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Bobik TV, Simonova MA, Rushkevich NU, Kostin NN, Skryabin GA, Knorre VD, Schulga AA, Konovalova EV, Proshkina GM, Gabibov AG, Deev SM. Immunoliposomes As a Promising Antiviral Agent against SARS-CoV-2. DOKL BIOCHEM BIOPHYS 2024; 514:6-10. [PMID: 38189883 PMCID: PMC11021331 DOI: 10.1134/s1607672923700618] [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] [Received: 09/24/2023] [Revised: 10/20/2023] [Accepted: 10/21/2023] [Indexed: 01/09/2024]
Abstract
According to the World Health Organization, as of January 3, 2020 to September 13, 2023, there were approximately 23 million confirmed cases of COVID-19 reported in the Russian Federation, about 400 thousand of which were fatal. Considering the high rate of mutation of the RNA-containing virus genome, which inevitably leads to the emergence of new infectious strains (Eris and Pyrola), the search for medicinal antiviral agents remains an urgent task. Moreover, taking into account the actively mutating receptor-binding domain, this task requires fundamentally new solutions. This study proposes a candidate immunoliposomal drug that targets the S protein of SARS-CoV-2 by the monoclonal neutralizing antibody P4A1 and ensures the penetration of a highly active ribonuclease into the virus-infected cell, which degrades, among cellular RNA, viral RNA too. We demonstrate a more than 40-fold increase in the neutralizing activity of the developed drug compared to the free monoclonal neutralizing antibody.
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Affiliation(s)
- T V Bobik
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.
| | - M A Simonova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - N U Rushkevich
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - N N Kostin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - G A Skryabin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - V D Knorre
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - A A Schulga
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - E V Konovalova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - G M Proshkina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - A G Gabibov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
- Moscow State University, Moscow, Russia
| | - S M Deev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
- National Research University Higher School of Economics, Moscow, Russia
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Shramova EI, Filimonova VP, Frolova AY, Pichkur EB, Fedotov VR, Konevega AL, Deyev SM, Proshkina GM. HER2-specific liposomes loaded with proteinaceous BRET pair as a promising tool for targeted self-excited photodynamic therapy. Eur J Pharm Biopharm 2023; 193:208-217. [PMID: 37956784 DOI: 10.1016/j.ejpb.2023.11.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 11/15/2023]
Abstract
Photodynamic therapy (PDT) for deep-seated tumors is still challenging due to the limited penetration of visible light through tissues. To resolve this limitation, systems based on bioluminescence resonance energy transfer (BRET), that do not require an external light source are proposed. Herein, for BRET-activated PDT we developed proteinaceous BRET-pair consisting of luciferase NanoLuc, which acts as energy donor upon addition of luciferase specific substrate furimazine, and phototoxic protein SOPP3 as a photosensitizer. We have shown that hybrid protein NanoLuc-SOPP3 is an excellent BRET pair with BRET ratio of 1.12. Targeted delivery of NanoLuc-SOPP3 BRET pair via tumor-specific small liposomes (∼100 nm) to tumors overexpressing the HER2-receptor (human epidermal growth factor receptor 2) was demonstrated in vitro and in vivo. The proposed BRET-activated system has been shown to significantly suppress tumor growth in a model of subcutaneous and, more importantly, deep-seated tumor model. Taking into account the in vivo efficiency of proposed BRET-activated system, we believe that it has great potential for depth-independent PDT and can significantly broaden the application of PDT in the clinic.
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Affiliation(s)
- Elena I Shramova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russian Academy of science, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Victoriya P Filimonova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russian Academy of science, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Anastasiya Yu Frolova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russian Academy of science, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Eugene B Pichkur
- Peter the Great St. Petersburg Polytechnic University, Politehnicheskaya 29, 195251 St. Petersburg, Russia
| | - Vlad R Fedotov
- Peter the Great St. Petersburg Polytechnic University, Politehnicheskaya 29, 195251 St. Petersburg, Russia
| | - Andrey L Konevega
- Peter the Great St. Petersburg Polytechnic University, Politehnicheskaya 29, 195251 St. Petersburg, Russia
| | - Sergey M Deyev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russian Academy of science, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia; "Biomarker" Research Laboratory, Institute of Fundamental Medicine and Biology, Kazan Federal University, 18 Kremlyovskaya St., Kazan 420008, Russia; Sechenov First Moscow State Medical University (Sechenov University), 119991, Moscow, Russia
| | - Galina M Proshkina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russian Academy of science, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia.
