Iryna Tykhonkova

Iryna Tykhonkova
Clarivate Analytics

PhD

About

48
Publications
26,253
Reads
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123
Citations
Additional affiliations
October 2017 - present
Clarivate Analytics
Position
  • Customer Education Specialist
April 2016 - September 2017
Thomson Reuters
Position
  • Customer Education Specialist
January 2011 - present
National Academy of Sciences of Ukraine
Position
  • Senior Researcher
Education
September 1998 - June 1999
September 1994 - June 1998

Publications

Publications (48)
Chapter
Full-text available
Представлено досвід створення масового відкритого онлайн курсу "Наукова комунікація в цифрову епоху", розміщеного на платформі Prometheus. Описано основні етапи, на які варто звернути увагу тим, хто планує створювати курс, з якими складнощами можна зіткнутися та як їх уникнути.
Chapter
Full-text available
Web of Science Core Collection є високоселективною, реферативною наукометричною базою, в якій на сьогодні представлено більше 21 тисячі журналів за усіма спеціальностями, видавництва яких знаходяться у 110 країнах світу. Журнальну колекцію бази представлено трьома спеціалізованими індексами: Science Citation Index Expanded (SCIE) — природничі та те...
Article
Full-text available
Aim. To investigate the involvement of mTOR/S6K1 cell signaling network, with focus on S6K, in response of tumor cells to regulatory impact of fibroblasts. Methods. Cell culture, including co-cultivation of fibroblasts and tumor cells, immunofluorescence analysis, Western blot analysis, assessment of cell migration by scratch test, and transformati...
Article
Full-text available
Aim. To determine the paracrine effect of cultured fibroblasts on HeLa cell motility and mTOR/ S6K1 phosphorylation status in vitro. Background. High cancer cell motility is a feature of the malignant tumor. The mTOR/S6K1 signaling network is one of the key links in regulation of cell migration. The cancer cell motility is also dependent on the tum...
Chapter
Full-text available
Рецензування — обов’язковий процес, що має бути у наукового видання, проте часто можемо зустріти нерозуміння його функції та викривлені практики: друк без рецензії, вимога надіслати рецензію з рукописом. Окрім того, вічна проблема видання — знайти дійсно фахівців для рецензування певної публікації. Як правило, потужні видавництва та журнали з істор...
Conference Paper
Full-text available
Migration ability is an important feature of tumor cells. There are several approaches to analyze the dynamics of cancer cell migration in vitro. One of the most perspective and closer to the in vivo conditions is the model of initiation of the cell migration from 3D multicellular spheroids onto growth surface. Aim. Optimization of the model for ad...
Article
Full-text available
Migration capacity is an important feature of tumor cells. There are several approaches to analyze the dynamics of cancer cell migration in vitro. The model of initiation of cell migration from 3D multicellular spheroids onto growth surface is one of the closest to the in vivo conditions. Aim. Optimization of the model to study tumor cell mobility...
Chapter
Full-text available
Про обов'язкові елементи які мають бути у наукового видання, що треба робити/не робити щоб журнал став краще, про успішні і не дуже кроки дискутувалина конференціях Наукова періодика: традиції та інновації, починаючи з самої першої 9 червня 2010 році. За матеріалами доповідей опубліковано статті у книжковій серії Наука України у світовому інформаці...
Presentation
Full-text available
Про коректні першоджерела, наукові видання, хижацькі журнали, як перевірити індексацію видання у Web of Science, імпакт-фактор і метрики що намагаються використати цей показник.
Chapter
Full-text available
Web of Science Core Collection (WoS CC) is a leading global scholarly literature bibliographic database and citation index. The main part of WoS CC consists of three main journal collections: Science of Science Citation Index (SCIE), Social Sciences Citation Index (SSCI), and Art and Humanities Citation Index (AHCI). Since 2015, the WoS CC has been...
Presentation
Full-text available
Що запитують у бібліотекаря науковці і як знайти все це в Web of Science.
Presentation
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Публікаційний процес, підбір видання, вартість публікації, види публікацій, вимоги до їхнього оформлення, робота з рецензентами і дещо про хижацькі видання і як іх уникнути
Chapter
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Якісні наукові дослідження починаються з детального опрацювання актуальної літератури. Вчений у середньому читає близько 200 статей на рік. Зважаючи на існування понад 100 000 наукових журналів у світі, необхідно опрацьовувати найякісніші результати. Емпірична закономірність Бредфорда та принцип Парето вказують, що основна інформація міститься в 20...
Chapter
Full-text available
