Kaempferol / ERβ/ESR2 Cancer Research Results

KaempF, Kaempferol: Click to Expand ⟱
Features:

Kaempferol = dietary flavonol polyphenol (aglycone; often present as glycosides such as kaempferol-3-O-glucoside). Sources: tea, kale, spinach, capers, broccoli, onions. Primary mechanisms (ranked):
1) PI3K/Akt/mTOR pathway inhibition → ↓ proliferation, ↓ survival signaling (core anti-tumor axis).
2) MAPK modulation (ERK/JNK/p38) → apoptosis or growth arrest (context-dependent).
3) NF-κB suppression → ↓ inflammatory and pro-survival transcription programs.
4) Pro-oxidant ROS induction at higher concentrations → mitochondrial apoptosis signaling.
Bioavailability/PK relevance: Oral absorption modest; extensive phase II metabolism (glucuronidation/sulfation); plasma typically low µM or sub-µM after dietary intake; many in-vitro studies use 10–100 µM (often exceeding achievable systemic exposure without specialized delivery).
Clinical evidence status: largely preclinical (cell + animal); limited human cancer trial data; strongest support in epidemiologic associations rather than interventional oncology RCTs.

Kaempferol—an abundant flavonoid found in various fruits, vegetables, and medicinal herbs—affects cancer cell behavior

Pathways:
-Inhibit the PI3K/Akt signaling
-Modulation of the MAPK pathway (including ERK1/2)
-Inhibit NF-κB Signaling Pathway
-can upregulate or activate p53-dependent pathways
-Inhibitory action on STAT
-Activation of AMPK
-Reduce VEGF
-Can induce oxidative stress in cancer cells (ROS)

Kaempferol — Cancer vs Normal Pathway Effects

Rank Pathway / Axis Cancer Cells (↑ / ↓ / ↔) Normal Cells (↑ / ↓ / ↔) TSF Primary Effect Notes / Interpretation
1 PI3K/Akt/mTOR ↓ proliferation; ↓ survival signaling ↔ / mild ↓ (cytoprotective context) R→G Growth suppression Core mechanistic axis across multiple tumor models (breast, lung, colon, prostate).
2 MAPK (ERK, JNK, p38) ↑ JNK/p38 (pro-apoptotic); ↓ ERK (proliferative) ↔ (dose-dependent) R Apoptosis induction Often stress-activated signaling; balance of ERK vs JNK determines outcome.
3 NF-κB ↓ transcription of inflammatory & anti-apoptotic genes ↓ inflammatory tone R→G Anti-inflammatory / anti-survival Reduces cytokine signaling and tumor microenvironment support pathways.
4 ROS ↑ (high concentration; pro-oxidant apoptosis) ↔ / ↓ (antioxidant at low conc.) P→R Mitochondrial stress Biphasic: antioxidant at dietary levels; pro-oxidant at higher in-vitro doses.
5 NRF2 ↔ / ↓ (context-dependent) ↑ cytoprotective response G Redox adaptation May activate antioxidant genes in normal cells; persistent activation in tumors could support resistance.
6 Intrinsic apoptosis (Bax/Bcl-2, caspases) ↑ Bax; ↓ Bcl-2; ↑ caspase-3/9 ↔ R→G Mitochondrial apoptosis Common downstream convergence of ROS + PI3K suppression.
7 Ca2+ signaling ↑ mitochondrial Ca2+ (subset models) ↔ R Apoptotic amplification Not universal; observed in certain carcinoma lines.
8 HIF-1α / Angiogenesis ↓ HIF-1α; ↓ VEGF (model-dependent) ↔ G Anti-angiogenic potential Observed in hypoxia models; translational impact uncertain.
9 Ferroptosis ↔ (indirect; limited data) ↔ R Redox-linked sensitivity (theoretical) No consistent ferroptosis signature established.
10 Clinical Translation Constraint Low oral bioavailability; rapid conjugation; in-vitro concentrations commonly exceed systemic exposure; limited human interventional oncology data. — PK / Evidence Dietary intake likely below cytotoxic range; delivery systems (nano-formulations) under investigation.

TSF legend: P: 0–30 min | R: 30 min–3 hr | G: >3 hr
ERβ/ESR2, Estrogen receptor beta also known as NR3A2: Click to Expand ⟱
Source:
Type:
ERβ (or NR3A2) one of two main types of estrogen receptor—a nuclear receptor which is activated by the sex hormone estrogen. In humans ERβ is encoded by the ESR2 gene.
ERβ is a potent tumor suppressor and plays a crucial role in many cancer types such as prostate cancer and ovarian cancer.
Expression levels of the full length ERβ1 isoform are often lower in aggressive cancers as compared to normal tissue. High ERβ1 expression is associated with improved overall survival in women with breast cancer. The promise of ERβ activation, as a potential targeted therapy, is based on concurrent activation of multiple tumor suppressor pathways with few side effects compared to chemotherapy.
Scientific Papers found: Click to Expand⟱
7827- KaempF,  MBS,    Neuroprotective Potential of Mung Bean (Vigna radiata L.) Polyphenols in Alzheimer's Disease: A Review
- Review, AD, NA
*neuroP↑, *Learn↑, *memory↑, *antiOx↑, *Inflam↓, *Aβ↓, *cognitive↑, *BDNF↑, *TrkB↑, *CREB↑, *ERβ/ESR2↑, *ERK↑, *ROS↓, *AChE↓, *Dose↑,

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:


Total Targets: 0

Pathway results for Effect on Normal Cells:


NA, unassigned(tgid=0) ⓘ

Learn↑, 1,  

Redox & Oxidative Stress(tgid=1) ⓘ

antiOx↑, 1,   ROS↓, 1,  

Core Metabolism/Glycolysis(tgid=4) ⓘ

CREB↑, 1,  

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

ERK↑, 1,  

Immune & Inflammatory Signaling(tgid=16) ⓘ

Inflam↓, 1,  

Synaptic & Neurotransmission(tgid=18) ⓘ

AChE↓, 1,   BDNF↑, 1,   TrkB↑, 1,  

Protein Aggregation(tgid=19) ⓘ

Aβ↓, 1,  

Hormonal & Nuclear Receptors(tgid=20) ⓘ

ERβ/ESR2↑, 1,  

Drug Metabolism & Resistance(tgid=21) ⓘ

Dose↑, 1,  

Functional Outcomes(tgid=23) ⓘ

cognitive↑, 1,   memory↑, 1,   neuroP↑, 1,  
Total Targets: 15

Scientific Paper Hit Count for: ERβ/ESR2, Estrogen receptor beta also known as NR3A2
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#:316  Target#:515  State#:%  Dir#:2
  wNotes=0  sortOrder:rid,rpid

 

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