σ2 receptor

S1R agonist 2 is a selective S1R agonist with a Ki of 88 nM for S2R and 1.1 nM for S1R and is protective against ROS and NMDA-induced neurotoxicity.

KSK94 is a specific H3 receptor antagonist that inhibits H3, sigma-1, and sigma-2 receptors , with Ki values of 7.9, 2958, and 75.2 nM, respectively, and can be used to study injurious pain and neuropathic pain.

OPC-14523 hydrochloride is an orally active sigma and 5-HT1A receptor agonist with antidepressant-like activity, showing high affinity for the sigma receptor σ1 2 (IC50=47 56 nM), the 5-HT1A receptor (IC50=2.3 nM), and the 5-HT transporter (IC50=80 nM).

KSK68 is a potent dual sigma-1 and histamine H3 receptor antagonist with potential analgesic activity and high affinity for H3 receptors, sigma-1, sigma-2 receptors.KSK68 can be used in the study of pain related diseases.

Sigma-1 receptor antagonist 2 is a more potent and selective antagonist of the sigma-1 receptor (σ1 R, Ki = 3.88 nM) compared to the sigma-2 receptor (Ki = 1288 nM).

Sigma-1 receptor antagonist 3 is a potent and selective antagonist of Sigma-1 (σ1) receptor(Ki : 1.14 nM), has the potential for the neuropathic pain.

Ditolylguanidine (Di-o-tolylguanidine) is an agonist of sigma receptor (σ1 σ2 receptor).

OPC-14523, a 5-HT1A receptor agonist, is used potentially for the treatment of depression and neuropathic pain.

S1RA (E-52862)(E-52862) is a potent, selective antagonist of the sigma-1 receptor (σ1R, Ki=17 nM), demonstrating significant selectivity over the sigma-2 receptor (σ2R, Ki > 1000 nM).

S1RA hydrochloride (E-52862 hydrochloride) is an effective and specific sigma-1 receptor(σ1R, Ki: 17 nM) antagonist, and has good selectivity against σ2R (Ki > 1000 nM).

Siramesine (Lu 28-179)(Lu 28-179) is a selective sigma-2 receptor agonist, which has been shown to trigger cell death of cancer cells and to exhibit a potent anticancer activity in vivo.lysosome-destabilizing agent siramesine can induce rapid cell death in a number of cell lines at concentrations above 20 μM. In HaCaT cells, cell death was accompanied by caspase activation, rapid loss of mitochondrial membrane potential (MMP), cytochrome c release, cardiolipin peroxidation and typical apoptotic morphology, whereas in U-87MG cells most apoptotic hallmarks were not notable, although MMP was rapidly lost

PD 144418 oxalate is a highly potent and selective sigma 1 (σ1) receptor ligand with a Ki value of 0.08 nM for σ1 and 1377 nM for σ2, exhibiting negligible affinity for other receptors, ion channels, and enzymes, and demonstrating potential antipsychotic activity.

AB21 HCl is a selective antagonist of the σ1 receptor, with Kis of 13 nM for σ1 receptor and 102 nM for σ2 receptor. AB21 HCl is known for its ability to reduce mechanical hypersensitivity.

4-IBP is a selective σ1 agonist with high affinity for the σ1 receptor (Ki = 1.7 nM) and moderate affinity for the σ2 receptor (Ki = 25.2 nM).

UMB24 is an effective antagonist of the σ2 receptor, exhibiting dissociation constants (Ki values) of 170 nM for the σ2 receptor and 322 nM for the σ1 receptor. This compound mitigates cocaine-induced convulsions and hyperactivity without causing mortality.

AD186, a potent and selective S1R agonist, exhibits dissociation constants (Kis) of 2.7 nM for S1R and 27 nM for S2R. Notably, AD186 completely reverses the antiallodynic effect of BD-1063 [1].

Cutamesine dihydrochloride (SA4503 dihydrochloride) is a selective σ1 receptor agonist (IC50: 17.4 nM). It shows selectivity for σ1 over σ2 receptors, and inhibits angiotensin II-induced cardiomyocyte hypertrophy in vitro and attenuates myocardial hypertrophy in vivo. In a rat model of experimental stroke, it enhances brain plasticity and sensorimotor function.

Roluperidone (CYR-101), a novel cyclic amide derivative, exhibits high equipotent affinities for 5-HT2A and σ2 receptors with Ki values of 7.53 nM and 8.19 nM, respectively.

Vesamicol hydrochloride ((±)-AH5183 hydrochloride) is a acetylcholine transport inhibitor.

WLB-89462 (Compound 20c) is a selective σ2 receptor ligand with a K i of 13 nM, demonstrating neuroprotective properties and the capacity to ameliorate Aβ peptide-induced short-term memory impairment in rats. It exhibits a favorable ADMET profile, featuring good solubility, lack of CYP inhibition, strong metabolic stability, high permeability, effective brain penetration, and significant oral exposure in rodent models [1].

Siramesine hydrochloride (Lu 28-179 hydrochloride) is a selective sigma-2 receptor agonist, which has been shown to trigger cell death of Y cells and to exhibit a potent anticancer activity in vivo.

Glycerol phenylbutyrate (HPN-100) (GPB) is a new generation ammonia scavenger drug and it also is a sigma-2 (σ2) receptor ligand (pKi: 8.02).

Donecopride is a partial agonist of the serotonin (5-HT) receptor subtype 5-HT4E(Ki= 8.5 nM) and an inhibitor of acetylcholinesterase (AChE; IC50= 16 nM).1It is selective for AChE over butyrylcholinesterase (BChE; IC50= 3,530 nM) but does bind to 5-HT2Band sigma-2 (σ2) receptors (Ki= 1.6 nM for both) in a panel of 42 neurotransmitter receptors and transporters. Donecopride induces release of soluble amyloid precursor protein-α (sAPP-α) in COS-7 cells transiently expressing 5-HT4with an EC50value of 11.3 nM. Oral administration of donecopride (1 mg/kg) reduces brain soluble and insoluble amyloid-β (1-42) levels and increases the time spent exploring the novel object in the novel object recognition (NOR) test in the 5XFAD transgenic mouse model of Alzheimer's disease. Donecopride (3 mg/kg, p.o.) prevents a reduction in spontaneous alternation behavior induced by intracerebroventricular administration of soluble Aβ42 (sAβ42) in the Y-maze in mice.2 1.Lecoutey, C., Hedou, D., Freret, T., et al.Design of donecopride, a dual serotonin subtype 4 receptor agonist/acetylcholinesterase inhibitor with potential interest for Alzheimer's disease treatmentProc. Natl. Acad. Sci. USA111(36)E3825-E3830(2014) 2.Rochais, C., Lecoutey, C., Hamidouche, K., et al.Donecopride, a Swiss army knife with potential against Alzheimer's diseaseBr. J. Pharmacol.177(9)1988-2005(2020)

PB28 dihydrochloride is a selective and potent sigma 2 (σ2) receptor agonist and σ1 receptor antagonist with anti-SARS-CoV-2 activity and anti-tumor activity, which inhibits cell proliferation and invasion and suppresses SKF by modulating the PI3K-AKT-mTOR signaling pathway in renal cancer. It inhibits cell proliferation and invasion by regulating the PI3K-AKT-mTOR signaling pathway in renal cancer, inhibits calcium release from the endoplasmic reticulum of SK-N-SH neuroblastoma cells, and induces non-caspase-dependent apoptosis.