Inflammasome components ASC and AIM2 modulate the acute phase of biomaterial implant-induced foreign body responses.
Susan N Christo, Kerrilyn R Diener, Jim Manavis, Michele A Grimbaldeston, Akash Bachhuka, Krasimir Vasilev, John D Hayball
Sci Rep | Published : 2016
Detailing the inflammatory mechanisms of biomaterial-implant induced foreign body responses (FBR) has implications for revealing targetable pathways that may reduce leukocyte activation and fibrotic encapsulation of the implant. We have adapted a model of poly(methylmethacrylate) (PMMA) bead injection to perform an assessment of the mechanistic role of the ASC-dependent inflammasome in this process. We first demonstrate that ASC(-/-) mice subjected to PMMA bead injections had reduced cell infiltration and altered collagen deposition, suggesting a role for the inflammasome in the FBR. We next investigated the NLRP3 and AIM2 sensors because of their known contributions in recognising damaged a..View full abstract