TGF-β-mediated enhancement of T(H)17 cell generation is inhibited by bone morphogenetic protein receptor 1α signaling.

TGF-β-mediated enhancement of T(H)17 cell generation is inhibited by bone morphogenetic protein receptor 1α signaling.
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DOI:
10.1126/scisignal.aar2125
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发表时间:
2018-08-28
期刊:
影响因子:
7.3
通讯作者:
Kraj P
Kraj P
中科院分区:
生物学1区
文献类型:
--
作者:
Browning LM;Pietrzak M;Kuczma M;Simms CP;Kurczewska A;Refugia JM;Lowery DJ;Rempala G;Gutkin D;Ignatowicz L;Muranski P;Kraj P

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转化生长因子-β (TGF-β) 家族的细胞因子可促进多种组织的生长和分化,但只有创始成员 TGF-β 在调节免疫反应中的作用已得到广泛研究。 TGF-β 对于防止自身反应性 T 细胞自发激活和维持免疫稳态至关重要。相反,在促炎细胞因子存在的情况下,TGF-β 促进效应 T 辅助细胞 17 (TH17) 细胞的分化。消除 TGF-β 受体信号传导可阻止白细胞介素 17 (IL-17) 分泌细胞的发育,并保护小鼠免受 TH17 细胞介导的自身免疫。在这里,我们发现 TGF-β 家族另一个成员的受体骨形态发生蛋白受体 1α (BMPR1α) 调节 T 辅助细胞的激活。我们发现,在 BMP 存在的情况下,TH17 细胞从初始 CD4+ T 细胞的分化受到抑制。 CD4+ T 细胞激活期间 BMPR1α 信号传导的废除会诱导一个发育程序,导致产生表达大量 IL-17、IFN-γ、TNF 家族细胞因子和定义 TH17 细胞谱系的转录因子的炎症效应细胞。我们发现 TGF-β 和 BMP 共同作用来建立效应细胞功能和激活的 CD4+ T 细胞的细胞因子谱。总之,我们的数据提供了对 BMP 免疫调节功能的深入了解。
The cytokines of the transforming growth factor–β (TGF-β) family promote the growth and differentiation of multiple tissues but the role of only the founding member, TGF-β, in regulating the immune responses has been extensively studied. TGF-β is critical to prevent the spontaneous activation of self-reactive T cells and sustain immune homeostasis. In contrast, in the presence of proinflammatory cytokines, TGF-β promotes the differentiation of effector T helper 17 (TH17) cells. Abrogating TGF-β receptor signaling prevents the development of interleukin-17 (IL-17)–secreting cells and protects mice from TH17 cell–mediated autoimmunity. Here, we found that the receptor of another member of TGF-β family, bone morphogenetic protein receptor 1α (BMPR1α), regulates T helper cell activation. We found that the differentiation of TH17 cells from naïve CD4+ T cells was inhibited in the presence of BMPs. Abrogation of BMPR1α signaling during CD4+ T cell activation induced a developmental program that led to the generation of inflammatory effector cells expressing large amounts of IL-17, IFN-γ, TNF family cytokines, and transcription factors defining the TH17 cell lineage. We found that TGF-β and BMPs co-operated to establish effector cell functions and the cytokine profile of activated CD4+ T cells. Together, our data provide insight into the immunoregulatory function of BMPs.
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