HOCPCA is an effective and selective ligand for the GHB binding sites that acts by binding with 27 times better affinity than GHB itself and crossing the blood-brain barrier in vitro and in vivo.
Graphislactone A is an antioxidant produced by Cephalosporium IFB-E001 and M. olivacea. It exhibits dose-dependent scavenging activity against DPPH radicals and metal ion-dependent hydroxyl radicals in vitro. Graphislactone A reduces peroxidation of human LDL and slows peroxidation of linoleic acid by 4.4-fold. It also inhibits acetylcholinesterase (AChE) with an IC50 value of 27 μM.
Neuromedin U-23 (NMU-23) is a neuropeptide involved in diverse biological processes, including smooth muscle contraction, energy homeostasis, and nociception.1It is an agonist of neuromedin-U receptor 1 (NMUR1; EC50= 0.17 nM for the human receptor in a calcium mobilization assay using HEK293 cells) and NMUR2 (EC50= ~1.4-2 nM for arachidonic acid release in CHO cells expressing the human receptor).2,3NMU-23 (1 μM) induces contractions in isolated rat colon smooth muscle strips.4It decreases body weight and food intake and increases core body temperature in mice when administered at a dose of 36 μg/animal.5Intrathecal administration of NMU-23 decreases the mechanical pain threshold in the von Frey test in rats.6
1.Mitchell, J.D., Maguire, J.J., and Davenport, A.P.Emerging pharmacology and physiology of neuromedin U and the structurally related peptide neuromedin SBr. J. Pharmacol.158(1)87-103(2009) 2.Szekeres, P.G., Muir, A.I., Spinage, L.D., et al.Neuromedin U is a potent agonist at the orphan G protein-coupled receptor FM3J. Biol. Chem.275(27)20247-20250(2000) 3.Hosoya, M., Moriya, T., Kawamata, Y., et al.Identification and functional characterization of a novel subtype of neuromedin U receptorJ. Biol. Chem.275(38)29528-29532(2000) 4.Brighton, P.J., Wise, A., Dass, N.B., et al.Paradoxical behavior of neuromedin U in isolated smooth muscle cells and intact tissueJ. Pharmacol. Exp. Ther.325(1)154-164(2008) 5.Peier, A., Kosinski, J., Cox-York, K., et al.The antiobesity effects of centrally administered neuromedin U and neuromedin S are mediated predominantly by the neuromedin U receptor 2 (NMUR2)Endocrinology150(7)3101-3109(2009) 6.Yu, X.H., Cao, C.Q., Mennicken, F., et al.Pro-nociceptive effects of neuromedin U in ratNeuroscience120(2)467-474(2003)
4-oxo-27-TBDMS Withaferin A is a derivative of the steroidal lactone withaferin A that has anticancer activity.1 It is cytotoxic to A2780 ovarian cancer cells (IC50 = 17 μM) but not to carboplatin-resistant A2780 (A2780/CP70) cells (IC50 = >100 μM). It is selective for A2780 cells over non-cancerous ARPE19 cells (IC50 = 1,660 μM). 4-oxo-27-TBDMS Withaferin A induces DNA fragmentation in A2780 cells.References1. Perestelo, N.R., Llanos, G.G., Reyes, C.P., et al. Expanding the chemical space of withaferin A by incorporating silicon to improve its clinical potential on human ovarian carcinoma cells. J. Med. Chem. 62(9), 4571-4585 (2019).
4-oxo-27-TBDMS Withaferin A is a derivative of the steroidal lactone withaferin A that has anticancer activity.1 It is cytotoxic to A2780 ovarian cancer cells (IC50 = 17 μM) but not to carboplatin-resistant A2780 (A2780/CP70) cells (IC50 = >100 μM). It is selective for A2780 cells over non-cancerous ARPE19 cells (IC50 = 1,660 μM). 4-oxo-27-TBDMS Withaferin A induces DNA fragmentation in A2780 cells.
References1. Perestelo, N.R., Llanos, G.G., Reyes, C.P., et al. Expanding the chemical space of withaferin A by incorporating silicon to improve its clinical potential on human ovarian carcinoma cells. J. Med. Chem. 62(9), 4571-4585 (2019).