Prinaberel(ERB-041) is a potent and selective ERbeta agonist; being >200-fold selective for ERbeta.IC50 value:Target: ERbeta agonistin vitro: Treatment with ERβ selective estrogen agonists liquiritigenin and ERB-041 reduced the ability to invade a reconstituted basement membrane and to migrate in response to the cellular stimulus [1]. Pretreatment the PMs with ERB-041 resulted in a significant inhibition of LPS-induced iNOS expression and NF-kappaB activation by preventing its nuclear translocation [3].in vivo: Tumor numbers and volume were reduced by 60% and 84%, respectively, in the Erb-041-treated group as compared with UVB (alone) control. This inhibition in tumorigenesis was accompanied by the decrease in proliferating cell nuclear antigen (PCNA), cyclin D1, VEGF, and CD31, and an increase in apoptosis [2].
Estrone sulfate-d4 (sodium) is deuterium labeled Estrone sulfate (sodium). Estrone sulfate, a biologically inactive form of estrogen, is a major circulating plasma estrogen that is converted into the biologically active estrogen, estrone (E1) by steroid sulfatase (STS). strone sulfate can be used for the research of breast cancer[1][2].
4',2-Dihydroxy-4,6-dimethoxydihydrochalcone, an estrogen agonist, shows binding affinity for bovine uterine estrogen receptor with an IC5050 of 15 μM[1].
Tracheloside is an antiestrogenic lignin. Tracheloside promotes keratinocyte proliferation through ERK1/2 stimulation. Tracheloside is a good candidate to promote wound healing[1].
Ridaifen-B (RID-B) is a potent antagonist of estrogen receptor α (ERα) with IC50 of 52.4 nM, a tamoxifen (HY-13757A) derivative[1]. Ridaifen-B is a high affinity, selective, inverse agonist at CB2 receptor (Ki=43.7 nM) over 17 folds CB1 receptor (Ki=732 nM). Ridaifen-B modulates G-protein (IC50=300 nM) and adenylyl cyclase activity with potency values predicted by CB2 affinity (IC50=134 nM). Ridaifen-B has anti-inflammatory, anti-cancer, and anti-osteoclastogenic effects[1][3].
Arzoxifene (LY353381) is an orally active selective estrogen receptor modulator with a fixed ring structure similar to raloxifene. Arzoxifene has minimal side effects with powerful antiestrogenic effects on breast cancer and endometrium, with equally strong favorable estrogenic effects on bone and lipid profile[1].
Acolbifene (EM-652) hydrochloride, the active metabolite of EM800, is an orally active pure antiestrogen and selective estrogen receptor antagonist with an IC50 of of 0.110 nM in T-47D cells. Acolbifene (EM-652) hydrochloride possesses potent and pure anticarcinogenic properties[1][2].
(E/Z)-4-Hydroxytamoxifen is a racemic compound of (Z)-4-Hydroxytamoxifen and (E)-4-Hydroxytamoxifen isomers. (E/Z)-4-Hydroxytamoxifen is an estrogen receptor modulator.
Ferutinin, a natural terpenoid compound, is an estrogen receptor ERα agonist and estrogen ERβ-receptor agonist/antagonist with IC50s of 33.1 nM and 180.5 nM, respectively. Ferutinin acts as an electrogenic Ca2+-ionophore that increases calcium permeability of lipid bilayer membranes, mitochondria. Ferutinin possesses estrogenic, antitumor, antibacterial and antiinflammatory activities[1][2].
Cholesterol-18O is the deuterium labeled Cholesterol. Cholesterol is the major sterol in mammals and is makes up 20-25% of structural component of the plasma membrane. Plasma membranes are highly permeable to water but relatively impermeable to ions and protons. Cholesterol plays an important role in determining the fluidity and permeability characteristics of the membrane as well as the function of both the transporters and signaling proteins[1][2]. Cholesterol is also an endogenous estrogen-related receptor α (ERRα) agonist[3][4].
Imlunestrant (LY3484356) is an orally active selective estrogen receptor (ER) degrader (SERD). Imlunestrant (LY3484356) could be used in the study for ER+, HER2-advanced breast cancer[1].
3'-Hydroxymirificin (compound 3) is a naural compound that can be isolated from Pueraria lobata roots. 3'-Hydroxymirificin (compound 3) possesses estrogenic activity and anti-proliferation of MCF-7 human breast carcinoma cells[1].