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Novoselova MV, Shramova EI, Sergeeva OV, Shcherbinina EY, Perevoschikov SV, Melnikov P, Griaznova OY, Sergeev IS, Konovalova EV, Schulga AA, Proshkina GM, Zatsepin TS, Deyev SM, Gorin DA. Polymer/magnetite carriers functionalized by HER2-DARPin: Avoiding lysosomes during internalization and controlled toxicity of doxorubicin by focused ultrasound induced release. Nanomedicine 2023; 47:102612. [PMID: 36243307 DOI: 10.1016/j.nano.2022.102612] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 09/08/2022] [Accepted: 09/25/2022] [Indexed: 11/05/2022]
Abstract
Nanomedicine has revolutionized the available treatment options during the last decade, but poor selectivity of targeted drug delivery and release is still poses a challenge. In this study, doxorubicin (DOX) and magnetite nanoparticles were encapsulated by freezing-induced loading, coated with polymeric shell bearing two bi-layers of polyarginine/dextran sulphate and finally modified with HER2-specific DARPin proteins. We demonstrated that the enhanced cellular uptake of these nanocarriers predominantly occurs by SKOV-3 (HER2+) cells, in comparison to CHO (HER2-) cells, together with the controlled DOX release using low intensity focused ultrasound (LIFU). In addition, a good ability of DARPin+ capsules to accumulate in the tumor and the possibility of combination therapy with LIFU were demonstrated. A relatively high sensitivity of the obtained nanocarriers to LIFU and their preferential interactions with mitochondria in cancer cells make these carriers promising candidates for cancer treatment, including novel approaches to overcome drug resistance.
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Affiliation(s)
- M V Novoselova
- Skolkovo Institute of Science and Technology, Moscow 121205, Russia.
| | - E I Shramova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow 117997, Russia
| | - O V Sergeeva
- Skolkovo Institute of Science and Technology, Moscow 121205, Russia.
| | - E Y Shcherbinina
- Skolkovo Institute of Science and Technology, Moscow 121205, Russia.
| | | | - P Melnikov
- V. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow 119034, Russia
| | - O Yu Griaznova
- Skolkovo Institute of Science and Technology, Moscow 121205, Russia; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow 117997, Russia.
| | - I S Sergeev
- Skolkovo Institute of Science and Technology, Moscow 121205, Russia
| | - E V Konovalova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow 117997, Russia
| | - A A Schulga
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow 117997, Russia
| | - G M Proshkina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow 117997, Russia.
| | - T S Zatsepin
- Lomonosov Moscow State University, Moscow 119991, Russia.
| | - S M Deyev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow 117997, Russia
| | - D A Gorin
- Skolkovo Institute of Science and Technology, Moscow 121205, Russia.
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4
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Shramova EI, Chumakov SP, Shipunova VO, Ryabova AV, Telegin GB, Kabashin AV, Deyev SM, Proshkina GM. Genetically encoded BRET-activated photodynamic therapy for the treatment of deep-seated tumors. Light Sci Appl 2022; 11:38. [PMID: 35190528 PMCID: PMC8861062 DOI: 10.1038/s41377-022-00729-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 01/17/2022] [Accepted: 01/31/2022] [Indexed: 05/05/2023]
Abstract
Photodynamic therapy (PDT) is one of the most appealing photonic modalities for cancer treatment based on anticancer activity of light-induced photosensitizer-mediated reactive oxygen species (ROS), but a limited depth of light penetration into tissues does not make possible the treatment of deep-seated neoplasms and thus complicates its widespread clinical adoption. Here, we introduce the concept of genetically encoded bioluminescence resonance energy transfer (BRET)-activated PDT, which combines an internal light source and a photosensitizer (PS) in a single-genetic construct, which can be delivered to tumors seated at virtually unlimited depth and then triggered by the injection of a substrate to initiate their treatment. To illustrate the concept, we engineered genetic NanoLuc-miniSOG BRET pair, combining NanoLuc luciferase flashlight and phototoxic flavoprotein miniSOG, which generates ROS under luciferase-substrate injection. We prove the concept feasibility in mice bearing NanoLuc-miniSOG expressing tumor, followed by its elimination under the luciferase-substrate administration. Then, we demonstrate a targeted delivery of NanoLuc-miniSOG gene, via tumor-specific lentiviral particles, into a tumor, followed by its successful elimination, with tumor-growth inhibition (TGI) coefficient exceeding 67%, which confirms a great therapeutic potential of the proposed concept. In conclusion, this study provides proof-of-concept for deep-tissue "photodynamic" therapy without external light source that can be considered as an alternative for traditional PDT.
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Affiliation(s)
- Elena I Shramova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow, 117997, Russia
| | - Stepan P Chumakov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow, 117997, Russia
| | - Victoria O Shipunova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow, 117997, Russia
- MEPhI (Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe shosse, Moscow, 115409, Russia
| | - Anastasiya V Ryabova
- Prokhorov General Physics Institute, Russian Academy of Sciences, Vavilova, 38, Moscow, 119991, Russia
| | - Georgij B Telegin
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Prospect Nauki 6, Pushchino, 142290, Russia
| | - Andrei V Kabashin
- MEPhI (Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe shosse, Moscow, 115409, Russia
- Aix Marseille University, CNRS, LP3, 163 Ave. De Luminy, Case 917, 13288, Marseille, France
| | - Sergey M Deyev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow, 117997, Russia.
- MEPhI (Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe shosse, Moscow, 115409, Russia.
| | - Galina M Proshkina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow, 117997, Russia.
