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Ivanov YD, Shumov ID, Kozlov AF, Valueva AA, Ershova MO, Ivanova IA, Ableev AN, Tatur VY, Lukyanitsa AA, Ivanova ND, Ziborov VS. Atomic Force Microscopy Study of the Long-Term Effect of the Glycerol Flow, Stopped in a Coiled Heat Exchanger, on Horseradish Peroxidase. MICROMACHINES 2024; 15:499. [PMID: 38675310 PMCID: PMC11052087 DOI: 10.3390/mi15040499] [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: 03/19/2024] [Accepted: 03/26/2024] [Indexed: 04/28/2024]
Abstract
Glycerol is employed as a functional component of heat-transfer fluids, which are of use in both bioreactors and various biosensor devices. At the same time, flowing glycerol was reported to cause considerable triboelectric effects. Herein, by using atomic force microscopy (AFM), we have revealed the long-term effect of glycerol flow, stopped in a ground-shielded coiled heat exchanger, on horseradish peroxidase (HRP) adsorption on mica. Namely, the solution of HRP was incubated in the vicinity of the side of the cylindrical coil with stopped glycerol flow, and then HRP was adsorbed from this solution onto a mica substrate. This incubation has been found to markedly increase the content of aggregated enzyme on mica-as compared with the control enzyme sample. We explain the phenomenon observed by the influence of triboelectrically induced electromagnetic fields of non-trivial topology. The results reported should be further considered in the development of flow-based heat exchangers of biosensors and bioreactors intended for operation with enzymes.
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Affiliation(s)
- Yuri D. Ivanov
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia; (I.D.S.); (A.F.K.); (A.A.V.); (M.O.E.); (I.A.I.); (A.N.A.); (V.S.Z.)
- Joint Institute for High Temperatures of the Russian Academy of Sciences, 125412 Moscow, Russia
| | - Ivan D. Shumov
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia; (I.D.S.); (A.F.K.); (A.A.V.); (M.O.E.); (I.A.I.); (A.N.A.); (V.S.Z.)
| | - Andrey F. Kozlov
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia; (I.D.S.); (A.F.K.); (A.A.V.); (M.O.E.); (I.A.I.); (A.N.A.); (V.S.Z.)
| | - Anastasia A. Valueva
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia; (I.D.S.); (A.F.K.); (A.A.V.); (M.O.E.); (I.A.I.); (A.N.A.); (V.S.Z.)
| | - Maria O. Ershova
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia; (I.D.S.); (A.F.K.); (A.A.V.); (M.O.E.); (I.A.I.); (A.N.A.); (V.S.Z.)
| | - Irina A. Ivanova
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia; (I.D.S.); (A.F.K.); (A.A.V.); (M.O.E.); (I.A.I.); (A.N.A.); (V.S.Z.)
| | - Alexander N. Ableev
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia; (I.D.S.); (A.F.K.); (A.A.V.); (M.O.E.); (I.A.I.); (A.N.A.); (V.S.Z.)
| | - Vadim Y. Tatur
- Foundation of Perspective Technologies and Novations, 115682 Moscow, Russia; (V.Y.T.); (A.A.L.); (N.D.I.)
| | - Andrei A. Lukyanitsa
- Foundation of Perspective Technologies and Novations, 115682 Moscow, Russia; (V.Y.T.); (A.A.L.); (N.D.I.)
- Faculty of Computational Mathematics and Cybernetics, Moscow State University, 119991 Moscow, Russia
| | - Nina D. Ivanova
- Foundation of Perspective Technologies and Novations, 115682 Moscow, Russia; (V.Y.T.); (A.A.L.); (N.D.I.)
- Moscow State Academy of Veterinary Medicine and Biotechnology Named after Skryabin, 109472 Moscow, Russia
| | - Vadim S. Ziborov
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia; (I.D.S.); (A.F.K.); (A.A.V.); (M.O.E.); (I.A.I.); (A.N.A.); (V.S.Z.)
- Joint Institute for High Temperatures of the Russian Academy of Sciences, 125412 Moscow, Russia
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2
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Majid N, Khan RH. Protein aggregation: Consequences, mechanism, characterization and inhibitory strategies. Int J Biol Macromol 2023; 242:125123. [PMID: 37270122 DOI: 10.1016/j.ijbiomac.2023.125123] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 05/01/2023] [Accepted: 05/25/2023] [Indexed: 06/05/2023]
Abstract
Proteins play a major role in the regulation of various cellular functions including the synthesis of structural components. But proteins are stable under physiological conditions only. A slight variation in environmental conditions can cost them huge in terms of conformational stability ultimately leading to aggregation. Under normal conditions, aggregated proteins are degraded or removed from the cell by a quality control system including ubiquitin-proteasomal machinery and autophagy. But they are burdened under diseased conditions or are impaired by the aggregated proteins leading to the generation of toxicity. The misfolding and aggregation of protein such as amyloid-β, α-synuclein, human lysozyme etc., are responsible for certain diseases including Alzheimer, Parkinson, and non- neuropathic systemic amyloidosis respectively. Extensive research has been done to find the therapeutics for such diseases but till now we have got only symptomatic treatment that will reduce the disease severity but will not target the initial formation of nucleus responsible for disease progression and propagation. Hence there is an urgent need to develop the drugs targeting the cause of the disease. For this, a wide knowledge related to misfolding and aggregation under the same heading is required as described in this review alongwith the strategies hypothesized and implemented till now. This will contribute a lot to the work of researchers in the field of neuroscience.