У вересні 2015 року створено веб-ресурс "Українські наукові журнали" (www.usj.org.ua). Мета проекту – зібрати на одній платформі інформацію, яка найчастіше необхідна авторам при виборі українського видання для публікації, забезпечити користувачам зручний пошук журналу за певними параметрами та допомогти редакторам покращити видання. Проект було під...
Presentation
Full-text available
Презентація можливостей платформи Web of Science, зокрема бази Core Collection, журнальной аналітики Journal Citation Report, референс менеджера EndNote, атороського профілю ResearcherID та аналітики Incites, для проведення, публікації і оцінки наукової роботи та можлива роль бібліотекарів ВНЗ в цьому.
Conference Paper
Full-text available
В майстер-класі показано склад платфоми Web of Science, можливостей і особливостей наукометричної бази Web of Science core collection, аналітичних надбудов Essential Science Indicators, Journal Citation Reports, функціоналу референс менеджеру EndNote та ідентифікатору автора ResearcherID для якіснихнаукових досліджень і можлива роль бібліотекарей у...
Conference Paper
Full-text available
Однією з причин того, що в Україні існує майже 3000 видань, що відносять себе до наукових, є вимога до кількості публікацій, які необхідні для захисту кандидатських і докторських дисертаційних робіт. На жаль, повного зручного переліку з можливістю зручного пошуку та інформацією, яка потрібна авторам, не існує. Видання дуже різняться за якістю, а мо...
Article
Full-text available
Aim. To study the subcellular localization of phospho-mTOR (Ser2481) in cultured cells of human cancer cell lines. Methods. Immunofluorescent analysis of phospho-mTOR (Ser2481) subcellular localization in cultured MCF-7 (human breast adenocarcinoma) and HepG2 (human liver carcinoma) cells. Results. For the first time phospho-mTOR (Ser2481) was dete...
Presentation
Full-text available
Презентація проекту Українські наукові видання http://usj.org.ua/
Chapter
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Each journal has it own specific format of the articles and the reference style is an important part of it. The choice of a particular publication style is based on tradition, taste and further possibility for computer processing by the search engines of scientometrics databases. There are more than 6000 journals styles which could be classified in...
Research
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В презентації наведено скріншоти поетапної реєстрації, заповнення профілів та обміну даними Orcid та ResearcherID
Conference Paper
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Imact factor, Hirsch Index, Scopus, Web of Science, elibrary, Google scholar in one short presentation in Ukrainian.
Chapter
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Digital Object Identifier (DOI), which appeared on the eve of 2000s, allows readers to instantly locate their digital object of interest (articles, book chapters, etc.), and opens up new opportunities for readers and scientific journals. Unfortunately, at the moment there is DOI only in few magazines that are published in Ukraine, and most of those...
Article
Full-text available
A scratch test is one of the most popular methods of classical cell migration assay in a monolayer culture. At the same time, the scratch assay has some disadvantages that can be easily corrected. Aim. Optimization the existent scratch assay on the base of detection of scratch wound surface area and the length of the field of observation which is m...
Chapter
Full-text available
The advances in technology and development of internet have fundamentally changed both publishing process and methodology of scientific information search. Often it is difficult to find a certain publication despite existence of scientific journals own websites. To solve this, in the late 90's the use of digital object identifier (doi) was proposed...
Article
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Aim. Serine/threonine protein phosphatase 5 (PP5) is a unique member of serine/threonine phosphatase family, comprises a regulatory tetratricopeptide repeat (TPR) domain and regulates many cell signaling pathways. Here, we describe the development of a PP5 specific monoclonal antibody (mAb) and characterize its suitability for Western blotting and...
Article
Full-text available
Aim. To develop a model to study the interaction between tumor and stromal cells in three-dimensional culture. Methods. Cultivation of HeLa cell lines and human dermal fibroblasts in monolayer and three-dimensional culture, immunofluorescent and immunohistochemical analysis. Results. In this work we present an approach based on a direct interaction...
Article
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The aim of this study was to produce monoclonal antibodies directed to the N-terminal regulatory region of S6K1, which shows very low homology to S6K2. Methods. Hybridoma technology, ELISA, Western blot, Immunoprecipitation. Results. Three hybridoma clones (A1, A2 and A3) producing mAbs specific to ribosomal protein S6 kinase 1 have been generated....
