GAT100 is a potent and covalent negative allosteric modulator (NAM). GAT-100 behaved as a robust positive allosteric modulator of binding of orthosteric agonist CP55,940. This novel covalent probe can serve as a useful tool for characterizing CB1R allosteric ligand-binding motifs.
GAT229 is a positive allosteric modulator of cannabinoid receptor 1 (CB1) and the S-(-) enantiomer of the CB1 modulator GAT211. It does not activate the receptor on its own but enhances the binding and activity of CB agonists. GAT229 (1 μM) enhances the binding of the CB1 full agonist CP 55,940 to CHO cells expressing human recombinant CB1 (hCB1), as well as the activity of 2-arachidonoyl glycerol , arachidonoyl ethanolamide , and CP 55,940 in arrestin2 recruitment assays and increases ERK1/2 and PLCβ3 phosphorylation in HEK293 cells expressing hCB1. GAT229 (1 μM) enhances depolarization-induced suppression of excitation but does not inhibit excitatory postsynaptic currents (EPSCs) in murine autaptic hippocampal neurons. GAT229 (0.2%, topical) reduces intraocular pressure by 5.8 and 7.7 mm Hg after 6 and 12 hours, respectively, in a transgenic mouse model of ocular hypertension using nose, ear, eye mutation (nee) mice.
mGlu4 receptor agonist 1 (compound 62) is a highly effective positive allosteric modulator of mGlu4 receptors, displaying an EC 50 of 308 nM. Additionally, it exhibits noteworthy anxiolytic and antipsychotic properties [1].
N-terminally extended form of human hemopressin that acts as a selective CB1 receptor agonist. Increases intracellular Ca2+ levels in cells expressing CB1 receptors in vitro. Also high affinity CB2 positive allosteric modulator (Ki = 50 nM).
ATI-2341 is an effective functionally selective allostericagonist for the c-x-c chemokine receptor type 4 (CXCR4), which ACTS as a biased ligand in favor of G G G G G 1 activation instead of G G G G G 13.ATI-2341 activates the inhibitory heterotrimer G p
Milbemectin is composed of 30% milbemycin A3 and 70% milbemycin A4, exhibiting acaricidal and nematocidal properties effective against adult spider mites, their eggs, and C. elegans, with IC50 values of 5.3, 41.1, and 9.5 µg ml, respectively. It functions as an allostericagonist of the Drosophila RDL GABA receptor, and demonstrates efficacy against the pinewood nematode, B. xylophilus, with an LC20 of 0.0781 mg liter.
Mevidalen, also known as LY3154207, is a novel, potent, and subtype selective human D1 positive allosteric modulator (PAM) with minimal allostericagonist activity (EC50 = 3 nM). In contrast to orthosteric agonists, LY3154207 showed a distinct pharmacological profile without a bell-shaped dose-response relationship or tachyphylaxis in preclinical models. Identification of a crystalline form of free LY3154207 from the discovery lots was not successful. Instead, a novel cocrystal form with superior solubility was discovered and determined to be suitable for development. LY3154207 is now in clinical development as a potential first-in-class D1 PAM for Lewy body dementia..
RVD-Hpα TFA is the N-terminally extended form of human hemopressin that acts as a selectiveCB1receptoragonist. RVD-Hpα TFA increases intracellular Ca2+levels in cells expressingCB1receptors in vitro. RVD-Hpα TFA also high affinityCB2positive allosteric modulator (Ki=50 nM).
Smoothened (SMO) is a GPCR-like receptor which, with Patched, mediates hedgehog signaling to regulate gene expression through the Gli transcription factors. 20(S)-hydroxy Cholesterol (20(S)-OHC) is an oxysterol which binds SMO and activates hedgehog signaling (EC50 = 3 μM), and this activation is selective for the nat-20(S)-OHC enantiomer. Nat-20(S)-OHC synergizes with the SMO agonist SAG, suggesting an allosteric effect. Nat-20(S)-yne is a form of nat-20(S)-OHC with a terminal alkyne group, which can be used in linking reactions known as click chemistry. Click chemistry involves highly dependable and specific azide-alkyne bioconjugation reactions and can be used to capture or immobilize bioactive molecules. Thus, nat-20(S)-yne has been conjugated with magnetic beads to demonstrate that nat-20(S)-OHC directly binds SMO.
VCP-746 is a potent adenosine A2B receptor agonist that stimulates anti-fibrotic signalling. VCP746 reduces hypertrophy in a rat neonatal cardiac myocyte model. VCP746 is a hybrid molecule consisting of an adenosine moiety linked to an adenosine A1 receptor (A1AR) allosteric modulator moiety. At the A1AR, VCP746 mediated cardioprotection in the absence of haemodynamic side effects such as bradycardia.
SS-RJW100 is an enantiomer of RJW100, known as a racemic agonist that targets two nuclear receptors: liver receptor homolog 1 (LRH-1) and steroidogenic factor 1 (SF-1). In vitro experiments reveal that SS-RJW100 promotes the recruitment of coregulator protein fragments and enhances the interaction with the transcriptional intermediary factor 2 (Tif2) coactivator specifically for LRH-1. Additionally, SS-RJW100 disrupts the allosteric activation networks of LRH-1, displaying suboptimal thermal stability [1] [2].
FFA2 allostericagonist. Inhibits forskolin-induced cAMP increase and stimulates 35SGTPγS binding in biochemical assays (pEC50 values are 6.9 and 7.23, respectively). Binds at allosteric binding site. In functional assays, displays positive allosteric modulation of FFA-induced Gi signaling and negative allosteric modulation of FFA-induced Gq/G11 signaling. Inhibits lipolytic effect of isoproterenol (pEC50 = 5.03) and induces migration of human neutrophils in vitro. Bolognini et al (2016) A novel allosteric activator of free fatty acid 2 receptor displays unique Gi-functional bias. J.Biol.Chem. 291 18915 PMID:27385588 |Sergeev et al (2017) A single extracellular amino acid in free fatty acid receptor 2 defines antagonist species selectivity and G protein selection bias. Sci.Rep. 7 13741 PMID:29061999
nAChR agonist CMPI hydrochloride is a potent and selective positive allosteric modulator (PAM) of nAChR containing a α4:α4 subunit interface. nAChR agonist CMPI hydrochloride enhances the response of (α4) 3 (β2) 2 nAChR to ACh (10 μM) with an EC 50 of 0.26 μM. nAChR agonist CMPI hydrochloride has potential for the research of nicotine dependence and many neuropsychiatric conditions associated with decreased brain cholinergic activity.
TASP0433864 is a positive allosteric modulator of metabotropic glutamate 2 receptor with EC50 values of 199 and 206 nM at human and rat mGlu2 receptors, respectively, without exerting agonist activity at rat mGlu2 receptor.