Database Query Results : EGCG (Epigallocatechin Gallate), , EMT

EGCG, EGCG (Epigallocatechin Gallate): Click to Expand ⟱
Features:
EGCG (Epigallocatechin Gallate) is found in green tea. 100 times more effective than Vitamin C and 25 times more effective than Vitamin E at protecting cells from damage associated with oxidative stress.
EGCG Epigallocatechin Gallate (Green Tea) -Catechin
Summary:
1. Concentration is a factor that could determine whether green tea polyphenols act as antioxidants or pro-oxidants.
2. Poor bioavailability: taking EGCG capsules without food was better.
3. Cancer dosage 4g/day (2g twice per day)? with curcumin may help (another ref says 700–2100 mg/d)
4. EGCG is susceptible to oxidative degradation.
5. “As for the pH level, the acidic environments enhance the stability of EGCG”.
6. “EGCG may enhance nanoparticle uptake by tumor cells”
7. Might be iron chelator (removing iron from cancer cells)
8. Claimed as synergistic effect with chemotherapy ( cisplatin, bleomycin, gemcitabine.
9. May suppress glucose metabolism, interfere with VEGF, downregulate NF-κB and MMP-9, down-regulation of androgen-regulated miRNA-21.
10. Take with red pepper powder, Capsicum ratio 25:1 (based on half life, they did every 4 hr) (chili pepper vanilloid capsaicin).
11. EGCG mediated ROS formation can upregulate CTR1 expression via the ERK1/2/NEAT1 pathway, which can increase the intake of chemotherapeutic drugs such as cisplatin in NSCLC cells and act as a chemosensitizer [58]
12. Matcha green tea has highest EGCG (2-3X) because consuming leaf.
13. EGCG is an ENOX2 inhibitor.
14. Nrf2 activator in both cancer and normal cells. This example of lung cancer show both directions in different cell lines, but both toward optimim level.
Biological activity, EGCG has been reported to exhibit a range of effects, including:
    Antioxidant activity: 10-50 μM
     Anti-inflammatory activity: 20-50 μM
     Anticancer activity: 50-100 μM
     Cardiovascular health: 20-50 μM
     Neuroprotective activity: 10-50 μM

Drinking a cup (or two cups) of green tea (in which one might ingest roughly 50–100 mg of EGCG from brewed tea) generally results in peak plasma EGCG concentrations in the range of approximately 0.1 to 0.6 μM.

With higher, supplement-type doses (e.g., oral doses in the 500 mg–800 mg range that are sometimes studied for clinical benefits), peak plasma concentrations in humans can reach the low micromolar range, often reported around ~1–2 μM and in some cases up to 5 μM.

Reported values can range from about 25–50 mg of EGCG per gram of matcha powder.
In cases where the matcha is exceptionally catechin-rich, the content could reach 200–250 mg or more in 5 g.

-Peak plasma concentration roughly 1 to 2 hours after oral ingestion.
-Elimination half-life of EGCG in plasma is commonly reported to be in the range of about 3 to 5 hours.

Supplemental EGCG
Dose (mg)   ≈ Peak Plasma EGCG (µM)
~50 mg          ≈ 0.1–0.3 µM
~100 mg         ≈ 0.2–0.6 µM
~250 mg         ≈ 0.5–1.0 µM
~500 mg         ≈ 1–2 µM
~800 mg or higher  ≈ 1–5 µM

50mg of EGCG in 1g of matcha tea(1/2 teaspoon)

Studies on green tea extracts have employed doses roughly equivalent to 300–800 mg/day of EGCG. Excessive doses can cause liver toxicity in some cases.

