Somatostatin Receptor Agonist

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.

Octreotide acetate, a long-acting synthetic analog of native somatostatin, inhibits growth hormone, glucagon, and insulin more potently.

Pasireotide (SOM230), a long-acting cyclohexapeptide somatostatin analogue, can improve agonist activity at somatostatin receptors (subtypes sst1/2/3/4/5, pK_i=8.2/9.0/9.1/<7.0/9.9, respectively). Pasireotide can suppress GH, IGF-I and ACTH secretion, indicating potential efficacy in acromegaly and Cushing's disease. Pasireotide also exhibits antisecretory, antiproliferative, and proapoptotic activity.

L-797591 hydrochloride is a selective sst₁ agonist. L-797591 hydrochloride mimicks the effects of SRIF-14 and SRIF-28 by potently inhibiting either Forskolin (HY-15371)-stimulated or CRH-stimulated cAMP accumulation.

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.

Mazisotine (CNTX-0290) is an orally active, non-opioid somatostatin receptor 4 (SSTR4) agonist with an EC₅₀ of 4.7 nM. Mazisotine exerts significant analgesic effects in various nociceptive (inflammatory, osteoarthritic) and neuropathic pain models. Mazisotine can be used for pain research.

Pasireotide (SOM230) acetate, a long-acting cyclohexapeptide somatostatin analogue, can improve agonist activity at somatostatin receptors (subtypes sst1/2/3/4/5, pK_i=8.2/9.0/9.1/<7.0/9.9, respectively). Pasireotide acetate can suppress GH, IGF-I and ACTH secretion, indicating potential efficacy in acromegaly and Cushing's disease. Pasireotide acetate also exhibits antisecretory, antiproliferative, and proapoptotic activity.

CH 275 is a peptide analog of somatostatin and binds preferably to somatostatin receptor 1 (sst₁) with a K_i of 52 nM. CH 275 acts as a potent and selective sst₁ agonist (IC₅₀=30.9 nM) and also displays IC₅₀ values of 345 nM, >1 μM, >10 μM, >10 μM for human sst₃, sst₄, sst₂ and sst₅, respectively. CH 275 can be used for the research of alzheimer’s disease.

TT-232 (CAP-232), a somatostatin derivative, is a peptide SSTR1/SSTR4 agonist. TT-232 inhibits cancer cell proliferation and induces apoptosis. TT-232 is also a broad-spectrum anti-inflammatory and analgesic agent.

Pasireotide (SOM230) ditrifluoroacetate, a long-acting cyclohexapeptide somatostatin analogue, can improve agonist activity at somatostatin receptors (subtypes sst1/2/3/4/5, pK_i=8.2/9.0/9.1/<7.0/9.9, respectively). Pasireotide ditrifluoroacetate exhibits antisecretory, antiproliferative, and proapoptotic activity.

BIM-23190 hydrochloride, a somatostatin analog, a selective SSRT2 and SSRT5 agonist, exhibits K_i 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.

J-2156 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 is used for the relief of mechanical allodynia and mechanical hyperalgesia in the ipsilateral hindpaws in rats.

L-796778 acetate is a selective agonist of the sst3 receptor. In CHO-K1 cells expressing the hsst3 receptor, L-796778 acetate is a partial agonist that inhibits Forskolin (HY-15371)-stimulated cAMP production with an IC₅₀ value of 18 nM. L-796778 acetate has anticonvulsant effect.

L-803087 is a potent and selective somatostatin sst4 receptor agonist with a K_i of 0.7 nM. L-803087 is >280-fold higher than other somatostatin receptors. L-803087 facilitates AMPA-mediated hippocampal synaptic responses in vitro and increases kainate-induced seizures in mice.

Veldoreotide (DG3173) TFA a somatostatin analogue, binds to and activate the somatostatin receptors (SSTR) 2, 4, and 5. Veldoreotide TFA inhibits growth hormone (GH) secretion in adenomas compared with Octreotide (HY-P0036). Veldoreotide has the potential to be used as pain modulating agent

Seglitide acetate (MK 678; L 36358 acetate) is a potent, orally active somatostatin receptor 2 (SSTR₂) agonist, and also a competitive antagonist of SSTR₁₄, SSTR₂₅, and SSTR₂₈. Seglitide acetate has antihypertensive effects and can inhibit plasma glucagon and growth hormone. Seglitide acetate can be used for research on diabetes.

Somatostatin-28 (1-14) is an N-terminal fragment of the neuropeptide somatostatin-28.

Pasireotide (SOM230) L-aspartate salt, a long-acting cyclohexapeptide somatostatin analogue, can improve agonist activity at somatostatin receptors (subtypes sst1/2/3/4/5, pK_i=8.2/9.0/9.1/<7.0/9.9, respectively). Pasireotide L-aspartate salt exhibits antisecretory, antiproliferative, and proapoptotic activity.

Alkyne-βAG-TOCA, an octreotide derivative, targets somatostatin receptor type 2 (SST2). Alkyne-βAG-TOCA can be used for the synthesis/research of Radionuclide-Drug Conjugates (RDCs).

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.