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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shadrin K. V., Yakovleva Yu. A., Kryukova O. V., Makarskaya G. V., Tarskikh S. V., Pyankov V. F., Pakhomova V. G., Gerasimova Yu. V., Yaroslavtsev R. N., Vorobyev S. A., Stolyar S. V.
Заглавие : Influence of arabinogalactan-coated selenium nanoparticles on the formation of free radicals in Ehrlich ascites carcinoma cells
Колич.характеристики :8 с
Место публикации : BioNanoScience. - 2024. - Vol. 14, Is. 1. - P.268-275. - ISSN 21911630 (ISSN), DOI 10.1007/s12668-023-01251-6. - ISSN 21911649 (eISSN)
Примечания : Cited References: 40
Аннотация: The antioxidant properties of selenium nanoparticles coated with arabinogalactan have been studied. The nanoparticles were characterized by transmission electron microscopy and infrared spectroscopy. Arabinogalactan-coated selenium nanoparticles were incubated together with Ehrlich ascitic carcinoma cells and then exposed to microwave radiation. The antioxidant properties of selenium nanoparticles were evaluated using chemiluminescent analysis. The viability of Ehrlich ascitic carcinoma cells under microwave irradiation and incubation with selenium nanoparticles was assessed by flow cytometry. Under conditions of exposure to experimental tumor cells of microwave radiation, the concentration of free radicals in the cells did not change. The effect of arabinogalactan-coated selenium nanoparticles on tumor cells is expressed as an increase in the delay time for the activation of the antioxidant system.
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Вид документа : Статья из журнала
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Автор(ы) : Voronin A. S., Fadeev Y. V., Ivanchenko F. S., Dobrosmyslov S. S., Makeev M. O., Mikhalev P. A., Osipkov A. S., Damaratsky I. A., Ryzhenko D. S., Yurkov G. Y., Simunin M. M., Volochaev M. N., Tambasov I. A., Nedelin S. V., Zolotovsky N. A., Bainov D. D., Khartov S. V.
Заглавие : Original concept of cracked template with controlled peeling of the cells perimeter for high performance transparent EMI shielding films
Место публикации : Surf. Interfaces. - 2023. - Vol. 38. - Ст.102793. - ISSN 24680230 (eISSN), DOI 10.1016/j.surfin.2023.102793
Примечания : Cited References: 73. - The development of the processes of synthesis of a cracked template and conceptualization and optimization parameters peeling cells perimeter of the cracked template for the requirements of the final products were carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation within the framework of state task No. 0287–2021–0026. The development of the processes of the formation of metal films and the study of the structural, optical, electrical and shielding properties of the samples were carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation within the framework of state assignment No. FSFN-2022–0007. The physicochemical analysis of materials was carried out on equipment from the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS». We would like to thank Anastasia Tamarovskaya for the macro photo of thick Ag mesh samples.
Аннотация: The problem of sputtering of thick metal films on micro and nanotemplates is important for obtaining mesh transparent conductors with excellent optoelectric characteristics. In this work, we demonstrate for the first time the possibility of controlling the degree of peeling of the cell perimeter from the substrate for a cracked template based on egg white by alternating the operations of moistening the template with saturated water vapor and shock drying with hot air. Local peeling of the cracked template cells perimeter makes it possible to increase the thickness of the metal sputtered on the cracked template by more than 1 µm, which is not achievable for other lithographic approaches. Our technique was used to obtain thick Ag meshes with a low sheet resistance of no more than 1.59 Ω/sq and a transparency of about 89.1%. The thick Ag meshes show a shielding efficiency (SE) of 49 dB or 99.998% of the incident power of an electromagnetic wave at a frequency of 1 GHz. In a sandwich geometry, thick Ag meshes, which simulates a real shielding window, the shielding efficiency (SE) reaches 71 dB with a transparency of more than 80%.
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Вид документа : Статья из журнала
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Автор(ы) : Ivanova O. S., Edelman I. S., Lin, Chun-Rong, Svetlitsky E. S., Sokolov A. Е., Lukyanenko, Kirill A., Sukhachev A. L., Shestakov N. P., Chen, Ying-Zhen, Spivakov, Aleksandr A.
