Oleuropein / IL8 Cancer Research Results

OLE, Oleuropein: Click to Expand ⟱
Features:
Oleocanthal is essentially found ONLY in: Fresh, unrefined extra-virgin olive oil (EVOO)
It is part of the pungent, throat-stinging phenolic fraction that disappears in refined oils.

Oleuropein (OLEU) — a secoiridoid polyphenol from olive leaf and olive fruit/extra-virgin olive oil; major in-vivo related phenolic is hydroxytyrosol (via hydrolysis/metabolism). Sources: olive leaf extract (standardized to oleuropein), EVOO phenolics.

Primary mechanisms (conceptual rank):
1) Redox modulation (ROS ↓ in normal tissue; stress/hormesis; NRF2 ↑ context-dependent)
2) Anti-inflammatory transcription suppression (NF-κB ↓)
3) Anti-proliferative signaling in cancer models (PI3K/AKT/mTOR ↓; MAPK modulation; apoptosis ↑; model-dependent)
4) Anti-angiogenic / hypoxia coupling (HIF-1α/VEGF ↓; model-dependent)

Bioavailability / PK relevance: Human data show absorption/metabolism after oral olive leaf extract; circulating forms are largely metabolites (and hydroxytyrosol-related), with limited free parent compound exposure. :contentReference[oaicite:0]{index=0}

In-vitro vs oral exposure: Many direct “anticancer” cytotoxic effects occur at micromolar concentrations that may exceed typical systemic exposure from supplements/foods (high concentration only for direct tumor cytotoxicity in many models). :contentReference[oaicite:1]{index=1}

Clinical evidence status: Nutraceutical/food bioactive with human data mainly for cardiometabolic/inflammation endpoints; oncology evidence largely preclinical/adjunct-hypothesis (no oncology approval).

Also available as a supplement usually labeled as Olive Leaf Extract. (20-50% concentrations)
- commonly used in CSC (Cancer Stem Cell) research.
Main CSC mechanisms:
-Inhibits Wnt/β-catenin — a core CSC survival pathway
-↓ALDH (Reduces ALDH-high CSC subpopulations)
-downregulates stemness geens: SOX2/OCT4/Nanog → reduced sphere formation/self-renewal.

Oleuropein — Cancer vs Normal Cell Pathway Map

RankPathway / AxisCancer CellsNormal CellsTSFPrimary EffectNotes / Interpretation
1ROS ↑ or ↓ (dose-/model-dependent)↓ (primary)P/R Redox reprogramming Normal tissue: antioxidant/lipid-peroxidation reduction common. Cancer: higher exposures can induce stress/apoptosis; direction varies by model and co-stressors.
2NF-κB / cytokine programs ↓↓R/G Anti-inflammatory / anti-survival transcription Commonly reported mechanism for oleuropein/olive phenolics. :contentReference[oaicite:3]{index=3}
3NRF2 (protective vs resistance role) ↔ / ↑ (context-dependent)↑R/G Antioxidant gene induction NRF2 modulation is frequently discussed for olive polyphenols; in cancer contexts can be double-edged (cytoprotection/resistance). :contentReference[oaicite:4]{index=4}
4PI3K/AKT/mTOR ↓ (model-dependent; high concentration only)↔R/G Reduced anabolic survival signaling Reported across cancer models and olive phenolic literature; translation depends on exposure. :contentReference[oaicite:5]{index=5}
5Intrinsic apoptosis (Bax↑/Bcl-2↓; caspases) ↑ (model-dependent; high concentration only)↔R/G Mitochondrial apoptosis Common downstream endpoint in preclinical cancer work; often coupled to redox and PI3K/AKT shifts. :contentReference[oaicite:6]{index=6}
6HIF-1α / VEGF (angiogenesis) ↓ (model-dependent)↔G Reduced hypoxia-adaptation / vascular support Typically secondary; varies strongly by model and readout.
7Cell cycle checkpoints ↓ proliferation (model-dependent)↔G Cytostatic growth restraint Often reported as G0/G1 or G2/M arrest in vitro; exposure gap is common. :contentReference[oaicite:7]{index=7}
8Ferroptosis ↔ (limited / context-dependent)↔R/G Not canonical Olive phenolics can influence lipid peroxidation, but a consistent oleuropein-driven ferroptosis program is not a core claim in the main reviews.
9Ca²⁺ signaling ↔↔P/R No primary role Include only if a specific ER/mitochondrial stress model measures Ca²⁺ endpoints.
10Clinical Translation Constraint ↓ (constraint)↓ (constraint)— Metabolite-dominant exposure Human absorption/metabolism exists, but many tumor-directed effects rely on higher in-vitro exposures; extract standardization and formulation matter. :contentReference[oaicite:8]{index=8}

TSF legend: P: 0–30 min; R: 30 min–3 hr; G: >3 hr



Oleuropein — AD relevance: Oleuropein/olive leaf phenolics show neuroprotection in models via oxidative- and heat-shock/proteostasis stress responses, with reported reduction of Aβ and tau proteotoxicity in preclinical systems; human AD disease-modifying evidence is not established.

