Aldose reductase inhibitors attenuate β-amyloid-induced TNF-α production in microlgia via ROS-PKC-mediated NF-κB and MAPK pathways

Title
Aldose reductase inhibitors attenuate β-amyloid-induced TNF-α production in microlgia via ROS-PKC-mediated NF-κB and MAPK pathways
Authors
양현옥Xiao-Min SongQian YuXin DongKe-Wu ZengJun LiPeng-Fei Tu
Keywords
Neuroinflammation; β-Amyloid; Aldose reductase inhibitor; Sorbinil; Zopolrestat
Issue Date
2017-09
Publisher
International immunopharmacology
Citation
VOL 50-37
Abstract
Microglia-mediated neuroinflammation is a key risk factor to the development of Alzheimer' disease (AD). Aldose reductase (AR) has been found to be widely involved in inflammation-related diseases; however, whether aldose reductase inhibitors (ARIs) could be used to treat neuroinflammation is rarely reported. This study aims to evaluate the anti-neuroinflammatory effects of two major ARIs of Sorbinil (Sor) and Zopolrestat (Zol) in β-amyloid protein (Aβ)-induced microglia (BV-2). We find that Sor and Zol significantly inhibit TNF-α, IL-1β, IL-6 production from microglia in response to Aβ stimulation. Mechanism study showed that Sor and Zol decreased the production of intracellular ROS which resulted in an effective inhibition on the phosphorylation of several protein kinase C (PKC) isoforms including PKCα/β, δ, ζ/λ and mu. Moreover, Sor and Zol inactivated PCK-associated IKKβ-IκB-NF-κB and mitogen-activated protein kinase (JNK, p38, ERK) inflammation pathways. In summary, our findings suggest that Sor and Zol could inhibit Aβ-induced neuroinflammation by regulating ROS/PKC-dependent NF-κB and MAPK signaling pathways, indicating that ARIs could be promising agents for treating inflammation-related neurodegenerative diseases such as AD.
URI
http://pubs.kist.re.kr/handle/201004/66579
ISSN
1567-5769
Appears in Collections:
KIST Publication > Article
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