Заглавие : Core–shell Fe3O4@C nanoparticles for the organic dye adsorption and targeted magneto-mechanical destruction of Ehrlich ascites carcinoma cells
Место публикации : Materials. - 2023. - Vol. 16, Is. 1. - Ст.23. - ISSN 19961944 (eISSN), DOI 10.3390/ma16010023
Примечания : Cited References: 65. - This research was funded partly by the Ministry of Science and Higher Education of the Russian Federation, project FWES-2021-0035. C.-R.L., Y.-Z.C. and A.A.S. thank the National Science and Technology Council of Taiwan for the financial support, Grants NSTC № 108-2923-M-153-001-MY3 and № 110-2112-M-153-005-. Magnetic investigations were carried out in the Center for Collective Use of the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS”
Аннотация: The morphology, structure, and magnetic properties of Fe3O4 and Fe3O4@C nanoparticles, as well their effectiveness for organic dye adsorption and targeted destruction of carcinoma cells, were studied. The nanoparticles exhibited a high magnetic saturation value (79.4 and 63.8 emu/g, correspondingly) to facilitate magnetic separation. It has been shown that surface properties play a key role in the adsorption process. Both types of organic dyes—cationic (Rhodomine C) and anionic (Congo Red and Eosine)—were well adsorbed by the Fe3O4 nanoparticles’ surface, and the adsorption process was described by the polymolecular adsorption model with a maximum adsorption capacity of 58, 22, and 14 mg/g for Congo Red, Eosine, and Rhodomine C, correspondingly. In this case, the kinetic data were described well by the pseudo-first-order model. Carbon-coated particles selectively adsorbed only cationic dyes, and the adsorption process for Methylene Blue was described by the Freundlich model, with a maximum adsorption capacity of 14 mg/g. For the case of Rhodomine C, the adsorption isotherm has a polymolecular character with a maximum adsorption capacity of 34 mg/g. To realize the targeted destruction of the carcinoma cells, the Fe3O4@C nanoparticles were functionalized with aptamers, and an experiment on the Ehrlich ascetic carcinoma cells’ destruction was carried out successively using a low-frequency alternating magnetic field. The number of cells destroyed as a result of their interaction with Fe3O4@C nanoparticles in an alternating magnetic field was 27%, compared with the number of naturally dead control cells of 6%.
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Вид документа : Статья из журнала
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Автор(ы) : Kichkailo A. S., Narodov A. A., Komarova M. A., Zamay T. N., Zamay G. S., Kolovskaya O. S., Erakhtin E. E., Glazyrin Y. E., Veprintsev D. V., Moryachkov R. V., Zabluda V. N., Shchugoreva I., Artyushenko P., Mironov V. A., Morozov D. I., Gorbushin A. V., Khorzhevskii V. A., Koshmanova A. A., Nikolaeva E. D., Grinev I. P., Voronkovskii I. I., Grek D. S., Belugin K. V., Volzhentsev A. A., Badmaev O. N., Luzan N., Lukyanenko K. A., Peters G., Lapin I. N., Kirichenko A. K., Konarev P. V., Morozov E. V, Mironov G. G., Gargaun A., Muharemagic D., Zamay S. S., Kochkina E. V., Dymova M. A., Smolyarova T. E., Sokolov A. Е., Modestov A. A., Tokarev N. A., Shepelevich N., Ozerskaya A. V., Chanchikova N. G., Krat A. V., Zukov R. A., Bakhtina V. I., Shnyakin P. G., Shesternya P. A., Svetlichnyi V. A., Petrova M. M., Artyukhov I. P., Tomilin F. N., Berezovski, Maxim V.
Заглавие : Development of DNA aptamers for visualization of glial brain tumors and detection of circulating tumor cells
Место публикации : Mol. Ther. - Nucleic Acids. - 2023. - Vol. 32. - P.267-288. - ISSN 21622531 (eISSN), DOI 10.1016/j.omtn.2023.03.015
Примечания : Cited References: 69. - The authors are grateful to all the patients and hospital staff participating in this research. We acknowledge the assistance of the AptamerLab LCC (www.aptamerlab.com) and personally Mr. Vasily Mezko for the aptamer 3D structure optimization and financial and technical support. The authors thank Mr. Alexey Kichkailo, Dr. Arkady B. Kogan, and Dr. Rinat G. Galeev for their general support. Mrs. Valentina L. Grigoreva, and Irina V. Gildebrand for the help with histological staining. Technical and instrumental support was provided by the Multiple-Access Center at Tomsk State University; the Krasnoyarsk Inter-District