Шевченко Марина Александровна

Образование

Период обученияСтрана, городУчебное заведениеДополнительная информация
1992–1998 Москва РХТУ им. Д.И. Менделеева красный диплом

Избранные публикации

  1. Troyanova N.I., Shevchenko M.A., Boyko A.A., Mirzoyev R.R., Pertseva M.A., Kovalenko E.I., Sapozhnikov A.M. (2015). Modulating Effect of Extracellular HSP70 on Generation of Reactive Oxigen Species in Populations of Phagocytes. Russ. J. Bioorgan. Chem. 41 (3), 271–279 [+]

    Reactive oxygen species (ROS) produced by phagocytic cells of the innate immune system play an important role in the first line of defense protecting the host from pathogens. The NADPH oxidase multi-subunit complex is the main source of ROS in all types of the phagocytes. Formation of the membrane-associated enzyme complex and its activity are dependent on many different factors controlling both intensification and suppression of the ROS production rate. However, the evidences are emerging in recent years indicating existence of poorly studied mechanisms of restriction of ROS generation level in phagocytes directed at protection of host tissues in the sites of inflammation from destruction caused by the oxygen free radicals. Our previous data and results of other authors demonstrate that a mechanism of the limitation of ROS production by phagocytes may by connected with immunomodulating activity of extracellular pool. of HSP70. In the present work, we used inhibitors of NADPH oxidase and in vitro cultures of different phagocytes to study a possible relationship between down-regulating effect of exogenous HSP70 on ROS generation and the interaction of the protein with the enzyme subunits. Our results confirmed the literature data concerning the ability of extracellular HSP70 to modulate NADPH oxidase activity and demonstrated for the first time an inhibitory effect of the protein on intracellular ROS generation in phagocytes.

    ID:1502
  2. Shevchenko M.A., Bolkhovitina E.L., Servuli E.A., Sapozhnikov A.M. (2013). Elimination of Aspergillus fumigatus conidia from the airways of mice with allergic airway inflammation. Respir. Res. 14, 78 [+]

    Aspergillus fumigatus conidia can exacerbate asthma symptoms. Phagocytosis of conidia is a principal component of the host antifungal defense. We investigated whether allergic airway inflammation (AAI) affects the ability of phagocytic cells in the airways to internalize the resting fungal spores.

    ID:987
  3. Svirshchevskaya E.V., Shevchenko M.A., Huet D., Femenia F., Latgé J.P., Boireau P., Berkova N.P. (2009). Susceptibility of mice to invasive aspergillosis correlates with delayed cell influx into the lungs. Int. J. Immunogenet. 36 (5), 289–99 [+]

    Ubiquitous fungus Aspergillus fumigatus (A. fumigatus) is involved in invasive pulmonary aspergillosis (IPA), a frequent infection in immunocompromized patients. Genetic differences are likely to play a role predisposing to IPA. This study was aimed to compare six genetically different mouse strains in their susceptibility to IPA and to determine possible mechanisms involved in the pathogenesis of this infection. Immunosuppressed BALB/c and C57BL/6 mice infected with A. fumigatus conidia were more resistant to IPA than DBA/1, DBA/2, CBA, and A/Sn strains. Phagocytosis of A. fumigatus conidia by blood polymorphonuclear neutrophils (PMN) or bone marrow derived dendritic cells showed no difference between strains. All IPA susceptible strains demonstrated decreased PMN influx into the lungs during infection compared with resistant strains. Flow cytometry analysis of the composition of lung infiltrating cells showed that IPA susceptible mice had a decreased number of phagocytes before the infection. After infection the numbers of Gr-1(+)CD11b(+) PMN cells in the lungs of immunosuppressed mice increased from 10-20% to 50-60% while the percentage of CD11(+)F4/80(+) resident macrophages was unchanged. Among susceptible strains DBA/2 and A/Sn have a defect in C5 component of complement. Injection of normal serum into complement deficient but not into complement sufficient CBA or DBA/1 mice significantly improved their survival. We showed that complement replacement significantly increased PMN homing to the lungs of complement deficient mice. Thus, defect in complement system can predispose to IPA. Our results demonstrated that early influx of PMN into the lungs of mice is important for the resistance to IPA.

