Preferential coassembly of alpha4 and delta subunits of the gamma-aminobutyric acidA receptor in rat thalamus.

Abstract:

:Pharmacological study of rat thalamic gamma-aminobutyric acidA (GABAA) receptors revealed the presence of two distinct populations, namely, diazepam-sensitive and diazepam-insensitive [3H]Ro15-4513 binding sites accounting for 94 +/- 2% (1339 +/- 253 fmol/mg protein) and 6 +/- 2% (90 +/- 44 fmol/mg protein) of total sites, respectively. Thalamic diazepam-insensitive sites exhibited a pharmacology that was distinct from diazepam-sensitive sites but comparable to that of the alpha4beta3gamma2 subtype of the GABAA receptor stably expressed in L(tk-) cells. Immunoprecipitation experiments with a specific anti-alpha4-antiserum immunoprecipitated 20 and 7% of total thalamic [3H]muscimol and [3H]Ro15-4513 sites, respectively. Combinatorial immunoprecipitation using antisera against the alpha4, gamma2, and delta subunit revealed that alpha4delta- and alpha4gamma2-containing receptors account for 13 +/- 2 and 8 +/- 3% of [3H]muscimol sites from thalamus, respectively. It also indicated that all delta subunits coexist with an alpha4 subunit in this brain region. In conclusion, our results show that in rat thalamus both alpha4betagamma2 and alpha4betadelta subtypes are expressed but alpha4betadelta is the major alpha4-containing GABAA receptor population.

journal_name

Mol Pharmacol

journal_title

Molecular pharmacology

authors

Sur C,Farrar SJ,Kerby J,Whiting PJ,Atack JR,McKernan RM

doi

10.1124/mol.56.1.110

keywords:

subject

Has Abstract

pub_date

1999-07-01 00:00:00

pages

110-5

issue

1

eissn

0026-895X

issn

1521-0111

journal_volume

56

pub_type

杂志文章
  • Constitutively active mutants of the histamine H1 receptor suggest a conserved hydrophobic asparagine-cage that constrains the activation of class A G protein-coupled receptors.

    abstract::The aim of this study was to create and characterize constitutively active mutant (CAM) histamine H(1) receptors (H(1)R) using random mutagenesis methods to further investigate the activation process of the rhodopsin-like family of G protein-coupled receptors (GPCRs). This approach identified position 6.40 in TM 6 as ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.107.038547

    authors: Bakker RA,Jongejan A,Sansuk K,Hacksell U,Timmerman H,Brann MR,Weiner DM,Pardo L,Leurs R

    更新日期:2008-01-01 00:00:00

  • A novel metabotropic glutamate receptor 5 positive allosteric modulator acts at a unique site and confers stimulus bias to mGlu5 signaling.

    abstract::Metabotropic glutamate receptor 5 (mGlu5) is a target for the treatment of central nervous system (CNS) disorders, such as schizophrenia and Alzheimer's disease. Furthermore, mGlu5 has been shown to play an important role in hippocampal synaptic plasticity, specifically in long-term depression (LTD) and long-term pote...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.112.082891

    authors: Noetzel MJ,Gregory KJ,Vinson PN,Manka JT,Stauffer SR,Lindsley CW,Niswender CM,Xiang Z,Conn PJ

    更新日期:2013-04-01 00:00:00

  • Cytokines down-regulate expression of major cytochrome P-450 enzymes in adult human hepatocytes in primary culture.

    abstract::Cytokines are thought to cause the depression of cytochrome P-450 (CYP)-associated drug metabolism in humans during inflammation and infection. We have examined the role of five cytokines, i.e., interleukin-1 beta, interleukin-4, interleukin-6, tumor necrosis factor-alpha, and interferon-gamma, on the expression of CY...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Abdel-Razzak Z,Loyer P,Fautrel A,Gautier JC,Corcos L,Turlin B,Beaune P,Guillouzo A

    更新日期:1993-10-01 00:00:00

  • Vascular targeting of ocular neovascularization with a vascular endothelial growth factor121/gelonin chimeric protein.

