide nanoparticles delays coagulation time and reduces thrombin generation potential in vitro. PLoS One 2017; 12:e0181634. [PMID: 28723962 PMCID: PMC5517067 DOI: 10.1371/journal.pone.0181634] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 07/04/2017] [Indexed: 02/07/2023] Open
Abstract
Zinc oxide nanoparticles (ZnO NPs) have many biomedical applications such as chemotherapy agents, vaccine adjuvants, and biosensors but its hemocompatibility is still poorly understood, especially in the event of direct contact of NPs with blood components. Here, we investigated the impact of size and surface functional groups on the platelet homeostasis. ZnO NPs were synthesized in two different sizes (20 and 100 nm) and with three different functional surface groups (pristine, citrate, and L-serine). ZnO NPs were incubated with plasma collected from healthy rats to evaluate the coagulation time, kinetics of thrombin generation, and profile of levels of coagulation factors in the supernatant and coronated onto the ZnO NPs. Measurements of plasma coagulation time showed that all types of ZnO NPs prolonged both active partial thromboplastin time and prothrombin time in a dose-dependent manner but there was no size- or surface functionalization-specific pattern. The kinetics data of thrombin generation showed that ZnO NPs reduced the thrombin generation potential with functionalization-specificity in the order of pristine > citrate > L-serine but there was no size-specificity. The profile of levels of coagulation factors in the supernatant and coronated onto the ZnO NPs after incubation of platelet-poor plasma with ZnO NPs showed that ZnO NPs reduced the levels of coagulation factors in the supernatant with functionalization-specificity. Interestingly, the pattern of coagulation factors in the supernatant was consistent with the levels of coagulation factors adsorbed onto the NPs, which might imply that ZnO NPs simply adsorb coagulation factors rather than stimulating these factors. The reduced levels of coagulation factors in the supernatant were consistent with the delayed coagulation time and reduced potential for thrombin generation, which imply that the adsorbed coagulation factors are not functional.
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Aghili Z, Taheri S, Zeinabad HA, Pishkar L, Saboury AA, Rahimi A, Falahati M. Investigating the Interaction of Fe Nanoparticles with Lysozyme by Biophysical and Molecular Docking Studies. PLoS One 2016; 11:e0164878. [PMID: 27776180 PMCID: PMC5077090 DOI: 10.1371/journal.pone.0164878] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 10/03/2016] [Indexed: 12/14/2022] Open
Abstract
Herein, the interaction of hen egg white lysozyme (HEWL) with iron nanoparticle (Fe NP) was investigated by spectroscopic and docking studies. The zeta potential analysis revealed that addition of Fe NP (6.45±1.03 mV) to HEWL (8.57±0.54 mV) can cause to greater charge distribution of nanoparticle-protein system (17.33±1.84 mV). In addition, dynamic light scattering (DLS) study revealed that addition of Fe NP (92.95±6.11 nm) to HEWL (2.68±0.37 nm) increases suspension potential of protein/nanoparticle system (51.17±3.19 nm). Fluorescence quenching studies reveled that both static and dynamic quenching mechanism occur and hydrogen bond and van der Waals interaction give rise to protein-NP system. Synchronous fluorescence spectroscopy of HEWL in the presence of Fe NP showed that the emission maximum wavelength of tryptophan (Trp) residues undergoes a red-shift. ANS fluorescence data indicated a dramatic exposure of hydrophobic residues to the solvent. The considerable reduction in melting temperature (T(m)) of HEWL after addition of Fe NP determines an unfavorable interaction system. Furthermore circular dichoroism (CD) experiments demonstrated that, the secondary structure of HEWL has not changed with increasing Fe NP concentrations; however, some conformational changes occur in tertiary structure of HEWL. Moreover, protein-ligand docking study confirmed that the Fe NP forms hydrogen bond contacts with HEWL.
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Affiliation(s)
- Zahra Aghili
- Department of Biology, Islamic Azad University, Science and Research Branch, Tehran, Iran
| | - Saba Taheri
- Department of Biology, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
| | - Hojjat Alizadeh Zeinabad
- MEMS & NEMS Lab, Department of Electrical and Computer Engineering, University of Tehran, Tehran, Iran
| | - Leila Pishkar
- Young Researchers and Elite Club, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
- Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran
| | - Arash Rahimi
- Department of Biology, Islamic Azad University, Science and Research Branch, Tehran, Iran
| | - Mojtaba Falahati
- Department of Nanotechnology, Faculty of Advance Science and Technology, Islamic Azad University of Pharmaceutical Sciences (IAUPS), Tehran, Iran
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Rohullah R, Azam A, Qiao S, Islam MU, Ali J, Wahab A, Khan MA, Farhan F, Hameed A. Facile synthesis of hair-extract-capped gold and silver nanoparticles and their biological applications. RSC Adv 2016. [DOI: 10.1039/c6ra21455j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hair is a waste keratinous biomaterial.
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Affiliation(s)
- Rohullah Rohullah
- Department of Chemistry
- Kohat University of Science and Technology
- Pakistan
| | - Andaleeb Azam
- Department of Chemistry
- Women University Swabi
- Swabi
- Pakistan
| | - Shanlin Qiao
- National Center for Nanoscience and Technology
- University of Chinese Academy
- Beijing
- China
| | - Mazhar Ul Islam
- Department of Chemical Engineering
- College of Engineering
- Dhofar University
- Salalah
- Oman
| | - Javed Ali
- Department of Chemistry
- Kohat University of Science and Technology
- Pakistan
| | - Abdul Wahab
- Department of Pharmacy
- Kohat University of Science and Technology
- Pakistan
| | - Murad Ali Khan
- Department of Chemistry
- Kohat University of Science and Technology
- Pakistan
| | - Farhan Farhan
- Department of Chemistry
- Kohat University of Science and Technology
- Pakistan
| | - Abdul Hameed
- National Center for Nanoscience and Technology
- University of Chinese Academy
- Beijing
- China
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Vargová V, Giménez RE, Černocká H, Trujillo DC, Tulli F, Zanini VIP, Paleček E, Borsarelli CD, Ostatná V. Label-free electrochemical detection of singlet oxygen protein damage. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.11.104] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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20
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Zeinabad HA, Kachooei E, Saboury AA, Kostova I, Attar F, Vaezzadeh M, Falahati M. Thermodynamic and conformational changes of protein toward interaction with nanoparticles: a spectroscopic overview. RSC Adv 2016. [DOI: 10.1039/c6ra16422f] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Nanoparticles (NPs) in different forms have been widely used in medicine and pharmaceutics for diagnosis and drug delivery.
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Affiliation(s)
- Hojjat Alizadeh Zeinabad
- Department of Nanotechnology
- Faculty of Advance Science and Technology
- Pharmaceutical Sciences Branch
- Islamic Azad University (IAUPS)
- Tehran
| | - Ehsan Kachooei
- Institute of Biochemistry and Biophysics
- University of Tehran
- Tehran
- Iran
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics
- University of Tehran
- Tehran
- Iran
| | - Irena Kostova
- Department of Chemistry
- Faculty of Pharmacy
- Medical University
- Sofia 1000
- Bulgaria
| | - Farnoosh Attar
- Department of Biology
- Faculty of Food Industry & Agriculture
- Standard Research Institute (SRI)
- Karaj
- Iran
| | - Mahsa Vaezzadeh
- Department of Biology
- Research and Science Branch
- Islamic Azad University
- Tehran
- Iran
| | - Mojtaba Falahati
- Department of Nanotechnology
- Faculty of Advance Science and Technology
- Pharmaceutical Sciences Branch
- Islamic Azad University (IAUPS)
- Tehran
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