islets

AACOCF3 (Arachidonyl trifluoromethyl ketone) is a cell-permeable trifluoromethyl ketone analog of arachidonic acid and a potent, selective slow binding inhibitor of the 85-kDa cytosolic phospholipase A2 (cPLA2). By blocking the production of arachidonate and 12-hydroxyeicosatetraenoic acid in calcium ionophore-challenged platelets, AACOCF3 hinders their synthesis. Additionally, AACOCF3 inhibits glucose-induced insulin secretion from isolated rat islets, making it promising for cardiovascular disease research.

Dimethyl DL-glutamate is a cell-permeant glutamic acid derivative that enhances insulin release in response to glucose in isolated islets and in animal models of diabetes.

AM-4668, a GPR40 (FFA1) agonist with oral availability, was optimized to reduce central nervous system (CNS) permeability, with a mouse brain plasma ratio of only 0.02, and significantly reduced blood glucose levels in human GPR40 knock-in mice.

Galantide acetate, a non-specific galanin receptor antagonist, is a peptide consisting of fragments of galanin and substance P. Galantide acetate recognizes two classes of galanin binding sites (KD<0.1 nM and ~6 nM) in the rat hypothalamus. Galantide acetate dose dependently (IC50=1.0 nM) antagonizes the galanin-mediated inhibition of the glucose-induced insulin secretion from mouse pancreatic islets. Galantide acetate appears to bind to a single population of SP receptors (KD~40 nM).

BRD7389 is an inhibitor of RSK family kinase with IC50s of 1.5 μM, 2.4 μM, and 1.2 μM for RSK1, RSK2, and RSK3, respectively.

GLP-1 secretion by human enteroendocrine NCI-H716 cells is augmented in a dose-dependent manner by the addition of CPE.

GKA50 stimulates insulin release from mouse islets of Langerhans and MIN6 cells. GKA50 shows significant glucose lowering in high fat fed female rats. GKA50 is a potent glucokinase activator (EC50=33 nM at 5 mM glucose).

Insulin B (20-30) is a peptide hormone produced by beta cells of the pancreatic islets, and it is considered to be the main anabolic hormone of the body. It is therefore an anabolic hormone, promoting the conversion of small molecules in the blood into la

Insulin B (22-30) is a peptide hormone produced by beta cells of the pancreatic islets, and it is considered to be the main anabolic hormone of the body. It is therefore an anabolic hormone, promoting the conversion of small molecules in the blood into la

BMS-986118 is a full agonist of GPR40, is a G-protein-coupled receptor expressed primarily in pancreatic islets and intestinal L-cells that has been a target of significant recent therapeutic interest for type II diabetes. Activation of GPR40 by partial a

WB403 is a TGR5 activator. WB403 significantly decreases fasting blood glucose, postprandial blood glucose and HbA1c, improves glucose tolerance in type 2 diabetic mice. WB403 increases pancreatic β-cells and restores the normal distribution pattern of α-

Neuromedin U (NMU) is a neuropeptide first demonstrated to drive smooth muscle contraction.1Translated as a 174 amino acid propeptide, NMU is cleaved to different lengths in different animals. It has diverse receptor-mediated rolesin vivo, as it regulates feeding, vasoconstriction, nociception, and bone remodeling and contributes to obesity, cancer and septic shock.2,2NMU-25 is the active form of NMU in humans. It binds with high affinity to receptors on human left ventricle and coronary artery (KDs = 0.26 and 0.11 nM, respectively), eliciting endothelium-independent vasoconstriction.3NMU-25 also suppresses glucose-stimulated insulin secretion in human islets, and this effect is lost in NMU R165W mutants, resulting in early-onset obesity.4 1.Mitchell, J.D., Maguire, J.J., and Davenport, A.P.Emerging pharmacology and physiology of neuromedin U and the structurally related peptide neuromedin SBritish Journal of Pharmacology15887-103(2009) 2.Greenwood, H.C., Bloom, S.R., and Murphy, K.G.Peptides and their potential role in the treatment of diabetes and obesityRev.Diabet.Stud.8(3)355-368(2011) 3.Mitchell, J.D., Maguire, J.J., Kuc, R.E., et al.Expression and vasoconstrictor function of anorexigenic peptides neuromedin U-25 and S in the human cardiovascular systemCardiovascular Research81353-361(2009) 4.Alfa, R.W., Park, S., Skelly, K.R., et al.Suppression of insulin production and secretion by a decretin hormoneCell Metabolism21(2)323-333(2015)

