The association and potentially destructive role of Th9/IL‐9 is synergistic with Th17 cells by elevating MMP9 production in local lesions of oral lichen planus

Abstract

This study demonstrated that Th9/IL-9 can induce elevated levels of MMP9 to aggravate OLP disease severity, which may occur directly through increasing Th17 levels or indirectly through a synergistic role with Th17.