1. GPCR/G Protein
    Neuronal Signaling
  2. Somatostatin Receptor

Somatostatin Receptor

Somatostatin receptors (SSTR1, 2A and B, 3, 4 and 5) belong to the G protein coupled receptor family. Somatostatin receptors are expressed in a variety of human tumors, including most tumors of neuroendocrine origin, breast tumors, certain brain tumors, renal cell tumors, lymphomas, and prostate cancer. Somatostatin triggers cytostatic and cytotoxic effects and has a general inhibitory effect on secretion mediated through its interaction with somatostatin receptors.

The SSTRs 1-4 display weak selectivity for somatostatin-14 binding, whereas SSTR5 is somatostatin-28-selective. Based on structural similarity and reactivity for octapeptide and hexapeptide somatostatin receptor analogs, SSTRs 2, 3 and SSTR5 belong to a similar somatostatin receptor subclass; SSTRs 1-4 react poorly with these analogs and belong to a separate subclass. All five somatostatin receptors are functionally coupled to inhibition of adenylyl cyclase via pertussis toxin-sensitive guanosine triphosphate (GTP)-binding proteins. mRNA for SSTRs 1-5 is widely expressed in brain and peripheral organs and displays an overlapping but characteristic pattern that is subtype-selective and tissue- and species-specific. All pituitary cell subsets express SSTR2 and SSTR5, with SSTR5 being more abundant. Individual pituitary cells coexpress multiple somatostatin receptor subtypes.

Somatostatin Receptor Related Products (58):

