Details

Autor(en) / Beteiligte

• Yoshida, Sumito
• Shime, Hiroaki
• Funami, Kenji
• Takaki, Hiromi
• Matsumoto, Misako
• Kasahara, Masanori
• Seya, Tsukasa
• Hirsch, Emilio

Titel

The Anti-Oxidant Ergothioneine Augments the Immunomodulatory Function of TLR Agonists by Direct Action on Macrophages

Ist Teil von

• PloS one, 2017-01, Vol.12 (1), p.e0169360-e0169360

Ort / Verlag

United States: Public Library of Science

Erscheinungsjahr

2017

Quelle

MEDLINE

Beschreibungen/Notizen

• L-Ergothioneine (EGT) is a naturally-occurring amino acid which is characterized by its antioxidant property; yet, the physiological role of EGT has yet to be established. We investigated the immune-enhancing properties of EGT, and found that it acts as a potentiator of toll-like receptor (TLR) signaling. When mouse bone marrow-derived macrophages (BMDMs) were pretreated with EGT, TLR signal-mediated cytokine production was augmented in BMDMs. The results were reproducible with TLR2, 3, 4 and 7 agonists. In particular, IL-6 and IL-12p40 were elevated further by pretreatment with EGT in BMDMs, suggesting the induction of M1 polarization. In co-culture assay with OT-II CD4+ T cells and splenic F4/80+ macrophages, EGT significantly induced Th17 skewing in CD4+ T cells. Thus, EGT is an immune modifier as well as a redox controller under TLR stimulation that induces M1 macrophages and a Th17 shift in inflammation.