2. Signaling Pathways
  3. GPCR/G Protein
    Neuronal Signaling
  4. Orexin Receptor (OX Receptor)

Orexin Receptor (OX Receptor)

Hypocretin Receptor; HCRT Receptor

Orexin Receptor (OX Receptor)

Related Products

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The orexin receptors (hypocretin receptors) are a family of G protein-coupled receptors and consist of orexin receptor 1 (OX1R) and orexin receptor 2 (OX2R) subtypes. Orexin receptors are expressed throughout the central nervous system and are involved in the regulation of the sleep/wake cycle.

Orexin A binding to OX1R and OX2R with similar affinity, and orexin B binding to OX2 with higher affinity than OX1R. OX1R is mainly expressed in the prefrontal and infralimbic cortex, hippocampus, paraventricular thalamic nucleus, and locus coeruleus. OX2R is mainly distributed in the cerebral cortex, septal nuclei, lateral hypothalamus, hippocampus, and hypothalamic nuclei.

Both OX1R and OX2R are coupled via Gq/11 to the activation of phospholipase C, leading to an elevation of intracellular Ca2+ levels. Moreover, OX2R also couples via Gs and Gi/o to the cAMP pathways.

Orexin Receptor (OX Receptor) Related Products (55):

Cat. No. Product Name Effect Purity
  • HY-106224A
    Orexin A (human, rat, mouse) (TFA)
    		Agonist 98.33%
    Orexin A (human, rat, mouse) (Hypocretin-1 (human, rat, mouse)) TFA, a 33 amino acid excitatory neuropeptide, orchestrates diverse central and peripheral processes. Orexin A (human, rat, mouse) TFA is a specific, high-affinity agonist for G-protein-coupled receptor OX1R. Orexin A (human, rat, mouse) TFA has a role in the regulation of feeding behavior. Orexin A (human, rat, mouse) TFA is an effective anti-nociceptive and anti-hyperalgesic agent in mice and rats.
  • HY-10805
    Almorexant
    		Antagonist 99.71%
    Almorexant (ACT 078573) is an orally active, potent and competitive dual orexin receptor antagonist, with Kd values of 1.3 nM (OX1) and 0.17 nM (OX2), respectively. Almorexant reversibly blocks signaling of orexin-A and orexin-B peptides. Almorexant totally blocked the intracellular Ca2+ signal pathway. Almorexant stimulates caspase-3 activity in AsPC-1 cells and induces apoptosis.
  • HY-10895A
    SB-334867 free base
    		Antagonist 99.88%
    SB-334867 free base (SB334867A free base) is an excellent, selective and blood–brain barrier permeable orexin-1 (OX1) receptor antagonist, shows selectivity over OX2 (pKb=7.4), 100-fold over 5-HT2B, 5-HT2C with pKi values of 5.4 and 5.3, respectively. SB-334867 reduces ethanol consumption and inhibits the acquisition of morphine-induced sensitization to locomotor activity in vivo.
  • HY-10805A
    Almorexant hydrochloride
    		Antagonist 99.98%
    Almorexant (ACT 078573) hydrochloride is an orally active, potent and competitive dual orexin receptor antagonist, with Kd values of 1.3 nM (OX1) and 0.17 nM (OX2), respectively. Almorexant hydrochloride reversibly blocks signaling of orexin-A and orexin-B peptides. Almorexant hydrochloride totally blocked the intracellular Ca2+ signal pathway. Almorexant hydrochloride stimulates caspase-3 activity in AsPC-1 cells and induces apoptosis.
  • HY-10896
    JNJ-10397049
    		Antagonist 99.91%
    JNJ-10397049 is a potent and selective orexin 2 receptor (OX2R) antagonist, with a pKi of 8.3. JNJ-10397049 is 600-fold selective for the OX2R over the OX1R.
  • HY-P99836
    Cudarolimab
    		Inhibitor
    Cudarolimab (IBI101) is a completely human anti-OX40 (CD134, a co stimulating molecule expressed by activated immune cells) antibody. Cudarolimab inhibits the binding of OX40 to its ligand OX40L. Cudarolimab has antitumor activity and can be used in cancer related research.
  • HY-137440A
    Firazorexton hydrate
