Quercetin / AMPKα Cancer Research Results

QC, Quercetin: Click to Expand ⟱
Features:
Plant pigment (flavonoid) found in red wine, onions, green tea, apples and berries.
Quercetin is thought to contribute to anticancer effects through several mechanisms:
-Antioxidant Activity:
-Induction of Apoptosis:modify Bax:Bcl-2 ratio
-Anti-inflammatory Effects:
-Cell Cycle Arrest:
-Inhibition of Angiogenesis and Metastasis: (VEGF)

Cellular Pathways:
-PI3K/Akt/mTOR Pathway: central to cell proliferation, survival, and metabolism.
-MAPK/ERK Pathway: influencing cell proliferation, differentiation, and apoptosis.
-NF-κB Pathway: downregulate NF-κB
-JAK/STAT Pathway: interfere with the activation of STAT3
-Apoptotic Pathways: intrinsic (mitochondrial) and extrinsic (death receptor-mediated) pathways

Quercetin has been used at doses around 500–1000 mg per day
Quercetin’s bioavailability from foods or standard supplements can be low.
EMIQ bioavialability is about 3X that of Quercetin (Example Natural Factors brand)
Isoquercitrin is high bioaviability and efficiacy but at this time does not seem available as supplement.

-Note half-life 11 to 28 hours.
BioAv low 1-10%, poor water-solubility, consuming with fat may improve bioavialability. also piperine or VitC.
Pathways:
- induce ROS production in cancer cells (higher dose). Typicallys Lowers ROS in normal cells(unless it is high dose?)or depends on Redox status?. "quercetin paradox"
- ROS↑ related: MMP↓(ΔΨm), ER Stress↑, UPR↑, GRP78↑, Ca+2↑, Cyt‑c↑, Caspases↑, DNA damage↑, cl-PARP↑, HSP↓, Prx,
- Confusing info about Lowering AntiOxidant defense in Cancer Cells: NRF2↓(some contrary), TrxR↓**, SOD↓(contrary), GSH↓ Catalase↓(contrary), HO1↓(some contrary), GPx↓(some contrary)
- Raises AntiOxidant defense in Normal Cells: ROS↓, NRF2↑, SOD↑, GSH↑, Catalase↑,
- lowers Inflammation : NF-kB↓, COX2↓, p38↓, Pro-Inflammatory Cytokines : NLRP3↓, IL-1β↓, TNF-α↓, IL-6↓, IL-8↓
- inhibit Growth/Metastases : TumMeta↓, TumCG↓, EMT↓, MMPs↓, MMP2↓, MMP9↓, TIMP2, IGF-1↓, uPA↓, VEGF↓, ROCK1↓, FAK↓, NF-κB↓, CXCR4↓, SDF1↓, TGF-β↓, α-SMA↓, ERK↓
- reactivate genes thereby inhibiting cancer cell growth : HDAC↓, DNMTs↓, EZH2↓, P53↑, HSP↓, Sp proteins↓, TET↑
- cause Cell cycle arrest : TumCCA↑, cyclin D1↓, cyclin E↓, CDK2↓, CDK4↓, CDK6↓,
- inhibits Migration/Invasion : TumCMig↓, TumCI↓, TNF-α↓, FAK↓, ERK↓, EMT↓, TOP1↓, TET1,
- inhibits glycolysis and ATP depletion : HIF-1α↓, PKM2↓, cMyc↓, GLUT1↓, LDH↓, LDHA↓, HK2↓, PFKs↓, PDKs↓, ECAR↓, OXPHOS↓, GRP78↑, GlucoseCon↓
- inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, Notch↓, FGF↓, PDGF↓, EGFR↓,
- some indication of inhibiting Cancer Stem Cells : CSC↓, CK2↓, Hh↓, CD24↓, β-catenin↓, Notch2↓,
- Others: PI3K↓, AKT↓, JAK↓, STAT↓, Wnt↓, β-catenin↓, AMPK, α↓, ERK↓, JNK, - SREBP (related to cholesterol).
- Synergies: chemo-sensitization, chemoProtective, RadioSensitizer, RadioProtective, Others(review target notes), Neuroprotective, Cognitive, Renoprotection, Hepatoprotective, CardioProtective,

- Selectivity: Cancer Cells vs Normal Cells

Rank Pathway / Axis Cancer Cells Normal Cells Label Primary Interpretation Notes
1 Reactive oxygen species (ROS) ↑ ROS (dose-, metal-, context-dependent) ↓ ROS Conditional Driver Biphasic redox modulation Quercetin exhibits pro-oxidant behavior in cancer cells while protecting normal cells
2 Mitochondrial integrity / intrinsic apoptosis ↓ ΔΨm; ↑ caspase activation ↔ preserved Driver Execution of intrinsic apoptosis Mitochondrial dysfunction is a central apoptosis route in cancer cells
3 PI3K → AKT → mTOR axis ↓ AKT / ↓ mTOR ↔ adaptive suppression Driver Growth and survival inhibition AKT/mTOR suppression is a consistently reported upstream effect in cancer models
4 NF-κB signaling ↓ NF-κB activation ↓ inflammatory NF-κB tone Secondary Reduced survival and inflammatory transcription NF-κB inhibition contributes to chemosensitization and apoptosis susceptibility
5 MAPK signaling (JNK / p38) ↑ JNK / ↑ p38 ↔ minimal Secondary Stress-mediated apoptosis signaling MAPK activation supports apoptosis downstream of redox stress
6 Cell cycle regulation ↑ G1/S or G2/M arrest ↔ largely spared Phenotypic Cytostatic growth control Cell-cycle arrest reflects disruption of growth signaling
7 HIF-1α hypoxia signaling ↓ HIF-1α ↔ minimal Secondary Reduced hypoxia tolerance Quercetin interferes with hypoxia-driven transcriptional programs
8 NRF2 antioxidant response ↑ NRF2 (adaptive, context-dependent) ↑ NRF2 (protective) Adaptive Stress compensation NRF2 induction reflects redox buffering rather than primary cytotoxicity


