8 research outputs found

    Белки мембранных микродоменов и их участие в онкогенезе

    Get PDF
    Lipid rafts are lateral assembles of cholesterol, sphingomyelin, glicosphingolipids and specific proteins within cell plasma membrane. These microdomains are involved into a number of important cellular processes including membrane rearrangement, protein internalization, signal transduction, entry of viruses into the cell. Some of lipid rafts are stabilized by special microdomain-forming proteins such as caveolins, SPFH domain containing superfamily, tetraspanins, galectins, which maintain integrity of rafts and regulate signal transduction via forming of “signalosomes”. Involvement of the different lipid rafts is necessary in many situations such as binding of growth factors with their receptors, integrin regulation, cytoskeleton and extracellular matrix rearrangements, vesicular transport, etc. However, such classes of microdomain-forming proteins are still considered separately from each other. In this review we tried to perform complex analysis of microdomain-forming proteins in regulation of cancer assotiated processes.Липидные рафты плазматических мембран формируются холестеролом, сфингомиелидами и гликосфинголипидами, а также различными белками. Эти микродомены участвуют в различных клеточных процессах, таких как перестройка мембраны, интернализация белков, передача сигналов, через них осуществляется проникновение вирусов внутрь клетки. Часть липидных рафтов стабилизирована специальными микродоменобразующими белками (МОБ). На сегодняшний день известно несколько семейств таких белков: кавеолины, SPFH- семейство, тетраспанины, галектины, которые не только поддерживают целостность микродоменов, но и формируют «сигналосомы» и, таким образом, являются регуляторами многих сигнальных путей. Участие различных классов МОБ необходимо для нормального функционирования комплексов ростовых факторов с их рецепторами, регуляции интегринов, факторов реорганизации клеточного скелета и внеклеточного матрикса, везикулярного транспорта и т. д. МОБ вовлечены практически во все аспекты жизнедеятельности клетки, однако до сих пор классы МОБ принято рассматривать отдельно друг от друга. В представленном обзоре проведен анализ участия МОБ разных семейств в общих сигнальных путях, ассоциированных с канцерогенезом

    CLINICAL AND VIROLOGICAL CHARACTERISTICS OF DISEASES ASSOCIATED WITH THE KAPOSI SARCOMA VIRUS

    No full text
    Abstract. The paper presents literature data and results of own studies on the Kaposi's sarcoma herpesvirus (KSHV) and its association with Kaposi's sarcoma (KS), the primary effusion lymphoma (PEL) and multicentric Kastleman disease (MCD). The obtained data show that all 3 main clinical forms of KS, diagnosed in Russia, are significantly associated with KSHV, though not always in 100% of cases. Distinct groups of persons with high prevalence of virus infection have been detected among patients with other forms of cancer and non-cancer diseases that may represent a risk factor for development of KS. It was found that the prostate, especially in patients with carcinoma of the prostate and KS could be an important localization of virus and intimate contact with these patients should be limited. For the first time in Russia HIV-negative case of PEL associated with KSHV had been diagnosed and studied in details. It was also demonstrated that isolates of KSHV, circulating in the country, belong to the two major genetic subgroups of the virus (A and C), a widely represented in the European countries and in the United States, which indicates a common origin of the virus in these countries. The current methodologies of KS’ treatment are also presented

    Nitric oxide as a key component in hormone-regulated processes

    No full text
    corecore