Cat. No. Product Name Effect Purity
  • HY-79135
    Pasireotide ditrifluoroacetate Agonist
    Pasireotide (SOM230) ditrifluoroacetate, a long-acting cyclohexapeptide somatostatin analogue, can improve agonist activity at somatostatin receptors (subtypes sst1/2/3/4/5, pKi=8.2/9.0/9.1/<7.0/9.9, respectively). Pasireotide ditrifluoroacetate exhibits antisecretory, antiproliferative, and proapoptotic activity[1][2].
  • HY-13466
    MK-4256 Antagonist 98.01%
    MK-4256 is a potent and selective SSTR3 antagonist with IC50s of 0.66 nM and 0.36 nM in human and mouse receptor binding assays, respectively.
  • HY-P0036
    Octreotide Agonist 99.31%
    Octreotide (SMS 201-995) is a somatostatin receptor agonist and synthetic octapeptide endogenous somatostatin analogue. Octreotide (SMS 201-995) can bind to the somatostatin receptor and mainly subtypes 2, 3, and 5, increases Gi activity, and reduces intracellular cAMP production. Octreotide (SMS 201-995) has antitumor activity, mediates apoptosis and may also be used in disease studies in acromegaly[1][2].
  • HY-17365
    Octreotide acetate Agonist 99.93%
    Octreotide acetate, a long-acting synthetic analog of native somatostatin, inhibits growth hormone, glucagon, and insulin more potently.
  • HY-102037
    SSTR5 antagonist 1 Antagonist 99.84%
    SSTR5 antagonist 1 (compound 25a) is a selective and orally available somatostatin receptor subtype 5 (SSTR5) antagonist with IC50s of 9.6 and 57 nM for hSSTR5 and mSSTR5, respectively[1].
  • HY-P4555
    (D-Phe5,Cys6,11,N-Me-D-Trp8)-Somatostatin-14 (5-12) amide Agonist
    (D-Phe5,Cys6,11,N-Me-D-Trp8)-Somatostatin-14 (5-12) amide (Compound 4) is a somatostatin analog with Kds of 0.61, 11.05, 23.5, 1200 and >1000 nM for SSTR5, SSTR3, SSTR2, SSTR1 and SSTR4, respectively[1].
  • HY-P4452
    PRL 2915 Antagonist
    PRL 2915 is a potent human somatostatin subtype 2 receptor (hsst2) antagonist with a Ki of 12 nM[1].
  • HY-P4469
    PRL 3195 Antagonist
    PRL 3195 is a somatostatin receptor antagonist with Kis of 6, 17, 66, 1000 and 1000 nM for human somatostatin receptors (sst5, sst2, sst3, sst1 and sst4, respectively)[1].
  • HY-P2545
    [Tyr1]-Somatostatin-14 could binds to SSTR2[1].
  • HY-114191
    SSTR5 antagonist 2 Antagonist
    SSTR5 antagonist 2 (compound 10) is a highly potent, oral active and selective somatostatin (receptor) subtype 5 (SSTR5) antagonist and has potential for the research of treat type 2 diabetes mellitus (T2DM)[1].
  • HY-142701
    SSTR4 agonist 4
    SSTR4 agonist 4 is a potent agonist of SSTR4. SSTR4 is expressed at relatively high levels in the hippocampus and neocortex, memory and learning regions, and Alzheimer's disease pathology. SSTR4 agonists are potent in rodent models of pain associated with acute and chronic associated anti-peripheral nociceptive and anti-inflammatory activity. SSTR4 agonist 4 has the potential for the research of pain (extracted from patent WO2021233428A1, compound 14)[1].
  • HY-P2090A
    Angiopeptin TFA Agonist 99.16%
    Angiopeptin TFA, a cyclic octapeptide analogue of somatostatin, is a weak sst2/sst5 receptor partial agonist with IC50 values of 0.26 nM and 6.92 nM, respectively. Angiopeptin TFA is a potent inhibitor of growth hormone release and insulin-like growth factor-1 (IGF-1) production. Angiopeptin TFA inhibits adenylate cyclase or stimulates extracellular acidification. Angiopeptin TFA has the potential for coronary atherosclerosis research[1][2].
  • HY-125382
    L-797591 Agonist
    L-797591 is a selective somatostatin receptor subtype 1 (SSTR1) agonist[1].
  • HY-145777
    AGI-43192 99.53%
    AGI-43192 is a potent inhibitor of methionine adenosyltransferase 2A (MAT2A). AGI-43192 is a potent, but limited brain-penetrant compound. AGI-43192 has the potential for exploring the effects of SAM modulation in the central nervous system (CNS) and research of cancer disease[1].
  • HY-108498
    L-817818 Agonist
    L-817818 is a potent and subtype-selective agonist of the somatostatin receptor. L-817818 provides a direct approach to defining somatostatin receptor physiological functions[1]
  • HY-111615A
    J-2156 TFA Agonist 99.98%
    J-2156 TFA is a high potent, selective somatostatin receptor type 4 (SST4 receptor) agonist with IC50s of 0.05 nM and 0.07 nM for human and rat SST4 receptors, respectively. J-2156 TFA has anti-inflammatory activity and it is used for the relief of mechanical allodynia and mechanical hyperalgesia in the ipsilateral hindpaws in rats[1][2].
  • HY-P1203A
    BIM-23056 TFA Antagonist
    BIM 23056 TFA, a linear octapeptide, is a potent sst3 and sst5 somatostatin receptor antagonist with Ki values of 10.8, 5.7, respectively[1].
  • HY-P1932
    Cortistatin-14 99.93%
    Cortistatin-14, a neuropeptide have structural similarity to somatostatin-14, binds and exerts its function via the somatostatin receptors (sst1-sst5). Cortistatin-14 shows anticonvulsive, neuroprotective effect and remarkable anti-inflammatory properties[1][2][3][4].
  • HY-P3124
    BIM-23190 Agonist
    BIM-23190, a somatostatin analog, a selective SSTR2 and SSTR5 agonist, exhibits Ki values of 0.34 nM and 11.1 nM for SSTR2 and SSTR5, respectively. BIM-23190 can be used in the study for cancer and acromegaly[1][3].
  • HY-P0036B
    Octreotide pamoate Agonist
    Octreotide (SMS 201-995) pamoate is a somatostatin receptor agonist and synthetic octapeptide endogenous somatostatin analogue. Octreotide pamoate can bind to the somatostatin receptors which are mainly subtypes 2, 3 and 5. Octreotide pamoate increases Gi activity and reduces intracellular cAMP production. Octreotide pamoate has antitumor activity, mediates apoptosis and may also be used in disease studies in acromegaly[1][2].