FKGK 18 is an inhibitor of group VIA (GVIA) calcium-independent phospholipase A2 (iPLA2). It inhibits GVIA iPLA2 by 99.9% at 0.091 mole fraction in a mixed micelle activity assay and is selective for GVIA iPLA2 over GIVA cPLA2 and GV sPLA2 where it shows 80.8 and 36.8% inhibition, respectively. FKGK 18 inhibits iPLA2β activity in cytosolic extracts from INS-1 cells overexpressing iPLA2β (IC50 = ~50 nM) as well as iPLA2γ activity in mouse heart membrane fractions (IC50s = ~1-3 μM). It inhibits glucose-induced increases in prostaglandin E2 production and insulin secretion in human pancreatic islets when used at a concentration of 10 μM and inhibits thapsigargin-induced apoptosis in INS-1 cells overexpressing iPLA2β in a concentration-dependent manner. FKGK 18 (20 mg/kg, 3 times per week) reduces blood glucose levels in an intraperitoneal glucose tolerance test, decreases the incidence of diabetes, and increases serum insulin levels in non-obese diabetic (NOD) mice.

Kisspeptin-54 is a peptide ligand of the orphan G protein-coupled receptor GPR54 (Kis = 1.81 and 1.45 nM for rat and human receptors, respectively).1 It is a 54 amino acid peptide encoded by the metastasis suppressor gene KISS-1. Kisspeptin-54 induces calcium mobilization in CHO-K1 cells expressing rat and human receptors (EC50s = 1.39 and 5.47 nM, respectively). It also induces arachidonic acid release in CHO cells expressing rat and human GPR54 in a concentration-dependent manner. Kisspeptin-54 (10-1,000 nM) inhibits insulin secretion from isolated mouse pancreatic β-cells in the presence of 2.8 mM, but not 11.1 mM, glucose.2 Kisspeptin-54 (1-5 nmol, i.c.v.) increases serum levels of luteinizing hormone (LH) and follicular stimulating hormone (FSH) in mice, an effect which is reversed by the gonadotropin releasing hormone (GNRH) antagonist acycline.3References1. Kotani, M., Detheux, M., Vandenbogaerde, A.L., et al. The metastasis suppressor gene KiSS-1 encodes kisspeptins, the natural ligands of the orphan G protein-coupled receptor GPR54. J. Biol. Chem. 276(37), 34631-34636 (2001).2. Vikman, J., and Ahrén, B. Inhibitory effect of kisspeptins on insulin secretion from isolated mouse islets. Diabetes Obes. Metab. 11(Suppl 4), 197-201 (2009).3. Gottsch, M.L., Cunningham, M.J., Smith, J.T., et al. A role for kisspeptins in the regulation of gonadotropin secretion in the mouse. Endocrinology 145(9), 4073-4077 (2004). Kisspeptin-54 is a peptide ligand of the orphan G protein-coupled receptor GPR54 (Kis = 1.81 and 1.45 nM for rat and human receptors, respectively).1 It is a 54 amino acid peptide encoded by the metastasis suppressor gene KISS-1. Kisspeptin-54 induces calcium mobilization in CHO-K1 cells expressing rat and human receptors (EC50s = 1.39 and 5.47 nM, respectively). It also induces arachidonic acid release in CHO cells expressing rat and human GPR54 in a concentration-dependent manner. Kisspeptin-54 (10-1,000 nM) inhibits insulin secretion from isolated mouse pancreatic β-cells in the presence of 2.8 mM, but not 11.1 mM, glucose.2 Kisspeptin-54 (1-5 nmol, i.c.v.) increases serum levels of luteinizing hormone (LH) and follicular stimulating hormone (FSH) in mice, an effect which is reversed by the gonadotropin releasing hormone (GNRH) antagonist acycline.3 References1. Kotani, M., Detheux, M., Vandenbogaerde, A.L., et al. The metastasis suppressor gene KiSS-1 encodes kisspeptins, the natural ligands of the orphan G protein-coupled receptor GPR54. J. Biol. Chem. 276(37), 34631-34636 (2001).2. Vikman, J., and Ahrén, B. Inhibitory effect of kisspeptins on insulin secretion from isolated mouse islets. Diabetes Obes. Metab. 11(Suppl 4), 197-201 (2009).3. Gottsch, M.L., Cunningham, M.J., Smith, J.T., et al. A role for kisspeptins in the regulation of gonadotropin secretion in the mouse. Endocrinology 145(9), 4073-4077 (2004).

