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Kotelnikov GP, Kim YD, Shitikov DS, Pankratov AS, Knyazev NA. [Method of surgical treatment of patients with a chronic rupture of the Achilles tendon]. Khirurgiia (Mosk) 2022:38-44. [PMID: 35146998 DOI: 10.17116/hirurgia202202138] [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] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To improve treatment outcomes in patients with long-standing Achilles tendon ruptures with severe diastasis and dysfunction of the calf muscle via the use of a new method of surgical treatment. MATERIAL AND METHODS The authors proposed a new method of Achilles tendon repair for diastasis from 5 to 10 cm. This technique consists in elimination of diastasis with a tendon of the long peroneal muscle on the distal base. Surgical stages are described. The authors also report a patient with long-standing Achilles tendon rupture. Surgical treatment and postoperative outcomes are described. RESULTS Postoperative outcomes were assessed in 23 patients. The control group consisted of 21 patients who underwent reconstruction according to Chernavsky's and Krasnov's methods. Assessment was carried out using clinical and biomechanical methods. The authors analyzed gait asymmetry and functional myography data. Their data indicate the advantage of treatment in the main group.
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Affiliation(s)
- G P Kotelnikov
- Samara State Medical University, Samara, Russian Federation
| | - Yu D Kim
- Samara State Medical University of the Ministry of Health of Russia Samara State Medical University Clinics, Samara, Russia
| | - D S Shitikov
- Samara State Medical University, Samara, Russian Federation
| | - A S Pankratov
- Samara State Medical University of the Ministry of Health of Russia Samara State Medical University Clinics, Samara, Russia
| | - N A Knyazev
- Samara State Medical University, Samara, Russian Federation
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2
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Kotelnikov GP, Kim YD, Shitikov DS, Knyazev NA, Likholatov NE. [Postoperative outcomes in patients with closed patellar fractures]. Khirurgiia (Mosk) 2022:89-96. [PMID: 35289554 DOI: 10.17116/hirurgia202203189] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To improve postoperative outcomes in patients with closed patellar fractures using a new method of surgical treatment. MATERIAL AND METHODS The authors proposed a new method of patellar osteosynthesis. Technique of osteosynthesis is described, and surgical scheme is presented. Treatment outcomes were analyzed in 68 patients with closed patellar fractures. The control group consisted of 34 patients who underwent Weber osteosynthesis. The authors assessed clinical and radiological data. Moreover, clinical example of a patient with traumatic closed patellar fracture and illustrations of surgical treatment are presented. RESULTS Clinical data indicate the advantage of treatment in the main group.
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Affiliation(s)
| | - Yu D Kim
- Samara State Medical University, Samara, Russia
| | | | - N A Knyazev
- Samara State Medical University, Samara, Russia
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Latypova DK, Shmakov SV, Pechkovskaya SA, Filatov AS, Stepakov AV, Knyazev NA, Boitsov VM. Identification of Spiro-Fused Pyrrolo[3,4- a]pyrrolizines and Tryptanthrines as Potential Antitumor Agents: Synthesis and In Vitro Evaluation. Int J Mol Sci 2021; 22:ijms222111997. [PMID: 34769424 PMCID: PMC8584944 DOI: 10.3390/ijms222111997] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/31/2021] [Accepted: 11/02/2021] [Indexed: 01/01/2023] Open
Abstract
A series of heterocyclic compounds containing a spiro-fused pyrrolo[3,4-a]pyrrolizine and tryptanthrin framework have been synthesized and studied as potential antitumor agents. Cytotoxicity of products was screened against human erythroleukemia (K562) and human cervical carcinoma (HeLa) cell lines. Among the screened compounds. 4a, 4b and 5a were active against human erythroleukemia (K562) cell line, while 4a and 5a were active against cervical carcinoma (HeLa) cell line. In agreement with the DNA cytometry studies, the tested compounds have achieved significant cell-cycle perturbation with higher accumulation of cells in G2/M phase and induced apoptosis. Using confocal microscopy, we found that with 4a and 5a treatment of HeLa cells, actin filaments disappeared, and granular actin was distributed diffusely in the cytoplasm in 76–91% of cells. We discovered that HeLa cells after treatment with compounds 4a and 5a significantly reduced the number of cells with filopodium-like membrane protrusions (from 63 % in control cells to 29% after treatment) and a decrease in cell motility.