    Firazorexton hydrate (TAK-994) is a potent, brain-penetrant, and orally active orexin type 2 receptor (OX2R) agonist (EC50: 19 nM). Firazorexton hydrate inhibits fragmentation of wakefulness and cataplexy-like episodes in mouse models of narcolepsy.
  • HY-153458
    Orexin receptor modulator-1
    		Modulator
    Orexin receptor modulator-1 is an orexin receptor modulator. Orexin receptor modulator-1 can be used for the research of substance addiction, panic disorder, anxiety, post-traumatic stress disorder, pain, depression, seasonal affective disorder, an eating disorder, or hypertension.
  • HY-19320
    Orexin 2 Receptor Agonist
    		Agonist 99.75%
    Orexin 2 Receptor Agonist is a potent (EC50 on OX2R is 23 nM) and OX2R-selective (OX1R/OX2R EC50 ratio is 70) agonist.
  • HY-109012
    Seltorexant
    		Antagonist 99.62%
    Seltorexant (JNJ-42847922) is an orally active, high-affinity, and selective orexin-2 receptor (OX2R) antagonist (pKi values of 8.0 and 8.1 for human and rat OX2R). Seltorexant (JNJ-42847922) crosses the blood-brain barrier and quickly occupies OX2R binding sites in the rat brain.
  • HY-109012A
    Seltorexant hydrochloride
    		Antagonist 99.90%
    Seltorexant hydrochloride (JNJ-42847922 hydrochloride) is an orally active, high-affinity, and selective OX2R antagonist (pKi values of 8.0 and 8.1 for human and rat OX2R). Seltorexant hydrochloride crosses the blood-brain barrier and quickly occupies OX2R binding sites in the rat brain.
  • HY-15653
    Filorexant
    		Antagonist 99.35%
    Filorexant (MK-6096) is an orally bioavailable potent and selective reversible antagonist of OX1 and OX2 receptor(<3 nM in binding).
  • HY-100452
    TCS-OX2-29
    		Antagonist 99.24%
    TCS-OX2-29 is a potent, high affinities and selective orexin-2 receptor (OX2R) antagonist with an IC50 value of 40 nM and a pKI value of 7.5. TCS-OX2-29 displays ~250-fold selectivity for OX2 over OX1.
  • HY-133898
    Danavorexton
    		Activator 98.36%
    Danavorexton (TAK-925) is an orexin receptor agonist.
  • HY-136181
    YNT-185 dihydrochloride
    		Agonist 99.39%
    YNT-185 dihydrochloride is a nonpeptide, selective orexin type-2 receptor (OX2R) agonist, with EC50s of 0.028 and 2.75 μM for OX2R and OX1R, respectively. YNT-185 dihydrochloride ameliorates narcolepsy-cataplexy symptoms in mouse models.
  • HY-10900
    TCS 1102
    		Antagonist 99.64%
    TCS 1102 is a potent, dual orexin receptor antagonist, with Ki values of 0.2 nM and 3 nM for OX2 and OX1 receptors, respectively. TCS 1102 demonstrates excellent brain peneration and moderate bioavailability in rats.
  • HY-106224
    Orexin A (human, rat, mouse)
    		Agonist 99.67%
    Orexin A (human, rat, mouse) (Hypocretin-1 (human, rat, mouse)), a 33 amino acid excitatory neuropeptide, orchestrates diverse central and peripheral processes. Orexin A (human, rat, mouse) is a specific, high-affinity agonist for G-protein-coupled receptor OX1R. Orexin A (human, rat, mouse) has a role in the regulation of feeding behavior. Orexin A (human, rat, mouse) is an effective anti-nociceptive and anti-hyperalgesic agent in mice and rats.
  • HY-P1339A
    Orexin B, human TFA
    		Agonist 98.08%
    Orexin B, human (TFA) is an endogenous agonist at Orexin receptor with Kis of 420 and 36 nM for OX1 and OX2, respectively.
  • HY-10895
    SB-334867
    		Antagonist 99.44%
    SB-334867 (SB 334867A) is an excellent,selective and blood–brain barrier permeable orexin-1 (OX1) receptor antagonist, shows selectivity over OX2 (pKb=7.4), 100-fold over 5-HT2B, 5-HT2C with pKi values of 5.4 and 5.3, respectively. SB-334867 reduces ethanol consumption and inhibits the acquisition of morphine-induced sensitization to locomotor activity in vivo.
  • HY-10898
    SB-674042
    		Antagonist 99.84%
    SB-674042 is a potent and selective non-peptide orexin OX1 receptor antagonist (Kd=5.03 nM), exhibits 100-fold selectivity for OX1 over OX2 receptors with IC50 values of 3.76 nM and 531 nM, respectively.