IL-17 induces MIP-1α expression in primary mouse astrocytes via TRPC channel

Inflammopharmacology
Yuan ZhangHonghong Yao

Abstract

Our previous study demonstrated IL-17-mediated induction of MIP-1α through its binding to the cognate IL-17RA and MIP-1α was involved in astrocyte activation. Transient receptor potential canonical (TRPC) channel was involved in astrocyte activation, however, whether TRPC channel regulates MIP-1α expression in the context of multiple sclerosis (MS) remains largely unknown. In this study we identify the essential role of TRPC channel in IL-17-mediated MIP-1α expression and astrocyte activation. Moreover, treatment of astrocytes with IL-17 activated MAPKs and PI3K/Akt signaling pathways with downstream NF-κB pathways. Interestingly, the TRPC blocker-SKF96365 (10 μM) and Norgestimate (10 μM) significantly inhibited the increased expression of MIP-1α via suppression of IL-17-mediated ERK, p38 and JNK MAPKs and PI3K/Akt pathway activation, thereby underscoring the role of TRPC channel in this process. Together these data underpin the role of TRPC channel as a novel target that regulates MIP-1α expression and cell activation-mediated by IL-17 with implications for therapeutic intervention for reversal of neuroinflammation inflicted by IL-17. Understanding the regulation of MIP-1α expression may provide insights into the development o...Continue Reading

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