Min, Su Ji Lee, Heesu Shin, Myoung-Sook Lee, Jae Wook 2024-01-19T09:30:44Z 2024-01-19T09:30:44Z 2023-07-13 2023-06 1661-6596 https://pubs.kist.re.kr/handle/201004/113642 This study aimed to synthesize 23 coumarin derivatives and analyze their anti-inflammatory effects on lipopolysaccharide (LPS)-induced inflammation in RAW264.7 macrophages. A cytotoxicity test performed on LPS-induced RAW264.7 macrophages revealed that none of the 23 coumarin derivatives were cytotoxic. Among the 23 coumarin derivatives, coumarin derivative 2 showed the highest anti-inflammatory activity by significantly reducing nitric oxide production in a concentration-dependent manner. Coumarin derivative 2 inhibited the production of proinflammatory cytokines, including tumor necrosis factor alpha and interleukin-6, and decreased the expression level of each mRNA. In addition, it inhibited the phosphorylation of extracellular signal-regulated kinase, p38, c-Jun NH2-terminal kinase, nuclear factor kappa-B p65 (NF-& kappa;B p65), and inducible nitric oxide synthase. These results indicated that coumarin derivative 2 inhibited LPS-induced mitogen-activated protein kinase and NF-& kappa;B p65 signal transduction pathways in RAW264.7 cells, as well as proinflammatory cytokines and enzymes related to inflammatory responses, to exert anti-inflammatory effects. Coumarin derivative 2 showed potential for further development as an anti-inflammatory drug for the treatment of acute and chronic inflammatory diseases. English Multidisciplinary Digital Publishing Institute (MDPI) Synthesis and Biological Properties of Pyranocoumarin Derivatives as Potent Anti-Inflammatory Agents Article 10.3390/ijms241210026 1 International Journal of Molecular Sciences, v.24, no.12 International Journal of Molecular Sciences 24 12 Y scie scopus 001017267900001 Biochemistry & Molecular Biology Chemistry, Multidisciplinary Biochemistry & Molecular Biology Chemistry Article NF-KAPPA-B SELECTIVE ACETYLCHOLINESTERASE INHIBITORS NITRIC-OXIDE IN-VITRO INFLAMMATION ACTIVATION MECHANISMS TRANSCRIPTION ARISUGACIN DISEASES Coumarins RAW264 7 macrophages lipopolysaccharide