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Affiliation(s)
- Diana K. Latypova
- Saint-Petersburg National Research Academic University of the Russian Academy of Sciences, 194021 Saint-Petersburg, Russia; (D.K.L.); (S.V.S.)
| | - Stanislav V. Shmakov
- Saint-Petersburg National Research Academic University of the Russian Academy of Sciences, 194021 Saint-Petersburg, Russia; (D.K.L.); (S.V.S.)
| | - Sofya A. Pechkovskaya
- Institute of Cytology, Russian Academy of Sciences, 194064 Saint-Petersburg, Russia;
| | - Alexander S. Filatov
- Department of Chemistry, Saint-Petersburg State University, 199034 Saint Petersburg, Russia; (A.S.F.); (A.V.S.)
| | - Alexander V. Stepakov
- Department of Chemistry, Saint-Petersburg State University, 199034 Saint Petersburg, Russia; (A.S.F.); (A.V.S.)
- Department of Organic Chemistry, Saint Petersburg State Institute of Technology, 190013 Saint-Petersburg, Russia
| | - Nickolay A. Knyazev
- Institute of Cytology, Russian Academy of Sciences, 194064 Saint-Petersburg, Russia;
- Saint-Petersburg Clinical Scientific and Practical Center for Specialized Types of Medical Care (Oncological), 197758 Saint-Petersburg, Russia
- Correspondence: (N.A.K.); (V.M.B.)
| | - Vitali M. Boitsov
- Saint-Petersburg National Research Academic University of the Russian Academy of Sciences, 194021 Saint-Petersburg, Russia; (D.K.L.); (S.V.S.)
- Correspondence: (N.A.K.); (V.M.B.)
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4
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Eliseev IE, Ukrainskaya VM, Yudenko AN, Mikushina AD, Shmakov SV, Afremova AI, Ekimova VM, Vronskaia AA, Knyazev NA, Shamova OV. Targeting ErbB3 Receptor in Cancer with Inhibitory Antibodies from Llama. Biomedicines 2021; 9:biomedicines9091106. [PMID: 34572289 PMCID: PMC8467012 DOI: 10.3390/biomedicines9091106] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 07/12/2021] [Revised: 08/23/2021] [Accepted: 08/25/2021] [Indexed: 01/05/2023] Open
Abstract
The human ErbB3 receptor confers resistance to the pharmacological inhibition of EGFR and HER2 receptor tyrosine kinases in cancer, which makes it an important therapeutic target. Several anti-ErbB3 monoclonal antibodies that are currently being developed are all classical immunoglobulins. We took a different approach and discovered a group of novel heavy-chain antibodies targeting the extracellular domain of ErbB3 via a phage display of an antibody library from immunized llamas. We first produced three selected single-domain antibodies, named BCD090-P1, BCD090-M2, and BCD090-M456, in E. coli, as SUMO fusions that yielded up to 180 mg of recombinant protein per liter of culture. Then, we studied folding, aggregation, and disulfide bond formation, and showed their ultimate stability with half-denaturation of the strongest candidate, BCD090-P1, occurring in 8 M of urea. In surface plasmon resonance experiments, two most potent antibodies, BCD090-P1 and BCD090-M2, bound the extracellular domain of ErbB3 with 1.6 nM and 15 nM affinities for the monovalent interaction, respectively. The receptor binding was demonstrated by immunofluorescent confocal microscopy on four different ErbB3+ cancer cell lines. We observed that BCD090-P1 and BCD090-M2 bind noncompetitively to two distinct epitopes on the receptor. Both antibodies inhibited the ErbB3-driven proliferation of MCF-7 breast adenocarcinoma cells and HER2-overexpressing SK-BR-3 cells, with the EC50 in the range of 0.1–25 μg/mL. BCD090-M2 directly blocks ligand binding, whereas BCD090-P1 does not compete with the ligand and presumably acts through a distinct allosteric mechanism. We anticipate that these llama antibodies can be used to engineer new biparatopic anti-ErbB3 or bispecific anti-ErbB2/3 antibodies.
