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Nephronectin influences EAE development by regulating the Th17/Treg balance via reactive oxygen species.
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- Author(s): Machiko Honda; Tatsuya Segawa; Kiyoshi Ishikawa; Masahiro Maeda; Yoshiro Saito; Shigeyuki Kon
- Source:
American Journal of Physiology: Cell Physiology; Apr2022, Vol. 322 Issue 4, pC699-X711, 13p- Subject Terms:
- Source:
- Additional Information
- Abstract: Blood levels of the extracellular matrix protein nephronectin (Npnt), a protein critical for kidney development, are elevated in autoimmune experimental autoimmune encephalitis (EAE) mice, which are a model for multiple sclerosis. We found here that treatment with anti-Npnt antibody directed against the α
8 β1 integrin-binding site (Npnt-blocking antibody) inhibits EAE development. The selenium transporter selenoprotein P (SeP) was identified as a novel Npnt-binding partner. In EAE, Npnt induced SeP and glutathione peroxidase 1 (GPx1) expression, followed by reactive oxygen species (ROS) inhibition in CD4+ T cells; these changes were disturbed by Npnt-blocking antibody treatment, which also caused suppressed differentiation of interleukin (IL)-17-producing CD4+ T-helper cells (Th17s) and elevated differentiation of regulatory T cells (Tregs). Treatment of EAE mice with the ROS scavenger N-acetyl cysteine (NAC) blocked the Npnt-blocking antibody-induced decrease in Th17 differentiation and increase in Treg differentiation. In conclusion, the interaction between Npnt and SeP contributes to EAE development by regulating the Th17/Treg balance via the ROS level. [ABSTRACT FROM AUTHOR] - Abstract: Copyright of American Journal of Physiology: Cell Physiology is the property of American Physiological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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