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

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

  • Int Immunopharmacol. 2017 Sep;50:30-37. doi: 10.1016/j.intimp.2017.06.005.
Xiao-Min Song 1,  Qian Yu 2,  Xin Dong 1,  Hyun Ok Yang 3,  Ke-Wu Zeng 4,  Jun Li 5,  Peng-Fei Tu 6
Affiliations

Affiliations

  • 1 State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
  • 2 Research Studio of Integration of Traditional and Western Medicine, First Hospital, Peking University, Beijing 100034, China.
  • 3 Natural Products Research Center, Korea Institute of Science and Technology (KIST) Gangneung Institute, Kangneung 210-340, Republic of Korea.
  • 4 State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China. Electronic address: ZKW@bjmu.edu.cn.
  • 5 State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China. Electronic address: lijun@bjmu.edu.cn.
  • 6 State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China. Electronic address: pengfeitu@bjmu.edu.cn.
PMID: 28623716 DOI: 10.1016/j.intimp.2017.06.005
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.

Keywords

Aldose reductase inhibitor; Neuroinflammation; Sorbinil; Zopolrestat; β-Amyloid.

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