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5
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Shramova EI, Shilova MV, Ryabova AV, Dzhalilova DS, Zolotova NA, Telegin GB, Deyev SM, Proshkina GM. Barnase*Barstar-guided two-step targeting approach for drug delivery to tumor cells in vivo. J Control Release 2021; 340:200-208. [PMID: 34740723 DOI: 10.1016/j.jconrel.2021.11.001] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/13/2021] [Accepted: 11/01/2021] [Indexed: 12/11/2022]
Abstract
For precise ligation of a targeting and cytotoxic moiety, the use of Barnase-Barstar pair as a molecular glue is proposed for the first time. Targeting was mediated through the use of a scaffold protein DARPin_9-29 specific for the human epidermal receptor 2 (HER2) antigen that is highly expressed on some types of cancer and Barnase*Barstar native bacterial proteins interacted with each other with Kd 10-14 M. The approach proposed consists of prelabeling a target tumor with hybrid protein DARPin-Barnase prior to administration of cytotoxic component-loaded liposomes that have Barstar covalently attached to their surface. Based on in vivo bioimaging we have proven that DARPin-based Barnase*Barstar-mediated pretargeting possesses precise tumor-targeting capability as well as antitumor activity leading to apparent tumor-growth inhibition of primary tumors and distant metastases in experimental animals. The results obtained indicate that the new system combining DARPin and Barnase*Barstar can be useful both for the drug development and for monitoring the response to treatment in vivo in preclinical studies.
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Affiliation(s)
- E I Shramova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - M V Shilova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - A V Ryabova
- Prokhorov General Physics Institute, Russian Academy of Sciences, Vavilova, 38, 119991 Moscow, Russia.
| | - D S Dzhalilova
- Department of Immunomorphology of Inflammation, Research Institute of Human Morphology, Tsyurupi str 3, 117418 Moscow, Russia
| | - N A Zolotova
- Department of Immunomorphology of Inflammation, Research Institute of Human Morphology, Tsyurupi str 3, 117418 Moscow, Russia
| | - G B Telegin
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Prospect Nauki 6, Pushchino 142290, Russia.
| | - S M Deyev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia; Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634 050 Tomsk, Russia; MEPhI (Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe shosse, Moscow 115409, Russia
| | - G M Proshkina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia.
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6
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Proshkina GM, Shramova EI, Shilova MV, Zelepukin IV, Shipunova VO, Ryabova AV, Deyev SM, Kotlyar AB. DARPin_9-29-Targeted Gold Nanorods Selectively Suppress HER2-Positive Tumor Growth in Mice. Cancers (Basel) 2021; 13:cancers13205235. [PMID: 34680384 PMCID: PMC8534065 DOI: 10.3390/cancers13205235] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 08/30/2021] [Revised: 09/21/2021] [Accepted: 10/15/2021] [Indexed: 12/14/2022] Open
Abstract
Simple Summary Breast cancer is one of the main causes of cancer-related death in women all around the world. The disease becomes largely incurable and lethal after metastasis to distant organs. High level of HER2, a tyrosine kinase receptor, is associated with more aggressive clinical behavior and poor prognosis for breast cancer patients. In this paper, we developed a novel nano-biomaterial for selective photothermal therapy of HER2-positive breast cancers. We demonstrate that bovine serum albumin (BSA)-coated mini gold nanorods (GNRs) chemically conjugated with a HER2-specific designed ankyrin repeat protein, DARPin_9-29, selectively accumulate in HER2-positive xenograft tumors in mice and lead to a strong reduction in the tumor size when being illuminated with near-infrared light. Abstract Near-infrared phototherapy has great therapeutic potential for cancer treatment. However, for efficient application, in vivo photothermal agents should demonstrate excellent stability in blood and targeted delivery to pathological tissue. Here, we demonstrated that stable bovine serum albumin-coated gold mini nanorods conjugated to a HER2-specific designed ankyrin repeat protein, DARPin_9-29, selectively accumulate in HER2-positive xenograft tumors in mice and lead to a strong reduction in the tumor size when being illuminated with near-infrared light. The results pave the way for the development of novel DARPin-based targeted photothermal therapy of cancer.
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Affiliation(s)
- Galina M. Proshkina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya St, 16/10, 117997 Moscow, Russia; (G.M.P.); (E.I.S.); (M.V.S.); (I.V.Z.); (V.O.S.)
| | - Elena I. Shramova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya St, 16/10, 117997 Moscow, Russia; (G.M.P.); (E.I.S.); (M.V.S.); (I.V.Z.); (V.O.S.)
| | - Marya V. Shilova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya St, 16/10, 117997 Moscow, Russia; (G.M.P.); (E.I.S.); (M.V.S.); (I.V.Z.); (V.O.S.)
| | - Ivan V. Zelepukin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya St, 16/10, 117997 Moscow, Russia; (G.M.P.); (E.I.S.); (M.V.S.); (I.V.Z.); (V.O.S.)
- MEPhI (Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe Shosse, 115409 Moscow, Russia
| | - Victoria O. Shipunova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya St, 16/10, 117997 Moscow, Russia; (G.M.P.); (E.I.S.); (M.V.S.); (I.V.Z.); (V.O.S.)
