A2A Adenosine Receptor Regulates the Human Blood-Brain Barrier Permeability.

A2A Adenosine Receptor Regulates the Human Blood-Brain Barrier Permeability.
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DOI:
10.1007/s12035-014-8879-2
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发表时间:
2015-08
影响因子:
5.1
通讯作者:
Bynoe, Margaret S.
Bynoe, Margaret S.
中科院分区:
医学2区
文献类型:
--
作者:
Kim, Do-Geun;Bynoe, Margaret S.

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血脑屏障(BBB)象征性地代表了通往中枢神经系统的门户。它是单层专门的内皮细胞,覆盖中枢神经系统 (CNS) 脉管系统,并将大脑环境与血液成分物理隔离,以维持 CNS 的稳态。然而,这种保护措施阻碍了神经系统疾病的治疗。在这里,我们证明用 FDA 批准的激动剂激活 A2A 腺苷受体 (AR) 可以有效地使体外原代人脑内皮屏障 (hBBB) 通透,使化疗药物和 T 细胞通过。 AR 信号传导下的 T 细胞迁移主要通过细胞旁跨内皮途径发生。 hBBB 的透化是快速、时间依赖性和可逆的,由 RhoA 信号传导诱导的肌动蛋白-细胞骨架重组的形态变化以及 Claudin-5 和 VE-Cadherin 的有效下调介导。此外,小鼠 BBB 通透性动力学与 hBBB 通透性动力学密切重叠。这些数据表明A2A AR的激活是一种内源性机制,可用于人类中枢神经系统药物递送。
The blood brain barrier (BBB) symbolically represents the gateway to the central nervous system. It is a single layer of specialized endothelial cells that coats the central nervous system (CNS) vasculature and physically separates the brain environment from the blood constituents, to maintain the homeostasis of the CNS. However, this protective measure is a hindrance to the delivery of therapeutics to treat neurological diseases. Here, we show that activation of A2A adenosine receptor (AR) with an FDA-approved agonist potently permeabilizes an in vitro primary human brain endothelial barrier (hBBB) to the passage of chemotherapeutic drugs and T cells. T cell migration under AR signaling occurs primarily by paracellular transendothelial route. Permeabilization of the hBBB is rapid, time-dependent and reversible and is mediated by morphological changes in actin-cytoskeletal reorganization induced by RhoA signaling and a potent down-regulation of Claudin-5 and VE-Cadherin. Moreover, the kinetics of BBB permeability in mice closely overlaps with the permeability kinetics of the hBBB. These data suggest that activation of A2A AR is an endogenous mechanism that may be used for CNS drug delivery in human.
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发表时间: 2010-12-01
影响因子: 2.4
作者:
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发表时间: 2002-02-15
影响因子: 5.5
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DOI: 10.1523/jneurosci.3337-11.2011
发表时间: 2011-09-14
期刊: The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子: --
作者:
Carman AJ;Mills JH;Krenz A;Kim DG;Bynoe MS
通讯作者: Bynoe MS