Methods to improve bioavailability
-Lipid-based carriers or nanoemulsions
-Polymer-based nanoparticles or encapsulation
-Co-administration with ascorbic acid (vitamin C)
-Co-administration of adjuvants like piperine (perhaps sunflower lecithin and chitosan) -Using multiple smaller doses rather than one large single dose.
-Taking EGCG on an empty stomach or under fasting conditions, or aligning dosing with optimal pH conditions in the GI tract, may improve its absorption.(acidic environment is generally more favorable for its stability and absorption).
– EGCG is more stable under acidic conditions. In the stomach, where the pH is typically around 1.5 to 3.5, EGCG is less prone to degradation compared to the more neutral or basic environments of the small intestine.
- At neutral (around pH 7) or alkaline pH, EGCG undergoes auto-oxidation, reducing the effective concentration available for absorption.
– Although the stomach’s acidic pH helps maintain EGCG’s stability, most absorption occurs in the small intestine, where the pH is closer to neutral.
– To counterbalance the inherent instability in the intestine, strategies such as co-administration of pH-modifying agents (like vitamin C) are sometimes used. These agents help to maintain a slightly acidic environment in the gut microenvironment, potentially improving EGCG stability during its transit and absorption.
– The use of acidifiers or buffering agents in supplements may help preserve EGCG until it reaches the absorption sites.

-Note half-life 3–5 hours.
- low BioAv 1%? despite its limited absorption, it is rapidly disseminated throughout the body
Pathways:
- induce ROS production
- ROS↑ related: MMP↓(ΔΨm), ER Stress↑, UPR↑, GRP78↑, Ca+2↑, Cyt‑c↑, Caspases↑, DNA damage↑, cl-PARP↑, HSP↓, Prx,
- Does NOT Lower AntiOxidant defense in Cancer Cells: NRF2↑, TrxR↓**, SOD, GSH Catalase HO1 GPx
- 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↓, IGF-1↓, uPA↓, VEGF↓, FAK↓, RhoA↓, NF-κB↓, TGF-β↓, α-SMA↓, ERK↓
- reactivate genes thereby inhibiting cancer cell growth : HDAC↓, DNMTs↓, EZH2↓, P53↑, HSP↓, Sp proteins↓,
- cause Cell cycle arrest : TumCCA↑, cyclin D1↓, cyclin E↓, CDK2↓, CDK4↓, CDK6↓,
- inhibits Migration/Invasion : TumCMig↓, TumCI↓, TNF-α↓, FAK↓, ERK↓, EMT↓, TOP1↓,
- inhibits glycolysis /Warburg Effect and ATP depletion : HIF-1α↓, PKM2↓, cMyc↓, GLUT1↓, LDH↓, LDHA↓, HK2↓, PFKs↓, ECAR↓, OXPHOS↓, GRP78↑, Glucose↓, GlucoseCon↓
- inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, Notch↓, FGF↓, PDGF↓, EGFR↓, Integrins↓,
- inhibits Cancer Stem Cells : CSC↓, Hh↓, GLi↓, GLi1↓, CD133↓, CD24↓, β-catenin↓, n-myc↓, Notch↓, OCT4↓,
- Others: PI3K↓, AKT↓, JAK↓, STAT↓, Wnt↓, β-catenin↓, AMPK, ERK↓, JNK, - SREBP (related to cholesterol).
- Synergies: chemo-sensitization, chemoProtective, RadioSensitizer, RadioProtective, Others(review target notes), Neuroprotective, Cognitive, Renoprotection, Hepatoprotective(possible damage at high dose), CardioProtective,

- Selectivity: Cancer Cells vs Normal Cells


EMT, Epithelial-Mesenchymal Transition: Click to Expand ⟱
Source:
Type:
Biological process in which epithelial cells lose their cell polarity and cell-cell adhesion properties and gain mesenchymal traits, such as increased motility and invasiveness. This process is pivotal during embryogenesis and wound healing. Hh signaling pathway is able to regulate the EMT. Snail, E-cadherin and N-cadherin, key components of EMT; EMT-related factors, E-cadherin, N-cadherin, vimentin; The hallmark of EMT is the upregulation of N-cadherin followed by the downregulation of E-cadherin.
EMT is regulated by various signaling pathways, including TGF-β, Wnt, Notch, and Hedgehog pathways. Transcription factors such as Snail, Slug, Twist, and ZEB play critical roles in repressing epithelial markers (like E-cadherin) and promoting mesenchymal markers (like N-cadherin and vimentin).
EMT is associated with increased tumor aggressiveness, enhanced migratory and invasive capabilities, and resistance to apoptosis.
Scientific Papers found: Click to Expand⟱
22- EGCG,    Inhibition of sonic hedgehog pathway and pluripotency maintaining factors regulate human pancreatic cancer stem cell characteristics
- in-vitro, PC, CD133+ - in-vitro, PC, CD44+ - in-vitro, PC, CD24+ - in-vitro, PC, ESA+
HH↓,
Smo↓,
PTCH1↓,
PTCH2↓,
Gli1↓,
GLI2↓,
Gli↓,
Bcl-2↓,
XIAP↓,
Shh↓,
EMT↓,
survivin↓,
Nanog↓,
Casp3↑,
Casp7↑,

