ER-α36 Cancer Research Results

ER-α36, estrogen receptor alpha (ERα) protein variant: Click to Expand ⟱
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ER-α36 is a variant of the estrogen receptor alpha (ERα) protein. It is a truncated form of the full-length ERα protein.
ER-α36 is overexpressed in certain types of breast cancer, including triple-negative breast cancer (TNBC) and tamoxifen-resistant breast cancer. ER-α36 has been found to promote cell proliferation, migration, and invasion in breast cancer cells, contributing to tumor progression and metastasis. The expression of ERα is a significant factor in the prognosis of various cancers, particularly in breast and endometrial cancers, where it is a key target for therapy. The relationship between ERα expression and prognosis can vary widely among different cancer types, and ongoing research is essential to fully understand its role in cancer biology and treatment response.
Scientific Papers found: Click to Expand⟱
5396- Ash,    Withania Somnifera (Ashwagandha) and Withaferin A: Potential in Integrative Oncology
- Review, Var, NA
selectivity↑, WS was shown to impede the growth of new cancer cells, but not normal cells,
ROS↑, help induce programmed death of cells by generating reactive oxygen species (ROS), and sensistize cancer cells to apoptosis
Apoptosis↑,
ChemoSen↑, Pre-clinical studies in several cancer types have shown up to 80% inhibition using combination chemotherapy [19].
RadioS↑, It was not until 1996, that WFA’s radiosensitizer activity was reported that caused V79 cell survival reduction where 1-h pre-treatment at 2.1 µM dose before radiation significantly killed cells
NF-kB↓, inhibiting NF-κB activation
ER-α36↓, WFA, it was found the phytochemical downregulated the estrogen receptor-α (ER-α) protein in MCF-7 cells.
P53↑, WFA selectively activated p53 in tumor cells treated with the leaf extract of Ashwagandha [71] leading to growth arrest and apoptosis.
*ROS∅, opposed to the normal human mammary epithelial cells (HMEC) [72] which did not increase ROS production.
γH2AX↑, The group found an increase in γ-H2AX and number of cells expressing the phosphorylated form which is a marker for DNA damage in WFA treated MCF-7 cells.
DNAdam↑,
MMP↓, As ROS is well known to affect mithochondrial membrane potential, they found a change in mitochondrial membrane potential and altered mitochondrial morphology in WFA treated cells.
XIAP↓, XIAP (X-linked inhibitor of apoptosis protein), cIAP-2 (cellular inhibitor of apoptosis protein-2) and Survivin proteins were found to be reduced in MDA-MB-231 and MCF-7 cells when treated with WFA
IAP1↓,
survivin↓,
SOD↓, figure 2
Dose↝, doses of 3 and 4 mg/kg and the authors found 59% reduction of tumor and polyp initiation and progression in the WFA treated mice compared to the controls [80].
IL6↓, WFA downregulated expression of inflammatory markers in these tumors such as IL-6, TNF-α, COX-2 along with pro-survival markers such as pAkt, Notch1 and NF-κβ [80].
TNF-α↓,
COX2↓,
p‑Akt↓,
NOTCH1↓,
FOXO↑, figure 3 prostrate cancer
Casp↑,
MMP2↓,
CSCs↓, WFA treatment significantly reduced ALDH+ CSC population, whereas Cisplatin treatment increased CSC population.
*ROS↓, WFA was found to increase cellular survival in simulated injury and in H2O2-induced cell apoptosis along with inhibition of oxidative stress.
*SOD2↑, Thus, via upregulation of SOD2, SOD3, Prdx-1 by H2O2, WFA treatment leads to inhibition of the antioxidants and Akt-dependent improvement of cardiomyocyte caspase-3 [103].
chemoP↑, First, given the safety record of WS, it can be used as an adjunct therapy that can aid in reducing the adverse effects associated with radio and chemotherapy due to its anti-inflammatory properties.
ChemoSen↑, Second, WS can also be combined with other conventional therapies such as chemotherapies to synergize and potentiate the effects due to radiotherapy and chemotherapy due to its ability to aid in radio- and chemosensitization, respectively.
RadioS↑,

