Piperine / GSH 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)


GSH, Glutathione: Click to Expand ⟱
Source:
Type:
Glutathione (GSH) is a thiol antioxidant that scavenges reactive oxygen species (ROS), resulting in the formation of oxidized glutathione (GSSG). Decreased amounts of GSH and a decreased GSH/GSSG ratio in tissues are biomarkers of oxidative stress.
Glutathione is a powerful antioxidant found in every cell of the body, composed of three amino acids: cysteine, glutamine, and glycine. It plays a crucial role in protecting cells from oxidative stress, detoxifying harmful substances, and supporting the immune system.
cancer cells can have elevated levels of glutathione, which may help them survive in the oxidative environment created by the immune response and chemotherapy. This can make cancer cells more resistant to treatment.
While glutathione can be obtained from certain foods (like fruits, vegetables, and meats), its absorption from supplements is debated. Some people take N-acetylcysteine (NAC) or other precursors to boost glutathione levels, but the effects on cancer prevention or treatment are still being studied.
Depleting glutathione (GSH) to raise reactive oxygen species (ROS) is a strategy that has been explored in cancer research and therapy.
Many cancer cells have altered redox states and may rely on GSH to survive. Increasing ROS levels can induce stress in these cells, potentially leading to cell death.
Certain drugs and compounds can deplete GSH levels. For example, agents like buthionine sulfoximine (BSO) inhibit the synthesis of GSH, leading to its depletion.
Cancer cells tend to exhibit higher levels of intracellular GSH, possibly as an adaptive response to a higher metabolism and thus higher steady-state levels of reactive oxygen species (ROS).

"...intracellular glutathione (GSH) exhibits an astounding antioxidant activity in scavenging reactive oxygen species (ROS)..."
"Cancer cells have a high level of GSH compared to normal cells."
"...cancer cells are affluent with high antioxidant levels, especially with GSH, whose appearance at an elevated concentration of ∼10 mM (10 times less in normal cells) detoxifies the cancer cells." "Therefore, GSH depletion can be assumed to be the key strategy to amplify the oxidative stress in cancer cells, enhancing the destruction of cancer cells by fruitful cancer therapy."

The loss of GSH is broadly known to be directly related to the apoptosis progression.
Scientific Papers found: Click to Expand⟱
1257- PI,    Piperlongumine attenuates bile duct ligation-induced liver fibrosis in mice via inhibition of TGF-β1/Smad and EMT pathways
- ex-vivo, LiverDam, NA
*Fibronectin↓, *α-SMA↓, *COL1↓, *COL3A1↓, *TGF-β↓, *EMT↓, *MMP2↓, *α-SMA↓, *Smad7↑, *E-cadherin↑, *Vim↓, *hepatoP↑, *antiOx↑, *GSH↑, *ROS↓,
3587- PI,    Piperine: A review of its biological effects
- Review, Park, NA - Review, AD, NA
*hepatoP↑, *Inflam↓, *neuroP↑, *antiOx↑, *angioG↑, *cardioP↑, *BioAv↑, *P450↓, *eff↑, *BioAv↑, E-cadherin↓, ER(estro)↓, MMP2↓, MMP9↓, VEGF↓, cMyc↓, BAX↑, P53↑, TumCG↓, OS↑, *cognitive↑, *GSK‐3β↓, *GSH↑, *Casp3↓, *Casp9↓, *Cyt‑c↓, *lipid-P↓, *motorD↑, *AChE↓, *memory↑, *cardioP↑, *ROS↓, *PPARγ↑, *ALAT↓, *AST↓, *ALP↓, *AMPK↑, *5HT↑, *SIRT1↑, *eff↑,
3596- PI,    Antioxidant efficacy of black pepper (Piper nigrum L.) and piperine in rats with high fat diet induced oxidative stress
- in-vivo, Nor, NA
*TBARS↑, *SOD↑, *Catalase↑, *GSTs↑, *GPx↑, *GSH↑, *ROS↓,

Showing Research Papers: 1 to 3 of 3

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 3

Pathway results for Effect on Cancer / Diseased Cells:


Core Metabolism/Glycolysis ⓘ

cMyc↓, 1,  

Cell Death ⓘ

BAX↑, 1,  

DNA Damage & Repair ⓘ

P53↑, 1,  

Proliferation, Differentiation & Cell State ⓘ

TumCG↓, 1,  

Migration ⓘ

E-cadherin↓, 1,   MMP2↓, 1,   MMP9↓, 1,  

Angiogenesis & Vasculature ⓘ

VEGF↓, 1,  

Hormonal & Nuclear Receptors ⓘ

ER(estro)↓, 1,  

Functional Outcomes ⓘ

OS↑, 1,  
Total Targets: 10

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress ⓘ

antiOx↑, 2,   Catalase↑, 1,   GPx↑, 1,   GSH↑, 3,   GSTs↑, 1,   lipid-P↓, 1,   ROS↓, 3,   SOD↑, 1,   TBARS↑, 1,  

Core Metabolism/Glycolysis ⓘ

ALAT↓, 1,   AMPK↑, 1,   PPARγ↑, 1,   SIRT1↑, 1,  

Cell Death ⓘ

Casp3↓, 1,   Casp9↓, 1,   Cyt‑c↓, 1,  

Proliferation, Differentiation & Cell State ⓘ

EMT↓, 1,   GSK‐3β↓, 1,  

Migration ⓘ

COL1↓, 1,   COL3A1↓, 1,   E-cadherin↑, 1,   Fibronectin↓, 1,   MMP2↓, 1,   Smad7↑, 1,   TGF-β↓, 1,   Vim↓, 1,   α-SMA↓, 2,  

Angiogenesis & Vasculature ⓘ

angioG↑, 1,  

Immune & Inflammatory Signaling ⓘ

Inflam↓, 1,  

Synaptic & Neurotransmission ⓘ

5HT↑, 1,   AChE↓, 1,  

Drug Metabolism & Resistance ⓘ

BioAv↑, 2,   eff↑, 2,   P450↓, 1,  

Clinical Biomarkers ⓘ

ALAT↓, 1,   ALP↓, 1,   AST↓, 1,  

Functional Outcomes ⓘ

cardioP↑, 2,   cognitive↑, 1,   hepatoP↑, 2,   memory↑, 1,   motorD↑, 1,   neuroP↑, 1,  
Total Targets: 43

Scientific Paper Hit Count for: GSH, Glutathione
3 Piperine
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#:137  State#:%  Dir#:2
  wNotes=0  sortOrder:rid,rpid

 

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