Mechanisms of agonist-induced down-regulation of the human kappa-opioid receptor: internalization is required for down-regulation.

abstract：:Mitsuya and Broder [Proc. Natl. Acad. Sci. USA 83:1911-1915 (1986)] demonstrated that every purine (adenosine, guanosine, and inosine) and pyrimidine (cytidine and thymidine) nucleoside containing the 2',3'-dideoxyribose configuration, when evaluated against human immunodeficiency virus (HIV) in vitro, significantly s...

journal_title：Molecular pharmacology

authors： Hao Z,Cooney DA,Hartman NR,Perno CF,Fridland A,DeVico AL,Sarngadharan MG,Broder S,Johns DG

更新日期：1988-10-01 00:00:00

abstract：:In Rat-1 fibroblasts, endothelin-1 and a protein kinase C-stimulating phorbol ester stimulated extracellular signal-regulated kinase (ERK), whereas phenylephrine, acting at stably transfected human alpha1A-adrenoceptors, inhibited basal and endothelin-1- and phorbol ester-stimulated ERK. On the other hand, phenylephri...

journal_title：Molecular pharmacology

authors： Alexandrov A,Keffel S,Goepel M,Michel MC

更新日期：1998-11-01 00:00:00

abstract：:By limiting unrestricted activation of intracellular effectors, compartmentalised signalling of cyclic nucleotides confers specificity to extracellular stimuli and is critical for the development and health of cells and organisms. Dissecting the molecular mechanisms that allow local control of cyclic nucleotide signal...

journal_title：Molecular pharmacology

authors： Schleicher K,Zaccolo M

更新日期：2020-02-28 00:00:00

abstract：:The effect of cyanomorpholinyldoxorubicin, morpholinyldoxorubicin, doxorubicin, and Actinomycin D were studied on purified mouse leukemia (L1210) DNA topoisomerases I and II. DNA unwinding and cross-linking were also studied. It was found that 1) morpholinyldoxorubicin, cyanomorpholinyldoxorubicin, and Actinomycin D (...

journal_title：Molecular pharmacology

authors： Wassermann K,Markovits J,Jaxel C,Capranico G,Kohn KW,Pommier Y

更新日期：1990-07-01 00:00:00

abstract：:A substantial body of research implicates L-cysteine sulfinic acid (L-CSA) as a neurotransmitter. However, all physiological actions of L-CSA that have been pharmacologically characterized are mediated by cross-activation of glutamate receptors, and no receptor has been identified that is primarily activated by L-CSA....

journal_title：Molecular pharmacology

authors： Boss V,Nutt KM,Conn PJ

更新日期：1994-06-01 00:00:00

abstract：:Comparative molecular field analysis (CoMFA) predicts that the large electrostatic field around the phosphate groups of ATP plays a crucial role in stabilizing the open state of the cardiac ryanodine receptor (RyR) channel. We therefore investigated the effects of adenosine-5'-(beta,gamma-methylenetriphosphate) (AMP-P...

journal_title：Molecular pharmacology

authors： Chan WM,Welch W,Sitsapesan R

更新日期：2003-01-01 00:00:00

abstract：:We showed previously that microtubule disassembly by vinblastine induces the proto-oncogene c-myc in epithelial mammary HBL100 cells. In this study, we demonstrate that vinblastine treatment in these cells, in contrast to what was observed with the colon adenocarcinoma cell line HT29-D4, activated the transcription fa...

journal_title：Molecular pharmacology

authors： Bourgarel-Rey V,Vallee S,Rimet O,Champion S,Braguer D,Desobry A,Briand C,Barra Y

更新日期：2001-05-01 00:00:00

abstract：:A number of different agonists activate G protein-coupled receptors to stimulate adenylyl cyclase (AC), increase cAMP formation, and promote relaxation in vascular smooth muscle. To more fully understand this stimulation of AC, we assessed the expression, regulation, and compartmentation of AC isoforms in rat aortic s...

journal_title：Molecular pharmacology

authors： Ostrom RS,Liu X,Head BP,Gregorian C,Seasholtz TM,Insel PA

更新日期：2002-11-01 00:00:00

abstract：:Camptothecin (CPT) is an effective chemotherapeutic agent for treatment of patients with cancer. The mechanisms underlying CPT-mediated responses in cancer cells are not fully understood. MicroRNA (miRNA) play important roles in tumorigenesis and drug sensitivity. However, the interaction between camptothecin and miRN...

journal_title：Molecular pharmacology

authors： Zeng CW,Zhang XJ,Lin KY,Ye H,Feng SY,Zhang H,Chen YQ

更新日期：2012-04-01 00:00:00

abstract：:TWIK-related K(+) 1 (TREK1) potassium channels are members of the two-pore domain potassium channel family and contribute to background potassium conductances in many cell types, where their activity can be regulated by a variety of physiologic and pharmacologic mediators. Fenamates such as FFA (flufenamic acid; 2-{[3...