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Affiliation(s)
- Nabeela Majid
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India.
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Ivanov YD, Shumov ID, Kozlov AF, Ershova MO, Valueva AA, Ivanova IA, Tatur VY, Lukyanitsa AA, Ivanova ND, Ziborov VS. Stopped Flow of Glycerol Induces the Enhancement of Adsorption and Aggregation of HRP on Mica. MICROMACHINES 2023; 14:mi14051024. [PMID: 37241647 DOI: 10.3390/mi14051024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/26/2023] [Accepted: 05/06/2023] [Indexed: 05/28/2023]
Abstract
Glycerol is a usable component of heat-transfer fluids, and is thus suitable for the use in microchannel-based heat exchangers in biosensors and microelectronic devices. The flow of a fluid can lead to the generation of electromagnetic fields, which can affect enzymes. Herein, by means of atomic force microscopy (AFM) and spectrophotometry, a long-term effect of stopped flow of glycerol through a coiled heat exchanger on horseradish peroxidase (HRP) has been revealed. Samples of buffered HRP solution were incubated near either the inlet or the outlet sections of the heat exchanger after stopping the flow. It has been found that both the enzyme aggregation state and the number of mica-adsorbed HRP particles increase after such an incubation for 40 min. Moreover, the enzymatic activity of the enzyme incubated near the inlet section has been found to increase in comparison with that of the control sample, while the activity of the enzyme incubated near the outlet section remained unaffected. Our results can find application in the development of biosensors and bioreactors, in which flow-based heat exchangers are employed.
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Affiliation(s)
- Yuri D Ivanov
- Institute of Biomedical Chemistry, Pogodinskaya Street, 10 Build. 8, Moscow 119121, Russia
- Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow 125412, Russia
| | - Ivan D Shumov
- Institute of Biomedical Chemistry, Pogodinskaya Street, 10 Build. 8, Moscow 119121, Russia
| | - Andrey F Kozlov
- Institute of Biomedical Chemistry, Pogodinskaya Street, 10 Build. 8, Moscow 119121, Russia
| | - Maria O Ershova
- Institute of Biomedical Chemistry, Pogodinskaya Street, 10 Build. 8, Moscow 119121, Russia
| | - Anastasia A Valueva
- Institute of Biomedical Chemistry, Pogodinskaya Street, 10 Build. 8, Moscow 119121, Russia
| | - Irina A Ivanova
- Institute of Biomedical Chemistry, Pogodinskaya Street, 10 Build. 8, Moscow 119121, Russia
| | - Vadim Y Tatur
- Foundation of Perspective Technologies and Novations, Moscow 115682, Russia
| | - Andrei A Lukyanitsa
- Foundation of Perspective Technologies and Novations, Moscow 115682, Russia
- Faculty of Computational Mathematics and Cybernetics, Moscow State University, Moscow 119991, Russia
| | - Nina D Ivanova
- Foundation of Perspective Technologies and Novations, Moscow 115682, Russia
- Moscow State Academy of Veterinary Medicine and Biotechnology Named after Skryabin, Moscow 109472, Russia
| | - Vadim S Ziborov
- Institute of Biomedical Chemistry, Pogodinskaya Street, 10 Build. 8, Moscow 119121, Russia
- Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow 125412, Russia
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Villanueva ME, Salinas SR, Vico RV, Bianco ID. Surface characterization and interfacial activity of chitinase chi18-5 against chitosan in langmuir monolayers. Colloids Surf B Biointerfaces 2023; 227:113337. [PMID: 37167692 DOI: 10.1016/j.colsurfb.2023.113337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 04/26/2023] [Accepted: 05/06/2023] [Indexed: 05/13/2023]
Abstract
One of the challenges for producing active chitinase formulations relies on the gap between the laboratory tests and the biological scenarios where the enzyme will perform its function. In this work, we have employed different Langmuir monolayer arrays to evaluate the interfacial behavior of a recently purified recombinant chitinase, Chi18-5. We have demonstrated that two conformations exist for the chitinase at pH values close to its pI, showing very distinct structural properties at the air/aqueous interface. Enzyme activity was assessed by implementing different kinetic approaches and using a chitosan-1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) mixed film as organized substrate model membrane. Combining these strategies, we demonstrated that better catalytic efficiencies can be obtained for Chi18-5 at pH 5. Moreover, the chitinase activity at the air/aqueous interface can be tuned by introducing in situ pH modifications over the surrounding milieu. We also studied the changes in the topography at the mesoscale level using Brewster Angle Microscopy (BAM). We found that Chi18-5 segregated onto the chitosan domains of the membrane, showing differences in homogeneity depending on the pH imposed. Alternatively, pure Chi18-5 was tested for immobilization onto a hydrophilic activated solid support using the Langmuir-Blodgett technique. Atomic Force Microscopy (AFM) analyses showed successfully stabilization and preservation of molecular features attributed to the pH at which the enzyme deposition was performed.
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Affiliation(s)
- M E Villanueva
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), CONICET, Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - S R Salinas
- Centro de Excelencia en Productos y Procesos de Córdoba (CEPROCOR), CONICET, Córdoba, Argentina
| | - R V Vico
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC-UNC-CONICET), Departamento de Química Orgánica. Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - I D Bianco
- Centro de Excelencia en Productos y Procesos de Córdoba (CEPROCOR), CONICET, Córdoba, Argentina; Universidad Nacional de La Rioja, Departamento de Ciencias Exactas, Físicas y Naturales, La Rioja, Argentina.