- MEPhI (Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe Shosse, 115409 Moscow, Russia
| | - Anastasia V. Ryabova
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilova St, 119991 Moscow, Russia;
| | - Sergey M. Deyev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya St, 16/10, 117997 Moscow, Russia; (G.M.P.); (E.I.S.); (M.V.S.); (I.V.Z.); (V.O.S.)
- MEPhI (Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe Shosse, 115409 Moscow, Russia
- Correspondence: or (S.M.D.); (A.B.K.)
| | - Alexander B. Kotlyar
- Department of Biochemistry and Molecular Biology, George S. Wise Faculty of Life Sciences and the Center of Nanoscience and Nanotechnology, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel
- Correspondence: or (S.M.D.); (A.B.K.)
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7
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Pankratov AA, Nemtsova ER, Plyutinskaya AD, Vorontsova MS, Chuvilin DY, Egorova BV, Kokov KV, Deev SM, Lebedenko EN, Proshkina GM, Shul'ga AA, Golovachenko VA, Shegai PV, Kaprin AD. Specific Cytotoxicity of Targeted 177Lu and 212Pb-Based Radiopharmaceuticals. Bull Exp Biol Med 2021; 171:627-632. [PMID: 34626281 DOI: 10.1007/s10517-021-05283-4] [Citation(s) in RCA: 1] [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] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Indexed: 11/26/2022]
Abstract
Two radiopharmaceutical preparations were developed on the basis of artificial targeted polypeptide ZHER2 specific to HER2/neu tumor marker and radionuclides 177Lu (ZHER2-HSA-chelator-177Lu) or 212Pb (ZHER2-HSA-chelator-212Pb). The objective was to evaluate in vitro the cytotoxic activity of the targeted radiopharmaceuticals using two cultured human breast cancer cell lines with different expression of HER2/neu: SK-BR3 (high expression of HER2/neu) and MCF-7 (low expression of HER2/neu). It was shown that the cytotoxic effect of both preparations was significantly higher against the SK-BR-3 cells. The cytotoxicity correlated with the incubation period (it was higher after 72 h than after 24 h) and was significantly more pronounced in comparison with activity of radionuclide salts without a specific ligand. In vivo preclinical study of these pharmaceuticals seems to be very promising in animals with xenografted tumors showing high expression of HER2/neu marker.
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Affiliation(s)
- A A Pankratov
- P. A. Hertsen Moscow Oncology Research Institute - Affiliated Branch of National Medical Research Radiological Centre, Ministry of Health of the Russian Federation, Moscow, Russia
| | - E R Nemtsova
- P. A. Hertsen Moscow Oncology Research Institute - Affiliated Branch of National Medical Research Radiological Centre, Ministry of Health of the Russian Federation, Moscow, Russia.
| | - A D Plyutinskaya
- P. A. Hertsen Moscow Oncology Research Institute - Affiliated Branch of National Medical Research Radiological Centre, Ministry of Health of the Russian Federation, Moscow, Russia
| | - M S Vorontsova
- P. A. Hertsen Moscow Oncology Research Institute - Affiliated Branch of National Medical Research Radiological Centre, Ministry of Health of the Russian Federation, Moscow, Russia
| | - D Yu Chuvilin
- National Research Center Kurchatov Institute, Moscow, Russia
| | - B V Egorova
- National Research Center Kurchatov Institute, Moscow, Russia
| | - K V Kokov
- National Research Center Kurchatov Institute, Moscow, Russia
| | - S M Deev
- M. M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
- Research School of Chemistry and Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, Russia
| | - E N Lebedenko
- M. M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
- Research School of Chemistry and Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, Russia
| | - G M Proshkina
- M. M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - A A Shul'ga
- M. M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
- Research School of Chemistry and Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, Russia
| | | | - P V Shegai
- P. A. Hertsen Moscow Oncology Research Institute - Affiliated Branch of National Medical Research Radiological Centre, Ministry of Health of the Russian Federation, Moscow, Russia
| | - A D Kaprin
- P. A. Hertsen Moscow Oncology Research Institute - Affiliated Branch of National Medical Research Radiological Centre, Ministry of Health of the Russian Federation, Moscow, Russia
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8
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Shipunova VO, Kolesnikova OA, Kotelnikova PA, Soloviev VD, Popov AA, Proshkina GM, Nikitin MP, Deyev SM. Comparative Evaluation of Engineered Polypeptide Scaffolds in HER2-Targeting Magnetic Nanocarrier Delivery. ACS Omega 2021; 6:16000-16008. [PMID: 34179645 PMCID: PMC8223436 DOI: 10.1021/acsomega.1c01811] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 05/31/2021] [Indexed: 06/01/2023]
Abstract
Targeted drug delivery is one of the most intriguing and challenging issues in modern biomedicine. For active targeting, full-size IgG molecules (150 kDa) are usually used. Recent studies have revealed that small artificial polypeptide scaffolds such as DARPins (14 kDa) and affibodies (8 kDa) are much more promising tools for drug delivery due to their small size, artificial nature, low immunogenicity, and many other properties. However, there is no comparative information on the targeting abilities of scaffold polypeptides, which should be taken into account when developing drug delivery systems (DDSs). The present work is the first comprehensive study on the comparison of the effectiveness of different HER2-targeting proteins within the architecture of nanoparticles. Namely, we synthesized trimodal nanoparticles: magnetic, fluorescent, and directed toward HER2 oncomarker on cancer cells. The magnetic particles (MPs) were covalently modified with (i) full-size IgG, 150 kDa, (ii) DARPin_G3, 14 kDa, and (iii) affibody ZHER2:342, 8 kDa. We showed that the number of DARPin_G3 and affibody ZHER2:342 molecules conjugated to the nanoparticle surface are 10 and 40 times higher, respectively, than the corresponding value for trastuzumab. Using the methods of magnetic particle quantification (MPQ)-cytometry and confocal microscopy, we showed that all types of the obtained magnetic conjugates specifically labeled HER2-overexpressing cells. Namely, we demonstrated that particle binding to HER2-positive cells is 1113 ± 39 fg/cell for MP*trastuzumab, 1431 ± 186 fg/cell for MP*ZHER2:342, and 625±21 fg/cell for MP*DARPin_G3, which are 2.77, 2.75, and 2.30 times higher than the corresponding values for control HER2-negative cells. Thus, we showed that the smallest HER2-recognizing polypeptide affibody ZHER2:342 is more effective in terms of specificity and selectivity in nanoparticle-mediated cell labeling.
