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Nesterov SV, Ilyinsky NS, Plokhikh KS, Manuylov VD, Chesnokov YM, Vasilov RG, Kuznetsova IM, Turoverov KK, Gordeliy VI, Fonin AV, Uversky VN. Order wrapped in chaos: On the roles of intrinsically disordered proteins and RNAs in the arrangement of the mitochondrial enzymatic machines. Int J Biol Macromol 2024; 267:131455. [PMID: 38588835 DOI: 10.1016/j.ijbiomac.2024.131455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 04/03/2024] [Accepted: 04/05/2024] [Indexed: 04/10/2024]
Abstract
The analysis of cryo-electron tomography images of human and rat mitochondria revealed that the mitochondrial matrix is at least as crowded as the cytosol. To mitigate the crowding effects, metabolite transport in the mitochondria primarily occurs through the intermembrane space, which is significantly less crowded. The scientific literature largely ignores how enzyme systems and metabolite transport are organized in the crowded environment of the mitochondrial matrix. Under crowded conditions, multivalent interactions carried out by disordered protein regions (IDRs), may become extremely important. We analyzed the human mitochondrial proteome to determine the presence and physiological significance of IDRs. Despite mitochondrial proteins being generally more ordered than cytosolic or overall proteome proteins, disordered regions plays a significant role in certain mitochondrial compartments and processes. Even in highly ordered enzyme systems, there are proteins with long IDRs. Some IDRs act as binding elements between highly ordered subunits, while the roles of others are not yet established. Mitochondrial systems, like their bacterial ancestors, rely less on IDRs and more on RNA for LLPS compartmentalization. More evolutionarily advanced subsystems that enable mitochondria-cell interactions contain more IDRs. The study highlights the crucial and often overlooked role played by IDRs and non-coding RNAs in mitochondrial organization.
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Affiliation(s)
- Semen V Nesterov
- National Research Center "Kurchatov Institute", Moscow 123182, Russia; Moscow Institute of Physics and Techonology, Dolgoprudny, Moscow Region 141701, Russia; Institute of Cytology, Russian Academy of Sciences, Saint Petersburg 194064, Russia.
| | - Nikolay S Ilyinsky
- Moscow Institute of Physics and Techonology, Dolgoprudny, Moscow Region 141701, Russia.
| | | | - Vladimir D Manuylov
- Moscow Institute of Physics and Techonology, Dolgoprudny, Moscow Region 141701, Russia
| | - Yuriy M Chesnokov
- National Research Center "Kurchatov Institute", Moscow 123182, Russia
| | - Raif G Vasilov
- National Research Center "Kurchatov Institute", Moscow 123182, Russia
| | - Irina M Kuznetsova
- Institute of Cytology, Russian Academy of Sciences, Saint Petersburg 194064, Russia
| | | | - Valentin I Gordeliy
- Institut de Biologie Structurale Jean-Pierre Ebel, Université Grenoble Alpes-Commissariat à l'Energie Atomique et aux Energies Alternatives-CNRS, 38027 Grenoble, France
| | - Alexander V Fonin
- Institute of Cytology, Russian Academy of Sciences, Saint Petersburg 194064, Russia
| | - Vladimir N Uversky
- Department of Molecular Medicine and USF Health Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd., MDC07, Tampa, FL 33612, USA.
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Nesterov SV, Plokhikh KS, Chesnokov YM, Mustafin DA, Goleva TN, Rogov AG, Vasilov RG, Yaguzhinsky LS. Safari with an Electron Gun: Visualization of Protein and Membrane Interactions in Mitochondria in Natural Environment. Biochemistry (Mosc) 2024; 89:257-268. [PMID: 38622094 DOI: 10.1134/s0006297924020068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 04/17/2024]
Abstract
This paper presents new structural data about mitochondria using correlative light and electron microscopy (CLEM) and cryo-electron tomography. These state-of-the-art structural biology methods allow studying biological objects at nanometer scales under natural conditions. Non-invasiveness of these methods makes them comparable to observing animals in their natural environment on a safari. The paper highlights two areas of research that can only be accomplished using these methods. The study visualized location of the Aβ42 amyloid aggregates in relation to mitochondria to test a hypothesis of development of mitochondrial dysfunction in Alzheimer's disease. The results showed that the Aβ42 aggregates do not interact with mitochondria, although some of them are closely located. Therefore, the study demonstrated that mitochondrial dysfunction is not directly associated with the effects of aggregates on mitochondrial structure. Other processes should be considered as sources of mitochondrial dysfunction. Second unique area presented in this work is high-resolution visualization of the mitochondrial membranes and proteins in them. Analysis of the cryo-ET data reveals toroidal holes in the lamellar structures of cardiac mitochondrial cristae, where ATP synthases are located. The study proposes a new mechanism for sorting and clustering protein complexes in the membrane based on topology. According to this suggestion, position of the OXPHOS system proteins in the membrane is determined by its curvature. High-resolution tomography expands and complements existing ideas about the structural and functional organization of mitochondria. This makes it possible to study the previously inaccessible structural interactions of proteins with each other and with membranes in vivo.
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Affiliation(s)
- Semen V Nesterov
- National Research Center "Kurchatov Institute", Moscow, 123182, Russia.
