Piperine / COX2 Cancer Research Results

PI, Piperine: Click to Expand ⟱
Features:
Compound of black pepper that boosts bioavailability of curcumin

piperine’s bioenhancing function, often more important than piperine’s direct anticancer activity 
Mechanisms of bioenhancement
| Mechanism                     | Effect                             |
| ----------------------------- | ---------------------------------- |
| **↓ CYP3A4, CYP2C9**          | Slows metabolic clearance          |
| **↓ UGT (glucuronidation)**   | Increases parent compound exposure |
| **↓ P-glycoprotein (ABCB1)**  | Improves intracellular retention   |
| **↑ Intestinal permeability** | Better oral absorption             |

-Curcumin: ↑ bioavailability ~20–30×
-Resveratrol, EGCG, quercetin: ↑ exposure 2–10×

Primary pathways: NF-κB, STAT3, PI3K/Akt/mTOR, apoptosis, EMT
Direct anticancer potency: modest
Bioenhancing value: central and often dominant
Rank Pathway / Target Axis Direction Primary Effect Notes / Cancer Relevance Ref
1 Wnt / β-catenin signaling ↓ Wnt/β-catenin (↓ β-catenin nuclear program) Growth & stemness suppression Piperine suppresses canonical Wnt signaling and shows anti-cancer effects in colorectal cancer cells (ref)
2 PI3K → AKT survival signaling ↓ PI3K/AKT signaling Reduced survival / increased apoptosis Gastric cancer study concludes piperine inhibits proliferation and induces apoptosis through inhibition of PI3K/Akt signaling (ref)
3 AKT → mTOR axis ↓ Akt/mTOR Anti-growth + anti-migration Piperine downregulates Akt/mTOR signaling with associated inhibition of migration and MMP-9 expression (ref)
4 NF-κB transcriptional program ↓ NF-κB activation Reduced inflammatory / pro-survival gene expression Piperine is reported as a potent inhibitor of NF-κB and related transcription factor activity in melanoma cells (ref)
5 STAT3 → Snail EMT axis ↓ STAT3 / ↓ Snail → ↓ EMT Anti-migration / anti-invasion Piperine inhibits colorectal cancer migration/invasion through a STAT3/Snail-mediated EMT mechanism (ref)
6 Multidrug resistance transporter ABCB1 (P-gp) ↓ P-gp-mediated efflux (chemosensitization) Improved chemo response (MDR reversal) Demonstrates piperine has chemosensitizing activity in P-gp–mediated MDR models (piperine characterized as P-gp substrate/modulator) (ref)
7 ROS / oxidative stress ↑ ROS Upstream stress trigger Piperine induces oxidative stress in cancer cells (ROS increase shown) and links it to growth inhibition/apoptosis (ref)
8 Intrinsic apoptosis (caspase activation) ↑ apoptosis Programmed cell death HeLa study: piperine induces apoptosis in a dose-dependent manner with apoptosis markers reported (ref)
9 Autophagy-dependent cell death (ROS–Akt/mTOR coupling) ↑ autophagy-dependent death (with ↓ Akt/mTOR) Stress-lethal program Colon cancer study: piperine induces autophagy-dependent cell death by increasing ROS and inhibiting Akt/mTOR signaling (ref)
10 Cell-cycle progression ↑ cell-cycle arrest (context-dependent) Proliferation blockade Rectal cancer cell study: piperine impairs cell-cycle progression and produces cytostatic/cytotoxic effects (ref)
11 Migration / invasion (MMP-9 axis) ↓ migration / ↓ MMP-9 Anti-metastatic phenotype Piperine suppresses migration with MMP-9 downregulation and Akt/mTOR inhibition (ref)
12 In vivo chemosensitization (doxorubicin) ↑ doxorubicin sensitivity Enhanced therapeutic efficacy Study evaluates piperine as an adjuvant to enhance doxorubicin sensitivity in triple-negative breast cancer models (ref)


COX2, cycloocygenase-2 (Cox-2) mRNA and Cox-2 protein: Click to Expand ⟱
Source: HalifaxProj(inhibit)
Type:
Cyclooxygenase-2 (COX-2) is an enzyme that plays a critical role in the conversion of arachidonic acid to prostaglandins, which are lipid compounds involved in various physiological processes, including inflammation, pain, and fever. COX-2 is an inducible enzyme, meaning its expression is typically low in normal tissues but can be upregulated in response to inflammatory stimuli, growth factors, and certain oncogenic signals.
-Cyclooxygenase-2 (COX-2), the rate-limiting enzyme in prostaglandin biosynthesis, plays a key role in inflammation and circulatory homeostasis.
-COX-2 is an inducible enzyme that is upregulated in response to pro-inflammatory signals, including cytokines (e.g., IL-1β, TNF-α) and growth factors.

