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Goryanin I, Ovchinnikov L, Vesnin S, Ivanov Y. Monitoring Protein Denaturation of Egg White Using Passive Microwave Radiometry (MWR). Diagnostics (Basel) 2022; 12:diagnostics12061498. [PMID: 35741308 PMCID: PMC9221703 DOI: 10.3390/diagnostics12061498] [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: 05/20/2022] [Revised: 06/08/2022] [Accepted: 06/15/2022] [Indexed: 11/16/2022] Open
Abstract
Passive microwave radiometry (MWR) is a measurement technique based on the detection of passive radiation in the microwave spectrum of different objects. When in equilibrium, this radiation is known to be proportional to the thermodynamic temperature of an emitting body. We hypothesize that living systems feature other mechanisms of emission that are based on protein unfolding and water rotational transitions. To understand the nature of these emissions, microwave radiometry was used in several in vitro experiments. In our study, we performed pilot measurements of microwave emissions from egg whites during denaturation induced by ethanol. Egg whites comprise 10% proteins, such as albumins, mucoproteins, and globulins. We observed a novel phenomenon: microwave emissions changed without a corresponding change in the water’s thermodynamic temperature. We also found striking differences between microwave emissions and thermodynamic temperature kinetics. Therefore, we hypothesize that these two processes are unrelated, contrary to what was thought before. It is known that some pathologies such as stroke or brain trauma feature increased microwave emissions. We hypothesize that this phenomenon originates from protein denaturation and is not related to the thermodynamic temperature. As such, our findings could explain the reason for the increase in microwave emissions after trauma and post mortem for the first time. These findings could be used for the development of novel diagnostics methods. The MWR method is inexpensive and does not require fluorescent or radioactive labels. It can be used in different areas of basic and applied pharmaceutical research, including in kinetics studies in biomedicine.
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Affiliation(s)
- Igor Goryanin
- Okinawa Institute of Science and Technology, Onna-son, Okinawa 904-049, Japan
- School of Informatics, University of Edinburgh, Edinburgh EH8 9YL, UK
- Institute Experimental and Theoretical Biophysics, 142290 Pushchino, Russia
- Correspondence:
| | - Lev Ovchinnikov
- Medical Microwave Radiometry (MMWR) LTD, Edinburgh EH10 5LZ, UK; (L.O.); (S.V.)
| | - Sergey Vesnin
- Medical Microwave Radiometry (MMWR) LTD, Edinburgh EH10 5LZ, UK; (L.O.); (S.V.)
| | - Yuri Ivanov
- Institute of Biomedical Chemistry, 10, Pogodinskaya st., 119121 Moscow, Russia;
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Ivanov YD, Malsagova KA, Bukharina NS, Vesnin SG, Usanov SA, Tatur VY, Lukyanitsa AA, Ivanova ND, Konev VA, Ziborov VS. Radiothermometric Study of the Effect of Amino Acid Mutation on the Characteristics of the Enzymatic System. Diagnostics (Basel) 2022; 12:diagnostics12040943. [PMID: 35453991 PMCID: PMC9024681 DOI: 10.3390/diagnostics12040943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 04/05/2022] [Accepted: 04/08/2022] [Indexed: 11/16/2022] Open
Abstract
The radiothermometry (RTM) study of a cytochrome-containing system (CYP102 A1) has been conducted in order to demonstrate the applicability of RTM for monitoring changes in the functional activity of an enzyme in case of its point mutation. The study has been performed with the example of the wild-type cytochrome (WT) and its mutant type A264K. CYP102 A1 is a nanoscale protein-enzymatic system of about 10 nm in size. RTM uses a radio detector and can record the corresponding brightness temperature (Tbr) of the nanoscale enzyme solution within the 3.4–4.2 GHz frequency range during enzyme functioning. It was found that the enzymatic reaction during the lauric acid hydroxylation at the wild-type CYP102 A1 (WT) concentration of ~10−9 M is accompanied by Tbr fluctuations of ~0.5–1 °C. At the same time, no Tbr fluctuations are observed for the mutated forms of the enzyme CYP102 A1 (A264K), where one amino acid was replaced. We know that the activity of CYP102 A1 (WT) is ~4 orders of magnitude higher than that of CYP102 A1 (A264K). We therefore concluded that the disappearance of the fluctuation of Tbr CYP102 A1 (A264K) is associated with a decrease in the activity of the enzyme. This effect can be used to develop new methods for testing the activity of the enzyme that do not require additional labels and expensive equipment, in comparison with calorimetry and spectral methods. The RTM is beginning to find application in the diagnosis of oncological diseases and for the analysis of biochemical processes.