| | | | - Yuriy M Chesnokov
- National Research Center "Kurchatov Institute", Moscow, 123182, Russia
| | - Denis A Mustafin
- National Research Center "Kurchatov Institute", Moscow, 123182, Russia
| | - Tatyana N Goleva
- National Research Center "Kurchatov Institute", Moscow, 123182, Russia
| | - Anton G Rogov
- National Research Center "Kurchatov Institute", Moscow, 123182, Russia
| | - Raif G Vasilov
- National Research Center "Kurchatov Institute", Moscow, 123182, Russia
| | - Lev S Yaguzhinsky
- Belozersky Research Institute for Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119992, Russia
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Plokhikh KS, Nesterov SV, Chesnokov YM, Rogov AG, Kamyshinsky RA, Vasiliev AL, Yaguzhinsky LS, Vasilov RG. Association of 2-oxoacid dehydrogenase complexes with respirasomes in mitochondria. FEBS J 2024; 291:132-141. [PMID: 37789611 DOI: 10.1111/febs.16965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 08/14/2023] [Accepted: 09/29/2023] [Indexed: 10/05/2023]
Abstract
In the present study, cryo-electron tomography was used to investigate the localization of 2-oxoacid dehydrogenase complexes (OADCs) in cardiac mitochondria and mitochondrial inner membrane samples. Two classes of ordered OADC inner cores with different symmetries were distinguished and their quaternary structures modeled. One class corresponds to pyruvate dehydrogenase complexes and the other to dehydrogenase complexes of α-ketoglutarate and branched-chain α-ketoacids. OADCs were shown to be localized in close proximity to membrane-embedded respirasomes, as observed both in densely packed lamellar cristae of cardiac mitochondria and in ruptured mitochondrial samples where the dense packing is absent. This suggests the specificity of the OADC-respirasome interaction, which allows localized NADH/NAD+ exchange between OADCs and complex I of the respiratory chain. The importance of this local coupling is based on OADCs being the link between respiration, glycolysis and amino acid metabolism. The coupling of these basic metabolic processes can vary in different tissues and conditions and may be involved in the development of various pathologies. The present study shows that this important and previously missing parameter of mitochondrial complex coupling can be successfully assessed using cryo-electron tomography.
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Affiliation(s)
- Konstantin S Plokhikh
- Kurchatov Complex of NBICS-Technologies, National Research Center Kurchatov Institute, Moscow, Russia
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre "Crystallography and Photonics" of Russian Academy of Sciences, Moscow, Russia
| | - Semen V Nesterov
- Kurchatov Complex of NBICS-Technologies, National Research Center Kurchatov Institute, Moscow, Russia
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Yuriy M Chesnokov
- Kurchatov Complex of NBICS-Technologies, National Research Center Kurchatov Institute, Moscow, Russia
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre "Crystallography and Photonics" of Russian Academy of Sciences, Moscow, Russia
| | - Anton G Rogov
- Kurchatov Complex of NBICS-Technologies, National Research Center Kurchatov Institute, Moscow, Russia
| | - Roman A Kamyshinsky
- Kurchatov Complex of NBICS-Technologies, National Research Center Kurchatov Institute, Moscow, Russia
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre "Crystallography and Photonics" of Russian Academy of Sciences, Moscow, Russia
| | - Aleksandr L Vasiliev
- Kurchatov Complex of NBICS-Technologies, National Research Center Kurchatov Institute, Moscow, Russia
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre "Crystallography and Photonics" of Russian Academy of Sciences, Moscow, Russia
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Lev S Yaguzhinsky
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
- Belozersky Research Institute for Physico-Chemical Biology, Lomonosov Moscow State University, Russia
| | - Raif G Vasilov
- Kurchatov Complex of NBICS-Technologies, National Research Center Kurchatov Institute, Moscow, Russia
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4
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Doronin IA, Bushnev SO, Vasilov RG, Tsygankov AA. Photosystem II for photoelectrochemical hydrogen production. Biophys Rev 2023; 15:907-920. [PMID: 37975003 PMCID: PMC10643564 DOI: 10.1007/s12551-023-01139-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 09/03/2023] [Indexed: 11/19/2023] Open
Abstract
Water is a primary source of electrons and protons for photosynthetic organisms. For the production of hydrogen through the process of mimicking natural photosynthesis, photosystem II (PSII)-based hybrid photosynthetic systems have been created, both with and without an external voltage source. In the past 30 years, various PSII immobilization techniques have been proposed, and redox polymers have been created for charge transfer from PSII. This review considers the main components of photosynthetic systems, methods for evaluating efficiency, implemented systems and the ways to improve them. Recently, low-overpotential catalysts have emerged that do not contain precious metals, which could ultimately replace Pt and Ir catalysts and make water electrolysis cheaper. However, PSII competes with semiconductor analogues that are less efficient but more stable. Methods originally created for sensors also allow for the use of PSII as a component of a photoanode. To date, charge transfer from PSII remains a bottleneck for such systems. Novel data about action mechanism of artificial electron acceptors in PSII could develop redox polymers to level out mass transport limitations. Hydrogen-producing systems based on PSII have allowed to work out processes in artificial photosynthesis, investigate its features and limitations. Supplementary Information The online version contains supplementary material available at 10.1007/s12551-023-01139-5.
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Affiliation(s)
- Ivan A. Doronin
- National Research Centre “Kurchatov Institute”, Kurchatova sq., 1, Moscow, 123182 Russia
- Federal Research Center “Pushchino’s center of Biological Research, of Basic Biological Problems of Russian Academy of Sciences, Institutskaya st 2, Moscow, 142290 Russia
| | - Sergey O. Bushnev
- National Research Centre “Kurchatov Institute”, Kurchatova sq., 1, Moscow, 123182 Russia
| | - Raif G. Vasilov
- National Research Centre “Kurchatov Institute”, Kurchatova sq., 1, Moscow, 123182 Russia
| | - Anatoly A. Tsygankov
- Federal Research Center “Pushchino’s center of Biological Research, of Basic Biological Problems of Russian Academy of Sciences, Institutskaya st 2, Moscow, 142290 Russia
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Nesterov SV, Yaguzhinsky LS, Vasilov RG, Kadantsev VN, Goltsov AN. Contribution of the Collective Excitations to the Coupled Proton and Energy Transport along Mitochondrial Cristae Membrane in Oxidative Phosphorylation System. Entropy (Basel) 2022; 24:1813. [PMID: 36554218 PMCID: PMC9778164 DOI: 10.3390/e24121813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/06/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Abstract
The results of many experimental and theoretical works indicate that after transport of protons across the mitochondrial inner membrane (MIM) in the oxidative phosphorylation (OXPHOS) system, they are retained on the membrane-water interface in nonequilibrium state with free energy excess due to low proton surface-to-bulk release. This well-established phenomenon suggests that proton trapping on the membrane interface ensures vectorial lateral transport of protons from proton pumps to ATP synthases (proton acceptors). Despite the key role of the proton transport in bioenergetics, the molecular mechanism of proton transfer in the OXPHOS system is not yet completely established. Here, we developed a dynamics model of long-range transport of energized protons along the MIM accompanied by collective excitation of localized waves propagating on the membrane surface. Our model is based on the new data on the macromolecular organization of the OXPHOS system showing the well-ordered structure of respirasomes and ATP synthases on the cristae membrane folds. We developed a two-component dynamics model of the proton transport considering two coupled subsystems: the ordered hydrogen bond (HB) chain of water molecules and lipid headgroups of MIM. We analytically obtained a two-component soliton solution in this model, which describes the motion of the proton kink, corresponding to successive proton hops in the HB chain, and coherent motion of a compression soliton in the chain of lipid headgroups. The local deformation in a soliton range facilitates proton jumps due to water molecules approaching each other in the HB chain. We suggested that the proton-conducting structures formed along the cristae membrane surface promote direct lateral proton transfer in the OXPHOS system. Collective excitations at the water-membrane interface in a form of two-component soliton ensure the coupled non-dissipative transport of charge carriers and elastic energy of MIM deformation to ATP synthases that may be utilized in ATP synthesis providing maximal efficiency in mitochondrial bioenergetics.
