TLR8 is expressed in monocytes in contrast to plasmacytoid dendritic cells and mediates aberrant IL-10 responses in patients with systemic sclerosis (SSc).
Christine EhlersThea ThieleHannah BiermannStephan TraidlLuzia BrunsAnnett ZieglerMatthias SchefzykLea M BartschUlrich KalinkeTorsten WitteTheresa GraalmannPublished in: Arthritis & rheumatology (Hoboken, N.J.) (2024)
TLR8 protein is not expressed in pDC of patients with SSc. Accordingly, they do not respond to TLR8 stimulation. In contrast, monocytes of patients with SSc respond to TLR8 stimulation with increased IL-10 responses. Therefore, TLR8 signaling in monocytes participates in SSc pathogenesis by conferring aberrant IL-10 expression.