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Safronova TV, Selezneva II, Tikhonova SA, Kiselev AS, Davydova GA, Shatalova TB, Larionov DS, Rau JV. Biocompatibility of biphasic α,β-tricalcium phosphate ceramics in vitro. Bioact Mater 2020; 5:423-427. [PMID: 32258831 PMCID: PMC7118277 DOI: 10.1016/j.bioactmat.2020.03.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 03/04/2020] [Accepted: 03/11/2020] [Indexed: 01/08/2023] Open
Abstract
The biocompatibility of biphasic α,β-tricalcium phosphate ceramics, obtained by annealing a compact preform based on β-tricalcium phosphate powder, was studied in vitro. It was found that within 10–30 days the adhesion of primary dental pulp stem cells located on the surface of biphasic α,β-tricalcium phosphate ceramics is suppressed. Decrease of the cell number on the surface of biphasic α,β-tricalcium phosphate ceramics, most likely, can be associated with both the pH level (acidic) as a result of hydrolysis of the more soluble phase of α-tricalcium phosphate and with the nature of surface that changes as a result of the formation and growth of hydroxyapatite crystals. In vitro tests of biphasic α,β-tricalcium phosphate ceramics enriched with 65% of α-Ca3(PO4)2 modification were carried out. Surface morphology of α,β-tricalcium phosphate ceramics gradually changed during in vitro tests for 30 days. Sharp edges of hydroxyapatite plate crystallites formed at the surface of ceramics suppressed the cell activity. Acidification near the surface of ceramics containing biodegradable α-tricalcium phosphate suppressed the cell activity. Acidifying α-tricalcium phosphate is a perspective phase of ceramic composites in combination with alkalinizing phases.
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Affiliation(s)
- T V Safronova
- Lomonosov Moscow State University, Leninskie Gory, 1, Moscow, 119991, Russia
| | - I I Selezneva
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, 142292, Moscow Region, Russia
| | - S A Tikhonova
- Lomonosov Moscow State University, Leninskie Gory, 1, Moscow, 119991, Russia
| | - A S Kiselev
- Lomonosov Moscow State University, Leninskie Gory, 1, Moscow, 119991, Russia
| | - G A Davydova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, 142292, Moscow Region, Russia
| | - T B Shatalova
- Lomonosov Moscow State University, Leninskie Gory, 1, Moscow, 119991, Russia
| | - D S Larionov
- Lomonosov Moscow State University, Leninskie Gory, 1, Moscow, 119991, Russia
| | - J V Rau
- Istituto di Struttura Della Materia, Consiglio Nazionale Delle Ricerche (ISM-CNR), Via Del Fosso Del Cavaliere 100, 00133, Rome, Italy
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Timashev PS, Vorobieva NN, Akovantseva AA, Minaev NV, Piskun YA, Kostjuk SV, Selezneva II, Vasilenko IV, Zakharkina OL, Ignatieva NY, Chailakhyan RK, Lunin VV, Bagratashvili VN. Biocompatibility and Degradation of Porous Matrixes from Lactide and ε-Caprolactone Copolymers Formed in a Supercritical Carbon Dioxide Medium. Russ J Phys Chem B 2018. [DOI: 10.1134/s199079311707017x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Ermakov AM, Chernov AS, Poltavtseva RA, Selezneva II. A study of the impacts of low-intensity light irradiation in the red (λmax = 635 nm) and green (λmax = 520 nm) ranges on the proliferative activity and gene expression profiles of MNNG/hos cells and human fetal fibroblasts. Biophysics (Nagoya-shi) 2017. [DOI: 10.1134/s0006350917010055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Svirshchevskaya EV, Poltavtseva RA, Beletskii IP, Selezneva II, Savilova AM, Sukhikh GT. Interaction of Lymphocytes with Mesenchymal Stem Cells. Bull Exp Biol Med 2016; 161:571-9. [PMID: 27590770 DOI: 10.1007/s10517-016-3463-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 12/03/2015] [Indexed: 12/29/2022]
Abstract
We studied the interaction of neural stem cells and dental pulp-derived mesenchymal stem cells with lymphocytes from autologous and heterologous donors. Flow cytometry analysis with the use of CFSE-labeled lymphocytes demonstrated an increase in the content of proliferating CD8, CD16 and CD56 cells, but not CD4 cells in cultures of HLA-DR-negative mesenchymal stromal cells from the dental pulp co-cultured with lymphocytes. In neural cultures expressing HLA-DR, all subpopulations of T cells and NK cells were activated. No differences between the autologous and heterologous cultures were revealed.