journal_title：Molecular pharmacology

authors： Veale EL,Al-Moubarak E,Bajaria N,Omoto K,Cao L,Tucker SJ,Stevens EB,Mathie A

更新日期：2014-05-01 00:00:00

abstract：:The cis and trans isomers of the photoisomerizable compound, 3,3'-bis-[alpha-(trimethylammonium)methyl]azobenzene (Bis-Q), were purified by high-performance liquid chromatography using the ion-pair partitioning technique on a reverse-phase column. Solutions of cis-Bis-Q are stable at -20 degrees; at 25 degrees, therma...

journal_title：Molecular pharmacology

authors： Nerbonne JM,Sheridan RE,Chabala LD,Lester HA

更新日期：1983-03-01 00:00:00

abstract：:The present study was conducted to establish a pharmacological method of controlling growth of vascular smooth muscle cells (VSMC) by blocking calcium entry. In cultured rat VSMC, 1 nM platelet-derived growth factor (PDGF) induced a biphasic elevation of cytoplasmic free calcium concentration, ([Ca2+]c). The second su...

journal_title：Molecular pharmacology

authors： Nie L,Mogami H,Kanzaki M,Shibata H,Kojima I

更新日期：1996-10-01 00:00:00

abstract：:The pharmacological preservation of bone in the ovariectomized rat by estrogen, selective estrogen receptor modulators (SERMs), and bisphosphonates has been well described. However, comprehensive molecular analysis of the effects of these pharmacologically diverse antiresorptive agents on gene expression in bone has n...

journal_title：Molecular pharmacology

authors： Helvering LM,Liu R,Kulkarni NH,Wei T,Chen P,Huang S,Lawrence F,Halladay DL,Miles RR,Ambrose EM,Sato M,Ma YL,Frolik CA,Dow ER,Bryant HU,Onyia JE

更新日期：2005-11-01 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：:A site-directed alkylating agent was used to inactivate one or more types of opioid receptor in two bioassay preparations in the presence of type-selective ligands as protectors of other opioid receptor types. Since the pharmacological potency of an agonist is decreased when the receptor type through which it acts has...

journal_title：Molecular pharmacology

authors： Goldstein A,James IF

更新日期：1984-05-01 00:00:00

abstract：:Endothelin (ET) receptors are present in pituitary cells and stimulate hormone release through the phosphoinositide/Ca2+ signaling system. In pituitary cell suspensions, ET caused [Ca2+]i elevations of much higher amplitudes than those induced by other vasoactive hormones, including angiotensin II, vasopressin, and no...

journal_title：Molecular pharmacology

authors： Stojilković SS,Iida T,Merelli F,Catt KJ

更新日期：1991-06-01 00:00:00

abstract：:In cervical cancer, the p53 and retinoblastoma (pRb) tumor suppressor pathways are disrupted by the human papilloma virus (HPV) E6 and E7 oncoproteins, because E6 targets p53 and E7 targets pRb for rapid proteasome-mediated degradation. We have investigated whether E6 suppression with small interfering RNA (siRNA) res...

journal_title：Molecular pharmacology

authors： Tan S,Hougardy BM,Meersma GJ,Schaap B,de Vries EG,van der Zee AG,de Jong S

更新日期：2012-05-01 00:00:00

abstract：:Reuptake of glutamate in astrocytes, a critical mechanism involved in the maintenance of physiological excitatory amino acid neurotransmission, is inhibited by both arachidonic acid (AA) and reactive oxygen species (ROS), via incompletely defined molecular mechanisms. Because ROS are generated during AA metabolism and...

journal_title：Molecular pharmacology

authors： Volterra A,Trotti D,Racagni G

更新日期：1994-11-01 00:00:00

abstract：:To determine the structural basis for binding subtype selective agonists in the beta-adrenergic receptor (beta AR), we examined the interaction of the mutant beta 2AR and chimeric beta 1/beta 2AR with a selective beta 2AR agonist, TA-2005 (8-hydroxy-5-[(1R)-1-hydroxy-2-[N-[(1R)-2-(p-methoxyphenyl)-1-methyle thy l] am...

journal_title：Molecular pharmacology

authors： Kikkawa H,Isogaya M,Nagao T,Kurose H

更新日期：1998-01-01 00:00:00

abstract：:Glucocorticoid-induced tumor necrosis factor receptor-related (GITR) protein is a costimulatory molecule that plays a role in inflammation so that GITR-Fc fusion protein can exert an anti-inflammatory effect. To investigate the mechanism by which GITR-Fc exerts its effects, we first used GITR knock-out (GITR(-/-)) mic...

