T4118

SB 271046 hydrochloride (SB 271046A) is selective, orally active 5-HT6 antagonist (pKi values are 9.02-8.92, 6.35, 6.55, 6.27 at 5-HT6, 5-HT1A, 5-HT1D and D3, and 6.05, 5.95, 5.76, 5.73, 5.62, 5.55, 5.41, 5.39, 5.27 and < 4.99 at 5-HT1B, 5-HT1F, α1B, 5-HT2C, 5-HT2A, D2, 5-HT2B, 5-HT7, 5-HT4 and 5-HT1E respectively) and is > 200-fold selective over 55 other receptors, enzymes and ion channels. It increases extracellular aspartate and glutamate in the frontal cortex and exhibits anticonvulsant activity (EC50: 0.16 μM).

JQAD1 is a potent and selective histone acetyltransferase EP300 degrader (PROTAC®; DC50≤ 31.6 nM); comprises an EP300 inhibitor, A485, joined by a linker to a cereblon E3 ligase ligand. JQAD1 brings about degradation of EP300 in neuroblastoma cell lines in a proteasome-dependent manner. JQAD1 suppresses both H3K27ac and EP300 expression levels and induces apoptosis. JQAD1 suppresses tumors growth in NSG mice xenografted with Kelly cells. CRC and MYCN genes are downregulated in tumors treated with JQAD1. JQAD1 exhibits no significant effect on coactivator CBP at concentrations inducing EP300 degradation.

Helianorphin-19 is a high affinity, potent and selective κ-opioid receptor (KOR) agonist (Ki = 25 nM; EC50= 45 nM). Helianorphin-19 exhibits approximately 200-fold selectivity for KOR over μ and δ-opioid receptors.In vivoHelianorphin-19 shows potent peripheral analgesic efficacy in a mouse model of visceral pain without affecting motor coordination/sedation.

Clocinnamox mesylate is a systemically active, irreversibleμ-opioid receptor antagonist (apparent Kivalues are 0.7, 1.9 and 5.7 nM for mouseμ,δandκreceptors respectively).

AY 254 is a potent PAR2 biased agonist. Selectively activates ERK1/2 signaling (EC50= 2 nM for ERK1/2 phosphorylation versus 80 nM for Ca2+release). Reduces cytoKi ne-induced caspase 3/8 activation, promotes scratch-wound healing, and induces IL-8 secretion, in human colorectal cancer (HT29) cellsin vitro.