Pterostilbene / GSH Cancer Research Results

PTS, Pterostilbene: Click to Expand ⟱
Features:
Antioxidant found in blueberries, cranberries and grapes.
Pterostilbene (trans-3,5-dimethoxy-40-hydroxystilbene) is a naturally occurring stilbene, found mainly in blueberries and grapes. It is a dimethylated derivative of resveratrol with comparable antioxidant, anti-inflammatory and anticarcinogenic properties [26].
-more bioavailable than resveratrol
-Antioxidant activity: Reduces reactive oxygen species and lipid peroxidation
-Anti-inflammatory: Downregulates pro-inflammatory cytokines- IL-1β, TNF-α, NF-κB
-Amyloid pathology:inhibits Aβ aggregation and promotes clearance- Aβ, APP, BACE1
-Reduces hyperphosphorylation of tau protein
-Inhibits histone deacetylases (HDACs)
-Increases acetylcholine by inhibiting acetylcholinesterase
-Sirtuin activation

Rank Pathway / Axis Cancer Cells Normal Cells Label Primary Interpretation Notes
1 SIRT1 / AMPK metabolic sensing ↑ AMPK; context-dependent SIRT1 modulation ↑ SIRT1 / ↑ AMPK Driver Energy-stress signaling Pterostilbene strongly engages energy-sensing pathways due to high bioavailability
2 PI3K → AKT → mTOR axis ↓ AKT / ↓ mTOR ↔ adaptive suppression Driver Growth and survival inhibition AKT/mTOR suppression explains cytostatic and pro-apoptotic effects in cancer cells
3 Reactive oxygen species (ROS) ↑ ROS (mild, dose-dependent) ↓ ROS / buffered Conditional Driver Biphasic redox modulation More balanced redox profile than resveratrol; weaker pro-oxidant behavior
4 Mitochondrial integrity / intrinsic apoptosis ↓ ΔΨm; ↑ caspase activation ↔ preserved Secondary Execution of apoptosis Mitochondrial apoptosis follows metabolic and redox stress
5 NF-κB signaling ↓ NF-κB activation ↓ inflammatory NF-κB tone Secondary Suppression of inflammatory survival programs NF-κB inhibition contributes to anti-invasive and chemosensitizing effects
6 Cell cycle regulation ↑ G1 or G2/M arrest ↔ spared Phenotypic Cytostatic growth control Cell-cycle arrest reflects upstream metabolic and signaling effects
7 NRF2 antioxidant response ↑ NRF2 (adaptive) ↑ NRF2 (protective) Adaptive Redox compensation NRF2 activation contributes to stress buffering rather than primary cytotoxicity


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⟱
3924- PTS,    Effect of resveratrol and pterostilbene on aging and longevity
- Review, AD, NA - Review, Stroke, NA
*antiOx↓, *ROS↑, *SOD↑, *GSH↑, *NRF2↑, *MDA↓, *HNE↓, *Inflam↓, *MAPK↓, *IL6↓, *TNF-α↓, *HO-1↑, *cardioP↑, *neuroP↑, *CRM↑, *NLRP3↓,
3927- PTS,    Effects of Pterostilbene on Cardiovascular Health and Disease
- Review, AD, NA - Review, Stroke, NA
*Inflam↓, *antiOx↑, *BioAv↑, *toxicity↓, *NADPH↓, *ROS↓, *Catalase↑, *GSH↑, *SOD↑, *TNF-α↓, *IL1β↓, *IL4↓, *MMPs↓, *COX2↓, *MAPK↝, *NF-kB↓, *IL8↓, *MCP1↓, *E-sel↓, *lipid-P↓, *NRF2↑, *PPARα↑, *LDL↓, other↓,
3930- PTS,    A Review of Pterostilbene Antioxidant Activity and Disease Modification
- Review, Var, NA - Review, adrenal, NA - Review, Stroke, NA
*BioAv↑, *antiOx↑, *neuroP↑, *Inflam↓, *ROS↓, *H2O2↓, *GSH↑, *GPx↑, *GSR↑, *SOD↑, TumCG↓, PTEN↑, HGF/c-Met↓, PI3K↓, Akt↓, NF-kB↓, TumMeta↓, MMP2↓, MMP9↓, Ki-67↓, Casp3↑, MMP↓, H2O2↑, ROS↑, ChemoSen↑, *cardioP↑, *CDK2↓, *CDK4↓, *cycE/CCNE↓, *cycD1/CCND1↓, *RB1↓, *PCNA↓, *CREB↑, *GABA↑, *memory↑, *IGF-1↑, *ERK↑, TIMP1↑, BAX↑, Cyt‑c↑, Diablo↑, SOD2↑,

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:


Redox & Oxidative Stress

H2O2↑, 1,   ROS↑, 1,   SOD2↑, 1,  

Mitochondria & Bioenergetics

MMP↓, 1,  

Cell Death

Akt↓, 1,   BAX↑, 1,   Casp3↑, 1,   Cyt‑c↑, 1,   Diablo↑, 1,   HGF/c-Met↓, 1,  

Transcription & Epigenetics

other↓, 1,  

Proliferation, Differentiation & Cell State

PI3K↓, 1,   PTEN↑, 1,   TumCG↓, 1,  

Migration

Ki-67↓, 1,   MMP2↓, 1,   MMP9↓, 1,   TIMP1↑, 1,   TumMeta↓, 1,  

Immune & Inflammatory Signaling

NF-kB↓, 1,  

Drug Metabolism & Resistance

ChemoSen↑, 1,  

Clinical Biomarkers

Ki-67↓, 1,  
Total Targets: 22

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress

antiOx↓, 1,   antiOx↑, 2,   Catalase↑, 1,   GPx↑, 1,   GSH↑, 3,   GSR↑, 1,   H2O2↓, 1,   HNE↓, 1,   HO-1↑, 1,   lipid-P↓, 1,   MDA↓, 1,   NRF2↑, 2,   ROS↓, 2,   ROS↑, 1,   SOD↑, 3,  

Core Metabolism/Glycolysis

CREB↑, 1,   CRM↑, 1,   LDL↓, 1,   NADPH↓, 1,   PPARα↑, 1,  

Cell Death

MAPK↓, 1,   MAPK↝, 1,  

DNA Damage & Repair

PCNA↓, 1,  

Cell Cycle & Senescence

CDK2↓, 1,   CDK4↓, 1,   cycD1/CCND1↓, 1,   cycE/CCNE↓, 1,   RB1↓, 1,  

Proliferation, Differentiation & Cell State

ERK↑, 1,   IGF-1↑, 1,  

Migration

E-sel↓, 1,   MMPs↓, 1,  

Immune & Inflammatory Signaling

COX2↓, 1,   IL1β↓, 1,   IL4↓, 1,   IL6↓, 1,   IL8↓, 1,   Inflam↓, 3,   MCP1↓, 1,   NF-kB↓, 1,   TNF-α↓, 2,  

Synaptic & Neurotransmission

GABA↑, 1,  

Protein Aggregation

NLRP3↓, 1,  

Drug Metabolism & Resistance

BioAv↑, 2,  

Clinical Biomarkers

IL6↓, 1,  

Functional Outcomes

cardioP↑, 2,   memory↑, 1,   neuroP↑, 2,   toxicity↓, 1,  
Total Targets: 49

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

 

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