3160- Ash,    Withaferin A: A Pleiotropic Anticancer Agent from the Indian Medicinal Plant Withania somnifera (L.) Dunal
- Review, Var, NA
TumCCA↑, withaferin A suppressed cell proliferation in prostate, ovarian, breast, gastric, leukemic, and melanoma cancer cells and osteosarcomas by stimulating the inhibition of the cell cycle at several stages, including G0/G1 [86], G2, and M phase
H3↑, via the upregulation of phosphorylated Aurora B, H3, p21, and Wee-1, and the downregulation of A2, B1, and E2 cyclins, Cdc2 (Tyr15), phosphorylated Chk1, and Chk2 in DU-145 and PC-3 prostate cancer cells.
P21↑,
cycA1/CCNA1↓,
CycB/CCNB1↓,
cycE/CCNE↓,
CDC2↓,
CHK1↓,
Chk2↓,
p38↑, nitiated cell death in the leukemia cells by increasing the expression of p38 mitogen-activated protein kinases (MAPK)
MAPK↑,
E6↓, educed the expression of human papillomavirus E6/E7 oncogenes in cervical cancer cells
E7↓,
P53↑, restored the p53 pathway causing the apoptosis of cervical cancer cells.
Akt↓, oral dose of 3–5 mg/kg withaferin A attenuated the activation of Akt and stimulated Forkhead Box-O3a (FOXO3a)-mediated prostate apoptotic response-4 (Par-4) activation,
FOXO3↑,
ROS↑, the generation of reactive oxygen species, histone H2AX phosphorylation, and mitochondrial membrane depolarization, indicating that withaferin A can cause the oxidative stress-mediated killing of oral cancer cells [
γH2AX↑,
MMP↓,
mitResp↓, withaferin A inhibited the expansion of MCF-7 and MDA-MB-231 human breast cancer cells by ROS production, owing to mitochondrial respiration inhibition
eff↑, combination treatment of withaferin A and hyperthermia induced the death of HeLa cells via a decrease in the mitochondrial transmembrane potential and the downregulation of the antiapoptotic protein myeloid-cell leukemia 1 (MCL-1)
TumCD↑,
Mcl-1↓,
ER Stress↑, . Withaferin A also attenuated the development of glioblastoma multiforme (GBM), both in vitro and in vivo, by inducing endoplasmic reticulum stress via activating the transcription factor 4-ATF3-C/EBP homologous protein (ATF4-ATF3-CHOP)
ATF4↑,
ATF3↑,
CHOP↑,
NOTCH↓, modulating the Notch-1 signaling pathway and the downregulation of Akt/NF-κB/Bcl-2 . withaferin A inhibited the Notch signaling pathway
NF-kB↓,
Bcl-2↓,
STAT3↓, Withaferin A also constitutively inhibited interleukin-6-induced phosphorylation of STAT3,
CDK1↓, lowering the levels of cyclin-dependent Cdk1, Cdc25C, and Cdc25B proteins,
β-catenin/ZEB1↓, downregulation of p-Akt expression, β-catenin, N-cadherin and epithelial to the mesenchymal transition (EMT) markers
N-cadherin↓,
EMT↓,
Cyt‑c↑, depolarization and production of ROS, which led to the release of cytochrome c into the cytosol,
eff↑, combinatorial effect of withaferin A and sulforaphane was also observed in MDA-MB-231 and MCF-7 breast cancer cells, with a dramatic reduction of the expression of the antiapoptotic protein Bcl-2 and an increase in the pro-apoptotic Bax level, thus p
CDK4↓, downregulates the levels of cyclin D1, CDK4, and pRB, and upregulates the levels of E2F mRNA and tumor suppressor p21, independently of p53
p‑RB1↓,
PARP↑, upregulation of Bax and cytochrome c, downregulation of Bcl-2, and activation of PARP, caspase-3, and caspase-9 cleavage
cl‑Casp3↑,
cl‑Casp9↑,
NRF2↑, withaferin A binding with Keap1 causes an increase in the nuclear factor erythroid 2-related factor 2 (Nrf2) protein levels, which in turn, regulates the expression of antioxidant proteins that can protect the cells from oxidative stress.
ER-α36↓, Decreased ER-α
LDHA↓, inhibited growth, LDHA activity, and apoptotic induction
lipid-P↑, induction of oxidative stress, increased lipid peroxidation,
AP-1↓, anti-inflammatory qualities of withaferin A are specifically attributed to its inhibition of pro-inflammatory molecules, α-2 macroglobulin, NF-κB, activator protein 1 (AP-1), and cyclooxygenase-2 (COX-2) inhibition,
COX2↓,
RenoP↑, showing strong evidence of the renoprotective potential of withaferin A due to its anti-inflammatory activity
PDGFR-BB↓, attenuating the BB-(PDGF-BB) platelet growth factor
SIRT3↑, by increasing the sirtuin3 (SIRT3) expression
MMP2↓, withaferin A inhibits matrix metalloproteinase-2 (MMP-2) and MMP-9,
MMP9↓,
NADPH↑, but also provokes mRNA stimulation for a set of antioxidant genes, such as NADPH quinone dehydrogenase 1 (NQO1), glutathione-disulfide reductase (GSR), Nrf2, heme oxygenase 1 (HMOX1),
NQO1↑,
GSR↑,
HO-1↑,
*SOD2↑, cardiac ischemia-reperfusion injury model. Withaferin A triggered the upregulation of superoxide dismutase SOD2, SOD3, and peroxiredoxin 1(Prdx-1).
*Prx↑,
*Casp3?, and ameliorated cardiomyocyte caspase-3 activity
eff↑, combination with doxorubicin (DOX), is also responsible for the excessive generation of ROS
Snail↓, inhibition of EMT markers, such as Snail, Slug, β-catenin, and vimentin.
Slug↓,
Vim↓,
CSCs↓, highly effective in eliminating cancer stem cells (CSC) that expressed cell surface markers, such as CD24, CD34, CD44, CD117, and Oct4 while downregulating Notch1, Hes1, and Hey1 genes;
HEY1↓,
MMPs↓, downregulate the expression of MMPs and VEGF, as well as reduce vimentin, N-cadherin cytoskeleton proteins,
VEGF↓,
uPA↓, and protease u-PA involved in the cancer cell metastasis
*toxicity↓, A was orally administered to Wistar rats at a dose of 2000 mg/kg/day and had no adverse effects on the animals
CDK2↓, downregulated the activation of Bcl-2, CDK2, and cyclin D1
CDK4↓, Another study also demonstrated the inhibition of Hsp90 by withaferin A in a pancreatic cancer cell line through the degradation of Akt, cyclin-dependent kinase 4 Cdk4,
HSP90↓,