Primary mechanisms (conceptual rank):
1) ↓ Oxidative stress (ROS ↓; lipid peroxidation ↓; NRF2-linked defense ↑)
2) ↓ Neuroinflammation (NF-κB tone ↓)
3) Proteostasis support (heat-shock/stress-response pathways; context-dependent)
4) Aβ/tau proteotoxicity ↓ (preclinical)

Bioavailability / PK relevance: Human absorption/metabolism supports systemic exposure mainly as metabolites; brain relevance likely chronic/adaptive. :contentReference[oaicite:9]{index=9}

Clinical evidence status: Predominantly preclinical for AD mechanisms; limited AD-specific clinical endpoint evidence.

Oleuropein — AD / Neurodegeneration Pathway Map

RankPathway / AxisCellsTSFPrimary EffectNotes / Interpretation
1ROS / lipid peroxidation ↓P/R Reduced oxidative burden Central neuroprotection rationale for olive polyphenols (includes oleuropein/hydroxytyrosol pathways). :contentReference[oaicite:11]{index=11}
2NRF2 axis ↑ (context-dependent)R/G Stress-defense upshift NRF2 modulation is repeatedly discussed for olive polyphenols in cognition-related health framing. :contentReference[oaicite:12]{index=12}
3Neuroinflammation (NF-κB / cytokines) ↓R/G Lower inflammatory stress Often paired with antioxidant effects; model-dependent magnitude.
4Proteostasis / heat-shock stress responses ↑ (supportive)R/G Improved handling of misfolded proteins Oleuropein-rich olive leaf extract reduced Aβ and tau proteotoxicity via oxidative/heat-shock stress regulation in a C. elegans model. :contentReference[oaicite:13]{index=13}
5Aβ / tau proteotoxicity ↓ (preclinical)G Reduced pathology-linked toxicity Evidence is stronger in models than in biomarker-confirmed human AD studies. :contentReference[oaicite:14]{index=14}
6Ca²⁺ homeostasis / excitotoxic vulnerability ↔ / stabilized (indirect)P/R Supportive (secondary) Typically secondary to mitochondrial/redox support unless a study explicitly measures Ca²⁺ endpoints.
7Clinical Translation Constraint ↓ (constraint)— Preclinical-dominant AD evidence Most AD-relevant mechanisms are model-based; human AD efficacy endpoints remain limited. :contentReference[oaicite:15]{index=15}

TSF legend: P: 0–30 min; R: 30 min–3 hr; G: >3 hr
IL8, Interleukin-8: Click to Expand ⟱
Source:
Type:
Interleukin-8 (IL-8), also known as CXCL8, is a chemokine primarily involved in the recruitment and activation of neutrophils. Its role in cancer is significant, as it can influence tumor growth, metastasis, and the tumor microenvironment.
IL-8 is a chemokine frequently produced in the tumor microenvironment by human malignant cells. IL-8 plays key roles in the immunobiology of human malignancies and resistance to treatments. Circulating IL-8 concentration reflects tumor burden.

In many cancers have elevated levels of IL-8 and are associated with increased tumor aggressiveness, metastasis, and poorer overall survival. Elevated IL-8 often correlates with a more inflammatory tumor microenvironment, which can facilitate tumor progression.
Scientific Papers found: Click to Expand⟱
4631- OLE,    Evidence to Support the Anti-Cancer Effect of Olive Leaf Extract and Future Directions
- Review, Var, NA
TumCP↓, *BioAv↑, *ROS↓, *NO↓, NF-kB↓, COX2↓, IL6↓, IL8↓, IL1β↓,

Showing Research Papers: 1 to 1 of 1

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 1

Pathway results for Effect on Cancer / Diseased Cells:


Migration ⓘ

TumCP↓, 1,  

Immune & Inflammatory Signaling ⓘ

COX2↓, 1,   IL1β↓, 1,   IL6↓, 1,   IL8↓, 1,   NF-kB↓, 1,  

Clinical Biomarkers ⓘ

IL6↓, 1,  
Total Targets: 7

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress ⓘ

ROS↓, 1,  

Angiogenesis & Vasculature ⓘ

NO↓, 1,  

Drug Metabolism & Resistance ⓘ

BioAv↑, 1,  
Total Targets: 3

Scientific Paper Hit Count for: IL8, Interleukin-8
Query results interpretion may depend on "conditions" listed in the research papers.
Such Conditions may include : 
  -low or high Dose
  -format for product, such as nano of lipid formations
  -different cell line effects
  -synergies with other products 
  -if effect was for normal or cancerous cells

Filter Conditions: Pro/AntiFlg:%  IllCat:%  CanType:%  Cells:%  prod#:375  Target#:368  State#:%  Dir#:1
  wNotes=0  sortOrder:rid,rpid

 

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