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Affiliation(s)
- Igor E. Eliseev
- Laboratory of Renewable Energy Sources, Alferov University, St. Petersburg 194021, Russia; (A.D.M.); (S.V.S.); (A.A.V.)
- Center for Personalized Medicine, FSBSI Institute of Experimental Medicine, St. Petersburg 197376, Russia;
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow 117997, Russia;
- Correspondence:
| | - Valeria M. Ukrainskaya
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow 117997, Russia;
| | - Anna N. Yudenko
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny 141700, Russia;
| | - Anna D. Mikushina
- Laboratory of Renewable Energy Sources, Alferov University, St. Petersburg 194021, Russia; (A.D.M.); (S.V.S.); (A.A.V.)
| | - Stanislav V. Shmakov
- Laboratory of Renewable Energy Sources, Alferov University, St. Petersburg 194021, Russia; (A.D.M.); (S.V.S.); (A.A.V.)
| | | | | | - Anna A. Vronskaia
- Laboratory of Renewable Energy Sources, Alferov University, St. Petersburg 194021, Russia; (A.D.M.); (S.V.S.); (A.A.V.)
| | - Nickolay A. Knyazev
- Saint-Petersburg Clinical Scientific and Practical Center for Specialized Types of Medical Care (Oncological), St. Petersburg 197758, Russia;
| | - Olga V. Shamova
- Center for Personalized Medicine, FSBSI Institute of Experimental Medicine, St. Petersburg 197376, Russia;
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Knyazev NA, Shmakov SV, Pechkovskaya SA, Filatov AS, Stepakov AV, Boitsov VM, Filatova NA. Identification of Spiro-Fused [3-azabicyclo[3.1.0]hexane]oxindoles as Potential Antitumor Agents: Initial In Vitro Evaluation of Anti-Proliferative Effect and Actin Cytoskeleton Transformation in 3T3 and 3T3-SV40 Fibroblast. Int J Mol Sci 2021; 22:8264. [PMID: 34361029 PMCID: PMC8347490 DOI: 10.3390/ijms22158264] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 07/26/2021] [Accepted: 07/28/2021] [Indexed: 11/17/2022] Open
Abstract
Novel heterocyclic compounds containing 3-spiro[3-azabicyclo[3.1.0]hexane]oxindole framework (4a, 4b and 4c) have been studied as potential antitumor agents. The in silico ADMET (adsorption, distribution, metabolism, excretion and toxicity) analysis was performed on 4a-c compounds with promising antiproliferative activity, previously synthetized and screened against human erythroleukemic cell line K562 tumor cell line. Cytotoxicity of 4a-c against murine fibroblast 3T3 and SV-40 transformed murine fibroblast 3T3-SV40 cell lines were evaluated. The 4a and 4c compounds were cytotoxic against 3T3-SV40 cells in comparison with those of 3T3. In agreement with the DNA cytometry studies, the tested compounds have achieved significant cell-cycle perturbation with higher accumulation of cells in G0/G1 phase. Using confocal microscopy, we found that with 4a and 4c treatment of 3T3 cells, actin filaments disappeared, and granular actin was distributed diffusely in the cytoplasm in 82-97% of cells. The number of 3T3-SV40 cells with stress fibers increased to 7-30% against 2% in control. We discovered that transformed 3T3-SV40 cells after treatment with compounds 4a and 4c significantly reduced the number of cells with filopodium-like membrane protrusions (from 86 % in control cells to 6-18% after treatment), which indirectly suggests a decrease in cell motility. We can conclude that the studied compounds 4a and 4c have a cytostatic effect, which can lead to a decrease in the number of filopodium-like membrane protrusions.