1072- EGCG,    Epigallocatechin gallate (EGCG) suppresses epithelial-Mesenchymal transition (EMT) and invasion in anaplastic thyroid carcinoma cells through blocking of TGF-β1/Smad signaling pathways
- in-vitro, Thyroid, 8505C
EMT↓,
TumCI↓,
TumCMig↓,
TGF-β↓,
p‑SMAD2↓,
p‑SMAD3↓,
SMAD4↓,

685- EGCG,  CUR,  SFN,  RES,  GEN  The “Big Five” Phytochemicals Targeting Cancer Stem Cells: Curcumin, EGCG, Sulforaphane, Resveratrol and Genistein
- Analysis, NA, NA
Bcl-2↓,
survivin↓,
XIAP↓,
EMT↓,
Apoptosis↑,
Nanog↓,
cMyc↓,
OCT4↓,
Snail↓,
Slug↓,
Zeb1↓,
TCF↓,

4680- EGCG,    The Potential of Epigallocatechin Gallate in Targeting Cancer Stem Cells: A Comprehensive Review
- Review, Var, NA
CSCs↓, major bioactive green tea polyphenol (-)-epigallocatechin gallate (EGCG) has been fruitful in downgrading cancer stemness signaling and CSC biomarkers in cancer progression.
EMT↓, Cancer stemness is intricately related to epithelial-mesenchymal transition (EMT), metastasis and therapy resistance, and EGCG has been evidenced to regress all these CSC-related effects
TumMeta↓,
RadioS↑, By inhibiting CSC characteristics EGCG has also been evidenced to sensitize the tumor cells to radiotherapy and chemotherapy.
ChemoSen↑,
BioAv↓, concern about its bioavailability, stability and efficacy against spheroids raised from parental cells. Therefore, novel nano formulations of EGCG and adjuvant therapy of EGCG with other phytochemicals or drugs or small molecules may have a better pr

4682- EGCG,    Human cancer stem cells are a target for cancer prevention using (−)-epigallocatechin gallate
- Review, Var, NA
CSCs↓, EGCG inhibits the transcription and translation of genes encoding stemness markers, indicating that EGCG generally inhibits the self-renewal of CSCs.
EMT↓, EGCG inhibits the expression of the epithelial-mesenchymal transition phenotypes of human CSCs.
ChemoSen↑, Green tea prevents human cancer, and the combination of EGCG and anticancer drugs confers cancer treatment with tissue-agnostic efficacy.
CD133↓, CD133, CD44, ALDH1A1, Nanog, Oct4
CD44↓,
ALDH1A1↓,
Nanog↓,
OCT4↓,
TumCP↓, These results show that EGCG inhibits proliferation and induces apoptosis of lung CSCs
Apoptosis↑,
p‑GSK‐3β↓, EGCG (0–100 μM) inhibited the phosphorylation of glycogen synthase kinase 3β (GSK3β) at Ser 9, which significantly increases the expression of GSK3β, and decreases the expression of β-catenin and its downstream target gene c-Myc.
GSK‐3β↑,
β-catenin/ZEB1↓,
cMyc↓,
XIAP↓, EGCG (30–60 μM) inhibits the expression of X-linked inhibitor of apoptosis protein (XIAP), Bcl2, and survivin as well as that of the EMT markers vimentin, Slug, Snail, and nuclear β-catenin.
Bcl-2↓,
survivin↓,
Vim↓,
Slug↓,
Snail↓,

