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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Acta Naturae</journal-id><journal-title-group><journal-title xml:lang="en">Acta Naturae</journal-title><trans-title-group xml:lang="ru"><trans-title>Acta Naturae</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-8251</issn><publisher><publisher-name xml:lang="en">Acta Naturae Ltd</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">10519</article-id><article-id pub-id-type="doi">10.32607/20758251-2015-7-1-109-116</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Research Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Экспериментальные статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Interaction with Serum Albumin As a Factor of the Photodynamic Efficacy of Novel Bacteriopurpurinimide Derivatives</article-title><trans-title-group xml:lang="ru"><trans-title>Комплексообразование с альбумином как фактор фотодинамической активности новых производных бактериопурпуринимида</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Аkimova</surname><given-names>А. V.</given-names></name><name xml:lang="ru"><surname>Акимова</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alexa_karpenko@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rychkov</surname><given-names>G. N.</given-names></name><name xml:lang="ru"><surname>Рычков</surname><given-names>Г. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alexa_karpenko@mail.ru</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Grin</surname><given-names>М. А.</given-names></name><name xml:lang="ru"><surname>Грин</surname><given-names>М. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alexa_karpenko@mail.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Filippova</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Филипповa</surname><given-names>Н. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alexa_karpenko@mail.ru</email><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Golovina</surname><given-names>G. V.</given-names></name><name xml:lang="ru"><surname>Головина</surname><given-names>Г. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alexa_karpenko@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Durandin</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Дурандин</surname><given-names>Н. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alexa_karpenko@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vinogradov</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Виноградов</surname><given-names>A. M.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alexa_karpenko@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Коkrashvili</surname><given-names>Т. А.</given-names></name><name xml:lang="ru"><surname>Кокрашвили</surname><given-names>Т. А.</given-names></name></name-alternatives><address><country country="GE">Georgia</country></address><email>alexa_karpenko@mail.ru</email><xref ref-type="aff" rid="aff6"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mironov</surname><given-names>А. F.</given-names></name><name xml:lang="ru"><surname>Миронов</surname><given-names>А. Ф.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alexa_karpenko@mail.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shtil</surname><given-names>А. А.</given-names></name><name xml:lang="ru"><surname>Штиль</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alexa_karpenko@mail.ru</email><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Кuzmin</surname><given-names>V. А.</given-names></name><name xml:lang="ru"><surname>Кузьмин</surname><given-names>В. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alexa_karpenko@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N.M. Emanuel Institute of Biochemical Physics</institution></aff><aff><institution xml:lang="ru">Институт биохимической физики им. Н.М. Эмануэля РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Petersburg Nuclear Physics Institute</institution></aff><aff><institution xml:lang="ru">Петербургский институт ядерной физики</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">St.Petersburg State Polytechnical University</institution></aff><aff><institution xml:lang="ru">Санкт-Петербургский государственный политехнический университет</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">M.V. Lomonosov Moscow State University of Fine Chemical Technologies</institution></aff><aff><institution xml:lang="ru">Московский государственный университет тонких химических технологий им. М.В. Ломоносова</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">N.N. Blokhin Russian Cancer Research Center</institution></aff><aff><institution xml:lang="ru">Российский онкологический научный центр им. Н.Н. Блохина РАМН</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="en">Georgian Technical University</institution></aff><aff><institution xml:lang="ru">Грузинский технический университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2015-03-15" publication-format="electronic"><day>15</day><month>03</month><year>2015</year></pub-date><volume>7</volume><issue>1</issue><issue-title xml:lang="en">VOL 7, NO1 (2015)</issue-title><issue-title xml:lang="ru">ТОМ 7, №1 (2015)</issue-title><fpage>109</fpage><lpage>116</lpage><history><date date-type="received" iso-8601-date="2020-01-17"><day>17</day><month>01</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2015, Аkimova А.V., Rychkov G.N., Grin М.