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Affiliation(s)
- E V Svirshchevskaya
- M. M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.
| | - R A Poltavtseva
- V. I. Kulakov Research Center of Obstetrics, Gynecology, and Perinatology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - I P Beletskii
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, Russia
| | - I I Selezneva
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, Russia
| | - A M Savilova
- V. I. Kulakov Research Center of Obstetrics, Gynecology, and Perinatology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - G T Sukhikh
- V. I. Kulakov Research Center of Obstetrics, Gynecology, and Perinatology, Ministry of Health of the Russian Federation, Moscow, Russia
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Svirshchevskaya EV, Poltavtseva RA, Beletskii IP, Selezneva II, Sukhikh GT. Antiproliferative Effects of Mesenchymal Stem Cells and Epithelial Cells on Lymphocytes. Bull Exp Biol Med 2016; 161:518-22. [DOI: 10.1007/s10517-016-3451-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Indexed: 01/02/2023]
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Fadeeva IV, Selezneva II, Davydova GA, Fomin AS, Antonova OS, Filippov YY, Barinov SM. Iron-substituted tricalcium phosphate ceramics. Dokl Chem 2016. [DOI: 10.1134/s0012500816050049] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Zalepugin DY, Zaitzev VV, Tilkunova NA, Chernyshova IV, Selezneva II, Nikonova YA, Vlasov MI. Xenogenic bone matrix treated with supercritical carbon dioxide as a potential osteoplastic material. Russ J Phys Chem B 2016. [DOI: 10.1134/s1990793115070131] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Popov A, Zaichkina SI, Popova NR, Rozanova OM, Romanchenko SP, Ivanova OS, Smirnov AA, Mironova EV, Selezneva II, Ivanov VK. Radioprotective effects of ultra-small citrate-stabilized cerium oxide nanoparticles in vitro and in vivo. RSC Adv 2016. [DOI: 10.1039/c6ra18566e] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Different radioprotective action mechanisms of CeO2 nanoparticles in vitro and in vivo are demonstrated and discussed.
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Affiliation(s)
- A. L. Popov
- Institute of Theoretical and Experimental Biophysics
- Russian Academy of Sciences
- Moscow region
- 142290 Russia
| | - S. I. Zaichkina
- Institute of Theoretical and Experimental Biophysics
- Russian Academy of Sciences
- Moscow region
- 142290 Russia
| | - N. R. Popova
- Institute of Theoretical and Experimental Biophysics
- Russian Academy of Sciences
- Moscow region
- 142290 Russia
| | - O. M. Rozanova
- Institute of Theoretical and Experimental Biophysics
- Russian Academy of Sciences
- Moscow region
- 142290 Russia
| | - S. P. Romanchenko
- Institute of Theoretical and Experimental Biophysics
- Russian Academy of Sciences
- Moscow region
- 142290 Russia
| | - O. S. Ivanova
- Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- Moscow
- Russia
| | - A. A. Smirnov
- Institute of Theoretical and Experimental Biophysics
- Russian Academy of Sciences
- Moscow region
- 142290 Russia
| | - E. V. Mironova
- Institute of Theoretical and Experimental Biophysics
- Russian Academy of Sciences
- Moscow region
- 142290 Russia
| | - I. I. Selezneva
- Institute of Theoretical and Experimental Biophysics
- Russian Academy of Sciences
- Moscow region
- 142290 Russia
- Pushchino State Institute of Natural Sciences
| | - V. K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- Moscow
- Russia
- National Research Tomsk State University
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Popov AL, Ermakov AM, Savintseva IV, Selezneva II, Poltavtseva RA, Zaraisky EI, Poltavtsev AM, Stepanov AA, Ivanov VK, Sukhikh GT. CITRATE-STABILIZED NANOPARTICLES OF CeO2 STIMULATE PROLIFERATION OF HUMAN MESENCHYMAL STEM CELLS IN VITRO. ACTA ACUST UNITED AC 2016. [DOI: 10.1615/nanomechanicsscitechnolintj.v7.i3.20] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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10
