Wip1-dependent modulation of macrophage migration and phagocytosis

Yiting Tang, Bing Pan, Xin Zhou, Kai Xiong, Qian Gao, Lei Huang, Ying Xia, Ming Shen, Shulin Yang, Honglin Liu, Tao Tan, Jianjie Ma, Xuehong Xu, Yulian Mu*, Kui Li

*Corresponding author for this work
    7 Citations (Scopus)
    48 Downloads (Pure)

    Abstract

    Macrophage accumulation within the vascular wall is a hallmark of atherosclerosis. Controlling macrophage conversion into foam cells remains a major challenge for treatment of atherosclerotic diseases. Here, we show that Wip1, a member of the PP2C family of Ser/Thr protein phosphatases, modulates macrophage migration and phagocytosis associated with atherosclerotic plaque formation. Wip1 deficiency increases migratory and phagocytic activities of the macrophage under stress conditions. Enhanced migration of Wip1-/- macrophages is mediated by Rac1-GTPase and PI3K/AKT signalling pathways. Elevated phagocytic ability of Wip1-/- macrophages is linked to CD36 plasma membrane recruitment that is regulated by AMPK activity. Our study identifies Wip1 as an intrinsic negative regulator of macrophage chemotaxis. We propose that Wip1-dependent control of macrophage function may provide avenues for preventing or eliminating plaque formation in atherosclerosis.

    Original languageEnglish
    JournalRedox Biology
    Volume13
    Pages (from-to)665-673
    Number of pages9
    ISSN2213-2317
    DOIs
    Publication statusPublished - 2017

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