Ambulance Hospital, named after N.S. Karpovich; John L. Holmes Mass Spectrometry Facility at the University of Ottawa; Federal Siberian Research Clinical Centre under the Federal Medical Biological Agency; Shared Core Facilities of Molecular and Cell Technologies at Krasnoyarsk State Medical University and Krasnoyarsk Regional Centre for Collective Use at the Federal Research Centre “KSC SB RAS”. The confocal fluorescence microscopy research was carried out with the equipment of the Tomsk Regional Core Shared Research Facilities Center of the National Research Tomsk State University. The Center was supported by the Ministry of Science and Higher Education of the Russian Federation, grant no. 075-15-2021-693 (no. 13.RFC.21.0012). Acute toxicity studies were performed in a laboratory certified for preclinical studies, Laboratory of Biological Testing, Institute of Bioorganic Chemistry named after academics M.M. Shemyakin and Y.A. Ovchinnikov Russian Academy of Sciences. The authors are grateful to the Joint Super Computer Center of the Russian Academy of Sciences for providing supercomputers for computer simulations. Development of the glioma tumor model in immunosuppressed mice was supported by the Russian Science Foundation grant No. 22-64-00041 (M.A.D.), https://rscf.ru/en/project/22-64-00041/. Synthesis of 11C-aptamer and PET/CT visualization was funded by the Federal Medical Biological Agency; project 122041800132-2 (A.V.O.). Aptamer selection and their clinical applications were funded by the Ministry of Healthcare of the Russian Federation; project АААА-Б19-219090690032-5 (T.N.Z.). The Ministry of Science and Higher Education of the Russian Federation project FWES-2022-0005 (A.S.K.) supported aptamer characterization, molecular modelling, and in vivo experiments. Mass spectrometry analyses, DNA sequencing, and synthesis were supported by NSERC Discovery Grant (M.V.B.). We acknowledge the European Synchrotron Radiation Facility for SAXS experiments and thank Dr. Bart Van Laer for assistance in using a beamline BM29. SAXS measurements were supported by RFBR № 18-32-00478 for young scientists (R.V.M.). The synchrotron SEC-SAXS data for Gli-55 aptamer were also collected at beamline P12 operated by EMBL Hamburg at the PETRA III storage ring (DESY, Hamburg, Germany)
Аннотация: Here, we present DNA aptamers capable of specific binding to glial tumor cells in vitro, ex vivo, and in vivo for visualization diagnostics of central nervous system tumors. We selected the aptamers binding specifically to the postoperative human glial primary tumors and not to the healthy brain cells and meningioma, using a modified process of systematic evolution of ligands by exponential enrichment to cells; sequenced and analyzed ssDNA pools using bioinformatic tools and identified the best aptamers by their binding abilities; determined three-dimensional structures of lead aptamers (Gli-55 and Gli-233) with small-angle X-ray scattering and molecular modeling; isolated and identified molecular target proteins of the aptamers by mass spectrometry; the potential binding sites of Gli-233 to the target protein and the role of post-translational modifications were verified by molecular dynamics simulations. The anti-glioma aptamers Gli-233 and Gli-55 were used to detect circulating tumor cells in liquid biopsies. These aptamers were used for in situ, ex vivo tissue staining, histopathological analyses, and fluorescence-guided tumor and PET/CT tumor visualization in mice with xenotransplanted human astrocytoma. The aptamers did not show in vivo toxicity in the preclinical animal study. This study demonstrates the potential applications of aptamers for precise diagnostics and fluorescence-guided surgery of brain tumors.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kolovskaya, Olga S., Zyuzyukina, Alena V., Dassie, Justin P., Zamay, Galina S., Zamay, Tatiana N., Boyakova, Nina V., Khorzhevskii, Vladimir A., Kirichenko, Daria A., Lapin I. N., Shchugoreva, Irina A., Artyushenko, Polina V., Tomilin F. N., Veprintsev, Dmitry V., Glazyrin, Yury E., Minic, Zoran, Bozhenko, Vladimir K., Kudinova, Elena A., Kiseleva, Yana Y., Krat, Alexey V., Slepov, Eugene V., Bukatin, Anton S., Zukov, Ruslan A., Shesternya, Pavel A., Berezovski, Maxim V., Giangrande, Paloma H., Kichkailo, Anna S.