2751- BetA,    Betulinic acid inhibits proliferation and triggers apoptosis in human breast cancer cells by modulating ER (α/β) and p53
- in-vitro, BC, MDA-MB-231 - in-vitro, BC, MCF-7
tumCV↓, After BA treatment, the cell viability of MCF-7 and MDA-MB-231 significantly reduced as early as the minimal concentration of 2.5 μM BA at both 24 and 48 h
ER-α36↓, Upon treating the cells with BA, the expression levels of ERα in MCF-7 and MDA-MB-231 significantly decreased in all BA concentrations, particularly in the highest one of 30 μM

687- EGCG,    Estrogen receptor-α36 is involved in epigallocatechin-3-gallate induced growth inhibition of ER-negative breast cancer stem/progenitor cells
- in-vitro, BC, MDA-MB-231 - in-vitro, BC, MDA-MB-468
ER-α36↓,

1303- EGCG,    (-)-Epigallocatechin-3-gallate induces apoptosis in human endometrial adenocarcinoma cells via ROS generation and p38 MAP kinase activation
- in-vitro, EC, NA
TumCP↓,
ER-α36↓,
cycD1/CCND1↓,
ERK↑,
Jun↓,
BAX↑,
Bcl-2↓,
cl‑Casp3↑,
ROS↑,
p38↑,

935- Gallo,    Galloflavin, a new lactate dehydrogenase inhibitor, induces the death of human breast cancer cells with different glycolytic attitude by affecting distinct signaling pathways
- in-vitro, BC, MCF-7 - in-vitro, BC, MDA-MB-231
LDH↓, our experimental data show that the inhibition of LDH caused by GF can exert comparable growth inhibitory effects on breast cancer cells
ROS↑, induction of an oxidative stress condition
TumCP↓, Galloflavin (GF), a recently identified lactate dehydrogenase inhibitor, hinders the proliferation of cancer cells by blocking glycolysis and ATP production.
Glycolysis↓,
ATP↓,
ER-α36↓, In MCF-7 cells we observed a down regulation of the ERα-mediated signaling needed for cell survival
Apoptosis?, mechanism of cell death was found to be apoptosis induction

1234- Gra,    Graviola attenuates DMBA-induced breast cancer possibly through augmenting apoptosis and antioxidant pathway and downregulating estrogen receptors
- in-vivo, BC, NA
Apoptosis↑,
BAX↑,
P53↑,
Casp3↑,
ER-α36↓, downregulating the ER-α gene
lipid-P↓,

