Quercetin / AMPK 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


AMPK, adenosine monophosphate-activated protein kinase: Click to Expand ⟱
Source:
Type:
AMPK: guardian of metabolism and mitochondrial homeostasis; Upon changes in the ATP-to-AMP ratio, AMPK is activated. (AMPK) is a key metabolic sensor that is pivotal for the maintenance of cellular energy homeostasis. It is well documented that AMPK possesses a suppressor role in the context of tumor development and progression by modulating the inflammatory and metabolic pathways.

-Activating AMPK can inhibit anabolic processes and the PI3K/Akt/mTOR pathway reducing glycolysis shifting toward Oxidative Phosphorlylation.


AMPK activators:
-metformin or AICAR
-Resveratrol: activate AMPK indirectly
-Berberine
-Quercetin: may stimulate AMPK
-EGCG: thought to activate AMPK
-Curcumin: may activate AMPK

-Ginsenosides: Some ginsenosides have been associated with AMPK activation -Beta-Lapachone: A natural naphthoquinone compound found in the bark of Tabebuia avellanedae (also known as lapacho or taheebo). It has been observed to activate AMPK in certain models.
-Alpha-Lipoic Acid (ALA): associated with AMPK activation
Scientific Papers found: Click to Expand⟱
3336- QC,    Neuroprotective Effects of Quercetin in Alzheimer’s Disease
- Review, AD, NA
*neuroP↑, Neuroprotection by quercetin has been reported in several in vitro studies
*lipid-P↓, It has been shown to protect neurons from oxidative damage while reducing lipid peroxidation.
*antiOx↑, In addition to its antioxidant properties, it inhibits the fibril formation of amyloid-β proteins, counteracting cell lyses and inflammatory cascade pathways.
*Aβ↓,
*Inflam↓,
*BBB↝, It also has low BBB penetrability, thus limiting its efficacy in combating neurodegenerative disorders.
*NF-kB↓, downregulating pro-inflammatory cytokines, such as NF-kB and iNOS, while stimulating neuronal regeneration
*iNOS↓,
*memory↑, Quercetin has shown therapeutic efficacy, improving learning, memory, and cognitive functions in AD
*cognitive↑,
*AChE↓, Quercetin administration resulted in the inhibition of AChE
*MMP↑, quercetin ameliorates mitochondrial dysfunction by restoring mitochondrial membrane potential, decreases ROS production, and restores ATP synthesis
*ROS↓,
*ATP↑,
*AMPK↑, It also increased the expression of AMP-activated protein kinase (AMPK), which is a key cell regulator of energy metabolism.
*NADPH↓, Activated AMPK can decrease ROS generation by inhibiting NADPH oxidase activity
*p‑tau↓, Inhibition of AβAggregation and Tau Phosphorylation

4297- QC,    Quercetin attenuates tau hyperphosphorylation and improves cognitive disorder via suppression of ER stress in a manner dependent on AMPK pathway
- in-vitro, AD, SH-SY5Y
*AMPK↑, administration of quercetin enhanced AMPK activity, inhibited IRE1α and PERK phosphorylation, NLRP3 expression and tau phosphorylation
*IRE1↓,
*p‑PERK↓,
*p‑tau↓,
*cognitive↑, and improved cognitive disorder in mice exposed to high fat diets
*antiOx↑, exert anti-oxidative, anti-ER stress, anti-inflammatory activities and regulating glucose homeostasis, which can prevent neurodegenerative disorders, diabetes, and obesity
*ER Stress↓,
*Inflam↓,
*neuroP↑,
*TXNIP↓, Quercetin and quercetin-3-O-glucuronide suppressed ER stress with decreased phosphorylation of IRE1α and PERK, thereby inhibited TXNIP and NLRP3 inflammasome activation,
*NLRP3↓, effectively protected neuronal cells from inflammatory insult by blocking ER stress/NLRP3 inflammasome activation.