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Affiliation(s)
- Yuri D. Ivanov
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10 Build. 8, 119121 Moscow, Russia; (N.S.B.); (V.S.Z.)
- Laboratory of Shock Wave Impacts, Joint Institute for High Temperatures of Russian Academy of Sciences, Izhorskaya St. 13 Build. 2, 125412 Moscow, Russia
- Correspondence: (Y.D.I.); (K.A.M.); Tel.: +7-(499)-246-37-61 (Y.D.I.)
| | - Kristina A. Malsagova
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10 Build. 8, 119121 Moscow, Russia; (N.S.B.); (V.S.Z.)
- Correspondence: (Y.D.I.); (K.A.M.); Tel.: +7-(499)-246-37-61 (Y.D.I.)
| | - Natalia S. Bukharina
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10 Build. 8, 119121 Moscow, Russia; (N.S.B.); (V.S.Z.)
| | | | - Sergey A. Usanov
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Academician V.F. Kuprevich 5 Build. 2, 220141 Minsk, Belarus;
| | - Vadim Yu. Tatur
- Foundation of Perspective Technologies and Novations, Shipilovskaya St. 64, 115682 Moscow, Russia; (V.Y.T.); (A.A.L.)
| | - Andrei A. Lukyanitsa
- Foundation of Perspective Technologies and Novations, Shipilovskaya St. 64, 115682 Moscow, Russia; (V.Y.T.); (A.A.L.)
| | - Nina D. Ivanova
- Skryabin Moscow State Academy of Veterinary Medicine and Biotechnology, Academician Skryabin St. 23, 109472 Moscow, Russia;
| | - Vladimir A. Konev
- Department of Infectious Diseases in Children, Faculty of Pediatrics, Pirogov Russian National Research Medical University, Ostrovityanov St. 1, 117997 Moscow, Russia;
| | - Vadim S. Ziborov
- Laboratory of Nanobiotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10 Build. 8, 119121 Moscow, Russia; (N.S.B.); (V.S.Z.)
- Laboratory of Shock Wave Impacts, Joint Institute for High Temperatures of Russian Academy of Sciences, Izhorskaya St. 13 Build. 2, 125412 Moscow, Russia
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Ivanov YD, Pleshakova TO, Shumov ID, Kozlov AF, Ivanova IA, Valueva AA, Tatur VY, Smelov MV, Ivanova ND, Ziborov VS. AFM Imaging of Protein Aggregation in Studying the Impact of Knotted Electromagnetic Field on A Peroxidase. Sci Rep 2020; 10:9022. [PMID: 32488177 PMCID: PMC7265551 DOI: 10.1038/s41598-020-65888-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 05/12/2020] [Indexed: 11/09/2022] Open
Abstract
The phenomenon of knotted electromagnetic field (KEMF) is now actively studied, as such fields are characterized by a nontrivial topology. The research in this field is mainly aimed at technical applications - for instance, the development of efficient communication systems. Until present, however, the influence of KEMF on biological objects (including enzyme systems) was not considered. Herein, we have studied the influence of KEMF on the aggregation and enzymatic activity of a protein with the example of horseradish peroxidase (HRP). The test HRP solution was irradiated in KEMF (the radiation power density was 10-12 W/cm2 at 2.3 GHz frequency) for 40 min. After the irradiation, the aggregation of HRP was examined by atomic force microscopy (AFM) at the single-molecule level. The enzymatic activity was monitored by conventional spectrophotometry. It has been demonstrated that an increased aggregation of HRP, adsorbed on the AFM substrate surface, was observed after irradiation of the protein sample in KEMF with low (10-12 W/cm2) radiation power density; at the same time, the enzymatic activity remained unchanged. The results obtained herein can be used in the development of models describing the interaction of enzymes with electromagnetic field. The obtained data can also be of importance considering possible pathological factors that can take place upon the influence of KEMF on biological objects- for instance, changes in hemodynamics due to increased protein aggregation are possible; the functionality of protein complexes can also be affected by aggregation of their protein subunits. These effects should also be taken into account in the development of novel highly sensitive systems for human serological diagnostics of breast cancer, prostate cancer, brain cancer and other oncological pathologies, and for diagnostics of diseases in animals, and crops.
