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首页> 外文期刊>Nature immunology >Basophils enhance immunological memory responses.
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Basophils enhance immunological memory responses.

机译:嗜碱性粒细胞增强免疫记忆反应。

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The cellular basis of immunological memory remains a controversial issue. Here we show that basophils bound large amounts of intact antigens on their surface and were the main source of interleukins 6 and 4 in the spleen and bone marrow after restimulation with a soluble antigen. Depletion of basophils resulted in a much lower humoral memory response and greater susceptibility of immunized mice to sepsis induced by Streptococcus pneumoniae. Adoptive transfer of antigen-reactive basophils significantly increased specific antibody production, and activated basophils, together with CD4(+) T cells, profoundly enhanced B cell proliferation and immunoglobulin production. These basophil-dependent effects on B cells required interleukins 6 and 4 and increased the capacity of CD4(+) T cells to provide B cell help. Thus, basophils are important contributors to humoral memory immune responses.
机译:免疫记忆的细胞基础仍然是一个有争议的问题。在这里,我们显示嗜碱性粒细胞在其表面结合了大量完整的抗原,并且是可溶性抗原再刺激后在脾脏和骨髓中白介素6和4的主要来源。嗜碱性粒细胞的消耗导致体液记忆反应低得多,免疫小鼠对肺炎链球菌诱导的败血症的敏感性更高。抗原反应性嗜碱性粒细胞的过继转移显着增加了特异性抗体的产生,并且活化的嗜碱性粒细胞与CD4(+)T细胞一起极大地增强了B细胞增殖和免疫球蛋白的产生。这些对B细胞的嗜碱性粒细胞依赖性作用需要白介素6和4,并增加CD4(+)T细胞提供B细胞帮助的能力。因此,嗜碱性粒细胞是体液记忆免疫反应的重要贡献者。

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