Заглавие : Monitoring of breast cancer progression via aptamer-based detection of circulating tumor cells in clinical blood samples
Место публикации : Front. Mol. Biosci. - 2023. - Vol. 10. - Ст.1184285. - ISSN 2296889X (eISSN), DOI 10.3389/fmolb.2023.1184285
Примечания : Cited References: 37. - CTCs isolation method development and clinical sample analyses were supported by the Ministry of Healthcare of Russian Federation project REYC-2023-0012. The Ministry of Science and Higher Education of the Russian Federation project FWES-2022-0005 supported aptamer characterization, molecular modeling. MDA-231/LUC cells were from R. Domann (Jenkin et al. Breast Cancer Research, 2005). Technical and instrumental support was provided by the Shared Core Facilities of Molecular and Cell Technologies at Krasnoyarsk State Medical University and Krasnoyarsk Regional Centre for Collective Use at the Federal Research Centre “KSC SB RAS.” The confocal fluorescence microscopy research was carried out with the equipment of the Tomsk Regional Core Shared Research Facilities Center of the National Research Tomsk State University. The Center was supported by the Ministry of Science and Higher Education of the Russian Federation, grant no. 075-15-2021-693 (No. 13.RFC.21.0012)The authors are grateful to all the patients and hospital staff participating in this research. We acknowledge the assistance of the AptamerLab LCC (www.aptamerlab.com) and personally Vasily Mezko for the technical support. The authors thank Valentina L. Grigoreva, and Irina V. Gildebrand for the help with СTC staining
Аннотация: Introduction: Breast cancer (BC) diagnostics lack noninvasive methods and procedures for screening and monitoring disease dynamics. Admitted CellSearch® is used for fluid biopsy and capture of circulating tumor cells of only epithelial origin. Here we describe an RNA aptamer (MDA231) for detecting BC cells in clinical samples, including blood. The MDA231 aptamer was originally selected against triple-negative breast cancer cell line MDA-MB-231 using cell-SELEX. Methods: The aptamer structure in solution was predicted using mFold program and molecular dynamic simulations. The affinity and specificity of the evolved aptamers were evaluated by flow cytometry and laser scanning microscopy on clinical tissues from breast cancer patients. CTCs were isolated form the patients’ blood using the developed method of aptamer-based magnetic separation. Breast cancer origin of CTCs was confirmed by cytological, RT-qPCR and Immunocytochemical analyses. Results: MDA231 can specifically recognize breast cancer cells in surgically resected tissues from patients with different molecular subtypes: triple-negative, Luminal A, and Luminal B, but not in benign tumors, lung cancer, glial tumor and healthy epithelial from lungs and breast. This RNA aptamer can identify cancer cells in complex cellular environments, including tumor biopsies (e.g., tumor tissues vs. margins) and clinical blood samples (e.g., circulating tumor cells). Breast cancer origin of the aptamer-based magnetically separated CTCs has been proved by immunocytochemistry and mammaglobin mRNA expression. Discussion: We suggest a simple, minimally-invasive breast cancer diagnostic method based on non-epithelial MDA231 aptamer-specific magnetic isolation of circulating tumor cells. Isolated cells are intact and can be utilized for molecular diagnostics purposes.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Мензянова Н. Г., Пятина С. А., Шабанов, Александр Васильевич, Шишацкая Е. И.
Заглавие : Дозозависимые эффекты наноразмерных форм гуминовых кислот в гидропонной культуре Triticum aestivum: индукция окислительного стресса и увеличение численности пограничных клеток
Место публикации : Журн. СФУ. Биол. - 2023. - Т. 16, № 1. - С. 64-86. - ISSN 19971389 (ISSN); J. Sib. Fed. Univ. Biol. - ISSN 23135530 (eISSN)
Примечания : Библиогр.: 63
Аннотация: В гидропонной культуре Triticum aestivum L. изучали биологическую активность гуминовых кислот в форме наночастиц размером 6,5 нм и 68 нм. Гуминовые наночастицы (мелкие и крупные) в изученных концентрациях не ингибировали рост корня и не вызывали деструктивных изменений корневого апекса 2-дневных проростков. На средах с гуминовыми наночастицами в корнях проростков наблюдалось дозозависимое увеличение содержания карбонилированных белков, малонового альдегида и пролина – маркеров индуцированного окислительного стресса. Для мелких наночастиц основным продуктом свободнорадикального окисления был малоновый диальдегид, для крупных – карбонилированные белки. Индуцированный гуминовыми наночастицами окислительный стресс сопровождался дозозависимым увеличением численности свободных пограничных клеток и размеров гелевого чехла в корневом апексе 2-дневных проростков. Для мелких наночастиц (6,5 нм) эти изменения были выражены в значительно большей степени, чем для крупных наночастиц (68 нм). Полученные результаты позволяют рассматривать гуминовые наночастицы в качестве адаптогенов: способствуя увеличению численности популяции пограничных клеток и системы гелевого чехла (как продукта экскреторной активности пограничных клеток), наночастицы увеличивают устойчивость корневого апекса к воздействию неблагоприятных биотических и абиотических факторов.The biological activity of humic acids in the form of nanoparticles with a size of 6.5 nm and 68 nm was studied in a hydroponic culture of Triticum aestivum L. Both smaller and larger humic nanoparticles at the studied concentrations neither inhibited root growth nor caused destructive changes in the root apexes of 2-day-old seedlings. A dose-dependent increase in the contents of markers of induced oxidative stress such as carbonylated proteins, malonaldehyde, and proline was observed in the roots of seedlings on media with humic nanoparticles. Malondialdehyde was the main product of free radical oxidation for smaller nanoparticles and carbonylated proteins – for larger ones. Oxidative stress induced by humic nanoparticles was accompanied by a dose-dependent increase in the number of free border cells and the size of the mucilaginous sheaths on the root apexes of 2-day-old seedlings. For smaller (6.5 nm) nanoparticles, these changes were much more pronounced than for larger (68 nm) nanoparticles. The results obtained allow us to consider humic nanoparticles as adaptogens: contributing to an increase in the population of border cells and the mucilaginous sheath system (as a product of the excretory activity of border cells), nanoparticles enhance the resistance of the root apex to the effects of unfavorable biotic and abiotic factors.
