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Article Publish Status: FREE
Abstract Title:

Nimbolide attenuated the inflammation in the liver of autoimmune hepatitis's mice through regulation of HDAC3.

Abstract Source:

Toxicol Appl Pharmacol. 2022 01 1 ;434:115795. Epub 2021 Nov 12. PMID: 34780724

Abstract Author(s):

Dingchao Xia, Dazhi Chen, Tingchen Cai, Lujian Zhu, Yanhan Lin, Sijie Yu, Kailu Zhu, Xiaodong Wang, Lanman Xu, Yongping Chen

Article Affiliation:

Dingchao Xia

Abstract:

A chronic liver disease named autoimmune hepatitis (AIH) will carry elevated levels of inflammatory cytokines, but there is currently no effective treatment to cure it. Histone deacetylase 3 (HDAC3) takes an important position in regulating the expression of inflammatory genes. Nimbolide (NIB) is a limonoid extracted from the neem tree (Azadirachta indica) that has been found to be effective against many diseases, including cancer, scleroderma, and acute respiratory distress syndrome. Here, we investigated the protective effect of nimbolide on AIH liver. Mice and AML12 cells were employed to establish AIH model with liver antigen S100 and cell injury model of LPS, and then treated with different concentrations of nimbolide. After the successful establishment of the animal model and cell model, inflammatory cytokines of IL-1β, IL-6 and TNF-α as well as cellular signaling related to inflammation such as STAT3, IκB-α and NF-κB were examined. We observed for the first time about nimbolide can effectively inhibit inflammation in AIH mice's liver and AML12 cells by inhibiting HDAC3 expression. HDAC3 knocked down by siRNA in cells can also effectively alleviate the inflammation in AML12 cells, further confirming that HDAC3 plays an important role in the inflammation of liver cells. These results suggest nimbolide could be a potential new treatment for autoimmune hepatitis, and HDAC3 may become a new target for autoimmune hepatitis.

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