BRS3-FM1-PM1 - NF-kB Signalling Regulation
1. Definition
Regulation of the NF-kB inflammatory transcription pathway that drives pro-inflammatory gene expression.
This PM captures an upstream inflammatory-control node through which diet can influence transcriptional tone rather than downstream symptom expression alone.
2. Target Functional Outcome / Phenome
These mappings are translational relationships, not single-mechanism outcome claims. Phenomes are emergent functional patterns supported by multiple interacting PMs across the BRAIN Framework.
No direct functional outcome relationship currently mapped.
3. Intervention Breakdown
Food-State Dominant
4. Functional Role
↓ inflammatory transcriptional activation
5. Mechanistic Basis
Summary
When inflammatory transcriptional programmes remain engaged, downstream cytokine and immune-signalling tone escalates. NF-κB is a principal upstream node through which those programmes are expressed within BRS3(FM1) - Anti-Inflammatory Signalling Tone.
NF-κB signalling and inflammatory transcription
(NF-κB as an inflammatory transcriptional node)
NF-κB regulates expression of multiple pro-inflammatory genes and sits upstream of cytokine and immune-signalling cascades that shape BRS3 inflammatory tone.
(Signalling pressure and pattern context)
Endotoxin exposure, oxidative signalling load, and meal-level inflammatory context can increase or decrease activation pressure on NF-κB transcriptional programmes. This PM focuses on how sustained dietary-pattern differences shift that pressure rather than on isolated nutrient boluses.
(Boundaries of the mechanism)
Downstream cytokine-network expression is handled by BRS3-FM3-PM7 - Cytokine Network Modulation. Gut-derived endotoxin load is represented by BRS3-FM1-PM2 - Gut-Derived Inflammatory Signalling. Endogenous antioxidant induction and net redox balance belong to BRS3-FM2-PM5 - Nrf2-ARE Antioxidant Activation and BRS3-FM2-PM6 - ROS Generation vs Clearance Balance.
(Integration within BRS3)
This PM anchors transcriptional inflammatory tone within BRS3(FM1), drawing on BRS3(KC1) - Antioxidant Substrate Availability and BRS3(KC3) - Essential Fatty Acid Balance. Gut-barrier context imported through BRS5-FM1-PM1 - Gut Barrier / Tight Junction Integrity conditions endotoxin-linked pressure on this pathway.
5.1 Evidence Highlights
Introduction/Summary
The NF-κB transcriptional node is well characterised. The studies below do not restate pathway biology; they show that dietary patterns measurably shift inflammatory signalling contexts relevant to this PM.
Evidence highlights — NF-κB and dietary inflammatory tone
- Polyphenol-rich dietary-pattern interventions report shifts in inflammatory biomarkers consistent with lower pro-inflammatory signalling pressure → Zelicha et al. (2022) [2]
- Lipopolysaccharide-linked inflammatory signalling is modulated by dietary and postprandial context, linking meal patterns to systemic inflammatory load → Batey et al. (2024) [1]
- Intervention findings support pattern-based dietary levers rather than single-meal or single-nutrient anti-inflammatory dosing as the practical frame for this PM → Batey et al. (2024) [1]; Zelicha et al. (2022) [2]
6. Connected BRS3 Mechanisms
6.1 Overarching Functional Mechanism
6.2 Connected Primary Mechanisms
7. Connected Mechanisms
8. Dietary Levers
8.1 Direct Dietary Levers
- NF-kB-modulating polyphenols ← berries, green tea, extra virgin olive oil
- EPA/DHA ← oily fish
- Fibre-rich whole-food patterns ← legumes, oats, vegetables
8.2 Cofactors and Supporting Inputs
- polyphenols
- omega-3
- magnesium
8.3 KCs (Key Constraints)
9. Lifestyle Levers
Lifestyle
- Reducing ultra-processed food exposure may help lower postprandial inflammatory burden where this PM is relevant.
- Regular meal timing and stable daily dietary patterning matter more than isolated anti-inflammatory meals.
10. Scoreable Inputs & Modulation Signals
This PM is scoreable through food-state and nutrient signals relevant to inflammatory signalling tone.
Scoreable Input Categories
| Input Category | Example Inputs | PM1 Relevance |
|---|---|---|
| Functional Property Potentials | polyphenol_density; omega3_pattern; gut_barrier_support | May support lower NF-kB signalling pressure. |
| Realised Functional States | antioxidant_rich_meal; marine_fat_pattern; fibre_buffered_meal | Represent recipe-level inflammatory-tone support. |
| Preparation Transformations | minimally_processed; extra_virgin_olive_oil_use; lower_frying_load | May preserve anti-inflammatory food-state effects. |