4685- EGCG,    Epigallocathechin gallate, polyphenol present in green tea, inhibits stem-like characteristics and epithelial-mesenchymal transition in nasopharyngeal cancer cell lines
- in-vitro, NPC, TW01 - in-vitro, NPC, TW06
CSCs↓, EGCG potently inhibited sphere formation and can eliminate the stem cell characteristics of NPC and inhibit the epithelial-mesenchymal transition (EMT) signatures.
EMT↓,
TumCMig↓, Inhibition on NPC sphere-derived cell colony formation, migration, and invasion by EGCG
TumCI↓,
OCT4↓, EGCG inhibited the expression of Klf-4 and Oct-4 in sphere-derived cells.
Snail↓, EGCG significantly inhibited the levels of Snail, Vimentin and increased E-Cadherin expression in a dose-dependent manner
Vim↓,
E-cadherin↓,
HSP70/HSPA5↓, EGCG suppresses the expression of HSP70 and HSP90, and exhibits anti-tumor activity in vitro and in vivo
HSP90↓,
AntiTum↓,

60- QC,  EGCG,  isoFl,  isoFl,  isoFl  The dietary bioflavonoid quercetin synergizes with epigallocathechin gallate (EGCG) to inhibit prostate cancer stem cell characteristics, invasion, migration and epithelial-mesenchymal transition
- in-vitro, Pca, pCSCs
Casp3↑,
Casp7↑,
Bcl-2↓,
survivin↓,
XIAP↓,
EMT↓,
Slug↓,
Snail↓,
β-catenin/ZEB1↓,
LEF1↓, LEF-1/TCF

77- QC,  EGCG,    The dietary bioflavonoid quercetin synergizes with epigallocathechin gallate (EGCG) to inhibit prostate cancer stem cell characteristics, invasion, migration and epithelial-mesenchymal transition
- in-vitro, Pca, CD44+ - in-vitro, NA, CD133+ - in-vitro, NA, PC3 - in-vitro, NA, LNCaP
Casp3↑,
Casp7↑,
Bcl-2↓,
survivin↓,
XIAP↓,
EMT↓,
Vim↓,
Slug↓,
Snail↓,
β-catenin/ZEB1↓,
LEF1↓, LEF1/TCF
TCF↓, LEF1/TCF
Nanog↓,


* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 8

Results for Effect on Cancer/Diseased Cells:
ALDH1A1↓,1,   AntiTum↓,1,   Apoptosis↑,2,   Bcl-2↓,5,   BioAv↓,1,   Casp3↑,3,   Casp7↑,3,   CD133↓,1,   CD44↓,1,   ChemoSen↑,2,   cMyc↓,2,   CSCs↓,3,   E-cadherin↓,1,   EMT↓,8,   Gli↓,1,   Gli1↓,1,   GLI2↓,1,   GSK‐3β↑,1,   p‑GSK‐3β↓,1,   HH↓,1,   HSP70/HSPA5↓,1,   HSP90↓,1,   LEF1↓,2,   Nanog↓,4,   OCT4↓,3,   PTCH1↓,1,   PTCH2↓,1,   RadioS↑,1,   Shh↓,1,   Slug↓,4,   p‑SMAD2↓,1,   p‑SMAD3↓,1,   SMAD4↓,1,   Smo↓,1,   Snail↓,5,   survivin↓,5,   TCF↓,2,   TGF-β↓,1,   TumCI↓,2,   TumCMig↓,2,   TumCP↓,1,   TumMeta↓,1,   Vim↓,3,   XIAP↓,5,   Zeb1↓,1,   β-catenin/ZEB1↓,3,  
Total Targets: 46

Results for Effect on Normal Cells:

Total Targets: 0

Scientific Paper Hit Count for: EMT, Epithelial-Mesenchymal Transition
8 EGCG (Epigallocatechin Gallate)
3 isoflavones
2 Quercetin
1 Curcumin
1 Sulforaphane (mainly Broccoli)
1 Resveratrol
1 Genistein (soy isoflavone)
Filter Conditions: Pro/AntiFlg:%  IllCat:%  CanType:%  Cells:%  prod#:73  Target#:96  State#:%  Dir#:%
  wNotes=on  sortOrder:rid,rpid

 

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