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Affiliation(s)
- Semen V. Nesterov
- Kurchatov Complex of NBICS-Technologies, National Research Center Kurchatov Institute, 123182 Moscow, Russia
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, 141701 Dolgoprudny, Russia
| | - Lev S. Yaguzhinsky
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, 141701 Dolgoprudny, Russia
- Department of Bioenergetics, Institute of Cytochemistry and Molecular Pharmacology, 115404 Moscow, Russia
- Belozersky Research Institute for Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Raif G. Vasilov
- Kurchatov Complex of NBICS-Technologies, National Research Center Kurchatov Institute, 123182 Moscow, Russia
| | - Vasiliy N. Kadantsev
- Institute for Artificial Intelligence, Russian Technological University (MIREA), 119454 Moscow, Russia
| | - Alexey N. Goltsov
- Institute for Artificial Intelligence, Russian Technological University (MIREA), 119454 Moscow, Russia
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Shchelkonogov VA, Alyaseva SO, Lotosh NY, Baranova OA, Chekanov AV, Solov'eva EY, Kamyshinskii RA, Vasilov RG, Shastina NS, Korepanova EA, Anosov AA, Selishcheva AA. Correction to: Lipoic acid nanoforms based on phosphatidylcholine: production and characteristics. Eur Biophys J 2021; 50:1157. [PMID: 34553244 DOI: 10.1007/s00249-021-01571-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- V A Shchelkonogov
- MIREA-Russian Technological University, Moscow, 119571, Russia.,Pirogov Russian National Research Medical University, Russian Ministry of Public Health, Moscow, 117997, Russia
| | - S O Alyaseva
- MIREA-Russian Technological University, Moscow, 119571, Russia
| | - N Yu Lotosh
- National Research Center Kurchatov Institute, Moscow, 123182, Russia
| | - O A Baranova
- Pirogov Russian National Research Medical University, Russian Ministry of Public Health, Moscow, 117997, Russia
| | - A V Chekanov
- Pirogov Russian National Research Medical University, Russian Ministry of Public Health, Moscow, 117997, Russia.
| | - E Yu Solov'eva
- Pirogov Russian National Research Medical University, Russian Ministry of Public Health, Moscow, 117997, Russia
| | - R A Kamyshinskii
- National Research Center Kurchatov Institute, Moscow, 123182, Russia
| | - R G Vasilov
- National Research Center Kurchatov Institute, Moscow, 123182, Russia
| | - N S Shastina
- MIREA-Russian Technological University, Moscow, 119571, Russia
| | - E A Korepanova
- Pirogov Russian National Research Medical University, Russian Ministry of Public Health, Moscow, 117997, Russia.,Sechenov First Moscow State Medical University (Sechenov University), Moscow, 119991, Russia
| | - A A Anosov
- Sechenov First Moscow State Medical University (Sechenov University), Moscow, 119991, Russia
| | - A A Selishcheva
- National Research Center Kurchatov Institute, Moscow, 123182, Russia.,Department of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia.,Pirogov Russian National Research Medical University, Russian Ministry of Public Health, Moscow, 117997, Russia
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Viazau YV, Goncharik RG, Kulikova IS, Kulikov EA, Vasilov RG, Selishcheva AA. E/Z isomerization of astaxanthin and its monoesters in vitro under the exposure to light or heat and in overilluminated Haematococcus pluvialis cells. BIORESOUR BIOPROCESS 2021; 8:55. [PMID: 38650253 PMCID: PMC10992054 DOI: 10.1186/s40643-021-00410-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 06/24/2021] [Indexed: 12/19/2022] Open
Abstract
Thermo- and photoisomerization of astaxanthin was investigated in a model system (solutions in methanol and chloroform), and the dynamics of astaxanthin isomers and esters content was analyzed in Haematococcus pluvialis green algal cells exposed to factors inducing astaxanthin accumulation. In both systems, the astaxanthin isomerization process seems to be defined by a) the action of light (or heat), and b) the dielectric constant of the surrounding medium. Upon heating, the accumulation of Z-isomers occurred in a model system during the entire incubation period. For the first 5 h of illumination, both Z-isomers accumulated in the solutions up to 5%, and then their content decreased. The accumulated amount of the Z-isomers in the cells of H. pluvialis was found to reach 42% of the total content of astaxanthin initially, and then it decreased during the experiment. The results lead to a conclusion that both cultivation of H. pluvialis culture in specific conditions and heat treatment of the resulting extracts from it might be efficient for obtaining large amounts of economically useful astaxanthin Z-isomer.