ERA63 is a selective estrogen receptor α agonist.
(20S)-Protopanaxatriol is a metabolite of ginsenoside, works through the glucocorticoid receptor (GR) and oestrogen receptor (ER), and is also a LXRα inhibitor.
Corifollitropin alfa (Org 36286) is a long-acting recombinant follicle-stimulating hormone (FSH) analog. Corifollitropin alfa is a FSH Receptor agonist with an EC50 of 5.0 pM. Corifollitropin alfa stimulates ovulation and can be used in the research of infertility[1][2][3].
OBHS is an estrogen receptor α (ERα) inhibitor. OBHS can also be used as a blowing agent[1][2].
ER degrader 5 is a potent estrogen receptor (ER) degrader. ER degrader 5 shows anti-proliferation activity. ER degrader 5 can be used for the research of breast cancer[1].
Giredestrant tartrate (GDC-9545 tartrate), a non-steroidal ER ligand, is an orally active and selective estrogen receptor (ER) antagonist. Giredestrant tartrate potently competes with estradiol for binding and induces a conformational change within the ER ligand binding domain. Anti-tumor activity[1].
Elacestrant (RAD1901) is a selective and orally available estrogen receptor (ER) degrader with IC50 values of 48 and 870 nM for ERα and ERβ, respectively.
Tamoxifen-d3 is the deuterium labeled Tamoxifen[1]. Tamoxifen (ICI 47699) is an orally active, selective estrogen receptor modulator (SERM) which blocks estrogen action in breast cells and can activate estrogen activity in other cells, such as bone, liver, and uterine cells[2][3][4]. Tamoxifen is a potent Hsp90 activator and enhances the Hsp90 molecular chaperone ATPase activity. Tamoxifen also potent inhibits infectious EBOV Zaire and Marburg (MARV) with IC50 of 0.1 μM and 1.8 μM, respectively[6]. Tamoxifen activates autophagy and induces apoptosis[5]. Tamoxifen also can induce gene knockout of CreER(T2) transgenic mouse[7].
Enclomiphene ((E)-Clomiphene) hydrochloride is a potent and orally active non-steroidal estrogen receptor antagonist, with antioestrogenic property. Enclomiphene hydrochloride can be used for the research of ovarian dysfunction, testosterone deficiency, male hypogonadism and type 2 diabetes[1].
Endoxifen Z-isomer hydrochloride is the most important Tamoxifen metabolite responsible for eliciting the anti-estrogenic effects of this drug in breast cancer cells expressing estrogen receptor-alpha (ERα). Endoxifen inhibits hERG tail currents at 50 mV in a concentration-dependent manner with IC50 values of 1.6 μM.IC50 value: 1.6 μM [1]Target: hERG Potassium Channel, Estrogen Receptor/ERREndoxifen is considered a prodrug, since it has a much higher potency for the estrogen receptor than its parent drug. Endoxifen inhibits the hERG channel protein trafficking to the plasma membrane in a concentration-dependent manner with Endoxifen being more potent than Tamoxifen. [1] Endoxifen is also shown to be a more potent inhibitor of estrogen target genes when ERβ is expressed. Additionally, low concentrations of Endoxifen observed in Tamoxifen treated patients with deficient CYP2D6 activity (20 to 40 nM) markedly inhibit estrogen-induced cell proliferation rates in the presence of ERβ, whereas much higher Endoxifen concentrations are needed when ERβ is absent.[2]
PAC comprises an antibody conjugated via a linker to a PROTAC. PAC extracts from patent WO2017201449A1, compound PAC1. PAC is a more marked estrogen receptor-alpha (ERα) degrader compared to PROTAC (without Ab).
Lindleyin, isolated from Rhei rhizoma, mediates hormonal effects through estrogen receptors. Lindleyin binds to ERα with estrogenic activity[1].
Y134 is a selective and orally active oestrogen receptor (ER) modulator (SERM), exhibits potent antagonist activity at ERα and ERβ. Y134 shows 121.1-fold selectivity for ERα (Ki=0.09 nM) over ERβ (Ki=11.31 nM). Y134 inhibits oestrogen-stimulated proliferation of ER-positive human breast cancer cells[1].