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Вид документа : Статья из журнала
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Автор(ы) : Koblischka M. R., Koblischka-Veneva A., Nouailhetas Q., Hajiri G., Berger K., Douine B., Gokhfeld D. M.
Заглавие : Microstructural parameters for modelling of superconducting foams
Место публикации : Materials. - 2022. - Vol. 15, Is. 6. - Ст.2303. - ISSN 19961944 (ISSN), DOI 10.3390/ma15062303
Примечания : Cited References: 62
Аннотация: Superconducting YBa2Cu3Oy (YBCO) foams were prepared using commercial open-cell, polyurethane foams as starting material to form ceramic Y2 BaCuO5 foams which are then converted into superconducting YBCO by using the infiltration growth process. For modelling the supercon-ducting and mechanical properties of the foam samples, a Kelvin-type cell may be employed as a first approach as reported in the literature for pure polyurethane foams. The results of a first modelling attempt in this direction are presented concerning an estimation of the possible trapped fields (TFs) and are compared to experimental results at 77 K. This simple modelling revealed already useful information concerning the best suited foam structure to realize large TF values, but it also became obvious that for various other parameters like magnetostriction, mechanical strength, percolative current flow and the details of the TF distribution, a refined model of a superconducting foam sample incorporating the real sample structure must be considered. Thus, a proper description of the specific microstructure of the superconducting YBCO foams is required. To obtain a set of reliable data, YBCO foam samples were investigated using optical microscopy, scanning electron microscopy and electron backscatter diffraction (EBSD). A variety of parameters including the size and shape of the cells and windows, the length and shape of the foam struts or ligaments and the respective intersection angles were determined to better describe the real foam structure. The investigation of the foam microstructures revealed not only the differences to the original polymer foams used as base material, but also provided further insights to the infiltration growth process via the large amount of internal surface in a foam sample.
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Вид документа : Статья из журнала
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Автор(ы) : Kostyukov A. S., Isaev I. L., Ershov A. E., Gerasimov V. S., Polyutov S. P., Karpov S. V.
Заглавие : Part II. Nanobubbles around plasmonic nanoparticles in terms of modern simulation modeling: what makes them kill the malignant cells?
Коллективы : Ministry of Science and High Education of Russian Federation [FSRZ-2020-0008]; RFBRRussian Foundation for Basic Research (RFBR); Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science [20-42-240003]
Место публикации : J. Phys. D. - 2022. - Vol. 55, Is. 17. - Ст.175402. - ISSN 0022-3727, DOI 10.1088/1361-6463/ac4c1f. - ISSN 1361-6463(eISSN)
Примечания : Cited References: 49. - The research was supported by the Ministry of Science and High Education of Russian Federation (Project No. FSRZ-2020-0008), and was funded by RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, Project No. 20-42-240003
Предметные рубрики: STRESS WAVES
LASER
MEMBRANE
DAMAGE
DEATH
LYSIS
Аннотация: We have established numerically the physical pattern and conditions for formation of nanosized bubbles in aqueous medium around biocompatible plasmonic nanoparticles (NPs) selectively bound to the membrane of the malignant cells by means of DNA-aptamers under the action of picosecond laser radiation. The results obtained are based on the finite volume method and hydrodynamic models underlying the ANSYS Fluent package with extended capabilities. We have found the main features and previously unknown dominant factors of the damage effect on the cell membrane at the moment of the bubble nucleation around the plasmonic NPs of different types taking into account the influence of the closely located membrane. Information on the kinetics of spatial distribution of pressure, temperature and the relative proportion of vapor in the 'nanoparticle-membrane-medium' system have been obtained. The attention is drawn to the advantages of using biocompatible, perfectly absorbing core–shell plasmonic NPs for anti-tumor therapy characterized by an increased mechanical effect on malignant cell membranes at lower laser radiation intensity and the spectral position of their plasmon resonance (λ = 700 nm) in the hemoglobin transparency range. This ensures penetration of laser radiation deep into tissues. The paper is provided with an extensive review of key publications and the state-of-art in this area.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sokolov A. Е., Ivanova O. S., Svetlitsky E. S., Lukyanenko K. A., Shabanov A. V., Shestakov N. P., Chen Y. -Z., Tseng Y.-T., Lin C.-R.
Заглавие : Core-shell Fe3O4@C nanoparticles for magneto-mechanical destroy of Ehrlich ascites carcinoma cells
Коллективы : Asian School-Conference on Physics and Technology of Nanostructured Materials, Азиатская школа-конференция по физике и технологии наноструктурированных материалов
Место публикации : The Sixth Asian school-conference on physics and technology of nanostructured materials: Proceedings. - VLadivostok, 2022. - Ст.IV.o.08. - P.189-190. - ISBN 987-5-8044-1716-2
Примечания : Cited References: 2
Предметные рубрики:
Аннотация: The core-shell magnetic nanoparticles, Fe3O4@C, were synthesized and surface aptamer-functionalized to use them as destroyers of living cancer Ehrlich's ascitic carcinoma cells. The morphology and features of the structural and magnetic properties of the obtained hybrid nanoparticles are studied.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bikbaev R. G., Vetrov S. Y., Timofeev I. V., Shabanov V. F.