AMPKα, AMP-activated protein kinase: Click to Expand ⟱
Source:
Type:
AMPK is a heterotrimeric protein complex consisting of three subunits: AMPKα, AMPKβ, and AMPKγ. AMPKα is expressed in two isoforms, AMPKα1 and AMPKα2, and these isoforms are encoded by the genes PRKAA1 and PRKAA2, respectively.
In many cancers, AMPKα acts as a tumor suppressor, and its downregulation is often associated with worse clinical outcomes.
Scientific Papers found: Click to Expand⟱
919- QC,    Quercetin Regulates Sestrin 2-AMPK-mTOR Signaling Pathway and Induces Apoptosis via Increased Intracellular ROS in HCT116 Colon Cancer Cells
- in-vitro, CRC, HCT116
Apoptosis↑,
ROS↑,
SESN2↑,
P53↑,
AMPKα↑,
mTOR↓,

914- QC,    Quercetin and Cancer Chemoprevention
- Review, NA, NA
GSH↓, high Qu concentration, causes a reduction in GSH content
ROS↑, in tumor cells
TumCCA↑, Depending on the cell type and tumor origin, Qu is able to block the cell cycle at G2/M or at the G1/S transition
Ca+2↑, Qu treatment increases cytosolic Ca2+ levels
MMP↓,
Casp3↑,
Casp8↑,
Casp9↑,
β-catenin/ZEB1↓,
AMPKα↑,
ASK1↑,
p38↑,
TRAIL↑, Qu is a potent enhancer of TNF-related apoptosis-inducing ligand (TRAIL)-induced apoptosis, through the induction of the expression of death receptor (DR)-5, a phenomenon that specifically occurs in prostate cancer cells
DR5↑,
cFLIP↓,
Apoptosis↑, tumor cell lines are prone to cell-cycle arrest and apoptosis at Qu concentrations that have no or little effect on non-transformed cells ****

82- QC,  ATG,    Arctigenin in combination with quercetin synergistically enhances the anti-proliferative effect in prostate cancer cells
- in-vitro, Pca, LNCaP
AR↓,
PI3K/Akt↓, The combination treatment significantly inhibited both AR and PI3K/Akt pathways compared to control.
miR-21↓,
STAT3↓,
BAD↓,
PRAS40↓,
GSK‐3β↓,
PSA↓,
NKX3.1↑,
Bax:Bcl2↑, a significantly increased ratio of Bax to Bcl-2 protein expression was observed in LAPC-4 cells by the combination treatment compared to Q alone, and a trend to increase in LNCaP cells
miR-19b↓,
miR-148a↓,
AMPKα↓,
TumCP↓, The anti-proliferative activity of arctigenin was 10-20 fold stronger than quercetin in both cell lines.
chemoPv↑, combination of arctigenin and quercetin, that target similar pathways, at low physiological doses, provides a novel regimen with enhanced chemoprevention in prostate cancer.
TumCMig↓, Enhanced inhibition of cell migration


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(tgid=1) ⓘ

GSH↓, 1,   ROS↑, 2,  

Mitochondria & Bioenergetics(tgid=3) ⓘ

MMP↓, 1,  

Core Metabolism/Glycolysis(tgid=4) ⓘ

PI3K/Akt↓, 1,  

Cell Death(tgid=5) ⓘ

Apoptosis↑, 2,   ASK1↑, 1,   BAD↓, 1,   Bax:Bcl2↑, 1,   Casp3↑, 1,   Casp8↑, 1,   Casp9↑, 1,   cFLIP↓, 1,   DR5↑, 1,   p38↑, 1,   TRAIL↑, 1,  

Kinase & Signal Transduction(tgid=6) ⓘ

AMPKα↓, 1,   AMPKα↑, 2,  

Transcription & Epigenetics(tgid=7) ⓘ

miR-21↓, 1,  

Autophagy & Lysosomes(tgid=9) ⓘ

SESN2↑, 1,  

DNA Damage & Repair(tgid=10) ⓘ

NKX3.1↑, 1,   P53↑, 1,  

Cell Cycle & Senescence(tgid=11) ⓘ

TumCCA↑, 1,  

Proliferation, Differentiation & Cell State(tgid=12) ⓘ

GSK‐3β↓, 1,   mTOR↓, 1,   STAT3↓, 1,  

Migration(tgid=13) ⓘ

Ca+2↑, 1,   miR-148a↓, 1,   miR-19b↓, 1,   TumCMig↓, 1,   TumCP↓, 1,   β-catenin/ZEB1↓, 1,  

Immune & Inflammatory Signaling(tgid=16) ⓘ

PSA↓, 1,  

Hormonal & Nuclear Receptors(tgid=20) ⓘ

AR↓, 1,  

Clinical Biomarkers(tgid=22) ⓘ

AR↓, 1,   PSA↓, 1,  

Functional Outcomes(tgid=23) ⓘ

chemoPv↑, 1,   PRAS40↓, 1,  
Total Targets: 37

Pathway results for Effect on Normal Cells:


Total Targets: 0

Scientific Paper Hit Count for: AMPKα, AMP-activated protein kinase
3 Quercetin
1 Arctigenin
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#:140  Target#:475  State#:%  Dir#:%
  wNotes=on  sortOrder:rid,rpid

 

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