Inhibition of Neuroinflammation by AIBP: Spinal Effects upon Facilitated Pain States
- 주제(기타) Cell Biology
- 설명문(일반) [Woller, Sarah A.; Ramachandran, Roshni; Yaksh, Tony L.] Univ Calif San Diego, Dept Anesthesiol, La Jolla, CA 92093 USA; [Choi, Soo-Ho; Schneider, Dina A.; Kim, Jungsu; Corr, Maripat; Miller, Yury, I] Univ Calif San Diego, Dept Med, La Jolla, CA 92093 USA; [An, Eun Jung; Bae, Yun Soo] Ewha Womans Univ, Dept Life Sci, Seoul, South Korea; [Low, Hann; Sviridov, Dmitri] Baker Heart & Diabet Inst, Dept Lipoprot & Atherosclerosis, Melbourne, Vic, Australia
- 등재 SCIE, SCOPUS
- 발행기관 CELL PRESS
- 발행년도 2018
- URI http://www.dcollection.net/handler/ewha/000000151462
- 본문언어 영어
- Published As http://dx.doi.org/10.1016/j.celrep.2018.04.110
초록/요약
Apolipoprotein A-I binding protein (AIBP) reduces lipid raft abundance by augmenting the removal of excess cholesterol from the plasma membrane. Here, we report that AIBP prevents and reverses processes associated with neuroinflammatory-mediated spinal nociceptive processing. The mechanism involves AIBP binding to Toll-like receptor-4 (TLR4) and increased binding of AIBP to activated microglia, which mediates selective regulation of lipid rafts in inflammatory cells. AIBP-mediated lipid raft reductions downregulate LPS-induced TLR4 dimerization, inflammatory signaling, and expression of cytokines in microglia. In mice, intrathecal injections of AIBP reduce spinal myeloid cell lipid rafts, TLR4 dimerization, neuroinflammation, and glial activation. Intrathecal AIBP reverses established allodynia in mice in which pain states were induced by the chemotherapeutic cisplatin, intraplantar formalin, or intrathecal LPS, all of which are pro-nociceptive interventions known to be regulated by TLR4 signaling. These findings demonstrate a mechanism by which AIBP regulates neuroinflammation and suggest the therapeutic potential of AIBP in treating preexisting pain states.
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