Заглавие : Nanoparticle shape optimization for Tamm-plasmon-polariton-based organic solar cells in the visible spectral range
Место публикации : Photonics. - 2022. - Vol. 9, Is. 11. - Ст.786. - ISSN 23046732 (ISSN), DOI 10.3390/photonics9110786
Примечания : Cited References: 28. - The reported study was funded by a grant of the President of the Russian Federation №MK-46.2021.1.2
Аннотация: The effect of the shape of the nanoparticles and the polarization of incident light on the surface current density and the efficiency of an organic solar cell based on the Tamm plasmon polariton is investigated. In the cases of both elongated and flattened nanoparticles, it is shown that the efficiency of such a solar cell is increased when the electric field vector is parallel to the largest axis of the spheroid.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bikbaev R. G., Pykhtin D. A., Vetrov S. Ya., Timofeev I. V., Shabanov V. F.
Заглавие : Nanostructured photosensitive layer for Tamm-plasmon-polariton-based organic solar cells
Место публикации : Appl. Opt. - 2022. - Vol. 61, Is. 17. - P.5049-5054. - ISSN 1559128X (ISSN), DOI 10.1364/AO.456413
Примечания : Cited References: 47. - Council on Grants of the President of the Russian Federation (MK-46.2021.1.2)
Аннотация: The influence of the volume fraction of plasmonic nanoparticles on the efficiency of the Tamm-plasmon-polariton-based organic solar cell is investigated in the framework of temporal coupled mode theory and confirmed by the transfer matrix method. It is shown that, unlike a conventional plasmonic solar cell, in which the efficiency is directly proportional to the volume fraction of nanoparticles in the photosensitive layer, the efficiency of the proposed solar cell reaches the highest value at low volume fractions. This effect is explained by the fact that at these volume fractions, the critical coupling condition of the incident field with the Tamm plasmon polariton is fulfilled. Thus, for the incoming radiation range of 350 to 500 nm, a maximal cell efficiency of 28% is achieved with a volume fraction of nanoparticles equal to 10%. Additionally, the optical properties of the photosensitive layer are compared for the cases of determining its complex refractive index by effective medium theory and the S-parameter retrieval method. A good agreement between the results is demonstrated, which encourages the use of the effective medium theory for preliminary calculations.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bikbaev R. G., Vetrov S. Ya., Timofeev I. V., Shabanov V. F.
Заглавие : Photosensitivity and reflectivity of the active layer in a Tamm-plasmon-polariton-based organic solar cell
Место публикации : Appl. Opt. - 2021. - Vol. 60, Is. 12. - P.3338-3343. - ISSN 1559128X (ISSN), DOI 10.1364/AO.421374
Примечания : Cited References: 49. - The reported study was funded by the grant of the President of Russian Federation No. MK-46.2021.1.2 and by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 19-42-240004
Аннотация: We report on a model of an organic solar cell in which a photosensitive layer doped with plasmon nanoparticles acts as not only an absorbing element but also a mirror involved in the formation of the Tamm plasmon polariton. It is shown that such solar cells can be fabricated without metal contacts, thus avoiding undesired losses in the system. Methods for an additional increase in the integral absorption by applying metal or dielectric mirrors to the lower boundary of the photonic crystal are proposed. It has been found that the integral absorption in the active layer can be increased by15%compared to classical optimized planar solar cells.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Balaev D. A., Semenov S. V., Varnakov S. N., Radionov E. Y., Tretyakov Al. Y.
Заглавие : High-temperature evolution of the magnetization of aluminum reduction cell steel
Место публикации : J. Sib. Fed. Univ. Math. Phys. - 2021. - Vol. 14, Is. 1. - P.5-11. - ISSN 19971397 (ISSN), DOI 10.17516/1997-1397-2021-14-1-5-11; Журн. СФУ. Матем. и физика
Примечания : Cited References: 17. - We are grateful to A. D. Balaev and S. V.Komogortsev for fruitful discussions. The magnetic measurements were performed on the facility at the Krasnoyarsk Territorial Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences. This study was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, and the United Company RUSAL, project no. 20-48-242905 "Determining the Effect of Magnetization of Ferromagnets on the MHD Parameters of the Reduction Cell"
Аннотация: The magnetic properties of steel of a structural element of an aluminum reduction cell have been investigated in the temperature range of 300–900 K. The analysis of the temperature dependence of the saturation magnetization Ms(T) showed (i) the applicability of the Bloch’s 3/2 law and a reason- able value of the Bloch’s constant for steel and (ii) the quadratic dependence Ms(T)~(1 - T2) in the temperature range of 380–700 K.В работе исследованы магнитные свойства стали конструктивного элемента алюминиевого электролизера в области температур 300–900 K. Проведенный анализ температурной зависимости намагниченности насыщения MS(T) показал: (i) применимость "закона 3/2" Блоха, а также разумное значение константы Блоха и константы обменного взаимодействия для стали; (ii) квадратичную зависимость MS(T)∼(1 - T2) в температурном диапазоне 380–700 K.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar S. V., Kryukova O. V., Yaroslavtsev R. N., Bayukov O. A., Knyazev Yu. V., Gerasimova Yu. V., Pyankov V. F., Latyshev N. V., Shestakov N. P.