    ID:988
  4. Veres T.Z., Shevchenko M., Krasteva G., Spies E., Prenzler F., Rochlitzer S., Tschernig T., Krug N., Kummer W., Braun A. (2009). Dendritic cell-nerve clusters are sites of T cell proliferation in allergic airway inflammation. Am. J. Pathol. 174 (3), 808–17 [+]

    Interactions between T cells and dendritic cells in the airway mucosa precede secondary immune responses to inhaled antigen. The purpose of this study was to identify the anatomical locations where dendritic cell-T cell interactions occur, resulting in T cells activation by dendritic cells. In a mouse model of allergic airway inflammation, we applied whole-mount immunohistology and confocal microscopy to visualize dendritic cells and T cells together with nerves, epithelium, and smooth muscle in three dimensions. Proliferating T cells were identified by the detection of the incorporation of the nucleotide analogue 5-ethynyl-2'-deoxyuridine into the DNA. We developed a novel quantification method that enabled the accurate determination of cell-cell contacts in a semi-automated fashion. Dendritic cell-T cell interactions occurred beneath the smooth muscle layer, but not in the epithelium. Approximately 10% of the dendritic cells were contacted by nerves, and up to 4% of T cells formed clusters with these dendritic cells. T cells that were clustered with nerve-contacting dendritic cells proliferated only in the airways of mice with allergic inflammation but not in the airways of negative controls. Taken together, these results suggest that during the secondary immune response, sensory nerves influence dendritic cell-driven T cell activation in the airway mucosa.

    ID:989
  5. Veres T.Z., Rochlitzer S., Shevchenko M., Fuchs B., Prenzler F., Nassenstein C., Fischer A., Welker L., Holz O., Müller M., Krug N., Braun A. (2007). Spatial interactions between dendritic cells and sensory nerves in allergic airway inflammation. Am. J. Respir. Cell Mol. Biol. 37 (5), 553–61 [+]

    Neuroimmune interactions play a critical role in the pathogenesis of asthma. Symptoms like wheezing and cough have been attributed to neural dysregulation, whereas sensitization and the induction of allergic inflammation have been linked with the activity of dendritic cells. Neuropeptides were previously shown to control dendritic cell function in vitro, suggesting interactions between dendritic cells and sensory nerves. Here we characterized the anatomical basis of the interactions between dendritic cells and nerves in the airways of mice and monitored the changes during allergic inflammation. Airway microdissection, whole-mount immunohistology, and confocal microscopy were used for the three-dimensional quantitative mapping of airway nerves and dendritic cells along the main axial pathway of nonsensitized versus ovalbumin-sensitized and -challenged CD11c-enhanced yellow fluorescent protein (CD11c-EYFP) transgenic mice. CD11c-EYFP-positive airway mucosal dendritic cells were contacted by calcitonin gene-related peptide-immunoreactive sensory fibers and their co-localization increased in allergic inflammation. Moreover, protein gene product 9.5-positive neuroepithelial bodies and airway ganglia were associated with dendritic cells. In human airways, human leukocyte antigen DR-positive mucosal dendritic cells were found in the close proximity of sensory nerves and neuroepithelial cells. These results provide morphologic evidence of the interactions between dendritic cells and the neural network of the airways at multiple anatomical sites.

    ID:990
  6. Alekseeva L., Nekrasov A., Marchenko A., Shevchenko M., Benevolenskii S., Sapozhnikov A., Kurup V.P., Svirshchevskaya E. (2007). Cryptic B-cell epitope identification through informational analysis of protein sequences. Vaccine 25 (14), 2688–97 [+]

    A comparison of the location of B-cell epitopes and information structure (IS) of protein sequences was attempted. Analysis of 62 known B-cell epitopes located in five different proteins showed that they concentrated in IS sites with increased degree of information coordination. Based on the analysis of IS six peptides from two proteins were selected and produced in a recombinant form as yeast virus-like particles (VLPs). Immunization of mice with recombinant VLP-peptides has induced the production of IgG capable of recognizing full-length antigens. This result suggests that the analysis of IS of proteins can be useful in the selection of peptides possessing cryptic B-cell epitope activity.

    ID:991
  7. Svirshchevskaya E.V., Viskova N., Shevchenko M., Alekseeva L., Marchenko A., Benevolensky S., Kurup V.P. (2004). High-affinity IgG to a major A. fumigatus allergen, Asp f 2, retards allergic response. Med. Sci. Monit. 10 (10), BR371–80 [+]

    Allergic diseases represent a major health threat to humans. Allergen-specific immunotherapy (SIT) is one of the significant approaches to the treatment of IgE-mediated allergy and its control. The mechanisms involved in SIT-induced responses are complex and still speculative. Immunological events associated with successful SIT include an increase in allergen-specific "blocking" IgG, reduction in cytokine production, and induction of regulatory or suppressor cells. The aim of this study was to estimate the effect of SIT using a single major allergen of A. fumigatus, Asp f 2, or its dominant B-cell epitope, aa254-268, in a murine model of allergic aspergillosis. It is known that A. fumigatus (Af), a ubiquitous fungus, is implicated in the pathogenesis of a number of clinically different allergic diseases.

    ID:992