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Affiliation(s)
- Yuri D Ivanov
- Institute of Biomedical Chemistry, Pogodinskaya str., 10, Moscow, 119121, 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
| | - Vadim Yu Tatur
- Foundation of Perspective Technologies and Novations, Moscow, 115682, Russia
| | - Mikhail V Smelov
- Foundation of Perspective Technologies and Novations, Moscow, 115682, Russia
| | - Nina D Ivanova
- Skryabin Moscow State Academy of Veterinary Medicine and Biotechnology, Moscow, 109472, 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, Moscow, 125412, Russia
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Ivanov Y, Kozlov AF, Galiullin RA, Tatur VY, Ziborov VS, Ivanova ND, Pleshakova TO, Vesnin SG, Goryanin I. Use of Microwave Radiometry to Monitor Thermal Denaturation of Albumin. Front Physiol 2018; 9:956. [PMID: 30090068 PMCID: PMC6068392 DOI: 10.3389/fphys.2018.00956] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 06/29/2018] [Indexed: 11/25/2022] Open
Abstract
This study monitored thermal denaturation of albumin using microwave radiometry. Brightness Temperature, derived from Microwave Emission (BTME) of an aqueous solution of bovine serum albumin (0.1 mM) was monitored in the microwave frequency range 3.8–4.2 GHz during denaturation of this protein at a temperature of 56°C in a conical polypropylene cuvette. This method does not require fluorescent or radioactive labels. A microwave emission change of 1.5–2°C in the BTME of aqueous albumin solution was found during its denaturation, without a corresponding change in the water temperature. Radio thermometry makes it possible to monitor protein denaturation kinetics, and the resulting rate constant for albumin denaturation was 0.2 ± 0.1 min−1, which corresponds well to rate constants obtained by other methods.
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Affiliation(s)
- Yuri Ivanov
- Institute of Biomedical Chemistry, Moscow, Russia
| | | | | | - Vadim Y Tatur
- Foundation of Advanced Technologies and Innovations, Moscow, Russia
| | - Vadim S Ziborov
- Joint Institute for High Temperatures of Russian Academy of Sciences (RAS), Moscow, Russia
| | - Nina D Ivanova
- Moscow State Academy of Veterinary Medicine and Biotechnology, Moscow, Russia
| | | | - Sergey G Vesnin
- RES LTD, Moscow, Russia.,Medical MicroWave Radiometry (MMWR) LTD, Edinburgh, United Kingdom
| | - Igor Goryanin
- School of Informatics, University of Edinburgh, Edinburgh, United Kingdom.,Biological Systems Unit, Okinawa Institute of Science and Technology, Okinawa, Japan.,Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China
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Influence of a Pulsed Electric Field on Charge Generation in a Flowing Protein Solution. SEPARATIONS 2018. [DOI: 10.3390/separations5020029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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