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Affiliation(s)
- Nickolay A. Knyazev
- Saint-Petersburg Clinical Scientific and Practical Center for Specialized Types of Medical Care (Oncological), 197758 Saint Petersburg, Russia
- Institute of Cytology, Russian Academy of Sciences, 194064 Saint Petersburg, Russia; (S.A.P.); (N.A.F.)
| | - Stanislav V. Shmakov
- Saint Petersburg National Research Academic University of the Russian Academy of Sciences, 194021 Saint Petersburg, Russia;
| | - Sofya A. Pechkovskaya
- Institute of Cytology, Russian Academy of Sciences, 194064 Saint Petersburg, Russia; (S.A.P.); (N.A.F.)
| | - Alexander S. Filatov
- Department of Chemistry, Saint Petersburg State University, 199034 Saint Petersburg, Russia; (A.S.F.); (A.V.S.)
| | - Alexander V. Stepakov
- Department of Chemistry, Saint Petersburg State University, 199034 Saint Petersburg, Russia; (A.S.F.); (A.V.S.)
| | - Vitali M. Boitsov
- Saint Petersburg National Research Academic University of the Russian Academy of Sciences, 194021 Saint Petersburg, Russia;
- Scientific and Research Centre, Pavlov First Saint Petersburg State Medical University, 197022 Saint Petersburg, Russia
| | - Natalia A. Filatova
- Institute of Cytology, Russian Academy of Sciences, 194064 Saint Petersburg, Russia; (S.A.P.); (N.A.F.)
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Pechkovskaya SA, Knyazev NA, Matantseva OV, Emelyanov AK, Telesh IV, Skarlato SO, Filatova NA. Dur3 and nrt2 genes in the bloom-forming dinoflagellate Prorocentrum minimum: Transcriptional responses to available nitrogen sources. Chemosphere 2020; 241:125083. [PMID: 31683425 DOI: 10.1016/j.chemosphere.2019.125083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 06/13/2019] [Revised: 09/06/2019] [Accepted: 10/07/2019] [Indexed: 06/10/2023]
Abstract
The increasing inflow of nitrogen (N) substrates into marine nearshore ecosystems induces proliferation of harmful algal blooms (HABs) of dinoflagellates, such as potentially toxic invasive species Prorocentrum minimum. In this study, we estimated the influence of NO3-, NH4+ and urea on transcription levels and urea transporter dur3 and nitrate transporter nrt2 genes expression in these dinoflagellates. We identified dur3 and nrt2 genes sequences in unannotated transcriptomes of P. minimum and other dinoflagellates presented in MMETSP database. Phylogenetic analysis showed that these genes of dinoflagellates clustered to the distinct clade demonstrating evolutionary relationship with the other known dur3 and nrt2 genes of microalgae. The evaluation of expression levels of dur3 and nrt2 genes by RT-qPCR revealed their sensitivity to input of the studied N sources. Dur3 expression levels were downregulated after the supplementation of additional N sources and were 1.7-2.6-fold lower than in the nitrate-grown culture. Nrt2 expression levels decreased 1.9-fold in the presence of NH4+. We estimated total RNA and DNA synthesis rates by the analysis of incorporation of 3H-thymidine and 3H-uridine in batch and continuous cultures. Addition of N compounds did not affect the DNA synthesis rates. Transcription levels increased up to 12.5-fold after the N supplementation in urea-limited treatments. Investigation of various nitrogen sources as biomarkers of dinoflagellate proliferation due to their differentiated impact on expression of dur3 and nrt2 genes and transcription rates in P. minimum cells allowed concluding about high potential of the studied parameters for future modeling of HABs under global N pollution.