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Affiliation(s)
- Yauhen V Viazau
- Institute of Biophysics and Cell Engineering, National Academy of Sciences of Belarus, Akademicheskaya St. 27, 220072, Minsk, Belarus.
| | - Ruslan G Goncharik
- Institute of Biophysics and Cell Engineering, National Academy of Sciences of Belarus, Akademicheskaya St. 27, 220072, Minsk, Belarus
| | - Irina S Kulikova
- National Research Center Kurchatov Institute, Akademika Kurchatova Sq. 1, Moscow, 123182, Russia
| | - Evgeny A Kulikov
- National Research Center Kurchatov Institute, Akademika Kurchatova Sq. 1, Moscow, 123182, Russia
| | - Raif G Vasilov
- National Research Center Kurchatov Institute, Akademika Kurchatova Sq. 1, Moscow, 123182, Russia
| | - Alla A Selishcheva
- National Research Center Kurchatov Institute, Akademika Kurchatova Sq. 1, Moscow, 123182, Russia
- Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russia
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Shchelkonogov VA, Alyaseva SO, Lotosh NY, Baranova OA, Chekanov AV, Solov'eva EY, Kamyshinskii RA, Vasilov RG, Shastina NS, Korepanova EA, Anosov AA, Selishcheva AA. Lipoic acid nanoforms based on phosphatidylcholine: production and characteristics. Eur Biophys J 2019; 49:95-103. [PMID: 31865397 DOI: 10.1007/s00249-019-01415-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 10/16/2019] [Accepted: 12/11/2019] [Indexed: 11/30/2022]
Abstract
We describe the dynamics of lipoic acid (LA) alone, incorporated in liposomes and as a part of nanoemulsions. Mass spectrometry shows that LA in water forms aggregates of two or three molecules in the form of a negatively charged ion and a neutral molecule. Phosphatidylcholine (PC)-based nanoforms of LA as liposomes and nanoemulsions with a particle size equal to 145 nm are characterized by a high degree of incorporation of LA into the nanoparticles and long-term stability during storage at room temperature. Dynamic light scattering (DLS) gives the polydispersity index of the nanoforms (> 0.3), characterizing the homogeneity of the obtained nanodispersions. We found that such emulsions can significantly (5 ×) increase the concentration of LA in the aqueous phase (5-7 mg/mL) when compared with an aqueous solution of LA (1 mg/mL) and by 40% when compared with PC liposomes (4 mg/mL). Moreover, the inclusion of LA in liposomes and nanoemulsions from PC did not change the neutral ζ-potential characteristic of PC nanoforms. CryoTEM established that the structural organization of the liposomes practically did not differ from nanoemulsions and both nanoforms contained both multilayer and single-layer vesicles. When studying the release kinetics of LA from phosphatidylcholine nanoforms, we found that at 22 h, 45-55% of LA was released from nanoparticles, but that at the initial stage of the process LA was slowly released from the nanoemulsions and rapidly from the liposomes. Conductance measurements indicate that LA delivered in all the three forms increase membrane permeability, though this result is most marked with the LA in PC liposomes.
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Affiliation(s)
- V A Shchelkonogov
- MIREA-Russian Technological University, Moscow, 119571, Russia.,Pirogov Russian National Research Medical University, Russian Ministry of Public Health, Moscow, 117997, Russia
| | - S O Alyaseva
- MIREA-Russian Technological University, Moscow, 119571, Russia
| | - N Yu Lotosh
- National Research Center Kurchatov Institute, Moscow, 123182, Russia
| | - O A Baranova
- Pirogov Russian National Research Medical University, Russian Ministry of Public Health, Moscow, 117997, Russia
| | - A V Chekanov
- Pirogov Russian National Research Medical University, Russian Ministry of Public Health, Moscow, 117997, Russia.
| | - E Yu Solov'eva
- Pirogov Russian National Research Medical University, Russian Ministry of Public Health, Moscow, 117997, Russia
| | - R A Kamyshinskii
- National Research Center Kurchatov Institute, Moscow, 123182, Russia
| | - R G Vasilov
- National Research Center Kurchatov Institute, Moscow, 123182, Russia
| | - N S Shastina
- MIREA-Russian Technological University, Moscow, 119571, Russia
| | - E A Korepanova
- Pirogov Russian National Research Medical University, Russian Ministry of Public Health, Moscow, 117997, Russia.,Sechenov First Moscow State Medical University (Sechenov University), Moscow, 119991, Russia
| | - A A Anosov
- Sechenov First Moscow State Medical University (Sechenov University), Moscow, 119991, Russia
| | - A A Selishcheva
- National Research Center Kurchatov Institute, Moscow, 123182, Russia.,Department of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia.,Pirogov Russian National Research Medical University, Russian Ministry of Public Health, Moscow, 117997, Russia
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Chernov AS, Reshetnikov DA, Ristsov GK, Kovalitskaya YA, Ermakov AM, Manokhin AA, Simakin AV, Vasilov RG, Gudkov SV. Influence of electromagnetic waves, with maxima in the green or red range, on the morphofunctional properties of multipotent stem cells. J Biol Phys 2019; 45:317-334. [PMID: 31595390 PMCID: PMC6917679 DOI: 10.1007/s10867-019-09531-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 08/27/2019] [Indexed: 12/16/2022] Open
Abstract
This paper examines the effect of electromagnetic waves, with maxima in the green or red regions of the spectrum, on the morphofunctional state of multipotent mesenchymal stromal cells. The illumination regimes used in our experiments did not lead to any substantial heating of the samples; the physical parameters of the lighting were carefully monitored. When the samples were illuminated with a green light, no significant photostimulatory effect was observed. Red light, on the other hand, had an evident photostimulatory effect. It is shown that photostimulation with a red light decreases the enzymatic activities of mitochondrial dehydrogenases and enhances the viability of cells, their proliferative activity, and their ability to form bone tissue. It is also established that red light stimulates cell proliferation, while not activating the genes that increase the risk of the subsequent malignant transformation of cells or their death. This paper discusses the possible role of hydrogen peroxide in the processes examined.
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Affiliation(s)
- A S Chernov
- National Research Center "Kurchatov Institute", Akademika Kurchatova pl. 1, Moscow, Russia, 123182.
| | - D A Reshetnikov
- Institute of Cell Biophysics, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Russian Academy of Sciences, Nauki Ave., 3, Pushchino, Moscow Region, Russia, 142290
| | - G K Ristsov
- Institute of Biochemistry and Physiology of Microorganisms, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Russian Academy of Sciences, Nauki Ave., 3, Pushchino, Moscow Region, Russia, 142290
| | - Yu A Kovalitskaya
- Branch of the Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Institutskaya St. 6, Pushchino, Moscow Oblast, Russia, 142290
| | - A M Ermakov
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, Institutskaya St. 6, Pushchino, Moscow Region, Russia, 142290
| | - A A Manokhin
- Institute of Cell Biophysics, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Russian Academy of Sciences, Nauki Ave., 3, Pushchino, Moscow Region, Russia, 142290
| | - A V Simakin
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilova Ave., 38, Moscow, Russia, 119991
| | - R G Vasilov
- National Research Center "Kurchatov Institute", Akademika Kurchatova pl. 1, Moscow, Russia, 123182
| | - S V Gudkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilova Ave., 38, Moscow, Russia, 119991
- All-Russia Research Institute for Phytopathology, B. Vyazyomy, Moscow Region, Russia, 143050
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10
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Vikha GV, Poletaeva OA, Vasilov RG. CAg 25: a novel tumor-associated mucin antigen. Hum Antibodies 2000; 9:139-41. [PMID: 10690625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Affiliation(s)
- G V Vikha
- Institute of Biotechnology, Moscow, Russia.
