Cell-type specific effects of endocytosis inhibitors on 5-hydroxytryptamine(2A) receptor desensitization and resensitization reveal an arrestin-, GRK2-, and GRK5-independent mode of regulation in human embryonic kidney 293 cells.

abstract：:Previous studies have shown that at least two subtypes of somatostatin (SRIF) receptors (SRIF1 and SRIF2) are expressed in mammalian cells. SRIF1 receptors have high affinity for MK 678, whereas SRIF2 receptors have no affinity for MK 678 but selectively bind peptides with structures similar to that of CGP 23996. Rece...

journal_title：Molecular pharmacology

authors： Rens-Domiano S,Law SF,Yamada Y,Seino S,Bell GI,Reisine T

更新日期：1992-07-01 00:00:00

abstract：:Aldehyde hydrogenases (ALDHs) belong to a large gene family involved in oxidation of both endogenous and exogenous compounds in mammalian tissues. Among ALDHs, the rat ALDH1A7 gene displays a curious strain dependence in phenobarbital (PB)-induced hepatic expression: the responsive RR ...

journal_title：Molecular pharmacology

authors： Touloupi K,Küblbeck J,Magklara A,Molnár F,Reinisalo M,Konstandi M,Honkakoski P,Pappas P

更新日期：2019-11-01 00:00:00

abstract：:Ovarian cancer is the leading cause of death from gynecological malignancy and has the worst prognosis of all gynecological cancers. Vascular endothelial growth factor (VEGF) plays an important role in ovarian cancer development. 9-beta-D-Arabinofuranosyl-2-fluoroadenine (Fara-A), a nucleotide analog, is frequently us...

journal_title：Molecular pharmacology

authors： Fang J,Cao Z,Chen YC,Reed E,Jiang BH

更新日期：2004-07-01 00:00:00

abstract：:To learn more about the binding conformation of phencyclidine (PCP) and to arrive at analogues of higher affinity, which may serve as noncompetitive N-methyl-D-aspartate receptor antagonists, eight optically pure PCP analogues were designed with the aid of computer. These compounds represent conformationally constrain...

journal_title：Molecular pharmacology

authors： Kozikowski AP,Pang YP

更新日期：1990-03-01 00:00:00

abstract：:In GH3 pituitary cell homogenates, acetylcholine (ACh) (IC50 200 nM) inhibits adenylate cyclase [ATP pyrophosphate-lyase (cyclizing), EC 4.6.1.1] activity in a concentration- and GTP-dependent manner. Maximal inhibition was obtained with 10 microM ACh and corresponded to approximately a 50% decrease in basal enzyme ac...

journal_title：Molecular pharmacology

authors： Onali P,Eva C,Olianas MC,Schwartz JP,Costa E

更新日期：1983-09-01 00:00:00

abstract：:The chemotherapeutic anthracycline metabolite doxorubicinol (doxOL) has been shown to interact with and disrupt the function of the cardiac ryanodine receptor Ca2+ release channel (RyR2) in the sarcoplasmic reticulum (SR) membrane and the SR Ca2+ binding protein calsequestrin 2 (CSQ2). Normal increases in RyR2 activit...

journal_title：Molecular pharmacology

authors： Hanna AD,Lam A,Thekkedam C,Willemse H,Dulhunty AF,Beard NA

更新日期：2017-11-01 00:00:00

abstract：:All-trans-retinoic acid (atRA) is the active metabolite of vitamin A. atRA is also used as a drug, and synthetic atRA analogs and inhibitors of retinoic acid (RA) metabolism have been developed. The hepatic clearance of atRA is mediated primarily by CYP26A1, but design of CYP26A1 inhibitors is hindered by lack of info...

journal_title：Molecular pharmacology

authors： Thatcher JE,Buttrick B,Shaffer SA,Shimshoni JA,Goodlett DR,Nelson WL,Isoherranen N

更新日期：2011-08-01 00:00:00

abstract：:We searched for sites on the alpha-subunit of the fast Na(+) channel responsible for the difference in GTX (grayanotoxin) sensitivity of the skeletal- and cardiac-muscle Na(+) current. cDNA clones, encoding the skeletal or cardiac isoforms of the alpha-subunit, were inserted into a mammalian expression vector and tran...

journal_title：Molecular pharmacology

authors： Kimura T,Yamaoka K,Kinoshita E,Maejima H,Yuki T,Yakehiro M,Seyama I

更新日期：2001-10-01 00:00:00

abstract：:Activation of muscarinic cholinergic receptors of 1321N1 human astrocytoma cells attenuates cyclic AMP accumulation. This effect results from an activation of phosphodiesterase with no direct inhibition of adenylate cyclase activity. In spite of this lack of coupling of muscarinic receptors to adenylate cyclase, guani...

journal_title：Molecular pharmacology

authors： Evans T,Martin MW,Hughes AR,Harden TK

更新日期：1985-01-01 00:00:00

abstract：:Iodonium inhibition of the flavoenzymes neutrophil NADPH oxidase and cytochrome P450 reductase has been suggested to require reductive metabolism of the inhibitor to a phenyl radical. Inhibition would ultimately result from covalent attachment of phenyl radicals to either the flavin cofactor or adjacent amino acid sid...