    abstract::Tumors provide an extremely abnormal microenvironment that stimulates neovascularization from surrounding vessels and causes altered gene expression within vascular cells. Up-regulation of vascular endothelial growth factor (VEGF) receptors has allowed selective destruction of tumor vessels by administration of a chim...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.105.015628

    authors: Akiyama H,Mohamedali KA,E Silva RL,Kachi S,Shen J,Hatara C,Umeda N,Hackett SF,Aslam S,Krause M,Lai H,Rosenblum MG,Campochiaro PA

    更新日期:2005-12-01 00:00:00

  • Mechanism for noncompetitive inhibition by novel GluN2C/D N-methyl-D-aspartate receptor subunit-selective modulators.

    abstract::The compound 4-(5-(4-bromophenyl)-3-(6-methyl-2-oxo-4-phenyl-1,2-dihydroquinolin-3-yl)-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid (DQP-1105) is a representative member of a new class of N-methyl-d-aspartate (NMDA) receptor antagonists. DQP-1105 inhibited GluN2C- and GluN2D-containing receptors with IC(50) values ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.111.073239

    authors: Acker TM,Yuan H,Hansen KB,Vance KM,Ogden KK,Jensen HS,Burger PB,Mullasseril P,Snyder JP,Liotta DC,Traynelis SF

    更新日期:2011-11-01 00:00:00

  • Cisplatin in Combination with MDM2 Inhibition Downregulates Rad51 Recombinase in a Bimodal Manner to Inhibit Homologous Recombination and Augment Tumor Cell Kill.

    abstract::Dysfunction of p53 and resistance to cancer drugs can arise through mutually exclusive overexpression of MDM2 or MDM4. Cisplatin-resistant cells, however, can demonstrate increased binding of both MDM2 and MDM4 to p53 but in absence of cellular overexpression. Whether MDM2 inhibitors alone can activate p53 in these re...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.119.117564

    authors: Xie X,He G,Siddik ZH

    更新日期:2020-04-01 00:00:00

  • Ethanol inhibits the function of 5-hydroxytryptamine type 1c and muscarinic M1 G protein-linked receptors in Xenopus oocytes expressing brain mRNA: role of protein kinase C.

    abstract::Effects of ethanol on the function of Ca(2+)-activated Cl- channels activated by G protein-coupled serotonin (5-hydroxytryptamine, (5-HT)1c) and muscarinic M1 cholinergic receptors were studied in Xenopus oocytes expressing mouse whole-brain mRNA. Ethanol (25-200 mM) inhibited currents evoked by both 5-HT and acetylch...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Sanna E,Dildy-Mayfield JE,Harris RA

    更新日期:1994-05-01 00:00:00

  • Activation of the mitogen activated protein kinase extracellular signal-regulated kinase 1 and 2 by the nitric oxide-cGMP-cGMP-dependent protein kinase axis regulates the expression of matrix metalloproteinase 13 in vascular endothelial cells.

    abstract::Matrix metalloproteinases (MMPs) are synthesized in response to diverse stimuli, including cytokines, growth factors, hormones, and oxidative stress. Here we show that the nitric oxide (NO) donor 2-(N,N-diethylamino)-diazenolate-2-oxide (DEA-NO) and NO from murine macrophages transcriptionally regulate MMP-13 expressi...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.62.4.927

    authors: Zaragoza C,Soria E,López E,Browning D,Balbín M,López-Otín C,Lamas S

    更新日期:2002-10-01 00:00:00

  • A dopamine D2 receptor mutant capable of G protein-mediated signaling but deficient in arrestin binding.

    abstract::Arrestins mediate G protein-coupled receptor desensitization, internalization, and signaling. Dopamine D(2) and D(3) receptors have similar structures but distinct characteristics of interaction with arrestins. The goals of this study were to compare arrestin-binding determinants in D(2) and D(3) receptors other than ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.108.050534

    authors: Lan H,Liu Y,Bell MI,Gurevich VV,Neve KA

    更新日期:2009-01-01 00:00:00

  • Identification and characterization of compounds that potentiate NT-3-mediated Trk receptor activity.

