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TNFR2/14-3-3 signaling complex instructs macrophage plasticity in inflammation and autoimmunity
Journal article   Open access   Peer reviewed

TNFR2/14-3-3 signaling complex instructs macrophage plasticity in inflammation and autoimmunity

Wenyu Fu, Wenhuo Hu, Young-Su Yi, Aubryanna Hettinghouse, Guodong Sun, Yufei Bi, Wenjun He, Lei Zhang, Guanmin Gao, Jody Liu, …
The Journal of clinical investigation, v 131(16)
16 Aug 2021
url
https://doi.org/10.1172/jci144016View
Published, Version of Record (VoR)Maybe Open Access (Publisher Bronze) Open
url
https://doi.org/10.1172/JCI144016View
Published, Version of Record (VoR) Open

Abstract

Life Sciences & Biomedicine Medicine, Research & Experimental Research & Experimental Medicine Science & Technology
TNFR1 and TNFR2 have received prominent attention because of their dominance in the pathogenesis of inflammation and autoimmunity. TNFR1 has been extensively studied and primarily mediates inflammation. TNFR2 remains far less studied, although emerging evidence demonstrates that TNFR2 plays an antiinflammatory and immunoregulatory role in various conditions and diseases. Herein, we report that TNFR2 regulates macrophage polarization, a highly dynamic process controlled by largely unidentified intracellular regulators. Using biochemical copurification and mass spectrometry approaches, we isolated the signaling molecule 14-3-3c as a component of TNFR2 complexes in response to progranulin stimulation in macrophages. In addition, 14-3-3c was essential for TNFR2 signaling-mediated regulation of macrophage polarization and switch. Both global and myeloid-specific deletion of 14-3-3c resulted in exacerbated inflammatory arthritis and counteracted the protective effects of progranulin-mediated TNFR2 activation against inflammation and autoimmunity. TNFR2/14-3-3c signaled through PI3K/ Akt/mTOR to restrict NF-KB activation while simultaneously stimulating C/EBPp activation, thereby instructing macrophage plasticity. Collectively, this study identifies 14-3-3c as a previously unrecognized vital component of the TNFR2 receptor complex and provides new insights into the TNFR2 signaling, particularly its role in macrophage polarization with therapeutic implications for various inflammatory and autoimmune diseases with activation of the TNFR2/14-3-3c antiinflammatory pathway.

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Domestic collaboration
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Web of Science research areas
Medicine, Research & Experimental
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