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Affiliation(s)
- S A Pechkovskaya
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
| | - N A Knyazev
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia; St. Petersburg Academic University of Nanotechnology Research and Education Centre, St. Petersburg, Russia
| | - O V Matantseva
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
| | - A K Emelyanov
- Pavlov First State Medical University of St. Petersburg, St. Petersburg, Russia
| | - I V Telesh
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia; Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia.
| | - S O Skarlato
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
| | - N A Filatova
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
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Eliseev IE, Yudenko AN, Vysochinskaya VV, Svirina AA, Evstratyeva AV, Drozhzhachih MS, Krendeleva EA, Vladimirova AK, Nemankin TA, Ekimova VM, Ulitin AB, Lomovskaya MI, Yakovlev PA, Bukatin AS, Knyazev NA, Moiseenko FV, Chakchir OB. Crystal structures of a llama VHH antibody BCD090-M2 targeting human ErbB3 receptor. F1000Res 2018; 7:57. [PMID: 30430004 PMCID: PMC6097396 DOI: 10.12688/f1000research.13612.2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/02/2018] [Indexed: 01/26/2023] Open
Abstract
Background: The ability of ErbB3 receptor to functionally complement ErbB1-2 and induce tumor resistance to their inhibitors makes it a unique target in cancer therapy by monoclonal antibodies. Here we report the expression, purification and structural analysis of a new anti-ErbB3 single-chain antibody. Methods: The VHH fragment of the antibody was expressed in E. coli SHuffle cells as a SUMO fusion, cleaved by TEV protease and purified to homogeneity. Binding to the extracellular domain of ErbB3 was studied by surface plasmon resonance. For structural studies, the antibody was crystallized by hanging-drop vapor diffusion in two different forms. Results: We developed a robust and efficient system for recombinant expression of single-domain antibodies. The purified antibody was functional and bound ErbB3 with K D =15±1 nM. The crystal structures of the VHH antibody in space groups C2 and P1 were solved by molecular replacement at 1.6 and 1.9 Å resolution. The high-quality electron density maps allowed us to build precise atomic models of the antibody and the putative paratope. Surprisingly, the CDR H2 existed in multiple distant conformations in different crystal forms, while the more complex CDR H3 had a low structural variability. The structures were deposited under PDB entry codes 6EZW and 6F0D. Conclusions: Our results may facilitate further mechanistic studies of ErbB3 inhibition by single-chain antibodies. Besides, the solved structures will contribute to datasets required to develop new computational methods for antibody modeling and design.
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Affiliation(s)
- Igor E. Eliseev
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
| | - Anna N. Yudenko
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
| | - Vera V. Vysochinskaya
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
| | - Anna A. Svirina
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
| | | | | | | | | | | | | | | | | | | | - Anton S. Bukatin
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
| | - Nickolay A. Knyazev
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
| | - Fedor V. Moiseenko
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
| | - Oleg B. Chakchir
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
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8
