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Anti-inflammatory effects of a fluorovinyloxyacetamide compound KT-15087 in microglia cells
Jiyeon Ock1, Sangseop Kim, Kyoungho Suk
1Department of Pharmacology, Brain Science and Engineering Institute, CMRI, Kyungpook National University School of Medicine, 101 Dong-In, Joong-gu, Daegu 700-422, South Korea.
Abstract:
The microglial activation plays an important role in the progression of neurodegenerative diseases by secreting various proinflammatory cytokines and neurotoxic factors. Inhibition of microglial activation may alleviate neurodegenerative processes. To search for novel therapeutic agents against neuroinflammatory diseases, several fluorovinyloxyacetamide derivatives were screened for anti-inflammatory effects in lipopolysaccharide (LPS)-stimulated microglial cells. From cell-based screening, it was found that a novel synthetic compound KT-15087 markedly attenuated the production of nitric oxide (NO) and tumor necrosis factor (TNF)-alpha in microglial cells. KT-15087 also suppressed the gene expression of inducible nitric oxide synthase (iNOS), TNF-alpha and interleukin (IL)-1beta. The compound inhibited the nuclear translocation and DNA binding of NF-kappaB as well as the phosphorylation of p38 mitogen-activated protein kinases (MAPK) and c-jun N-terminal kinase (JNK). Moreover, KT-15087 showed a neuroprotective activity by reducing the cytotoxicity of LPS-stimulated microglia toward B35 neuroblastoma cells in the coculture. The neuroprotective activity of the compound was most effective when microglia were pretreated with the compound prior to LPS challenge. Taken collectively, KT-15087 has an anti-inflammatory activity in microglia, and might have a therapeutic potential for the treatment of neuroinflammatory diseases.
Insights
A novel compound, KT-15087, reduces inflammation in microglial cells by inhibiting key signaling pathways. This compound demonstrates potential as a therapeutic agent for neuroinflammatory diseases.
Area of Science:
- Neuroscience
- Immunology
- Pharmacology
Background:
- Microglial activation contributes to neurodegenerative diseases via pro-inflammatory cytokine release.
- Inhibiting microglial activation is a potential therapeutic strategy for neuroinflammation.
Purpose of the Study:
- To screen fluorovinyloxyacetamide derivatives for anti-inflammatory effects in microglial cells.
- To evaluate the therapeutic potential of novel compounds against neuroinflammatory diseases.
Main Methods:
- Screening of synthetic fluorovinyloxyacetamide derivatives in lipopolysaccharide (LPS)-stimulated microglial cells.
- Assessing the effects of KT-15087 on nitric oxide (NO), tumor necrosis factor (TNF)-alpha, inducible nitric oxide synthase (iNOS), interleukin (IL)-1beta, NF-kappaB, p38 MAPK, and JNK.
- Evaluating neuroprotective activity using a B35 neuroblastoma cell co-culture model.
Main Results:
- KT-15087 significantly reduced NO and TNF-alpha production in microglial cells.
- The compound suppressed the gene expression of iNOS, TNF-alpha, and IL-1beta.
- KT-15087 inhibited NF-kappaB nuclear translocation and DNA binding, and suppressed p38 MAPK and JNK phosphorylation.
- KT-15087 demonstrated neuroprotective effects by reducing microglial cytotoxicity.
Conclusions:
- KT-15087 exhibits significant anti-inflammatory activity in activated microglial cells.
- The compound's mechanism involves the inhibition of NF-kappaB and MAPK signaling pathways.
- KT-15087 shows therapeutic potential for treating neuroinflammatory diseases.
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