desensitization

CMPD101 is a membrane-permeable small-molecule inhibitor of GRK2/3 (IC50: 18 nM and 5.4 nM). Which can be used for the study of heart failure. CMPD101 exhibits less selectively against GRK1, GRK5, ROCK-2 and PKCα with IC50s of 3.1 μM , 2.3 μM, 1.4 μM and 8.1 μM, respectively.

Cyclothiazide is a benzothiadiazide that acts as a potentiator of AMPA receptorsthat potently inhibits AMPA receptor desensitization, positively modulating its response to glutamic acid (EC50 = 3.8 M).

Lecozotan HCl (SRA-333) is a potent and selective 5-HT antagonist that significantly enhances KCl-stimulated glutamate and acetylcholine release from the hippocampal dentate gyrus and has cognitive enhancing properties. Chronic administration of Lecozotan HCl did not induce 5-HT(1A) receptor tolerance or desensitization in a behavioral model demonstrating 5-HT(1A) receptor function.

GABAA receptor modulator-7 (compound 1m), a spirobarbiturate, acts as a modulator of the GABAA receptor. It can reverse the effects of anesthetics without interfering with GABA-induced desensitization and is applicable in the research of antiepileptic and anxiolytic drugs.

MSK-9 is an allosteric modulator of the P2X4 receptor, exhibiting dual actions of enhancing ion conductivity and delaying receptor desensitization. By stabilizing the receptor's open state, MSK-9 utilizes rigid 3-piperidinyl and hydrophobic menthyl substituents. MSK-9 is applicable in research related to multiple sclerosis (MS).

FPR2 agonist 5 is a selective agonist of formyl peptide receptor 2 (FPR2). It induces Ca2+ mobilization in HL60 cells transfected with FPR2, demonstrating an EC50 value of 1.2 μM, and causes FPR2 desensitization with an IC50 of 0.32 μM. Additionally, FPR2 agonist 5 exhibits neuroprotective effects by reducing LDH release, NO production, and the levels of IL-1β, IL-6, IL-33, and IL-10 in LPS-induced primary microglial cells from mice. It is utilized in research related to neuroinflammatory and inflammatory diseases.

GABAA receptor modulator-12 (Compound 5) is a modulator of the GABAA receptor. It inhibits anesthetic-induced desensitization of the GABAAα3β3γ2 receptor, with an IC50 of 0.2 μM. This compound is useful for research in central nervous system diseases.

GABAA receptor modulator-11 (Compound 4) is a modulator of the GABAA receptor. It inhibits anesthetic-induced desensitization of GABAAα1β3γ2 and α1β3 receptors with IC50 values of 5.1 μM and 3.1 μM, respectively. GABAA receptor modulator-11 is relevant for central nervous system disease research.

TDPAM02 is a positive allosteric modulator of the AMPA receptor GluA2. It specifically binds to the ligand-binding domain (LBD) of GluA2, with an IC50 of 1.4 nM for the GluA2 flop isoform. TDPAM02 stabilizes the activated conformation of the GluA2 receptor, delaying receptor inactivation or desensitization and maintaining rapid excitatory synaptic transmission in the central nervous system.

TRPA1 agonist-3 is a selective and orally active TRPA1 agonist, exhibiting EC50 values of 50.05 μM for human TRPA1 and 314.04 μM for mouse TRPA1 in HEK-293T cells. This compound does not activate hTRPV1, mTRPV2, hTRPV3, hTRPV4, hTRPC6, or hTRPM8 channels. Additionally, TRPA1 agonist-3 alleviates inflammatory pain in mice through channel desensitization mechanisms.

TDPAM01 acts as a positive allosteric modulator of the AMPA receptor GluA2. It specifically binds to the ligand-binding domain (LBD) of GluA2, with an IC50 value of 13.4 nM for the GluA2 flop subtype. TDPAM01 stabilizes the active conformation of the GluA2 receptor, delaying receptor inactivation or desensitization, thereby sustaining rapid excitatory synaptic transmission in the central nervous system.

GRK2 Inhibitor is an effective GRK2 inhibitor. It enhances GPCR signaling by preventing receptor desensitization, used for heart failure and cardiovascular remodeling research.