3002- RosA,    Anticancer Effects of Rosemary (Rosmarinus officinalis L.) Extract and Rosemary Extract Polyphenols
- Review, Var, NA
TumCG↓, SW480 colon cancer cells and found RE to significantly decrease cell growth at a concentration of 31.25 µg/mL (48 h),
TumCP↓, Cell proliferation was dramatically decreased and cell cycle arrest was induced in HT-29 and SW480 c
TumCCA↑,
ChemoSen↑, RE enhanced the inhibitory effects of the chemotherapeutic drug 5-fluorouracil (5-FU) on proliferation and sensitized 5-FU resistant cells
NRF2↑, HCT116 ↑ Nrf2, ↑ PERK, ↑ sestrin-2, ↑ HO-1, ↑ cleaved-casp 3
PERK↑,
SESN2↑,
HO-1↑,
cl‑Casp3↑,
ROS↑, HT-29 ↑ ROS accumulation, ↑ UPR, ↑ ER-stress
UPR↑,
ER Stress↑,
CHOP↑, HT-29: ↑ ROS levels, ↑ HO-1 and CHOP
HER2/EBBR2↓, SK-BR-3: ↑ FOS levels, ↑ PARP cleavage, ↓ HER2, ↓ ERBB2, ↓ ERα receptor.
ER-α36↓,
PSA↓, LNCaP : ↑ CHOP, ↓ PSA production, ↑ Bax, ↑ cleaved-casp 3, ↓ androgen receptor expression
BAX↑,
AR↓,
P-gp↓, A2780: ↓ P-glyco protein, ↑ cytochrome c gene, ↑ hsp70 gene
Cyt‑c↑,
HSP70/HSPA5↑,
eff↑, This study noted that the rosemary essential oil was more potent than its individual components (α-pinene, β-pinene, 1,8-cineole) when tested alone at the same concentrations.
p‑Akt↓, A549: ↓ p-Akt, ↓ p-mTOR, ↓ p-P70S6K, ↑ PARP cleavage
p‑mTOR↓,
p‑P70S6K↓,
cl‑PARP↑,
eff↑, RE containing 10 µM equivalent of CA, or 10 µM CA alone (96 h) potentiated the ability of vitamin D derivatives to inhibit cell viability and proliferation, induce apoptosis and cell cycle arrest and increase differentiation of WEHI-3BD murine leukem

1494- SFN,  doxoR,    Sulforaphane potentiates anticancer effects of doxorubicin and attenuates its cardiotoxicity in a breast cancer model
- in-vivo, BC, NA - in-vitro, BC, MCF-7 - in-vitro, Nor, MCF10
CardioT↓, SFN (4 mg/kg, 5 days/week) protected against mortality and cardiac dysfunction induced by DOX
*GSH↑, Rats Hearts: SFN and DOX co-treatment reduced MDA and 4-HNE adduct formation and also prevented DOX-induced depletion of GSH levels
*ROS↓, SFN reduces DOX-induced oxidative stress in the heart of non-tumor bearing rats.
*NRF2↑, activates Nrf2 in rat hearts during DOX treatment
NRF2∅, SFN does not interfere with DOX toxicity or Nrf2 activity in breast cancer cell lines
HDAC↓, SFN acts synergistically with DOX to inhibit HDAC and DNMT activity, decrease ERα detection and increase caspase-3 activity
DNMTs↓,
Casp3↑,
ER-α36↓, ERα levels in MCF-7, MDA-MB-231
Remission↑, SFN+DOX treatment (with a total DOX dose of 20 mg/kg) was able to eradicate the tumors in all rats by day 35 after tumor implantation
eff↑, SFN (4 mg/kg oral; 5 days/week for 5 weeks) with DOX (total of 10 or 20 mg/kg i.p. administered over 4 weeks) and showed that in combination with SFN, the dosage of DOX could be < by 50% while still eliciting the same anti-cancer effects as DOX alone
ROS↑, Increased generation of reactive oxygen species (ROS), an altered redox status, and aerobic glycolysis for energy production distinguish highly proliferative cancer cells from normal healthy cells
selectivity?, ROS production... distinguish highly proliferative cancer cells from normal healthy cells


Showing Research Papers: 1 to 9 of 9

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 9

Pathway results for Effect on Cancer / Diseased Cells:


Redox & Oxidative Stress ⓘ

ATF3↑, 1,   GSR↑, 1,   HO-1↑, 2,   lipid-P↓, 1,   lipid-P↑, 1,   NQO1↑, 1,   NRF2↑, 2,   NRF2∅, 1,   ROS↑, 6,   SIRT3↑, 1,   SOD↓, 1,  

