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<article article-type="research-article" dtd-version="1.2" xml:lang="ru" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><front><journal-meta><journal-id journal-id-type="issn">2658-6533</journal-id><journal-title-group><journal-title>Научные результаты биомедицинских исследований</journal-title></journal-title-group><issn pub-type="epub">2658-6533</issn></journal-meta><article-meta><article-id pub-id-type="doi">10.18413/2658-6533-2023-9-1-0-3</article-id><article-id pub-id-type="publisher-id">2983</article-id><article-categories><subj-group subj-group-type="heading"><subject>Генетика</subject></subj-group></article-categories><title-group><article-title>&lt;strong&gt;Роль молекулярно-генетических изменений структуры гена &lt;em&gt;CDH1&lt;/em&gt; в развитии рака желудка у пациентов из Республики Башкортостан&lt;/strong&gt;</article-title><trans-title-group xml:lang="en"><trans-title>&lt;strong&gt;The role of molecular genetic changes in the structure of the &lt;em&gt;CDH1&lt;/em&gt; gene in the development of gastric cancer in patients from the Republic of Bashkortostan&lt;/strong&gt;</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Нургалиева</surname><given-names>Альфия Хаматьяновна</given-names></name><name xml:lang="en"><surname>Nurgalieva</surname><given-names>Alfiya Kh.</given-names></name></name-alternatives><email>alfiyakh83@gmail.com</email></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Галлямова</surname><given-names>Лилия Фанилевна</given-names></name><name xml:lang="en"><surname>Gallyamova</surname><given-names>Liliya F.</given-names></name></name-alternatives><email>hiame@mail.ru</email></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Валиев</surname><given-names>Руслан Радисович</given-names></name><name xml:lang="en"><surname>Valiev</surname><given-names>Ruslan R.</given-names></name></name-alternatives><email>ruslan_valiev@mail.ru</email></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Петрова</surname><given-names>Сабина Геннадьевна</given-names></name><name xml:lang="en"><surname>Petrova</surname><given-names>Sabina G.</given-names></name></name-alternatives><email>sabina25petrova@gmail.com</email></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Джаубермезов</surname><given-names>Мурат Алиевич</given-names></name><name xml:lang="en"><surname>Dzhaubermezov</surname><given-names>Murat A.</given-names></name></name-alternatives><email>muratkbr12@gmail.com</email></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Прокофьева</surname><given-names>Дарья Симоновна</given-names></name><name xml:lang="en"><surname>Prokofieva</surname><given-names>Darya S.</given-names></name></name-alternatives><email>dager-glaid@yandex.ru</email></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Екомасова</surname><given-names>Наталья Вадимовна</given-names></name><name xml:lang="en"><surname>Ekomasova</surname><given-names>Natalia V.</given-names></name></name-alternatives><email>ekomasova.natalia@gmail.com</email></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Рахимов</surname><given-names>Радмир Радимович</given-names></name><name xml:lang="en"><surname>Rakhimov</surname><given-names>Radmir R.</given-names></name></name-alternatives><email>radmir-rr@mail.ru</email></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Сакаева</surname><given-names>Дина Дамировна</given-names></name><name xml:lang="en"><surname>Sakaeva</surname><given-names>Dina D.</given-names></name></name-alternatives><email>D_sakaeva@mail.ru</email></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Хуснутдинов</surname><given-names>Шамиль Масгутович</given-names></name><name xml:lang="en"><surname>Khusnutdinov</surname><given-names>Shamil M.</given-names></name></name-alternatives><email>shamilkhusn@mail.ru</email></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Хуснутдинова</surname><given-names>Эльза Камилевна</given-names></name><name xml:lang="en"><surname>Khusnutdinova</surname><given-names>Elza K.</given-names></name></name-alternatives><email>elzakh@mail.ru</email></contrib></contrib-group><pub-date pub-type="epub"><year>2023</year></pub-date><volume>9</volume><issue>1</issue><fpage>0</fpage><lpage>0</lpage><self-uri content-type="pdf" xlink:href="/media/medicine/2023/1/Биомедицинские_исследования-40-53_6FxF54v.pdf" /><abstract xml:lang="ru"><p>Актуальность: Рак желудка (РЖ) является одним из тяжелейших заболеваний, занимающего лидирующие позиции среди причин смерти от злокачественных новообразований в мире. В Республике Башкортостан (РБ) также зарегистрированы высокие показатели заболеваемости и смертности по злокачественным новообразованиям желудка. К одному из основных генов, обуславливающих высокий риск предрасположенности к данной патологии, относится ген CDH1. Цель исследования: Поиск изменений последовательности нуклеотидов в гене CDH1 у больных раком желудка из Республики Башкортостан. Материалы и методы: Материалом для исследования послужили образцы ДНК больных РЖ и здоровых доноров, проживающих