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5
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Ivanov YD, Shumov ID, Tatur VY, Valueva AA, Kozlov AF, Ivanova IA, Ershova MO, Ivanova ND, Stepanov IN, Lukyanitsa AA, Ziborov VS. AFM Investigation of the Influence of Steam Flow through a Conical Coil Heat Exchanger on Enzyme Properties. MICROMACHINES 2022; 13:2041. [PMID: 36557340 PMCID: PMC9784692 DOI: 10.3390/mi13122041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/15/2022] [Accepted: 11/19/2022] [Indexed: 06/17/2023]
Abstract
The present study is aimed at the revelation of subtle effects of steam flow through a conical coil heat exchanger on an enzyme, incubated near the heat exchanger, at the nanoscale. For this purpose, atomic force microscopy (AFM) has been employed. In our experiments, horseradish peroxidase (HRP) was used as a model enzyme. HRP is extensively employed as a model in food science in order to determine the influence of electromagnetic fields on enzymes. Adsorption properties of HRP on mica have been studied by AFM at the level of individual enzyme macromolecules, while the enzymatic activity of HRP has been studied by spectrophotometry. The solution of HRP was incubated either near the top or at the side of the conically wound aluminium pipe, through which steam flow passed. Our AFM data indicated an increase in the enzyme aggregation on mica after its incubation at either of the two points near the heat exchanger. At the same time, in the spectrophotometry experiments, a slight change in the shape of the curves, reflecting the HRP-catalyzed kinetics of ABTS oxidation by hydrogen peroxide, has also been observed after the incubation of the enzyme solution near the heat exchanger. These effects on the enzyme adsorption and kinetics can be explained by alterations in the enzyme hydration caused by the influence of the electromagnetic field, induced triboelectrically by the flow of steam through the heat exchanger. Our findings should thus be considered in the development of equipment involving conical heat exchangers, intended for either research or industrial use (including miniaturized bioreactors and biosensors). The increased aggregation of the HRP enzyme, observed after its incubation near the heat exchanger, should also be taken into account in analysis of possible adverse effects from steam-heated industrial equipment on the human body.
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Affiliation(s)
- Yuri D. Ivanov
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, Moscow 119121, Russia
- Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow 125412, Russia
| | - Ivan D. Shumov
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, Moscow 119121, Russia
| | - Vadim Y. Tatur
- Foundation of Perspective Technologies and Novations, Moscow 115682, Russia
| | - Anastasia A. Valueva
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, Moscow 119121, Russia
| | - Andrey F. Kozlov
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, Moscow 119121, Russia
| | - Irina A. Ivanova
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, Moscow 119121, Russia
| | - Maria O. Ershova
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, Moscow 119121, Russia
| | - Nina D. Ivanova
- Foundation of Perspective Technologies and Novations, Moscow 115682, Russia
- Moscow State Academy of Veterinary Medicine and Biotechnology Named after Skryabin, Moscow 109472, Russia
| | - Igor N. Stepanov
- Foundation of Perspective Technologies and Novations, Moscow 115682, Russia
| | - Andrei A. Lukyanitsa
- Foundation of Perspective Technologies and Novations, Moscow 115682, Russia
- Faculty of Computational Mathematics and Cybernetics, Moscow State University, Moscow 119991, Russia
| | - Vadim S. Ziborov
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, Moscow 119121, Russia
- Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow 125412, Russia
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6
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Ivanov YD, Tatur VY, Shumov ID, Kozlov AF, Valueva AA, Ivanova IA, Ershova MO, Ivanova ND, Stepanov IN, Lukyanitsa AA, Ziborov VS. The Effect of a Rotating Cone on Horseradish Peroxidase Aggregation on Mica Revealed by Atomic Force Microscopy. MICROMACHINES 2022; 13:1947. [PMID: 36363968 PMCID: PMC9697547 DOI: 10.3390/mi13111947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/03/2022] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
Our study reported herein aims to determine whether an electromagnetic field, induced triboelectrically by a metallic cone, rotating at a frequency of 167 Hz, has an effect on the properties of the horseradish peroxidase (HRP) enzyme. Atomic force microscopy (AFM) was employed to detect even the most subtle effects on single enzyme molecules. In parallel, a macroscopic method (spectrophotometry) was used to reveal whether the enzymatic activity of HRP in solution was affected. An aqueous solution of the enzyme was incubated at a distance of 2 cm from the rotating cone. The experiments were performed at various incubation times. The control experiments were performed with a non-rotating cone. The incubation of the HRP solution was found to cause the disaggregation of the enzyme. At longer incubation times, this disaggregation was found to be accompanied by the formation of higher-order aggregates; however, no change in the HRP enzymatic activity was observed. The results of our experiments could be of interest in the development of enzyme-based biosensors with rotating elements such as stirrers. Additionally, the results obtained herein are important for the correct interpretation of data obtained with such biosensors.