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Eliseev IE, Yudenko AN, Vysochinskaya VV, Svirina AA, Evstratyeva AV, Drozhzhachih MS, Krendeleva EA, Vladimirova AK, Nemankin TA, Ekimova VM, Ulitin AB, Lomovskaya MI, Yakovlev PA, Bukatin AS, Knyazev NA, Moiseenko FV, Chakchir OB. Crystal structures of a llama VHH antibody BCD090-M2 targeting human ErbB3 receptor. F1000Res 2018; 7:57. [PMID: 30430004 PMCID: PMC6097396 DOI: 10.12688/f1000research.13612.1] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/10/2018] [Indexed: 12/31/2022] Open
Abstract
Background: The ability of ErbB3 receptor to functionally complement ErbB1-2 and induce tumor resistance to their inhibitors makes it a unique target in cancer therapy by monoclonal antibodies. Here we report the expression, purification and structural analysis of a new anti-ErbB3 single-chain antibody. Methods: The VHH fragment of the antibody was expressed in E. coli SHuffle cells as a SUMO fusion, cleaved by TEV protease and purified to homogeneity. Binding to the extracellular domain of ErbB3 was studied by surface plasmon resonance. For structural studies, the antibody was crystallized by hanging-drop vapor diffusion in two different forms. Results: We developed a robust and efficient system for recombinant expression of single-domain antibodies. The purified antibody was functional and bound ErbB3 with K D = 1 μM. The crystal structures of the VHH antibody in space groups C2 and P1 were solved by molecular replacement at 1.6 and 1.9 Å resolution. The high-quality electron density maps allowed us to build precise atomic models of the antibody and the putative paratope. Surprisingly, the CDR H2 existed in multiple distant conformations in different crystal forms, while the more complex CDR H3 had a low structural variability. The structures were deposited under PDB entry codes 6EZW and 6F0D. Conclusions: Our results may facilitate further mechanistic studies of ErbB3 inhibition by single-chain antibodies. Besides, the solved structures will contribute to datasets required to develop new computational methods for antibody modeling and design.
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Affiliation(s)
- Igor E. Eliseev
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
| | - Anna N. Yudenko
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
| | - Vera V. Vysochinskaya
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
| | - Anna A. Svirina
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
| | | | | | | | | | | | | | | | | | | | - Anton S. Bukatin
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
| | - Nickolay A. Knyazev
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
| | - Fedor V. Moiseenko
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
| | - Oleg B. Chakchir
- St. Petersburg National Research Academic University RAS, St. Petersburg, 194021, Russian Federation
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9
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Filatov AS, Knyazev NA, Molchanov AP, Panikorovsky TL, Kostikov RR, Larina AG, Boitsov VM, Stepakov AV. Synthesis of Functionalized 3-Spiro[cyclopropa[a]pyrrolizine]- and 3-Spiro[3-azabicyclo[3.1.0]hexane]oxindoles from Cyclopropenes and Azomethine Ylides via [3 + 2]-Cycloaddition. J Org Chem 2017; 82:959-975. [PMID: 28004934 DOI: 10.1021/acs.joc.6b02505] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
3-Spiro[cyclopropa[a]pyrrolizine]- and 3-spiro[3-azabicyclo[3.1.0]hexane]oxindoles were prepared in moderate to high yields via one-pot three-component reactions using substituted isatins, α-amino acids, and cyclopropenes. The key step is an intramolecular [3 + 2]-cycloaddition reaction of an in situ generated azomethine ylide onto a cyclopropene. Both N-substituted and N-unsubstituted α-amino acids, dipeptide Gly-Gly, and also benzylamine were used as the amine component for the azomethine ylide generation. The anticancer activity of some of the obtained compounds against human leukemia K562 cell line was evaluated by flow cytometry in vitro.