Заглавие : Influence of magnetic nanoparticles on cells of Ehrlich ascites carcinoma
Место публикации : AIP Adv. - 2021. - Vol. 11, Is. 1. - Ст.015019. - ISSN 21583226 (ISSN), DOI 10.1063/9.0000165
Примечания : Cited References: 22. - The electron microscopy and magnetic resonance study was carried out on the equipment of the Krasnoyarsk Territorial Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences. This work was supported by the Council of the President of the Russian Federation for State Support of Young Scientists and Leading Scientific Schools (project no. MK-1263.2020.3). The research was funded by RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, project number 20-42-242902
Аннотация: The effect of magnetic nanoparticles coated with arabinogalactan on the viability of Ehrlich ascites carcinoma (EAC) cells was studied. The nanoparticles were studied by transmission electron microscopy, Mossbauer spectroscopy, IR spectroscopy, and ferromagnetic resonance. A correlation between the proportion of dead EAC cells in suspension and the intensity of the EPR signal of dinitrosyl iron complexes was found. This result may be due to the presence of NO molecules.
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15.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Бикбаев, Рашид Гельмединович, Ветров, Степан Яковлевич, Тимофеев, Иван Владимирович, Шабанов, Василий Филиппович
Заглавие : Таммовские плазмон-поляритоны для захвата света в органических солнечных элементах
Коллективы : Международная конференция по фотонике и информационной оптике, Российская академия наук, Национальный исследовательский ядерный университет "МИФИ", Государственная корпорация по атомной энергии "РОСАТОМ"
Место публикации : Международная конференция по фотонике и информационной оптике (10 ; 2021 ; янв. ; ; Москва). X Международная конференция по фотонике и информационной оптике: сборник научных трудов. - 2021. - С. 259-260. - ISBN 978-5-7262-2733-7
Примечания : Библиогр.: 4
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tyumentseva A. V., Gorbenko A. S., Yaroslavtsev R. N., Stolyar S. V., Gerasimova Yu. V., Komogortsev S. V., Bayukov O. A., Knyazev Yu. V., Volochaev M. N., Olkhovskiy I. A., Iskhakov R. S.
Заглавие : Iron oxide nanoparticles for isolating DNA from blood cells
Место публикации : Bull. Russ. Acad. Sci. Phys. - 2021. - Vol. 85, Is. 9. - P.965-969. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873821090185
Примечания : Cited References: 13. - This work was supported by the Russian Foundation for Basic Research; the Government of Krasnoyarsk Territory; the Krasnoyarsk Regional Fund for the Support of Scientific and Scientific and Technical Activities, project no. 20-42-242902; and the RF Presidential Council of Grants for the State Support of Young Russian Scientists (Candidates of Science), project no. MK-1263.2020.3
Аннотация: Magnetic iron oxide nanoparticles for separating DNA from blood cells are synthesized. Magnetic nanoparticles with a silicate coating are obtained, and their physical and chemical properties are studied. The possibility of using the nanocomposites to isolate DNA from leukocytes for hematological studies is confirmed experimentally.
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17.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Moryachkov R. V., Morozov D., Mironov V., Shchugoreva I., Artyushenko P. V., Zamay G. S., Molodenskiy D. S., Zabluda V. N., Kichkailo A.S., Sokolov A. Е.
Заглавие : The role of small-angle X-ray scattering and molecular simulations in 3D structure elucidation of a DNA aptamer-cancer cells magnetic separation agent
Коллективы : International Baltic Conference on Magnetism: focus on nanobiomedicine and smart materials, Балтийский федеральный университет им. И. Канта
Место публикации : 4th International Baltic Conference on Magnetism (IBCM 2021): Book of abstracts. - 2021. - P.168
Примечания : Cited References: 2. - The reported study was funded by RFBR, project number 19-32-90266
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belousov A. L., Patrusheva T. N., Karacharov A. A., Ivanenko A. A., Kirik S. D., Khol'kin A. I.