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Affiliation(s)
- Yuri D. Ivanov
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia
- Joint Institute for High Temperatures of the Russian Academy of Sciences, 125412 Moscow, Russia
| | - Vadim Y. Tatur
- Foundation of Perspective Technologies and Novations, 115682 Moscow, Russia
| | - Ivan D. Shumov
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia
| | - Andrey F. Kozlov
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia
| | - Anastasia A. Valueva
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia
| | - Irina A. Ivanova
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia
| | - Maria O. Ershova
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia
| | - Nina D. Ivanova
- Foundation of Perspective Technologies and Novations, 115682 Moscow, Russia
- Moscow State Academy of Veterinary Medicine and Biotechnology Named after Skryabin, 109472 Moscow, Russia
| | - Igor N. Stepanov
- Foundation of Perspective Technologies and Novations, 115682 Moscow, Russia
| | - Andrei A. Lukyanitsa
- Foundation of Perspective Technologies and Novations, 115682 Moscow, Russia
- Faculty of Computational Mathematics and Cybernetics, Moscow State University, 119991 Moscow, Russia
| | - Vadim S. Ziborov
- Institute of Biomedical Chemistry, Pogodinskaya Str., 10 Build. 8, 119121 Moscow, Russia
- Joint Institute for High Temperatures of the Russian Academy of Sciences, 125412 Moscow, Russia
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Ivanov YD, Tatur VY, Shumov ID, Kozlov AF, Valueva AA, Ivanova IA, Ershova MO, Ivanova ND, Stepanov IN, Lukyanitsa AA, Ziborov VS. Atomic Force Microscopy Study of the Effect of an Electric Field, Applied to a Pyramidal Structure, on Enzyme Biomolecules. J Funct Biomater 2022; 13:jfb13040234. [PMID: 36412875 PMCID: PMC9680214 DOI: 10.3390/jfb13040234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 10/31/2022] [Accepted: 11/08/2022] [Indexed: 11/11/2022] Open
Abstract
The influence of an external constant strong electric field, formed using a pyramidal structure under a high electric potential, on an enzyme located near its apex, is studied. Horseradish peroxidase (HRP) is used as a model. In our experiments, a 27 kV direct current (DC) voltage was applied to two electrodes with a conducting pyramidal structure attached to one of them. The enzyme particles were visualized by atomic force microscopy (AFM) after the adsorption of the enzyme from its 0.1 µM solution onto mica AFM substrates. It is demonstrated that after the 40 min exposure to the electric field, the enzyme forms extended structures on mica, while in control experiments compact HRP particles are observed. After the exposure to the electric field, the majority of mica-adsorbed HRP particles had a height of 1.2 nm (as opposed to 1.0 nm in the case of control experiments), and the contribution of higher (>2.0 nm) particles was also considerable. This indicates the formation of high-order HRP aggregates under the influence of an applied electric field. At that, the enzymatic activity of HRP against its substrate 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) remains unaffected. These results are important for studying macroscopic effects of strong electromagnetic fields on enzymes, as well as for the development of cellular structure models.
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Affiliation(s)
- Yuri D. Ivanov
- Institute of Biomedical Chemistry, 119121 Moscow, Russia
- Joint Institute for High Temperatures of the Russian Academy of Sciences, 125412 Moscow, Russia
- Correspondence:
| | - Vadim Y. Tatur
- Foundation of Perspective Technologies and Novations, 115682 Moscow, Russia
| | - Ivan D. Shumov
- Institute of Biomedical Chemistry, 119121 Moscow, Russia
| | | | | | | | | | - Nina D. Ivanova
- Foundation of Perspective Technologies and Novations, 115682 Moscow, Russia
- Moscow State Academy of Veterinary Medicine and Biotechnology Named after Skryabin, 109472 Moscow, Russia
| | - Igor N. Stepanov
- Foundation of Perspective Technologies and Novations, 115682 Moscow, Russia
| | - Andrei A. Lukyanitsa
- Foundation of Perspective Technologies and Novations, 115682 Moscow, Russia
- Faculty of Computational Mathematics and Cybernetics, Moscow State University, 119991 Moscow, Russia
| | - Vadim S. Ziborov
- Institute of Biomedical Chemistry, 119121 Moscow, Russia
- Joint Institute for High Temperatures of the Russian Academy of Sciences, 125412 Moscow, Russia
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Ivanova IA, Ershova MO, Shumov ID, Valueva AA, Ivanov YD, Pleshakova TO. Atomic Force Microscopy Study of the Temperature and Storage Duration Dependencies of Horseradish Peroxidase Oligomeric State. Biomedicines 2022; 10:biomedicines10102645. [PMID: 36289907 PMCID: PMC9599489 DOI: 10.3390/biomedicines10102645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/14/2022] [Accepted: 10/18/2022] [Indexed: 11/16/2022] Open
Abstract
This paper presents an investigation of the temperature dependence of the oligomeric state of the horseradish peroxidase (HRP) enzyme on the temperature of its solution, and on the solution storage time, at the single-molecule level. Atomic force microscopy has been employed to determine how the temperature and the storage time of the HRP solution influence its aggregation upon direct adsorption of the enzyme from the solution onto bare mica substrates. In parallel, spectrophotometric measurements have been performed in order to estimate whether the HRP enzymatic activity changes over time upon the storage of the enzyme solution. The temperature dependence of the HRP oligomeric state has been studied within a broad (15–40 °C) temperature range. It has been demonstrated that the storage of the HRP solution for 14 days does not have any considerable effect on the oligomeric state of the enzyme, neither does it affect its activity. At longer storage times, AFM has allowed us to reveal a tendency of HRP to oligomerization during the storage of its buffered solution, while the enzymatic activity remains virtually unchanged even after a 1-month-long storage. By AFM, it has been revealed that after the incubation of a mica substrate in the HRP solution at various temperatures, the content of the mica-adsorbed oligomers increases insignificantly owing to a high-temperature stability of the enzyme.