COX-2 is often overexpressed in various tumors, including colorectal, breast, lung, and prostate cancers.
The prostaglandins produced by COX-2, particularly prostaglandin E2 (PGE2), have several effects that can facilitate cancer progression:
Cell Proliferation: PGE2 can promote the proliferation of cancer cells by activating signaling pathways such as the PI3K/Akt and MAPK pathways.
Nonselective NSAIDs, such as aspirin and ibuprofen, inhibit both COX-1 and COX-2. Epidemiological studies have suggested that regular use of NSAIDs may reduce the risk of certain cancers, particularly colorectal cancer.
Drugs specifically targeting COX-2, such as celecoxib, have been developed.

COX-2 and xanthine oxidase are ROS-producing pro-oxidant enzymes that contribute to inflammation. Elevated COX‑2 levels, often found in inflammatory conditions or certain types of cancers, can contribute to increased production of ROS.
Scientific Papers found: Click to Expand⟱
3597- PI,    Chronic diseases, inflammation, and spices: how are they linked?
- Review, AD, NA - Review, Park, NA - Review, Var, NA
*NF-kB↓, *MAPK↓, *AP-1↓, *COX2↓, *NOS2↓, *IL1β↓, *TNF-α↓, *PGE2↓, *STAT3↓, *IL10↑, *IL4↓, *IL5↓, P53↑, MMP9↓, MMP2↓, cMyc↓, VEGF↓, STAT3↓, survivin↓, p65↓,
1162- PI,    Piperine Inhibits the Activities of Platelet Cytosolic Phospholipase A2 and Thromboxane A2 Synthase without Affecting Cyclooxygenase-1 Activity: Different Mechanisms of Action Are Involved in the Inhibition of Platelet Aggregation and Macrophage Inflammatory Response
- in-vitro, NA, NA
*cPLA2↓, TXA2↓, COX2↓, PGE2↓, PGD2↓,
1255- PI,  ALA,    Antileukemic effects of piperlongumine and alpha lipoic acid combination on Jurkat, MEC1 and NB4 cells in vitro
- in-vitro, CLL, NA
COX2↓, Casp3↑,
1258- PI,    Piperlongumine Alleviates Mouse Colitis and Colitis-Associated Colorectal Cancer
- in-vivo, CRC, NA
COX2↓, IL6↓, EMT↓, β-catenin/ZEB1↓, Snail↓, Symptoms∅,
3589- PI,    Anti-inflammatory and antiarthritic effects of piperine in human interleukin 1β-stimulated fibroblast-like synoviocytes and in rat arthritis models
- in-vivo, Arthritis, NA
*IL6↓, *MMP13↓, *PGE2↓, *AP-1↓, *Inflam↓, *5LO↓, *COX1↓, *COX2↓, *ERK↓, *BioEnh↑,

Showing Research Papers: 1 to 5 of 5

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 5

Pathway results for Effect on Cancer / Diseased Cells:


Core Metabolism/Glycolysis ⓘ

cMyc↓, 1,  

Cell Death ⓘ

Casp3↑, 1,   survivin↓, 1,  

DNA Damage & Repair ⓘ

P53↑, 1,  

Proliferation, Differentiation & Cell State ⓘ

EMT↓, 1,   STAT3↓, 1,  

Migration ⓘ

MMP2↓, 1,   MMP9↓, 1,   Snail↓, 1,   β-catenin/ZEB1↓, 1,  

Angiogenesis & Vasculature ⓘ

TXA2↓, 1,   VEGF↓, 1,  

Immune & Inflammatory Signaling ⓘ

COX2↓, 3,   IL6↓, 1,   p65↓, 1,   PGD2↓, 1,   PGE2↓, 1,  

Clinical Biomarkers ⓘ

IL6↓, 1,  

Functional Outcomes ⓘ

Symptoms∅, 1,  
Total Targets: 19

Pathway results for Effect on Normal Cells:


Core Metabolism/Glycolysis ⓘ

cPLA2↓, 1,  

Cell Death ⓘ

MAPK↓, 1,  

Proliferation, Differentiation & Cell State ⓘ

ERK↓, 1,   STAT3↓, 1,  

Migration ⓘ

5LO↓, 1,   AP-1↓, 2,   MMP13↓, 1,  

Immune & Inflammatory Signaling ⓘ

COX1↓, 1,   COX2↓, 2,   IL10↑, 1,   IL1β↓, 1,   IL4↓, 1,   IL5↓, 1,   IL6↓, 1,   Inflam↓, 1,   NF-kB↓, 1,   PGE2↓, 2,   TNF-α↓, 1,  

Drug Metabolism & Resistance ⓘ

BioEnh↑, 1,  

Clinical Biomarkers ⓘ

IL6↓, 1,   NOS2↓, 1,  
Total Targets: 21

Scientific Paper Hit Count for: COX2, cycloocygenase-2 (Cox-2) mRNA and Cox-2 protein
5 Piperine
1 Alpha-Lipoic-Acid
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#:133  Target#:66  State#:%  Dir#:%
  wNotes=0  sortOrder:rid,rpid

 

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