Efficient presentation of soluble antigen by cultured human dendritic cells is maintained by granulocyte/macrophage colony-stimulating factor plus interleukin 4 and downregulated by tumor necrosis factor alpha.

Efficient presentation of soluble antigen by cultured human dendritic cells is maintained by granulocyte/macrophage colony-stimulating factor plus interleukin 4 and downregulated by tumor necrosis factor alpha.
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DOI:
10.1084/jem.179.4.1109
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发表时间:
1994-04-01
影响因子:
4.4
通讯作者:
Lanzavecchia, Antonio
Lanzavecchia, Antonio
中科院分区:
医学2区
文献类型:
--
作者:
Sallusto, Federica;Lanzavecchia, Antonio

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使用粒细胞/巨噬细胞集落刺激因子 (GM-CSF) 和白细胞介素 4,我们从血液单核细胞中建立了树突状细胞 (DC) 系,其在体内保持未成熟树突状细胞的抗原捕获和处理能力特征。这些细胞具有典型的树突形态,表达高水平的主要组织相容性复合体 (MHC) I 类和 II 类分子、CD1、Fc gamma RII、CD40、B7、CD44 和 ICAM-1,并且缺乏 CD14。培养的 DC 在混合白细胞反应 (MLR) 中具有高度刺激性,并且还能够触发脐带血初始 T 细胞。最引人注目的是,这些 DC 与抗原特异性 B 细胞一样有效地将破伤风类毒素 (TT) 呈递给特定的 T 细胞克隆。特异性抗体可以通过 FcR 介导的抗原摄取进一步增强它们的抗原呈递效率。将这些培养的​​ DC 与肿瘤坏死因子 α (TNF-α) 或可溶性 CD40 配体 (CD40L) 一起孵育 24 小时,导致 MHC I 类和 II 类分子、B7 和 ICAM-1 的表面表达增加,并出现 CD44 外显子 9 剪接变体 (CD44-v9);相比之下,Fc gamma RII 显着下调,有时甚至完全下调。与 TNF-α 短暂接触的功能后果是 MLR 中 T 细胞刺激能力增加,但可溶性 TT 的呈递减少 10 倍,TT-免疫球蛋白 G 复合物的呈递减少 100 倍。
Using granulocyte/macrophage colony-stimulating factor (GM-CSF) and interleukin 4 we have established dendritic cell (DC) lines from blood mononuclear cells that maintain the antigen capturing and processing capacity characteristic of immature dendritic cells in vivo. These cells have typical dendritic morphology, express high levels of major histocompatibility complex (MHC) class I and class II molecules, CD1, Fc gamma RII, CD40, B7, CD44, and ICAM-1, and lack CD14. Cultured DCs are highly stimulatory in mixed leukocyte reaction (MLR) and are also capable of triggering cord blood naive T cells. Most strikingly, these DCs are as efficient as antigen-specific B cells in presenting tetanus toxoid (TT) to specific T cell clones. Their efficiency of antigen presentation can be further enhanced by specific antibodies via FcR- mediated antigen uptake. Incubation of these cultured DCs with tumor necrosis factor alpha (TNF-alpha) or soluble CD40 ligand (CD40L) for 24 h results in an increased surface expression of MHC class I and class II molecules, B7, and ICAM-1 and in the appearance of the CD44 exon 9 splice variant (CD44-v9); by contrast, Fc gamma RII is markedly and sometimes completely downregulated. The functional consequences of the short contact with TNF-alpha are in increased T cell stimulatory capacity in MLR, but a 10-fold decrease in presentation of soluble TT and a 100-fold decrease in presentation of TT-immunoglobulin G complexes.
肿瘤坏死因子α维持鼠表皮兰格汉细胞在培养中的生存能力,但与粒细胞/巨噬细胞刺激因子相反,而没有诱导其功能成熟。
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发表时间: 1990-01-01
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DOI: 10.1016/0167-5699(92)90198-g
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DOI: 10.1073/pnas.90.7.3038
发表时间: 1993-04-01
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DOI: 10.1084/jem.177.2.397
发表时间: 1993-02-01
期刊: The Journal of experimental medicine
影响因子: --
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