Antigen-specific blocking of CD4-specific immunological synapse formation using BPI and current therapies for autoimmune diseases.

Antigen-specific blocking of CD4-specific immunological synapse formation using BPI and current therapies for autoimmune diseases.
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DOI:
10.1002/med.20243
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发表时间:
2012-07
影响因子:
13.3
通讯作者:
Siahaan, Teruna J.
Siahaan, Teruna J.
中科院分区:
医学1区
文献类型:
--
作者:
Manikwar, Prakash;Kiptoo, Paul;Badawi, Ahmed H.;Bueyuektimkin, Barlas;Siahaan, Teruna J.

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在这篇综述中,我们讨论了T细胞活化,病因学和目前的治疗自身免疫性疾病(即,MS、T1 D和RA)。T细胞在与抗原呈递细胞(APC)相互作用后被激活,随后在T细胞-APC界面处形成免疫突触(IS)的“靶心”样。尽管迄今为止开发的各种疾病修饰疗法已被证明可调节IS,从而有助于这些疾病的管理,但也已知它们存在一些不良副作用。在这项研究中,我们描述了一种新的和选择性的方法来抑制自身免疫,通过使用双功能肽抑制剂(BPI)。BPI使用细胞间粘附分子-1(ICAM-1)结合肽来靶向抗原肽(例如,蛋白脂质肽、谷氨酸脱羧酶和II型胶原蛋白)与APC结合,从而调节免疫应答。中心假设是BPI通过同时结合APC上的主要组织相容性复合物-II和ICAM-1来阻断IS形成,并选择性地将T细胞的活化从TH 1改变为Treg和/或TH 2表型,从而导致耐受。
In this review, we discuss T-cell activation, etiology, and the current therapies of autoimmune diseases (i.e., MS, T1D, and RA). T-cells are activated upon interaction with antigen-presenting cells (APC) followed by a “bull’s eye”-like formation of the immunological synapse (IS) at the T-cell–APC interface. Although the various disease-modifying therapies developed so far have been shown to modulate the IS and thus help in the management of these diseases, they are also known to present some undesirable side effects. In this study, we describe a novel and selective way to suppress autoimmunity by using a bifunctional peptide inhibitor (BPI). BPI uses an intercellular adhesion molecule-1 (ICAM-1)-binding peptide to target antigenic peptides (e.g., proteolipid peptide, glutamic acid decarboxylase, and type II collagen) to the APC and therefore modulate the immune response. The central hypothesis is that BPI blocks the IS formation by simultaneously binding to major histocompatibility complex-II and ICAM-1 on the APC and selectively alters the activation of T cells from TH1 to Treg and/or TH2 phenotypes, leading to tolerance.
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