3381- QC,    Quercetin induces cell death in cervical cancer by reducing O-GlcNAcylation of adenosine monophosphate-activated protein kinase
- in-vitro, Cerv, HeLa
SREBP1/SREBF1↓, quercetin treatment decreased the immunoreactivities of OGT and SREBP-1 in HeLa cells. Our
TumCP↓, Quercetin decreased cell proliferation and induced cell death, but its effect on HaCaT cells was lower than that on HeLa cells.
TumCD↑,
AMPK↑, Quercetin decreased the expression of global O-GlcNAcylation and increased AMPK activation by reducing the O-GlcNAcylation of AMPK
SREBP1/SREBF1↓, Once activated, AMPK regulates various proteins involved in metabolism, which suppress energy consumption and cellular growth, such as sterol regulatory element binding protein 1 (SREBP-1
FASN↓, FAS and ACC were significantly decreased in cells treated with quercetin
ACC↓,

3365- QC,    Quercetin attenuates sepsis-induced acute lung injury via suppressing oxidative stress-mediated ER stress through activation of SIRT1/AMPK pathways
- in-vivo, Sepsis, NA
*ER Stress↓, quercetin could inhibit the level of ER stress as evidenced by decreased mRNA expression of PDI, CHOP, GRP78, ATF6, PERK, IRE1α
*PDI↓,
*CHOP/DDIT3↓,
*GRP78/BiP↓,
*ATF6↓,
*PERK↓,
*IRE1↓,
*MMP↑, and improve mitochondrial function, as presented by increased MMP, SOD level and reduced production of ROS, MDA.
*SOD↑,
*ROS↓,
*MDA↓,
*SIRT1↑, quercetin upregulated SIRT1/AMPK mRNA expression.
*AMPK↑,
*Sepsis↓, quercetin could protect against sepsis-induced ALI by suppressing oxidative stress-mediated ER stress and mitochondrial dysfunction via induction of the SIRT1/AMPK pathways.


Showing Research Papers: 1 to 4 of 4

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 4

Pathway results for Effect on Cancer / Diseased Cells:


Core Metabolism/Glycolysis(tgid=4) ⓘ

ACC↓, 1,   AMPK↑, 1,   FASN↓, 1,   SREBP1/SREBF1↓, 2,  

Cell Death(tgid=5) ⓘ

TumCD↑, 1,  

Migration(tgid=13) ⓘ

TumCP↓, 1,  
Total Targets: 6

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress(tgid=1) ⓘ

antiOx↑, 2,   lipid-P↓, 1,   MDA↓, 1,   ROS↓, 2,   SOD↑, 1,  

Mitochondria & Bioenergetics(tgid=3) ⓘ

ATP↑, 1,   MMP↑, 2,  

Core Metabolism/Glycolysis(tgid=4) ⓘ

AMPK↑, 3,   NADPH↓, 1,   SIRT1↑, 1,  

Cell Death(tgid=5) ⓘ

iNOS↓, 1,  

Protein Folding & ER Stress(tgid=8) ⓘ

ATF6↓, 1,   CHOP/DDIT3↓, 1,   ER Stress↓, 2,   GRP78/BiP↓, 1,   IRE1↓, 2,   PERK↓, 1,   p‑PERK↓, 1,  

Migration(tgid=13) ⓘ

TXNIP↓, 1,  

Angiogenesis & Vasculature(tgid=14) ⓘ

PDI↓, 1,  

Barriers & Transport(tgid=15) ⓘ

BBB↝, 1,  

Immune & Inflammatory Signaling(tgid=16) ⓘ

Inflam↓, 2,   NF-kB↓, 1,  

Synaptic & Neurotransmission(tgid=18) ⓘ

AChE↓, 1,   p‑tau↓, 2,  

Protein Aggregation(tgid=19) ⓘ

Aβ↓, 1,   NLRP3↓, 1,  

Functional Outcomes(tgid=23) ⓘ

cognitive↑, 2,   memory↑, 1,   neuroP↑, 2,  

Infection & Microbiome(tgid=24) ⓘ

Sepsis↓, 1,  
Total Targets: 31

Scientific Paper Hit Count for: AMPK, adenosine monophosphate-activated protein kinase
4 Quercetin
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#:9  State#:%  Dir#:%
  wNotes=on  sortOrder:rid,rpid

 

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