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Affiliation(s)
- Victoria O. Shipunova
- Shemyakin−Ovchinnikov
Institute of Bioorganic Chemistry, Russian
Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
- Moscow
Institute of Physics and Technology, 9 Institutskiy per., Dolgoprudny 141701, Russia
- MEPhI
(Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe Shosse, Moscow 115409, Russia
- Sirius
University of Science and Technology, 1 Olympic Avenue, Sochi 354340, Russia
| | - Olga A. Kolesnikova
- Shemyakin−Ovchinnikov
Institute of Bioorganic Chemistry, Russian
Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Polina A. Kotelnikova
- Shemyakin−Ovchinnikov
Institute of Bioorganic Chemistry, Russian
Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Vladislav D. Soloviev
- Shemyakin−Ovchinnikov
Institute of Bioorganic Chemistry, Russian
Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
- Sirius
University of Science and Technology, 1 Olympic Avenue, Sochi 354340, Russia
| | - Anton A. Popov
- MEPhI
(Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe Shosse, Moscow 115409, Russia
| | - Galina M. Proshkina
- Shemyakin−Ovchinnikov
Institute of Bioorganic Chemistry, Russian
Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Maxim P. Nikitin
- Shemyakin−Ovchinnikov
Institute of Bioorganic Chemistry, Russian
Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
- Moscow
Institute of Physics and Technology, 9 Institutskiy per., Dolgoprudny 141701, Russia
- Sirius
University of Science and Technology, 1 Olympic Avenue, Sochi 354340, Russia
| | - Sergey M. Deyev
- Shemyakin−Ovchinnikov
Institute of Bioorganic Chemistry, Russian
Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
- MEPhI
(Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe Shosse, Moscow 115409, Russia
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9
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Shipunova VO, Komedchikova EN, Kotelnikova PA, Zelepukin IV, Schulga AA, Proshkina GM, Shramova EI, Kutscher HL, Telegin GB, Kabashin AV, Prasad PN, Deyev SM. Dual Regioselective Targeting the Same Receptor in Nanoparticle-Mediated Combination Immuno/Chemotherapy for Enhanced Image-Guided Cancer Treatment. ACS Nano 2020; 14:12781-12795. [PMID: 32935975 DOI: 10.1021/acsnano.0c03421] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
When combined with immunotherapy, image-guided targeted delivery of chemotherapeutic agents is a promising direction for combination cancer theranostics, but this approach has so far produced only limited success due to a lack of molecular targets on the cell surface and low therapeutic index of conventional chemotherapy drugs. Here, we demonstrate a synergistic strategy of combination immuno/chemotherapy in conditions of dual regioselective targeting, implying vectoring of two distinct binding sites of a single oncomarker (here, HER2) with theranostic compounds having a different mechanism of action. We use: (i) PLGA nanoformulation, loaded with an imaging diagnostic fluorescent dye (Nile Red) and a chemotherapeutic drug (doxorubicin), and functionalized with affibody ZHER2:342 (8 kDa); (ii) bifunctional genetically engineered DARP-LoPE (42 kDa) immunotoxin comprising of a low-immunogenic modification of therapeutic Pseudomonas exotoxin A (LoPE) and a scaffold targeting protein, DARPin9.29 (14 kDa). According to the proposed strategy, the first chemotherapeutic nanoagent is targeted by the affibody to subdomain III and IV of HER2 with 60-fold specificity compared with nontargeted particles, while the second immunotoxin is effectively targeted by DARPin molecule to subdomain I of HER2. We demonstrate that this dual targeting strategy can enhance anticancer therapy of HER2-positive cells with a very strong synergy, which made possible 1000-fold decrease of effective drug concentration in vitro and a significant enhancement of HER2 cancer therapy compared to monotherapy in vivo. Moreover, this therapeutic combination prevented the appearance of secondary tumor nodes. Thus, the suggested synergistic strategy utilizing dual targeting of the same oncomarker could give rise to efficient methods for aggressive tumors treatment.