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The Effect of a Dodecahedron-Shaped Structure on the Properties of an Enzyme. J Funct Biomater 2022; 13:jfb13040166. [PMID: 36278635 PMCID: PMC9590084 DOI: 10.3390/jfb13040166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/21/2022] [Accepted: 09/24/2022] [Indexed: 11/26/2022] Open
Abstract
In this research, the influence of a dodecahedron-shaped structure on the adsorption behavior of a horseradish peroxidase (HRP) enzyme glycoprotein onto mica substrates was studied. In the experiments, samples of an aqueous HRP solution were incubated at various distances (0.03 m, 2 m, 5 m, and control at 20 m) from the dodecahedron surface. After the incubation, the direct adsorption of HRP onto mica substrates immersed in the solutions was performed, and the mica-adsorbed HRP particles were visualized via atomic force microscopy (AFM). The effect of the increased HRP aggregation was only observed after the incubation of the enzyme solution at the 2 m distance from the dodecahedron. In addition, with respect to the control sample, spectrophotometric measurements revealed no change in the HRP enzymatic activity after the incubation at any of the distances studied. The results reported herein can be of use in the modeling of the possible influences of various spatial structures on biological objects in the development of biosensors and other electronic equipment.
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The Effect of Incubation near an Inversely Oriented Square Pyramidal Structure on Adsorption Properties of Horseradish Peroxidase. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12084042] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The incubation of a solution of horseradish peroxidase (HRP) enzyme either below the apex or near the base of an inversely oriented square pyramid (inverted square pyramid; ISP) has been found to influence the enzyme’s aggregation and adsorption properties. The HRP enzyme is used herein as a model object due to its importance in analytical chemistry applications. Atomic force microscopy (AFM) is employed to investigate the HRP’s adsorption on mica substrates at the single-molecule level. Conventional spectrophotometry is used in parallel as a reference method for the determination of the HRP’s enzymatic activity. Using AFM, we reveal a significant change in the adsorption properties of HRP on mica substrates after the incubation of the HRP solutions either above the base or below the apex of the ISP in comparison with the control HRP solution. The same situation is observed after the incubation of the enzyme solution above the center of the ISP’s base. Here, the enzymatic activity of HRP remained unaffected in both cases. Since pyramidal structures of positive and inverted orientation are employed in biosensor devices, it is important to take into account the results obtained herein in the development of highly sensitive biosensor systems, in which pyramidal structures are employed as sensor (such as AFM probes) or construction elements.
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11
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Kaysheva AL, Isaeva AI, Pleshakova TO, Shumov ID, Valueva AA, Ershova MO, Ivanova IA, Ziborov VS, Iourov IY, Vorsanova SG, Ryabtsev SV, Archakov AI, Ivanov YD. Detection of Circulating Serum microRNA/Protein Complexes in ASD Using Functionalized Chips for an Atomic Force Microscope. Molecules 2021; 26:5979. [PMID: 34641523 PMCID: PMC8512613 DOI: 10.3390/molecules26195979] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/17/2021] [Accepted: 09/29/2021] [Indexed: 11/17/2022] Open
Abstract
MicroRNAs, which circulate in blood, are characterized by high diagnostic value; in biomedical research, they can be considered as candidate markers of various diseases. Mature microRNAs of glial cells and neurons can cross the blood-brain barrier and can be detected in the serum of patients with autism spectrum disorders (ASD) as components of macrovesicles, macromolecular protein and low-density lipoprotein particles. In our present study, we have proposed an approach, in which microRNAs in protein complexes can be concentrated on the surface of AFM chips with oligonucleotide molecular probes, specific against the target microRNAs. MicroRNAs, associated with the development of ASD in children, were selected as targets. The chips with immobilized molecular probes were incubated in serum samples of ASD patients and healthy volunteers. By atomic force microscopy (AFM), objects on the AFM chip surface have been revealed after incubation in the serum samples. The height of these objects amounted to 10 nm and 6 nm in the case of samples of ASD patients and healthy volunteers, respectively. MALDI-TOF-MS analysis of protein components on the chip surface allowed us to identify several cell proteins. These proteins are involved in the binding of nucleic acids (GBG10, RT24, RALYL), in the organization of proteasomes and nucleosomes (PSA4, NP1L4), and participate in the functioning of the channel of active potassium transport (KCNE5, KCNV2).
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Affiliation(s)
- Anna L. Kaysheva
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (A.L.K.); (T.O.P.); (I.D.S.); (A.A.V.); (M.O.E.); (I.A.I.); (V.S.Z.); (A.I.A.); (Y.D.I.)
| | - Arina I. Isaeva
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (A.L.K.); (T.O.P.); (I.D.S.); (A.A.V.); (M.O.E.); (I.A.I.); (V.S.Z.); (A.I.A.); (Y.D.I.)
| | - Tatyana O. Pleshakova
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (A.L.K.); (T.O.P.); (I.D.S.); (A.A.V.); (M.O.E.); (I.A.I.); (V.S.Z.); (A.I.A.); (Y.D.I.)
| | - Ivan D. Shumov
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (A.L.K.); (T.O.P.); (I.D.S.); (A.A.V.); (M.O.E.); (I.A.I.); (V.S.Z.); (A.I.A.); (Y.D.I.)
| | - Anastasia A. Valueva
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (A.L.K.); (T.O.P.); (I.D.S.); (A.A.V.); (M.O.E.); (I.A.I.); (V.S.Z.); (A.I.A.); (Y.D.I.)
| | - Maria O. Ershova
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (A.L.K.); (T.O.P.); (I.D.S.); (A.A.V.); (M.O.E.); (I.A.I.); (V.S.Z.); (A.I.A.); (Y.D.I.)
| | - Irina A. Ivanova
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (A.L.K.); (T.O.P.); (I.D.S.); (A.A.V.); (M.O.E.); (I.A.I.); (V.S.Z.); (A.I.A.); (Y.D.I.)
| | - Vadim S. Ziborov
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (A.L.K.); (T.O.P.); (I.D.S.); (A.A.V.); (M.O.E.); (I.A.I.); (V.S.Z.); (A.I.A.); (Y.D.I.)