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11
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Bekman NI, Tarasova ON, Danilova NP, Vasilov RG. [Drug monitoring during the treatment with theophylline preparations of children with bronchial asthma]. Klin Lab Diagn 1999:11-2. [PMID: 10399430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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Firsov AA, Vasilov RG, Vostrov SN, Kononenko OV, Lubenko IY, Zinner SH. Prediction of the antimicrobial effects of trovafloxacin and ciprofloxacin on staphylococci using an in-vitro dynamic model. J Antimicrob Chemother 1999; 43:483-90. [PMID: 10350376 DOI: 10.1093/jac/43.4.483] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
To compare the pharmacodynamics of trovafloxacin and ciprofloxacin, three clinical isolates of Staphylococcus aureus with different MICs (0.03, 0.15, 0.6 and 0.1, 0.25, 1.25 mg/L, respectively) were exposed to decreasing concentrations of the quinolones according to their half-lives of 9.25 and 4 h, respectively. With each organism, single doses of trovafloxacin and twice-daily doses of ciprofloxacin were designed to provide 8-fold ranges of the ratio of area under the concentration-time curve (AUC) to the MIC, 58-466 and 116-932 (mg x h/L)/(mg/L), respectively. The antimicrobial effect was expressed by its intensity: the area between the control growth in the absence of antibiotics and the antibiotic-induced time-kill/regrowth curves (I(E)). Linear relationships established between I(E) and log AUC/MIC were bacterial strain-independent but specific for the quinolones (r2 = 0.99 in both cases). At a given AUC/MIC ratio, the I(E)s of trovafloxacin were greater than those of ciprofloxacin, suggesting that the antimicrobial effect of trovafloxacin compared with ciprofloxacin against staphylococci may be even greater than might be expected from the difference in their MICs. These data were combined with previous results obtained with three Gram-negative bacteria. Again, I(E) correlated well with the log AUC/MIC of trovafloxacin and ciprofloxacin in a strain- and species-independent fashion (r2 = 0.94 and 0.96, respectively). On this basis, a value of the AUC/MIC of trovafloxacin which might be equivalent to Schentag's AUC/MIC = 125 (mg x h/L)/(mg/L) reported as the breakpoint value for ciprofloxacin was estimated at 71 (mg x h/L)/(mg/L) with the respective MIC breakpoint of 0.27 mg/L. Based on the I(E)-log AUC/MIC relationships, the I(E)s were plotted against the logarithm of trovafloxacin and ciprofloxacin dose (D) for hypothetical representatives of S. aureus, Escherichia coli, Klebsiella pneumoniae and Pseudomonas aeruginosa with MICs corresponding to the MIC50s. These I(E)-log D relationships allow prediction of the effect of a given quinolone on a representative strain of the bacterial species.
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Affiliation(s)
- A A Firsov
- Department of Pharmacokinetics, Centre of Science & Technology LekBioTech, Moscow, Russia.
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13
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Pokid'ko IN, Isaeva SA, Mnasina EE, Danilova NP, Vasilov RG. [Effect of anti-digoxin monoclonal antibodies on cardiac function disturbances induced by high concentrations of digoxin]. Biull Eksp Biol Med 1998; 125:688-91. [PMID: 9693769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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14
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Alexeev LP, Korenkova EV, Yan G Moisiuk Y, Muromtseva IB, Tonevitsky AG, Dolbin AG, Sechkin AV, Shumakov VI, Vasilov RG, Khaitov RM. Pretreatment of kidney allografts with anti-CD5 immunotoxin: a new chance for high responder recipients. Transplant Proc 1997; 29:3605-6. [PMID: 9414856 DOI: 10.1016/s0041-1345(97)01042-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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15
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Pokid'ko IN, Vasilov RG. [Thermodynamic parameters of binding of anti-theophylline mouse monoclonal antibodies 2G3 to theophylline]. Biull Eksp Biol Med 1997; 124:570-3. [PMID: 9471260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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16
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Sigal ER, Koriazova LK, Kovalevskaia GI, Pozdniakova TA, Kandyba EI, Kuznetsov VA, Vasilov RG. [Development of monoclonal antibody-based immunoenzyme kit for detection of human thyrotropin hormone]. Klin Lab Diagn 1997:21-4. [PMID: 9221072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
An enzyme immunoassay kit based on monoclonal antibodies (Mab) has been developed for measuring thyroid-stimulating hormone in human serum and plasma. Laboratory trials demonstrated its high sensitivity (3.1 microIU/ml), specificity, reliability, and accuracy. The analysis is simple and rapid (2.5 h), which is convenient for clinical use. The kit permits differentiation between normal subjects and patients with primary hypo- or hyperthyroidism and helps monitor the treatment efficacy. Comparison with the Amerlite TSH-60 kit, carried out on 357 sera, showed a high correlation coefficient (0.96) between the two kits.
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17
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Pokid'ko IN, Vasilov RG. [Thermodynamic parameters of binding of murine antitheophylline monoclonal antibodies 2G3 with theophylline]. Biull Eksp Biol Med 1997; 123:442-5. [PMID: 9190190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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18
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Kaĭgorodov VA, Ptitsyn LR, Pivniuk VI, Kondrat'eva IA, Al'tman IB, Vasilov RG. [Expression of human IgE-binding factor (sCD23) in Escherichia coli cells]. Biull Eksp Biol Med 1996; 121:690-4. [PMID: 9035769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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19
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Vial'tseva II, Bukhvalov IB, Vasilov RG. [Differential immunohistochemical diagnosis of tumors of the human central nervous system using monoclonal antibodies]. Arkh Patol 1996; 58:28-32. [PMID: 8712936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
67 brain tumors were studied using monoclonal antibodies against glial fibrillary acid protein (GFAP), neurofilaments, proteoglycan, laminin and vimentin. All the astrocytic tumors gave positive reaction to GFAP, but anaplastic tumors of this type were less reactive. Medulloblastomas when treated with GFAP showed two cell lines, astrocytic and neuronal. A positive reaction to laminin and proteoglycan was observed in the vessels of neuroepithelial tumors. Anaplastic astrocytomas were more reactive to vimentin.