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Affiliation(s)
- Victoria O Shipunova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
- MEPhI (Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe Shosse, Moscow 115409, Russia
| | - Elena N Komedchikova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Polina A Kotelnikova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Ivan V Zelepukin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
- MEPhI (Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe Shosse, Moscow 115409, Russia
| | - Alexey A Schulga
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Galina M Proshkina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Elena I Shramova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Hilliard L Kutscher
- Institute for Lasers, Photonics and Biophotonics, University at Buffalo, 428 Natural Science Complex, Buffalo, New York 14260-3000, United States
- Department of Medicine, University at Buffalo, 875 Ellicott Street, Buffalo, New York 14203, United States
- Department of Anesthesiology, University at Buffalo, 77 Goodell Street, Suite 550, Buffalo, New York 14203, United States
| | - Georgij B Telegin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
| | - Andrei V Kabashin
- MEPhI (Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe Shosse, Moscow 115409, Russia
- Aix Marseille University, CNRS, LP3, Campus de Luminy-case 917, 13288, Marseille Cedex 9, France
| | - Paras N Prasad
- MEPhI (Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe Shosse, Moscow 115409, Russia
- Institute for Lasers, Photonics and Biophotonics, University at Buffalo, 428 Natural Science Complex, Buffalo, New York 14260-3000, United States
| | - Sergey M Deyev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya Street, Moscow 117997, Russia
- MEPhI (Moscow Engineering Physics Institute), Institute of Engineering Physics for Biomedicine (PhysBio), 31 Kashirskoe Shosse, Moscow 115409, Russia
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10
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Proshkina GM, Kiseleva DV, Shilova ON, Ryabova AV, Shramova EI, Stremovskiy OA, Deyev SM. [Bifunctional Toxin DARP-LoPE Based on the HER2-Specific Innovative Module of a Non-Immunoglobulin Scaffold as a Promising Agent for Theranostics]. Mol Biol (Mosk) 2017; 51:997-1007. [PMID: 29271963 DOI: 10.7868/s0026898417060118] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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] [Received: 04/06/2017] [Accepted: 07/07/2017] [Indexed: 11/23/2022]
Abstract
We have generated and characterized HER2-specific targeted toxin based on the low-immunogenic variant of Pseudomonas exotoxin A (LoPE), in which most of the human immunodominant B-cell epitopes have been inactivated. Nonimmunoglobulin DARPin-based HER2-specific protein was used as a targeting module for toxin delivery to the cellular target. Using confocal microscopy, it has been found that both domains in this hybrid toxin retained their functionality, i.e., the specific interaction with HER2 receptor, as well as the internalization and effective transport to ER typical of the wild-type Pseudomonas exotoxin A. The HER2-dependent cytotoxic effect correlated with receptor expression level at the cell surface, as shown in vitro using cell lines with different levels of HER2 expression. Due to the very high selective cytotoxicity against HER2-positive human tumor cells, as well as expected low immunogenicity, we believe that this new targeted toxin may be promising for future in vivo studies as a therapeutic agent for HER2-positive tumors.
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Affiliation(s)
- G M Proshkina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997 Russia
| | - D V Kiseleva
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997 Russia
- Department of BiologyMoscow State University, Moscow, 119234 Russia
| | - O N Shilova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997 Russia
| | - A V Ryabova
- Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, 119991 Russia
| | - E I Shramova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997 Russia
| | - O A Stremovskiy
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997 Russia
| | - S M Deyev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997 Russia
- National Research Tomsk Polytechnic University, Tomsk, 634050 Russia
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11
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Shilova ON, Proshkina GM, Ryabova AV, Deyev SM, Petrov RV. Cytotoxicity of targeted HER2-specific phototoxins based on flavoprotein miniSOG is determined by the rate of their internalization. DOKL BIOCHEM BIOPHYS 2017; 475:256-258. [PMID: 28864891 DOI: 10.1134/s1607672917040044] [Citation(s) in RCA: 3] [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] [Received: 03/29/2017] [Indexed: 11/23/2022]
Abstract
The concept of targeted therapy implies the development of bifunctional agents complementing the therapeutic module with a targeting one. A promising target for the delivery of imaging and/or toxic modules is the HER2 (ErbB2) receptor. Earlier, we have functionally characterized the targeted photosensitizers 4D5scFv-miniSOG and DARPin-miniSOG, causing the death of HER2-overexpressing cells when irradiated with blue light. However, the cytotoxicity of targeted toxins 4D5scFv-miniSOG and DARPin-miniSOG (both having functionally active targeted and cytotoxic modules in recombinant proteins) against human breast adenocarcinoma cells differs 5 times. The study of the dynamics of internalization of 4D5scFv-miniSOG and DARPin-miniSOG proteins in the complex with HER2 in this work showed that the rate of internalization contributes most significantly to the toxicity of these photosensitizers, because it determines the duration of the presence of the phototoxin in the lipid bilayer of the cell membrane, where its damaging effect is maximum.