- Laboratory of Shock Wave Impacts, Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya St. 13 Bd.2, 125412 Moscow, Russia
| | | | - Svetlana G. Vorsanova
- Veltischev Research and Clinical Institute for Pediatrics, Pirogov Russian National Research Medical University, Ministry of Health of Russian Federation, Taldomskaya St. 2, 125412 Moscow, Russia;
| | | | - Alexander I. Archakov
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (A.L.K.); (T.O.P.); (I.D.S.); (A.A.V.); (M.O.E.); (I.A.I.); (V.S.Z.); (A.I.A.); (Y.D.I.)
| | - Yuri D. Ivanov
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (A.L.K.); (T.O.P.); (I.D.S.); (A.A.V.); (M.O.E.); (I.A.I.); (V.S.Z.); (A.I.A.); (Y.D.I.)
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Trzeciak K, Chotera-Ouda A, Bak-Sypien II, Potrzebowski MJ. Mesoporous Silica Particles as Drug Delivery Systems-The State of the Art in Loading Methods and the Recent Progress in Analytical Techniques for Monitoring These Processes. Pharmaceutics 2021; 13:pharmaceutics13070950. [PMID: 34202794 PMCID: PMC8309060 DOI: 10.3390/pharmaceutics13070950] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 12/17/2022] Open
Abstract
Conventional administration of drugs is limited by poor water solubility, low permeability, and mediocre targeting. Safe and effective delivery of drugs and therapeutic agents remains a challenge, especially for complex therapies, such as cancer treatment, pain management, heart failure medication, among several others. Thus, delivery systems designed to improve the pharmacokinetics of loaded molecules, and allowing controlled release and target specific delivery, have received considerable attention in recent years. The last two decades have seen a growing interest among scientists and the pharmaceutical industry in mesoporous silica nanoparticles (MSNs) as drug delivery systems (DDS). This interest is due to the unique physicochemical properties, including high loading capacity, excellent biocompatibility, and easy functionalization. In this review, we discuss the current state of the art related to the preparation of drug-loaded MSNs and their analysis, focusing on the newest advancements, and highlighting the advantages and disadvantages of different methods. Finally, we provide a concise outlook for the remaining challenges in the field.
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Ivanov YD, Tatur VY, Pleshakova TO, Shumov ID, Kozlov AF, Valueva AA, Ivanova IA, Ershova MO, Ivanova ND, Repnikov VV, Stepanov IN, Ziborov VS. Effect of Spherical Elements of Biosensors and Bioreactors on the Physicochemical Properties of a Peroxidase Protein. Polymers (Basel) 2021; 13:1601. [PMID: 34063512 PMCID: PMC8155990 DOI: 10.3390/polym13101601] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 11/16/2022] Open
Abstract
External electromagnetic fields are known to be able to concentrate inside the construction elements of biosensors and bioreactors owing to reflection from their surface. This can lead to changes in the structure of biopolymers (such as proteins), incubated inside these elements, thus influencing their functional properties. Our present study concerned the revelation of the effect of spherical elements, commonly employed in biosensors and bioreactors, on the physicochemical properties of proteins with the example of the horseradish peroxidase (HRP) enzyme. In our experiments, a solution of HRP was incubated within a 30 cm-diameter titanium half-sphere, which was used as a model construction element. Atomic force microscopy (AFM) was employed for the single-molecule visualization of the HRP macromolecules, adsorbed from the test solution onto mica substrates in order to find out whether the incubation of the test HRP solution within the half-sphere influenced the HRP aggregation state. Attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) was employed in order to reveal whether the incubation of HRP solution within the half-sphere led to any changes in its secondary structure. In parallel, spectrophotometry-based estimation of the HRP enzymatic activity was performed in order to find out if the HRP active site was affected by the electromagnetic field under the conditions of our experiments. We revealed an increased aggregation of HRP after the incubation of its solution within the half-sphere in comparison with the control sample incubated far outside the half-sphere. ATR-FTIR allowed us to reveal alterations in HRP's secondary structure. Such changes in the protein structure did not affect its active site, as was confirmed by spectrophotometry. The effect of spherical elements on a protein solution should be taken into account in the development of the optimized design of biosensors and bioreactors, intended for performing processes involving proteins in biomedicine and biotechnology, including highly sensitive biosensors intended for the diagnosis of socially significant diseases in humans (including oncology, cardiovascular diseases, etc.) at early stages.
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Affiliation(s)
- Yuri D. Ivanov
- Institute of Biomedical Chemistry, 119121 Moscow, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (V.S.Z.)