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Danilova NP, Mertts MV, Lokshin DR, Vasilov RG. [Prospects for use of hapten-heterologous conjugates in immunoassay of thyroid hormones]. Bioorg Khim 1996; 22:34-8. [PMID: 8651954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The effect of hapten heterology on the characteristics of indirect ELISA methods for determination of thyroxine and triiodothyronine using monoclonal antibodies was studied. The use of the heterologous triiodothyronine-bovine serum albumin conjugate in immunoassays for thyroxine improved the sensitivity of these assays twofold and reduced the cross-reactivity with triiodothyronine from 1 to 0.5% as compared to the homologous variant. By contrast, the heterology in the immunoassays for triiodothyronine appeared inadequate. It was shown that the specificity and sensitivity of hapten immunoassays can be modulated by altering the chemical structure of the hapten-label conjugate, which is most evident in experiments with monoclonal antibodies.
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21
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Sergeeva AI, Serdiuk OA, Vasilov RG. [An immunoenzyme test system for screening neonates for predisposition to allergies]. Biull Eksp Biol Med 1995; 120:418-21. [PMID: 8595237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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22
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Danilova NP, Bekman NI, Podymova NG, Maksutova AL, Zheleznova EV, Vasilov RG. [Determination of phenobarbital by solid-phase immunoenzyme analysis. Choice of optimal strategy]. Bioorg Khim 1995; 21:632-635. [PMID: 8540904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Two variants (direct and indirect) of enzyme linked immunosorbent assay (ELISA) of phenobarbital are compared. Both techniques were developed on the basis of the same monoclonal antibodies, and horse radish peroxidase was used as the label in both cases. When microtitration plates are used as the solid phase, indirect ELISA, in which phenobarbital of the sample competes with phenobarbital sorbed on plates in the form of a conjugate with protein for the binding with peroxidase-labeled antiphenobarbital antibodies, is preferable. In indirect ELISA, the sample volume was 5 microliters, the time of assay was 40 min, the variability coefficient was < 8%.
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Danilova NP, Mertts MV, Sorokolit TP, Vasilov RG. [Individual variation of immune response to thyroid hormones in BALB/c mice]. Biull Eksp Biol Med 1995; 119:80-2. [PMID: 7718812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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24
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Vikha GV, Uzhinova LD, Kashaeva AZ, Goshev VV, Krylov AV, Baryshnikov AI, Vasilov RG. [Synthesis and properties of CD5-ricin immunotoxin]. Biull Eksp Biol Med 1995; 119:76-9. [PMID: 7536484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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25
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Koriazova LK, Kovalevskaia GI, Sigal ER, Pozdniakova TA, Petrova EN, Samoĭlova VE, Vasilov RG. [Preparation of appropriate diagnostic systems of monoclonal antibodies based on human thyroid hormone, and their use in clinical practice]. Biull Eksp Biol Med 1994; 118:433-5. [PMID: 7532463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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26
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Chelidze LK, Lebedin IS, Tsytsikov EN, Pivniuk VI, Vasilov RG. [Effect of recombinant interleukin-4 on immunoglobulin synthesis in cultured human peripheral blood mononuclear cells]. Biull Eksp Biol Med 1994; 118:426-8. [PMID: 7865826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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27
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Vasilov RG, Chelidze LK, Lebedin IS, Chukanov SV, Tsytsikov EN, Pivniuk VI. [Interconnection between expression of surface markers and synthesis of immunoglobulin E by peripheral blood mononuclear cells under the effect of recombinant interleukin-4]. Biull Eksp Biol Med 1994; 118:421-5. [PMID: 7865825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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28
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Vikha GV, Poletaeva OA, Vasilov RG. [Characteristics of a mucin-like antigen, expressed on tumors of epithelial genesis]. Biull Eksp Biol Med 1994; 118:429-32. [PMID: 7865827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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29
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Alekseev LP, Boldyreva MN, Vasilov RG, Trofimov DI, Undritsov IM, Khaitov RM, Iakusheva LM, Iazdovskiĭ VV. [Molecular genetic approaches to studying HLA systems: new prospects in basic and applied research]. Biull Eksp Biol Med 1994; 118:436-9. [PMID: 7865828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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30
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Pivniuk VI, Chelidze LK, Martsen EO, Tsytsikov EN, Vasilov RG. [Low affinity human IgE receptor: cloning cDNA from B-lymphocytes of cell line 1B and study of its expression in peripheral blood B-cells]. Mol Biol (Mosk) 1994; 28:840-845. [PMID: 7990812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Previously, the cDNA coding for human low-affinity receptor for IgE (FcERII/CD23) was cloned by three independent groups. Using oligonucleotide probes corresponding to the published cDNA sequence of CD23, we have isolated cDNA clones encoding FcERII from the cDNA library of B-lymphoblastoid cell line 1B obtained in our laboratory. Cloned nucleotide sequences of FcERII were shown to be identical to those from the RPMI8866 cell line. Using a DNA fragment containing the full-length cDNA copy of CD23 as a probe, CD23 expression in highly purified peripheral blood B lymphocytes was shown to be induced by recombinant human IL4 in a clearly dose-dependent manner.
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31
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Danilova NP, Dzgoev AB, Bekman NI, Vasilov RG. [Preparation of monoclonal antibodies to phenobarbital]. Bioorg Khim 1993; 19:950-4. [PMID: 8274169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Monoclonal antibodies to phenobarbital have been developed. Spleen cells of BALB/c mouse immunized with conjugate keyhole limpet haemocyanin and phenobarbital were fused with P3-X63-Ag8.653 mouse myeloma cells. Three monoclonal antibodies, selected by indirect ELISA, were produced in mouse ascite fluids, purified and analyzed. Antibody 1A9 was selected for use in immunoassay, its association constant being 1.6 x 10(9) M-1.