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Affiliation(s)
- O N Shilova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia.
| | - G M Proshkina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
| | - A V Ryabova
- Prokhorov Institute of General Physics, Russian Academy of Sciences, Moscow, 119991, Russia
| | - S M Deyev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
| | - R V Petrov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
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12
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Proshkina GM, Shilova ON, Ryabova AV, Stremovskiy OA, Deyev SM. A new anticancer toxin based on HER2/neu-specific DARPin and photoactive flavoprotein miniSOG. Biochimie 2015; 118:116-22. [PMID: 26319592 DOI: 10.1016/j.biochi.2015.08.013] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [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: 06/02/2015] [Accepted: 08/18/2015] [Indexed: 12/25/2022]
Abstract
Cytotoxic effects of a new targeted phototoxin DARPin-miniSOG and mechanism of its action were investigated in vitro. It was determined that DARPin-miniSOG causes light-induced death of HER2/neu-positive cancer cells (IC50 0.8 μM). Treatment of the cells with DARPin-miniSOG in the presence of ascorbic acid eliminated the light-induced cytotoxic action of the protein. This observation suggests the involvement of oxidative stress in the mechanism of the phototoxin action. DNA fragmentation analysis, caspase-3 activity assay and PI-staining of HER2/neu-positive cancer cells treated with DARPin-miniSOG indicated that phototoxin induces necrotic cell death under blue light illumination. Co-localization analysis showed that DARPin-miniSOG accumulates mostly in endosomes and lysosomes.
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Affiliation(s)
- G M Proshkina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya St, 16/10, Moscow 117997, Russia
| | - O N Shilova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya St, 16/10, Moscow 117997, Russia
| | - A V Ryabova
- Prokhorov General Physics Institute, Russian Academy of Sciences, Vavilova St, 38, 119991 Moscow, Russia; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe Highway, 31, Moscow 115409, Russia
| | - O A Stremovskiy
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya St, 16/10, Moscow 117997, Russia
| | - S M Deyev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya St, 16/10, Moscow 117997, Russia; Research Institute of Applied and Fundamental Medicine, Nizhny Novgorod State Medical Academy, Nizhny Novgorod, Russia.
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13
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Mironova KE, Chernykh ON, Ryabova AV, Stremovskiy OA, Proshkina GM, Deyev SM. Highly specific hybrid protein DARPin-mCherry for fluorescent visualization of cells overexpressing tumor marker HER2/neu. Biochemistry (Mosc) 2014; 79:1391-6. [PMID: 25716734 DOI: 10.1134/s0006297914120141] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Here we propose a simple and reliable approach for detection of the tumor marker HER2/neu using the targeting fluorescent hybrid protein DARPin-mCherry. As a targeting module, we used DARPin9-29, which is a member of a novel class of non-immunoglobulin targeting proteins that can highly selectively recognize the extracellular domain of the epidermal growth factor receptor HER2/neu. The red fluorescent protein mCherry was used as the detecting module. The hybrid protein DARPin-mCherry was prepared with high yield in a bacterial expression system and purified in one step by affinity chromatography. The purified protein is not prone to aggregation. The specificity of DARPin-mCherry binding with the HER2/neu tumor marker was demonstrated using confocal microscopy, flow cytofluorimetry, and surface plasmon resonance. The dissociation constant of the DARPin-mCherry protein complex with the HER2/neu receptor determined by surface plasmon resonance was calculated to be 4.5 nM. These characteristics of the hybrid protein DARPin-mCherry suggest it as a promising agent for immunofluorescent assay and an attractive alternative to antibodies and their fragments labeled with fluorescent dyes that are now used for this purpose.
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Affiliation(s)
- K E Mironova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia.
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14
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Mironova KE, Proshkina GM, Ryabova AV, Stremovskiy OA, Lukyanov SA, Petrov RV, Deyev SM. Genetically encoded immunophotosensitizer 4D5scFv-miniSOG is a highly selective agent for targeted photokilling of tumor cells in vitro. Am J Cancer Res 2013; 3:831-40. [PMID: 24312153 PMCID: PMC3841334 DOI: 10.7150/thno.6715] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 08/09/2013] [Indexed: 01/08/2023] Open
Abstract
Tumor-targeted delivery of cytotoxins presents considerable advantages over their passive transport. Chemical conjugation of cytotoxic module to antibody is limited due to insufficient reproducibility of synthesis, and recombinant immunotoxins are aimed to overcome this disadvantage. We obtained genetically encoded immunophotosensitizer 4D5scFv-miniSOG and evaluated its photocytotoxic effect in vitro. A single-chain variable fragment (scFv) of humanized 4D5 antibody was used as a targeting vehicle for selective recognition of the extracellular domain of human epidermal growth factor receptor 2 (HER2/neu) overexpressed in many human carcinomas. As a phototoxic module we used a recently described photoactivated fluorescent flavoprotein miniSOG. We found that recombinant protein 4D5scFv-miniSOG exerts a highly specific photo-induced cytotoxic effect on HER2/neu-positive human breast adenocarcinoma SK-BR-3 cells (IC50= 160 nM). We demonstrated that the 4D5scFv-miniSOG specifically binds to HER2-positive cells and internalizes via receptor-mediated endocytosis. Co-treatment of breast cancer cells with 4D5scFv-miniSOG and Taxol or junction opener protein JO-1 produced remarkable additive effects.
