Anti-histone H1 IgGs prossess proliferative activity towards human T-leukemia CEM cells / Yu. Kit [et al.] // Experimental Oncology. - 2017. - Том 39, N 1. - P36-41 : il. - 34 ref. MeSH-головна: ЛЕЙКОЗ T-КЛЕТОЧНЫЙ -- LEUKEMIA, T-CELL ВОЛЧАНКА КРАСНАЯ СИСТЕМНАЯ -- LUPUS ERYTHEMATOSUS, SYSTEMIC КРОВИ СЫВОРОТКА -- SERUM КЛЕТКИ ПРОЛИФЕРАЦИЯ -- CELL PROLIFERATION ПЕРЕКРЕСТНЫЕ РЕАКЦИИ -- CROSS REACTIONS АУТОАНТИТЕЛА -- AUTOANTIBODIES Анотація: The aim of this study was to characterize the proliferative activity of the anti-histone H1 IgGs towards human T-leukaemia CEM cells. Materials and Methods: Anti-histone H1 IgGs were purified from blood serum of systemic lupus erythematosus patients by precipitation of serum proteins with 50% ammonium sulfate followed by a sequential affinity chromatography on Protein GSepharose and histone H1-Sepharose columns. To avoid contamination with other proteins, anti-histone H1 IgGs were subjected to strongly acidic pH 2.0 during gel filtration through HPLC column. The effects of the anti-histone H1 IgGs on cell viability and cell cycle were tested by MTS-assay and flow cytometry, correspondingly. The cross-reactivity of the anti-histone H1 antibodies towards heterogenetic and cellular antigens was evaluated by Western-blot analysis. Results: It was found that incubation of CEM cells with the HPLC-purified anti-histone H1 IgGs resulted in significant stimulation of cell growth by 46% after 48 h of incubation. These IgGs possess an antigenic poly-specificity to positively charged heterogenetic antigens and different cellular antigens. FITC-labeled and biotinylated anti-histone H1 IgGs are internalized by CEM cells and preferentially accumulated in the cytoplasm. Conclusion: The anti-histone H1 IgGs are shown to internalize human T-leukemia CEM and stimulate their proliferation. These IgGs are polyspecific toward cellular antigens Дод.точки доступу: Kit, Yu. Magorivska, I. Bilyi, R. Myronovskij, S. Stoika, R. Вільних прим. немає