в РБ. Геномную ДНК выделяли из лимфоцитов периферической крови методом фенольно-хлороформной экстракции. Амплификацию проводили с использованием специфичных праймеров, фланкирующих изучаемый экзон. Исследование экзонов на наличие изменений нуклеотидной последовательности проводили методами SSCP и HRM. Для верификации молекулярно-генетических изменений использовали метод секвенирования по Сэнгеру. Результаты: В 11-ом экзоне гена CDH1 выявлен генетический вариант rs35741240 (c.1680G&amp;gt;C, p.Thr560=). Среди больных выявлено 4 пациента &amp;ndash; носителя аллеля С в гетерозиготном состоянии (1,33%), частота встречаемости генотипа GC среди здоровых лиц составила 0,67% (2 человека). В 12-ом экзоне гена CDH1 также обнаружен редкий полиморфный локус rs33969373 (c.1896C&amp;gt;T, p.His571=). Вариант выявлен также в гетерозиготном состоянии, частота генотипа СТ в группе больных составила 1,00% (3 человека), среди контроля &amp;ndash; 0,33% (1 человек). В 14 экзоне гена CDH1 выявлен синонимичный полиморфный локус rs33964119 (c.2253C&amp;gt;T, p.Asn751=). Показано, что данный вариант в гетерозиготном состоянии встречается у 24 пациентов (8,00%), а среди здоровых лиц частота генотипа CT составила 5,33% (16 человек). Статистически значимых различий в распределении частот аллелей и генотипов выявленных локусов между группами больных и контроля не выявлено (p&amp;gt;0,05). Заключение: Нами обнаружены ранее известные синонимичные изменения нуклеотидной последовательности в экзонах 11, 12 и 14 гена CDH1 (rs35741240, rs33969373, rs33964119, соответственно). Ни одно из выявленных изменений не является патогенным

&amp;nbsp;

&amp;nbsp;</p></abstract><trans-abstract xml:lang="en"><p>Background:&amp;nbsp;Gastric cancer (GC) is one of the most serious diseases, occupying a leading position among the causes of death from malignant neoplasms in the world. The Republic of Bashkortostan (RB) also has high rates of morbidity and mortality due to malignant neoplasms of the stomach. One of the main genes that determine a high risk of predisposition to this pathology is the CDH1 gene. The aim of the study:&amp;nbsp;Search for changes in the nucleotide sequence in the CDH1 gene in patients with gastric cancer from the Republic of Bashkortostan. Materials and methods:&amp;nbsp;The material for the study was DNA samples of gastric cancer patients and healthy donors living in the RB. Genomic DNA was isolated from peripheral blood lymphocytes by phenol-chloroform extraction. Amplification was performed using specific primers flanking the studied exon. The study of exons for the presence of changes in the nucleotide sequence was carried out using the SSCP and HRM methods. To verify molecular genetic changes, the Sanger sequencing method was used. Results:&amp;nbsp;The genetic variant rs35741240 (c.1680G&amp;gt;C, p.Thr560=) was found in the 11th exon of the CDH1 gene. Four patients (1.33%) were found to be heterozygous C allele carriers among patients; the incidence of GC genotype among healthy individuals was 0.67% (2 patients). A rare polymorphic locus rs33969373 (c.1896C&amp;gt;T, p.His571=) was also found in the 12th exon of the CDH1 gene. The variant was also detected in the heterozygous state, the frequency of the CT genotype in the group of patients was 1.00% (3 patients), among the control &amp;ndash; 0.33% (1 patients). In exon 14 of the CDH1 gene, a synonymous polymorphic locus rs33964119 (c.2253C&amp;gt;T, p.Asn751=) was found. It was shown that this variant in the heterozygous state occurs in 24 patients (8.00%), and among healthy individuals the frequency of the CT genotype was 5.33% (16 patients). Pairwise comparison of the frequencies of alleles and genotypes of the identified loci between the groups of patients and controls revealed no statistically significant differences (p&amp;gt;0.05). Conclusion:&amp;nbsp;As a result of the study, we found previously known changes in the nucleotide sequence in exons 11, 12 and 14 of the CDH1 gene (rs35741240, rs33969373 and rs33964119). None of the identified changes is pathogenic.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>рак желудка</kwd><kwd>ген CDH1</kwd><kwd>генетический вариант</kwd><kwd>поиск изменений нуклеотидной последовательности</kwd><kwd>секвенирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>gastric cancer</kwd><kwd>CDH1 gene</kwd><kwd>genetic variant</kwd><kwd>search for changes in nucleotide sequence</kwd><kwd>sequencing</kwd></kwd-group></article-meta></front><back><ref-list><title>Список литературы</title><ref id="B1"><mixed-citation>Каприна АД, Старинского ВВ, Шахзадовой АО, редакторы. Состояние онкологической помощи населению России в 2020 году. М.: МНИОИ им. П.А. Герцена &amp;minus; филиал ФГБУ &amp;laquo;НМИЦ радиологии&amp;raquo; Минздрава России; 2022.</mixed-citation></ref><ref id="B2"><mixed-citation>Sexton RE, Al Hallak MN, Diab M, et al. Gastric cancer: a comprehensive review of current and future treatment strategies. Cancer and Metastasis Reviews. 2020;39(4):1179-1203. 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