- Joint Institute for High Temperatures of the Russian Academy of Sciences, 125412 Moscow, Russia
| | - Vadim Yu. Tatur
- Foundation of Perspective Technologies and Novations, 115682 Moscow, Russia; (V.Y.T.); (N.D.I.); (I.N.S.)
| | - Tatyana O. Pleshakova
- Institute of Biomedical Chemistry, 119121 Moscow, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (V.S.Z.)
| | - Ivan D. Shumov
- Institute of Biomedical Chemistry, 119121 Moscow, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (V.S.Z.)
| | - Andrey F. Kozlov
- Institute of Biomedical Chemistry, 119121 Moscow, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (V.S.Z.)
| | - Anastasia A. Valueva
- Institute of Biomedical Chemistry, 119121 Moscow, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (V.S.Z.)
| | - Irina A. Ivanova
- Institute of Biomedical Chemistry, 119121 Moscow, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (V.S.Z.)
| | - Maria O. Ershova
- Institute of Biomedical Chemistry, 119121 Moscow, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (V.S.Z.)
| | - Nina D. Ivanova
- Foundation of Perspective Technologies and Novations, 115682 Moscow, Russia; (V.Y.T.); (N.D.I.); (I.N.S.)
- Skryabin Moscow State Academy of Veterinary Medicine and Biotechnology, 109472 Moscow, Russia
| | | | - Igor N. Stepanov
- Foundation of Perspective Technologies and Novations, 115682 Moscow, Russia; (V.Y.T.); (N.D.I.); (I.N.S.)
| | - Vadim S. Ziborov
- Institute of Biomedical Chemistry, 119121 Moscow, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (V.S.Z.)
- Joint Institute for High Temperatures of the Russian Academy of Sciences, 125412 Moscow, Russia
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14
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Ivanov YD, Pleshakova TO, Shumov ID, Kozlov AF, Ivanova IA, Valueva AA, Ershova MO, Tatur VY, Stepanov IN, Repnikov VV, Ziborov VS. AFM study of changes in properties of horseradish peroxidase after incubation of its solution near a pyramidal structure. Sci Rep 2021; 11:9907. [PMID: 33972657 PMCID: PMC8110588 DOI: 10.1038/s41598-021-89377-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 04/22/2021] [Indexed: 12/14/2022] Open
Abstract
In our present paper, the influence of a pyramidal structure on physicochemical properties of a protein in buffer solution has been studied. The pyramidal structure employed herein was similar to those produced industrially for anechoic chambers. Pyramidal structures are also used as elements of biosensors. Herein, horseradish peroxidase (HRP) enzyme was used as a model protein. HRP macromolecules were adsorbed from their solution onto an atomically smooth mica substrate, and then visualized by atomic force microscopy (AFM). In parallel, the enzymatic activity of HRP was estimated by conventional spectrophotometry. Additionally, attenuated total reflection Fourier-transform infrared spectroscopy (ATR-FTIR) has been employed in order to find out whether or not the protein secondary structure changes after the incubation of its solution either near the apex of a pyramid or in the center of its base. Using AFM, we have demonstrated that the incubation of the protein solution either in the vicinity of the pyramid’s apex or in the center of its base influences the physicochemical properties of the protein macromolecules. Namely, the incubation of the HRP solution in the vicinity of the top of the pyramidal structure has been shown to lead to an increase in the efficiency of the HRP adsorption onto mica. Moreover, after the incubation of the HRP solution either near the top of the pyramid or in the center of its base, the HRP macromolecules adsorb onto the mica surface predominantly in monomeric form. At that, the enzymatic activity of HRP does not change. The results of our present study are useful to be taken into account in the development of novel biosensor devices (including those for the diagnosis of cancer in humans), in which pyramidal structures are employed as sensor, noise suppression or construction elements.
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Affiliation(s)
- Yuri D Ivanov
- Institute of Biomedical Chemistry, Pogodinskaya str., 10, Moscow, 119121, Russia. .,Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya st. 13 Bd.2, Moscow, 125412, Russia.
| | - Tatyana O Pleshakova
- Institute of Biomedical Chemistry, Pogodinskaya str., 10, Moscow, 119121, Russia
| | - Ivan D Shumov
- Institute of Biomedical Chemistry, Pogodinskaya str., 10, Moscow, 119121, Russia
| | - Andrey F Kozlov
- Institute of Biomedical Chemistry, Pogodinskaya str., 10, Moscow, 119121, Russia
| | - Irina A Ivanova
- Institute of Biomedical Chemistry, Pogodinskaya str., 10, Moscow, 119121, Russia
| | - Anastasia A Valueva
- Institute of Biomedical Chemistry, Pogodinskaya str., 10, Moscow, 119121, Russia
| | - Maria O Ershova
- Institute of Biomedical Chemistry, Pogodinskaya str., 10, Moscow, 119121, Russia
| | - Vadim Yu Tatur
- Foundation of Perspective Technologies and Novations, Moscow, 115682, Russia
| | - Igor N Stepanov
- Foundation of Perspective Technologies and Novations, Moscow, 115682, Russia
| | | | - Vadim S Ziborov
- Institute of Biomedical Chemistry, Pogodinskaya str., 10, Moscow, 119121, Russia.,Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya st. 13 Bd.2, Moscow, 125412, Russia
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15
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Ivanov YD, Pleshakova TO, Shumov ID, Kozlov AF, Valueva AA, Ivanova IA, Ershova MO, Larionov DI, Repnikov VV, Ivanova ND, Tatur VY, Stepanov IN, Ziborov VS. AFM and FTIR Investigation of the Effect of Water Flow on Horseradish Peroxidase. Molecules 2021; 26:E306. [PMID: 33435278 PMCID: PMC7826892 DOI: 10.3390/molecules26020306] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 11/17/2022] Open
Abstract
Atomic force microscopy (AFM)-based fishing is a promising method for the detection of low-abundant proteins. This method is based on the capturing of the target proteins from the analyzed solution onto a solid substrate, with subsequent counting of the captured protein molecules on the substrate surface by AFM. Protein adsorption onto the substrate surface represents one of the key factors determining the capturing efficiency. Accordingly, studying the factors influencing the protein adsorbability onto the substrate surface represents an actual direction in biomedical research. Herein, the influence of water motion in a flow-based system on the protein adsorbability and on its enzymatic activity has been studied with an example of horseradish peroxidase (HRP) enzyme by AFM, attenuated total reflection Fourier-transform infrared spectroscopy (ATR-FTIR) and conventional spectrophotometry. In the experiments, HRP solution was incubated in a setup modeling the flow section of a biosensor communication. The measuring cell with the protein solution was placed near a coiled silicone pipe, through which water was pumped. The adsorbability of the protein onto the surface of the mica substrate has been studied by AFM. It has been demonstrated that incubation of the HRP solution near the coiled silicone pipe with flowing water leads to an increase in its adsorbability onto mica. This is accompanied by a change in the enzyme's secondary structure, as has been revealed by ATR-FTIR. At the same time, its enzymatic activity remains unchanged. The results reported herein can be useful in the development of models describing the influence of liquid flow on the properties of enzymes and other proteins. The latter is particularly important for the development of biosensors for biomedical applications-particularly for serological analysis, which is intended for the early diagnosis of various types of cancer and infectious diseases. Our results should also be taken into account in studies of the effects of protein aggregation on hemodynamics, which plays a key role in human body functioning.
