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/ T. N. Zamay [et al.] // Nucleic Acid Therape. - 2017. - Vol. 27, Is. 2. - P105-114, DOI 10.1089/nat.2016.0634 . - ISSN 2159-3337
Аннотация: Magnetomechanical cell disruption using nano- and microsized structures is a promising biomedical technology used for noninvasive elimination of diseased cells. It applies alternating magnetic field (AMF) for ferromagnetic microdisks making them oscillate and causing cell membrane disruption with cell death followed by apoptosis. In this study, we functionalized the magnetic microdisks with cell-binding DNA aptamers and guided the microdisks to recognize cancerous cells in a mouse tumor in vivo. Only 10 min of the treatment with a 100 Hz AMF was enough to eliminate cancer cells from a malignant tumor. Our results demonstrate a good perspective of using aptamer-modified magnetic microdisks for noninvasive microsurgery for tumors. © Mary Ann Liebert, Inc. 2017.

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Держатели документа:
Laboratory of Biomolecular and Medical Technologies, Krasnoyarsk State Medical University, 1, P. Zheleznyaka, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Krasnoyarsk Research Center, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Institute of Computational Modeling, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Institute of Semiconductor Physics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Krasnoyarsk State Pedagogical University, Krasnoyarsk, Russian Federation
Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Canada

Доп.точки доступа:
Zamay, T. N.; Zamay, G. S.; Belyanina, I. V.; Zamay, S. S.; Denisenko, V.V.; Денисенко, Валерий Васильевич; Kolovskaya, O. S.; Ivanchenko, T. I.; Grigorieva, V. L.; Garanzha, I. V.; Veprintsev, D. V.; Glazyrin, Y. E.; Shabanov, A. V.; Prinz, V. Y.; Seleznev, V. A.; Sokolov, A. E.; Prokopenko, V. S.; Kim, P. D.; Gargaun, A.; Berezovski, M. V.; Zamay, A. S.

/ I. V. Belyanina [et al.] // Theranostics. - 2017. - Vol. 7, Is. 13. - P3326-3337, DOI 10.7150/thno.17089. - Cited References:35. - The authors are grateful to George Y. Vorogeikin, Yuri I. Vorogeikin and "OKB ART". Andrey Barinov and "OPTEC Group" for help with 3D laser scanning imaging. Microscopic analyses using Carl Zeiss LSM 800 were done in the "Center for bioassay, nanotechnology and nanomaterials safety" ("Biotest-Nano") (Multiple-Access Center, Tomsk State University, Tomsk, Russia). Toxicity studies have been performed in Multiple-Access Center, Central Scientific Research Laboratory in Krasnoyarsk State Medical University named after prof. V.F. Voino-Yasenecky. This work was supported by the Russian Scientific Fund (grant #14-15-00805). . - ISSN 1838-7640РУБ Medicine, Research & Experimental

Аннотация: Biomedical applications of magnetic nanoparticles under the influence of a magnetic field have been proved useful beyond expectations in cancer therapy. Magnetic nanoparticles are effective heat mediators, drug nanocarriers, and contrast agents; various strategies have been suggested to selectively target tumor cancer cells. Our study presents magnetodynamic nanotherapy using DNA aptamer-functionalized 50 nm gold-coated magnetic nanoparticles exposed to a low frequency alternating magnetic field for selective elimination of tumor cells in vivo. The cell specific DNA aptamer AS-14 binds to the fibronectin protein in Ehrlich carcinoma hence helps deliver the gold-coated magnetic nanoparticles to the mouse tumor. Applying an alternating magnetic field of 50 Hz at the tumor site causes the nanoparticles to oscillate and pull the fibronectin proteins and integrins to the surface of the cell membrane. This results in apoptosis followed by necrosis of tumor cells without heating the tumor, adjacent healthy cells and tissues. The aptamer-guided nanoparticles and the low frequency alternating magnetic field demonstrates a unique non-invasive nanoscalpel technology for precise cancer surgery at the single cell level.

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Держатели документа:
Krasnoyarsk State Med Univ, Krasnoyarsk, Russia.
Russian Acad Sci, KSC Siberian Branch, Fed Res Ctr, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Univ Ottawa, Dept Chem & Biomol Sci, Ottawa, ON, Canada.
Inst Computat Modeling RAS SB, Krasnoyarsk, Russia.

Доп.точки доступа:
Belyanina, Irina V.; Zamay, Tatiana N.; Zamay, Galina S.; Zamay, Sergey S.; Kolovskaya, Olga S.; Ivanchenko, Tatiana I.; Denisenko, Valery V.; Kirichenko, Andrey K.; Glazyrin, Yury E.; Garanzha, Irina V.; Grigorieva, Valentina V.; Shabanov, Alexandr V.; Veprintsev, Dmitry V.; Sokolov, Alexey E.; Sadovskii, Vladimir M.; Gargaun, Ana; Berezovski, Maxim V.; Kichkailo, Anna S.; Russian Scientific Fund [14-15-00805]