Article
Full-text available
Molecular chaperon Hsp60 and protein kinase p70S6K play an important functional role in the regulation of cardiomyocytes vital function or apoptosis. Aim. To study a possibility of in vivo complex formation between Hsp60 and p70S6K in cardiomyocytes. Methods. Co-immunoprecipitation, Western-blot analysis. Results. We have identified in vivo interac...
Article
Full-text available
The PI3K/PDK/Akt/mTOR/p70S6K signaling pathway is primary associated with the activation of insulin receptors and is important for cardiomyocytes survival. p70S6K is a key regulator of the speed and efficiency of protein biosynthesis within the cell. Recently the pro-apoptotic protein BAD has been identified as a new target for р70S6K1. BAD is inac...
Article
Detection of cell proliferation index is widely used in experimental and clinical research. Earlier it was shown that nuclear Ki-67 protein expression is strictly related to cell proliferation. It was revealed during all active phases of the cell cycle in mammals but was absent in G0 phase, so Ki-67 presence in cell nuclei reflects a potential grow...
Article
Full-text available
The main functional compartments of molecular chaperone Hsp60 are mitochondria and cytoplasm. Up to 30 % of Hsp60 are located in cytoplasm of cardiomyocytes. The interaction between molecular chaperone Hsp60 and proapoptotic Bax protein in the cytoplasmic fraction from normal human heart tissue has been revealed by co-immunoprecipitation in contras...
Article
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The levels of Hsp60, Hsp70 and Hsp90 in rats’ gastric mucosa cells lysates upon the development of experimental chronic atrophic gastritis (CAG) were investigated by the immunoblot-analysis. The quantities of Hsp60 and Hsp70 at the early (the first two weeks) and late (the 5–6th weeks) stages of disease progression were reliably higher in compariso...
Article
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To assess the correlation between the expression profiles of ribosomal protein S6 kinase (S6K1/2), Ki-67 nuclear antigen (Ki-67) and proliferating cell nuclear antigen (PCNA) in human breast adenocarcinomas. The expression pattern of S6K1/2, Ki-67 and PCNA has been investigated by immunohistochemical analysis of formalin fixed paraffin embedded sec...
Article
Full-text available
The study of tumor-associated antigens function is a prerequisite for understanding the molecular mechanisms of oncogenesis. Earlier we have determined the nuclear protein Ki-67 as an autoantigen in human melanoma. cDNA of immunogenic fragment of Ki-67 has been cloned into pET23d vector and expressed in bacterial cells. The recombinant fragment of...
Article
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The search for novel tumor-associated antigens eliciting humoral and cellular immune responses in tumor patients is an important goal in cancer diagnosis and immunotherapy. We utilized SEREX immunoscreening methodology to identify a set of novel tumor antigens, associated with thyroid cancer. 16 distinct antigens reactive with autologous sera were...
Article
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In this study two cDNA expressing libraries generated from thyroid papillar carcinomas were screened using SEREX approach. Thirty positive cDNA clones representing seventeen different genes were identified from both libraries. It is important to note, that three of them were isolated previously by other laboratories in SEREX screens of various type...
Article
Full-text available
Ten positive clones nave been identified during immunoscreening of expressing cDNA libraries by autologous sera. One of the clones encoded for a fragment of Ki-67 protein have been subcloned and the protein expressed in bacteria. Heterologous screening of recombinant Ki-67 protein by allogenic sera have been performed. Statistical analysis indicate...
Article
Full-text available
SEREX methodology (Serological identification of antigens by Recombinant EXpression cloning) has been successfully used in recent years in the search for novel tumor-assosiated antigens in different types of human malignancies. We present in this study the result of the screening of expression libraries generated from thyroid tumors by SEREX techni...
Article
Full-text available
Ribosomal kinase S6 (p70S6 kinase) is a key signalling molecule in the initiation of protein synthesis induced by growth factors and hormones. Until now, two forms of p70S6 kinase, p70a and p70β, have been identified. In this study, the C-terminal region of p70a was expressed in bacteria as a His-tag fusion protein and purified nearly to homogeneit...

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