Заглавие : Amorphous and Crystalline Nickel Oxide Films Obtained by the Extraction-Pyrolysis Method for Electrochromic Cells
Коллективы : program "Research and Development for the Priority Areas of the Russian Science-and-Technology Sector for 2014-2020" [075-15-2019-1843]; [RFMEFI60719X0307]
Место публикации : Theor. Found. Chem. Eng. - 2020. - Vol. 54, Is. 4. - P.699-705. - ISSN 0040-5795, DOI 10.1134/S0040579520040041. - ISSN 1608-3431(eISSN)
Примечания : Cited References: 8. - This work was performed as part of the program "Research and Development for the Priority Areas of the Russian Science-and-Technology Sector for 2014-2020"; Grant Agreement no. 075-15-2019-1843; the Project Unique Identifier RFMEFI60719X0307
Предметные рубрики: NIO THIN-FILMS
Аннотация: This paper reports studies of thin films of nickel oxide obtained by the extraction–pyrolysis method on glass and quartz substrates at temperatures of 380–600°C. The films have been characterized by atomic force microscopy and X-ray diffraction. It is shown that amorphous and crystalline nickel oxide films are formed on the glass. The grain size depends on the annealing temperature, while increased annealing temperatures lead to recrystallization and a decrease in the grain size in NiO films from 130 to 35 nm.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bondarenko L. S., Kovel E. S., Kydralieva K. A., Dzhardimalieva G. I., Illes E., Tombacz E., Kicheeva A. G., Kudryasheva N. S.
Заглавие : Effects of modified magnetite nanoparticles on bacterial cells and enzyme reactions
Место публикации : Nanomaterials. - 2020. - Vol. 10, Is. 8. - Ст.1499. - P.1-20. - ISSN 20794991 (ISSN), DOI 10.3390/nano10081499
Примечания : Cited References: 83. - This research was funded by the Russian Foundation for Basic Research (#19-315-50048, #19-33-90149, and #18-29-19003)
Аннотация: Current paper presents biological effects of magnetite nanoparticles (MNPs). Analyzing effects of MNP’ characteristics (zeta-potential and hydrodynamic diameters) on bacteria and their enzyme reactions was the main focus. Photobacterium phosphoreum and bacterial enzymatic reactions were chosen as bioassays. Three types of MNPs were under study: bare Fe3O4, Fe3O4 modified with 3-aminopropyltriethoxysilane (Fe3O4/APTES), and humic acids (Fe3O4/HA). Effects of the MNPs were studied at a low concentration range (< 2 mg/L) and attributed to availability and oxidative activity of Fe3+, high negative surface charge, and low hydrodynamic diameter of Fe3O4/HA, as well as higher Fe3+ content in suspensions of Fe3O4/HA. Low-concentration suspensions of bare Fe3O4 provided inhibitory effects in both bacterial and enzymatic bioassays, whereas the MNPs with modified surface (Fe3O4/APTES and Fe3O4/HA) did not affect the enzymatic activity. Under oxidative stress (i.e., in the solutions of model oxidizer, 1,4-benzoquinone), MNPs did not reveal antioxidant activity, moreover, Fe3O4/HA demonstrated additional inhibitory activity. The study contributes to the deeper understanding of a role of humic substances and silica in biogeochemical cycling of iron. Bioluminescence assays, cellular and enzymatic, can serve as convenient tools to evaluate bioavailability of Fe3+ in natural dispersions of iron-containing nanoparticles, e.g., magnetite, ferrihydrite, etc.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Blyakhman F. A., Makarova E. B., Shabadrov P. A., Fadeyev F. A., Shklyar T. F., Safronov A. P., Komogortsev S. V., Kurlyandskaya, G., V
Заглавие : Magnetic nanoparticles as a strong contributor to the biocompatibility of ferrogels
Коллективы : Russian Science FoundationRussian Science Foundation (RSF) [18-19-00090]
Место публикации : Phys. Metals Metallogr. - 2020. - Vol. 121, Is. 4. - P.299-304. - ISSN 0031-918X, DOI 10.1134/S0031918X2004002X. - ISSN 1555-6190(eISSN)
Примечания : Cited References: 17. - This study was supported by the Russian Science Foundation, grant no. 18-19-00090.
Предметные рубрики: STIFFNESS
Аннотация: Biomedical engineering is the most promising field for the application of ferrogels as scaffolds for cell culturing in regenerative medicine, targeted drug delivery, and biosensorics. This study is focused on the contribution of ferric-oxide magnetic nanoparticles (MNPs) to the biocompatibility of ferrogels with human dermal fibroblasts. The results of experiments with polyacrylamide gels filled with MNPs are presented. These experiments demonstrate that, regardless of the mechanical and electrical characteristics of ferrogels, MNPs have a significant effect on the biological activity of cells.
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