Tumor-Derived Autophagosomes (DRibbles) Activate Human B Cells to Induce Efficient Antigen-Specific Human Memory T-Cell Responses.

Tumor-Derived Autophagosomes (DRibbles) Activate Human B Cells to Induce Efficient Antigen-Specific Human Memory T-Cell Responses.
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DOI:
10.3389/fimmu.2021.675822
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发表时间:
2021
影响因子:
7.3
通讯作者:
Wang L
Wang L
中科院分区:
医学2区
文献类型:
--
作者:
Ren H;Zhang T;Wang Y;Yao Q;Wang Z;Zhang L;Wang L

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我们报道了肿瘤源性自噬体(DRibbles)是肿瘤抗原的有效载体,DRibbles抗原可被DRibbles激活的B细胞提呈,刺激小鼠效应T细胞和幼稚T细胞。然而,DRibbles对人类B细胞的影响仍不清楚。在此,我们发现DRibbles还可以有效地诱导人B细胞的增殖和活化,并导致趋化因子、细胞因子和造血生长因子的产生。我们进一步证明了人B细胞可以有效地直接吞噬DRibbles并交叉呈递DRibbles抗原以刺激抗原特异性记忆T细胞。此外,我们发现DRibbles上的膜结合高迁移率族B1(HMGB 1)对于诱导人B细胞活化至关重要。因此,这些发现为促进B-DRibbles疫苗的临床应用提供了进一步的证据。
We have reported that tumor-derived autophagosomes (DRibbles) were efficient carriers of tumor antigens and DRibbles antigens could be present by DRibbles-activated B cells to stimulate effect and naïve T cells in mice. However, the effect of DRibbles on human B cells remains unclear. Herein, we found that DRibbles can also efficiently induce proliferation and activation of human B cells and lead to the production of chemokines, cytokines and hematopoietic growth factors. We further demonstrated human B cells can effectively phagocytose DRibbles directly and cross-present DRibbles antigens to stimulate antigen-specific memory T cells. Furthermore, we found that membrane-bound high-mobility group B1 (HMGB1) on DRibbles was crucial for inducing human B cells activation. Therefore, these findings provide further evidence to promote the clinical application of B-DRibbles vaccines.
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