journal_title：Molecular pharmacology

authors： Nocentini G,Cuzzocrea S,Genovese T,Bianchini R,Mazzon E,Ronchetti S,Esposito E,Rosanna DP,Bramanti P,Riccardi C

更新日期：2008-06-01 00:00:00

abstract：:Current evidence suggests that DNA fragmentation plays an integral role in mediating cytotoxicity that results from thymidine nucleotide depletion ("thymineless death"). Recently, Ayusawa et al. [Mutat. Res. 200:221-230 (1988)] reported that dTMP starvation induces cellular processes that result in the release of 50-2...

journal_title：Molecular pharmacology

authors： Dusenbury CE,Davis MA,Lawrence TS,Maybaum J

更新日期：1991-03-01 00:00:00

abstract：:The alpha2-adrenergic receptors (alpha2-ARs) mediate signals to intracellular second messengers via guanine nucleotide binding proteins. Three human genes encoding alpha2-AR subtypes (alpha2A, alpha2B, alpha2C) have been cloned. Several chemical compounds display subtype differences in their binding and/or functional ...

journal_title：Molecular pharmacology

authors： Marjamaki A,Pihlavisto M,Cockcroft V,Heinonen P,Savola JM,Scheinin M

更新日期：1998-03-01 00:00:00

abstract：:Nicotine biotransformation affects the smoking habits of addicted individuals and therefore their health risk. Using an improved analytical method, we have discovered that the human UDP-glucuronosyltransferase (UGT) 2B10, a liver enzyme previously unknown to conjugate nicotine or exhibit considerable activity toward a...

journal_title：Molecular pharmacology

authors： Kaivosaari S,Toivonen P,Hesse LM,Koskinen M,Court MH,Finel M

更新日期：2007-09-01 00:00:00

abstract：:The cDNAs for the four murine aryl hydrocarbon (Ah) receptor alleles were cloned and sequenced, and the deduced amino acid sequences were compared. The Ahb-1 allele encodes a protein of 805 amino acids, the Ahd and Ahb-2 alleles encode proteins of 848 amino acids, and the Ahb-3 allele encodes a protein of 883 amino ac...

journal_title：Molecular pharmacology

authors： Poland A,Palen D,Glover E

更新日期：1994-11-01 00:00:00

abstract：:Understanding the structures of active and inactive agonist- and antagonist-bound receptor complexes is of great interest. In this work, we focus on position 30 of cholecystokinin (CCK) and its spatial approximation with the type A CCK receptor. For this, we developed two photoaffinity labeling probes, replacing the n...

journal_title：Molecular pharmacology

authors： Dong M,Hadac EM,Pinon DI,Miller LJ

更新日期：2005-06-01 00:00:00

abstract：:Thapsigargin is a specific inhibitor of the sarco/endoplasmic reticulum Ca(2+) ATPase of the endoplasmic reticulum. Here, we show that stimulation of human HaCaT keratinocytes with nanomolar concentrations of thapsigargin triggers expression of activating transcription factor (ATF) 3, a basic-region leucin zipper tran...

journal_title：Molecular pharmacology

authors： Spohn D,Rössler OG,Philipp SE,Raubuch M,Kitajima S,Griesemer D,Hoth M,Thiel G

更新日期：2010-11-01 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：:Consequent to agonist exposure, many G protein-coupled receptors undergo sequestration or internalization. Results with receptors linked to adenylate cyclase, such as the beta 2-adrenergic receptor, or receptors linked to phospholipase C (PLC) have provided conflicting results regarding the role of second messenger-de...

journal_title：Molecular pharmacology

authors： Benya RV,Akeson M,Mrozinski J,Jensen RT,Battey JF

更新日期：1994-09-01 00:00:00

abstract：:The X-ray structure of the bacterial sodium channel NavAb provides a new template for the study of sodium and calcium channels. Unlike potassium channels, NavAb contains P2 helices in the outer-pore region. Because the sequence similarity between eukaryotic and prokaryotic sodium channels in this region is poor, the s...

journal_title：Molecular pharmacology

authors： Tikhonov DB,Zhorov BS

更新日期：2012-07-01 00:00:00

abstract：:The nicotinic acetylcholine receptor can be expressed in Xenopus oocytes by injection of in vitro synthesized RNA for the alpha, beta, gamma, and delta mouse muscle subunits. However, detectable responses can also be obtained by injection of alpha, beta, and delta subunit RNA only. The receptors expressed in this case...

journal_title：Molecular pharmacology

authors： Charnet P,Labarca C,Lester HA

更新日期：1992-04-01 00:00:00