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15
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Proshkin SA, Shematorova EK, Souslova EA, Proshkina GM, Shpakovski GV. A minor isoform of the human RNA polymerase II subunit hRPB11 (POLR2J) interacts with several components of the translation initiation factor eIF3. Biochemistry (Mosc) 2012; 76:976-80. [PMID: 22022972 DOI: 10.1134/s0006297911080141] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Using the yeast two-hybrid (YTH) system we have uncovered interaction of the hRPB11cα minor isoform of Homo sapiens RNA polymerase II hRPB11 (POLR2J) subunit with three different subunits of the human translation initiation factor eIF3 (hEIF3): eIF3a, eIF3i, and eIF3m. One variant of eIF3m identified in the study is the product of translation of alternatively spliced mRNA. We have named a novel isoform of this subunit eIF3mβ. By means of the YTH system we also have shown that the new eIF3mβ isoform interacts with the eIF3a subunit. Whereas previously described subunit eIF3mα (GA17) has clear cytoplasmic localization, the novel eIF3mβ isoform is detected predominantly in the cell nucleus. The discovered interactions of the hRPB11cα isoform with several hEIF3 subunits demonstrate a new type coordination between transcription and the following (downstream) stages of gene expression (such as mRNA transport from nucleus to the active ribosomes in cytoplasm) in Homo sapiens and point out the possibility of existence of nuclear hEIF3 subcomplexes.
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Affiliation(s)
- S A Proshkin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
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16
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Proshkina GM, Shpakovskiĭ GV. [The functional interaction of an RNA polymerase II Rpb11 subunit with the Med18 subunit (Srb5) of the Saccharomyces cerevisiae mediator complex]. Bioorg Khim 2010; 35:572-6. [PMID: 19928061 DOI: 10.1134/s1068162009040153] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The SRB5 gene encoding the Med18 (Srb5) subunit of the mediator complex of the Saccharomyces cerevisiae transcription apparatus was identified in the C-terminal region of the yeast RNA polymerase II Rpb11 subunit as a multicopy suppressor of the Leu111Ala (L111A) point mutation. Thus, the functional interaction between one of the mediator components and the core of the major transcription enzyme was first shown. It is also essential that the suppressed point mutation was located in the short C-terminal region of the Rpb11subunit, which plays an important role for the evolution of the eukaryotic transcription apparatus, as was demonstrated in our previous studies.
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17
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Proshkina GM, Shematorova EK, Proshkin SA, Zaros C, Thuriaux P, Shpakovski GV. Ancient origin, functional conservation and fast evolution of DNA-dependent RNA polymerase III. Nucleic Acids Res 2006; 34:3615-24. [PMID: 16877568 PMCID: PMC1540719 DOI: 10.1093/nar/gkl421] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
RNA polymerase III contains seventeen subunits in yeasts (Saccharomyces cerevisiae and Schizosaccharomyces pombe) and in human cells. Twelve of them are akin to the core RNA polymerase I or II. The five other are RNA polymerase III-specific and form the functionally distinct groups Rpc31-Rpc34-Rpc82 and Rpc37-Rpc53. Currently sequenced eukaryotic genomes revealed significant homology to these seventeen subunits in Fungi, Animals, Plants and Amoebozoans. Except for subunit Rpc31, this also extended to the much more distantly related genomes of Alveolates and Excavates, indicating that the complex subunit organization of RNA polymerase III emerged at a very early stage of eukaryotic evolution. The Sch.pombe subunits were expressed in S.cerevisiae null mutants and tested for growth. Ten core subunits showed heterospecific complementation, but the two largest catalytic subunits (Rpc1 and Rpc2) and all five RNA polymerase III-specific subunits (Rpc82, Rpc53, Rpc37, Rpc34 and Rpc31) were non-functional. Three highly conserved RNA polymerase III-specific domains were found in the twelve-subunit core structure. They correspond to the Rpc17-Rpc25 dimer, involved in transcription initiation, to an N-terminal domain of the largest subunit Rpc1 important to anchor Rpc31, Rpc34 and Rpc82, and to a C-terminal domain of Rpc1 that presumably holds Rpc37, Rpc53 and their Rpc11 partner.
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Affiliation(s)
| | | | | | - Cécile Zaros
- Laboratoire de Physiogénomique, Service de Biochimie & Génétique MoléculaireBâtiment 144, CEA/Saclay, F-91191 Gif-sur-Yvette, cedex, France
| | - Pierre Thuriaux
- Laboratoire de Physiogénomique, Service de Biochimie & Génétique MoléculaireBâtiment 144, CEA/Saclay, F-91191 Gif-sur-Yvette, cedex, France
- Correspondence may also be addressed to Pierre Thuriaux. Tel: 33 1 69 08 35 86; Fax: 33 1 69 08 47 12;
| | - George V. Shpakovski
- To whom correspondence should be addressed. Tel: +7 495 3306583; Fax: +7 495 3357103;
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