The role of regulatory T cells and TH17 cells in multiple myeloma.

The role of regulatory T cells and TH17 cells in multiple myeloma.
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DOI:
10.1155/2012/293479
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发表时间:
2012
影响因子:
--
通讯作者:
Colleoni GW
Colleoni GW
中科院分区:
其他
文献类型:
--
作者:
Braga WM;Atanackovic D;Colleoni GW

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多发性骨髓瘤(MM)的发展涉及骨髓微环境的一系列遗传改变和改变,有利于肿瘤的生长和局部免疫控制的失败。在MM中,CD4+和CD8+ T细胞的数量和功能改变已被描述。T调节细胞(Treg)和T辅助细胞(Th) 17之间的平衡是维持MM抗肿瘤免疫的一个必要前提。Treg在保护自身耐受性和调节针对感染和肿瘤细胞的整体免疫反应中发挥重要作用。在MM患者中,Tregs似乎有助于骨髓瘤相关的免疫功能障碍,因此,靶向它们可能有助于恢复和增强重要的免疫反应。Th17细胞可以抵抗真菌和寄生虫感染,并参与炎症反应和自身免疫。在骨髓瘤患者骨髓中高水平表达的TGF-β和IL-6的相互作用可能直接或通过其他促炎细胞因子影响Th17细胞的产生,从而调节抗肿瘤免疫反应。为了设计更有效、毒性更小的免疫治疗骨髓瘤模式,对Tregs和Th17细胞之间的平衡进行详细分析似乎是必要的,骨髓瘤仍然是一种无法治愈的恶性肿瘤。
The development of multiple myeloma (MM) involves a series of genetic alterations and changes in the bone marrow microenvironment, favoring the growth of the tumor and failure of local immune control. Quantitative and functional alterations in CD4+ and CD8+ T cells have been described in MM. The balance between T regulatory cells (Treg) and T helper (Th) 17 cells represents one essential prerequisite for maintaining anti-tumor immunity in MM. Tregs play an important role in the preservation of self-tolerance and modulation of overall immune responses against infections and tumor cells. In MM patients, Tregs seem to contribute to myeloma-related immune dysfunction and targeting them could, therefore, help to restore and enhance vital immune responses. Th17 cells protect against fungal and parasitic infections and participate in inflammatory reactions and autoimmunity. The interplay of TGF-β and IL-6, expressed at high levels in the bone marrow of myeloma patients, may affect generation of Th17 cells both directly or via other pro-inflammatory cytokines and thereby modulate antitumor immune responses. A detailed analysis of the balance between Tregs and Th17 cells seems necessary in order to design more effective and less toxic modes of immunotherapy myeloma which still is an uncurable malignancy.
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