Abstract
This study has shown that that a common cytokine pool induced in cultured human peripheral blood cells (PBC) supplied by either γ-globulin fraction proteins, copper or zinc cations, or appropriate metal complexes, contains detectable amounts of IL-6 (0.39+0.14 to 2.04+0.16 ng/ml). γ-globulin complexes with zinc or copper ions are able to induce production of IL-6 in amounts differing from those induced by control proteins, or copper and zinc ions used alone. IL-6 production by PBC in presence of γ-globulin/zinc complexes was 1.5 to 2.5-fold higher than with control proteins or single zinc ions at 24, 48 and 72 hrs of observation, whereas IL-6 production by PBC in presence of γ-globulin complexes with copper was higher than with appropriate control proteins or copper ions used alone for 48 and 72 hrs of cell incubation (resp., 1.7 to 2.4 and 2.8 to 4.6-fold increase). Possible role of copper and zinc ions chelated by γ-globulins from the microenvironment and modifying the Fc regions of antibodies, is considered a potential regulatory factor of IL-6 production by human PBC.
Highlights
Cheknev S.B., Efremova I.E., Mezdrokhina A.S., Babajanz A.A
Evaluation of IL-6 production by human blood cells incubated with metal complexes of γ-globulin
This study has shown that that a common cytokine pool induced in cultured human peripheral blood cells (PBC) supplied by either γ-globulin fraction proteins, copper or zinc cations, or appropriate metal complexes, contains detectable amounts of IL-6 (0.39+0.14 to 2.04+0.16 ng/ml). γ-globulin complexes with zinc or copper ions are able to induce production of IL-6 in amounts differing from those induced by control proteins, or copper and zinc ions used alone
Summary
Оценка выработки IL-6 клетками крови человека в присутствии металлокомплексов γ-глобулина. В работе показано, что в общем пуле цитокинов, вырабатываемых клетками крови человека в присутствии белков γ-глобулиновой фракции, их металлокомплексов с медью и цинком, а также катионов меди и цинка, примененных изолированно, содержится от 0,39±0,14 до 2,04±0,16 нг/мл интерлейкина-6 (IL-6). При этом металлокомплекс γ-глобулина с цинком на все сроки наблюдения (24, 48 и 72 ч инкубации клеток) оказывается в 1,5-2,5 раза (р < 0,001-0,02) более активным индуктором IL-6, чем контрольный белок и изолированно катионы цинка. Металлокомплекс γ-глобулина с медью на сроки индукции 48 и 72 ч в 1,7-2,4 раза (р < 0,02-0,1) активнее контрольного белка и в 2,8-4,6 раза (р < 0,001) – катионов меди, примененных изолированно. Обсуждается участие катионов меди и цинка, хелатируемых из микроокружения антителами и трансформирующих Fc регионы молекул антител, в регуляции выработки IL-6 клетками крови человека. Evaluation of IL-6 production by human blood cells incubated with metal complexes of γ-globulin
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