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32
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Dzgoev AB, Eremin SA, Karpov MV, Danilova NP, Vasilov RG, Egorov AM. [Determination of phenobarbital by polarized fluoroimmunoanalysis. The effect of immunogen structure and tracer on specificity and detection limit]. Bioorg Khim 1993; 19:713-21. [PMID: 8373451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The influence of the immunogen's tracer's structure on properties of antibodies to phenobarbital was studied by the polarisation fluoroimmunoassay method. It was shown that in homogeneous method of polarisation fluoroimmunoassay the titer of antibodies to phenobarbital (1/1000-1/10,000) is affected by the position of linker binding the antigen with carrier-protein and by the structure of the linker. The affinity constant ((1-4) x 10(9) M-1), cross-reactivity, limit of the detection (0.6-2.6 micrograms/ml) phenobarbital with different combinations of antibodies and tracers were calculated. The antisera grew the more heterogeneous in affinity and specificity, the longer became the linker. The more heterogeneous antibodies are preferable in the class specific assay of barbiturates.
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Danilova ND, Krupina NV, Mertts MV, Vasilov RG. [Preparing monoclonal antibodies to thyroxine]. Bioorg Khim 1993; 19:704-12. [PMID: 8373450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Spleen cells of BALB/c mouse immunized with the keyhole limpet haemocyanin and thyroxine conjugate were fused with P3-X63-Ag8.653 mouse myeloma cells to produce. Four monoclonal antibodies selected by indirect ELISA and partially characterized. One antibody, 1B7, chosen for immunoassay, was produced in mouse ascites fluid, purified and analyzed; it proved to belong to the IgG1 subclass. The cross-reactivity with triiodothyronine was less than 1%, the association constant was 3 x 10(9) M-1.
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Abstract
An immunometric method for determination of hapten concentration in fluids has been developed. High-affinity hapten-specific enzyme-labeled monoclonal antibodies are mixed with a sample containing hapten, then the mixture is filtered through a membrane with immobilized hapten. The level of enzyme activity retained by the membrane is inversely proportional to the concentration of hapten in a sample. The assay has been developed for theophylline, digoxin and phenobarbital. The coefficient of variation is less than 5% and the test takes about 2 min.
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Affiliation(s)
- N P Danilova
- Department of Medical Diagnostics, Institute of Biotechnology, Moscow, Russia
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35
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Lebedin YS, Gorchakov VD, Petrova EN, Kobylyansky AG, Raudla LA, Tatarsky AR, Bobkov EV, Adamova IY, Vasilov RG, Nasonov EL. Ex vivo removal of IgE in atopic asthma by extracorporeal plasmoimmunoadsorption (EPIA): development of a clinical adsorbent. Int J Artif Organs 1991; 14:508-14. [PMID: 1937940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We have developed an immunoadsorbent (IA) for ex vivo removal of IgE after in vitro screening of matrix (Sepharose and tresyl-activated Toyopearl) and ligand (monospecific rabbit polyclonal anti-IgE antiserum and monoclonal antibodies (Abs) or their Fab fragments). Specific adsorptive capacity (SAC) for IgE was maximal in Sepharose-based IA with both types of Abs. Fab-containing IA on Sepharose retained 70-90% of the SAC of native Ab-containing IA. Toyopearl-based IA showed comparable SAC under static conditions but worked unsatisfactorily under continuous flow conditions. To assess the complement-activating capacity (CAC) of IA in vitro anaphylatoxin (C3a, C4a, C5a) generation was applied. CAC was directly related with the amount of immobilized Ab ligand, without depending on Ab specific activity. Fab-containing IA showed more CAC than native Ab-containing IA, and polyclonal IA more than monoclonal IA. Therefore, IA for IgE apheresis were prepared from native monoclonal Abs and CNBr-activated Sepharose CL 4B under aseptic conditions and packed into a glass column. This IA was used in 17 clinical IgE apheresis treatments of five atopic asthma patients. No substantial side effects were observed; in vivo IA effectively removed IgE from plasma (83 to 98%).
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Affiliation(s)
- Y S Lebedin
- Institute of Pulmonology, Cardiology Research Centre, Moscow, USSR
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36
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Gaĭdar LI, Berezin VA, Vasilov RG. [Expression of glial fibrillary acidic protein in the developing human brain]. Biokhimiia 1991; 56:1322-9. [PMID: 1718451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
It was shown that the glial fibrillary acidic protein (GFAP) content in developing (fetal) human brain is sharply increased. The expression of GFAP was observed already on the 7th-8th week after gestation, the GFAP concentration being less than 0.05% in comparison with adult brain. GFAP can be immunohistochemically detected in radial glial cells. At early stages of development the presence of antigenic determinants of 68 kDa and 100 kDa polypeptides interacting with monoclonal antibodies alongside with native GFAP (51 kDa) and its low molecular weight forms was demonstrated. These antigenic determinants cannot be detected at later stages of development and are absent in adult brain. The data obtained testify to changes in the gene expression of intermediate filament proteins at early stages of human brain ontogenesis.
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37
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Dzgoev AB, Eremin SA, Danilova NP, Egorov AM, Vasilov RG. [Quantitative determination of phenobarbital in human blood serum by fluorescence polarization immunoanalysis]. Vopr Med Khim 1991; 37:85-6. [PMID: 1949701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Abstract
Spleen cells from BALB/c mice immunised with KLH-theophylline conjugate were fused with a mouse myeloma cell line P3-X63-Ag8.653, and antibody-producing hybrids were identified by enzyme immunoassay. Three cell clones were obtained, each capable of producing a unique monoclonal antibody to theophylline. Using these monoclonal antibodies, an immunoassay system for theophylline was developed.
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Affiliation(s)
- N D Danilova
- Department of Medical Diagnostics, Institute of Biotechnology, Moscow, U.S.S.R
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Affiliation(s)
- R G Vasilov
- All Union Scientific Research Institute of Biotechnology, Moscow, U.S.S.R
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Smirnova EI, Lebedin IS, Serdiuk OA, Vasilov RG. [The use of monoclonal antibodies with human IgE for determining the level of allergen-specific IgE]. Zh Mikrobiol Epidemiol Immunobiol 1990:93-7. [PMID: 2256410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The possibility of using monoclonal antibodies to human IgE, obtained in our laboratory, with the aim to determine allergen-specific IgE in the radioallergosorbent test (RAST), the enzyme immunoassay and the radioimmunoassay has been studied. The results obtained with the use of the standard RAST system (manufactured by Pharmacia, Sweden) and different variants of assay based on the use of our antibodies, labeled with 125I or conjugated with peroxidase, and timothy pollen allergen (obtained from the Stavropol Research Institute for Vaccines and Sera) have been compared. The best results have been obtained with anti-IgE antibodies 11-2, but for working out our assay systems it is necessary to develop our own standards and control limits.
