ArticleJournal of microbiology and biotechnology2022
A Newly Synthesized Flavone from Luteolin Escapes from COMT-Catalyzed Methylation and Inhibits Lipopolysaccharide-Induced Inflammation in RAW264.7 Macrophages via JNK, p38 and NF-κB Signaling Pathways.
Article in Journal of microbiology and biotechnology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed, 10 citations in OpenAlex.
- Screening macrophage polarization genes in spinal cord injury as therapeutic targets.PloS one · 2026Article
- Jianpi Yiqi Busui prescription alleviates myasthenia gravis by regulating Th17 through the TAK1/P38 MAPK/eIF-4E signaling pathway.Biomolecules & biomedicine · 2025Article
- Mediterranean Diet as a Therapeutic Strategy for Hypertension and Cardiovascular Health.International journal of hypertension · 2025Review
- Luteolin alleviates Herpes Simplex Keratitis by inhibiting inflammatory responses via suppressing the PTGS2/NF-κB signaling pathway.American journal of translational research · 2025Article
- Heat-Killed Latilactobacillus sakei CNSC001WB and Lactobacillus pentosus WB693 Have an Anti-inflammatory Effect on LPS-Stimulated RAW 264.7 Cells.Probiotics and antimicrobial proteins · 2024Article
- A newly synthesized flavone avoids COMT-catalyzed methylation and mitigates myocardial ischemia/reperfusion injury in H9C2 cells via JNK and P38 pathways.Iranian journal of basic medical sciences · 2024Article
- The Anti-Inflammatory Mechanism of Flaxseed Linusorbs on Lipopolysaccharide-Induced RAW 264.7 Macrophages by Modulating TLR4/NF-κB/MAPK Pathway.Foods (Basel, Switzerland) · 2023Article
- Oxygen mediated oxidative couplings of flavones in alkaline water.Nature communications · 2022Article
- Downregulation of IL-8 and IL-10 by the Activation of CaInternational journal of molecular sciences · 2022Article
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Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Luteolin is a common dietary flavone possessing potent anti-inflammatory activities. However, when administrated in vivo, luteolin becomes methylated by catechol-O-methyltransferases (COMT) owing to the catechol ring in the chemical structure, which largely diminishes its anti-inflammatory effect. In this study, we made a modification on luteolin, named LUA, which was generated by the chemical reaction between luteolin and 2,2'-azobis(2-amidinopropane) dihydrochloride (AAPH). Without a catechol ring in the chemical structure, this new flavone could escape from the COMT-catalyzed methylation, thus affording the potential to exert its functions in the original form when administrated in the organism. Moreover, an LPS-stimulated RAW cell model was applied to detect the anti-inflammatory properties. LUA showed much more superior inhibitory effect on LPS-induced production of NO than diosmetin (a major methylated form of luteolin) and significantly suppressed upregulation of iNOS and COX-2 in macrophages. LUA treatment dramatically reduced LPS-stimulated reactive oxygen species (ROS) and mRNA levels of pro-inflammatory mediators such as IL-1β, IL-6, IL-8 and IFN-β. Furthermore, LUA significantly reduced the phosphorylation of JNK and p38 without affecting that of ERK. LUA also inhibited the activation of NF-κB through suppression of p65 phosphorylation and nuclear translocation.
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