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Affiliation(s)
- Alexander S Filatov
- Saint-Petersburg State University , 7/9 Universitetskaya nab., St. Petersburg, 199034, Russian Federation
| | - Nickolay A Knyazev
- Saint-Petersburg Academic University - Nanotechnology Research and Education Centre RAS , ul. Khlopina 8/3, St. Petersburg, 194021, Russian Federation.,Institute of Cytology of the Russian Academy of Science , Tikhoretsky pr. 4, St. Petersburg 194064, Russian Federation
| | - Alexander P Molchanov
- Saint-Petersburg State University , 7/9 Universitetskaya nab., St. Petersburg, 199034, Russian Federation
| | - Taras L Panikorovsky
- Saint-Petersburg State University , 7/9 Universitetskaya nab., St. Petersburg, 199034, Russian Federation
| | - Rafael R Kostikov
- Saint-Petersburg State University , 7/9 Universitetskaya nab., St. Petersburg, 199034, Russian Federation
| | - Anna G Larina
- Saint-Petersburg State University , 7/9 Universitetskaya nab., St. Petersburg, 199034, Russian Federation
| | - Vitali M Boitsov
- Saint-Petersburg Academic University - Nanotechnology Research and Education Centre RAS , ul. Khlopina 8/3, St. Petersburg, 194021, Russian Federation.,Pavlov First Saint Petersburg State Medical University , ul. L'va Tolstogo 6/8, St. Petersburg 197022, Russian Federation
| | - Alexander V Stepakov
- Saint-Petersburg State University , 7/9 Universitetskaya nab., St. Petersburg, 199034, Russian Federation.,Voeikov Main Geophysical Observatory , ul. Karbysheva 7, St. Petersburg 194021, Russian Federation
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10
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Knyazev NA, Samoilova KA, Abrahamse H, Filatova NA. Polychromatic Light (480-3400 nm) Upregulates Sensitivity of Tumor Cells to Lysis by Natural Killers. Photomed Laser Surg 2016; 34:373-8. [PMID: 27575833 DOI: 10.1089/pho.2016.4159] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE This study evaluates the participation of immunological mechanisms of downregulation of murine hepatoma cells MH22a after direct exposure to polychromatic polarized light. BACKGROUND DATA Previous studies have shown that exposure to a combination of visible (VIS) and infrared (IR) light leads to decreased tumorigenicity of the murine hepatoma cells MH22a, which correlated with an increase in the amount of cells with reorganized cytoskeleton in the submembrane region. The mechanism of tumor inhibition and elimination has not been determined. MATERIALS AND METHODS Polychromatic light (480-3400 nm) has been used at doses of 4.8 and 9.6 J/cm(2) to determine the sensitivity of murine MH22a cells and human erythroleukemia cells K562 exposed to this light, to lysis by effector cells of innate immunity (NK cells), and enhancement of the glycocalyx of the studied tumor cells. This was determined using flow cytometry, the H(3)-uridine cytotoxic test followed by spectrophotometry. RESULTS VIS-IR light increases the sensitivity of MH-22a cells at a dose 4.8 J/cm(2) and K562 cells at 9.6 J/cm(2). The enhancement of sensitivity of tumor cells to NK lysis changed their ability to absorb alcian blue, reflecting a change in the expression of the glycocalyx. CONCLUSIONS Increasing the sensitivity of the murine tumor cells MH22a and human K562 irradiated VIS-IR light correlated with a change in the expression of their glycocalyx. The results of the present study demonstrate that the reduction of tumorigenicity of irradiated tumor cells is due to their sensitivity to lysis by NK cells of the immune system.
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Affiliation(s)
- Nickolay A Knyazev
- 1 Institute of Cytology of the Russian Academy of Science , St. Petersburg, Russia .,2 Institution of the Russian Academy of Sciences Saint Petersburg Academic University-Nanotechnology Research and Education Centre RAS , St Petersburg, Russia
| | - Kira A Samoilova
- 1 Institute of Cytology of the Russian Academy of Science , St. Petersburg, Russia
| | - Heidi Abrahamse
- 3 Laser Research Centre, Faculty of Health Sciences, University of Johannesburg , Doornfontein, South Africa
| | - Natalia A Filatova
- 1 Institute of Cytology of the Russian Academy of Science , St. Petersburg, Russia
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Klimenko VV, Knyazev NA, Moiseenko FV, Rusanov AA, Bogdanov AA, Dubina MV. Pulse mode of laser photodynamic treatment induced cell apoptosis. Photodiagnosis Photodyn Ther 2016; 13:101-107. [DOI: 10.1016/j.pdpdt.2016.01.003] [Citation(s) in RCA: 19] [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: 10/26/2015] [Revised: 12/16/2015] [Accepted: 01/06/2016] [Indexed: 11/16/2022]