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Serdyuk OA, Vasilov RG. Analysis of human major histocompatibility complex antigens by electrophoretic methods with subsequent immunoblotting. Biomed Sci 1990; 1:384-90. [PMID: 2133057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A fast, simple, and sensitive technique is described for the biochemical analysis of human MHC class I antigens. It is based on 2-D electrophoresis or 1-D isoelectric focusing, followed by immunoblotting. The need for radiolabelling of the cells is eliminated, and because whole cell lysates can be used the number of cells needed for analysis is reduced tenfold over conventional immunoprecipitation techniques. The method can also be used to analyze certain MHC class II antigens.
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Affiliation(s)
- O A Serdyuk
- All-Union Research Institute of Biotechnology, Ministry of Medical Industry of the USSR, Moscow
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Serdiuk OA, Tsytsikov EN, Vasilov RG. [Monoclonal antibody-based immunoenzyme test system for determining the total immunoglobulin E level of children and adolescents]. Biull Eksp Biol Med 1989; 107:722-4. [PMID: 2676007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Enzyme immunoassay for determination of total immunoglobulin E in children and adolescents based on combination of two monoclonal antibodies with high affinity and specificity to different epitopes of IgE molecule has been developed. Monoclonal antibodies IgE/11-4 are used for sensitization of a solid phase (96-well plate), mcAB IgE/11-1 conjugated with horseradish peroxidase are used as a developing reagent. The following analytical characteristics of a test-system are established: range of assay--1-100 IU/ml sensitivity--1 IU/ml; time of analysis--1.5 hour, sample volume in duplicates--30 microliters. Immunoassay is simple, reliable and can be used in the field of pediatrics and allergology.
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Shamborant OG, Kolosov MI, Vasilov RG, Lipkin VM, Ovchinnikov IA. [Preparation and characteristics of monoclonal antibodies against GTP-binding protein from the bovine retina]. Bioorg Khim 1986; 12:309-15. [PMID: 2421734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Five monoclonal antibodies against the native GTP-binding protein (transducin) from bovine retina have been prepared. By immunoblotting and immunoenzymatic analysis of the isolated alpha- and gamma-subunits of transducin and the beta gamma-subunit complex it was determined that two monoclonal antibodies A3G7 and A3C10 recognize linear antigenic determinants on the alpha-subunit, two other, A3E4 and 3B3, bound specifically to the gamma-subunit, and monoclonal antibodies 1C3 interact only with native transducin. Both antibodies against the alpha-subunit inhibited transducin GTPase activity, whereas antibodies A3E4, 3B3 and 1C3 did not affect it.
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Iurovskiĭ VV, Bovin NV, Safonova NG, Vasilov RG, Khorlin AI. [Artificial peptide and carbohydrate antigens. Immobilization of haptens and adjuvant (MDP) on polyacrylamide]. Bioorg Khim 1986; 12:100-5. [PMID: 2418842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
To study the influence of the polyacrylamide carrier on immunogenic properties of the peptide and oligosaccharide haptens, we have prepared artificial antigens by conjugation of a synthetic hexapeptide (homologous to the fragment 95-100 of the murine H-2Db antigen heavy chain) or of an oligosaccharide (antigenic determinant of human blood groops, Lea) with polyacrylamide. In some cases the conjugates containing also a synthetic glycopeptide adjuvant, N-acetylmuramoyl-L-alanyl-D-isoglutamine (MDP), were used. Antisera against haptens were obtained by immunization of BALB/c mice with corresponding conjugates. By the enzyme-linked immunosorbent assay it was shown that these antisera had a high binding titer (up to 10 000) to corresponding hapten, and MDP immobilized on the same carrier as hapten possessed a considerable immunostimulating activity. Thus, usefulness of polyacrylamide for preparation of immunogenic artificial molecules carrying peptide and oligosaccharide haptens was demonstrated.
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Vasilov RG, Hahn A, Mölders H, van Rood JJ, Breuning M, Ploegh HL. Analysis of human class I antigens by two-dimensional gel electrophoresis. I. Polymorphism, evidence for additional (non-HLA-A, B, C) gene products, and identification of variant HLA-A, B antigens. Immunogenetics 1983; 17:333-56. [PMID: 6187677 DOI: 10.1007/bf00372454] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Class I antigens were isolated by immunoprecipitation from cell extracts prepared from mitogenically stimulated and internally radiolabeled peripheral blood lymphocytes (PLBs). The precipitating antibodies used are monomorphic and recognize a determinant on the heavy chain of HLA-A, B, C antigens regardless of their allelic specificities when complexed with beta 2m, or determinants on beta 2m itself. Comparison of class I molecules isolated from 25 different homozygous typing cells (HTC) and analyzed by two-dimensional (2-D) gel electrophoresis allowed the identification of those HLA-A, B locus specificities most common in the European Caucasoid population. Class I antigens isolated from HTC that are HLA identical are biochemically indistinguishable also. Evidence was obtained for the expression of additional class I antigens besides the HLA-A, B, C locus products: for some haplotypes, up to six class I genes may be active in mitogenically activated PBLs.No differences in molecular weight and isoelectric point of the class I heavy chains were observed between the antigens recognized by W6/32, the anti-heavy chain reagent, and anti beta 2m reagents. The nature of the mitogenic stimulus, i.e., pokeweed mitogen or phytohemagglutinin, was irrelevant with respect to the class I antigens isolated by this method. Using the HTCs as reference, a panel of HLA-B27 positive heterozygous cells was analyzed. Two types of HLA-B27 antigens, distinct by CML typing were represented. These two forms differed also in their biochemical properties. In addition, we obtained evidence for the existence of an A2 variant. This finding was likewise confirmed by CML typing.
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