The Role of Plasmacytoid Dendritic Cells in Cancers.

The Role of Plasmacytoid Dendritic Cells in Cancers.
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DOI:
10.3389/fimmu.2021.749190
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发表时间:
2021
影响因子:
7.3
通讯作者:
Liang Y
Liang Y
中科院分区:
医学2区
文献类型:
--
作者:
Zhou B;Lawrence T;Liang Y

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浆细胞样树突状细胞(Plasmacytoid dendritic cells,pDC)是树突状细胞的一种特殊亚型,具有浆细胞的形态特征。pDC产生大量的I型干扰素(IFN-I),其最初被发现在抗病毒免疫中起极其关键的作用。有趣的是,积累的证据表明,pDC也可以在肿瘤发生中发挥重要作用。在人体中,大多数IFN-α由toll样受体(TLR)刺激介导的活化的pDC分泌。在许多类型的癌症中,肿瘤被大量pDC浸润,然而,这些pDC对TLR刺激没有反应,并且IFN-α产生减少或不存在。此外,肿瘤浸润性pDC促进调节性T细胞(TCFs)募集到肿瘤微环境中,导致免疫抑制并促进肿瘤生长。在这篇综述中,我们讨论了最近的见解pDC的发展及其在各种恶性肿瘤中的作用,特别强调的基本机制。
Plasmacytoid dendritic cells (pDCs) are a special subtype of dendritic cells with the morphology of plasma cells. pDCs produce massive amounts of type I interferon (IFN-I), which was originally found to play an extremely pivotal role in antiviral immunity. Interestingly, accumulated evidence indicates that pDCs can also play an important role in tumorigenesis. In the human body, most of the IFN-α is secreted by activated pDCs mediated by toll-like receptor (TLR) stimulation. In many types of cancer, tumors are infiltrated by a large number of pDCs, however, these pDCs exhibit no response to TLR stimulation, and reduced or absent IFN-α production. In addition, tumor-infiltrating pDCs promote recruitment of regulatory T cells (Tregs) into the tumor microenvironment, leading to immunosuppression and promoting tumor growth. In this review, we discuss recent insights into the development of pDCs and their roles in a variety of malignancies, with special emphasis on the basic mechanisms.
宿主代谢和免疫系统界面处的共生细菌。
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