AP39 free base is a mitochondrial-targeted H(2)S donor that can improve the survival rate of porcine islets in culture. AP39 free base regulates mitophagy through the AMPK-ULK1-FUNDC1 pathway, inhibits cell pyroptosis, and improves doxorubicin-induced myocardial fibrosis.

5(6)-EET is a fully racemic version of the enantiomeric forms biosynthesized from arachidonic acid by cytochrome P450 enzymes. In solution, 5(6)-EET degrades into 5,6-DiHET and 5(6)-δ-lactone, which can be converted to 5(6)-DiHET and quantified by GC-MS. In neuroendocrine cells, such as the anterior pituitary and pancreatic islets, 5(6)-EET has been implicated in the mobilization of calcium and hormone secretion. 5(6)-EET is an inhibitor of T-type voltage-gated calcium channels (Cav3) that inhibits isoforms Cav3.1, Cav3.2 (IC50 = 0.54 μM), and Cav3.3 and decreases nifedipine-resistant phenylephrine-induced vasoconstriction in isolated mouse mesenteric arteries via Cav3.2 blockade when used at a concentration of 3 μM. In addition, it is a substrate of COX-1 and COX-2, as measured by oxygen consumption and product formation assays when used at a concentration of 50 μM. (±)5(6)-EET is provided as a mixture of the free acid and lactone.

GKA50 quarterhydrate is a potent glucokinase activator with an EC50 value of 33 nM. This glucose-like activator of β-cell metabolism in rodent and human pancreatic islets is a Ca2+-dependent regulator of insulin secretion. It stimulates insulin secretion in mouse islets and significantly reduces blood glucose in high-fat-fed female rats.

BRD7552 is an inducer of transcription factor PDX1, which increases insulin expression. BRD7552 increases PDX1 expression in mouse αTC cells but not βTC cells.

ATM-1001 is an inhibitor of the cancer-associated tropomyosin 3.1 (Tpm3.1), suppressing glucose-stimulated insulin secretion (GSIS) from the pancreatic islets.

PF-04671536 is a highly potent and selective inhibitor of phosphodiesterase 8B (PDE8B) phosphodiesterase 8A (PDE8A). In primary human pancreatic islets, PF-04671536 increases insulin secretion in a glucose-dependent manner.

MS4 is a novel glucocorticoid receptor (GR) agonist with anti-inflammatory activity and displaying reduced impact on islets.

Phospholipid-PEG-Biotin (MW 1000 and MW 3400) is a derivative of a phospholipid and PEG, featuring a biotin moiety and a phospholipid connected via a linear PEG linker. This compound, particularly with a molecular weight of 3400, is capable of interacting with avidinylated antibodies. It finds applications in modifying the surface of liposomes, cells, and pancreatic islets, making it useful in cell transplantation [1] [2] [3].

Phospholipid-PEG-Biotin (MW 2000), a biotin-labeled phospholipid PEG derivative, is designed for modifying the surfaces of liposomes, cells, and pancreatic islets intended for cell transplantation. This compound integrates the properties of three distinct components: phospholipids, which are lipids featuring a hydrophilic head and two hydrophobic tails ; PEG, a low-toxicity, water-soluble, hydrophilic polymer; and biotin, an enzyme co-factor utilized in protein labeling [1].

Phospholipid-PEG-Biotin (MW 3400) is a derivative of phospholipid PEG featuring biotin and a phospholipid connected via a linear PEG linker. This compound can bind avidinylated antibodies and is used to modify liposome and cell surfaces, as well as pancreatic islets in cell transplantation applications [1] [2] [3].