Retinoic acid controls the homeostasis of pre-cDC-derived splenic and intestinal dendritic cells.

Retinoic acid controls the homeostasis of pre-cDC-derived splenic and intestinal dendritic cells.
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DOI:
10.1084/jem.20122508
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发表时间:
2013-09-23
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Restifo NP
Restifo NP
中科院分区:
其他
文献类型:
--
作者:
Klebanoff CA;Spencer SP;Torabi-Parizi P;Grainger JR;Roychoudhuri R;Ji Y;Sukumar M;Muranski P;Scott CD;Hall JA;Ferreyra GA;Leonardi AJ;Borman ZA;Wang J;Palmer DC;Wilhelm C;Cai R;Sun J;Napoli JL;Danner RL;Gattinoni L;Belkaid Y;Restifo NP

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需要视黄酸来维持脾脏中的前 DC 衍生的 CD11b+CD8α−Esamhigh 树突状细胞 (DC) 和肠道中的 CD11b+CD103+ DC。树突状细胞 (DC) 包含具有专门免疫调节功能的不同群体。然而,决定这些子集分化的环境因素仍然不明确。在这里,我们报道视黄酸(RA)是一种维生素 A 衍生物,控制前 DC(DC 前体)衍生的脾 CD11b+CD8α−Esamhigh DC 和肠道内发育相关的 CD11b+CD103+ 亚群的稳态。虽然剥夺 RA 信号传导的小鼠显着失去了这两个群体,但前 DC 衍生的 CD11b−CD8α+ 和 CD11b−CD103+ 以及单核细胞衍生的 CD11b+CD8α−Esamlow 或 CD11b+CD103− DC 群体都没有缺陷。在命运跟踪实验中,将前 DC 转移到补充 RA 的宿主中导致这些细胞几乎完全转化为 CD11b+CD8α− 子集,而转移到维生素 A 缺乏 (VAD) 宿主中则导致转向 CD11b−CD8α+ 谱系。由于维生素 A 是一种必需营养素,我们评估了小鼠和人类在辐射引起的粘膜损伤后的类视黄醇水平,发现这种调节导致了急性 VAD 状态。因此,辐射导致 RA 依赖性 DC 亚群选择性丧失,并损害 II 类限制性自身免疫和抗肿瘤免疫,而这些免疫功能可以通过补充 RA 来挽救。这些发现确立了 RA 在调节前 DC 衍生的 DC 亚群稳态中的关键作用,并对营养不良和辐射导致的免疫缺陷患者的治疗具有影响。
Retinoic acid is required to maintain pre-DC–derived CD11b+CD8α−Esamhigh dendritic cells (DCs) in the spleen and CD11b+CD103+ DCs in the gut. Dendritic cells (DCs) comprise distinct populations with specialized immune-regulatory functions. However, the environmental factors that determine the differentiation of these subsets remain poorly defined. Here, we report that retinoic acid (RA), a vitamin A derivative, controls the homeostasis of pre-DC (precursor of DC)–derived splenic CD11b+CD8α−Esamhigh DCs and the developmentally related CD11b+CD103+ subset within the gut. Whereas mice deprived of RA signaling significantly lost both of these populations, neither pre-DC–derived CD11b−CD8α+ and CD11b−CD103+ nor monocyte-derived CD11b+CD8α−Esamlow or CD11b+CD103− DC populations were deficient. In fate-tracking experiments, transfer of pre-DCs into RA-supplemented hosts resulted in near complete conversion of these cells into the CD11b+CD8α− subset, whereas transfer into vitamin A–deficient (VAD) hosts caused diversion to the CD11b−CD8α+ lineage. As vitamin A is an essential nutrient, we evaluated retinoid levels in mice and humans after radiation-induced mucosal injury and found this conditioning led to an acute VAD state. Consequently, radiation led to a selective loss of both RA-dependent DC subsets and impaired class II–restricted auto and antitumor immunity that could be rescued by supplemental RA. These findings establish a critical role for RA in regulating the homeostasis of pre-DC–derived DC subsets and have implications for the management of patients with immune deficiencies resulting from malnutrition and irradiation.
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影响因子: 32.4
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发表时间: 2007-07-09
期刊: The Journal of experimental medicine
影响因子: --
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影响因子: --
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