    abstract::Neurotrophins are a family of secreted proteins that play an important role in the development, differentiation, and survival of neurons. Studies also suggest that aberrant neurotrophin signaling may play a role in processes underlying disease states such as schizophrenia, Alzheimer's disease, and depression. Whereas ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.105.020255

    authors: Lewis MA,Hunihan L,Franco D,Robertson B,Palmer J,Laurent DR,Balasubramanian BN,Li Y,Westphal RS

    更新日期:2006-04-01 00:00:00

  • P-glycoprotein, multidrug-resistance associated protein 2, Cyp3a, and carboxylesterase affect the oral availability and metabolism of vinorelbine.

    abstract::We investigated the interactions of the anticancer drug vinorelbine with drug efflux transporters and cytochrome P450 3A drug-metabolizing enzymes. Vinorelbine was transported by human multidrug-resistance associated protein (MRP) 2, and Mrp2 knockout mice displayed increased vinorelbine plasma exposure after oral adm...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.111.077099

    authors: Lagas JS,Damen CW,van Waterschoot RA,Iusuf D,Beijnen JH,Schinkel AH

    更新日期:2012-10-01 00:00:00

  • Structural determinants of affinity for the phencyclidine binding site of the N-methyl-D-aspartate receptor complex: discovery of a rigid phencyclidine analogue of high binding affinity.

    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

    pub_type: 杂志文章

    doi:

    authors: Kozikowski AP,Pang YP

    更新日期:1990-03-01 00:00:00

  • Cellular uptake of the antitumor agent Dp44mT occurs via a carrier/receptor-mediated mechanism.

    abstract::The chelator di-2-pyridylketone 4,4-dimethyl-3-thiosemicarbazone (Dp44mT) shows potent and selective anticancer and antimetastatic activity. However, the mechanism by which it is initially transported into cells to induce cytotoxicity is unknown. Hence, the current investigation examined the cellular uptake of ¹⁴C-Dp4...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.113.088393

    authors: Merlot AM,Pantarat N,Menezes SV,Sahni S,Richardson DR,Kalinowski DS

    更新日期:2013-12-01 00:00:00

  • DNA damage effects of a polyamide-CBI conjugate in SV40 virions.

    abstract::Polyamides are a class of synthetic molecules that exhibit high-affinity, sequence-specific reversible binding in the DNA minor groove but are incapable of inducing DNA damage. In cell-free systems, polyamides have been shown to regulate gene expression by activation, repression, and antirepression. However, effective...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.104.006254

    authors: Philips BJ,Chang AY,Dervan PB,Beerman TA

    更新日期:2005-03-01 00:00:00

  • The histone deacetylase inhibitor MGCD0103 has both deacetylase and microtubule inhibitory activity.

    abstract::Histone deacetylase inhibitors (HDACis) are currently in trial or are in clinical use for the treatment of a number of tumor types. The clinical efficacy of HDACis can be partly attributed to the modulation of the cell cycle by the HDACis. Here, we have examined the effects of N-(2-aminophenyl)-4-((4-pyridin-3-ylpyrim...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.110.065169

    authors: Chia K,Beamish H,Jafferi K,Gabrielli B

    更新日期:2010-09-01 00:00:00

  • Sulfated polymannuroguluronate, a novel anti-AIDS drug candidate, inhibits T cell apoptosis by combating oxidative damage of mitochondria.

    abstract::Sulfated polymannuroguluronate (SPMG) has entered the phase II clinical trial as the first anti-AIDS drug candidate in China. Herein, we report that SPMG was effective at protecting T lymphocytes against apoptosis. Further studies indicated that SPMG significantly elevated mitochondrial membrane potential (MMP) of T c...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.105.015412

    authors: Miao B,Li J,Fu X,Gan L,Xin X,Geng M

    更新日期:2005-12-01 00:00:00

  • Common signaling pathways link activation of murine PAR-1, LPA, and S1P receptors to proliferation of astrocytes.