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Affiliation(s)
- Yuri D. Ivanov
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (D.I.L.); (V.S.Z.)
| | - Tatyana O. Pleshakova
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (D.I.L.); (V.S.Z.)
| | - Ivan D. Shumov
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (D.I.L.); (V.S.Z.)
| | - Andrey F. Kozlov
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (D.I.L.); (V.S.Z.)
| | - Anastasia A. Valueva
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (D.I.L.); (V.S.Z.)
| | - Irina A. Ivanova
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (D.I.L.); (V.S.Z.)
| | - Maria O. Ershova
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (D.I.L.); (V.S.Z.)
| | - Dmitry I. Larionov
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (D.I.L.); (V.S.Z.)
| | | | - Nina D. Ivanova
- Skryabin Moscow State Academy of Veterinary Medicine and Biotechnology, Moscow 109472, Russia;
| | - Vadim Yu. Tatur
- Foundation of Perspective Technologies and Novations, Moscow 115682, Russia; (V.Y.T.); (I.N.S.)
| | - Igor N. Stepanov
- Foundation of Perspective Technologies and Novations, Moscow 115682, Russia; (V.Y.T.); (I.N.S.)
| | - Vadim S. Ziborov
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (T.O.P.); (I.D.S.); (A.F.K.); (A.A.V.); (I.A.I.); (M.O.E.); (D.I.L.); (V.S.Z.)
- Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow 125412, Russia
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An efficient nano-biocatalyst for lignocellulosic biomass hydrolysis: Xylanase immobilization on organically modified biogenic mesoporous silica nanoparticles. Int J Biol Macromol 2020; 164:3462-3473. [DOI: 10.1016/j.ijbiomac.2020.08.211] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 08/26/2020] [Accepted: 08/27/2020] [Indexed: 01/11/2023]
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Investigation of the Influence of Liquid Motion in a Flow-Based System on an Enzyme Aggregation State with an Atomic Force Microscopy Sensor: The Effect of Glycerol Flow. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10144825] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Atomic force microscopy is employed to study the influence of the motion of a glycerol solution through a coiled (spiral-wound) polymeric communication pipe on the aggregation state of a protein, with the example of a horseradish peroxidase (HRP) enzyme. The measuring cell with the buffered solution of the protein was placed within the experimental setup over the pipe coil, through which glycerol was pumped. It is demonstrated that, in such a system, the flow of a non-aqueous liquid (glycerol) leads to a change in the physicochemical properties of a protein, whose solution was incubated in the measuring cell placed over the coil. Namely, changes in both the adsorbability onto mica and the aggregation state of the model HRP protein were observed. As glycerol-containing liquids are commonly used in biosensor operations, the results reported herein can be useful to the development of biosensor systems, in which polymeric communications are employed in sample delivery and thermal stabilization systems. The data obtained herein can also be of use for the development of specified hydrodynamic models.
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Investigation of the Influence of Liquid Motion in a Flow-based System on an Enzyme Aggregation State with an Atomic Force Microscopy Sensor: The Effect of Water Flow. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10134560] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The influence of liquid motion in flow-based systems on the aggregation state of an enzyme and on its enzymatic activity was studied, with horseradish peroxidase (HRP) as an example. Our experiments were carried out in a setup modeling the flow section of the biosensor communication with a measuring cell containing a protein solution. Studies were conducted for a biosensor measuring cell located along the axis of a spiral-moving liquid flow. The aggregation state of the protein was determined with an atomic force microscopy-based sensor (AFM sensor). It has been demonstrated that upon flowing of water through silicone biosensor communications, an increased aggregation of HRP protein was observed, but, at the same time, its enzymatic activity did not change. Our results obtained herein are useful in the development of models describing the influence of liquid flow in biosensor communications on the properties of enzymes and other proteins. This is particularly important for the development of serologic protein biosensors, which are beginning to be used for the early diagnosis of oncological diseases (such as brain cancer, prostate cancer, breast cancer etc.). The results obtained herein should also be taken into account when considering possible changes in hemodynamics due to increased protein aggregation.
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