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Filatova NA, Samoilova KA, Knyazev NA. [Polychromatic visible and infrared light (480-3400 nm) downregulates the growth of hepatoma MH22a in mice]. Vopr Onkol 2016; 62:507-513. [PMID: 30463109] [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: 06/09/2023]
Abstract
We studied the effect of polychromatic visible (380-750 nm) (VIS) and combined with the visible infrared (480-3400 nm) (VIS-IR) radiation on the growth of hepatoma in mice. In the first series of experiments on C3HA mice with subcutaneously transplanted syngeneic hepatoma MH22a it was shown 1.5-4 times inhibition of tumor volume after irradiation of tumor-bearing mice with VIS-infrared light at a dose 4.8 J/ cm2. Mice irradiation at doses of 9.6 J/cm2 and 38.4 J/cm2 had no effect on the rate of tumor growth. Exposition to VIS and IR-light in all doses we used an increase of the surviveness of animals in the 1.5 and 2 times respectively was observed. In a second series of experiments we investigated the effect VIS-IR radiation on tumor cells in vitro with subsequent inoculation to intact mice. After implantation in mice irradiated cells at a dose of 4.8 J/cm2 9.6 J/cm2 inhibition of tumor growth during the first 25 days at 3-12 times as compared to control and increased survival in mice 1.5-2 respectively was observed. The main results of this study consists in the fact that none of the doses used VIS and a IR-radiation has not been shown to stimulate tumor growth both in irradiated mice with tumors, and the irradiation of MH22a hepatoma cells under in vitro conditions prior to transplantation of intact mice. Furthermore it was detected dose range VIS-IR light (4.8-9.6 Joules/cm2) when the rate of growth of hepatoma MH22a decreased and increased surviveness of animals.
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Knyazev NA, Samoilova KA, Abrahamse H, Filatova NA. Downregulation of tumorogenicity and changes in the actin cytoskeleton of murine hepatoma after irradiation with polychromatic visible and IR light. Photomed Laser Surg 2015; 33:185-92. [PMID: 25789943 DOI: 10.1089/pho.2014.3838] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE This study evaluated the function and structural consequences of direct exposure of murine hepatoma MH-22a cells to polychromatic polarized light, to determine potential risk of malignancy following irradiation. BACKGROUND DATA Visible (VIS) and infrared (IR) light have been actively used for prevention and treatment of complications developed after conventional tumor therapy. However, the safety associated with this irradiation has not been determined. MATERIALS AND METHODS Polychromatic light (480-3400 and 385-750 nm), were used at different doses (4.8-38.4 J/cm(2)) to determine the viability, proliferation, and actin cytoskeleton in vitro by flow cytometry and confocal microscopy. Tumorogenic properties of cells were studied in vivo after transplantation in C3HA mice. RESULTS Polychromatic light of a wide range of doses did not change the viability and proliferation of cells. After transplantation of cells irradiated with VIS-IR light (4.8 and 9.6 J/cm(2)) and VIS light (38.4 J/cm(2)) the tumor volume was lower in the treated group than in the control group in vivo. Transplantability of the irradiated cells also decreased, whereas survival of tumor-bearing mice increased. Three cell populations with different cytoskeleton structure were identified. After irradiation, the reorganized part of the actin cytoskeleton changed its localization to the submembranous area. CONCLUSIONS A decrease of tumorigenicity in cells irradiated with polychromatic light used in non-damaging doses correlated with an increase in the number of cells with reorganized actin in the submembranous area. The results of the present study argue in favor of the oncological safety of polychromatic VIS-IR light (480-3400 nm).
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Affiliation(s)
- Nickolay A Knyazev
- 1 Nanotechnology Research and Education Centre , Russian Academy of Sciences, Saint-Petersburg, Russia
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Klimenko VV, Bogdanov AA, Knyazev NA, Rusanov AA, Dubina MV. Different photodynamic effect between continuous wave and pulsed laser irradiation modes in k562 cells in vitro. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/541/1/012040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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