    abstract::Receptors for the serine protease thrombin and for lysophospholipids are coupled to G proteins and control a wide range of cellular functions, including mitogenesis. Activators of these receptors are present in blood, and can enter the brain during central nervous system (CNS) injury. Reactive astrogliosis, a prominen...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.64.5.1199

    authors: Sorensen SD,Nicole O,Peavy RD,Montoya LM,Lee CJ,Murphy TJ,Traynelis SF,Hepler JR

    更新日期:2003-11-01 00:00:00

  • Signaling cascades for δ-opioid receptor-mediated inhibition of GABA synaptic transmission and behavioral antinociception.

    abstract::Membrane trafficking of the δ-opioid receptor (DOR) from intracellular compartments to plasma membrane in central neurons, induced by various pathological conditions such as long-term opioid exposure, represents unique receptor plasticity involved in the mechanisms of long-term opioid effects in opioid addiction and o...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.111.076307

    authors: Zhang Z,Pan ZZ

    更新日期:2012-03-01 00:00:00

  • [3H]propylbenzilylcholine mustard-labeling of muscarinic cholinergic receptors that selectively couple to phospholipase C or adenylate cyclase in two cultured cell lines.

    abstract::Although both second messenger response systems are fully functional in both cell lines, activation of muscarinic cholinergic receptors only results in inhibition of adenylate cyclase in NG108-15 neuroblastoma X glioma cells and stimulation of phosphoinositide hydrolysis in 1321N1 human astrocytoma cells. Muscarinic r...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Liang M,Martin MW,Harden TK

    更新日期:1987-10-01 00:00:00

  • Interactions of histamine H1-receptor agonists and antagonists with the human histamine H4-receptor.

    abstract::The human histamine H(4)-receptor (hH(4)R) possesses high constitutive activity and, like the human H(1)-receptor (hH(1)R), is involved in the pathogenesis of type-I allergic reactions. The study aims were to explore the value of dual H(1)/H(4)R antagonists as antiallergy drugs and to address the question of whether H...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.109.058651

    authors: Deml KF,Beermann S,Neumann D,Strasser A,Seifert R

    更新日期:2009-11-01 00:00:00

  • Antagonist binding properties of five cloned muscarinic receptors expressed in CHO-K1 cells.

    abstract::A family of five cholinergic muscarinic receptor genes (m1, m2, m3, m4, and m5) has recently been identified and cloned. In order to investigate the pharmacological properties of the individual muscarinic receptors, we have transfected each of these genes into Chinese hamster ovary cells (CHO-K1) and have established ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Buckley NJ,Bonner TI,Buckley CM,Brann MR

    更新日期:1989-04-01 00:00:00

  • Genome-wide expression profiling revealed peripheral effects of cannabinoid receptor 1 inverse agonists in improving insulin sensitivity and metabolic parameters.

    abstract::Inhibition of cannabinoid receptor 1 (CB1) has shown efficacy in reducing body weight and improving metabolic parameters, with the effects correlating with target engagement in the brain. The peripheral effects of inhibiting the CB1 receptor has been appreciated through studies in diet-induced obese and liver-specific...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.110.064980

    authors: Zhao W,Fong O,Muise ES,Thompson JR,Weingarth D,Qian S,Fong TM

    更新日期:2010-09-01 00:00:00

  • Insights into the gating mechanism of the ryanodine-modified human cardiac Ca2+-release channel (ryanodine receptor 2).

    abstract::Ryanodine receptors (RyRs) are intracellular membrane channels playing key roles in many Ca(2+) signaling pathways and, as such, are emerging novel therapeutic and insecticidal targets. RyRs are so named because they bind the plant alkaloid ryanodine with high affinity and although it is established that ryanodine pro...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.114.093757

    authors: Mukherjee S,Thomas NL,Williams AJ

    更新日期:2014-09-01 00:00:00

  • Identification of the multidrug resistance-related P-glycoprotein as a cyclosporine binding protein.