journal_title：Molecular pharmacology

authors： O'Donnell VB,Smith GC,Jones OT

更新日期：1994-10-01 00:00:00

abstract：:The chemical reaction of 1,4-benzoquinone with glutathione results in the formation of adducts that exhibit increasing degrees of glutathione substitution. Purification of these adducts and analysis by 1H and 13C nuclear magnetic resonance spectroscopy revealed the products of the reaction to be 2-(glutathion-S-yl)hyd...

journal_title：Molecular pharmacology

authors： Lau SS,Hill BA,Highet RJ,Monks TJ

更新日期：1988-12-01 00:00:00

abstract：:It has been suggested that elevated cytosolic free calcium plays a key role in acetaminophen-induced cell death. The present study has examined the effect of a toxic concentration of acetaminophen on cytosolic free calcium in single mouse hepatocytes, using the dye fura-2 and video imaging fluorescence microscopy. Cyt...

journal_title：Molecular pharmacology

authors： Harman AW,Mahar SO,Burcham PC,Madsen BW

更新日期：1992-04-01 00:00:00

abstract：:Folate receptor-targeted cancer therapies constitute a promising treatment for the approximately one third of human cancers that overexpress the folate receptor (FR). However, the potencies of all folate-receptor targeted therapies depend on 1) the rate of folate-linked drug conjugate binding to the cancer cell surfac...

journal_title：Molecular pharmacology

authors： Paulos CM,Reddy JA,Leamon CP,Turk MJ,Low PS

更新日期：2004-12-01 00:00:00

abstract：:In the last years, reactive oxygen species (ROS) have been proposed as mediators of proliferative/hypertrophic responses to angiotensin II (Ang II), both in vivo and in vitro. However, the hypothesis that the Ang II-dependent cell contraction could be mediated by ROS, particularly H2O2, has not been tested. Present ex...

journal_title：Molecular pharmacology

authors： Torrecillas G,Boyano-Adánez MC,Medina J,Parra T,Griera M,López-Ongil S,Arilla E,Rodríguez-Puyol M,Rodríguez-Puyol D

更新日期：2001-01-01 00:00:00

abstract：:Herpes simplex virus type 1 (HSV-1) encodes a thymidine kinase (TK) that markedly differs from mammalian nucleoside kinases in terms of substrate specificity. It recognizes both pyrimidine 2'-deoxynucleosides and a variety of purine nucleoside analogs. Based on a computer modeling study and in an attempt to modify thi...

journal_title：Molecular pharmacology

authors： Degrève B,Esnouf R,De Clercq E,Balzarini J

更新日期：2000-12-01 00:00:00

abstract：:The members of the Cys-loop ligand-gated ion channel (LGIC) gene family play a major role in fast synaptic transmission, and these receptors represent an important class of targets for therapeutic agents. Each member of this gene family is a pentameric complex containing one or more different subunits, and a large num...

journal_title：Molecular pharmacology

authors： White MM

更新日期：2006-02-01 00:00:00

abstract：:The structure-activity relationships for vasoactive intestinal peptide (VIP) receptor binding were studied using N-terminally modified VIP analogs. VIP fragments, and VIP receptor antagonists. Tissue sources included bovine coronary artery, rat mesenteric artery, rat pituitary, rat brain synaptosomes, and rat liver. E...

journal_title：Molecular pharmacology

authors： Rorstad OP,Wanke I,Coy DH,Fournier A,Huang M

更新日期：1990-06-01 00:00:00

abstract：:This study describes experiments investigating the mechanism of activation of A1 adenosine receptors. Isolated rat fat cells were used as a cellular model. The A1 receptors of these cells were covalently labeled with the agonist photoaffinity label R-2-azido-N6-p-hydroxyphenylisopropyladenosine. The covalent incorpora...

journal_title：Molecular pharmacology

authors： Lohse MJ,Klotz KN,Schwabe U

更新日期：1986-10-01 00:00:00

abstract：:An investigation of the conformational profiles of two cyclic delta-selective opioid peptides, [D-Pen2,D-Pen5]-enkephalin and [D-Pen2,L-Pen5]-enkephalin, has been made. The methods and procedures used are more extensive and systematic than those previously reported, involving a combination of nested grid rotations, cy...

journal_title：Molecular pharmacology

authors： Chew C,Villar HO,Loew GH

更新日期：1991-04-01 00:00:00

abstract：:Beta-adrenergic receptors were characterized in a particulate fraction of human auricles obtained from patients operated upon for coronary insufficiency or valvular disease. [125I] Hydroxybenzylpindolol binding was evaluated in terms of kinetics; KD and Bmax values; and inhibition of binding in the presence of 10 micr...

journal_title：Molecular pharmacology

authors： Robberecht P,Delhaye M,Taton G,De Neef P,Waelbroeck M,De Smet JM,Leclerc JL,Chatelain P,Christophe J