А., Filippova N.A., Golovina G.V., Durandin N.A., Vinogradov A.M., Коkrashvili Т.А., Mironov А.F., Shtil А.А., Кuzmin V.А.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2015, Акимова А.В., Рычков Г.Н., Грин М.А., Филипповa Н.A., Головина Г.В., Дурандин Н.A., Виноградов A.M., Кокрашвили Т.А., Миронов А.Ф., Штиль А.А., Кузьмин В.А.</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="en">Аkimova А.V., Rychkov G.N., Grin М.А., Filippova N.A., Golovina G.V., Durandin N.A., Vinogradov A.M., Коkrashvili Т.А., Mironov А.F., Shtil А.А., Кuzmin V.А.</copyright-holder><copyright-holder xml:lang="ru">Акимова А.В., Рычков Г.Н., Грин М.А., Филипповa Н.A., Головина Г.В., Дурандин Н.A., Виноградов A.M., Кокрашвили Т.А., Миронов А.Ф., Штиль А.А., Кузьмин В.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://actanaturae.ru/2075-8251/article/view/10519">https://actanaturae.ru/2075-8251/article/view/10519</self-uri><abstract xml:lang="en"><p>Optimization of the chemical structure of antitumor photosensitizers (PSs) is aimed at increasing their affinity to a transport protein, albumin and irreversible light-induced tumor cell damage. Bacteriopurpurinimide derivatives are promising PSs thanks to their ability to absorb light in the near infrared spectral region. Using spectrophotometry, we show that two new bacteriopurpurinimide derivatives with different substituents at the N atoms of the imide exocycle and the pyrrole ring A are capable of forming non-covalent complexes with human serum albumin (HSA). The association constant (calculated with the Benesi-Hildebrand equation) for N-ethoxybacteriopurpurinimide ethyloxime (compound 1) is higher than that for the methyl ether of methoxybacteriopurpurinimide (compound 2) (1.18×10 5 M-1 vs. 1.26×10 4 M -1, respectively). Molecular modeling provides details of the atomic interactions between 1 and 2 and amino acid residues in the FA1 binding site of HSA. The ethoxy group stabilizes the position of 1 within this site due to hydrophobic interaction with the protein. The higher affinity of 1 for HSA makes this compound more potent than 2 in photodynamic therapy for cultured human colon carcinoma cells. Photoactivation of 1 and 2 in cells induces rapid (within a few minutes of irradiation) necrosis. This mechanism of cell death may be efficient for eliminating tumors resistant to other therapies.</p></abstract><trans-abstract xml:lang="ru"><p>Оптимизация химической структуры противоопухолевых фотосенсибилизаторов (ФС) направлена на повышение аффинности к белку-транспортеру - альбумину, и на индукцию необратимыхповреждений при освещении опухолевых клеток. Производные бактериопурпуринимида - перспективные ФС, поглощающие свет в ближней инфракрасной области спектра. Спектрофотометрически показано, что новые производные бактериопурпуринимида, отличающиеся заместителями при атомах азо- та в имидном экзоцикле и пиррольном кольце А, образуют нековалентные комплексы с сывороточным альбумином человека (ЧСА). Величина конcтанты комплексообразования метилового эфира этилоксима N-этоксибактериопурпуринимида (соединение 1) существенно выше, чем у метилового эфира оксима N-метоксибактериопурпуринимида (соединение 2) (1.18 × 105 и 1.26 × 104 M-1 соответственно) (метод Бенеши-Хильдебрандта). Молекулярное моделирование комплексообразования с ЧСА выявило структурные особенности и энергии межатомных взаимодействий 1 и 2 с аминокислотными остатками в сайте связывания гемоподобных молекул белка. Установлено, что этоксильные группы стабилизируют расположение соединения 1 в этом сайте за счет гидрофобных взаимодействий с белком. Более высокая аффинностьсоединения 1 к ЧСА позволила использовать его в меньшей концентрации, чем соединения 2, для фото- повреждения культивируемых клеток рака толстой кишки. Фотоактивация 1 и 2 приводила к быстрому (в течение первых минут) некрозу опухолевых клеток. Этот механизм гибели может иметь практическое значение для элиминации опухолевых клеток, устойчивых к другим противоопухолевым воздействиям.</p></trans-abstract><kwd-group xml:lang="en"><kwd>photosensitizers</kwd><kwd>albumin</kwd><kwd>association constant</kwd><kwd>photodynamic therapy</kwd><kwd>cancer</kwd><kwd>necrosis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>альбумин</kwd><kwd>константа комплексообразования</kwd><kwd>некроз</kwd><kwd>рак</kwd><kwd>фотодинамическая терапия</kwd><kwd>фотосенсибилизаторы</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This work was supported by the Russian Federal Property Fund (grant No. 11-03-00620) and the Federal Target Program “Research and Development in Priority Directions for the Development of the Russian Science and Technology Complex for 2007-2013” (state contract No. 14.512.11.0016).</funding-statement><funding-statement xml:lang="ru">Работа поддержана РФФИ (грант №11-03-00620) и Федеральной целевой программой «Исследования и разработки по приоритетным направлениям развития научно-технического комплекса России на 2007–2013 годы» (госконтракт № 14.512.11.0016).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] Phillips D. // Int. 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