Pterostilbene / Catalase 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


Catalase, Catalase: Click to Expand ⟱
Source:
Type:
Caspases are a cysteine protease that speed up a chemical reaction via pointing their target substrates following an aspartic acid residue.1 They are grouped into apoptotic (caspase-2, 3, 6, 7, 8, 9 and 10) and inflammatory (caspase-1, 4, 5, 11 and 12) mediated caspases.
Caspase-1 may have both tumorigenic or antitumorigenic effects on cancer development and progression, but it depends on the type of inflammasome, methodology, and cancer.
Catalase is an enzyme found in nearly all living cells exposed to oxygen. Its primary role is to protect cells from oxidative damage by catalyzing the conversion of hydrogen peroxide (H₂O₂), a potentially damaging byproduct of metabolism, into water (H₂O) and oxygen (O₂). This detoxification process is crucial because excess H₂O₂ can lead to the formation of reactive oxygen species (ROS) that damage proteins, lipids, and DNA.

Catalase and Cancer
Oxidative Stress and Cancer:
Cancer cells often experience increased levels of oxidative stress due to rapid proliferation and metabolic changes. This stress can lead to DNA damage, promoting tumorigenesis.
Catalase helps mitigate oxidative stress, and its expression can influence the survival and proliferation of cancer cells.
Expression Levels in Different Cancers:
Overexpression: In some cancers, such as breast cancer and certain types of leukemia, catalase may be overexpressed. This overexpression can help cancer cells survive in oxidative environments, potentially leading to more aggressive tumor behavior.
Downregulation: Conversely, in other cancers, such as colorectal cancer, reduced catalase expression has been observed. This downregulation can lead to increased oxidative stress, contributing to tumor progression and metastasis.
Prognostic Implications:
Survival Rates: Studies have shown that high levels of catalase expression can be associated with poor prognosis in certain cancers, as it may enable cancer cells to resist apoptosis (programmed cell death) induced by oxidative stress.

Some types of cancer cells have been reported to exhibit lower catalase activity, possibly increasing their vulnerability to oxidative damage under certain conditions. This vulnerability has even been exploited in some therapeutic strategies (for example, approaches that generate excess H₂O₂ or other ROS specifically targeting cancer cells have been researched).
Scientific Papers found: Click to Expand⟱
4703- PTS,  RES,    Pterostilbene and resveratrol: Exploring their protective mechanisms against skin photoaging - A scoping review
- NA, Nor, NA
*AntiAge↑, *eff↑, *Inflam↓, *AntiCan↑, *ROS↓, *Catalase↑, *GSR↑, *HO-1↑, *NAD↑, *NQO1↑, *SOD↑, *NRF2↑,
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↓,
3929- PTS,    New Insights into Dietary Pterostilbene: Sources, Metabolism, and Health Promotion Effects
- Review, Var, NA - Review, Arthritis, NA
*NRF2↑, *BioAv↑, *ROS↓, *Inflam↓, *HO-1↑, *SOD↑, *Catalase↑, *GPx↑, *lipid-P↓, *hepatoP↑, *neuroP↑, *iNOS↓, *COX2↓, TumMeta↓, SOD2↓, ROS↑, TumCI↓, TumCG↓, HDAC1↓, PTEN↑, BP↓, *GutMicro↑,

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 ⓘ

ROS↑, 1,   SOD2↓, 1,  

Transcription & Epigenetics ⓘ

other↓, 1,  

Proliferation, Differentiation & Cell State ⓘ

HDAC1↓, 1,   PTEN↑, 1,   TumCG↓, 1,  

Migration ⓘ

TumCI↓, 1,   TumMeta↓, 1,  

Clinical Biomarkers ⓘ

BP↓, 1,  
Total Targets: 9

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress ⓘ

antiOx↑, 1,   Catalase↑, 3,   GPx↑, 1,   GSH↑, 1,   GSR↑, 1,   HO-1↑, 2,   lipid-P↓, 2,   NQO1↑, 1,   NRF2↑, 3,   ROS↓, 3,   SOD↑, 3,  

Core Metabolism/Glycolysis ⓘ

LDL↓, 1,   NAD↑, 1,   NADPH↓, 1,   PPARα↑, 1,  

Cell Death ⓘ

iNOS↓, 1,   MAPK↝, 1,  

Migration ⓘ

E-sel↓, 1,   MMPs↓, 1,  

Immune & Inflammatory Signaling ⓘ

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

Drug Metabolism & Resistance ⓘ

BioAv↑, 2,   eff↑, 1,  

Clinical Biomarkers ⓘ

GutMicro↑, 1,  

Functional Outcomes ⓘ

AntiAge↑, 1,   AntiCan↑, 1,   hepatoP↑, 1,   neuroP↑, 1,   toxicity↓, 1,  
Total Targets: 35

Scientific Paper Hit Count for: Catalase, Catalase
3 Pterostilbene
1 Resveratrol
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#:46  State#:%  Dir#:2
  wNotes=0  sortOrder:rid,rpid

 

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