Adenosine A2A receptor controls the gateway of the choroid plexus

Mengqian Ye, Mengru Wang, Yijia Feng, Huiping Shang, Yuwen Yang, Lanxin Hu, Muran Wang, Serhii Vakal, Xiangxiang Lin, Jiangfan Chen*, Wu Zheng

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    4 Citations (Scopus)


    The choroid plexus (CP) is one of the key gateways regulating the entry of peripheral immune cells into the CNS. However, the neuromodulatory mechanisms of maintaining its gateway activity are not fully understood. Here, we identified adenosine A2A receptor (A2AR) activity as a regulatory signal for the activity of CP gateway under physiological conditions. In association with a tightly closed CP gateway, we found that A2AR was present at low density in the CP. The RNA-seq analysis revealed that the A2AR antagonist KW6002 affected the expression of the cell adhesion molecules’ (CAMs) pathway and cell response to IFN-γ in the CP. Furthermore, blocking or activating A2AR signaling in the CP resulted in a decreased and an increased, respectively, expression of lymphocyte trafficking determinants and disruption of the tight junctions (TJs). Furthermore, A2AR signaling regulates the CP permeability. Thus, A2AR activity in the CP may serve as a therapeutic target for remodeling the immune homeostasis in the CNS with implications for the treatment of neuroimmunological disorders.

    Original languageEnglish
    JournalPurinergic Signalling
    Publication statusPublished - 2022
    MoE publication typeA1 Journal article-refereed


    • Adenosine A receptors
    • Cell adhesion
    • CGS21680
    • Choroid plexus
    • KW6002
    • Tight junctions


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