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Akopova TA, Demina TS, Bagratashvili VN, Bardakova KN, Novikov MM, Selezneva II, Istomin AV, Svidchenko EA, Cherkaev GV, Surin NM, Timashev PS. Solid state synthesis of chitosan and its unsaturated derivatives for laser microfabrication of 3D scaffolds. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/1757-899x/87/1/012079] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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11
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Khramov RN, Fakhranurova LI, Paskevich SI, Anisimov SI, Manokhin AA, Simonova NB, Davydova GA, Selezneva II. Effect of sunlight transformed by luminophore-containing materials on cell functions in vitro and in vivo. Bull Exp Biol Med 2015; 158:440-2. [PMID: 25711665 DOI: 10.1007/s10517-015-2780-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Indexed: 10/23/2022]
Abstract
Effect of sunlight transformed by luminophore-containing materials on cell viability and functional state of the retina was assessed using the photodamage model. Exposure to the luminescent component of light improved viability of NIH 3T3 cells and promoted recovery of electric activity in rabbit retina after photodamage.
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Affiliation(s)
- R N Khramov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Moscow, Russia
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Poltavtseva RA, Nikonova YA, Selezneva II, Yaroslavtseva AK, Stepanenko VN, Esipov RS, Pavlovich SV, Klimantsev IV, Tyutyunnik NV, Grebennik TK, Nikolaeva AV, Sukhikh GT. Mesenchymal Stem Cells from Human Dental Pulp: Isolation, Characteristics, and Potencies of Targeted Differentiation. Bull Exp Biol Med 2014; 158:164-9. [DOI: 10.1007/s10517-014-2714-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Indexed: 01/09/2023]
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Grigor'ian AS, Filonov MR, Arkhipov AV, Selezneva II, Zhukova IS. [New type titan alloy with shape memory for use in dental implantology]. Stomatologiia (Mosk) 2013; 92:4-8. [PMID: 23528392] [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: 06/02/2023]
Abstract
The paper summarizes the results of in vitro and in vivo studies that have proved biocompatibility and medical safety of Ta and Ti-Nb-Ta-bases alloys. According to some in vitro data Ti-Nb-Ta-based alloy possesses certain advantages when comparing to Ta-based. In particular, it contributes to elevation of viability of cellular elements and to definite increase of their adhesive potential.
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Antonov EN, Popova AV, Selezneva II, Trofimov VV, Fedotov AY, Fomin AS. Mechanical characteristics of composites of polylactide and nanosized calcium phosphates formed in supercritical carbon dioxide. Russ J Phys Chem B 2012. [DOI: 10.1134/s1990793111080033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Grigor'ian AS, Shtanskiĭ DV, Selezneva II, Arkhipov AV. [Perspectives of use of polytetrafluoroethylene with nanostructured surface in dentistry]. Stomatologiia (Mosk) 2012; 91:4-7. [PMID: 23268208] [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: 06/01/2023]
Abstract
The perspectives of use of porous polytetrafluorethilen (PTPE) with modified surface combined with mesenchymal stem cells for tissue-engineering constructions were studied. The paper also describes the mode of PTPE surface modification consisting in nanostructured metallic or ceramic layer application resulting in biocompatibility and surface adhesion rates increase. The magnetic atomizing of Ti and Ti-Ca-P-C-O-N nanolayers enhances the material integration potential as well as adhesion rates thus making it perspective when combined with mesenchymal stem cells for bone defects plasty.