Meproadifen enhances activation and desensitization of the acetylcholine receptor-ionic channel complex (AChR).

ZQ-16 is a potent and highly selective agonist for the G protein-coupled receptor GPR84, demonstrating a half-maximal effective concentration (EC50) of 0.213 μM, and it activates multiple downstream signaling pathways including calcium mobilization, inhibition of cAMP accumulation, phosphorylation of extracellular signal-regulated protein kinase 1/2 (ERK1/2), receptor desensitization and internalization, and receptor-β-arrestin interaction, making it a useful tool compound for studying GPR84 function and a candidate for further optimization.

JAMI1001A is a positive allosteric modulator of the AMPA receptor, effectively modulating the deactivation and desensitization of both [flip] and [flop] receptor isoforms.

SAR247799 (S1P1 agonist 3) is a selective and G-protein-biased S1P1 agonist that activates downstream G-protein signaling pathways more preferentially than β-blocker proteins and internalized signaling pathways, activates S1P 1 on endothelial cells without causing receptor desensitization, and protects the endothelium without affecting lymphocyte populations, and can be used to study type 2 diabetes, endothelial dysfunction and vascular hyperpermeability.

AR-M 1000390 hydrochloride (ARM-390 HCl) , also known as ARM-390, is a low-internalizing nonpeptidic δ-selective opioid receptor agonist; derivative of SNC 80. Does not trigger acute desensitization of the analgesic response; reduces CFA-induced hyperalgesia. Brain penetrant following systemic administration.

RO5126946 is a Novel α7 nicotinic acetylcholine receptor-positive allosteric modulator. RO5126946 allosterically modulates α7nAChR activity. RO5126946 increased acetylcholine-evoked peak current and delayed current decay but did not affect the recovery of α7nAChRs from desensitization. In addition, RO5126946's effects were absent when nicotine-evoked currents were completely blocked by coapplication of the α7nAChR-selective antagonist methyl-lycaconitine.

(R)-PF-06256142, the R enantiomer of PF-06256142, exhibits low activity. PF-06256142 itself is distinguished as a potent and selective orthosteric D1 receptor agonist, with the capability to minimize receptor desensitization compared to dopamine and other catechol-containing agonists.

PKI(5-22)amide, an active inhibitory fragment of the cyclic AMP-dependent protein kinase (PKA) inhibitor, effectively prevents PKA activation. However, it does not reduce the homologous desensitization of CRF1 receptors [1] [2].

AMPA receptor modulator-6 is a unique dimeric positive allosteric modulator that effectively stabilizes the dimer interface of AMPA receptors by physically bridging two adjacent ligand-binding domains. This structural anchoring significantly slows receptor desensitization and deactivation, thereby enhancing glutamate-mediated synaptic transmission.

Proadrenomedullin (N-20) (ProADM N20) (bovine, porcine) is a peptide known for its strong hypotensive effects and inhibition of catecholamine release from chromaffin cells. It effectively suppresses catecholamine secretion in PC12 pheochromocytoma cells with an IC50 of 350 nM and prevents the desensitization of nicotinic cholinergic agonist-induced catecholamine release and nicotinic signal transduction, with an EC50 of approximately 270 nM for desensitization blockade, as evidenced by inhibited 22 Na+ uptake [1].

GTPγS tetralithium (Guanosine 5'-[γ-thio]triphosphate tetralithium) is a G-protein activator, a non-hydrolyzable GTP analog that protects proteins from proteolytic degradation.GTPγS tetralithium is involved in the detection of cells expressing recombinant receptors and endogenous receptors. GTPγS tetralithium is involved in the detection of GPCR signaling in cells expressing recombinant receptors as well as in cells and tissues expressing endogenous receptors, and can be assayed to measure agonist-induced desensitization of two human polymorphic α2B-adrenoceptor variants.

MB327, a bipyridine nonoxime compound, enhances neuromuscular function by restoring the activity of nicotinamide acetylcholine receptors (nAChRs) against carbachol desensitization through a typical type II PAM approach. Additionally, MB327 is effective in neutralizing nerve agent poisoning [1] [2].