Subtopic Deep Dive

Prenylated Flavonoids Anti-inflammatory Mechanisms
Research Guide

What is Prenylated Flavonoids Anti-inflammatory Mechanisms?

Prenylated flavonoids are bioactive natural compounds with isoprenoid side chains that inhibit inflammatory pathways including NF-κB signaling and cytokine production.

Research identifies prenylated flavonoids like kuwanon C, cudraflavone B, and kurarinone from plants such as Morus alba and Sophora flavescens. These compounds suppress NO production, iNOS expression, and NF-κB activation in macrophages (Zelová et al., 2014; Hošek et al., 2011). Over 20 papers document their mechanisms, with Zelová et al. (2014) leading at 95 citations.

Curated Papers

Key Challenges

Why It Matters

Prenylated flavonoids offer templates for anti-inflammatory drugs targeting arthritis and IBD by modulating NF-κB and cytokine pathways. Zelová et al. (2014) isolated kuwanon C and E from Morus species, showing potent NO inhibition in LPS-activated macrophages. Hošek et al. (2011) demonstrated cudraflavone B's suppression of iNOS and COX-2, supporting herbal remedies from Morus alba roots. Recent work by Han et al. (2021) on sophoraflavanone M highlights dual NF-κB and JNK/AP-1 inhibition for chronic inflammation models.

Key Research Challenges

Structure-Activity Relationships

Linking prenyl group positions to NF-κB inhibition potency remains unclear across flavonoid scaffolds. Zelová et al. (2014) compared kuwanon C vs. E but lacked quantitative SAR models. Hošek et al. (2011) noted cudraflavone B's selectivity without prenylation variant screens.

In Vivo Translation Gaps

Most data derive from LPS-stimulated macrophages, limiting chronic inflammation models. Cho et al. (2020) showed kushenol C's effects in vitro but called for animal validation. Seo et al. (2012) focused on HeLa cells, highlighting NF-κB-cFLIP needs for immune contexts.

Pathway Crosstalk Mechanisms

Interactions between NF-κB, MAPK, and SIRT1 pathways require dissection. Lee et al. (2013) linked cudraflavone B to MAPK/NF-κB/SIRT1 in cancer cells but not pure inflammation. Han et al. (2021) identified JNK/AP-1 overlap without kinase inhibitor mapping.

Essential Papers

Evaluation of Anti-Inflammatory Activity of Prenylated Substances Isolated from <i>Morus alba</i> and <i>Morus nigra</i>

Hana Zelová, Zuzana Hanáková, Zdeňka Čermáková et al. · 2014 · Journal of Natural Products · 95 citations

Chromatographic separation of root extracts of Morus alba and M. nigra led to the identification of the 2-arylbenzofurans moracin C (1), mulberrofuran Y (2), and mulberrofuran H (3), and the prenyl...

Natural Compound Cudraflavone B Shows Promising Anti-inflammatory Properties in Vitro

Jan Hošek, Milan Bartoš, Stanislav Chudík et al. · 2011 · Journal of Natural Products · 63 citations

Cudraflavone B (1) is a prenylated flavonoid found in large amounts in the roots of Morus alba, a plant used as a herbal remedy for its reputed anti-inflammatory properties. The present study shows...

Kurarinone promotes TRAIL-induced apoptosis by inhibiting NF-κB-dependent cFLIP expression in HeLa cells

Ok-Won Seo, Jung Hwan Kim, Kwang-Soon Lee et al. · 2012 · Experimental & Molecular Medicine · 35 citations

In vitro Anti-Inflammatory and Anti-Oxidative Stress Activities of Kushenol C Isolated from the Roots of Sophora flavescens

Byoung Ok Cho, Denis Nchang, Jisu Kim et al. · 2020 · Molecules · 29 citations

Kushenol C (KC) is a prenylated flavonoid isolated from the roots of Sophora flavescens aiton. Little is known about its anti-inflammatory and anti-oxidative stress activities. Here, we investigate...

Growth Inhibition and Apoptosis-Inducing Effects of Cudraflavone B in Human Oral Cancer Cells via MAPK, NF-κB, and SIRT1 Signaling Pathway

Hwa-Jeong Lee, Q‐Schick Auh, Young-Man Lee et al. · 2013 · Planta Medica · 29 citations

The goal of this study was to investigate the effect and molecular mechanism of cudraflavone B, a prenylated flavonoid isolated from the root bark of Cudrania tricuspidata, against oral squamous ce...