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16
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Ivanova OS, Shekunova TO, Ivanov VK, Shcherbakov AB, Popov AL, Davydova GA, Selezneva II, Kopitsa GP, Tret’yakov YD. One-stage synthesis of ceria colloid solutions for biomedical use. Dokl Chem 2011. [DOI: 10.1134/s0012500811040070] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Abstract
We performed qualitative comparison of freeze drying and chemical drying as methods of preparing 3D wet specimens for scanning electron microscopy. Human fibroblasts immobilized in collagen gel were used as a model system. Specimens fixed with glutaraldehyde were frozen in liquid nitrogen and freeze-dried at low temperature in high vacuum. In parallel experiments, glutaraldehyde-fixed samples were dehydrated in ascending ethanol solutions, absolute ethanol, and 100% hexamethyldisilazane and then dried at room temperature. Scanning electron microscopy microphotographs of collagen fibers and cells were characterized by high resolution and the absence of collapsed or deformed structures even at high magnification (×50,000) for both chemical drying and high-vacuum freeze drying. However, high-vacuum freeze drying is superior to chemical drying for the investigation of the internal space of 3D scaffolds, because sample fracture can be prepared directly in liquid nitrogen. These techniques are a part of the sample preparation process for scanning electron microscopy and can also be used for studies of cell adhesion, morphology, and arrangement in wet specimens (3D gels and flexible tissue engineering scaffolds).
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Affiliation(s)
- A G Pogorelov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Russia.
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Abstract
Experimental studies of composite materials formed on the basis of fluorine-containing latex and bioactive polysaccharides showed that physicochemical properties of composite materials and their adhesion characteristics can be modulated by variations of polysaccharide-latex ratio and the nature of polysaccharides. The ratio of components ensuring the formation of biosynthetic films that meet the standards for modern wound coating and maintain adhesion and growth of substrate-dependent mammalian cells was determined. These materials can considerably increase the efficiency of treatment of extensive and deep skin wounds in cases when application of cell cultures is indicated.
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Affiliation(s)
- G A Davydova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino
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Selezneva II, Savintseva IV, Vikhlyantseva EF, Davydova GA, Gavrilyuk BK. Immobilization and long-term culturing of mouse embryonic stem cells in collagen-chitosan gel matrix. Bull Exp Biol Med 2007; 142:119-22. [PMID: 17369920 DOI: 10.1007/s10517-006-0308-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [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: 10/24/2022]
Abstract
We propose a method of creation of a 3D matrix consisting of native collagen fibers and natural polysaccharide chitosan. The collagen-chitosan hydrogels maintain viability and prolipherative activity of embryonic stem cells obtained from internal cells of mouse blastocyst. The proposed system forming hydrogels in situ can be used in cell therapy for immobilization and targeted delivery of stem cells.
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Affiliation(s)
- I I Selezneva
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino.
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Selezneva II, Gorelov AV, Rochev YA. Use of thermosensitive polymer material on the basis of N-isopropylacrylamide and N-tert-butylacrylamide copolymer in cell technologies. Bull Exp Biol Med 2006; 142:538-41. [PMID: 17415456 DOI: 10.1007/s10517-006-0411-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [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: 11/30/2022]
Abstract
We developed thermosensitive polymer substrates on the basis of N-isopropylacrylamide and N-tert-butylacrylamide co-polymer and studied their interaction with cultured substrate-dependent mammalian cells. It was shown that these polymers promote cell adhesion and proliferation at a level comparable to polystyrene treated for cell culturing and provide effective cell detachment after lowering culturing temperature below a critical level determined by phase transition temperature in aqueous solutions of polymers. A dependence of phase transition temperature on the ratio between N-isopropylacrylamide and N-tert-butylacrylamide was demonstrated. Differences in the dynamics of cell detachment from the surface of polymer substrates with various proportions between the components were shown.
