PMID- 24513870 OWN - NLM STAT- MEDLINE DCOM- 20140514 LR - 20141120 IS - 1521-0103 (Electronic) IS - 0022-3565 (Linking) VI - 349 IP - 1 DP - 2014 Apr TI - The in vitro pharmacology of GS-5759, a novel bifunctional phosphodiesterase 4 inhibitor and long acting beta2-adrenoceptor agonist. PG - 85-93 LID - 10.1124/jpet.113.210997 [doi] AB - Inhaled long-acting beta(2)-adrenoceptor agonists (LABA) that act as bronchodilators and the oral anti-inflammatory phosphodiesterase 4 (PDE4) inhibitor roflumilast are both approved therapies for chronic obstructive pulmonary disease (COPD). Here we describe the activity of a novel, inhaled, bifunctional, small molecule (R)-6-[(3-[4-(5-[2-hydroxy-2-(8-hydroxy-2-oxo-1,2-dihydroquinolin-5-yl)ethyl]aminopent-1-yn-1-yl)phenyl]carbamoylphenyl)sulfonyl]-4-[(3-methoxyphenyl)amino]-8-methylquinoline-3-carboxamide (GS-5759), which has specific beta(2) agonist and PDE4 inhibitory activity. GS-5759 demonstrated potent and full agonist activity at beta(2) adrenoceptors (EC(50) = 8 +/- 4 nM) and is a potent inhibitor of the PDE4 enzyme (IC(50) = 5 +/- 3 nM). In cell assays, GS-5759 inhibited lipopolysaccharide (LPS)-induced tumor necrosis factor alpha (TNFalpha) production in human peripheral mononuclear cells (PBMC) with an IC(50) = 0.3 nM [confidence interval (CI) 0.1-0.6] and in human neutrophils formyl-methionyl-leucyl-phenylalanine (fMLP)-induced super oxide anion production with an IC(50) = 3 nM (CI 0.8-8). The addition of the beta(2) antagonist ICI 118551 shifted the IC(50) in these cell assays to 4 and 38 nM, respectively, demonstrating the contribution of both beta(2) agonist and PDE4 inhibitory activity to GS-5759. GS-5759 was also a potent inhibitor of profibrotic and proinflammatory mediator release from human lung fibroblasts. GS-5759 relaxed guinea pig airway smooth muscle strips precontracted with carbachol in a concentration-dependent manner with an EC(50) = 0.5 microM (CI 0.2-2) and had slow dissociation kinetics with an Off T(1/2) > 720 minutes at an EC(80) concentration of 3 microM. GS-5759 is a novel bifunctional molecule with both potent beta(2) agonist and PDE4 inhibitor activity that could provide inhaled bronchodilator and anti-inflammatory therapy for COPD. FAU - Tannheimer, Stacey L AU - Tannheimer SL AD - Oncology/Inflammation Research (S.L.T., E.A.S., Z-H.C., C.D.W., M.S.), Medicinal Chemistry (M.K., L.P., W.R.B., G.B.P.), Gilead Sciences Inc., Seattle, Washington. FAU - Sorensen, Eric A AU - Sorensen EA FAU - Cui, Zhi-Hua AU - Cui ZH FAU - Kim, Musong AU - Kim M FAU - Patel, Leena AU - Patel L FAU - Baker, William R AU - Baker WR FAU - Phillips, Gary B AU - Phillips GB FAU - Wright, Clifford D AU - Wright CD FAU - Salmon, Michael AU - Salmon M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140210 PL - United States TA - J Pharmacol Exp Ther JT - The Journal of pharmacology and experimental therapeutics JID - 0376362 RN - 0 (6-((3-((4-(5-((2-hydroxy-2-(8-hydroxy-2-oxo-1,2-dihydroquinolin-5-yl)ethyl)amino)pent-1-yn-1-yl)phenyl)carbamoyl)phenyl)sulfonyl)-4-((3-methoxyphenyl)amino)-8-methylquinoline-3-carboxamide) RN - 0 (Adrenergic beta-2 Receptor Agonists) RN - 0 (Cytokines) RN - 0 (Lipopolysaccharides) RN - 0 (Phosphodiesterase 4 Inhibitors) RN - 0 (Quinolones) RN - 0 (Sulfones) SB - IM MH - Adrenergic beta-2 Receptor Agonists/chemical synthesis/chemistry/*pharmacology MH - Animals MH - Cell Culture Techniques MH - Cytokines/antagonists & inhibitors/immunology MH - Fibroblasts/*drug effects/enzymology/immunology/metabolism MH - Guinea Pigs MH - Humans MH - Leukocytes, Mononuclear/*drug effects/enzymology/immunology/metabolism MH - Lipopolysaccharides/pharmacology MH - Male MH - Molecular Structure MH - Muscle, Smooth/*drug effects/enzymology/immunology/metabolism MH - Phosphodiesterase 4 Inhibitors/chemical synthesis/chemistry/*pharmacology MH - Pulmonary Disease, Chronic Obstructive/drug therapy MH - Quinolones/chemical synthesis/chemistry/*pharmacology MH - Respiratory System/*drug effects/enzymology/immunology/metabolism MH - Sulfones/chemical synthesis/chemistry/*pharmacology MH - Time Factors EDAT- 2014/02/12 06:00 MHDA- 2014/05/16 06:00 CRDT- 2014/02/12 06:00 PHST- 2014/02/12 06:00 [entrez] PHST- 2014/02/12 06:00 [pubmed] PHST- 2014/05/16 06:00 [medline] AID - jpet.113.210997 [pii] AID - 10.1124/jpet.113.210997 [doi] PST - ppublish SO - J Pharmacol Exp Ther. 2014 Apr;349(1):85-93. doi: 10.1124/jpet.113.210997. Epub 2014 Feb 10.