In Vitro Evaluation of a Specific Radiochemical Compound Based on 99mTc-labeled DARPinG3 for Radionuclide Imaging of Tumors Overexpressing Her-2/neu; AIP Conference Proceedings; Vol. 1882 : Physics of Cancer: Interdisciplinary Problems and Clinical Applications (PC IPCA’17)
| Parent link: | AIP Conference Proceedings Vol. 1882 : Physics of Cancer: Interdisciplinary Problems and Clinical Applications (PC IPCA’17).— 2017.— [020007, 4 p.] |
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| Altri autori: | , , , , , , , , , , |
| Riassunto: | Title screen It is still necessary to search for new informative diagnostic methods to detect malignant tumors with overexpression of Her-2/neu, which are characterized by the aggressive course of the disease, rapid rate of tumor growth and low rates of relapse-free and overall survival. In recent years, the radioisotope techniques for detection of specific tumor targets have been developing actively. Purpose: to develop a chemically stable radiochemical compound for the targeted imaging of cells overexpressing Her-2/neu. Material and methods: The study was performed using 2 cell lines .The human breast adenocarcinoma HER2-overexpressing cell line BT-474 was chosen to detect specific binding. As a control, HER2-negative human breast adenocarcinoma MCF-7 was used. The human breast adenocarcinoma BT-474 and MCF-7 cell lines were seeded in chamber-slides at the density of 35,000 cells/ml in trypsin-EDTA (PanEco) medium and grown overnight at 37°C. After that both cell lines were washed with Phosphate buffered saline (PBS) and distributed into test tubes to 1 ml (5 millions cells in each). After adding 100 [mu]l (70 MBq) studied complex of 99mTc-DPAH-DARPinG3 was incubated for 40 min at +4°C. Washing was performed three times with buffer PBS and 5% Bovine Serum Albumin (BSA). The characteristics of the binding specificity of the test set with the HER-2/neu receptor were determined by direct radiometric and planar scintigraphy. Nonparametric Mann-Whitney test was used to assess the differences in the quantitative characteristics between groups. Results: The output of the labeled complex was more than 91%, with a radiochemical purity of more than 94%. When carrying out a visual scintigraphic assessment much greater intensity accumulation of radiotracer was observed in the studied cell culture surface receptor overexpressing Her-2/neu. The results of direct radiometric also showed higher accumulation of the radiopharmaceutical in the adenocarcinoma cell line BT-474 human breast cancer overexpressing Her-2/neu compared to the control group. Conclusion: The preclinical studies demonstrated a high in vitro stability of the study compound, as well as its accumulation in the cell group overexpressing Her-2/neu. Режим доступа: по договору с организацией-держателем ресурса |
| Lingua: | inglese |
| Pubblicazione: |
2017
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| Soggetti: | |
| Accesso online: | https://doi.org/10.1063/1.5001586 http://earchive.tpu.ru/handle/11683/46894 |
| Natura: | Elettronico Capitolo di libro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=657720 |
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| 200 | 1 | |a In Vitro Evaluation of a Specific Radiochemical Compound Based on 99mTc-labeled DARPinG3 for Radionuclide Imaging of Tumors Overexpressing Her-2/neu |f O. D. Bragina, M. S. Larkina, E. S. Stasyuk (Stasiuk) [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 12 tit.] | ||