Involvement of the antioxidative property of morusin in blocking phorbol ester–induced malignant transformation of JB6 P+ mouse epidermal cells

Pai‐Shan Cheng, Chao‐Chin Hu, Chau‐Jong Wang et al. · 2017 · Chemico-Biological Interactions · 14 citations

Sophoraflavanone M, a prenylated flavonoid from Sophora flavescens Ait., suppresses pro-inflammatory mediators through both NF-κB and JNK/AP-1 signaling pathways in LPS-primed macrophages

Yixin Han, Xiaoyu Zhang, Yuan Kang et al. · 2021 · European Journal of Pharmacology · 13 citations

Reading Guide

Foundational Papers

Start with Zelová et al. (2014, 95 citations) for Morus prenylated flavonoid isolation and broad screening; Hošek et al. (2011, 63 citations) details cudraflavone B mechanisms; Seo et al. (2012) introduces kurarinone's NF-κB specificity.

Recent Advances

Han et al. (2021) on sophoraflavanone M's dual NF-κB/JNK inhibition; Cho et al. (2020) for kushenol C's oxidative stress links; Su et al. (2024) on macrophage polarization.

Core Methods

Griess assay for NO, qPCR/westerns for cytokines/iNOS/COX-2, luciferase reporters for NF-κB activity, and MAPK inhibitors for pathway validation (Zelová 2014; Hošek 2011).

How PapersFlow Helps You Research Prenylated Flavonoids Anti-inflammatory Mechanisms

Discover & Search

Research Agent uses searchPapers('prenylated flavonoids NF-κB inhibition') to retrieve Zelová et al. (2014) as top hit with 95 citations, then citationGraph to map 50+ citing papers on Morus-derived compounds, and findSimilarPapers to uncover kushenol C analogs from Cho et al. (2020). exaSearch scans for sophoraflavanone variants beyond OpenAlex.

Analyze & Verify

Analysis Agent applies readPaperContent on Zelová et al. (2014) to extract IC50 values for kuwanon C (3.9 μM NO inhibition), verifies NF-κB claims via verifyResponse (CoVe) against raw western blots, and runs PythonAnalysis to plot dose-response curves from supplementary data using pandas/matplotlib. GRADE grading scores Hošek et al. (2011) evidence as high for in vitro replication.

Synthesize & Write

Synthesis Agent detects gaps in SAR data across Zelová (2014) and Cho (2020), flags NF-κB vs. MAPK contradictions, and generates exportMermaid diagrams of pathway inhibition cascades. Writing Agent uses latexEditText for mechanism schematics, latexSyncCitations to integrate 10 papers, and latexCompile for publication-ready reviews.

Use Cases

"Extract and plot IC50 values for NO inhibition by prenylated flavonoids from Morus alba papers."

Research Agent → searchPapers → Analysis Agent → readPaperContent(Zelová 2014) → runPythonAnalysis(pandas plot IC50s from tables) → matplotlib dose-response graph output.

"Write LaTeX review section on cudraflavone B NF-κB mechanisms with citations."

Synthesis Agent → gap detection(Hošek 2011 + Lee 2013) → Writing Agent → latexEditText(draft text) → latexSyncCitations(5 papers) → latexCompile(PDF section with figure).

"Find GitHub repos analyzing prenylated flavonoid docking to NF-κB."

Research Agent → searchPapers('prenylated flavonoids molecular docking') → Code Discovery → paperExtractUrls → paperFindGithubRepo → githubRepoInspect(AutoDock scripts for kurarinone).

Automated Workflows

Deep Research workflow scans 50+ papers via searchPapers on 'prenylated flavonoids anti-inflammatory', structures report with Zelová (2014) as anchor, and applies CoVe checkpoints for pathway claims. DeepScan's 7-step analysis verifies Hošek (2011) iNOS data with GRADE scoring and Python IC50 meta-analysis. Theorizer generates hypotheses on prenyl-NF-κB binding from Seo (2012) and Han (2021) abstractions.

Try Doxa for Prenylated Flavonoids Anti-inflammatory Mechanisms Research

Frequently Asked Questions

What defines prenylated flavonoids in anti-inflammation?

Prenylated flavonoids feature C5/C10 isoprenoid chains enhancing lipophilicity and NF-κB inhibition, as in kuwanon C from Morus alba (Zelová et al., 2014).

What are key methods used?

LPS-stimulated RAW 264.7 macrophages measure NO/iNOS via Griess assay and western blots for NF-κB p65 (Hošek et al., 2011; Cho et al., 2020).

What are seminal papers?

Zelová et al. (2014, 95 citations) identified kuwanon C/E effects; Hošek et al. (2011, 63 citations) validated cudraflavone B's iNOS suppression.

What open problems exist?

In vivo efficacy, prenylation SAR models, and multi-pathway crosstalk need addressing beyond in vitro macrophage data (Lee et al., 2013; Han et al., 2021).