condition found tbRes List
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.

-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


EZH2, enhancer of zeste homolog 2 (Drosophila): Click to Expand ⟱
Source: CGL-Driver Genes
Type: Oncogene
EZH2 (Enhancer of Zeste Homolog 2) is a gene that encodes a protein which is a key component of the Polycomb Repressive Complex 2 (PRC2). This complex is involved in the regulation of gene expression through histone methylation, specifically the trimethylation of histone H3 at lysine 27 (H3K27me3), which leads to transcriptional repression of target genes.
EZH2 is often overexpressed in various types of cancers, including breast, prostate, and lymphoma. This overexpression can lead to the silencing of tumor suppressor genes, contributing to uncontrolled cell proliferation and survival.
Scientific Papers found: Click to Expand⟱
3359- QC,    Quercetin modifies 5′CpG promoter methylation and reactivates various tumor suppressor genes by modulating epigenetic marks in human cervical cancer cells
- in-vitro, Cerv, HeLa
DNMTs↓, When nuclear extracts were incubated with increasing doses of quercetin (25 and 50uM) they were found to inhibit the function of the DNMTs by 32% and 49% respectively, in comparison to untreated control
HDAC↓, quercetin (25 and 50 uM), they were found to inhibit the function of the HDACs by 47% and 62% in comparison to untreated control.
HMTs↓, quercetin (25 and 50 uM), were found to inhibit the function of the HMT H3K9 by 63% and 71%
DNMT3A↓, preferred binding of quercetin on DNMT3A and DNMT3B is within the substrate binding cavity and could competitively inhibit the protein
EZH2↓, Quercetin interacts with EZH2 and functions as an inhibitor
HDAC1↓, Quercetin was able to reduce the activity of class II HDACs significantly, with concomitant downregulation of HDAC1, HDAC2, HDAC6, HDAC7, and HDAC11 expression
HDAC2↓,
HDAC6↓,
HDAC11↓,
G9a↓, quercetin and this correlates well with the observed downregulation of G9A expression
TIMP3↑, Fig8: quercetin resulted in reduced promoter methylation of several TSGs (APC, CDH1, CDH13, DAPK1, FHIT, GSTP1, MGMT, MLH1, PTEN, RARB, RASSF1, SOC51, TIMP3, and VHL
PTEN↑,
SOCS1↑,

54- QC,    Quercetin‑3‑methyl ether suppresses human breast cancer stem cell formation by inhibiting the Notch1 and PI3K/Akt signaling pathways
- in-vitro, BC, MCF-7
EMT↓,
E-cadherin↑,
Vim↓,
MMP2↓,
NOTCH1↓,
PI3K/Akt↓,
PI3k/Akt/mTOR↓,
p‑Akt↓,
EZH2↓, Querectin-3-methyl ether downregulates Notch1, PI3K-AKT and EZH2 signals in breast cancer cells


* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 2

Results for Effect on Cancer/Diseased Cells:
p‑Akt↓,1,   DNMT3A↓,1,   DNMTs↓,1,   E-cadherin↑,1,   EMT↓,1,   EZH2↓,2,   G9a↓,1,   HDAC↓,1,   HDAC1↓,1,   HDAC11↓,1,   HDAC2↓,1,   HDAC6↓,1,   HMTs↓,1,   MMP2↓,1,   NOTCH1↓,1,   PI3K/Akt↓,1,   PI3k/Akt/mTOR↓,1,   PTEN↑,1,   SOCS1↑,1,   TIMP3↑,1,   Vim↓,1,  
Total Targets: 21

Results for Effect on Normal Cells:

Total Targets: 0

Scientific Paper Hit Count for: EZH2, enhancer of zeste homolog 2 (Drosophila)
Filter Conditions: Pro/AntiFlg:%  IllCat:%  CanType:%  Cells:%  prod#:140  Target#:108  State#:%  Dir#:%
  wNotes=on  sortOrder:rid,rpid

 

Home Page