| 330 | |a It is still necessary to search for new informative diagnostic methods to detect malignant tumors with overexpression of Her-2/neu, which are characterized by the aggressive course of the disease, rapid rate of tumor growth and low rates of relapse-free and overall survival. In recent years, the radioisotope techniques for detection of specific tumor targets have been developing actively. Purpose: to develop a chemically stable radiochemical compound for the targeted imaging of cells overexpressing Her-2/neu. Material and methods: The study was performed using 2 cell lines .The human breast adenocarcinoma HER2-overexpressing cell line BT-474 was chosen to detect specific binding. As a control, HER2-negative human breast adenocarcinoma MCF-7 was used. The human breast adenocarcinoma BT-474 and MCF-7 cell lines were seeded in chamber-slides at the density of 35,000 cells/ml in trypsin-EDTA (PanEco) medium and grown overnight at 37°C. After that both cell lines were washed with Phosphate buffered saline (PBS) and distributed into test tubes to 1 ml (5 millions cells in each). After adding 100 [mu]l (70 MBq) studied complex of 99mTc-DPAH-DARPinG3 was incubated for 40 min at +4°C. | ||
| 330 | |a Washing was performed three times with buffer PBS and 5% Bovine Serum Albumin (BSA). The characteristics of the binding specificity of the test set with the HER-2/neu receptor were determined by direct radiometric and planar scintigraphy. Nonparametric Mann-Whitney test was used to assess the differences in the quantitative characteristics between groups. Results: The output of the labeled complex was more than 91%, with a radiochemical purity of more than 94%. When carrying out a visual scintigraphic assessment much greater intensity accumulation of radiotracer was observed in the studied cell culture surface receptor overexpressing Her-2/neu. The results of direct radiometric also showed higher accumulation of the radiopharmaceutical in the adenocarcinoma cell line BT-474 human breast cancer overexpressing Her-2/neu compared to the control group. Conclusion: The preclinical studies demonstrated a high in vitro stability of the study compound, as well as its accumulation in the cell group overexpressing Her-2/neu. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | 0 | |0 (RuTPU)RU\TPU\network\4816 |t AIP Conference Proceedings | |
| 463 | 0 | |0 (RuTPU)RU\TPU\network\24427 |t Vol. 1882 : Physics of Cancer: Interdisciplinary Problems and Clinical Applications (PC IPCA’17) |o Proceedings of the International conference, 23–26 May 2017, Tomsk, Russia |f National Research Tomsk Polytechnic University (TPU) ; eds. E. Y. Gutmanas, O. B. Naimark, Yu. P. Sharkeev |v [020007, 4 p.] |d 2017 | |
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| 610 | 1 | |a радиофармацевтические препараты | |
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| 701 | 1 | |a Larkina |b M. S. |g Mariya Sergeevna |f 1984- |c pharmacist |c Professor; Senior Researcher of the Tomsk Polytechnic University, Doctor of Pharmaceutical Sciences |3 (RuTPU)RU\TPU\pers\46781 |9 22417 | |
| 701 | 1 | |a Stasyuk (Stasiuk) |b E. S. |c Specialist in the field of nuclear power engineering |c Researcher of Tomsk Polytechnic University, Candidate of technical sciences |f 1978- |g Elena Sergeyevna |3 (RuTPU)RU\TPU\pers\32656 |9 16555 | |
| 701 | 1 | |a Chernov |b V. I. |c specialist in the field of medical technology |c lead engineer of Tomsk Polytechnic University, doctor of medical sciences |f 1962- |g Vladimir Ivanovich |3 (RuTPU)RU\TPU\pers\34191 |9 17725 | |
| 701 | 1 | |a Zelchan (Zeltchan) |b R. V. |c specialist in the field of medical technology |c Researcher of the Tomsk Polytechnic University, Candidate of Medical Sciences |f 1984- |g Roman Vladimirovich |3 (RuTPU)RU\TPU\pers\34194 |9 17728 | |
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| 701 | 1 | |a Sinilkin |b I. G. |c specialist in the field of medical technology |c laboratory, Tomsk Polytechnic University, candidate of medical science |f 1972- |g Ivan Gennadjevich |3 (RuTPU)RU\TPU\pers\34189 |9 17723 | |
| 701 | 1 | |a Yusubov |b M. S. |c chemist |c Professor of Tomsk Polytechnic University, Doctor of chemical sciences |f 1961- |g Mekhman Suleiman-Ogly (Suleimanovich) |3 (RuTPU)RU\TPU\pers\31833 |9 15928 | |
| 701 | 1 | |a Skuridin |b V. S. |c Physicist, Specialist in the field of nuclear power engineering |c Professor of Tomsk Polytechnic University, Doctor of technical sciences |f 1946- |g Viktor Sergeyevich |3 (RuTPU)RU\TPU\pers\32655 |9 16554 | |
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