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Affiliation(s)
- I I Selezneva
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino
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Chailakhyan TA, Davydova GA, Kovaleva MA, Selezneva II, Chailakhyan LM, Gavrilyuk BK. Factors affecting survival of reconstructed mouse embryos after nuclear transfer. Bull Exp Biol Med 2005; 139:145-9. [PMID: 16142298 DOI: 10.1007/s10517-005-0233-2] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Reconstruction of mouse embryos was performed by injection of donor genetic material from differentiated cells of various types (cumulus cells, cardiomyocytes, and epithelial cells) into recipient cells (mature oocytes and zygotes). A medium for microsurgery was selected, which enhanced survival of both embryonic and somatic cells during the reconstructive manipulations. Special preparation of somatic cells to transplantation was carried out, which employed factors synchronizing the cells in a certain phase of the cell cycle in order to enhance their capacity to maintain the development of reconstructed embryos. The processes of nucleus reprogramming in specialized cells under the action of cytoplasmic factors of oocytes and zygotes were examined. During in vitro culturing of reconstructed embryos, the most successful development was observed in embryos implanted with donor material from cumulus cells. Mouse embryos reconstructed with a certain genome and subsequent production and use of stem cells are considered as the model system for developing the basic principles of replacement therapy.
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Affiliation(s)
- T A Chailakhyan
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, Russia
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Kavanagh CA, Gorelova TA, Selezneva II, Rochev YA, Dawson KA, Gallagher WM, Gorelov AV, Keenan AK. Poly(N-isopropylacrylamide) copolymer films as vehicles for the sustained delivery of proteins to vascular endothelial cells. J Biomed Mater Res A 2005; 72:25-35. [PMID: 15532083 DOI: 10.1002/jbm.a.30192] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [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: 11/06/2022]
Abstract
The aim of this study was to establish the capacity of thermoresponsive poly(N-isopropylacrylamide) copolymer films to deliver bioactive concentrations of vascular endothelial growth factor (VEGF165) to human aortic endothelial cells (HAEC) over an extended time period. Films were prepared using a 50:50 (w/w) mixture of non-crosslinkable and crosslinkable copolymers of the following monomer compositions (w/w): 85:15, N-isopropylacrylamide (NiPAAm):N-tert-butylacrylamide (NtBAAm); and 85:13:2 NiPAAm:NtBAAm:acrylamidobenzophenone (ABzPh, crosslinking agent), respectively. After crosslinking by UV irradiation, the ability of films to incorporate a fluorescently labeled carrier protein (FITC-labeled BSA, 1 mg loaded per film), at 4 degrees C, was first established. Incorporation into the matrix was confirmed by the observation that increasing film thickness from 5 to 10 microm increased release from collapsed films at 37 degrees C (1.76 +/- 0.15 and 10.98 +/- 3.38 microg/mL, respectively, at 24 h postloading) and that this difference was maintained at 5 days postloading (1.81 +/- 0.25 and 13.8 +/- 2.3 microg/mL, respectively). Incorporation was also confirmed by visualization using confocal microscopy. When 10-microm films were loaded with a BSA solution (1 mg/mL) containing VEGF165 (3 microg/mL), sustained release of VEGF165 was observed (10.75 +/- 3.11 ng at 24 h; a total of 31.32 +/- 8.50 ng over 7 days). Furthermore, eluted VEGF165 increased HAEC proliferation by 18.2% over control. The absence of cytotoxic species in medium released from the copolymer films was confirmed by the lack of effect of medium (incubated with copolymer films for 3 days) on HAEC viability. In conclusion this study has shown that NiPAAm:NtBAAm copolymers can be loaded with a therapeutic protein and can deliver bioactive concentrations to human vascular endothelial cells over an extended time period.
