Pterostilbene / PKM1 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


PKM1, pyruvate kinase muscle isoform 1: Click to Expand ⟱
Source:
Type:
PKM1 (pyruvate kinase muscle isoform 1) is one of the isoenzymes of pyruvate kinase that drives the final step of glycolysis by converting phosphoenolpyruvate to pyruvate, with concomitant ATP production. Unlike PKM2, which is well known for its role in cancer metabolism (often favoring anabolic processes and rapid proliferation), PKM1 is constitutively active and promotes a more oxidative metabolism.

• In many cancers, a metabolic switch is observed where PKM2 is preferentially expressed to allow for metabolic flexibility and support biosynthetic needs. As a result, PKM1 is less frequently expressed in these tumor types.

• However, some studies have reported contexts in which a higher PKM1/PKM2 ratio is observed, which might be associated with a more oxidative and less proliferative metabolic state.
Scientific Papers found: Click to Expand⟱
2409- PTS,    Pterostilbene Induces Pyroptosis in Breast Cancer Cells through Pyruvate Kinase 2/Caspase-8/Gasdermin C Signaling Pathway
- in-vitro, BC, EMT6 - in-vitro, BC, 4T1 - in-vitro, Nor, HC11
Pyro↑, Glycolysis↓, *toxicity∅, selectivity↑, GSDMC↑, PKM2↓, PKM1↑, GlucoseCon↓, lactateProd↓, ATP↓, TumCG↓,

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:


Mitochondria & Bioenergetics ⓘ

ATP↓, 1,  

Core Metabolism/Glycolysis ⓘ

GlucoseCon↓, 1,   Glycolysis↓, 1,   lactateProd↓, 1,   PKM1↑, 1,   PKM2↓, 1,  

Cell Death ⓘ

GSDMC↑, 1,   Pyro↑, 1,  

Proliferation, Differentiation & Cell State ⓘ

TumCG↓, 1,  

Drug Metabolism & Resistance ⓘ

selectivity↑, 1,  
Total Targets: 10

Pathway results for Effect on Normal Cells:


Functional Outcomes ⓘ

toxicity∅, 1,  
Total Targets: 1

Scientific Paper Hit Count for: PKM1, pyruvate kinase muscle isoform 1
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#:1306  State#:%  Dir#:2
  wNotes=0  sortOrder:rid,rpid

 

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