Accessory cell-derived signals required for T cell activation

Accessory cell-derived signals required for T cell activation
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T 细胞激活所需的辅助细胞衍生信号

DOI:
10.1007/bf02918368
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发表时间:
1993
影响因子:
4.4
通讯作者:
M. Jenkins
M. Jenkins
中科院分区:
医学4区
文献类型:
--
作者:
Julia G. Johnson;M. Jenkins

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不同的辅助细胞群体在其作为有效的抗原呈递细胞(APC)和刺激CD 4 + T细胞产生白细胞介素-2的能力方面有所不同。与APC效力直接相关的三个重要因素是II类主要组织相容性复合物分子的表达和将肽抗原呈递给T细胞抗原受体的能力,共刺激配体的表达和粘附分子的表达,所述共刺激配体递送不依赖于T细胞受体占有的重要活化信号,所述粘附分子促进缀合物形成,使得这些活化信号可以有效地递送至T细胞,细胞这些辅助细胞的功能在T细胞活化的相对重要性将进行讨论,重点是共刺激和CD 28/B7受体/配体对。此外,还将讨论由其他有效的APC诱导T细胞无能的共刺激不足的后果。* 直接支持 * A02 GS 021 00006
Various populations of accessory cells differ in their abilities to function as effective antigen-presenting cells (APC) and stimulate CD4+ T cells to produce interleukin-2. Three important factors directly related to APC potency are the expression of class II major histocompatibility complex molecules and the ability to present peptide antigens to the T cell antigen receptor, the expression of costimulatory ligands which deliver important activation signals independent of T cell receptor occupancy and the expression of adhesion molecules which promote conjugate formation so that these activation signals can be effectively delivered to the T cells. The relative importance of these accessory cell functions in T cell activation will be discussed, with an emphasis on costimulation and the CD28/B7 receptor/ligand pair. The consequence of inadequate costimulation by an otherwise effective APC in inducting T cell anergy will also be discussed. *** DIRECT SUPPORT *** A02GS021 00006
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DOI: --
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