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Affiliation(s)
- C A Kavanagh
- Department of Pharmacology, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Ireland
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Davydova GA, Selezneva II, Gavriliuk BK. [A study of the effect of irradiation hardness on the properties of the fluoropolymeric matrix modified by polyanionic biologically active substances]. Biofizika 2004; 49:809-13. [PMID: 15526464] [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: 05/01/2023]
Abstract
The properties of a synthetic substrate responsible for the behavior of substrate-dependent cells in the culture were studied. The effect of the composition of a system water-soluble biopolymer (sodium alginate or methyl cellulose)-synthetic latex SKF-26 and the effect of various types of radiations on its biophysical properties were studied. The results obtained indicate that the addition of water-soluble biopolymeric additives to synthetic polymeric films improves the adhesion of cells to the substrate, the adhesion being closely related to the concentration of additives. It was found that the modification methods that determine changes in the charge of the substrate affect the capacity of different cell types for adhesion and proliferation. It was also found that the hardness of irradiation does not affect the vapor permeability and the extent of film swelling.
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Nikolaeva TI, Pisachenko AI, Selezneva II, Rochev IA, Gavriliuk BK. [Self-assembly of collagen type I molecules without telopeptides]. Biofizika 2000; 45:1146-9. [PMID: 11155247] [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: 02/18/2023]
Abstract
The effect of temperature on the kinetics of formation of fibrils from rat tail collagen molecules devoid of telopeptides was studied. It was shown that the rats of fibril formation at 30 and 35 degrees C increases five- and eightfold, respectively, as compared with that at 25 degrees C. It was found that enthalpy of fibril denaturation at 30 degrees C is maximal for the collagen both with intact telopeptides and devoid of telopeptides. It was found that essential for the fibrilogenesis of type I collagen devoid of telopeptides are temperatures of 30 and 35 degrees C.
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Iurkevich DI, Kutyshenko VP, Selezneva II, Rochev IA. [The use of 1H-NMR spectroscopy for the study of cell cultures]. Biofizika 1996; 41:1284-8. [PMID: 9044623] [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: 02/03/2023]
Abstract
Production of lactate by the HSR-1, HSR-8, HET-SR fibroblasts have been investigated by 1H-NMR method. Were investigated both monolayer cell cultures and cells immobilized in collagen lattice. Represented data demonstrate the possibility of the NMR-spectroscopy to investigate growth's processes in the cell cultures.
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Selezneva II, Kuz'min SV, Nikolaeva TI, Rochev IA. [Use of polarized thermomicroscopy for recording formation and degrading processes of collagen fibrils]. Biofizika 1996; 41:541-2. [PMID: 8723676] [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
Polarized thermomicroscopic method were used for registration of collagen fibril formation and thermal degradation processes. It was compared with differential scanning microcalorimetry and optical density measurement methods and recommended as a fast method for registration of collagen fibril formation and degradation processes.
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Gavriliuk BK, Nikolaeva TI, Rochev IA, Riabokon' PP, Selezneva II. [Collagen gels, chondroitin-4-sulfate. Proteolytic stability]. Biofizika 1995; 40:1356-7. [PMID: 8590728] [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: 01/31/2023]
Abstract
Differential scanning microcalorimetry and polarized thermomicroscopic methods were used for studying of collagen type I and chondroitin-4-sulfate complexes. It was shown that fast heating till 37 degrees C lead to collagen gel formation, which is stable for collagenase action.
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Korobko VG, Selezneva II, Shingarova LN, Filippov SA, Dobrynin VN. [Construction of a gene coding for the precursor of human tumor necrosis factor]. Bioorg Khim 1991; 17:1365-8. [PMID: 1804120] [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
The cDNA sequence for human tumor necrosis factor (hTNF) was reconstructed in vitro from genomic sequence. Using the oligonucleotide directed mutagenesis, a site for restriction endonuclease ClaI was introduced into the end of the first exon. The nucleotide sequence representing the second and third exons flanked with restriction sites ClaI and XhoI was obtained by means of chemical enzymatic synthesis. Assembly of the total gene coding for precursor of hTNF was accomplished in pTNF33 plasmid containing semisynthetic gene for mature hTNF with appropriate restriction sites.
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