更新日期：1983-09-01 00:00:00

abstract：:At sites of inflammation, endothelial cells play a major role in defining the types of leukocytes that are recruited to a specific area. This is accomplished, at least in part, through the cytokine induction of cell surface adhesion molecules, including vascular cell adhesion molecule 1 (VCAM-1). We investigated the r...

journal_title：Molecular pharmacology

authors： Cobb RR,Felts KA,Parry GC,Mackman N

更新日期：1996-06-01 00:00:00

abstract：:We have synthesized and characterized a high-affinity alpha 1-adrenergic receptor probe, 4-amino-6,7-dimethoxy-2[4'- [5"(3"'-125I-iodo-4"'-aminophenyl)pentanoyl]-1'-piperazinyl] quinazoline (125I-A55453). This ligand binds reversibly to rat hepatic plasma membranes with high affinity (KD = 77 +/- 6 pM), and it labels ...

journal_title：Molecular pharmacology

authors： Dickinson KE,Leeb-Lundberg LM,Heald SL,Wikberg JE,DeBernardis JF,Caron MG,Lefkowitz RJ

更新日期：1984-09-01 00:00:00

abstract：:Previous biochemical studies have demonstrated that synergy between non-nucleoside reverse transcriptase (RT) inhibitors (NNRTI) and nucleoside RT inhibitors (NRTIs) is due to inhibition by the NNRTI of the rate at which HIV-1 RT facilitates ATP-mediated excision of NRTIs from chain-terminated template/primers (T/P). ...

journal_title：Molecular pharmacology

authors： Radzio J,Sluis-Cremer N

更新日期：2008-02-01 00:00:00

abstract：:Many human cancers show constitutive or amplified expression of the transcriptional regulator and oncoprotein Myc, making Myc a potential target for therapeutic intervention. Here we report the down-regulation of Myc activity by reducing the availability of Max, the essential dimerization partner of Myc. Max is expres...

journal_title：Molecular pharmacology

authors： Jiang H,Bower KE,Beuscher AE 4th,Zhou B,Bobkov AA,Olson AJ,Vogt PK

更新日期：2009-09-01 00:00:00

abstract：:Receptors have well-conserved regions that are recognized and activated by hormones and neurotransmitters. Most drugs bind to these sites and mimic or block the action of the native ligands. Using a high-throughput functional screen, we identified a potent and selective M(1) muscarinic receptor agonist from a novel st...

journal_title：Molecular pharmacology

authors： Spalding TA,Trotter C,Skjaerbaek N,Messier TL,Currier EA,Burstein ES,Li D,Hacksell U,Brann MR

更新日期：2002-06-01 00:00:00

abstract：:Epoxyeicosatrienoic acids (EETs), products of the cytochrome P-450 monooxygenase metabolism of arachidonic acid, can regulate the activity of ion channels. We examined the effects of EETs on cardiac L-type Ca2+ channels that play important roles in regulating cardiac contractility, controlling heart rate, and mediatin...

journal_title：Molecular pharmacology

authors： Chen J,Capdevila JH,Zeldin DC,Rosenberg RL

更新日期：1999-02-01 00:00:00

abstract：:High-throughput screening has led to the identification of small-molecule blockers of the cystic fibrosis transmembrane conductance regulator (CFTR) chloride channel, but the structural basis of blocker binding remains to be defined. We developed molecular models of the CFTR channel on the basis of homology to the bac...

journal_title：Molecular pharmacology

authors： Norimatsu Y,Ivetac A,Alexander C,O'Donnell N,Frye L,Sansom MS,Dawson DC

更新日期：2012-12-01 00:00:00

abstract：:The effect of ethanol on intracellular ionized calcium concentrations (Cai) was studied in synaptosomes isolated from mouse whole brain and in hepatocytes isolated from rat liver. The fluorescent calcium chelator, fura-2, was used to quantitate Cai. Incubation of synaptosomes with ethanol (350-700 mM) increased restin...

journal_title：Molecular pharmacology

authors： Daniell LC,Brass EP,Harris RA

更新日期：1987-12-01 00:00:00

abstract：:Previous studies have shown that exposure of phenobarbital-pretreated rats to halothane in 10% O2 causes centrilobular necrosis, induces expression of the 72-kDa heat shock protein (HSP72), and produces several trifluoroacetylated adducts. In the present study the time course of development of the centrilobular lesion...

journal_title：Molecular pharmacology

authors： Lin WQ,van Dyke RA,Marsh HM,Trudell JR

更新日期：1994-10-01 00:00:00

abstract：:Bovine adrenal zona fasciculata (AZF) cells express a noninactivating K+ current (IAC) that sets the resting membrane potential and may mediate depolarization-dependent cortisol secretion. External ATP stimulates cortisol secretion through activation of a nucleotide receptor. In whole-cell patch clamp recordings from ...

journal_title：Molecular pharmacology

authors： Xu L,Enyeart JJ

更新日期：1999-02-01 00:00:00