    abstract::The immunosuppressive agent cyclosporine A has been shown to reverse multidrug resistance (MDR) in malignant cells. In the present study, a 3H-cyclosporine diazirine analogue was used to photolabel viable MDR Chinese hamster ovary cells. The 170-kDa membrane P-glycoprotein, which functions as a drug efflux pump, was s...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Foxwell BM,Mackie A,Ling V,Ryffel B

    更新日期:1989-10-01 00:00:00

  • Inhibition of adenosine uptake by ethanol is specific for one class of nucleoside transporters.

    abstract::Adenosine uptake via nucleoside transporters is inhibited when S49 and NG108-15 cell lines cells are exposed to ethanol. This inhibition leads to an accumulation of extracellular adenosine that binds to adenosine A2 receptors and increases cAMP production. Subsequently, there is a heterologous desensitization of recep...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Krauss SW,Ghirnikar RB,Diamond I,Gordon AS

    更新日期:1993-11-01 00:00:00

  • Aspartate aminotransferase generates proagonists of the aryl hydrocarbon receptor.

    abstract::The aryl hydrocarbon receptor (AHR) binds planar aromatic compounds and up-regulates the transcription of a battery of xenobiotic-metabolizing enzymes. To identify proteins involved in the biosynthesis of endogenous AHR ligands, we screened extracts of various mouse tissues for AHR signaling activity. We found heart e...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.64.3.550

    authors: Bittinger MA,Nguyen LP,Bradfield CA

    更新日期:2003-09-01 00:00:00

  • Arsenite inhibition of CYP1A1 induction by 2,3,7,8-tetrachlorodibenzo-p-dioxin is independent of cell cycle arrest.

    abstract::We show here that arsenite (As(3+)) elicits multiple effects on gene control, such as the interruption of cell cycle control by initiating G(2)/M arrest as well as inhibiting the aryl hydrocarbon (Ah) receptor-mediated 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)-inducible expression of CYP1A1. This raises the question ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.104.006130

    authors: Bonzo JA,Chen S,Galijatovic A,Tukey RH

    更新日期:2005-04-01 00:00:00

  • Increased biliary GSSG efflux from rat livers perfused with thiocarbamide substrates for the flavin-containing monooxygenase.

    abstract::Thiourea, phenylthiourea, and methimazole perfused into rat liver stimulated the biliary efflux of GSSG without affecting the excretion of GSH into either the bile or the caval perfusate. The thiocarbamide moiety appears essential, since perfusion with urea, phenylurea, or N-methylimidazole did not stimulate GSSG rele...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Krieter PA,Ziegler DM,Hill KE,Burk RF

    更新日期:1984-07-01 00:00:00

  • Molecular Mechanism of Taurocholate Transport by the Bile Salt Export Pump, an ABC Transporter Associated with Intrahepatic Cholestasis.

    abstract::The bile salt export pump (BSEP/ABCB11) transports bile salts from hepatocytes into bile canaliculi. Its malfunction is associated with severe liver disease. One reason for functional impairment of BSEP is systemic administration of drugs, which as a side effect inhibit the transporter. Therefore, drug candidates are ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.117.108688

    authors: Sohail MI,Schmid D,Wlcek K,Spork M,Szakács G,Trauner M,Stockner T,Chiba P

    更新日期:2017-10-01 00:00:00

  • Identification and molecular characterization of rat CXCR3: receptor expression and interferon-inducible protein-10 binding are increased in focal stroke.

    abstract::We describe here the cloning and characterization of a rat homolog of the chemokine receptor CXCR3. The predicted amino acid sequence of rat CXCR3 contains 367 amino acid residues, sharing 96 and 87% amino acid sequence identity to the murine and human CXCR3, respectively. Among a large panel of chemokines tested, onl...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Wang X,Li X,Schmidt DB,Foley JJ,Barone FC,Ames RS,Sarau HM

    更新日期:2000-06-01 00:00:00