Mitochondria & Bioenergetics ⓘ

ATP↓, 1,   CDC2↓, 1,   mitResp↓, 1,   MMP↓, 2,   XIAP↓, 1,  

Core Metabolism/Glycolysis ⓘ

Glycolysis↓, 1,   LDH↓, 1,   LDHA↓, 1,   NADPH↑, 1,  

Cell Death ⓘ

Akt↓, 1,   p‑Akt↓, 2,   Apoptosis?, 1,   Apoptosis↑, 2,   BAX↑, 3,   Bcl-2↓, 2,   Casp↑, 1,   Casp3↑, 2,   cl‑Casp3↑, 3,   cl‑Casp9↑, 1,   Chk2↓, 1,   Cyt‑c↑, 2,   HEY1↓, 1,   IAP1↓, 1,   MAPK↑, 1,   Mcl-1↓, 1,   p38↑, 2,   survivin↓, 1,   TumCD↑, 1,  

Kinase & Signal Transduction ⓘ

HER2/EBBR2↓, 1,  

Transcription & Epigenetics ⓘ

H3↑, 1,   tumCV↓, 1,  

Protein Folding & ER Stress ⓘ

CHOP↑, 2,   ER Stress↑, 2,   HSP70/HSPA5↑, 1,   HSP90↓, 1,   PERK↑, 1,   UPR↑, 1,  

Autophagy & Lysosomes ⓘ

SESN2↑, 1,  

DNA Damage & Repair ⓘ

CHK1↓, 1,   DNAdam↑, 1,   DNMTs↓, 1,   P53↑, 3,   PARP↑, 1,   cl‑PARP↑, 1,   γH2AX↑, 2,  

Cell Cycle & Senescence ⓘ

CDK1↓, 1,   CDK2↓, 1,   CDK4↓, 2,   cycA1/CCNA1↓, 1,   CycB/CCNB1↓, 1,   cycD1/CCND1↓, 1,   cycE/CCNE↓, 1,   P21↑, 1,   p‑RB1↓, 1,   TumCCA↑, 2,  

Proliferation, Differentiation & Cell State ⓘ

CSCs↓, 2,   EMT↓, 1,   ERK↑, 1,   FOXO↑, 1,   FOXO3↑, 1,   HDAC↓, 1,   Jun↓, 1,   p‑mTOR↓, 1,   NOTCH↓, 1,   NOTCH1↓, 1,   p‑P70S6K↓, 1,   STAT3↓, 1,   TumCG↓, 1,  

Migration ⓘ

AP-1↓, 1,   ER-α36↓, 9,   MMP2↓, 2,   MMP9↓, 1,   MMPs↓, 1,   N-cadherin↓, 1,   Slug↓, 1,   Snail↓, 1,   TumCP↓, 3,   uPA↓, 1,   Vim↓, 1,   β-catenin/ZEB1↓, 1,  

Angiogenesis & Vasculature ⓘ

ATF4↑, 1,   PDGFR-BB↓, 1,   VEGF↓, 1,  

Barriers & Transport ⓘ

P-gp↓, 1,  

Immune & Inflammatory Signaling ⓘ

COX2↓, 2,   IL6↓, 1,   NF-kB↓, 2,   PSA↓, 1,   TNF-α↓, 1,  

Hormonal & Nuclear Receptors ⓘ

AR↓, 1,  

Drug Metabolism & Resistance ⓘ

ChemoSen↑, 3,   Dose↝, 1,   eff↑, 6,   RadioS↑, 2,   selectivity?, 1,   selectivity↑, 1,  

Clinical Biomarkers ⓘ

AR↓, 1,   E6↓, 1,   E7↓, 1,   HER2/EBBR2↓, 1,   IL6↓, 1,   LDH↓, 1,   PSA↓, 1,  

Functional Outcomes ⓘ

CardioT↓, 1,   chemoP↑, 1,   Remission↑, 1,   RenoP↑, 1,  
Total Targets: 118

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress ⓘ

GSH↑, 1,   NRF2↑, 1,   Prx↑, 1,   ROS↓, 2,   ROS∅, 1,   SOD2↑, 2,  

Cell Death ⓘ

Casp3?, 1,  

Functional Outcomes ⓘ

toxicity↓, 1,  
Total Targets: 8

Scientific Paper Hit Count for: ER-α36, estrogen receptor alpha (ERα) protein variant
2 Ashwagandha(Withaferin A)
2 EGCG (Epigallocatechin Gallate)
1 Betulinic acid
1 Galloflavin
1 Graviola
1 Rosmarinic acid
1 Sulforaphane (mainly Broccoli)
1 doxorubicin
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

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